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Document and Entity Information - USD ($) $ in Thousands	3 Months Ended
Document and Entity Information - USD ($) $ in Thousands	Mar. 31, 2012	Jun. 30, 2011
Document and Entity Information [Abstract]
Entity Registrant Name	VORNADO REALTY TRUST
Entity Central Index Key	0000899689
Document Type	10-Q
Document Period End Date	Mar. 31, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	185,642,051
Entity Public Float		$ 15,602,381
Entity Well Known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2012	Dec. 31, 2011
Real estate, at cost:
Land	$ 4,677,940	$ 4,666,929
Buildings and improvements	12,720,139	12,709,356
Development costs and construction in progress	118,811	122,075
Leasehold improvements and equipment	128,391	128,651
Total	17,645,281	17,627,011
Less accumulated depreciation and amortization	(3,173,515)	(3,095,037)
Real estate, net	14,471,766	14,531,974
Cash and cash equivalents	614,359	606,553
Restricted cash	117,423	98,068
Marketable securities	754,510	741,321
Accounts receivable, net of allowance for doubtful accounts of $42,785 and $43,241	191,184	171,798
Real Estate Fund investments	324,514	346,650
Mezzanine loans receivable	133,143	133,948
Receivable arising from the straight-lining of rents, net of allowance of $3,986 and $4,046	750,017	728,626
Deferred leasing and financing costs, net of accumulated amortization of $218,111 and $245,087	387,481	376,292
Identified intangible assets, net of accumulated amortization of $361,856 and $359,944	304,385	319,704
Assets related to discontinued operations	0	251,202
Due from officers	0	13,127
Other assets	337,983	386,765
Assets	20,269,729	20,446,487
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Notes and mortgages payable	8,434,938	8,558,275
Senior unsecured notes	1,357,748	1,357,661
Exchangeable senior debentures	499,680	497,898
Convertible senior debentures	10,233	10,168
Revolving credit facility debt	0	138,000
Accounts payable and accrued expenses	453,578	423,512
Deferred revenue	500,266	516,259
Deferred compensation plan	99,810	95,457
Deferred tax liabilities	13,380	13,315
Liabilities related to discontinued operations	0	14,153
Other liabilities	139,660	152,665
Total liabilities	11,509,293	11,777,363
Commitments and contingencies
Redeemable noncontrolling interests:
Class A units - 12,172,197 and 12,160,771 units outstanding	1,024,899	934,677
Series D cumulative redeemable preferred units - 9,000,001 units outstanding	226,000	226,000
Total redeemable noncontrolling interests	1,250,899	1,160,677
Vornado shareholders' equity:
Preferred shares of beneficial interest: no par value per share; authorized 110,000,000 shares; issued and outstanding 42,184,609 and 42,186,709 shares	1,021,555	1,021,660
Common shares of beneficial interest: $.04 par value per share; authorized 250,000,000 shares; issued and outstanding 185,642,051 and 185,080,020 shares	7,396	7,373
Additional capital	7,058,212	7,127,258
Earnings less than distributions	(1,312,670)	(1,401,704)
Accumulated other comprehensive income	67,174	73,729
Total Vornado shareholders' equity	6,841,667	6,828,316
Noncontrolling interest in consolidated subsidiaries	667,870	680,131
Total equity	7,509,537	7,508,447
Total liabilities, redeemable noncontrolling interests and equity	20,269,729	20,446,487
Toys R Us [Member]
Real estate, at cost:
Investments in partially owned entities	597,860	506,809
All Equity Method Investees Excluding Toys [Member]
Real estate, at cost:
Investments in partially owned entities	$ 1,285,104	$ 1,233,650

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Accounts receivable, allowance for doubtful accounts	$ 42,785	$ 43,241
Receivable arising from the straight-lining of rents, net of allowance of	3,986	4,046
Deferred leasing and financing costs, net of accumulated amortization of	218,111	245,087
Identified intangible assets: Accumulated amortization	$ 361,856	$ 359,944
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Preferred shares of beneficial interest: authorized shares	110,000,000	110,000,000
Preferred shares of beneficial interest: issued shares	42,184,609	42,186,709
Preferred shares of beneficial interest: outstanding shares	42,184,609	42,186,709
Common shares of beneficial interest: par value per share	$ 0.04	$ 0.04
Common shares of beneficial interest: authorized shares	250,000,000	250,000,000
Common shares of beneficial interest: issued shares	185,642,051	185,080,020
Common shares of beneficial interest: outstanding shares	185,642,051	185,080,020
Common Class A [Member]
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Redeemable noncontrolling interests units outstanding	12,172,197	12,160,771
Cumulative Redeemable Preferred Unit [Member]
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Redeemable noncontrolling interests units outstanding	9,000,001	9,000,001

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
REVENUES:
Property rentals	$ 557,413	$ 562,252
Tenant expense reimbursements	81,607	89,669
Cleveland Medical Mart development project	55,059	40,699
Fee and other income	33,387	34,263
Total revenues	727,466	726,883
EXPENSES:
Operating	276,826	286,362
Depreciation and amortization	139,437	129,833
General and administrative	55,890	58,946
Cleveland Medical Mart development project	52,761	38,278
Acquisition related costs and tenant buy-outs	685	18,270
Total expenses	525,599	531,689
Operating income	201,867	195,194
Income from partially owned entities	136,504	129,228
Income from Real Estate Fund (of which $7,933 and ($74), respectively, are attributable to noncontrolling interests)	11,762	1,080
Interest and other investment income, net	15,681	117,108
Interest and debt expense (including amortization of deferred financing costs of $5,867 and $4,633, respectively)	(135,169)	(134,710)
Net gain on disposition of wholly owned and partially owned assets	0	6,677
Income before income taxes	230,645	314,577
Income tax expense	(7,096)	(6,382)
Income from continuing operations	223,549	308,195
Income from discontinued operations	56,715	137,626
Net income	280,264	445,821
Less (income) loss attributable to noncontrolling interests	(9,597)	(1,350)
Less net income attributable to noncontrolling interests in: Operating Partnership, including unit distributions	(19,145)	(31,808)
Net income attributable to Vornado	251,522	412,663
Preferred share dividends	(17,787)	(13,448)
NET INCOME attributable to common shareholders	$ 233,735	$ 399,215
INCOME PER COMMON SHARE - BASIC:
Income from continuing operations, net	$ 0.97	$ 1.47
Income from discontinued operations, net	0.29	0.70
Net income per common share	$ 1.26	$ 2.17
Weighted average shares outstanding	185,370	183,988
INCOME PER COMMON SHARE - DILUTED:
Income from continuing operations, net	$ 0.97	$ 1.45
Income from discontinued operations, net	0.28	0.67
Net income per common share	$ 1.25	$ 2.12
Weighted average shares outstanding	191,886	191,529
DIVIDENDS PER COMMON SHARE	$ 0.69	$ 0.69
Toys R Us [Member]
EXPENSES:
Income from partially owned entities	$ 116,471	$ 112,944
All Equity Method Investees Excluding Toys [Member]
EXPENSES:
Income from partially owned entities	$ 20,033	$ 16,284

Consolidated Statements of Income (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Amortization of deferred financing costs	$ 5,867	$ 4,633
Income from Real Estate Fund, attributable to noncontrolling interest	9,597	1,350
Real Estate Fund [Member]
Income from Real Estate Fund, attributable to noncontrolling interest	$ 7,933	$ (74)

Condolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net income	$ 280,264	$ 445,821
Other comprehensive (loss) income:
Change in unrealized net gain on securities available-for-sale	12,693	68,039
Pro rata share of other comprehensive loss of nonconsolidated subsidiaries	(21,944)	(3,791)
Change in value of interest rate swap	2,386	(7,146)
Other	(123)	59
Comprehensive income	273,276	502,982
Less comprehensive income attributable to noncontrolling interests	(28,309)	(36,759)
Comprehensive income attributable to Vornado	$ 244,967	$ 466,223

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References

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+ Details

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to noncontrolling interests, if any. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References + Details

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References + Details

- Definition

Net of tax effect change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges after taxes. A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk. The change includes an entity's share of an equity investee's increase or decrease in deferred hedging gains or losses. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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+ Details

- Definition

This element represents Other Comprehensive Income or Loss, Net of Tax, for the period. Includes deferred gains or losses on qualifying hedges, unrealized holding gains or losses on available-for-sale securities, minimum pension liability, and cumulative translation adjustment. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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+ Details

- Definition

Appreciation or loss in value (before reclassification adjustment) of the total of unsold securities during the period being reported on, net of tax. Reclassification adjustments include: (1) the unrealized holding gain (loss), net of tax, at the date of the transfer for a debt security from the held-to-maturity category transferred into the available-for-sale category. Also includes the unrealized gain (loss) at the date of transfer for a debt security from the available-for-sale category transferred into the held-to-maturity category; (2) the unrealized gains (losses) realized upon the sale of securities, after tax; and (3) the unrealized gains (losses) realized upon the write-down of securities, after tax.

+ References

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+ Details

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

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+ Details

Consolidated Statements of Changes in Equity - USD ($) shares in Thousands, $ in Thousands	Total	Real Estate Fund [Member]	All Other Except Real Estate Fund [Member]	Preferred Shares	Common Shares	Additional Capital	Earnings Less Than Distributions	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interests	Non-controlling Interests Real Estate Fund [Member]	Non-controlling Interests All Other Except Real Estate Fund [Member]
Beginning balance, shares at Dec. 31, 2010				32,340	183,662
Beginning balance, value at Dec. 31, 2010	$ 6,830,405			$ 783,088	$ 7,317	$ 6,932,728	$ (1,480,876)	$ 73,453	$ 514,695
Net income	414,013						412,663		1,350
Dividends on common shares, value	(126,936)						(126,936)
Dividends on preferred shares, value	(13,559)						(13,559)
Common shares issued:
Upon redemption of Class A units, at redemption value, shares					320
Upon redemption of Class A units, at redemption value, value	27,539				$ 13	27,526
Under employees' share option plan, shares					240
Under employees' share option plan, value	14,639				$ 10	15,027	(398)
Under dividend reinvestment plan, shares					5
Under dividend reinvestment plan, value	434				$ 0	434
Limited partners' contributions:
Limited partners' contribution		$ 92,068	$ 170							$ 92,068	$ 170
Distributions:
Distributions to Limited Partners		(11,027)								(11,027)
Conversion Of Series A Preferred Shares To Common Shares, Shares				(1)	2
Conversion of Series A preferred shares to common shares, value	0			$ (50)	$ 0	50
Deferred compensation shares and options, shares					11
Deferred compensation shares and options, value	2,370				$ 0	2,370
Change in unrealized net gain on securities available-for-sale	68,039							68,039
Pro rata share of other comprehensive income of nonconsolidated subsidiaries	(3,791)							(3,791)
Change in value of interest rate swap	(7,146)							(7,146)
Adjustment to carry redeemable Class A units at redemption value	(42,227)					(42,227)
Other	(147)			$ (105)		(173)	113	59	(41)
Ending balance, shares at Mar. 31, 2011				32,339	184,240
Ending balance, value at Mar. 31, 2011	7,244,844			$ 782,933	$ 7,340	6,935,735	(1,208,993)	130,614	597,215
Beginning balance, shares at Dec. 31, 2011				42,187	185,080
Beginning balance, value at Dec. 31, 2011	7,508,447			$ 1,021,660	$ 7,373	7,127,258	(1,401,704)	73,729	680,131
Net income	261,119						251,522		9,597
Dividends on common shares, value	(127,973)						(127,973)
Dividends on preferred shares, value	(17,787)						(17,787)
Common shares issued:
Upon redemption of Class A units, at redemption value, shares					158
Upon redemption of Class A units, at redemption value, value	13,028				$ 6	13,022
Under employees' share option plan, shares					389
Under employees' share option plan, value	(8,811)				$ 16	7,562	(16,389)
Under dividend reinvestment plan, shares					5
Under dividend reinvestment plan, value	411				$ 0	411
Distributions:
Distributions to Limited Partners		$ (21,856)								$ (21,856)
Conversion Of Series A Preferred Shares To Common Shares, Shares				(2)	3
Conversion of Series A preferred shares to common shares, value	0			$ (105)		105
Deferred compensation shares and options, shares					7
Deferred compensation shares and options, value	5,577				$ 1	5,915	(339)
Change in unrealized net gain on securities available-for-sale	12,693							12,693
Pro rata share of other comprehensive income of nonconsolidated subsidiaries	(21,944)							(21,944)
Change in value of interest rate swap	2,386							2,386
Adjustment to carry redeemable Class A units at redemption value	(96,061)					(96,061)
Redeemable noncontrolling interests' share of above adjustments	433							433
Other	(125)			$ 0		0	0	(123)	(2)
Ending balance, shares at Mar. 31, 2012				42,185	185,642
Ending balance, value at Mar. 31, 2012	$ 7,509,537			$ 1,021,555	$ 7,396	$ 7,058,212	$ (1,312,670)	$ 67,174	$ 667,870

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash Flows from Operating Activities:
Net income	$ 280,264	$ 445,821
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization (including amortization of deferred financing costs)	145,304	136,860
Equity in net income of partially owned entities, including Toys R Us	(136,504)	(129,228)
Net gains on sale of real estate	(55,817)	(51,165)
Straight-lining of rental income	(21,808)	(13,942)
Distributions of income from partially owned entities	14,194	25,921
Amortization of below-market leases, net	(13,813)	(16,892)
Other non-cash adjustments	7,795	8,211
Unrealized gain on Real Estate Fund assets	(6,844)	0
Income from the mark-to-market of J.C. Penney derivative position	(1,045)	(17,163)
Net gain on extinguishment of debt	0	(83,907)
Mezzanine loans loss reversal and net gain on disposition	0	(82,744)
Net gain on disposition of wholly owned and partially owned assets	0	(6,677)
Changes in operating assets and liabilities:
Real Estate Fund investments	28,980	(85,536)
Accounts receivable, net	(19,386)	(10,475)
Prepaid assets	51,202	34,761
Other assets	(8,872)	2,947
Accounts payable and accrued expenses	40,609	30,906
Other liabilities	2,844	8,404
Net cash provided by operating activities	307,103	196,102
Cash Flows from Investing Activities:
Proceeds from sales of real estate and related investments	306,022	127,199
Investments in partially owned entities	(46,732)	(316,129)
Additions to real estate	(44,052)	(30,281)
Acquisitions of real estate and other	(21,054)	0
Development costs and construction in progress	(20,614)	(10,994)
Restricted cash	(19,355)	12,174
Proceeds from the repayment of loan to officer	13,123	0
Distributions of capital from partially owned entities	4,203	192,523
Proceeds from sales and repayments of mezzanine loans	554	73,608
Proceeds from sales of marketable securities	0	15,162
Investments in mezzanine loans receivable and other	0	(2,841)
Net cash provided by investing activities	172,095	60,421
Cash Flows from Financing Activities:
Repayments of borrowings	(884,679)	(1,197,312)
Proceeds from borrowings	625,000	937,518
Dividends paid on common shares	(127,973)	(126,936)
Distributions to noncontrolling interests	(34,092)	(23,639)
Repurchase of shares related to stock compensation agreements and related tax withholdings	(30,034)	(570)
Dividends paid on preferred shares	(17,789)	(13,559)
Debt issuance and other costs	(9,822)	(12,161)
Proceeds received from exercise of employee share options	7,997	15,470
Contributions from noncontrolling interests	0	92,238
Net cash used in financing activities	(471,392)	(328,951)
Net increase (decrease) in cash and cash equivalents	7,806	(72,428)
Cash and cash equivalents at beginning of period	606,553	690,789
Cash and cash equivalents at end of period	614,359	618,361
Supplemental Disclosure of Cash Flow Information:
Cash payments for interest, net of capitalized interest of $16 and $0	117,282	108,458
Cash payments for income taxes	2,563	2,509
Non-Cash Investing and Financing Activities:
Adjustment to carry redeemable Class A units at redemption value	(96,061)	(42,227)
Common shares issued upon redemption of Class A units, at redemption value	13,028	27,539
Change in unrealized net gain on securities available-for-sale	12,693	68,039
Contribution of mezzanine loan receivable to a joint venture	0	73,750
Like-kind exchange of real estate	0	(45,625)
Decrease in assets and liabilities resulting from deconsolidation of discontinued operations:
Assets related to discontinued operations	0	(145,333)
Liabilities related to discontinued operations	0	(232,502)
Write-off of fully depreciated assets	(37,890)	(25,893)
Toys R Us [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in net income of partially owned entities, including Toys R Us	(116,471)	(112,944)
All Equity Method Investees Excluding Toys [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in net income of partially owned entities, including Toys R Us	$ (20,033)	$ (16,284)

Consolidated Statements of Cash Flows (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Consolidated Statements Of Cash Flows Parentheticals [Abstract]
Cash paid for capitalized interest	$ 16	$ 0

Organization

3 Months Ended

Mar. 31, 2012

Organization [Abstract]

Organization [Text Block]

1. Organization

Vornado Realty Trust (“Vornado”) is a fully-integrated real estate investment trust (“REIT”) and conducts its business through, and substantially all of its interests in properties are held by, Vornado Realty L.P., a Delaware limited partnership (the “Operating Partnership”). Accordingly, Vornado's cash flow and ability to pay dividends to its shareholders is dependent upon the cash flow of the Operating Partnership and the ability of its direct and indirect subsidiaries to first satisfy their obligations to creditors. Vornado is the sole general partner of, and owned approximately 93.5% of the common limited partnership interest in the Operating Partnership at March 31, 2012. All references to “we,” “us,” “our,” the “Company” and “Vornado” refer to Vornado Realty Trust and its consolidated subsidiaries, including the Operating Partnership.

Basis of Presentation

3 Months Ended

Mar. 31, 2012

Basis Of Presentation [Abstract]

Basis of Presentation [Text Block]

2. Basis of Presentation

The accompanying consolidated financial statements are unaudited and include the accounts of Vornado, and the Operating Partnership and its consolidated partially owned entities. All intercompany amounts have been eliminated. In our opinion, all adjustments (which include only normal recurring adjustments) necessary to present fairly the financial position, results of operations and changes in cash flows have been made. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted. These condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q of the Securities and Exchange Commission (the “SEC”) and should be read in conjunction with the consolidated financial statements and notes thereto included in our Annual Report on Form 10-K, as amended, for the year ended December 31, 2011, as filed with the SEC.

We have made estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates. The results of operations for the three months ended March 31, 2012 are not necessarily indicative of the operating results for the full year. Certain prior year balances have been reclassified in order to conform to current year presentation.

Recently Issued Accounting Literature

3 Months Ended

Mar. 31, 2012

Recently Issued Accounting Literature

Recently Issued Accounting Literature

3. Recently Issued Accounting Literature

In May 2011, the Financial Accounting Standards Board (“FASB”) issued Update No. 2011-04, Fair Value Measurements (Topic 820): Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS (“ASU No. 2011-04”). ASU No. 2011-04 provides a uniform framework for fair value measurements and related disclosures between GAAP and International Financial Reporting Standards (“IFRS”) and requires additional disclosures, including: (i) quantitative information about unobservable inputs used, a description of the valuation processes used, and a qualitative discussion about the sensitivity of the measurements to changes in the unobservable inputs, for Level 3 fair value measurements; (ii) fair value of financial instruments not measured at fair value but for which disclosure of fair value is required, based on their levels in the fair value hierarchy; and (iii) transfers between Level 1 and Level 2 of the fair value hierarchy. The adoption of this update on January 1, 2012 did not have a material impact on our consolidated financial statements, but resulted in additional fair value measurement disclosures (see Note 12 – Fair Value Measurements).

- Definition

Tabular disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 154
-Paragraph 2, 17, 18
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 28
-Paragraph 23, 24
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 01
-Paragraph b
-Subparagraph 6
-Article 10

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6801783&loc=d3e22499-107794

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6801783&loc=d3e22580-107794

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Indirect Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6515603

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accounting Change
-URI http://asc.fasb.org/extlink&oid=6503790

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6507316

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6510796

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.10-01.(b)(6))
-URI http://asc.fasb.org/extlink&oid=6958853&loc=d3e46468-122699

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6801783&loc=d3e22583-107794

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Retrospective Application
-URI http://asc.fasb.org/extlink&oid=6523989

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e725-108305

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e765-108305

+ Details

Vornado Capital Partners Real Estate Fund (the "Fund")

3 Months Ended

Mar. 31, 2012

Vornado Capital Partners Real Estate Fund [Abstract]

Vornado Capital Partners Real Estate Fund (the "Fund") [Text Block]

4. Vornado Capital Partners Real Estate Fund (the “Fund”)

In February 2011, the Fund's subscription period closed with an aggregate of $800,000,000 of capital commitments, of which we committed $200,000,000. We are the general partner and investment manager of the Fund, which has an eight-year term and a three-year investment period. During the investment period, which concludes in July 2013, the Fund is our exclusive investment vehicle for all investments that fit within its investment parameters, as defined. The Fund is accounted for under the AICPA Investment Company Guide and its investments are reported on its balance sheet at fair value, with changes in value each period recognized in earnings. We consolidate the accounts of the Fund into our consolidated financial statements, retaining the fair value basis of accounting.

As of March 31, 2012, the Fund has five investments with an aggregate fair value of approximately $324,514,000, or $18,839,000 in excess of cost, and has remaining unfunded commitments of $445,679,000, of which our share is $111,419,750. Below is a summary of income from the Fund for the three months ended March 31, 2012 and 2011.

		For the Three Months
(Amounts in thousands)		Ended March 31,
		2012		2011
Operating income		$	4,918	$	1,080
Net unrealized gains			6,844		-
Income from Real Estate Fund			11,762		1,080
Less (income) loss attributable to noncontrolling interests			(7,933)		74
Income from Real Estate Fund attributable to Vornado ⁽¹⁾		$	3,829	$	1,154

___________________________________
___________________________________
(1)	Excludes $541 and $579 of management, leasing and development fees in the three months ended March 31, 2012 and 2011, respectively, which are included as a component of "fee and other income" on our consolidated statements of income.

Marketable Securities and Derivative Instruments

3 Months Ended

Mar. 31, 2012

Marketable Securities and Derivative Instruments [Abstract]

Derivative Instrument and Marketable Securities

5. Marketable Securities and Derivative Instruments

Marketable Securities

Our portfolio of marketable securities is comprised of debt and equity securities that are classified as available for sale. Available for sale securities are presented on our consolidated balance sheets at fair value. Gains and losses resulting from the mark-to-market of these securities are included in “other comprehensive income.” Gains and losses are recognized in earnings only upon the sale of the securities and are recorded based on the weighted average cost of such securities.

In the three months ended March 31, 2011, we sold certain marketable securities for aggregate proceeds of $15,162,000, resulting in a net gain of $2,091,000

Below is a summary of our marketable securities portfolio as of March 31, 2012 and December 31, 2011.

		As of March 31, 2012							As of December 31, 2011
					GAAP		Unrealized					GAAP		Unrealized
		Maturity	Fair Value		Cost		Gain		Maturity	Fair Value		Cost		Gain
Equity securities:
	J.C. Penney	n/a	$	658,431	$	591,069	$	67,362	n/a	$	653,228	$	591,069	$	62,159
	Other	n/a		36,503		13,561		22,942	n/a		29,544		13,561		15,983
Debt securities		04/13 - 10/18		59,576		55,460		4,116	04/13 - 10/18		58,549		54,965		3,584
			$	754,510	$	660,090	$	94,420		$	741,321	$	659,595	$	81,726

5. Marketable Securities and Derivative Instruments- continued

Investment in J.C. Penney Company, Inc. (“J.C. Penney”) (NYSE: JCP)

We own 23,400,000 J.C. Penney common shares, or 11.0% of its outstanding common shares. Below are the details of our investment.

We own 18,584,010 common shares at an average economic cost of $25.75 per share, or $478,532,000 in the aggregate. As of March 31, 2012, these shares have an aggregate fair value of $658,431,000, based on J.C. Penney's closing share price of $35.43 per share. Unrealized gains from the mark-to-market of these shares are included in “other comprehensive income” and were $5,203,000 and $66,903,000 in the three months ended March 31, 2012 and 2011, respectively.

We also own an economic interest in 4,815,990 common shares through a forward contract executed on October 7, 2010, at a weighted average strike price of $28.86 per share, or $138,986,000 in the aggregate. The contract may be settled, at our election, in cash or common shares, in whole or in part, at any time prior to October 9, 2012. The strike price per share increases at an annual rate of LIBOR plus 80 basis points. The contract is a derivative instrument that does not qualify for hedge accounting treatment. Mark-to-market adjustments on the underlying common shares are recognized in “interest and other investment income, net” on our consolidated statements of income. In the three months ended March 31, 2012 and 2011, we recognized gains of $1,045,000 and $17,163,000, respectively, from the mark-to-market of the underlying common shares.

As of March 31, 2012, the aggregate economic net gain on our investment in J.C. Penney was $211,544,000, based on our economic cost of $26.39 per share.

Investments in Partially Owned Entities

3 Months Ended

Mar. 31, 2012

Investments in Partially Owned Entities [Abstract]

Investments in Partially Owned Entities

6. Investments in Partially Owned Entities

Toys “R” Us (“Toys”)

As of March 31, 2012, we own 32.7% of Toys. The business of Toys is highly seasonal. Historically, Toys' fourth quarter net income accounts for more than 80% of its fiscal year net income. We account for our investment in Toys under the equity method and record our 32.7% share of Toys net income or loss on a one-quarter lag basis because Toys' fiscal year ends on the Saturday nearest January 31, and our fiscal year ends on December 31. As of March 31, 2012, the carrying amount of our investment in Toys does not differ materially from our share of the equity in the net assets of Toys on a purchase accounting basis.

