Real Estate Fund Investments [Abstract] Real Estate Fund Investments [Abstract] Lease revenues Lease revenues Operating Lease, Lease Income Related Party Transactions [Abstract] Related Party Transactions [Abstract] Debt, carrying amount Long-Term Debt, Gross Finance lease, right-of-use asset Finance Lease, Right-of-Use Asset, after Accumulated Amortization Percent vested, year four Share Based Compensation, Percent Vested, Year Four Share Based Compensation, Percent Vested, Year Four Shares/Units Outstanding (shares) Beginning balance, shares Ending balance, shares Preferred shares/units of beneficial interest: outstanding shares (shares) Preferred Stock, Shares Outstanding Gross amount Finite Lived Intangible Liability Gross This element represents the identifiable intangible liability established upon acquisition based on an unfavorable difference between the terms of an acquired lease and the current market terms for that lease at the acquisition date. Leasehold improvements and equipment Fixtures and Equipment, Gross Debt Instrument [Axis] Debt Instrument [Axis] 220 Central Park South Condominium Units Ready For Sale Real Estate Held for Development and Sale, Policy [Policy Text Block] Finance lease liability Finance Lease, Liability Dividends paid on common shares / Distributions to Vornado Dividends / Distributions paid on common shares / Class A units Payments of Ordinary Dividends, Common Stock Total Real estate, balance at beginning of period Real estate, balance at end of period Real Estate Investment Property, at Cost Net income (loss) attributable to nonredeemable noncontrolling interests in consolidated subsidiaries Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest Real estate impairment losses Impairment Of Real Estate And Related Write-Offs Impairment Of Real Estate And Related Write-Offs Amortization of below-market leases, net Amortization of Below Market Lease Redeemable noncontrolling interests: Redeemable Noncontrolling Interest, Equity, Carrying Amount [Abstract] Transaction related costs and other Real Estate Acquisition and Related Transaction Cost Acquisition and related transaction cost associate with Real Estate business activities. Debt, fair value Debt Instrument, Fair Value Disclosure Realized and unrealized (losses) gains Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Realized And Unrealized Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Realized And Unrealized Schedule Of Income And Loss From The Fund Schedule Of Income And Loss From The Fund [Table Text Block] The schedule that provides the details of Income and Loss from the Real Estate Fund Gross amount at which carried at close of period SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross [Abstract] 220 Central Park South Real Estate Disclosure [Text Block] Property management fee agreement escalation percentage of income Property Management Fee Agreement Escalation Percentage Of Income Property Management Fee Agreement Escalation Percentage Of Income Additional capital Additional Paid in Capital Equity method investment debt of partially owned entities Equity Method Investment