Below is a summary of Toys' latest available financial information on a purchase accounting basis:

(Amounts in thousands)		Balance as of
Balance Sheet:		January 28, 2012		October 29, 2011
	Assets	$	11,890,000	$	13,221,000
	Liabilities		9,894,000		11,530,000
	Noncontrolling interests		29,000		-
	Toys “R” Us, Inc. equity		1,967,000		1,691,000

		For the Three Months Ended
Income Statement:		January 28, 2012		January 29, 2011
	Total revenues	$	5,925,000	$	5,972,000
	Net income attributable to Toys		349,000		339,000

6. Investments in Partially Owned Entities – continued

Alexander's, Inc. (“Alexander's”) (NYSE: ALX)

As of March 31, 2012, we own 1,654,068 Alexander's common shares, or approximately 32.4% of Alexander's common equity. We manage, lease and develop Alexander's properties pursuant to agreements which expire in March of each year and are automatically renewable. As of March 31, 2012, Alexander's owed us $40,685,000 in fees under these agreements.

As of March 31, 2012, the market value of our investment in Alexander's, based on Alexander's March 31, 2012 closing share price of $393.88, was $651,504,000, or $462,362,000 in excess of the carrying amount on our consolidated balance sheet. As of March 31, 2012, the carrying amount of our investment in Alexander's, excluding amounts owed to us, exceeds our share of the equity in the net assets of Alexander's by approximately $58,833,000. The majority of this basis difference resulted from the excess of our purchase price for the Alexander's common stock acquired over the book value of Alexander's net assets. Substantially all of this basis difference was allocated, based on our estimates of the fair values of Alexander's assets and liabilities, to real estate (land and buildings). We are amortizing the basis difference related to the buildings into earnings as additional depreciation expense over their estimated useful lives. This depreciation is not material to our share of equity in Alexander's net income. The basis difference related to the land will be recognized upon disposition of our investment.

Below is a summary of Alexander's latest available financial information:

(Amounts in thousands)		Balance as of
Balance Sheet:		March 31, 2012		December 31, 2011
	Assets	$	1,773,000	$	1,771,000
	Liabilities		1,410,000		1,408,000
	Noncontrolling interests		4,000		4,000
	Stockholders' equity		359,000		359,000

		For the Three Months Ended
Income Statement:		March 31, 2012		March 31, 2011
	Total revenues	$	64,000	$	63,000
	Net income attributable to Alexander’s		19,000		18,000

Lexington Realty Trust (“Lexington”) (NYSE: LXP)

As of March 31, 2012, we own 18,468,969 Lexington common shares, or approximately 11.9% of Lexington's common equity. We account for our investment in Lexington under the equity method because we believe we have the ability to exercise significant influence over Lexington's operating and financial policies, based on, among other factors, our representation on Lexington's Board of Trustees and the level of our ownership in Lexington as compared to other shareholders. We record our pro rata share of Lexington's net income or loss on a one-quarter lag basis because we file our consolidated financial statements on Form 10-K and 10-Q prior to the time that Lexington files its consolidated financial statements.

Based on Lexington's March 31, 2012 closing share price of $8.99, the market value of our investment in Lexington was $166,036,000, or $109,930,000 in excess of the March 31, 2012 carrying amount on our consolidated balance sheet. As of March 31, 2012, the carrying amount of our investment in Lexington was less than our share of the equity in the net assets of Lexington by approximately $45,082,000. This basis difference resulted primarily from $107,882,000 of non-cash impairment charges recognized in 2008, partially offset by purchase accounting for our acquisition of an additional 8,000,000 common shares of Lexington in October 2008, of which the majority relates to our estimate of the fair values of Lexington's real estate (land and buildings) as compared to the carrying amounts in Lexington's consolidated financial statements. The basis difference related to the buildings is being amortized over their estimated useful lives as an adjustment to our equity in net income or loss of Lexington. This amortization is not material to our share of equity in Lexington's net income or loss. The basis difference attributable to the land will be recognized upon disposition of our investment.

6. Investments in Partially Owned Entities – continued

Below is a summary of Lexington's latest available financial information:

(Amounts in thousands)		Balance as of
Balance Sheet:		December 31, 2011		September 30, 2011
	Assets	$	3,078,000	$	3,164,000
	Liabilities		1,857,000		1,888,000
	Noncontrolling interests		58,000		59,000
	Shareholders’ equity		1,163,000		1,217,000

		For the Three Months Ended
Income Statement:		December 31, 2011		December 31, 2010
	Total revenues	$	83,000	$	86,000
	Net income attributable to Lexington		13,000		12,000

LNR Property LLC (“LNR”)

As of March 31, 2012, we own a 26.2% equity interest in LNR. We account for our investment in LNR under the equity method and record our 26.2% share of LNR's net income or loss on a one-quarter lag basis because we file our consolidated financial statements on Form 10-K and 10-Q prior to receiving LNR's consolidated financial statements.

LNR consolidates certain Commercial Mortgage-Backed Securities (“CMBS”) and Collateralized Debt Obligation (“CDO”) trusts for which it is the primary beneficiary. The assets of these trusts (primarily commercial mortgage loans), which aggregate approximately $78.7 billion as of December 31, 2011, are the sole source of repayment of the related liabilities, which are non-recourse to LNR and its equity holders, including us. Changes in the fair value of these assets each period are offset by changes in the fair value of the related liabilities through LNR's consolidated income statement. As of March 31, 2012, the carrying amount of our investment in LNR does not materially differ from our share of LNR's equity.

Below is a summary of LNR's latest available financial information:

(Amounts in thousands)		Balance as of
Balance Sheet:		December 31, 2011		September 30, 2011
	Assets	$	79,951,000	$	128,536,000
	Liabilities		79,214,000		127,809,000
	Noncontrolling interests		16,000		55,000
	LNR Property Corporation equity		721,000		672,000

		For the Three Months Ended
Income Statement:		December 31, 2011		December 31, 2010
	Total revenues	$	49,000	$	36,000
	Net income attributable to LNR		51,000		58,000

6. Investments in Partially Owned Entities – continued

Below is a schedule of our investments in partially owned entities as of March 31, 2012 and December 31, 2011.

			Percentage		Balance as of
(Amounts in thousands)			Ownership at		March 31,		December 31,
Investments:			March 31, 2012		2012		2011
Toys				32.7%	$	597,860	$	506,809

Alexander’s				32.4%	$	189,142	$	189,775

Lexington				11.9%⁽¹⁾		56,106		57,402

LNR				26.2%		187,251		174,408

India real estate ventures				4.0%-36.5%		100,571		80,499

Partially owned office buildings:
	280 Park Avenue			49.5%		182,998		184,516
	Rosslyn Plaza			43.7%-50.4%		62,562		53,333
	West 57th Street properties			50.0%		58,841		58,529
	One Park Avenue			30.3%		47,899		47,568
	666 Fifth Avenue Office Condominium			49.5%		31,769		23,655
	330 Madison Avenue			25.0%		22,238		20,353
	1101 17th Street			55.0%		21,056		20,407
	Fairfax Square			20.0%		6,199		6,343
	Warner Building			55.0%		4,746		2,715
	Other partially owned office buildings			Various		10,991		11,547

Other equity method investments:
	Verde Realty Operating Partnership			8.3%		59,478		59,801
	Independence Plaza			51.0%		50,194		48,511
	Downtown Crossing, Boston			50.0%		46,821		46,691
	Monmouth Mall			50.0%		7,805		7,536
	Other equity method investments⁽²⁾			Various		138,437		140,061
					$	1,285,104	$	1,233,650


(1)		12.0% at December 31, 2011.

(2)		Includes interests in 85 10th Avenue, Farley Project, Suffolk Downs, Dune Capital L.P., Fashion Centre Mall and others.

6. Investments in Partially Owned Entities - continued

Below is a schedule of income recognized from investments in partially owned entities for the three months ended March 31, 2012 and 2011.

			Percentage	For the Three Months
(Amounts in thousands)			Ownership	Ended March 31,
Our Share of Net Income (Loss):			March 31, 2012	2012		2011
Toys:			32.7%
	Equity in net income before income taxes			$	157,387	$	179,839
	Income tax expense				(43,203)		(69,018)
	Equity in net income				114,184		110,821
	Management fees				2,287		2,123
				$	116,471	$	112,944

Alexander’s:			32.4%
	Equity in net income			$	6,132	$	5,719
	Management, leasing and development fees				2,262		2,292
					8,394		8,011

Lexington:			11.9%⁽¹⁾
	Equity in net income				930		720
	Net gain resulting from Lexington's stock issuance				-		1,452
					930		2,172

LNR:			26.2%
	Equity in net income				13,250		6,277
	Tax settlement gain				-		8,977
					13,250		15,254

India real estate ventures			4.0%-36.5%		(793)		(207)

Partially owned office buildings:
	Warner Building		55.0%
		Equity in net income			(3,010)		(300)
		Straight-line reserves and write-off of tenant improvements			-		(9,022)
					(3,010)		(9,322)
	280 Park Avenue (acquired in May 2011)		49.5%		(5,595)		-
	666 Fifth Avenue Office Condominium (acquired in December 2011)		49.5%		1,715		-
	330 Madison Avenue		25.0%		794		619
	1101 17th Street		55.0%		683		723
	One Park Avenue (acquired in March 2011)		30.3%		331		(1,228)
	West 57th Street properties		50.0%		313		98
	Rosslyn Plaza		43.7%-50.4%		158		2,415
	Fairfax Square		20.0%		(12)		(13)
	Other partially owned office buildings		Various		527		2,089
					(4,096)		(4,619)

Other equity method investments:
	Independence Plaza (acquired in June 2011)		51.0%		1,682		-
	Monmouth Mall		50.0%		362		131
	Downtown Crossing, Boston		50.0%		(334)		(506)
	Verde Realty Operating Partnership		8.3%		(323)		(1,794)
	Other equity method investments⁽²⁾		Various		961		(2,158)
					2,348		(4,327)

				$	20,033	$	16,284

(1)		12.6% at March 31, 2011.

(2)		Includes interests in 85 10th Avenue, Farley Project, Suffolk Downs, Dune Capital L.P., Fashion Centre Mall and others.

6. Investments in Partially Owned Entities – continued

Below is a summary of the debt of our partially owned entities as of March 31, 2012 and December 31, 2011, none of which is recourse to us.

					Interest	100% of
			Percentage		Rate at	Partially Owned Entities’ Debt at
(Amounts in thousands)			Ownership at		March 31,	March 31,		December 31,
			March 31, 2012	Maturity	2012	2012		2011
Toys:			32.7%
	Notes and mortgages payable			2012-2021	7.67%	$	5,110,529	$	6,047,521

Alexander's:			32.4%
	Mortgage notes payable			2013-2018	3.52%	$	1,327,234	$	1,330,932

Lexington:			11.9%⁽¹⁾
	Mortgage notes payable			2012-2037	5.78%	$	1,673,470	$	1,712,750

LNR:			26.2%
	Mortgage notes payable			2013-2031	4.29%	$	392,952	$	353,504
	Liabilities of consolidated CMBS and CDO trusts			n/a	5.35%		78,714,179		127,348,336
						$	79,107,131	$	127,701,840

Partially owned office buildings:
	666 Fifth Avenue Office Condominium mortgage
		note payable	49.5%	02/19	6.76%	$	1,050,235	$	1,035,884
	280 Park Avenue mortgage notes payable		49.5%	06/16	6.65%		737,892		737,678
	Warner Building mortgage note payable		55.0%	05/16	6.26%		292,700		292,700
	One Park Avenue mortgage note payable		30.3%	03/16	5.00%		250,000		250,000
	330 Madison Avenue mortgage note payable		25.0%	06/15	1.74%		150,000		150,000
	Fairfax Square mortgage note payable		20.0%	12/14	7.00%		70,768		70,974
	Rosslyn Plaza mortgage note payable		43.7% to 50.4%	n/a	n/a		-		56,680
	West 57th Street properties mortgage note payable		50.0%	02/14	4.94%		21,225		21,864
	Other		Various	Various	6.38%		70,102		70,230
						$	2,642,922	$	2,686,010

India Real Estate Ventures:
	TCG Urban Infrastructure Holdings mortgage notes
		payable	25.0%	2012-2022	12.61%	$	239,543	$	226,534

Other:
	Verde Realty Operating Partnership mortgage notes
		payable	8.3%	2013-2025	6.21%	$	311,112	$	340,378
	Monmouth Mall mortgage note payable		50.0%	09/15	5.44%		161,589		162,153
	Other⁽²⁾		Various	Various	4.88%		975,154		992,872
						$	1,447,855	$	1,495,403


(1)		12.0% at December 31, 2011.

(2)		Includes interests in Suffolk Downs, Fashion Centre Mall and others.

Based on our ownership interest in the partially owned entities above, our pro rata share of the debt of these partially owned entities was $24,477,803,000 and $37,531,298,000 as of March 31, 2012 and December 31, 2011, respectively. Excluding our pro rata share of LNR's liabilities related to consolidated CMBS and CDO trusts, which are non-recourse to LNR and its equity holders, including us, our pro rata share of partially owned entities debt was $3,875,154,000 and $4,199,145,000 at March 31, 2012 and December 31, 2011, respectively.

- Definition

The entire disclosure for equity investment, or group of investments, for which combined disclosure is appropriate, including: (a) the name of each investee and percentage of ownership of common stock, (b) accounting policies for investments in common stock, (c) difference between the amount at which the investment is carried and the amount of underlying equity in net assets and the accounting treatment of the difference, (d) the total fair value of each identified investment for which a market value is available, (e) summarized information as to assets, liabilities, and results of operations of the investees (for investments in unconsolidated subsidiaries, common stock of joint ventures, or other investments using the equity method), and (f) material effects of possible conversions, exercises, or contingent issuances of the investee. Other disclosures include (a) the names of any investee in which the investor owns 20 percent or more of the voting stock and investment is not accounted for using the equity method, and the reasons why not, and (b) the names of any investee in which the investor owns less than 20 percent of the voting stock and the investment is accounted for using the equity method, and the reasons why it is.

+ References + Details

Mezzanine Loans Receivable

3 Months Ended

Mar. 31, 2012

Mezzanine Loans Receivable [Abstract]

Mezzanine Loans Receivable

7. Mezzanine Loans Receivable

As of March 31, 2012 and December 31, 2011, the carrying amount of mezzanine loans receivable was $133,143,000 and $133,948,000, respectively. These loans have a weighted average interest rate of 9.53% and maturities ranging from August 2014 to May 2016.

Discontinued Operations

3 Months Ended

Mar. 31, 2012

Discontinued Operations [Abstract]

Discontinued Operations

8. Discontinued Operations

On January 6, 2012, we completed the sale of 350 West Mart Center, a 1.2 million square foot office building in Chicago, Illinois, for $228,000,000 in cash, which resulted in a net gain of $54,911,000.

In the first quarter of 2012, we sold seven retail properties in separate transactions, for an aggregate of $83,670,000 in cash, which resulted in a net gain aggregating $906,000.

The tables below set forth the assets and liabilities related to discontinued operations at March 31, 2012 and December 31, 2011 and their combined results of operations for the three months ended March 31, 2012 and 2011.

	Assets Related to				Liabilities Related to
(Amounts in thousands)	Discontinued Operations as of				Discontinued Operations as of
	March 31,		December 31,		March 31,		December 31,
	2012		2011		2012		2011
350 West Mart Center	$	-	$	173,780	$	-	$	6,361
Retail properties		-		77,422		-		7,792
Total	$	-	$	251,202	$	-	$	14,153


					For the Three Months
(Amounts in thousands)					Ended March 31,
					2012		2011
Total revenues					$	1,320	$	16,215
Total expenses						422		13,661
						898		2,554
Net gain on sale of 350 West Mart Center						54,911		-
Net gain on extinguishment of High Point debt						-		83,907
Net gain on sale of 1140 Connecticut Avenue and 1227 25th Street						-		45,862
Net gain on sales of other real estate						906		5,303
Income from discontinued operations					$	56,715	$	137,626

- Definition

The entire disclosure for the facts and circumstances leading to the completed or expected disposal, manner and timing of disposal, the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the segment in which the disposal group was reported, and the classification (whether sold or classified as held for sale) and carrying value of the assets and liabilities comprising the disposal group. Includes all disposal groups, including those classified as components of the entity (discontinued operations).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 144
-Paragraph 43-48
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2941-110230

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1510-107760

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1020-107759

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1012-107759

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1474-107760

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6390789&loc=d3e2443-110228

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1436-107760

+ Details

Identified Intangible Assets and Liabilities

3 Months Ended

Mar. 31, 2012

Identified Intangible Assets and Liabilities [Abstract]

Identified Intangible Assets and Intangible Liabilities

9. Identified Intangible Assets and Liabilities

The following summarizes our identified intangible assets (primarily acquired above-market leases) and liabilities (primarily acquired below-market leases) as of March 31, 2012 and December 31, 2011.

	Balance as of
	March 31,		December 31,
(Amounts in thousands)	2012		2011
Identified intangible assets:
Gross amount	$	666,241	$	679,648
Accumulated amortization		(361,856)		(359,944)
Net	$	304,385	$	319,704
Identified intangible liabilities (included in deferred revenue):
Gross amount	$	837,729	$	841,440
Accumulated amortization		(385,886)		(374,253)
Net	$	451,843	$	467,187

Amortization of acquired below-market leases, net of acquired above-market leases, resulted in an increase to rental income of $13,813,000 and $16,606,000 for the three months ended March 31, 2012 and 2011, respectively. Estimated annual amortization of acquired below-market leases, net of acquired above-market leases, for each of the five succeeding years commencing January 1, 2013 is as follows:

(Amounts in thousands)
2013	$	44,133
2014		37,504
2015		34,399
2016		31,339
2017		25,819

Amortization of all other identified intangible assets (a component of depreciation and amortization expense) was $12,366,000 and $14,155,000 for the three months ended March 31, 2012 and 2011, respectively. Estimated annual amortization of all other identified intangible assets including acquired in-place leases, customer relationships, and third party contracts for each of the five succeeding years commencing January 1, 2013 is as follows:

(Amounts in thousands)
2013	$	40,162
2014		21,758
2015		16,757
2016		14,156
2017		11,709

We are a tenant under ground leases for certain properties. Amortization of these acquired below-market leases, net of above-market leases resulted in an increase to rent expense of $344,000 and $344,000 for the three months ended March 31, 2012 and 2011, respectively. Estimated annual amortization of these below-market leases, net of above-market leases for each of the five succeeding years commencing January 1, 2013 is as follows:

(Amounts in thousands)
2013	$	1,377
2014		1,377
2015		1,377
2016		1,377
2017		1,377

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Debt

3 Months Ended

Mar. 31, 2012

Debt Disclosure [Abstract]

Debt

10. Debt

The following is a summary of our debt:

				Interest
(Amounts in thousands)				Rate at	Balance at
				March 31,	March 31,		December 31,
Notes and mortgages payable:			Maturity (1)	2012	2012		2011
Fixed rate:
	New York:
		350 Park Avenue⁽²⁾	01/17	3.75%	$	300,000	$	430,000
		Two Penn Plaza	03/18	5.13%		425,000		425,000
		1290 Avenue of the Americas	01/13	5.97%		411,661		413,111
		770 Broadway	03/16	5.65%		353,000		353,000
		888 Seventh Avenue	01/16	5.71%		318,554		318,554
		909 Third Avenue	04/15	5.64%		202,218		203,217
		828-850 Madison Avenue Condominium - retail	06/18	5.29%		80,000		80,000
		510 5th Avenue - retail	01/16	5.60%		31,612		31,732

	Washington, DC:
		Skyline Place⁽³⁾	02/17	5.74%		678,000		678,000
		River House Apartments	04/15	5.43%		195,546		195,546
		2121 Crystal Drive	03/23	5.51%		150,000		150,000
		Bowen Building	06/16	6.14%		115,022		115,022
		1215 Clark Street, 200 12th Street and 251 18th Street	01/25	7.09%		107,766		108,423
		West End 25	06/21	4.88%		101,671		101,671
		Universal Buildings	04/14	6.45%		97,003		98,239
		Reston Executive I, II, and III	01/13	5.57%		93,000		93,000
		2011 Crystal Drive	08/17	7.30%		80,256		80,486
		1550 and 1750 Crystal Drive	11/14	7.08%		75,946		76,624
		220 20th Street	02/18	4.61%		74,739		75,037
		1235 Clark Street	07/12	6.75%		51,045		51,309
		2231 Crystal Drive	08/13	7.08%		43,205		43,819
		1225 Clark Street	08/13	7.08%		25,844		26,211
		1750 Pennsylvania Avenue	n/a	n/a		-		44,330

	Retail:
		Cross-collateralized mortgages on 40 strip shopping centers	09/20	4.21%		582,389		585,398
		Montehiedra Town Center	07/16	6.04%		120,000		120,000
		Broadway Mall	07/13	5.30%		87,111		87,750
		North Bergen (Tonnelle Avenue)	01/18	4.59%		75,000		75,000
		Las Catalinas Mall	11/13	6.97%		55,471		55,912
		Other	06/14-05/36	5.12%-7.30%		87,841		95,541

	Merchandise Mart:
		Merchandise Mart	12/16	5.57%		550,000		550,000
		Boston Design Center	09/15	5.02%		67,042		67,350

	Other:
		555 California Street	09/21	5.10%		600,000		600,000
		Borgata Land	02/21	5.14%		60,000		60,000
Total fixed rate notes and mortgages payable				5.44%	$	6,295,942	$	6,489,282
___________________
		See notes on page 21.

10. Debt - continued

					Interest
(Amounts in thousands)					Rate at	Balance at
				Spread over	March 31,	March 31,		December 31,
Notes and mortgages payable:			Maturity (1)	LIBOR	2012	2012		2011
Variable rate:
	New York:
		Eleven Penn Plaza	01/19	L+235	2.59%	$	330,000	$	330,000
		100 West 33rd Street - office & retail⁽⁴⁾	03/17	L+250	2.74%		325,000		232,000
		4 Union Square South - retail	04/14	L+325	3.49%		75,000		75,000
		435 Seventh Avenue ⁽⁵⁾	08/14	L+300⁽⁵⁾	5.00%		51,224		51,353
		866 UN Plaza	05/16	L+125	1.49%		44,978		44,978
	Washington, DC:
		2101 L Street	02/13	L+120	1.44%		148,125		150,000
		River House Apartments	04/18	n/a⁽⁶⁾	1.60%		64,000		64,000
		2200/2300 Clarendon Boulevard	01/15	L+75	0.99%		51,856		53,344
		1730 M and 1150 17th Street	06/14	L+140	1.64%		43,581		43,581
	Retail:
		Green Acres Mall	02/13	L+140	1.65%		308,825		325,045
		Bergen Town Center	03/13	L+150	1.74%		282,312		283,590
		San Jose Strip Center	03/13	L+400	4.25%		110,619		112,476
		Beverly Connection ⁽⁷⁾	09/14	L+425⁽⁷⁾	4.75%		100,000		100,000
		Cross-collateralized mortgages on 40 strip
		shopping centers ⁽⁸⁾	09/20	L+136⁽⁸⁾	2.36%		60,000		60,000
		Other	11/12	L+375	3.99%		19,726		19,876
	Other:
		220 Central Park South	10/13	L+275	2.99%		123,750		123,750
	Total variable rate notes and mortgages payable				2.48%		2,138,996		2,068,993
	Total notes and mortgages payable				4.69%	$	8,434,938	$	8,558,275

Senior unsecured notes:
	Senior unsecured notes due 2015		04/15		4.25%	$	499,503	$	499,462
	Senior unsecured notes due 2039 ⁽⁹⁾		10/39		7.88%		460,000		460,000
	Senior unsecured notes due 2022		01/22		5.00%		398,245		398,199
	Total senior unsecured notes				5.70%	$	1,357,748	$	1,357,661

3.88% exchangeable senior debentures⁽¹⁰⁾			04/12		5.32%	$	499,680	$	497,898

2.85% convertible senior debentures⁽¹⁰⁾			04/12		5.45%	$	10,233	$	10,168

Unsecured revolving credit facilities:
	$1.25 billion unsecured revolving credit facility
		($22,085 reserved for outstanding letters of credit)	06/16	L+135	-	$	-	$	-
	$1.25 billion unsecured revolving credit facility		11/16	L+125	-		-		138,000
	Total unsecured revolving credit facilities				-	$	-	$	138,000
___________________________
	See notes on the following page.

10. Debt - continued

	Notes to preceding tabular information (Amounts in thousands):

	(1)	Represents the extended maturity for certain loans in which we have the unilateral right, ability and intent to extend. In the case of our convertible and exchangeable debt, represents the earliest date holders may require us to repurchase the debentures.

	(2)	On January 9, 2012, we completed a $300,000 refinancing of this property. The five-year fixed rate loan bears interest at 3.75% and amortizes based on a 30-year schedule beginning in the third year. The proceeds of the new loan and $132,000 of existing cash were used to repay the existing loan and closing costs.

	(3)	In the first quarter of 2012, we notified the lender that this property had a 26% vacancy rate, which is expected to increase due to scheduled lease expirations resulting primarily from the effects of the Base Realignment and Closure statute. Based on the projected vacancy and the significant amount of capital required to re-tenant this property, at our request, the mortgage loan was transferred to the special servicer.

	(4)	On March 5, 2012, we completed a $325,000 refinancing of this property. The three-year loan bears interest at LIBOR plus 2.50% and has two one-year extension options. We retained net proceeds of approximately $87,000, after repaying the existing loan and closing costs.

	(5)	LIBOR floor of 2.00%.

	(6)	Interest at the Freddie Mac Reference Note Rate plus 1.53%.

	(7)	LIBOR floor of 0.50%.

	(8)	LIBOR floor of 1.00%.

	(9)	May be redeemed at our option in whole or in part beginning on October 1, 2014, at a price equal to the principal amount plus accrued interest.

	(10)	In April 2012, we redeemed all of the outstanding exchangeable and convertible senior debentures at par, for an aggregate of $510,215 in cash.

10. Debt – continued

Pursuant to the provisions of Accounting Standards Codification (“ASC”) 470-20, Debt with Conversion and Other Options, below is a summary of required disclosures related to our convertible and exchangeable senior debentures.

			3.88% Exchangeable				2.85% Convertible
(Amounts in thousands, except per share amounts)			Senior Debentures				Senior Debentures
			March 31,		December 31,		March 31,		December 31,
Balance Sheet:			2012		2011		2012		2011
	Principal amount of debt component		$	499,982	$	499,982	$	10,233	$	10,233
	Unamortized discount			(302)		(2,084)		-		(65)
	Carrying amount of debt component		$	499,680	$	497,898	$	10,233	$	10,168
	Carrying amount of equity component		$	32,301	$	32,301	$	956	$	956
	Effective interest rate			5.32%		5.32%		5.45%		5.45%
	Maturity date (period through which discount is being amortized)			4/15/12				4/1/12
	Conversion price per share, as adjusted		$	86.40			$	155.79
	Number of shares on which the aggregate consideration to be delivered
		delivered upon conversion is determined		-⁽¹⁾				-⁽¹⁾
__________________

(1)		In April 2012, we redeemed all of the outstanding exchangeable and convertible senior debentures at par, for an aggregate of $510,215 in cash.

		For the Three Months Ended
(Amounts in thousands)		March 31,
Income Statement:		2012		2011
3.88% Exchangeable Senior Debentures:
	Coupon interest	$	4,844	$	4,844
	Discount amortization – original issue		421		399
	Discount amortization – ASC 470-20 implementation		1,361		1,291
		$	6,626	$	6,534

2.85% Convertible Senior Debentures:
	Coupon interest	$	73	$	73
	Discount amortization – original issue		11		11
	Discount amortization – ASC 470-20 implementation		54		52
		$	138	$	136

3.63% Convertible Senior Debentures:
	Coupon interest	$	-	$	1,623
	Discount amortization – original issue		-		196
	Discount amortization – ASC 470-20 implementation		-		526
		$	-	$	2,345

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References + Details

Redeemable Noncontrolling Interests

3 Months Ended

Mar. 31, 2012

Redeemable Noncontrolling Interests [Abstract]

Redeemable Noncontrolling Interests

11. Redeemable Noncontrolling Interests

Redeemable noncontrolling interests on our consolidated balance sheets represent Operating Partnership units held by third parties and are comprised of Class A units and Series D-10, D-14, D-15 and D-16 (collectively, “Series D”) cumulative redeemable preferred units. Redeemable noncontrolling interests on our consolidated balance sheets are recorded at the greater of their carrying amount or redemption value at the end of each reporting period. Changes in the value from period to period are charged to “additional capital” in our consolidated statements of changes in equity. Below is a table summarizing the activity of redeemable noncontrolling interests.

(Amounts in thousands)
Balance at December 31, 2010	$	1,327,974
Net income		31,808
Distributions		(12,702)
Conversion of Class A units into common shares, at redemption value		(27,539)
Adjustments to carry redeemable Class A units at redemption value		42,227
Other, net		4,752
Balance at March 31, 2011	$	1,366,520


Balance at December 31, 2011	$	1,160,677
Net income		19,145
Distributions		(12,236)
Conversion of Class A units into common shares, at redemption value		(13,028)
Adjustments to carry redeemable Class A units at redemption value		96,061
Other, net		280
Balance at March 31, 2012	$	1,250,899

As of March 31, 2012 and December 31, 2011, the aggregate redemption value of redeemable Class A units was $1,024,899,000 and $934,677,000, respectively.

Redeemable noncontrolling interests exclude our Series G-1 through G-4 convertible preferred units and Series D-13 cumulative redeemable preferred units, as they are accounted for as liabilities in accordance with ASC 480, Distinguishing Liabilities and Equity, because of their possible settlement by issuing a variable number of Vornado common shares. Accordingly the fair value of these units is included as a component of “other liabilities” on our consolidated balance sheets and aggregated $55,097,000 and $54,865,000 as of March 31, 2012 and December 31, 2011, respectively.

Fair Value Measurements

3 Months Ended

Mar. 31, 2012

Fair Value Disclosures [Abstract]

Fair Value Disclosures [Text Block]

12. Fair Value Measurements

ASC 820, Fair Value Measurement and Disclosures defines fair value and establishes a framework for measuring fair value. The objective of fair value is to determine the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the exit price). ASC 820 establishes a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three levels: Level 1 – quoted prices (unadjusted) in active markets that are accessible at the measurement date for assets or liabilities; Level 2 – observable prices that are based on inputs not quoted in active markets, but corroborated by market data; and Level 3 – unobservable inputs that are used when little or no market data is available. The fair value hierarchy gives the highest priority to Level 1 inputs and the lowest priority to Level 3 inputs. In determining fair value, we utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible, as well as consider counterparty credit risk in our assessment of fair value. Considerable judgment is necessary to interpret Level 2 and 3 inputs in determining the fair value of our financial and non-financial assets and liabilities. Accordingly, our fair value estimates, which are made at the end of each reporting period, may be different than the amounts that may ultimately be realized upon sale or disposition of these assets.

Financial Assets and Liabilities Measured at Fair Value

Financial assets and liabilities that are measured at fair value in our consolidated financial statements consist of (i) marketable securities, (ii) derivative positions in marketable equity securities, (iii) the assets in our deferred compensation plan (for which there is a corresponding liability on our consolidated balance sheet), (iv) Real Estate Fund investments, and (v) mandatorily redeemable instruments (Series G-1 through G-4 convertible preferred units and Series D-13 cumulative redeemable preferred units). The tables below aggregate the fair values of these financial assets and liabilities by their levels in the fair value hierarchy at March 31, 2012 and December 31, 2011, respectively.

			As of March 31, 2012
(Amounts in thousands)			Total		Level 1		Level 2		Level 3
	Marketable securities		$	754,510	$	754,510	$	-	$	-
	Real Estate Fund investments (75% of which is attributable to
		noncontrolling interests)		324,514		-		-		324,514
	Deferred compensation plan assets (included in other assets)			99,810		40,929		-		58,881
	Derivative positions in marketable equity securities
		(included in other assets)		31,645		-		31,645		-
		Total assets	$	1,210,479	$	795,439	$	31,645	$	383,395

	Mandatorily redeemable instruments (included in other liabilities)		$	55,097	$	55,097	$	-	$	-

			As of December 31, 2011
(Amounts in thousands)			Total		Level 1		Level 2		Level 3
	Marketable securities		$	741,321	$	741,321	$	-	$	-
	Real Estate Fund investments (75% of which is attributable to
		noncontrolling interests)		346,650		-		-		346,650
	Deferred compensation plan assets (included in other assets)			95,457		39,236		-		56,221
	Derivative positions in marketable equity securities
		(included in other assets)		30,600		-		30,600		-
		Total assets	$	1,214,028	$	780,557	$	30,600	$	402,871

	Mandatorily redeemable instruments (included in other liabilities)		$	54,865	$	54,865	$	-	$	-

12. Fair Value Measurements – continued

Financial Assets and Liabilities Measured at Fair Value - continued

Real Estate Fund Investments

As of March 31, 2012, our real estate fund has five investments with an aggregate fair value of approximately $324,514,000, or $18,839,000 in excess of cost. These investments are classified as Level 3. We use a discounted cash flow valuation technique to estimate the fair value of each of these investments, which is updated quarterly by personnel responsible for the management of each investment and reviewed by senior management at each reporting period. The discounted cash flow valuation technique requires us to estimate cash flows for each investment over the anticipated holding period, which currently ranges from 2.3 to 6.8 years. Cash flows are derived from property rental revenue (base rents plus reimbursements) less operating expenses, real estate taxes and capital and other costs, plus projected sales proceeds in the year of exit. Property rental revenue is based on leases currently in place and our estimates for future leasing activity, which are based on current market rents for similar space plus a projected growth factor. Similarly, estimated operating expenses and real estate taxes are based on amounts incurred in the current period plus a projected growth factor for future periods. Anticipated sales proceeds at the end of an investment's expected holding period are determined based on the net cash flow of the investment in the year of exit, divided by a terminal capitalization rate, less estimated selling costs.

The fair value of each property is calculated by discounting the future cash flows (including the projected sales proceeds), using an appropriate discount rate and then reduced by the property's outstanding debt, if any, to determine the fair value of the equity in each investment. Significant unobservable quantitative inputs used in determining the fair value of each investment include capitalization rates and discount rates. These rates are based on the location, type and nature of each property, and current and anticipated market conditions, which are derived from original underwriting assumptions, industry publications and from the experience of our Acquisitions and Capital Markets departments. Significant unobservable quantitative inputs in the table below were utilized in determining the fair value of these Fund investments for the quarter ended March 31, 2012.

			Weighted Average
			(based on fair
Unobservable Quantitative Input		Range	value of investments)
	Discount rates	12.5% to 23.3%	15.0%
	Terminal capitalization rates	5.5% to 6.8%	5.9%

The above inputs are subject to change based on changes in economic and market conditions and/or changes in use or timing of exit. Changes in discount rates and terminal capitalization rates result in increases or decreases in the fair values of these investments. The discount rates encompass, among other things, uncertainties in the valuation models with respect to terminal capitalization rates and the amount and timing of cash flows. Therefore, a change in the fair value of these investments resulting from a change in the terminal capitalization rate, may be partially offset by a change in the discount rate. It is not possible for us to predict the effect of future economic or market conditions on our estimated fair values. The table below summarizes the changes in the fair value of Fund investments for the three months ended March 31, 2012 and 2011.

	For the Three Months Ended March 31,
(Amounts in thousands)	2012		2011
Beginning balance	$	346,650	$	144,423
Purchases		-		100,238
Sales		(31,052)		-
Realized and unrealized gains		6,844		698
Other, net		2,072		(14,702)
Ending balance	$	324,514	$	230,657

12. Fair Value Measurements – continued

Financial Assets and Liabilities Measured at Fair Value - continued

Deferred Compensation Plan Assets

Deferred compensation plan assets that are classified as Level 3 consist of investments in limited partnerships and investment funds, which are managed by third parties. We receive quarterly financial reports from a third-party administrator, which are compiled from the quarterly reports provided to them from each limited partnership and investment fund. The quarterly reports provide net asset values on a fair value basis which are audited by independent public accounting firms on an annual basis. The third-party administrator does not adjust these values in determining our share of the net assets and we do not adjust these values when reported in our consolidated financial statements. The table below summarizes the changes in the fair value of Deferred Compensation Plan Assets for the three months ended March 31, 2012 and 2011.

	For the Three Months Ended March 31,
(Amounts in thousands)	2012		2011
Beginning balance	$	56,221	$	47,850
Purchases		3,611		1,286
Sales		(3,395)		-
Realized and unrealized gains		2,392		3,623
Other, net		52		(1,147)
Ending balance	$	58,881	$	51,612

Financial Assets and Liabilities not Measured at Fair Value

Financial assets and liabilities that are not measured at fair value in our consolidated financial statements include mezzanine loans receivable and our secured and unsecured debt. Estimates of the fair values of these instruments are determined by the standard practice of modeling the contractual cash flows required under the instrument and discounting them back to their present value at the appropriate current risk adjusted interest rate, which is provided by a third-party specialist. For floating rate debt, we use forward rates derived from observable market yield curves to project the expected cash flows we would be required to make under the instrument. The fair value of our mezzanine loans receivable is classified as Level 3 and the fair value of our secured and unsecured debt is classified as Level 2. The table below summarizes the carrying amounts and fair values of these financial instruments as of March 31, 2012 and December 31, 2011.

			As of March 31, 2012				As of December 31, 2011
			Carrying		Fair		Carrying		Fair
(Amounts in thousands)			Amount		Value		Amount		Value
	Mezzanine loans receivable		$	133,143	$	128,000	$	133,948	$	129,000
	Debt:
		Notes and mortgages payable	$	8,434,938	$	8,505,000	$	8,558,275	$	8,686,000
		Senior unsecured notes		1,357,748		1,439,000		1,357,661		1,426,000
		Exchangeable senior debentures		499,680		501,000		497,898		510,000
		Convertible senior debentures		10,233		10,000		10,168		10,000
		Revolving credit facility debt		-		-		138,000		138,000
			$	10,302,599	$	10,455,000	$	10,562,002	$	10,770,000

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A, 44B
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15C, 15D
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15A
-Subparagraph a-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15B
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 3, 10, 14, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32, 33, 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 17-22, 27, 28
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13537-108611

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Reference 11: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 30
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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+ Details

Stock-based Compensation

3 Months Ended

Mar. 31, 2012

Stock-based Compensation [Abstract]

Stock-based Compensation

13. Incentive Compensation

Our Omnibus Share Plan (the “Plan”) provides for grants of incentive and non-qualified stock options, restricted stock, restricted Operating Partnership units and out-performance plan rewards to certain of our employees and officers. We account for all stock-based compensation in accordance ASC 718, Compensation – Stock Compensation. Stock-based compensation expense for the three months ended March 31, 2012 and 2011 consists of stock option awards, restricted stock awards, Operating Partnership unit awards and out-performance plan awards. Stock-based compensation expense was $6,609,000 and $7,146,000 in the three months ended March 31, 2012 and 2011, respectively.

On March 30, 2012, our Compensation Committee (the “Committee”) approved the 2012 formulaic annual incentive program for our senior executive management team. Under the program, our senior executive management team, including our Chairman and our President and Chief Executive Officer, will have the ability to earn annual incentive payments (cash or equity) if and only if we achieve comparable funds from operations (“Comparable FFO”) of at least 80% or more of the prior year Comparable FFO. Moreover, even if we achieve the stipulated Comparable FFO performance requirement, the Committee retains the right, consistent with best practices, to elect to make no payments under the program. Comparable FFO excludes the impact of certain non-recurring items such as income or loss from discontinued operations, the sale or mark-to-market of marketable securities or derivatives and early extinguishment of debt, restructuring costs and non-cash impairment losses, among others, and thus the Committee believes provides a better metric than total FFO for assessing management's performance for the year. Aggregate incentive awards earned under the program are subject to a cap of 1.25% of Comparable FFO for the year, with individual award allocations determined by the Committee based on an assessment of individual and overall performance.

On March 30, 2012, the Committee also approved the 2012 Out-Performance Plan, a multi-year, performance-based equity compensation plan (the “2012 OPP”). The aggregate notional amount of the 2012 OPP is $40,000,000. Under the 2012 OPP, participants, including our Chairman and our President and Chief Executive Officer, have the opportunity to earn compensation payable in the form of equity awards if and only if we outperform a predetermined total shareholder return (“TSR”) and/or outperform the market with respect to a relative TSR in any year during a three-year performance period. Specifically, awards under our 2012 OPP may be earned if we (i) achieve a TSR above that of the SNL US REIT Index (the “Index”) over a one-year, two-year or three-year performance period (the “Relative Component”), and/or (ii) achieve a TSR level greater than 7% per annum, or 21% over the three-year performance period (the “Absolute Component”). To the extent awards would be earned under the Absolute Component of the 2012 OPP but we underperform the Index, such awards would be reduced (and potentially fully negated) based on the degree to which we underperform the Index. In certain circumstances, in the event we outperform the Index but awards would not otherwise be earned under the Absolute Component, awards may still be earned under the Relative Component. To the extent awards would otherwise be earned under the Relative Component but we fail to achieve at least a 6% per annum absolute TSR level, such awards would be reduced based on our absolute TSR performance, with no awards being earned in the event our TSR during the applicable measurement period is 0% or negative, irrespective of the degree to which we may outperform the Index. If the designated performance objectives are achieved, OPP Units are also subject to time-based vesting requirements. Dividends on awards issued accrue during the performance period and are paid to participants if and only if awards are ultimately earned based on the achievement of the designated performance objectives. Awards earned under the 2012 OPP vest 33% in year three, 33% in year four and 34% in year five. The fair value of the 2012 OPP on the date of grant, as adjusted for estimated forfeitures, was $12,250,000, and is being amortized into expense over a five-year period from the date of grant, using a graded vesting attribution model.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

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-URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929

+ Details

Fee and Other Income

3 Months Ended

Mar. 31, 2012

Fee and Other Income [Abstract]

Fee and Other Income

14. Fee and Other Income

The following table sets forth the details of our fee and other income:

	For the Three Months
(Amounts in thousands)	Ended March 31,
	2012		2011
BMS cleaning fees	$	15,510	$	15,423
Management and leasing fees		4,381		4,106
Lease termination fees		411		1,176
Other income		13,085		13,558
	$	33,387	$	34,263

Fee and other income above includes management fee income from Interstate Properties, a related party, of $199,000 and $197,000 for the three months ended March 31, 2012 and 2011, respectively. The above table excludes management fee income from Alexander's and Toys, among others, which is included in income from partially owned entities (see Note 6 – Investments in Partially Owned Entities).

Interest and Other Investment (Loss) Income, Net

3 Months Ended

Mar. 31, 2012

Interest and Other Investment (Loss) Income, net [Abstract]

Interest and Other Investment Income, Net

15. Interest and Other Investment Income, Net

The following table sets forth the details of our interest and other investment income:

		For the Three Months
(Amounts in thousands)		Ended March 31,
		2012		2011
Dividends and interest on marketable securities		$	6,247	$	7,667
Mark-to-market of investments in our deferred compensation plan⁽¹⁾			4,127		4,952
Interest on mezzanine loans			2,851		2,644
Income from the mark-to-market of J.C. Penney derivative position			1,045		17,163
Mezzanine loans loss reversal and net gain on disposition			-		82,744
Other, net			1,411		1,938
		$	15,681	$	117,108
__________________________

(1)	This income is entirely offset by the expense resulting from the mark-to-market of the deferred compensation plan liability, which is included in "general and administrative" expense.

- Definition

Tabular disclosure of investment income derived from investments in debt and equity securities consisting of interest income earned from investments in debt securities and on cash and cash equivalents, dividend income from investments in equity securities, and income or expense derived from the amortization of investment related discounts or premiums, respectively. This item does not include realized or unrealized gains or losses on the sale or holding of investments in debt and equity securities required to be included in earnings for the period or for other than temporary losses related to investments in debt and equity securities which are included in realized losses in the period recognized.

+ References + Details

Income Per Share

3 Months Ended

Mar. 31, 2012

Income Per Share [Abstract]

Income Per Share

16. Income Per Share

The following table provides a reconciliation of both net income and the number of common shares used in the computation of (i) basic income per common share - which includes the weighted average number of common shares outstanding without regard to dilutive potential common shares, and (ii) diluted income per common share - which includes the weighted average common shares and dilutive share equivalents. Dilutive share equivalents may include our Series A convertible preferred shares, employee stock options, restricted stock and exchangeable senior debentures.

			For the Three Months
(Amounts in thousands, except per share amounts)			Ended March 31,
			2012		2011
Numerator:
	Income from continuing operations, net of income attributable to noncontrolling interests		$	198,285	$	283,636
	Income from discontinued operations, net of income attributable to noncontrolling interests			53,237		129,027
	Net income attributable to Vornado			251,522		412,663
	Preferred share dividends			(17,787)		(13,448)
	Net income attributable to common shareholders			233,735		399,215
	Earnings allocated to unvested participating securities			(69)		(46)
	Numerator for basic income per share			233,666		399,169
	Impact of assumed conversions:
		Interest on 3.88% exchangeable senior debentures		6,626		6,534
		Convertible preferred share dividends		29		32
	Numerator for diluted income per share		$	240,321	$	405,735

Denominator:
	Denominator for basic income per share – weighted average shares			185,370		183,988
	Effect of dilutive securities⁽¹⁾:
		3.88% exchangeable senior debentures		5,736		5,736
		Employee stock options and restricted share awards		730		1,749
		Convertible preferred shares		50		56
	Denominator for diluted income per share – weighted average shares and assumed conversions			191,886		191,529

INCOME PER COMMON SHARE – BASIC:
	Income from continuing operations, net		$	0.97	$	1.47
	Income from discontinued operations, net			0.29		0.70
	Net income per common share		$	1.26	$	2.17

INCOME PER COMMON SHARE – DILUTED:
	Income from continuing operations, net		$	0.97	$	1.45
	Income from discontinued operations, net			0.28		0.67
	Net income per common share		$	1.25	$	2.12


(1)		The effect of dilutive securities in the three months ended March 31, 2012 and 2011 excludes an aggregate of 12,943 and 12,786 weighted average common share equivalents, respectively, as their effect was anti-dilutive.

Commitments and Contingencies

3 Months Ended

Mar. 31, 2012

Commitments and Contingencies [Abstract]

Commitments and Contingencies

17. Commitments and Contingencies

Insurance

We maintain general liability insurance with limits of $300,000,000 per occurrence and all risk property and rental value insurance with limits of $2.0 billion per occurrence, including coverage for terrorist acts, with sub-limits for certain perils such as floods. Our California properties have earthquake insurance with coverage of $180,000,000 per occurrence, subject to a deductible in the amount of 5% of the value of the affected property, up to a $180,000,000 annual aggregate.

Penn Plaza Insurance Company, LLC (“PPIC”), our wholly owned consolidated subsidiary, acts as a re-insurer with respect to a portion of all risk property and rental value insurance and a portion of our earthquake insurance coverage, and as a direct insurer for coverage for acts of terrorism, including nuclear, biological, chemical and radiological (“NBCR”) acts, as defined by the Terrorism Risk Insurance Program Reauthorization Act. Coverage for acts of terrorism (excluding NBCR acts) is fully reinsured by third party insurance companies and the Federal government with no exposure to PPIC. Coverage for NBCR losses is up to $2.0 billion per occurrence, for which PPIC is responsible for a deductible of $3,200,000 and 15% of the balance of a covered loss and the Federal government is responsible for the remaining 85% of a covered loss. We are ultimately responsible for any loss borne by PPIC.

We continue to monitor the state of the insurance market and the scope and costs of coverage for acts of terrorism. However, we cannot anticipate what coverage will be available on commercially reasonable terms in future policy years.

Our debt instruments, consisting of mortgage loans secured by our properties which are non-recourse to us, senior unsecured notes, exchangeable senior debentures, convertible senior debentures and revolving credit agreements contain customary covenants requiring us to maintain insurance. Although we believe that we have adequate insurance coverage for purposes of these agreements, we may not be able to obtain an equivalent amount of coverage at reasonable costs in the future. Further, if lenders insist on greater coverage than we are able to obtain it could adversely affect our ability to finance our properties and expand our portfolio.

Other Commitments and Contingencies

Our mortgage loans are non-recourse to us. However, in certain cases we have provided guarantees or master leased tenant space. These guarantees and master leases terminate either upon the satisfaction of specified circumstances or repayment of the underlying loans. As of March 31, 2012, the aggregate dollar amount of these guarantees and master leases is approximately $269,444,000.

At March 31, 2012, $22,085,000 of letters of credit were outstanding under one of our revolving credit facilities. Our credit facilities contain financial covenants that require us to maintain minimum interest coverage and maximum debt to market capitalization ratios, and provide for higher interest rates in the event of a decline in our ratings below Baa3/BBB. Our credit facilities also contain customary conditions precedent to borrowing, including representations and warranties, and also contain customary events of default that could give rise to accelerated repayment, including such items as failure to pay interest or principal.

Each of our properties has been subjected to varying degrees of environmental assessment at various times. The environmental assessments did not reveal any material environmental contamination. However, there can be no assurance that the identification of new areas of contamination, changes in the extent or known scope of contamination, the discovery of additional sites, or changes in cleanup requirements would not result in significant costs to us.

Two of our wholly owned subsidiaries that are contracted to develop and operate the Cleveland Medical Mart and Convention Center, in Cleveland, Ohio, are required to fund $11,500,000, primarily for tenant improvements, and they are responsible for operating expenses and are entitled to the net operating income, if any, upon the completion of development and the commencement of operations.

As of March 31, 2012, we expect to fund additional capital to certain of our partially owned entities aggregating approximately $288,337,000.

17. Commitments and Contingencies – continued

Litigation

We are from time to time involved in legal actions arising in the ordinary course of business. In our opinion, after consultation with legal counsel, the outcome of such matters, including the matter referred to below, is not expected to have a material adverse effect on our financial position, results of operations or cash flows.

In 2003, Stop & Shop filed an action against us in the New York Supreme Court, claiming that we had no right to reallocate and therefore continue to collect $5,000,000 of annual rent from Stop & Shop pursuant to a Master Agreement and Guaranty, because of the expiration of the leases to which the annual rent was previously allocated. Stop & Shop asserted that an order of the Bankruptcy Court for the Southern District of New York, as modified on appeal by the District Court, froze our right to reallocate and effectively terminated our right to collect the annual rent from Stop & Shop. We asserted a counterclaim seeking a judgment for all the unpaid annual rent accruing through the date of the judgment and a declaration that Stop & Shop will continue to be liable for the annual rent as long as any of the leases subject to the Master Agreement and Guaranty remain in effect. After summary judgment motions by both sides were denied, the parties conducted discovery. A trial was held in November 2010. On November 7, 2011, the Court determined that we have a continuing right to allocate the annual rent to unexpired leases covered by the Master Agreement and Guaranty, and directed entry of a judgment in our favor ordering Stop & Shop to pay us the unpaid annual rent accrued through February 28, 2011 in the amount of $37,422,000, a portion of the annual rent due from March 1, 2011 through the date of judgment, interest, and attorneys' fees. On December 16, 2011, a money judgment based on the Court's decision was entered in our favor in the amount of $56,597,000 (including interest and costs). The amount for attorneys' fees is being addressed in a proceeding before a special referee. Stop & Shop has appealed the Court's decision and the judgment, and has posted a bond to secure payment of the judgment. On January 12, 2012, we commenced a new action against Stop & Shop seeking recovery of $2,500,000 of annual rent not included in the money judgment, plus additional annual rent as it accrues. Stop & Shop has filed a motion to dismiss this action.

As of March 31, 2012, we have a $43,400,000 receivable from Stop & Shop, excluding amounts due to us for interest and costs resulting from the Court's judgment. As a result of Stop & Shop appealing the Court's decision, we believe, after consultation with counsel, that the maximum reasonably possible loss is up to the total amount of the receivable of $43,400,000.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Subparagraph (SX 210.5-02.25)
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+ Details

Related Party Transactions

3 Months Ended

Mar. 31, 2012

18. Related Party Transactions

On March 8, 2012, Steven Roth, the Chairman of our Board of Trustees, repaid his $13,122,500 outstanding loan from the Company.

- Definition

The entire disclosure for related party transactions, including the nature of the relationship(s), a description of the transactions, the amount of the transactions, the effects of any change in the method of establishing the terms of the transaction from the previous period, stated interest rate, expiration date, terms and manner of settlement per the agreement with the related party, and amounts due to or from related parties. If the entity and one or more other entities are under common ownership or management control and this control affects the operating results or financial position, disclosure includes the nature of the control relationship even if there are no transactions between the entities. Disclosure may also include the aggregate amount of current and deferred tax expense for each statement of earnings presented where the entity is a member of a group that files a consolidated tax return, the amount of any tax related balances due to or from affiliates as of the date of each statement of financial position presented, the principal provisions of the method by which the consolidated amount of current and deferred tax expense is allocated to the members of the group and the nature and effect of any changes in that method. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 4
-Section 08
-Paragraph k

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 3A
-Section 04
-Paragraph b

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 57
-Paragraph 1-4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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+ Details

Segment Information

3 Months Ended

Mar. 31, 2012

Segment Reporting [Abstract]

Segment Information

19. Segment Information

Effective January 1, 2012, as a result of certain organizational and operational changes, we redefined the New York business segment to encompass all of our Manhattan assets by including the 1.0 million square feet in 21 freestanding Manhattan street retail assets (formerly in our Retail segment), and the Hotel Pennsylvania and our interest in Alexander's, Inc. (formerly in our Other segment). Accordingly, we have reclassified the prior period segment financial results to conform to the current year presentation. See note (3) on page 34 for the elements of the New York segment's EBITDA.

Below is a summary of net income and a reconciliation of net income to EBITDA(1) by segment for the three months ended March 31, 2012 and 2011.


(Amounts in thousands)			For the Three Months Ended March 31, 2012
											Retail		Merchandise
				Total		New York			Washington, DC		Properties		Mart		Toys		Other
Property rentals				$	521,792	$	233,936		$	129,607	$	79,914	$	56,086	$	-	$	22,249
Straight-line rent adjustments					21,808		17,129			1,814		2,029		476		-		360
Amortization of acquired below-
	market leases, net				13,813		7,695			523		4,230		(3)		-		1,368
Total rentals					557,413		258,760			131,944		86,173		56,559		-		23,977
Tenant expense reimbursements					81,607		36,712			10,384		30,794		2,149		-		1,568
Cleveland Medical Mart development
	project				55,059		-			-		-		55,059		-		-
Fee and other income:
	BMS cleaning fees				15,510		22,647			-		-		-		-		(7,137)
	Management and leasing fees				4,381		907			2,783		664		45		-		(18)
	Lease termination fees				411		23			-		-		388		-		-
	Other				13,085		6,347			5,784		351		706		-		(103)
Total revenues					727,466		325,396			150,895		117,982		114,906		-		18,287
Operating expenses					276,826		145,672			49,003		45,933		33,553		-		2,665
Depreciation and amortization					139,437		53,759			44,153		21,614		9,365		-		10,546
General and administrative					55,890		8,587			6,953		6,333		6,219		-		27,798
Cleveland Medical Mart development
	project				52,761		-			-		-		52,761		-		-
Acquisition related costs and
	tenant buy-outs				685		-			-		-		-		-		685
Total expenses					525,599		208,018			100,109		73,880		101,898		-		41,694
Operating income (loss)					201,867		117,378			50,786		44,102		13,008		-		(23,407)
Income applicable to Toys					116,471		-			-		-		-		116,471		-
Income (loss) from partially owned
	entities				20,033		4,386			(1,870)		576		156		-		16,785
Income from Real Estate Fund					11,762		-			-		-		-		-		11,762
Interest and other investment
	income, net				15,681		1,052			57		14		3		-		14,555
Interest and debt expense					(135,169)		(36,141)			(30,411)		(19,295)		(8,634)		-		(40,688)
Income (loss) before income taxes					230,645		86,675			18,562		25,397		4,533		116,471		(20,993)
Income tax expense					(7,096)		(601)			(490)		-		(1,162)		-		(4,843)
Income (loss) from continuing
	operations				223,549		86,074			18,072		25,397		3,371		116,471		(25,836)
Income (loss) from discontinued operations					56,715		(608)			-		2,519		54,804		-		-
Net income (loss)					280,264		85,466			18,072		27,916		58,175		116,471		(25,836)
Less net (income) loss attributable to
	noncontrolling interests in:
	Consolidated subsidiaries				(9,597)		(2,176)			-		114		-		-		(7,535)
	Operating Partnership, including
		unit distributions			(19,145)		-			-		-		-		-		(19,145)
Net income (loss) attributable to
	Vornado				251,522		83,290			18,072		28,030		58,175		116,471		(52,516)
Interest and debt expense⁽²⁾					193,082		47,058			33,657		20,438		8,790		31,569		51,570
Depreciation and amortization⁽²⁾					191,173		61,911			48,260		22,275		9,478		34,706		14,543
Income tax expense⁽²⁾					51,440		693			523		-		1,162		43,203		5,859
EBITDA⁽¹⁾				$	687,217	$	192,952	⁽³⁾	$	100,512	$	70,743	$	77,605	$	225,949	$	19,456	⁽⁴⁾


See notes on page 34.

19. Segment Information – continued


(Amounts in thousands)			For the Three Months Ended March 31, 2011
											Retail		Merchandise
				Total		New York			Washington, DC		Properties		Mart		Toys		Other
Property rentals				$	532,865	$	233,874		$	138,884	$	79,811	$	57,292	$	-	$	23,004
Straight-line rent adjustments					12,781		10,098			(5)		1,972		(314)		-		1,030
Amortization of acquired below-
	market leases, net				16,606		11,669			466		3,315		17		-		1,139
Total rentals					562,252		255,641			139,345		85,098		56,995		-		25,173
Tenant expense reimbursements					89,669		38,905			9,297		34,003		3,200		-		4,264
Cleveland Medical Mart development
	project				40,699		-			-		-		40,699		-		-
Fee and other income:
	BMS cleaning fees				15,423		22,042			-		-		-		-		(6,619)
	Management and leasing fees				4,106		769			2,885		555		103		-		(206)
	Lease termination fees				1,176		65			1,111		-		-		-		-
	Other				13,558		5,658			5,345		500		2,019		-		36
Total revenues					726,883		323,080			157,983		120,156		103,016		-		22,648
Operating expenses					286,362		143,375			48,836		50,134		38,667		-		5,350
Depreciation and amortization					129,833		54,812			33,684		21,412		9,329		-		10,596
General and administrative					58,946		7,534			6,537		7,212		7,545		-		30,118
Cleveland Medical Mart development
	project				38,278		-			-		-		38,278		-		-
Acquisition related costs and
	tenant buy-outs				18,270		15,000			-		-		3,040		-		230
Total expenses					531,689		220,721			89,057		78,758		96,859		-		46,294
Operating income (loss)					195,194		102,359			68,926		41,398		6,157		-		(23,646)
Income applicable to Toys					112,944		-			-		-		-		112,944		-
Income (loss) from partially owned
	entities				16,284		6,904			(3,915)		221		76		-		12,998
Income from Real Estate Fund					1,080		-			-		-		-		-		1,080
Interest and other investment
	income, net				117,108		1,072			32		8		9		-		115,987
Interest and debt expense					(134,710)		(36,584)			(28,926)		(19,520)		(9,338)		-		(40,342)
Net gain on disposition of wholly
	owned and partially owned assets				6,677		-			-		-		-		-		6,677
Income (loss) before income taxes					314,577		73,751			36,117		22,107		(3,096)		112,944		72,754
Income tax expense					(6,382)		(519)			(738)		(5)		(410)		-		(4,710)
Income (loss) from continuing
	operations				308,195		73,232			35,379		22,102		(3,506)		112,944		68,044
Income from discontinued operations					137,626		123			46,466		6,339		84,698		-		-
Net income					445,821		73,355			81,845		28,441		81,192		112,944		68,044
Less net (income) loss attributable to
	noncontrolling interests in:
	Consolidated subsidiaries				(1,350)		(2,271)			-		155		-		-		766
	Operating Partnership, including
		unit distributions			(31,808)		-			-		-		-		-		(31,808)
Net income attributable to
	Vornado				412,663		71,084			81,845		28,596		81,192		112,944		37,002
Interest and debt expense⁽²⁾					198,848		40,289			32,221		20,670		12,907		40,135		52,626
Depreciation and amortization⁽²⁾					185,848		56,709			41,899		22,375		11,175		34,673		19,017
Income tax expense (benefit)⁽²⁾					66,828		467			848		5		410		69,018		(3,920)
EBITDA⁽¹⁾				$	864,187	$	168,549	⁽³⁾	$	156,813	$	71,646	$	105,684	$	256,770	$	104,725	⁽⁴⁾


See notes on the following page.

19. Segment Information - continued

	Notes to preceding tabular information:

(1)	EBITDA represents "Earnings Before Interest, Taxes, Depreciation and Amortization." We consider EBITDA a supplemental measure for making decisions and assessing the unlevered performance of our segments as it relates to the total return on assets as opposed to the levered return on equity. As properties are bought and sold based on a multiple of EBITDA, we utilize this measure to make investment decisions as well as to compare the performance of our assets to that of our peers. EBITDA should not be considered a substitute for net income. EBITDA may not be comparable to similarly titled measures employed by other companies.

(2)	Interest and debt expense, depreciation and amortization and income tax (benefit) expense in the reconciliation of net income (loss) to EBITDA includes our share of these items from partially owned entities.

(3)	The elements of "New York" EBITDA are summarized below.

				For the Three Months Ended March 31,
	(Amounts in thousands)			2012		2011
	Office and retail^(a)			$	180,137	$	155,365
	Alexander's				13,371		13,281
	Hotel Pennsylvania				(556)		(97)
		Total New York		$	192,952	$	168,549


	(a)		The EBITDA for the three months ended March 31, 2011 is after a $15,000 expense for the buy-out of a below market lease.

(4)	The elements of "other" EBITDA are summarized below.

				For the Three Months Ended March 31,
	(Amounts in thousands)			2012		2011
	Our share of Real Estate Fund:
		Income before net realized/unrealized gains		$	2,118	$	980
		Net unrealized gains			1,711		174
	Total				3,829		1,154
	LNR				15,562		9,390
	555 California Street				10,315		10,965
	Lexington				9,218		10,541
	Other investments				9,300		8,201
					48,224		40,251
	Corporate general and administrative expenses^(a)				(22,317)		(21,355)
	Investment income and other, net^(a)				10,445		13,083
	Fee income from Alexander's				1,889		1,887
	Income from the mark-to-market of J.C. Penney derivative position				1,045		17,163
	Acquisition costs				(685)		(230)
	Mezzanine loans loss reversal and net gain on disposition				-		82,744
	Net gain on sale of condominiums				-		4,586
	Real Estate Fund placement fees				-		(3,048)
	Net gain resulting from Lexington's stock issuance				-		1,452
	Net income attributable to noncontrolling interests in the Operating
		Partnership, including unit distributions			(19,145)		(31,808)
				$	19,456	$	104,725


	(a)		The amounts in these captions (for this table only) exclude the mark-to-market of our deferred compensation plan assets and offsetting liability.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599

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-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 31
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+ Details

Basis Of Presentation (Policy)

3 Months Ended

Mar. 31, 2012

Basis Of Presentation [Abstract]

Basis of Presentation and Recently Issued Accounting Literature Policy [Text Block]

Redeemable Noncontrolling Interests (Policy)

3 Months Ended

Mar. 31, 2012

Redeemable Noncontrolling Interests [Abstract]

Redeemable Noncontrolling Interests Policy [Text Block]

Marketable Securities and Derivative Instruments (Policy)	3 Months Ended
	Mar. 31, 2012
Marketable Securities and Derivative Instruments [Abstract]
Marketable Securities, Available-for-sale Securities, Policy [Policy Text Block]	Our portfolio of marketable securities is comprised of debt and equity securities that are classified as available for sale. Available for sale securities are presented on our consolidated balance sheets at fair value. Gains and losses resulting from the mark-to-market of these securities are included in “other comprehensive income.” Gains and losses are recognized in earnings only upon the sale of the securities and are recorded based on the weighted average cost of such securities. We own 18,584,010 common shares at an average economic cost of $25.75 per share, or $478,532,000 in the aggregate. As of March 31, 2012, these shares have an aggregate fair value of $658,431,000, based on J.C. Penney's closing share price of $35.43 per share. Unrealized gains from the mark-to-market of these shares are included in “other comprehensive income” and were $5,203,000 and $66,903,000 in the three months ended March 31, 2012 and 2011, respectively.
Derivatives, Methods of Accounting, Derivatives Not Designated or Qualifying as Hedges [Policy Text Block]	We also own an economic interest in 4,815,990 common shares through a forward contract executed on October 7, 2010, at a weighted average strike price of $28.86 per share, or $138,986,000 in the aggregate. The contract may be settled, at our election, in cash or common shares, in whole or in part, at any time prior to October 9, 2012. The strike price per share increases at an annual rate of LIBOR plus 80 basis points. The contract is a derivative instrument that does not qualify for hedge accounting treatment. Mark-to-market adjustments on the underlying common shares are recognized in “interest and other investment income, net” on our consolidated statements of income. In the three months ended March 31, 2012 and 2011, we recognized gains of $1,045,000 and $17,163,000, respectively, from the mark-to-market of the underlying common shares.

- Definition

Disclosure of accounting policy for investments in debt and equity securities that are classified as available-for-sale. This policy also may describe the entity's accounting treatment for transfers between investment categories, how the entity determines whether impairments of available-for-sale securities are other than temporary, and how the fair values of such securities are determined.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section M

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 10, 11
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 2, 12
-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS115-1/124-1
-Paragraph 7, 8, 9, 13, 14, 15, 16, 17
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 12, 13, 14, 15, 16
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2196929

+ Details

Fair Value Measurement (Policy)

3 Months Ended

Mar. 31, 2012

Fair Value Disclosures [Abstract]

Fair Value Measurement Policy [Policy Text Block]

Financial Assets and Liabilities Measured at Fair Value

In determining fair value, we utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible, as well as consider counterparty credit risk in our assessment of fair value. Considerable judgment is necessary to interpret Level 2 and 3 inputs in determining the fair value of our financial and non-financial assets and liabilities. Accordingly, our fair value estimates, which are made at the end of each reporting period, may be different than the amounts that may ultimately be realized upon sale or disposition of these assets.

Financial Assets and Liabilities not Measured at Fair Value

Vornado Capital Partners Real Estate Fund (the "Fund") (Tables)

3 Months Ended

Mar. 31, 2012

Vornado Capital Partners Real Estate Fund [Abstract]

Schedule Of Income And Loss From The Fund Text Block

		For the Three Months
(Amounts in thousands)		Ended March 31,
		2012		2011
Operating income		$	4,918	$	1,080
Net unrealized gains			6,844		-
Income from Real Estate Fund			11,762		1,080
Less (income) loss attributable to noncontrolling interests			(7,933)		74
Income from Real Estate Fund attributable to Vornado ⁽¹⁾		$	3,829	$	1,154

___________________________________
___________________________________
(1)	Excludes $541 and $579 of management, leasing and development fees in the three months ended March 31, 2012 and 2011, respectively, which are included as a component of "fee and other income" on our consolidated statements of income.

Marketable Securities and Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2012

Marketable Securities and Derivative Instruments Tables [Abstract]

Schedule of Marketable Securities and Derivative Instruments

		As of March 31, 2012							As of December 31, 2011
					GAAP		Unrealized					GAAP		Unrealized
		Maturity	Fair Value		Cost		Gain		Maturity	Fair Value		Cost		Gain
Equity securities:
	J.C. Penney	n/a	$	658,431	$	591,069	$	67,362	n/a	$	653,228	$	591,069	$	62,159
	Other	n/a		36,503		13,561		22,942	n/a		29,544		13,561		15,983
Debt securities		04/13 - 10/18		59,576		55,460		4,116	04/13 - 10/18		58,549		54,965		3,584
			$	754,510	$	660,090	$	94,420		$	741,321	$	659,595	$	81,726

- Definition

Tabular disclosure of investments in certain debt and equity securities (and certain other trading assets) which include all debt and equity securities (other than those equity securities accounted for under the equity or cost methods of accounting) with readily determinable fair values. Other trading assets include assets that are carried on the balance sheet at fair value and held for trading purposes. A debt security represents a creditor relationship with an enterprise that is in the form of a security. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities (and other trading assets).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 3, 19, 20, 21, 22, 137
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6509901
-Topic 320

Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Glossary Equity Security
-URI http://asc.fasb.org/extlink&oid=6511694
-Topic 320

+ Details

Investments in Partially Owned Entities (Tables)

3 Months Ended

Mar. 31, 2012

Schedule Of Equity Method Investments [Line Items]

Equity Method Investments

			Percentage		Balance as of
(Amounts in thousands)			Ownership at		March 31,		December 31,
Investments:			March 31, 2012		2012		2011
Toys				32.7%	$	597,860	$	506,809

Alexander’s				32.4%	$	189,142	$	189,775

Lexington				11.9%⁽¹⁾		56,106		57,402

LNR				26.2%		187,251		174,408

India real estate ventures				4.0%-36.5%		100,571		80,499

Partially owned office buildings:
	280 Park Avenue			49.5%		182,998		184,516
	Rosslyn Plaza			43.7%-50.4%		62,562		53,333
	West 57th Street properties			50.0%		58,841		58,529
	One Park Avenue			30.3%		47,899		47,568
	666 Fifth Avenue Office Condominium			49.5%		31,769		23,655
	330 Madison Avenue			25.0%		22,238		20,353
	1101 17th Street			55.0%		21,056		20,407
	Fairfax Square			20.0%		6,199		6,343
	Warner Building			55.0%		4,746		2,715
	Other partially owned office buildings			Various		10,991		11,547

Other equity method investments:
	Verde Realty Operating Partnership			8.3%		59,478		59,801
	Independence Plaza			51.0%		50,194		48,511
	Downtown Crossing, Boston			50.0%		46,821		46,691
	Monmouth Mall			50.0%		7,805		7,536
	Other equity method investments⁽²⁾			Various		138,437		140,061
					$	1,285,104	$	1,233,650


(1)		12.0% at December 31, 2011.

(2)		Includes interests in 85 10th Avenue, Farley Project, Suffolk Downs, Dune Capital L.P., Fashion Centre Mall and others.

			Percentage	For the Three Months
(Amounts in thousands)			Ownership	Ended March 31,
Our Share of Net Income (Loss):			March 31, 2012	2012		2011
Toys:			32.7%
	Equity in net income before income taxes			$	157,387	$	179,839
	Income tax expense				(43,203)		(69,018)
	Equity in net income				114,184		110,821
	Management fees				2,287		2,123
				$	116,471	$	112,944

Alexander’s:			32.4%
	Equity in net income			$	6,132	$	5,719
	Management, leasing and development fees				2,262		2,292
					8,394		8,011

Lexington:			11.9%⁽¹⁾
	Equity in net income				930		720
	Net gain resulting from Lexington's stock issuance				-		1,452
					930		2,172

LNR:			26.2%
	Equity in net income				13,250		6,277
	Tax settlement gain				-		8,977
					13,250		15,254

India real estate ventures			4.0%-36.5%		(793)		(207)

Partially owned office buildings:
	Warner Building		55.0%
		Equity in net income			(3,010)		(300)
		Straight-line reserves and write-off of tenant improvements			-		(9,022)
					(3,010)		(9,322)
	280 Park Avenue (acquired in May 2011)		49.5%		(5,595)		-
	666 Fifth Avenue Office Condominium (acquired in December 2011)		49.5%		1,715		-
	330 Madison Avenue		25.0%		794		619
	1101 17th Street		55.0%		683		723
	One Park Avenue (acquired in March 2011)		30.3%		331		(1,228)
	West 57th Street properties		50.0%		313		98
	Rosslyn Plaza		43.7%-50.4%		158		2,415
	Fairfax Square		20.0%		(12)		(13)
	Other partially owned office buildings		Various		527		2,089
					(4,096)		(4,619)

Other equity method investments:
	Independence Plaza (acquired in June 2011)		51.0%		1,682		-
	Monmouth Mall		50.0%		362		131
	Downtown Crossing, Boston		50.0%		(334)		(506)
	Verde Realty Operating Partnership		8.3%		(323)		(1,794)
	Other equity method investments⁽²⁾		Various		961		(2,158)
					2,348		(4,327)

				$	20,033	$	16,284

(1)		12.6% at March 31, 2011.

(2)		Includes interests in 85 10th Avenue, Farley Project, Suffolk Downs, Dune Capital L.P., Fashion Centre Mall and others.

Schedule of debt of partially owned entities

					Interest	100% of
			Percentage		Rate at	Partially Owned Entities’ Debt at
(Amounts in thousands)			Ownership at		March 31,	March 31,		December 31,
			March 31, 2012	Maturity	2012	2012		2011
Toys:			32.7%
	Notes and mortgages payable			2012-2021	7.67%	$	5,110,529	$	6,047,521

Alexander's:			32.4%
	Mortgage notes payable			2013-2018	3.52%	$	1,327,234	$	1,330,932

Lexington:			11.9%⁽¹⁾
	Mortgage notes payable			2012-2037	5.78%	$	1,673,470	$	1,712,750

LNR:			26.2%
	Mortgage notes payable			2013-2031	4.29%	$	392,952	$	353,504
	Liabilities of consolidated CMBS and CDO trusts			n/a	5.35%		78,714,179		127,348,336
						$	79,107,131	$	127,701,840

Partially owned office buildings:
	666 Fifth Avenue Office Condominium mortgage
		note payable	49.5%	02/19	6.76%	$	1,050,235	$	1,035,884
	280 Park Avenue mortgage notes payable		49.5%	06/16	6.65%		737,892		737,678
	Warner Building mortgage note payable		55.0%	05/16	6.26%		292,700		292,700
	One Park Avenue mortgage note payable		30.3%	03/16	5.00%		250,000		250,000
	330 Madison Avenue mortgage note payable		25.0%	06/15	1.74%		150,000		150,000
	Fairfax Square mortgage note payable		20.0%	12/14	7.00%		70,768		70,974
	Rosslyn Plaza mortgage note payable		43.7% to 50.4%	n/a	n/a		-		56,680
	West 57th Street properties mortgage note payable		50.0%	02/14	4.94%		21,225		21,864
	Other		Various	Various	6.38%		70,102		70,230
						$	2,642,922	$	2,686,010

India Real Estate Ventures:
	TCG Urban Infrastructure Holdings mortgage notes
		payable	25.0%	2012-2022	12.61%	$	239,543	$	226,534

Other:
	Verde Realty Operating Partnership mortgage notes
		payable	8.3%	2013-2025	6.21%	$	311,112	$	340,378
	Monmouth Mall mortgage note payable		50.0%	09/15	5.44%		161,589		162,153
	Other⁽²⁾		Various	Various	4.88%		975,154		992,872
						$	1,447,855	$	1,495,403


(1)		12.0% at December 31, 2011.

(2)		Includes interests in Suffolk Downs, Fashion Centre Mall and others.

Toys R Us [Member]

Schedule Of Equity Method Investments [Line Items]

Equity Method Investment Summarized Financial Information Table [Text Block]

(Amounts in thousands)		Balance as of
Balance Sheet:		January 28, 2012		October 29, 2011
	Assets	$	11,890,000	$	13,221,000
	Liabilities		9,894,000		11,530,000
	Noncontrolling interests		29,000		-
	Toys “R” Us, Inc. equity		1,967,000		1,691,000

		For the Three Months Ended
Income Statement:		January 28, 2012		January 29, 2011
	Total revenues	$	5,925,000	$	5,972,000
	Net income attributable to Toys		349,000		339,000

Alexander's Inc. [Member]

Schedule Of Equity Method Investments [Line Items]

Equity Method Investment Summarized Financial Information Table [Text Block]

(Amounts in thousands)		Balance as of
Balance Sheet:		March 31, 2012		December 31, 2011
	Assets	$	1,773,000	$	1,771,000
	Liabilities		1,410,000		1,408,000
	Noncontrolling interests		4,000		4,000
	Stockholders' equity		359,000		359,000

		For the Three Months Ended
Income Statement:		March 31, 2012		March 31, 2011
	Total revenues	$	64,000	$	63,000
	Net income attributable to Alexander’s		19,000		18,000

Lexington Realty Trust [Member]

Schedule Of Equity Method Investments [Line Items]

Equity Method Investment Summarized Financial Information Table [Text Block]

(Amounts in thousands)		Balance as of
Balance Sheet:		December 31, 2011		September 30, 2011
	Assets	$	3,078,000	$	3,164,000
	Liabilities		1,857,000		1,888,000
	Noncontrolling interests		58,000		59,000
	Shareholders’ equity		1,163,000		1,217,000

		For the Three Months Ended
Income Statement:		December 31, 2011		December 31, 2010
	Total revenues	$	83,000	$	86,000
	Net income attributable to Lexington		13,000		12,000

LNR [Member]

Schedule Of Equity Method Investments [Line Items]

Equity Method Investment Summarized Financial Information Table [Text Block]

(Amounts in thousands)		Balance as of
Balance Sheet:		December 31, 2011		September 30, 2011
	Assets	$	79,951,000	$	128,536,000
	Liabilities		79,214,000		127,809,000
	Noncontrolling interests		16,000		55,000
	LNR Property Corporation equity		721,000		672,000

		For the Three Months Ended
Income Statement:		December 31, 2011		December 31, 2010
	Total revenues	$	49,000	$	36,000
	Net income attributable to LNR		51,000		58,000

Discontinued Operations (Tables)

3 Months Ended

Mar. 31, 2012

Discontinued Operations Tables [Abstract]

Schedule Of Assets And Liabilities And Results Of Operations Related To Discontinued Operations

	Assets Related to				Liabilities Related to
(Amounts in thousands)	Discontinued Operations as of				Discontinued Operations as of
	March 31,		December 31,		March 31,		December 31,
	2012		2011		2012		2011
350 West Mart Center	$	-	$	173,780	$	-	$	6,361
Retail properties		-		77,422		-		7,792
Total	$	-	$	251,202	$	-	$	14,153


					For the Three Months
(Amounts in thousands)					Ended March 31,
					2012		2011
Total revenues					$	1,320	$	16,215
Total expenses						422		13,661
						898		2,554
Net gain on sale of 350 West Mart Center						54,911		-
Net gain on extinguishment of High Point debt						-		83,907
Net gain on sale of 1140 Connecticut Avenue and 1227 25th Street						-		45,862
Net gain on sales of other real estate						906		5,303
Income from discontinued operations					$	56,715	$	137,626

- Definition

Tabular disclosure of disposal groups, which may include the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the classification and carrying value of the assets and liabilities comprising the disposal group, and the segment in which the disposal group was reported. Also may include the amount of adjustments to amounts previously reported in discontinued operations such as resolution of contingencies arising from the disposal transaction or the operations of the component prior to disposal.

+ References + Details

Identified Intangible Assets and Intangible Liabilities (Tables)

3 Months Ended

Mar. 31, 2012

Schedule of Identified Intangible Assets and Intangible Liabilities (Table)

	Balance as of
	March 31,		December 31,
(Amounts in thousands)	2012		2011
Identified intangible assets:
Gross amount	$	666,241	$	679,648
Accumulated amortization		(361,856)		(359,944)
Net	$	304,385	$	319,704
Identified intangible liabilities (included in deferred revenue):
Gross amount	$	837,729	$	841,440
Accumulated amortization		(385,886)		(374,253)
Net	$	451,843	$	467,187

Below Market Leases Net Of Above Market Leases [Member]

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

(Amounts in thousands)
2013	$	44,133
2014		37,504
2015		34,399
2016		31,339
2017		25,819

Other Identified Intangible Assets [Member]

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

(Amounts in thousands)
2013	$	40,162
2014		21,758
2015		16,757
2016		14,156
2017		11,709

Tenant Under Ground Leases [Member]

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

(Amounts in thousands)
2013	$	1,377
2014		1,377
2015		1,377
2016		1,377
2017		1,377

Debt (Tables)

3 Months Ended

Mar. 31, 2012

Debt Disclosure [Abstract]

Schedule of Debt

				Interest
(Amounts in thousands)				Rate at	Balance at
				March 31,	March 31,		December 31,
Notes and mortgages payable:			Maturity (1)	2012	2012		2011
Fixed rate:
	New York:
		350 Park Avenue⁽²⁾	01/17	3.75%	$	300,000	$	430,000
		Two Penn Plaza	03/18	5.13%		425,000		425,000
		1290 Avenue of the Americas	01/13	5.97%		411,661		413,111
		770 Broadway	03/16	5.65%		353,000		353,000
		888 Seventh Avenue	01/16	5.71%		318,554		318,554
		909 Third Avenue	04/15	5.64%		202,218		203,217
		828-850 Madison Avenue Condominium - retail	06/18	5.29%		80,000		80,000
		510 5th Avenue - retail	01/16	5.60%		31,612		31,732

	Washington, DC:
		Skyline Place⁽³⁾	02/17	5.74%		678,000		678,000
		River House Apartments	04/15	5.43%		195,546		195,546
		2121 Crystal Drive	03/23	5.51%		150,000		150,000
		Bowen Building	06/16	6.14%		115,022		115,022
		1215 Clark Street, 200 12th Street and 251 18th Street	01/25	7.09%		107,766		108,423
		West End 25	06/21	4.88%		101,671		101,671
		Universal Buildings	04/14	6.45%		97,003		98,239
		Reston Executive I, II, and III	01/13	5.57%		93,000		93,000
		2011 Crystal Drive	08/17	7.30%		80,256		80,486
		1550 and 1750 Crystal Drive	11/14	7.08%		75,946		76,624
		220 20th Street	02/18	4.61%		74,739		75,037
		1235 Clark Street	07/12	6.75%		51,045		51,309
		2231 Crystal Drive	08/13	7.08%		43,205		43,819
		1225 Clark Street	08/13	7.08%		25,844		26,211
		1750 Pennsylvania Avenue	n/a	n/a		-		44,330

	Retail:
		Cross-collateralized mortgages on 40 strip shopping centers	09/20	4.21%		582,389		585,398
		Montehiedra Town Center	07/16	6.04%		120,000		120,000
		Broadway Mall	07/13	5.30%		87,111		87,750
		North Bergen (Tonnelle Avenue)	01/18	4.59%		75,000		75,000
		Las Catalinas Mall	11/13	6.97%		55,471		55,912
		Other	06/14-05/36	5.12%-7.30%		87,841		95,541

	Merchandise Mart:
		Merchandise Mart	12/16	5.57%		550,000		550,000
		Boston Design Center	09/15	5.02%		67,042		67,350

	Other:
		555 California Street	09/21	5.10%		600,000		600,000
		Borgata Land	02/21	5.14%		60,000		60,000
Total fixed rate notes and mortgages payable				5.44%	$	6,295,942	$	6,489,282
___________________
		See notes on page 21.

					Interest
(Amounts in thousands)					Rate at	Balance at
				Spread over	March 31,	March 31,		December 31,
Notes and mortgages payable:			Maturity (1)	LIBOR	2012	2012		2011
Variable rate:
	New York:
		Eleven Penn Plaza	01/19	L+235	2.59%	$	330,000	$	330,000
		100 West 33rd Street - office & retail⁽⁴⁾	03/17	L+250	2.74%		325,000		232,000
		4 Union Square South - retail	04/14	L+325	3.49%		75,000		75,000
		435 Seventh Avenue ⁽⁵⁾	08/14	L+300⁽⁵⁾	5.00%		51,224		51,353
		866 UN Plaza	05/16	L+125	1.49%		44,978		44,978
	Washington, DC:
		2101 L Street	02/13	L+120	1.44%		148,125		150,000
		River House Apartments	04/18	n/a⁽⁶⁾	1.60%		64,000		64,000
		2200/2300 Clarendon Boulevard	01/15	L+75	0.99%		51,856		53,344
		1730 M and 1150 17th Street	06/14	L+140	1.64%		43,581		43,581
	Retail:
		Green Acres Mall	02/13	L+140	1.65%		308,825		325,045
		Bergen Town Center	03/13	L+150	1.74%		282,312		283,590
		San Jose Strip Center	03/13	L+400	4.25%		110,619		112,476
		Beverly Connection ⁽⁷⁾	09/14	L+425⁽⁷⁾	4.75%		100,000		100,000
		Cross-collateralized mortgages on 40 strip
		shopping centers ⁽⁸⁾	09/20	L+136⁽⁸⁾	2.36%		60,000		60,000
		Other	11/12	L+375	3.99%		19,726		19,876
	Other:
		220 Central Park South	10/13	L+275	2.99%		123,750		123,750
	Total variable rate notes and mortgages payable				2.48%		2,138,996		2,068,993
	Total notes and mortgages payable				4.69%	$	8,434,938	$	8,558,275

Senior unsecured notes:
	Senior unsecured notes due 2015		04/15		4.25%	$	499,503	$	499,462
	Senior unsecured notes due 2039 ⁽⁹⁾		10/39		7.88%		460,000		460,000
	Senior unsecured notes due 2022		01/22		5.00%		398,245		398,199
	Total senior unsecured notes				5.70%	$	1,357,748	$	1,357,661

3.88% exchangeable senior debentures⁽¹⁰⁾			04/12		5.32%	$	499,680	$	497,898

2.85% convertible senior debentures⁽¹⁰⁾			04/12		5.45%	$	10,233	$	10,168

Unsecured revolving credit facilities:
	$1.25 billion unsecured revolving credit facility
		($22,085 reserved for outstanding letters of credit)	06/16	L+135	-	$	-	$	-
	$1.25 billion unsecured revolving credit facility		11/16	L+125	-		-		138,000
	Total unsecured revolving credit facilities				-	$	-	$	138,000
___________________________
	See notes on the following page.

	Notes to preceding tabular information (Amounts in thousands):

	(1)	Represents the extended maturity for certain loans in which we have the unilateral right, ability and intent to extend. In the case of our convertible and exchangeable debt, represents the earliest date holders may require us to repurchase the debentures.

	(2)	On January 9, 2012, we completed a $300,000 refinancing of this property. The five-year fixed rate loan bears interest at 3.75% and amortizes based on a 30-year schedule beginning in the third year. The proceeds of the new loan and $132,000 of existing cash were used to repay the existing loan and closing costs.

	(3)	In the first quarter of 2012, we notified the lender that this property had a 26% vacancy rate, which is expected to increase due to scheduled lease expirations resulting primarily from the effects of the Base Realignment and Closure statute. Based on the projected vacancy and the significant amount of capital required to re-tenant this property, at our request, the mortgage loan was transferred to the special servicer.

	(4)	On March 5, 2012, we completed a $325,000 refinancing of this property. The three-year loan bears interest at LIBOR plus 2.50% and has two one-year extension options. We retained net proceeds of approximately $87,000, after repaying the existing loan and closing costs.

	(5)	LIBOR floor of 2.00%.

	(6)	Interest at the Freddie Mac Reference Note Rate plus 1.53%.

	(7)	LIBOR floor of 0.50%.

	(8)	LIBOR floor of 1.00%.

	(9)	May be redeemed at our option in whole or in part beginning on October 1, 2014, at a price equal to the principal amount plus accrued interest.

	(10)	In April 2012, we redeemed all of the outstanding exchangeable and convertible senior debentures at par, for an aggregate of $510,215 in cash.

Convertible And Exchangeable Senior Debentures, Balance Sheet Schedule

			3.88% Exchangeable				2.85% Convertible
(Amounts in thousands, except per share amounts)			Senior Debentures				Senior Debentures
			March 31,		December 31,		March 31,		December 31,
Balance Sheet:			2012		2011		2012		2011
	Principal amount of debt component		$	499,982	$	499,982	$	10,233	$	10,233
	Unamortized discount			(302)		(2,084)		-		(65)
	Carrying amount of debt component		$	499,680	$	497,898	$	10,233	$	10,168
	Carrying amount of equity component		$	32,301	$	32,301	$	956	$	956
	Effective interest rate			5.32%		5.32%		5.45%		5.45%
	Maturity date (period through which discount is being amortized)			4/15/12				4/1/12
	Conversion price per share, as adjusted		$	86.40			$	155.79
	Number of shares on which the aggregate consideration to be delivered
		delivered upon conversion is determined		-⁽¹⁾				-⁽¹⁾
__________________

(1)		In April 2012, we redeemed all of the outstanding exchangeable and convertible senior debentures at par, for an aggregate of $510,215 in cash.

Disclosures Of Convertible And Exchangeable Senior Debentures Income Statement Schedule

		For the Three Months Ended
(Amounts in thousands)		March 31,
Income Statement:		2012		2011
3.88% Exchangeable Senior Debentures:
	Coupon interest	$	4,844	$	4,844
	Discount amortization – original issue		421		399
	Discount amortization – ASC 470-20 implementation		1,361		1,291
		$	6,626	$	6,534

2.85% Convertible Senior Debentures:
	Coupon interest	$	73	$	73
	Discount amortization – original issue		11		11
	Discount amortization – ASC 470-20 implementation		54		52
		$	138	$	136

3.63% Convertible Senior Debentures:
	Coupon interest	$	-	$	1,623
	Discount amortization – original issue		-		196
	Discount amortization – ASC 470-20 implementation		-		526
		$	-	$	2,345

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

+ Details

Redeemable Noncontrolling Interests (Tables)

3 Months Ended

Mar. 31, 2012

Redeemable Noncontrolling Interests Tables [Abstract]

Summary Of Activity Of Redeemable Noncontrolling Interests

(Amounts in thousands)
Balance at December 31, 2010	$	1,327,974
Net income		31,808
Distributions		(12,702)
Conversion of Class A units into common shares, at redemption value		(27,539)
Adjustments to carry redeemable Class A units at redemption value		42,227
Other, net		4,752
Balance at March 31, 2011	$	1,366,520


Balance at December 31, 2011	$	1,160,677
Net income		19,145
Distributions		(12,236)
Conversion of Class A units into common shares, at redemption value		(13,028)
Adjustments to carry redeemable Class A units at redemption value		96,061
Other, net		280
Balance at March 31, 2012	$	1,250,899

Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2012

Schedule of Fair Values of Financial Assets and Liabilities by Levels Table

			As of March 31, 2012
(Amounts in thousands)			Total		Level 1		Level 2		Level 3
	Marketable securities		$	754,510	$	754,510	$	-	$	-
	Real Estate Fund investments (75% of which is attributable to
		noncontrolling interests)		324,514		-		-		324,514
	Deferred compensation plan assets (included in other assets)			99,810		40,929		-		58,881
	Derivative positions in marketable equity securities
		(included in other assets)		31,645		-		31,645		-
		Total assets	$	1,210,479	$	795,439	$	31,645	$	383,395

	Mandatorily redeemable instruments (included in other liabilities)		$	55,097	$	55,097	$	-	$	-

			As of December 31, 2011
(Amounts in thousands)			Total		Level 1		Level 2		Level 3
	Marketable securities		$	741,321	$	741,321	$	-	$	-
	Real Estate Fund investments (75% of which is attributable to
		noncontrolling interests)		346,650		-		-		346,650
	Deferred compensation plan assets (included in other assets)			95,457		39,236		-		56,221
	Derivative positions in marketable equity securities
		(included in other assets)		30,600		-		30,600		-
		Total assets	$	1,214,028	$	780,557	$	30,600	$	402,871

	Mandatorily redeemable instruments (included in other liabilities)		$	54,865	$	54,865	$	-	$	-

Fair Value Inputs, Assets, Quantitative Information [Table Text Block]

			Weighted Average
			(based on fair
Unobservable Quantitative Input		Range	value of investments)
	Discount rates	12.5% to 23.3%	15.0%
	Terminal capitalization rates	5.5% to 6.8%	5.9%

Schedule Of Carrying Amounts And Fair Values Of Financial Instruments

			As of March 31, 2012				As of December 31, 2011
			Carrying		Fair		Carrying		Fair
(Amounts in thousands)			Amount		Value		Amount		Value
	Mezzanine loans receivable		$	133,143	$	128,000	$	133,948	$	129,000
	Debt:
		Notes and mortgages payable	$	8,434,938	$	8,505,000	$	8,558,275	$	8,686,000
		Senior unsecured notes		1,357,748		1,439,000		1,357,661		1,426,000
		Exchangeable senior debentures		499,680		501,000		497,898		510,000
		Convertible senior debentures		10,233		10,000		10,168		10,000
		Revolving credit facility debt		-		-		138,000		138,000
			$	10,302,599	$	10,455,000	$	10,562,002	$	10,770,000

Real Estate Fund Investments [Member]

Summary of Changes in Level 3 Assets [Table Text Block]

	For the Three Months Ended March 31,
(Amounts in thousands)	2012		2011
Beginning balance	$	346,650	$	144,423
Purchases		-		100,238
Sales		(31,052)		-
Realized and unrealized gains		6,844		698
Other, net		2,072		(14,702)
Ending balance	$	324,514	$	230,657

Deferred Compensation Plan Assets [Member]

Summary of Changes in Level 3 Assets [Table Text Block]

	For the Three Months Ended March 31,
(Amounts in thousands)	2012		2011
Beginning balance	$	56,221	$	47,850
Purchases		3,611		1,286
Sales		(3,395)		-
Realized and unrealized gains		2,392		3,623
Other, net		52		(1,147)
Ending balance	$	58,881	$	51,612

- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income, and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

+ References + Details

- Definition

Tabular disclosure of the fair value measurement of assets and liabilities which includes [financial] instruments measured at fair value that are classified in stockholders' equity. Such assets and liabilities may be measured on a recurring or nonrecurring basis. The disclosures which may be required or desired include: (1) for assets and liabilities measured on a recurring basis, disclosure may include: (a) the fair value measurements at the reporting date; (b) the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3); (c) for fair value measurements using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (i) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (ii) purchases, sales, issuances, and settlements (net); (iii) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs); (d) the amount of the total gains or losses for the period in subparagraph (c) (i) above included in earnings (or changes in net assets) that are attributable to the change in unrealized gains or losses relating to those assets and liabilities still held at the reporting date and a description of where those unrealized gains or losses are reported in the statement of income (or activities); (e) the valuation technique(s) used to measure fair value and a discussion of changes in valuation techniques, if any, during the period and (2) for assets and liabilities that are measured at fair value on a nonrecurring basis (for example, impaired assets) disclosure may include, in addition to (a) above: (a) the reasons for the fair value measurements recorded; (b) the same as (b) above; (c) for fair value measurements using significant unobservable inputs (Level 3), a description of the inputs and the information used to develop the inputs; and (d) the valuation technique(s) used to measure fair value and a discussion of changes, if any, in the valuation technique(s) used to measure similar assets and/or liabilities in prior periods. Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 33
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 6
-Footnote 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19190-110258

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19279-110258

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19296-110258

+ Details

Fee and Other Income (Tables)

3 Months Ended

Mar. 31, 2012

Fee And Other Income Tables [Abstract]

Fee and Other Income (Table)

	For the Three Months
(Amounts in thousands)	Ended March 31,
	2012		2011
BMS cleaning fees	$	15,510	$	15,423
Management and leasing fees		4,381		4,106
Lease termination fees		411		1,176
Other income		13,085		13,558
	$	33,387	$	34,263

Interest and Other Investment Income (Loss), Net (Tables)

3 Months Ended

Mar. 31, 2012

Interest And Other Investment Loss Income Net Tables [Abstract]

Schedule Of Interest And Other Investment Income, Net [Text Block]

		For the Three Months
(Amounts in thousands)		Ended March 31,
		2012		2011
Dividends and interest on marketable securities		$	6,247	$	7,667
Mark-to-market of investments in our deferred compensation plan⁽¹⁾			4,127		4,952
Interest on mezzanine loans			2,851		2,644
Income from the mark-to-market of J.C. Penney derivative position			1,045		17,163
Mezzanine loans loss reversal and net gain on disposition			-		82,744
Other, net			1,411		1,938
		$	15,681	$	117,108
__________________________

(1)	This income is entirely offset by the expense resulting from the mark-to-market of the deferred compensation plan liability, which is included in "general and administrative" expense.

Income Per Share (Tables)

3 Months Ended

Mar. 31, 2012

Income Per Share Tables [Abstract]

Schedule Of Earnings Per Share Basic And Diluted [Text Block]

			For the Three Months
(Amounts in thousands, except per share amounts)			Ended March 31,
			2012		2011
Numerator:
	Income from continuing operations, net of income attributable to noncontrolling interests		$	198,285	$	283,636
	Income from discontinued operations, net of income attributable to noncontrolling interests			53,237		129,027
	Net income attributable to Vornado			251,522		412,663
	Preferred share dividends			(17,787)		(13,448)
	Net income attributable to common shareholders			233,735		399,215
	Earnings allocated to unvested participating securities			(69)		(46)
	Numerator for basic income per share			233,666		399,169
	Impact of assumed conversions:
		Interest on 3.88% exchangeable senior debentures		6,626		6,534
		Convertible preferred share dividends		29		32
	Numerator for diluted income per share		$	240,321	$	405,735

Denominator:
	Denominator for basic income per share – weighted average shares			185,370		183,988
	Effect of dilutive securities⁽¹⁾:
		3.88% exchangeable senior debentures		5,736		5,736
		Employee stock options and restricted share awards		730		1,749
		Convertible preferred shares		50		56
	Denominator for diluted income per share – weighted average shares and assumed conversions			191,886		191,529

INCOME PER COMMON SHARE – BASIC:
	Income from continuing operations, net		$	0.97	$	1.47
	Income from discontinued operations, net			0.29		0.70
	Net income per common share		$	1.26	$	2.17

INCOME PER COMMON SHARE – DILUTED:
	Income from continuing operations, net		$	0.97	$	1.45
	Income from discontinued operations, net			0.28		0.67
	Net income per common share		$	1.25	$	2.12


(1)		The effect of dilutive securities in the three months ended March 31, 2012 and 2011 excludes an aggregate of 12,943 and 12,786 weighted average common share equivalents, respectively, as their effect was anti-dilutive.

Segment Information (Tables)

3 Months Ended

Mar. 31, 2012

Segment Reporting Disclosure of Entitys Reportable Segments [Abstract]

Schedule of Segment Information


(Amounts in thousands)			For the Three Months Ended March 31, 2012
											Retail		Merchandise
				Total		New York			Washington, DC		Properties		Mart		Toys		Other
Property rentals				$	521,792	$	233,936		$	129,607	$	79,914	$	56,086	$	-	$	22,249
Straight-line rent adjustments					21,808		17,129			1,814		2,029		476		-		360
Amortization of acquired below-
	market leases, net				13,813		7,695			523		4,230		(3)		-		1,368
Total rentals					557,413		258,760			131,944		86,173		56,559		-		23,977
Tenant expense reimbursements					81,607		36,712			10,384		30,794		2,149		-		1,568
Cleveland Medical Mart development
	project				55,059		-			-		-		55,059		-		-
Fee and other income:
	BMS cleaning fees				15,510		22,647			-		-		-		-		(7,137)
	Management and leasing fees				4,381		907			2,783		664		45		-		(18)
	Lease termination fees				411		23			-		-		388		-		-
	Other				13,085		6,347			5,784		351		706		-		(103)
Total revenues					727,466		325,396			150,895		117,982		114,906		-		18,287
Operating expenses					276,826		145,672			49,003		45,933		33,553		-		2,665
Depreciation and amortization					139,437		53,759			44,153		21,614		9,365		-		10,546
General and administrative					55,890		8,587			6,953		6,333		6,219		-		27,798
Cleveland Medical Mart development
	project				52,761		-			-		-		52,761		-		-
Acquisition related costs and
	tenant buy-outs				685		-			-		-		-		-		685
Total expenses					525,599		208,018			100,109		73,880		101,898		-		41,694
Operating income (loss)					201,867		117,378			50,786		44,102		13,008		-		(23,407)
Income applicable to Toys					116,471		-			-		-		-		116,471		-
Income (loss) from partially owned
	entities				20,033		4,386			(1,870)		576		156		-		16,785
Income from Real Estate Fund					11,762		-			-		-		-		-		11,762
Interest and other investment
	income, net				15,681		1,052			57		14		3		-		14,555
Interest and debt expense					(135,169)		(36,141)			(30,411)		(19,295)		(8,634)		-		(40,688)
Income (loss) before income taxes					230,645		86,675			18,562		25,397		4,533		116,471		(20,993)
Income tax expense					(7,096)		(601)			(490)		-		(1,162)		-		(4,843)
Income (loss) from continuing
	operations				223,549		86,074			18,072		25,397		3,371		116,471		(25,836)
Income (loss) from discontinued operations					56,715		(608)			-		2,519		54,804		-		-
Net income (loss)					280,264		85,466			18,072		27,916		58,175		116,471		(25,836)
Less net (income) loss attributable to
	noncontrolling interests in:
	Consolidated subsidiaries				(9,597)		(2,176)			-		114		-		-		(7,535)
	Operating Partnership, including
		unit distributions			(19,145)		-			-		-		-		-		(19,145)
Net income (loss) attributable to
	Vornado				251,522		83,290			18,072		28,030		58,175		116,471		(52,516)
Interest and debt expense⁽²⁾					193,082		47,058			33,657		20,438		8,790		31,569		51,570
Depreciation and amortization⁽²⁾					191,173		61,911			48,260		22,275		9,478		34,706		14,543
Income tax expense⁽²⁾					51,440		693			523		-		1,162		43,203		5,859
EBITDA⁽¹⁾				$	687,217	$	192,952	⁽³⁾	$	100,512	$	70,743	$	77,605	$	225,949	$	19,456	⁽⁴⁾


See notes on page 34.


(Amounts in thousands)			For the Three Months Ended March 31, 2011
											Retail		Merchandise
				Total		New York			Washington, DC		Properties		Mart		Toys		Other
Property rentals				$	532,865	$	233,874		$	138,884	$	79,811	$	57,292	$	-	$	23,004
Straight-line rent adjustments					12,781		10,098			(5)		1,972		(314)		-		1,030
Amortization of acquired below-
	market leases, net				16,606		11,669			466		3,315		17		-		1,139
Total rentals					562,252		255,641			139,345		85,098		56,995		-		25,173
Tenant expense reimbursements					89,669		38,905			9,297		34,003		3,200		-		4,264
Cleveland Medical Mart development
	project				40,699		-			-		-		40,699		-		-
Fee and other income:
	BMS cleaning fees				15,423		22,042			-		-		-		-		(6,619)
	Management and leasing fees				4,106		769			2,885		555		103		-		(206)
	Lease termination fees				1,176		65			1,111		-		-		-		-
	Other				13,558		5,658			5,345		500		2,019		-		36
Total revenues					726,883		323,080			157,983		120,156		103,016		-		22,648
Operating expenses					286,362		143,375			48,836		50,134		38,667		-		5,350
Depreciation and amortization					129,833		54,812			33,684		21,412		9,329		-		10,596
General and administrative					58,946		7,534			6,537		7,212		7,545		-		30,118
Cleveland Medical Mart development
	project				38,278		-			-		-		38,278		-		-
Acquisition related costs and
	tenant buy-outs				18,270		15,000			-		-		3,040		-		230
Total expenses					531,689		220,721			89,057		78,758		96,859		-		46,294
Operating income (loss)					195,194		102,359			68,926		41,398		6,157		-		(23,646)
Income applicable to Toys					112,944		-			-		-		-		112,944		-
Income (loss) from partially owned
	entities				16,284		6,904			(3,915)		221		76		-		12,998
Income from Real Estate Fund					1,080		-			-		-		-		-		1,080
Interest and other investment
	income, net				117,108		1,072			32		8		9		-		115,987
Interest and debt expense					(134,710)		(36,584)			(28,926)		(19,520)		(9,338)		-		(40,342)
Net gain on disposition of wholly
	owned and partially owned assets				6,677		-			-		-		-		-		6,677
Income (loss) before income taxes					314,577		73,751			36,117		22,107		(3,096)		112,944		72,754
Income tax expense					(6,382)		(519)			(738)		(5)		(410)		-		(4,710)
Income (loss) from continuing
	operations				308,195		73,232			35,379		22,102		(3,506)		112,944		68,044
Income from discontinued operations					137,626		123			46,466		6,339		84,698		-		-
Net income					445,821		73,355			81,845		28,441		81,192		112,944		68,044
Less net (income) loss attributable to
	noncontrolling interests in:
	Consolidated subsidiaries				(1,350)		(2,271)			-		155		-		-		766
	Operating Partnership, including
		unit distributions			(31,808)		-			-		-		-		-		(31,808)
Net income attributable to
	Vornado				412,663		71,084			81,845		28,596		81,192		112,944		37,002
Interest and debt expense⁽²⁾					198,848		40,289			32,221		20,670		12,907		40,135		52,626
Depreciation and amortization⁽²⁾					185,848		56,709			41,899		22,375		11,175		34,673		19,017
Income tax expense (benefit)⁽²⁾					66,828		467			848		5		410		69,018		(3,920)
EBITDA⁽¹⁾				$	864,187	$	168,549	⁽³⁾	$	156,813	$	71,646	$	105,684	$	256,770	$	104,725	⁽⁴⁾


See notes on the following page.

Details of Other EBITDA (Table)

19. Segment Information - continued

	Notes to preceding tabular information:

(1)	EBITDA represents "Earnings Before Interest, Taxes, Depreciation and Amortization." We consider EBITDA a supplemental measure for making decisions and assessing the unlevered performance of our segments as it relates to the total return on assets as opposed to the levered return on equity. As properties are bought and sold based on a multiple of EBITDA, we utilize this measure to make investment decisions as well as to compare the performance of our assets to that of our peers. EBITDA should not be considered a substitute for net income. EBITDA may not be comparable to similarly titled measures employed by other companies.

(2)	Interest and debt expense, depreciation and amortization and income tax (benefit) expense in the reconciliation of net income (loss) to EBITDA includes our share of these items from partially owned entities.

(3)	The elements of "New York" EBITDA are summarized below.

				For the Three Months Ended March 31,
	(Amounts in thousands)			2012		2011
	Office and retail^(a)			$	180,137	$	155,365
	Alexander's				13,371		13,281
	Hotel Pennsylvania				(556)		(97)
		Total New York		$	192,952	$	168,549


	(a)		The EBITDA for the three months ended March 31, 2011 is after a $15,000 expense for the buy-out of a below market lease.

(4)	The elements of "other" EBITDA are summarized below.

				For the Three Months Ended March 31,
	(Amounts in thousands)			2012		2011
	Our share of Real Estate Fund:
		Income before net realized/unrealized gains		$	2,118	$	980
		Net unrealized gains			1,711		174
	Total				3,829		1,154
	LNR				15,562		9,390
	555 California Street				10,315		10,965
	Lexington				9,218		10,541
	Other investments				9,300		8,201
					48,224		40,251
	Corporate general and administrative expenses^(a)				(22,317)		(21,355)
	Investment income and other, net^(a)				10,445		13,083
	Fee income from Alexander's				1,889		1,887
	Income from the mark-to-market of J.C. Penney derivative position				1,045		17,163
	Acquisition costs				(685)		(230)
	Mezzanine loans loss reversal and net gain on disposition				-		82,744
	Net gain on sale of condominiums				-		4,586
	Real Estate Fund placement fees				-		(3,048)
	Net gain resulting from Lexington's stock issuance				-		1,452
	Net income attributable to noncontrolling interests in the Operating
		Partnership, including unit distributions			(19,145)		(31,808)
				$	19,456	$	104,725


	(a)		The amounts in these captions (for this table only) exclude the mark-to-market of our deferred compensation plan assets and offsetting liability.

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References + Details

Organization (Details)	3 Months Ended
Organization (Details)	Mar. 31, 2012
Organization Details [Abstract]
Common limited partnership interest in Vornado Realty L.P., a Delaware limited partnership ("Operating Partnership")	93.50%

Vornado Capital Partners Real Estate Fund (the "Fund") (Details)	3 Months Ended
	Mar. 31, 2012 USD ($) Investments	Mar. 31, 2011 USD ($)	Dec. 31, 2011 USD ($)	Feb. 28, 2011 USD ($)
Real Estate Fund Nondepreciable Real Estate	$ 324,514,000		$ 346,650,000
Details of Income From Vornado Capital Partners Real Estate Fund [Abstract]
Income from Real Estate Fund	11,762,000	$ 1,080,000
Less (income) loss attributable to noncontrolling interests	(9,597,000)	(1,350,000)
Fee and Other Income	33,387,000	34,263,000
Vornado Realty Trust Excluding Real Estate Fund [Member]
Unfunded Commitments Of Fund	$ 111,419,750
Real Estate Fund [Member]
Capital Commitments For Real Estate Fund				$ 800,000,000
Term of the Fund, years	8 years
Number Of Investments Made By Fund \| Investments	5
Investment period for commitments of the Fund, years	3 years
Real Estate Fund Nondepreciable Real Estate	$ 324,514,000
Excess Of Fair Value Over Cost	18,839,000
Unfunded Commitments Of Fund	445,679,000
Details of Income From Vornado Capital Partners Real Estate Fund [Abstract]
Less (income) loss attributable to noncontrolling interests	(7,933,000)	74,000
Income From Real Estate Fund Attributable To Parent Company	3,829,000	1,154,000
Fee and Other Income	541,000	579,000
Real Estate Fund [Member] \| Operating Income [Member]
Details of Income From Vornado Capital Partners Real Estate Fund [Abstract]
Income from Real Estate Fund	4,918,000	1,080,000
Real Estate Fund [Member] \| Unrealized Gain From Mark To Market [Member]
Details of Income From Vornado Capital Partners Real Estate Fund [Abstract]
Income from Real Estate Fund	$ 6,844,000	$ 0
Vornado Realty Trust [Member]
Capital Commitments For Real Estate Fund				$ 200,000,000

Marketable Securities and Derivative Instruments: Marketable Securities (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Marketable Securities, Total	$ 754,510		$ 741,321
Available For Sale Securities Amortized Cost	660,090		659,595
Aggregate unrealized gains	94,420		81,726
Available-for-sale Securities, Gross Realized Gain (Loss), Disclosures [Abstract]
Available For Sale Securities Gross Realized Gains Losses Sale Proceeds		$ 15,162
Available For Sale Securities Gross Realized Gains		$ 2,091
JC Penney [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Equity Securities	658,431		653,228
Available-for-sale Equity Securities, Amortized Cost Basis	591,069		591,069
Aggregate unrealized gains	67,362		62,159
Other Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Equity Securities	36,503		29,544
Available-for-sale Equity Securities, Amortized Cost Basis	13,561		13,561
Aggregate unrealized gains	22,942		15,983
Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Securities	59,576		58,549
Available-for-sale Debt Securities, Amortized Cost Basis	55,460		54,965
Aggregate unrealized gains	$ 4,116		$ 3,584
Available-for-sale Securities, Debt Maturity, Date Range, Low	04/13		04/13
Available-for-sale Securities, Debt Maturity, Date Range, High	10/18		10/18

Marketable Securities and Derivative Instruments: Derivative Instrument (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Derivative [Line Items]
Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax	$ 12,693	$ 68,039
JC Penney [Member]
Derivative [Line Items]
Investment Owned Balance Shares	23,400,000
Ownership Percentage	11.00%
Closing share price	$ 35.43
Economic Gain	$ 211,544
Economic Cost Per Share	$ 26.39
JC Penney [Member] \| Derivative [Member]
Derivative Instrument That Does Not Qualify For Hedge Accounting [Abstract]
Derivative Number Of Instruments Held	4,815,990
Derivative Inception Date	Oct. 07, 2010
Derivative Maturity Date	Oct. 09, 2012
Derivative Price Risk Option Strike Price	28.86
Notional Amount Of Price Risk Derivatives	$ 138,986
Derivative Basis Spread On Variable Rate	0.80%
Derivative Gain On Derivative	$ 1,045	17,163
JC Penney [Member] \| Available-for-sale Securities [Member]
Derivative [Line Items]
Investment Owned Balance Shares	18,584,010
Acquisiton Price Per Share	$ 25.75
Investment Owned, at Cost	$ 478,532
Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax	5,203	$ 66,903
Investment Owned At Fair Value	$ 658,431

Investments in Partially Owned Entities (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						12 Months Ended
	Mar. 31, 2012	Jan. 28, 2012	Dec. 31, 2011	Mar. 31, 2011	Jan. 29, 2011	Dec. 31, 2010	Dec. 31, 2008	Oct. 29, 2011	Sep. 30, 2011	Oct. 31, 2008
Equity Method Investments And Income From Equity Method Investments [Abstract]
Income (Loss) from Equity Method Investments, Total	$ 136,504			$ 129,228
Other Financial Data For Equity Method Investments [Abstract]
Percentage of annual income earned in the fourth quarter	more than 80%
Toys R Us [Member]
Condensed Financial Information For Equity Method Investments [Abstract]
Assets		$ 11,890,000						$ 13,221,000
Liabilities		9,894,000						11,530,000
Noncontrolling interests		29,000						0
Equity		1,967,000						$ 1,691,000
Total revenue		5,925,000			$ 5,972,000
Net (loss) income attributable to investee		$ 349,000			$ 339,000
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	32.70%
Carrying amount of investments in partially owned entitiies	$ 597,860		$ 506,809
Equity in net income, before income taxes	157,387			179,839
Income tax expense	(43,203)			(69,018)
Equity in net income	114,184			110,821
Management, leasing and development fees	2,287			2,123
Income (Loss) from Equity Method Investments, Total	116,471			112,944
Alexander's Inc. [Member]
Condensed Financial Information For Equity Method Investments [Abstract]
Assets	1,773,000		1,771,000
Liabilities	1,410,000		1,408,000
Noncontrolling interests	4,000		4,000
Equity	359,000		359,000
Total revenue	64,000			63,000
Net (loss) income attributable to investee	$ 19,000			18,000
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	32.40%
Carrying amount of investments in partially owned entitiies	$ 189,142		189,775
Equity in net income	6,132			5,719
Management, leasing and development fees	2,262			2,292
Income (Loss) from Equity Method Investments, Total	$ 8,394			$ 8,011
Other Financial Data For Equity Method Investments [Abstract]
Number of shares owned	1,654,068
Closing share price	$ 393.88
Equity Method Investment Market Value	$ 651,504
Excess of investee's carrying amount over equity in net assets	58,833
Fees owed by related party under management agreements	40,685
Equity Method Investment Fair Value In Excess Of Carrying Amount	$ 462,362
Lexington Realty Trust [Member]
Condensed Financial Information For Equity Method Investments [Abstract]
Assets			3,078,000						$ 3,164,000
Liabilities			1,857,000						1,888,000
Noncontrolling interests			58,000						59,000
Equity			1,163,000						1,217,000
Total revenue			83,000			$ 86,000
Net (loss) income attributable to investee			$ 13,000			12,000
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	11.90%		12.00%	12.60%
Carrying amount of investments in partially owned entitiies	$ 56,106		$ 57,402
Equity in net income	930			$ 720
Gain on stock issuance	0			1,452
Income (Loss) from Equity Method Investments, Total	$ 930			2,172
Other Financial Data For Equity Method Investments [Abstract]
Number of shares owned	18,468,969
Closing share price	$ 8.99
Equity Method Investment Market Value	$ 166,036
Excess of investee's carrying amount over equity in net assets	45,082
Equity Method Investment Fair Value In Excess Of Carrying Amount	$ 109,930
Non-cash impairment charges							$ 107,882
Equity Method Investment Acquisition Of Additional Common Shares										8,000,000
LNR [Member]
Condensed Financial Information For Equity Method Investments [Abstract]
Assets			79,951,000						128,536,000
Liabilities			79,214,000						127,809,000
Noncontrolling interests			16,000						55,000
Equity			721,000						$ 672,000
Total revenue			49,000			36,000
Net (loss) income attributable to investee			51,000			$ 58,000
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	26.20%
Carrying amount of investments in partially owned entitiies	$ 187,251		174,408
Equity in net income	13,250			6,277
Gain Loss On Tax Settlement	0			8,977
Income (Loss) from Equity Method Investments, Total	13,250			15,254
India real estate ventures [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Carrying amount of investments in partially owned entitiies	100,571		80,499
Equity in net income	$ (793)			(207)
India real estate ventures [Member] \| Range Minimum
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	4.00%
India real estate ventures [Member] \| Range Maximum
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	36.50%
Partially owned office buildings [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Income (Loss) from Equity Method Investments, Total	$ (4,096)			(4,619)
Partially owned office buildings [Member] \| 280 Park Avenue [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	49.50%
Carrying amount of investments in partially owned entitiies	$ 182,998		184,516
Income (Loss) from Equity Method Investments, Total	(5,595)
Partially owned office buildings [Member] \| Rosslyn Plaza [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Carrying amount of investments in partially owned entitiies	62,562		53,333
Income (Loss) from Equity Method Investments, Total	$ 158			2,415
Partially owned office buildings [Member] \| Rosslyn Plaza [Member] \| Range Minimum
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	43.70%
Partially owned office buildings [Member] \| Rosslyn Plaza [Member] \| Range Maximum
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	50.40%
Partially owned office buildings [Member] \| West 57th Street [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	50.00%
Carrying amount of investments in partially owned entitiies	$ 58,841		58,529
Income (Loss) from Equity Method Investments, Total	$ 313			98
Partially owned office buildings [Member] \| One Park Avenue [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	30.30%
Carrying amount of investments in partially owned entitiies	$ 47,899		47,568
Income (Loss) from Equity Method Investments, Total	$ 331			(1,228)
Partially owned office buildings [Member] \| Fifth Avenue 666 [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	49.50%
Carrying amount of investments in partially owned entitiies	$ 31,769		23,655
Income (Loss) from Equity Method Investments, Total	$ 1,715
Partially owned office buildings [Member] \| 330 Madison Avenue [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	25.00%
Carrying amount of investments in partially owned entitiies	$ 22,238		20,353
Income (Loss) from Equity Method Investments, Total	$ 794			619
Partially owned office buildings [Member] \| Washington DC 1101 17th Street [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	55.00%
Carrying amount of investments in partially owned entitiies	$ 21,056		20,407
Income (Loss) from Equity Method Investments, Total	$ 683			723
Partially owned office buildings [Member] \| Fairfax Square [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	20.00%
Carrying amount of investments in partially owned entitiies	$ 6,199		6,343
Income (Loss) from Equity Method Investments, Total	$ (12)			(13)
Partially owned office buildings [Member] \| Warner Building [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	55.00%
Carrying amount of investments in partially owned entitiies	$ 4,746		2,715
Equity in net income	(3,010)			(300)
Straight Line Rent Reserves And Write Off Of Tenant Improvements	0			(9,022)
Income (Loss) from Equity Method Investments, Total	(3,010)			(9,322)
Partially owned office buildings [Member] \| Other partially owned office buildings [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Carrying amount of investments in partially owned entitiies	10,991		11,547
Income (Loss) from Equity Method Investments, Total	527			2,089
Other equity method investments [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Income (Loss) from Equity Method Investments, Total	$ 2,348			(4,327)
Other equity method investments [Member] \| Verde Realty Operating Partnership [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	8.30%
Carrying amount of investments in partially owned entitiies	$ 59,478		59,801
Income (Loss) from Equity Method Investments, Total	$ (323)			(1,794)
Other equity method investments [Member] \| Independence Plaza [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	51.00%
Carrying amount of investments in partially owned entitiies	$ 50,194		48,511
Income (Loss) from Equity Method Investments, Total	$ 1,682
Other equity method investments [Member] \| Downtown Crossing Boston [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	50.00%
Carrying amount of investments in partially owned entitiies	$ 46,821		46,691
Income (Loss) from Equity Method Investments, Total	$ (334)			(506)
Other equity method investments [Member] \| Monmouth Mall [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	50.00%
Carrying amount of investments in partially owned entitiies	$ 7,805		7,536
Income (Loss) from Equity Method Investments, Total	362			131
Other equity method investments [Member] \| Other equity investments [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Carrying amount of investments in partially owned entitiies	138,437		$ 140,061
Income (Loss) from Equity Method Investments, Total	$ 961			$ (2,158)

Investments in Partially Owned Entities - Debt (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity Method Investment Pro Rata Share Debt Of Partially Owned Entities	$ 24,477,803	$ 37,531,298
Equity Method Investment Prorata Share Debt Of Partially Owned Entities Excluding Our Pro Rata Share Of Liabilities Related To Cmbs And Cdo	$ 3,875,154	4,199,145
Toys R Us [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	32.70%
Debt Instrument, Maturity Date Range, Start	2012
Debt Instrument, Maturity Date Range, End	2021
Debt Instrument, Interest Rate at Period End	7.67%
Equity Method Investment Debt Of Partially Owned Entities	$ 5,110,529	6,047,521
Alexander's Inc. [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	32.40%
Debt Instrument, Maturity Date Range, Start	2013
Debt Instrument, Maturity Date Range, End	2018
Debt Instrument, Interest Rate at Period End	3.52%
Equity Method Investment Debt Of Partially Owned Entities	$ 1,327,234	$ 1,330,932
Lexington Realty Trust [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	11.90%	12.00%	12.60%
Debt Instrument, Maturity Date Range, Start	2012
Debt Instrument, Maturity Date Range, End	2037
Debt Instrument, Interest Rate at Period End	5.78%
Equity Method Investment Debt Of Partially Owned Entities	$ 1,673,470	$ 1,712,750
LNR [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	26.20%
Equity Method Investment Debt Of Partially Owned Entities	$ 79,107,131	127,701,840
LNR [Member] \| Liabilities Of Consolidated Cmbs And Cdo Trusts [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Debt Instrument, Interest Rate at Period End	5.35%
Equity Method Investment Debt Of Partially Owned Entities	$ 78,714,179	127,348,336
LNR [Member] \| Mortgage notes payable [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Debt Instrument, Maturity Date Range, Start	2013
Debt Instrument, Maturity Date Range, End	2031
Debt Instrument, Interest Rate at Period End	4.29%
Equity Method Investment Debt Of Partially Owned Entities	$ 392,952	353,504
Partially owned office buildings [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity Method Investment Debt Of Partially Owned Entities	$ 2,642,922	2,686,010
Partially owned office buildings [Member] \| Fifth Avenue 666 [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	49.50%
Debt Instrument Maturity Date (String)	02/19
Debt Instrument, Interest Rate at Period End	6.76%
Equity Method Investment Debt Of Partially Owned Entities	$ 1,050,235	1,035,884
Partially owned office buildings [Member] \| 280 Park Avenue [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	49.50%
Debt Instrument Maturity Date (String)	06/16
Debt Instrument, Interest Rate at Period End	6.65%
Equity Method Investment Debt Of Partially Owned Entities	$ 737,892	737,678
Partially owned office buildings [Member] \| Warner Building [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	55.00%
Debt Instrument Maturity Date (String)	05/16
Debt Instrument, Interest Rate at Period End	6.26%
Equity Method Investment Debt Of Partially Owned Entities	$ 292,700	292,700
Partially owned office buildings [Member] \| One Park Avenue [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	30.30%
Debt Instrument Maturity Date (String)	03/16
Debt Instrument, Interest Rate at Period End	5.00%
Equity Method Investment Debt Of Partially Owned Entities	$ 250,000	250,000
Partially owned office buildings [Member] \| 330 Madison Avenue [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	25.00%
Debt Instrument Maturity Date (String)	06/15
Debt Instrument, Interest Rate at Period End	1.74%
Equity Method Investment Debt Of Partially Owned Entities	$ 150,000	150,000
Partially owned office buildings [Member] \| Fairfax Square [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	20.00%
Debt Instrument Maturity Date (String)	12/14
Debt Instrument, Interest Rate at Period End	7.00%
Equity Method Investment Debt Of Partially Owned Entities	$ 70,768	70,974
Partially owned office buildings [Member] \| Rosslyn Plaza [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity Method Investment Debt Of Partially Owned Entities	$ 0	56,680
Partially owned office buildings [Member] \| Rosslyn Plaza [Member] \| Range Minimum
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	43.70%
Partially owned office buildings [Member] \| Rosslyn Plaza [Member] \| Range Maximum
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	50.40%
Partially owned office buildings [Member] \| West 57th Street [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	50.00%
Debt Instrument Maturity Date (String)	02/14
Debt Instrument, Interest Rate at Period End	4.94%
Equity Method Investment Debt Of Partially Owned Entities	$ 21,225	21,864
Partially owned office buildings [Member] \| Other partially owned office buildings [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Debt Instrument, Interest Rate at Period End	6.38%
Equity Method Investment Debt Of Partially Owned Entities	$ 70,102	70,230
India real estate ventures [Member] \| Range Minimum
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	4.00%
India real estate ventures [Member] \| Range Maximum
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	36.50%
India real estate ventures [Member] \| Tcg Urban Infrastructure Holdings [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Debt Instrument, Maturity Date Range, Start	2012
Debt Instrument, Maturity Date Range, End	2022
Debt Instrument, Interest Rate at Period End	12.61%
Equity Method Investment Debt Of Partially Owned Entities	$ 239,543	226,534
Other equity method investments [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity Method Investment Debt Of Partially Owned Entities	$ 1,447,855	1,495,403
Other equity method investments [Member] \| Verde Realty Operating Partnership [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	8.30%
Debt Instrument, Maturity Date Range, Start	2013
Debt Instrument, Maturity Date Range, End	2025
Debt Instrument, Interest Rate at Period End	6.21%
Equity Method Investment Debt Of Partially Owned Entities	$ 311,112	340,378
Other equity method investments [Member] \| Monmouth Mall [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Equity method ownership percentage	50.00%
Debt Instrument Maturity Date (String)	09/15
Debt Instrument, Interest Rate at Period End	5.44%
Equity Method Investment Debt Of Partially Owned Entities	$ 161,589	162,153
Other equity method investments [Member] \| Other Equity Method Investments Other [Member]
Schedule Of Long Term Debt Equity Method Investments [Line Items]
Debt Instrument, Interest Rate at Period End	4.88%
Equity Method Investment Debt Of Partially Owned Entities	$ 975,154	$ 992,872

Mezzanine Loans Receivable (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2012	Dec. 31, 2011
Mezzanine Loan Receivable - Interest Rate	9.53%
Notes receivable, net	$ 133,143	$ 133,948
Mezzanine Loans Receiveable - Maturity Start Date	August 2014
Mezzanine Loans Receiveable - Maturity End Date	May 2016

Discontinued Operations (Details) $ in Thousands		3 Months Ended
Discontinued Operations (Details) $ in Thousands	Jan. 06, 2012 USD ($) sqft	Mar. 31, 2012 USD ($) Properties	Mar. 31, 2011 USD ($)	Dec. 31, 2011 USD ($)
Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract]
Total revenues		$ 1,320	$ 16,215
Total expenses		422	13,661
Income from discontinued operations before gain on sale of real estate		898	2,554
Income (Loss) from Discontinued Operations		56,715	137,626
Disposal Group Including Discontinued Operation Unclassified Balance Sheet Disclosures Abstract
Assets related to discontinued operations		0		$ 251,202
Liabilities related to discontinued operations		0		14,153
High Point Complex [Member]
Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract]
Net gain on extinguishment of debt		0	83,907
Retail Properties [Member]
Disposal Group Including Discontinued Operation Additional Disclosures Abstract
Cash Sale of Real Estate		$ 83,670
Number of Real Estate Properties Sold \| Properties		7
Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract]
Net gains on sale of real estate		$ 906	5,303
Disposal Group Including Discontinued Operation Unclassified Balance Sheet Disclosures Abstract
Assets related to discontinued operations		0		77,422
Liabilities related to discontinued operations		0		7,792
Washington DC 1140 Connecticut Avenue and 1227 Twenty Fifth Street [Member]
Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract]
Net gains on sale of real estate		0	$ 45,862
West Mart 350 [Member]
Disposal Group Including Discontinued Operation Additional Disclosures Abstract
Cash Sale of Real Estate	$ 228,000
Square Footage of Real Estate Property Sold \| sqft	1,200,000
Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract]
Net gains on sale of real estate	$ 54,911	54,911
Disposal Group Including Discontinued Operation Unclassified Balance Sheet Disclosures Abstract
Assets related to discontinued operations		0		173,780
Liabilities related to discontinued operations		$ 0		$ 6,361

Identified Intangible Assets and Intangible Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Finite Lived Intangible Assets [Line Items]
Identified intangible assets (included in other assets): Gross	$ 666,241		$ 679,648
Identified intangible assets (included in other assets): Accumulated amortization	(361,856)		(359,944)
Finite-Lived Intangible Assets, Net, Total	304,385		319,704
Identified intangible liabilities (included in deferred credit): Gross	837,729		841,440
Identified intangible liabilities (included in deferred credit): Accumulated amortization	(385,886)		(374,253)
Identified intangible liabilities (included in deferred credit): Net	451,843		$ 467,187
Below Market Leases Net Of Above Market Leases [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	13,813	$ 16,606
Future Amortization Expense, Year One	44,133
Future Amortization Expense, Year Two	37,504
Future Amortization Expense, Year Three	34,399
Future Amortization Expense, Year Four	31,339
Future Amortization Expense, Year Five	25,819
Other Identified Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	12,366	14,155
Future Amortization Expense, Year One	40,162
Future Amortization Expense, Year Two	21,758
Future Amortization Expense, Year Three	16,757
Future Amortization Expense, Year Four	14,156
Future Amortization Expense, Year Five	11,709
Tenant Under Ground Leases [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	344	$ 344
Future Amortization Expense, Year One	1,377
Future Amortization Expense, Year Two	1,377
Future Amortization Expense, Year Three	1,377
Future Amortization Expense, Year Four	1,377
Future Amortization Expense, Year Five	$ 1,377

Debt (Details) - USD ($) $ in Thousands		3 Months Ended
Debt (Details) - USD ($) $ in Thousands	Mar. 05, 2012	Mar. 31, 2012	Dec. 31, 2011
Notes and mortgages payable		$ 8,434,938	$ 8,558,275
Senior unsecured notes		1,357,748	1,357,661
Exchangeable senior debentures		499,680	497,898
Convertible senior debentures		10,233	10,168
Revolving credit facility debt		$ 0	138,000
Notes And Mortgages Payable Fixed Rate [Member]
Interest Rate, End of Period		5.44%
Notes and mortgages payable		$ 6,295,942	6,489,282
Notes And Mortgages Payable Fixed Rate [Member] \| New York 350 Park Avenue [Member]
Debt Instrument Maturity		01/17
Interest Rate, End of Period		3.75%
Notes and mortgages payable		$ 300,000	430,000
Notes And Mortgages Payable Fixed Rate [Member] \| New York Two Penn Plaza [Member]
Debt Instrument Maturity		03/18
Interest Rate, End of Period		5.13%
Notes and mortgages payable		$ 425,000	425,000
Notes And Mortgages Payable Fixed Rate [Member] \| New York 1290 Avenue Of Americas [Member]
Debt Instrument Maturity		01/13
Interest Rate, End of Period		5.97%
Notes and mortgages payable		$ 411,661	413,111
Notes And Mortgages Payable Fixed Rate [Member] \| New York 770 Broadway [Member]
Debt Instrument Maturity		03/16
Interest Rate, End of Period		5.65%
Notes and mortgages payable		$ 353,000	353,000
Notes And Mortgages Payable Fixed Rate [Member] \| New York 888 Seventh Avenue [Member]
Debt Instrument Maturity		01/16
Interest Rate, End of Period		5.71%
Notes and mortgages payable		$ 318,554	318,554
Notes And Mortgages Payable Fixed Rate [Member] \| New York 909 Third Avenue [Member]
Debt Instrument Maturity		04/15
Interest Rate, End of Period		5.64%
Notes and mortgages payable		$ 202,218	203,217
Notes And Mortgages Payable Fixed Rate [Member] \| New York 828-850 Madison Avenue Condominium Retail [Member]
Debt Instrument Maturity		06/18
Interest Rate, End of Period		5.29%
Notes and mortgages payable		$ 80,000	80,000
Notes And Mortgages Payable Fixed Rate [Member] \| New York 510 5th Avenue Retail [Member]
Debt Instrument Maturity		01/16
Interest Rate, End of Period		5.60%
Notes and mortgages payable		$ 31,612	31,732
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC Skyline Place [Member]
Debt Instrument Maturity		02/17
Interest Rate, End of Period		5.74%
Notes and mortgages payable		$ 678,000	678,000
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC River House Apartments [Member]
Debt Instrument Maturity		04/15
Interest Rate, End of Period		5.43%
Notes and mortgages payable		$ 195,546	195,546
Notes And Mortgages Payable Fixed Rate [Member] \| Washington Dc 2121 Crystal Drive [Member]
Debt Instrument Maturity		03/23
Interest Rate, End of Period		5.51%
Notes and mortgages payable		$ 150,000	150,000
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC Bowen Building [Member]
Debt Instrument Maturity		06/16
Interest Rate, End of Period		6.14%
Notes and mortgages payable		$ 115,022	115,022
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC 1215 Clark Street, 200 12th Street And 251 18th Street [Member]
Debt Instrument Maturity		01/25
Interest Rate, End of Period		7.09%
Notes and mortgages payable		$ 107,766	108,423
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC West End 25 [Member]
Debt Instrument Maturity		06/21
Interest Rate, End of Period		4.88%
Notes and mortgages payable		$ 101,671	101,671
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC Universal Buildings [Member]
Debt Instrument Maturity		04/14
Interest Rate, End of Period		6.45%
Notes and mortgages payable		$ 97,003	98,239
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC Reston Executive I, II, And III [Member]
Debt Instrument Maturity		01/13
Interest Rate, End of Period		5.57%
Notes and mortgages payable		$ 93,000	93,000
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC 2011 Crystal Drive [Member]
Debt Instrument Maturity		08/17
Interest Rate, End of Period		7.30%
Notes and mortgages payable		$ 80,256	80,486
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC 1550 And 1750 Crystal Drive [Member]
Debt Instrument Maturity		11/14
Interest Rate, End of Period		7.08%
Notes and mortgages payable		$ 75,946	76,624
Notes And Mortgages Payable Fixed Rate [Member] \| Washington Dc 220 20th Street [Member]
Debt Instrument Maturity		02/18
Interest Rate, End of Period		4.61%
Notes and mortgages payable		$ 74,739	75,037
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC 1235 Clark Street [Member]
Debt Instrument Maturity		07/12
Interest Rate, End of Period		6.75%
Notes and mortgages payable		$ 51,045	51,309
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC 2231 Crystal Drive [Member]
Debt Instrument Maturity		08/13
Interest Rate, End of Period		7.08%
Notes and mortgages payable		$ 43,205	43,819
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC 1225 Clark Street [Member]
Debt Instrument Maturity		08/13
Interest Rate, End of Period		7.08%
Notes and mortgages payable		$ 25,844	26,211
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC 1750 Pennsylvania Avenue [Member]
Notes and mortgages payable		$ 0	44,330
Notes And Mortgages Payable Fixed Rate [Member] \| Retail Cross Collateralized Mortgages On 40 Strip Shopping Centers [Member]
Debt Instrument Maturity		09/20
Interest Rate, End of Period		4.21%
Notes and mortgages payable		$ 582,389	585,398
Notes And Mortgages Payable Fixed Rate [Member] \| Retail Montehiedra Town Center [Member]
Debt Instrument Maturity		07/16
Interest Rate, End of Period		6.04%
Notes and mortgages payable		$ 120,000	120,000
Notes And Mortgages Payable Fixed Rate [Member] \| Retail Broadway Mall [Member]
Debt Instrument Maturity		07/13
Interest Rate, End of Period		5.30%
Notes and mortgages payable		$ 87,111	87,750
Notes And Mortgages Payable Fixed Rate [Member] \| Retail North Bergen Tonnelle Avenue [Member]
Debt Instrument Maturity		01/18
Interest Rate, End of Period		4.59%
Notes and mortgages payable		$ 75,000	75,000
Notes And Mortgages Payable Fixed Rate [Member] \| Retail Las Catalinas Mall [Member]
Debt Instrument Maturity		11/13
Interest Rate, End of Period		6.97%
Notes and mortgages payable		$ 55,471	55,912
Notes And Mortgages Payable Fixed Rate [Member] \| Retail Other [Member]
Maturity, Range, Start		06/14
Maturity, Range, End		05/36
Interest Rate, Range, Minimum		5.12%
Interest Rate, Range, Maximum		7.30%
Notes and mortgages payable		$ 87,841	95,541
Notes And Mortgages Payable Fixed Rate [Member] \| Merchandise Mart Merchandise Mart [Member]
Debt Instrument Maturity		12/16
Interest Rate, End of Period		5.57%
Notes and mortgages payable		$ 550,000	550,000
Notes And Mortgages Payable Fixed Rate [Member] \| Merchandise Mart Boston Design Center [Member]
Debt Instrument Maturity		09/15
Interest Rate, End of Period		5.02%
Notes and mortgages payable		$ 67,042	67,350
Notes And Mortgages Payable Fixed Rate [Member] \| Other 555 California Street [Member]
Debt Instrument Maturity		09/21
Interest Rate, End of Period		5.10%
Notes and mortgages payable		$ 600,000	600,000
Notes And Mortgages Payable Fixed Rate [Member] \| Other Borgata Land [Member]
Debt Instrument Maturity		02/21
Interest Rate, End of Period		5.14%
Notes and mortgages payable		$ 60,000	60,000
Notes And Mortgages Payable Variable Rate [Member]
Interest Rate, End of Period		2.48%
Notes and mortgages payable		$ 2,138,996	2,068,993
Notes And Mortgages Payable Variable Rate [Member] \| New York Eleven Penn Plaza [Member]
Debt Instrument Maturity		01/19
Spread Over LIBOR		2.35%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Interest Rate, End of Period		2.59%
Notes and mortgages payable		$ 330,000	330,000
Notes And Mortgages Payable Variable Rate [Member] \| New York 100 West 33rd Street - Office & Retail [Member]
Debt Instrument Maturity		03/17
Spread Over LIBOR	2.50%	2.50%
Debt Instrument, Description of Variable Rate Basis	LIBOR	LIBOR
Interest Rate, End of Period		2.74%
Notes and mortgages payable		$ 325,000	232,000
Notes And Mortgages Payable Variable Rate [Member] \| New York 4 Union Square South - Retail [Member]
Debt Instrument Maturity		04/14
Spread Over LIBOR		3.25%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Interest Rate, End of Period		3.49%
Notes and mortgages payable		$ 75,000	75,000
Notes And Mortgages Payable Variable Rate [Member] \| New York 435 Seventh Avenue [Member]
Debt Instrument Maturity		08/14
Spread Over LIBOR		3.00%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Interest Rate, End of Period		5.00%
Notes and mortgages payable		$ 51,224	51,353
Notes And Mortgages Payable Variable Rate [Member] \| New York 866 UN Plaza [Member]
Debt Instrument Maturity		05/16
Spread Over LIBOR		1.25%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Interest Rate, End of Period		1.49%
Notes and mortgages payable		$ 44,978	44,978
Notes And Mortgages Payable Variable Rate [Member] \| Washington DC River House Apartments [Member]
Debt Instrument Maturity		04/18
Spread Over LIBOR		1.53%
Debt Instrument, Description of Variable Rate Basis		Freddie Mac
Interest Rate, End of Period		1.60%
Notes and mortgages payable		$ 64,000	64,000
Notes And Mortgages Payable Variable Rate [Member] \| Washington DC 2101 L Street [Member]
Debt Instrument Maturity		02/13
Spread Over LIBOR		1.20%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Interest Rate, End of Period		1.44%
Notes and mortgages payable		$ 148,125	150,000
Notes And Mortgages Payable Variable Rate [Member] \| Washington DC 2200/2300 Clarendon Boulevard [Member]
Debt Instrument Maturity		01/15
Spread Over LIBOR		0.75%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Interest Rate, End of Period		0.99%
Notes and mortgages payable		$ 51,856	53,344
Notes And Mortgages Payable Variable Rate [Member] \| Washington DC 1730 M And 1150 17th Street [Member]
Debt Instrument Maturity		06/14
Spread Over LIBOR		1.40%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Interest Rate, End of Period		1.64%
Notes and mortgages payable		$ 43,581	43,581
Notes And Mortgages Payable Variable Rate [Member] \| Retail Cross Collateralized Mortgages On 40 Strip Shopping Centers [Member]
Debt Instrument Maturity		09/20
Spread Over LIBOR		1.36%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Interest Rate, End of Period		2.36%
Notes and mortgages payable		$ 60,000	60,000
Notes And Mortgages Payable Variable Rate [Member] \| Retail Other [Member]
Debt Instrument Maturity		11/12
Spread Over LIBOR		3.75%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Interest Rate, End of Period		3.99%
Notes and mortgages payable		$ 19,726	19,876
Notes And Mortgages Payable Variable Rate [Member] \| Retail Green Acres Mall [Member]
Debt Instrument Maturity		02/13
Spread Over LIBOR		1.40%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Interest Rate, End of Period		1.65%
Notes and mortgages payable		$ 308,825	325,045
Notes And Mortgages Payable Variable Rate [Member] \| Retail Bergen Town Center [Member]
Debt Instrument Maturity		03/13
Spread Over LIBOR		1.50%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Interest Rate, End of Period		1.74%
Notes and mortgages payable		$ 282,312	283,590
Notes And Mortgages Payable Variable Rate [Member] \| Retail San Jose Strip Centre [Member]
Debt Instrument Maturity		03/13
Spread Over LIBOR		4.00%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Interest Rate, End of Period		4.25%
Notes and mortgages payable		$ 110,619	112,476
Notes And Mortgages Payable Variable Rate [Member] \| Retail Beverly Connection [Member]
Debt Instrument Maturity		09/14
Spread Over LIBOR		4.25%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Interest Rate, End of Period		4.75%
Notes and mortgages payable		$ 100,000	100,000
Notes And Mortgages Payable Variable Rate [Member] \| Other 220 Central Park South [Member]
Debt Instrument Maturity		10/13
Spread Over LIBOR		2.75%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Interest Rate, End of Period		2.99%
Notes and mortgages payable		$ 123,750	123,750
Total Notes And Mortgages Payable [Member]
Interest Rate, End of Period		4.69%
Senior Unsecured Notes [Member]
Interest Rate, End of Period		5.70%
Senior Unsecured Notes [Member] \| Senior Unsecured Notes Due 2015 [Member]
Debt Instrument Maturity		04/15
Interest Rate, End of Period		4.25%
Senior unsecured notes		$ 499,503	499,462
Senior Unsecured Notes [Member] \| Senior Unsecured Notes Due 2039 [Member]
Debt Instrument Maturity		10/39
Interest Rate, End of Period		7.88%
Senior unsecured notes		$ 460,000	460,000
Senior Unsecured Notes [Member] \| Senior Unsecured Notes Due 2022 [Member]
Debt Instrument Maturity		01/22
Interest Rate, End of Period		5.00%
Senior unsecured notes		$ 398,245	398,199
Exchangeable Senior Debentures [Member] \| Exchangeable Senior Debenture 3.88% [Member]
Debt Instrument Maturity		04/12
Interest Rate, End of Period		5.32%
Interest Rate, Stated		3.88%
Convertible Senior Debentures [Member] \| Convertible Senior Debenture 2.85% [Member]
Debt Instrument Maturity		04/12
Interest Rate, End of Period		5.45%
Interest Rate, Stated		2.85%
Unsecured Revolving Credit Facilities [Member] \| Unsecured Revolving Credit Facility $1.25 Billion Maturing 11/16 [Member]
Debt Instrument Maturity		11/16
Spread Over LIBOR		1.25%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Revolving credit facility debt		$ 0	138,000
Line of Credit Facility, Maximum Borrowing Capacity		$ 1,250,000
Unsecured Revolving Credit Facilities [Member] \| Unsecured Revolving Credit Facility $1.25 Billion Maturing 06/16 [Member]
Debt Instrument Maturity		06/16
Spread Over LIBOR		1.35%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Revolving credit facility debt		$ 0	$ 0
Line of Credit Facility, Maximum Borrowing Capacity		1,250,000
Unsecured Revolving Credit Facility Reserved For Outstanding Letters Of Credit		$ 22,085

Debt (Parentheticals) (Details) $ in Thousands			1 Months Ended	3 Months Ended
Debt (Parentheticals) (Details) $ in Thousands	Mar. 05, 2012 USD ($)	Jan. 09, 2012 USD ($)	Apr. 30, 2012 USD ($)	Mar. 31, 2012 USD ($)	Mar. 31, 2011 USD ($)
Repayments of borrowings				$ 884,679	$ 1,197,312
Notes And Mortgages Payable Fixed Rate [Member]
Interest Rate, End of Period				5.44%
Notes And Mortgages Payable Fixed Rate [Member] \| New York 350 Park Avenue [Member]
Interest Rate, End of Period				3.75%
Notes And Loans Payable Refinanced Amount		$ 300,000
Debt Amortization Period		30 years
Debt Term		5 years
Repayments of borrowings		$ 132,000
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC Skyline Place [Member]
Interest Rate, End of Period				5.74%
Vacancy Rate				26.00%
Notes And Mortgages Payable Fixed Rate [Member] \| Washington DC River House Apartments [Member]
Interest Rate, End of Period				5.43%
Notes And Mortgages Payable Fixed Rate [Member] \| Retail Cross Collateralized Mortgages On 40 Strip Shopping Centers [Member]
Interest Rate, End of Period				4.21%
Notes And Mortgages Payable Variable Rate [Member]
Interest Rate, End of Period				2.48%
Notes And Mortgages Payable Variable Rate [Member] \| New York 100 West 33rd Street - Office & Retail [Member]
Interest Rate, End of Period				2.74%
Notes And Loans Payable Refinanced Amount	$ 325,000
Debt Term	3 years
Number Of Extensions Available	2
Length Of Extension Available In Years	1 year
Spread Over LIBOR	2.50%			2.50%
Debt Instrument, Description of Variable Rate Basis	LIBOR			LIBOR
Retained Proceeds From Refinancing	$ 87,000
Notes And Mortgages Payable Variable Rate [Member] \| New York 435 Seventh Avenue [Member]
Interest Rate, End of Period				5.00%
Spread Over LIBOR				3.00%
Debt Instrument, Description of Variable Rate Basis				LIBOR
LIBOR Floor				2.00%
Notes And Mortgages Payable Variable Rate [Member] \| Washington DC River House Apartments [Member]
Interest Rate, End of Period				1.60%
Spread Over LIBOR				1.53%
Debt Instrument, Description of Variable Rate Basis				Freddie Mac
Notes And Mortgages Payable Variable Rate [Member] \| Retail Beverly Connection [Member]
Interest Rate, End of Period				4.75%
Spread Over LIBOR				4.25%
Debt Instrument, Description of Variable Rate Basis				LIBOR
LIBOR Floor				0.50%
Notes And Mortgages Payable Variable Rate [Member] \| Retail Cross Collateralized Mortgages On 40 Strip Shopping Centers [Member]
Interest Rate, End of Period				2.36%
Spread Over LIBOR				1.36%
Debt Instrument, Description of Variable Rate Basis				LIBOR
LIBOR Floor				1.00%
Exchangeable And Convertible Senior Debentures [Member] \| Subsequent Event [Member]
Repayments of Convertible Debt			$ 510,215

Debt (Convertible and Exchangeable) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Convertible Senior Debentures [Member] \| Convertible Senior Debenture 2.85% [Member]
Principal Amount of Debt Component	$ 10,233		$ 10,233
Unamortized discount	0		(65)
Carrying amount of debt component	10,233		10,168
Debt Instrument, Convertible, Carrying Amount of Equity Component	$ 956		$ 956
Debt Instrument, Interest Rate, Effective Percentage	5.45%		5.45%
Debt Instrument Maturity	04/12
Debt Instrument Convertible Conversion Price Per Share	$ 155.79
Coupon Interest Of Debt (Discount) Premium	$ 73	$ 73
Discount Amortization Original Of Debt (Discount) Premium	11	11
Discount Amortization ASC470-20 Of Debt (Discount) Premium	54	52
Amortization of Debt Discount (Premium)	138	136
Convertible Senior Debentures [Member] \| Convertible Senior Debenture 3.63% [Member]
Coupon Interest Of Debt (Discount) Premium	0	1,623
Discount Amortization Original Of Debt (Discount) Premium	0	196
Discount Amortization ASC470-20 Of Debt (Discount) Premium	0	526
Amortization of Debt Discount (Premium)	0	2,345
Exchangeable Senior Debentures [Member] \| Exchangeable Senior Debenture 3.88% [Member]
Principal Amount of Debt Component	499,982		$ 499,982
Unamortized discount	(302)		(2,084)
Carrying amount of debt component	499,680		497,898
Debt Instrument, Convertible, Carrying Amount of Equity Component	$ 32,301		$ 32,301
Debt Instrument, Interest Rate, Effective Percentage	5.32%		5.32%
Debt Instrument Maturity	04/12
Debt Instrument Convertible Conversion Price Per Share	$ 86.40
Coupon Interest Of Debt (Discount) Premium	$ 4,844	4,844
Discount Amortization Original Of Debt (Discount) Premium	421	399
Discount Amortization ASC470-20 Of Debt (Discount) Premium	1,361	1,291
Amortization of Debt Discount (Premium)	$ 6,626	$ 6,534

Redeemable Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Redeemable Noncontrolling Interests Rollforward [Abstract]
Redeemable noncontrolling interests - begining balance	$ 1,160,677	$ 1,327,974
Net income	19,145	31,808
Distributions	(12,236)	(12,702)
Conversion of Class A redeemable units into common shares, at redemption value	(13,028)	(27,539)
Adjustment to carry Class A redeemable units at redemption value	96,061	42,227
Other, net	280	4,752
Redeemable noncontrolling interests - ending balance	1,250,899	$ 1,366,520
Redeemable Noncontrolling Interests Additional Disclosure [Abstract]
Fair value of Series G convertible preferred units and Series D-13 cumulative redeemable preferred units	55,097		$ 54,865
Common Class A [Member]
Redeemable Noncontrolling Interests Additional Disclosure [Abstract]
Temporary Equity, Redemption Value	$ 1,024,899		$ 934,677
Temporary Equity Disclosure [Abstract]
Outstanding Partnership Units held by Third Parties	12,172,197		12,160,771

Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2012	Dec. 31, 2011
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Financial Assets And Liabilities Not Measured At Fair Value By Balance Sheet Grouping [Line Items]
Mezzanine loans receivable	$ 133,143	$ 133,948
Notes and mortgages payable	8,434,938	8,558,275
Senior unsecured notes	1,357,748	1,357,661
Exchangeable senior debentures	499,680	497,898
Convertible senior debentures	10,233	10,168
Revolving credit facility debt	0	138,000
Total Debt	10,302,599	10,562,002
Estimate of Fair Value, Fair Value Disclosure [Member]
Financial Assets And Liabilities Not Measured At Fair Value By Balance Sheet Grouping [Line Items]
Mezzanine loans receivable	128,000	129,000
Notes and mortgages payable	8,505,000	8,686,000
Senior unsecured notes	1,439,000	1,426,000
Exchangeable senior debentures	501,000	510,000
Convertible senior debentures	10,000	10,000
Revolving credit facility debt	0	138,000
Total Debt	$ 10,455,000	$ 10,770,000

Stock-based Compensation (Details) - USD ($)		3 Months Ended
Stock-based Compensation (Details) - USD ($)	Mar. 30, 2012	Mar. 31, 2012	Mar. 31, 2011
Share-based Compensation [Abstract]
Share Based Compensation		$ 6,609,000	$ 7,146,000
Annual Incentive Plan [Abstract]
Maximum Percentage Of Comparable Funds From Operations As Incentive Awards	1.25%
Out Performance Plan [Member]
Out Performance Plan [Abstract]
Out Performance Plan Notional Amount	$ 40,000,000
Awards vesting in three years	33.00%
Awards vesting in four years	33.00%
Awards vesting in five years	34.00%
Share Based Compensation By Share Based Payment Award Grant Date Fair Value Adjusted For Estimated Forfeitures	$ 12,250,000
Share Based Compensation By Share Based Payment Award Amortization Period	5 years
Out Performance Plan [Member] \| Relative Component [Member]
Out Performance Plan [Abstract]
Required Shareholder Return Under Relative Component	6.00%
Out Performance Plan [Member] \| Absolute Component [Member]
Out Performance Plan [Abstract]
Required Shareholder Return Per Year	7.00%
Required Shareholder Return Three Year	21.00%
Percentage Of Shareholder Return Under Which No Awards Will Be Earned	0.00%
Annual Incentive Program [Member]
Annual Incentive Plan [Abstract]
Minimum Comparable Funds From Operations To Prior Year	80.00%

Fee and Other Income (Details) - USD ($) $ in Thousands	3 Months Ended
Fee and Other Income (Details) - USD ($) $ in Thousands	Mar. 31, 2012	Mar. 31, 2011
Fee and Other Income [Abstract]
Tenant cleaning fees	$ 15,510	$ 15,423
Management and leasing fees	4,381	4,106
Lease termination fees	411	1,176
Other income	13,085	13,558
Total Fee and Other Income	33,387	34,263
Management fee income from Interstate Properties	$ 199	$ 197

Interest and Other Investment Income (Loss), Net (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Total Interest and Other Investment Income, Net	$ 15,681	$ 117,108
Marketable Equity Securities Derivative Positions [Member]
Total Interest and Other Investment Income, Net	1,045	17,163
Mezzanine Loans Loss Accrual [Member]
Total Interest and Other Investment Income, Net	0	82,744
Marketable Securities [Member]
Total Interest and Other Investment Income, Net	6,247	7,667
Mark to Market of deferred Compensation Plan [Member]
Total Interest and Other Investment Income, Net	4,127	4,952
Mezzanine Loans Receivable [Member]
Total Interest and Other Investment Income, Net	2,851	2,644
Other Investment Income [Member]
Total Interest and Other Investment Income, Net	$ 1,411	$ 1,938

Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Income Per Share [Abstract]
Income (loss) from continuing operations, net of income attributable to noncontrolling interests	$ 198,285	$ 283,636
Income from discontinued operations, net of income attributable to noncontrolling interests	53,237	129,027
Net income attributable to Vornado	251,522	412,663
Preferred share dividends	(17,787)	(13,448)
NET INCOME attributable to common shareholders	233,735	399,215
Earnings allocated to unvested participating securities	(69)	(46)
Numerator for basic income (loss) per share	233,666	399,169
Interest on 3.875% exchangeable senior debentures	6,626	6,534
Convertible preferred share dividends - Numerator	29	32
Numerator for diluted income (loss) per share	$ 240,321	$ 405,735
Denominator for basic income (loss) per share - weighted average shares	185,370	183,988
3.875% Exchangeable Senior Debentures	5,736	5,736
Employee stock options and restricted share awards	730	1,749
Convertible preferred shares - Denominator	50	56
Weighted Average Number of Shares Outstanding, Diluted, Total	191,886	191,529
Income from continuing operations, net	$ 0.97	$ 1.47
Income from discontinued operations, net - Basic	0.29	0.70
Net income per common share	1.26	2.17
Income (loss) from continuing operations, net - Diluted	0.97	1.45
Income from discontinued operations, net - Diluted	0.28	0.67
Net income per common share	$ 1.25	$ 2.12

Income Per Share (Parentheticals) (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Income Per Share [Abstract]
Weighted average common share equivalents of excluded dilutive securities due to anti-dilutive effect	12,943	12,786

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Commitments and Contingencies (Details) - USD ($)	3 Months Ended
Commitments and Contingencies (Details) - USD ($)	Mar. 31, 2012	Jan. 12, 2012	Dec. 16, 2011	Feb. 28, 2011
Guarantees and master leases	$ 269,444,000
Outstanding letters of credit	22,085,000
Commitment to fund additional capital to partially owned entities	288,337,000
Commitments to Fund Improvements	$ 11,500,000
Loss Contingency, Opinion of Counsel	As a result of Stop & Shop appealing the Court’s decision, we believe, after consultation with counsel, that the maximum reasonably possible loss is up to the total amount of the receivable of $43,400,000.
NBCR Losses [Member]
Federal government deductible, percentage of balance of a covered loss	85.00%
Insurance limit per occurrence	$ 2,000,000,000
Earthquake California Properties [Member]
Vornado deductible, annual aggregate	180,000,000
Insurance limit per occurrence	$ 180,000,000
Vornado deductible, percentage of property value	5.00%
All Risk And Rental Value [Member]
Insurance limit per occurrence	$ 2,000,000,000
General Liability [Member]
Insurance limit per occurrence	300,000,000
PPIC [Member] \| NBCR Losses [Member]
Insurance deductible	$ 3,200,000
Insurance Deductible Percentage Of Balance Of Covered Loss	15.00%
Stop & Shop [Member]
Stop & Shop complaint regarding rent allocated to East Brunswick, Jersey City, Middletown, Union, and Woodbridge leases	$ 5,000,000
Accounts Receivable, Gross	43,400,000
Stop & Shop judgement in our favor to pay us the unpaid annual rent accrued			$ 56,597,000	$ 37,422,000
Stop & Shop recovery action of annual rent commenced by Vornado		$ 2,500,000
Maximum Reasonably Possible Loss	$ 43,400,000

Related Party Transactions (Details) - USD ($)		3 Months Ended
Related Party Transactions (Details) - USD ($)	Mar. 08, 2012	Mar. 31, 2012	Mar. 31, 2011
Proceeds from the repayment of loan to officer		$ 13,123,000	$ 0
Board of Directors Chairman [Member]
Proceeds from the repayment of loan to officer	$ 13,122,500
Related Party Transaction, Date	Mar. 08, 2012

Segment Information (Details) $ in Thousands, sqft in Millions	3 Months Ended
	Mar. 31, 2012 USD ($) sqft Properties	Mar. 31, 2011 USD ($)
Property rentals	$ 521,792	$ 532,865
Straight Line Rent Adjustments	21,808	12,781
Amortization of acquired below-market leases, net	13,813	16,606
Total rentals	557,413	562,252
Tenant expense reimbursements	81,607	89,669
Cleveland Medical Mart development project	55,059	40,699
Tenant cleaning fees	15,510	15,423
Management and leasing fees	4,381	4,106
Lease termination fees	411	1,176
Other	13,085	13,558
Total revenues	727,466	726,883
Operating expenses	276,826	286,362
Depreciation and amortization	139,437	129,833
General and administrative	55,890	58,946
Cleveland Medical Mart development project	52,761	38,278
Tenant buy-outs and other acquisition related costs	685	18,270
Total expenses	525,599	531,689
Operating income	201,867	195,194
Income from partially owned entities	136,504	129,228
Income from Real Estate Fund (of which $7,933 and ($74), respectively, are attributable to noncontrolling interests)	11,762	1,080
Interest and other investment (loss) income, net	15,681	117,108
Interest and debt expense (including amortization of deferred financing costs of $5,867 and $4,633, respectively)	(135,169)	(134,710)
Net gain on disposition of wholly owned and partially owned assets	0	6,677
Income loss before income taxes	230,645	314,577
Income tax expense	(7,096)	(6,382)
Income from continuing operations	223,549	308,195
Income from discontinued operations	56,715	137,626
Net income	280,264	445,821
Less (income) loss attributable to noncontrolling interests	(9,597)	(1,350)
Less net income attributable to noncontrolling interests in: Operating Partnership, including unit distributions	(19,145)	(31,808)
Net income (loss) attributable to Vornado	251,522	412,663
Interest and debt expense (2)	193,082	198,848
Depreciation and amortization (2)	191,173	185,848
Income tax expense	51,440	66,828
EBITDA	$ 687,217	864,187
Real Estate Properties Abstract
Square Footage Of Real Estate Property Reclassed \| sqft	1.0
Number Of Real Estate Properties Reclassed \| Properties	21
Toys R Us [Member]
Income from partially owned entities	$ 116,471	112,944
All Equity Method Investees Excluding Toys [Member]
Income from partially owned entities	20,033	16,284
New York Office [Member]
Property rentals	233,936	233,874
Straight Line Rent Adjustments	17,129	10,098
Amortization of acquired below-market leases, net	7,695	11,669
Total rentals	258,760	255,641
Tenant expense reimbursements	36,712	38,905
Cleveland Medical Mart development project	0	0
Tenant cleaning fees	22,647	22,042
Management and leasing fees	907	769
Lease termination fees	23	65
Other	6,347	5,658
Total revenues	325,396	323,080
Operating expenses	145,672	143,375
Depreciation and amortization	53,759	54,812
General and administrative	8,587	7,534
Cleveland Medical Mart development project	0	0
Tenant buy-outs and other acquisition related costs	0	15,000
Total expenses	208,018	220,721
Operating income	117,378	102,359
Income from partially owned entities	4,386	6,904
Interest and other investment (loss) income, net	1,052	1,072
Interest and debt expense (including amortization of deferred financing costs of $5,867 and $4,633, respectively)	(36,141)	(36,584)
Net gain on disposition of wholly owned and partially owned assets		0
Income loss before income taxes	86,675	73,751
Income tax expense	(601)	(519)
Income from continuing operations	86,074	73,232
Income from discontinued operations	(608)	123
Net income	85,466	73,355
Less (income) loss attributable to noncontrolling interests	(2,176)	(2,271)
Less net income attributable to noncontrolling interests in: Operating Partnership, including unit distributions	0	0
Net income (loss) attributable to Vornado	83,290	71,084
Interest and debt expense (2)	47,058	40,289
Depreciation and amortization (2)	61,911	56,709
Income tax expense	693	467
EBITDA	192,952	168,549
New York Office [Member] \| Office properties [Member]
EBITDA	180,137	155,365
New York Office [Member] \| Alexander's [Member]
EBITDA	13,371	13,281
New York Office [Member] \| Hotel Pennsylvania [Member]
EBITDA	(556)	(97)
New York Office [Member] \| Toys R Us [Member]
Income from partially owned entities	0	0
New York Office [Member] \| All Equity Method Investees Excluding Toys [Member]
Income from partially owned entities	4,386	6,904
Washington DC Office [Member]
Property rentals	129,607	138,884
Straight Line Rent Adjustments	1,814	(5)
Amortization of acquired below-market leases, net	523	466
Total rentals	131,944	139,345
Tenant expense reimbursements	10,384	9,297
Cleveland Medical Mart development project		0
Tenant cleaning fees		0
Management and leasing fees	2,783	2,885
Lease termination fees		1,111
Other	5,784	5,345
Total revenues	150,895	157,983
Operating expenses	49,003	48,836
Depreciation and amortization	44,153	33,684
General and administrative	6,953	6,537
Cleveland Medical Mart development project		0
Tenant buy-outs and other acquisition related costs		0
Total expenses	100,109	89,057
Operating income	50,786	68,926
Income from partially owned entities	(1,870)	(3,915)
Interest and other investment (loss) income, net	57	32
Interest and debt expense (including amortization of deferred financing costs of $5,867 and $4,633, respectively)	(30,411)	(28,926)
Net gain on disposition of wholly owned and partially owned assets		0
Income loss before income taxes	18,562	36,117
Income tax expense	(490)	(738)
Income from continuing operations	18,072	35,379
Income from discontinued operations		46,466
Net income	18,072	81,845
Less (income) loss attributable to noncontrolling interests		0
Less net income attributable to noncontrolling interests in: Operating Partnership, including unit distributions		0
Net income (loss) attributable to Vornado	18,072	81,845
Interest and debt expense (2)	33,657	32,221
Depreciation and amortization (2)	48,260	41,899
Income tax expense	523	848
EBITDA	100,512	156,813
Washington DC Office [Member] \| Toys R Us [Member]
Income from partially owned entities		0
Washington DC Office [Member] \| All Equity Method Investees Excluding Toys [Member]
Income from partially owned entities	0	(3,915)
Retail [Member]
Property rentals	79,914	79,811
Straight Line Rent Adjustments	2,029	1,972
Amortization of acquired below-market leases, net	4,230	3,315
Total rentals	86,173	85,098
Tenant expense reimbursements	30,794	34,003
Cleveland Medical Mart development project		0
Tenant cleaning fees		0
Management and leasing fees	664	555
Lease termination fees		0
Other	351	500
Total revenues	117,982	120,156
Operating expenses	45,933	50,134
Depreciation and amortization	21,614	21,412
General and administrative	6,333	7,212
Cleveland Medical Mart development project		0
Tenant buy-outs and other acquisition related costs		0
Total expenses	73,880	78,758
Operating income	44,102	41,398
Income from partially owned entities	576	221
Interest and other investment (loss) income, net	14	8
Interest and debt expense (including amortization of deferred financing costs of $5,867 and $4,633, respectively)	(19,295)	(19,520)
Net gain on disposition of wholly owned and partially owned assets		0
Income loss before income taxes	25,397	22,107
Income tax expense		(5)
Income from continuing operations	25,397	22,102
Income from discontinued operations	2,519	6,339
Net income	27,916	28,441
Less (income) loss attributable to noncontrolling interests	114	155
Less net income attributable to noncontrolling interests in: Operating Partnership, including unit distributions		0
Net income (loss) attributable to Vornado	28,030	28,596
Interest and debt expense (2)	20,438	20,670
Depreciation and amortization (2)	22,275	22,375
Income tax expense	0	5
EBITDA	70,743	71,646
Retail [Member] \| Toys R Us [Member]
Income from partially owned entities		0
Retail [Member] \| All Equity Method Investees Excluding Toys [Member]
Income from partially owned entities	0	221
Merchandise Mart [Member]
Property rentals	56,086	57,292
Straight Line Rent Adjustments	476	(314)
Amortization of acquired below-market leases, net	(3)	17
Total rentals	56,559	56,995
Tenant expense reimbursements	2,149	3,200
Cleveland Medical Mart development project	55,059	40,699
Tenant cleaning fees		0
Management and leasing fees	45	103
Lease termination fees	388	0
Other	706	2,019
Total revenues	114,906	103,016
Operating expenses	33,553	38,667
Depreciation and amortization	9,365	9,329
General and administrative	6,219	7,545
Cleveland Medical Mart development project	52,761	38,278
Tenant buy-outs and other acquisition related costs		3,040
Total expenses	101,898	96,859
Operating income	13,008	6,157
Income from partially owned entities	156	76
Interest and other investment (loss) income, net	3	9
Interest and debt expense (including amortization of deferred financing costs of $5,867 and $4,633, respectively)	(8,634)	(9,338)
Net gain on disposition of wholly owned and partially owned assets		0
Income loss before income taxes	4,533	(3,096)
Income tax expense	(1,162)	(410)
Income from continuing operations	3,371	(3,506)
Income from discontinued operations	54,804	84,698
Net income	58,175	81,192
Less (income) loss attributable to noncontrolling interests		0
Less net income attributable to noncontrolling interests in: Operating Partnership, including unit distributions		0
Net income (loss) attributable to Vornado	58,175	81,192
Interest and debt expense (2)	8,790	12,907
Depreciation and amortization (2)	9,478	11,175
Income tax expense	1,162	410
EBITDA	77,605	105,684
Merchandise Mart [Member] \| Toys R Us [Member]
Income from partially owned entities		0
Merchandise Mart [Member] \| All Equity Method Investees Excluding Toys [Member]
Income from partially owned entities	0	76
Toys R Us Segment [Member]
Operating income	0
Income from partially owned entities	116,471	112,944
Interest and other investment (loss) income, net		0
Interest and debt expense (including amortization of deferred financing costs of $5,867 and $4,633, respectively)		0
Net gain on disposition of wholly owned and partially owned assets		0
Income loss before income taxes	116,471	112,944
Income tax expense	0	0
Income from continuing operations	116,471	112,944
Income from discontinued operations	0	0
Net income	116,471	112,944
Less (income) loss attributable to noncontrolling interests		0
Less net income attributable to noncontrolling interests in: Operating Partnership, including unit distributions		0
Net income (loss) attributable to Vornado	116,471	112,944
Interest and debt expense (2)	31,569	40,135
Depreciation and amortization (2)	34,706	34,673
Income tax expense	43,203	69,018
EBITDA	225,949	256,770
Toys R Us Segment [Member] \| Toys R Us [Member]
Income from partially owned entities	116,471	112,944
Toys R Us Segment [Member] \| All Equity Method Investees Excluding Toys [Member]
Income from partially owned entities	0	0
Other Segment [Member]
Property rentals	22,249	23,004
Straight Line Rent Adjustments	360	1,030
Amortization of acquired below-market leases, net	1,368	1,139
Total rentals	23,977	25,173
Tenant expense reimbursements	1,568	4,264
Cleveland Medical Mart development project		0
Tenant cleaning fees	(7,137)	(6,619)
Management and leasing fees	(18)	(206)
Lease termination fees		0
Other	(103)	36
Total revenues	18,287	22,648
Operating expenses	2,665	5,350
Depreciation and amortization	10,546	10,596
General and administrative	27,798	30,118
Cleveland Medical Mart development project		0
Tenant buy-outs and other acquisition related costs	685	230
Total expenses	41,694	46,294
Operating income	(23,407)	(23,646)
Income from partially owned entities	16,785	12,998
Income from Real Estate Fund (of which $7,933 and ($74), respectively, are attributable to noncontrolling interests)	11,762	1,080
Interest and other investment (loss) income, net	14,555	115,987
Interest and debt expense (including amortization of deferred financing costs of $5,867 and $4,633, respectively)	(40,688)	(40,342)
Net gain on disposition of wholly owned and partially owned assets		6,677
Income loss before income taxes	(20,993)	72,754
Income tax expense	(4,843)	(4,710)
Income from continuing operations	(25,836)	68,044
Income from discontinued operations		0
Net income	(25,836)	68,044
Less (income) loss attributable to noncontrolling interests	(7,535)	766
Less net income attributable to noncontrolling interests in: Operating Partnership, including unit distributions		(31,808)
Net (income) attributable to noncontrolling interests in the Operating Partnership, including unit distributions	(19,145)
Net income (loss) attributable to Vornado	(52,516)	37,002
Interest and debt expense (2)	51,570	52,626
Depreciation and amortization (2)	14,543	19,017
Income tax expense	5,859	(3,920)
EBITDA	19,456	104,725
Other Segment [Member] \| Toys R Us [Member]
Income from partially owned entities		0
Other Segment [Member] \| All Equity Method Investees Excluding Toys [Member]
Income from partially owned entities	$ 0	$ 12,998

Segment Information (Parentheticals) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Earnings Before Interest, Taxes, Depreciation, and Amortization	$ 687,217	$ 864,187
Alexander's Inc. [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	1,889	1,887
California Street 555 [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	10,315	10,965
Lexington Realty Trust [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	9,218	10,541
Lexington Realty Trust [Member] \| Net Gains From Stock Issuances [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	0	1,452
LNR [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	15,562	9,390
Other Investments [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	9,300	8,201
Other EBITDA attributable to identifiable investments [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	48,224	40,251
Corporate General And Administrative Expenses Excluding Mark To Market Of Deferred Compensation Plan Assets And Offsetting Liability [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	(22,317)	(21,355)
Investment Income And Other Excluding Mark To Market Of Deferred Compensation Plan Assets And Offsetting Liability [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	10,445	13,083
Net Income Loss Attributable To Noncontrolling Interest Operating Partnerships And Preferred Unit Holders [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	(19,145)	(31,808)
Income (Loss) from the Mark-to-Market of Derivative Positions in Marketable Equity Securities [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	1,045	17,163
Real estate Fund organization costs [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	0	(3,048)
Mezzanine Loans Receivable [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	0	82,744
Other Segment [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	19,456	104,725
Net gain on sale of condominiums [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	0	4,586
Acquisition related costs
Earnings Before Interest, Taxes, Depreciation, and Amortization	(685)	(230)
Real Estate Fund [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	3,829	1,154
Real Estate Fund [Member] \| Operations [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	2,118	980
Real Estate Fund [Member] \| Unrealized Gain From Mark To Market [Member]
Earnings Before Interest, Taxes, Depreciation, and Amortization	$ 1,711	$ 174

Label	Element	Value
Fair Value, Measurements, Recurring [Member]
Derivative Assets	us-gaap_DerivativeAssets	$ 30,600,000
Derivative Assets	us-gaap_DerivativeAssets	31,645,000
Deferred Compensation Plan Assets	us-gaap_DeferredCompensationPlanAssets	95,457,000
Deferred Compensation Plan Assets	us-gaap_DeferredCompensationPlanAssets	99,810,000
Assets Fair Value Disclosure	us-gaap_AssetsFairValueDisclosure	1,214,028,000
Assets Fair Value Disclosure	us-gaap_AssetsFairValueDisclosure	1,210,479,000
Available For Sale Securities Fair Value Disclosure	us-gaap_AvailableForSaleSecuritiesFairValueDisclosure	741,321,000
Available For Sale Securities Fair Value Disclosure	us-gaap_AvailableForSaleSecuritiesFairValueDisclosure	754,510,000
Real Estate Fund Investments Fair Value Disclosure	vno_RealEstateFundInvestmentsFairValueDisclosure	346,650,000
Real Estate Fund Investments Fair Value Disclosure	vno_RealEstateFundInvestmentsFairValueDisclosure	324,514,000
Mandatorily Redeemable Preferred Stock Fair Value Disclosure	us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure	54,865,000
Mandatorily Redeemable Preferred Stock Fair Value Disclosure	us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure	55,097,000
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Derivative Assets	us-gaap_DerivativeAssets	0
Derivative Assets	us-gaap_DerivativeAssets	0
Deferred Compensation Plan Assets	us-gaap_DeferredCompensationPlanAssets	56,221,000
Deferred Compensation Plan Assets	us-gaap_DeferredCompensationPlanAssets	58,881,000
Assets Fair Value Disclosure	us-gaap_AssetsFairValueDisclosure	402,871,000
Assets Fair Value Disclosure	us-gaap_AssetsFairValueDisclosure	383,395,000
Available For Sale Securities Fair Value Disclosure	us-gaap_AvailableForSaleSecuritiesFairValueDisclosure	0
Available For Sale Securities Fair Value Disclosure	us-gaap_AvailableForSaleSecuritiesFairValueDisclosure	0
Real Estate Fund Investments Fair Value Disclosure	vno_RealEstateFundInvestmentsFairValueDisclosure	346,650,000
Real Estate Fund Investments Fair Value Disclosure	vno_RealEstateFundInvestmentsFairValueDisclosure	324,514,000
Mandatorily Redeemable Preferred Stock Fair Value Disclosure	us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure	0
Mandatorily Redeemable Preferred Stock Fair Value Disclosure	us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure	0
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Derivative Assets	us-gaap_DerivativeAssets	0
Derivative Assets	us-gaap_DerivativeAssets	0
Deferred Compensation Plan Assets	us-gaap_DeferredCompensationPlanAssets	39,236,000
Deferred Compensation Plan Assets	us-gaap_DeferredCompensationPlanAssets	40,929,000
Assets Fair Value Disclosure	us-gaap_AssetsFairValueDisclosure	780,557,000
Assets Fair Value Disclosure	us-gaap_AssetsFairValueDisclosure	795,439,000
Available For Sale Securities Fair Value Disclosure	us-gaap_AvailableForSaleSecuritiesFairValueDisclosure	741,321,000
Available For Sale Securities Fair Value Disclosure	us-gaap_AvailableForSaleSecuritiesFairValueDisclosure	754,510,000
Real Estate Fund Investments Fair Value Disclosure	vno_RealEstateFundInvestmentsFairValueDisclosure	0
Real Estate Fund Investments Fair Value Disclosure	vno_RealEstateFundInvestmentsFairValueDisclosure	0
Mandatorily Redeemable Preferred Stock Fair Value Disclosure	us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure	54,865,000
Mandatorily Redeemable Preferred Stock Fair Value Disclosure	us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure	55,097,000
Fair Value, Measurements, Recurring [Member] \| Fair Value Inputs Level 2 Member
Derivative Assets	us-gaap_DerivativeAssets	30,600,000
Derivative Assets	us-gaap_DerivativeAssets	31,645,000
Deferred Compensation Plan Assets	us-gaap_DeferredCompensationPlanAssets	0
Deferred Compensation Plan Assets	us-gaap_DeferredCompensationPlanAssets	0
Assets Fair Value Disclosure	us-gaap_AssetsFairValueDisclosure	30,600,000
Assets Fair Value Disclosure	us-gaap_AssetsFairValueDisclosure	31,645,000
Available For Sale Securities Fair Value Disclosure	us-gaap_AvailableForSaleSecuritiesFairValueDisclosure	0
Available For Sale Securities Fair Value Disclosure	us-gaap_AvailableForSaleSecuritiesFairValueDisclosure	0
Real Estate Fund Investments Fair Value Disclosure	vno_RealEstateFundInvestmentsFairValueDisclosure	0
Real Estate Fund Investments Fair Value Disclosure	vno_RealEstateFundInvestmentsFairValueDisclosure	0
Mandatorily Redeemable Preferred Stock Fair Value Disclosure	us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure	0
Mandatorily Redeemable Preferred Stock Fair Value Disclosure	us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure	0
Deferred Compensation Plan Asset [Member]
Fair Value Asset Measured On Recurring Basis Asset Sales	vno_FairValueAssetMeasuredOnRecurringBasisAssetSales	3,395,000
Fair Value Asset Measured On Recurring Basis Asset Sales	vno_FairValueAssetMeasuredOnRecurringBasisAssetSales	0
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Other Net	vno_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOtherNet	(52,000)
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Other Net	vno_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOtherNet	$ 1,147,000
Fair Value Measurements, Valuation Processes, Description	vno_FairValueMeasurementsValuationProcessesDescription	Deferred compensation plan assets that are classified as Level 3 consist of investments in limited partnerships and investment funds, which are managed by third parties. We receive quarterly financial reports from a third-party administrator, which are compiled from the quarterly reports provided to them from each limited partnership and investment fund. The quarterly reports provide net asset values on a fair value basis which are audited by independent public accounting firms on an annual basis. The third-party administrator does not adjust these values in determining our share of the net assets and we do not adjust these values when reported in our consolidated financial statements.
Fair Value Asset Measured on Recurring Basis, Asset, Purchases	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	$ 3,611,000
Fair Value Asset Measured on Recurring Basis, Asset, Purchases	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	1,286,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	56,221,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	58,881,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	51,612,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	47,850,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	2,392,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	3,623,000
Real Estate Fund [Member]
Fair Value Asset Measured On Recurring Basis Asset Sales	vno_FairValueAssetMeasuredOnRecurringBasisAssetSales	31,052,000
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Other Net	vno_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOtherNet	(2,072,000)
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Other Net	vno_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOtherNet	$ 14,702,000
Fair Value Measurements, Valuation Processes, Description	vno_FairValueMeasurementsValuationProcessesDescription	We use a discounted cash flow valuation technique to estimate the fair value of each of these investments, which is updated quarterly by personnel responsible for the management of each investment and reviewed by senior management at each reporting period. The discounted cash flow valuation technique requires us to estimate cash flows for each investment over the anticipated holding period, which currently ranges from 2.3 to 6.8 years. Cash flows are derived from property rental revenue (base rents plus reimbursements) less operating expenses, real estate taxes and capital and other costs, plus projected sales proceeds in the year of exit. Property rental revenue is based on leases currently in place and our estimates for future leasing activity, which are based on current market rents for similar space plus a projected growth factor. Similarly, estimated operating expenses and real estate taxes are based on amounts incurred in the current period plus a projected growth factor for future periods. Anticipated sales proceeds at the end of an investment’s expected holding period are determined based on the net cash flow of the investment in the year of exit, divided by a terminal capitalization rate, less estimated selling costs. The fair value of each property is calculated by discounting the future cash flows (including the projected sales proceeds), using an appropriate discount rate and then reduced by the property’s outstanding debt, if any, to determine the fair value of the equity in each investment. Significant unobservable quantitative inputs used in determining the fair value of each investment include capitalization rates and discount rates. These rates are based on the location, type and nature of each property, and current and anticipated market conditions, which are derived from original underwriting assumptions, industry publications and from the experience of our Acquisitions and Capital Markets departments.
Fair Value Asset Measured on Recurring Basis, Asset, Purchases	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	$ 0
Fair Value Asset Measured on Recurring Basis, Asset, Purchases	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	100,238,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	346,650,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	144,423,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	324,514,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	230,657,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	6,844,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	$ 698,000
Real Estate Fund [Member] \| Weighted Average [Member]
Fair Value Inputs, Discount Rate	vno_FairValueInputsDiscountRate	15.00%
Fair Value Inputs, Cap Rate	vno_FairValueInputsCapRate	5.90%
Real Estate Fund [Member] \| Maximum [Member]
Fair Value Inputs, Holding Period	vno_FairValueInputsHoldingPeriod	6 years 9 months 18 days
Fair Value Inputs, Discount Rate	vno_FairValueInputsDiscountRate	23.30%
Fair Value Inputs, Cap Rate	vno_FairValueInputsCapRate	6.80%
Real Estate Fund [Member] \| Minimum [Member]
Fair Value Inputs, Holding Period	vno_FairValueInputsHoldingPeriod	2 years 4 months
Fair Value Inputs, Discount Rate	vno_FairValueInputsDiscountRate	12.50%
Fair Value Inputs, Cap Rate	vno_FairValueInputsCapRate	5.50%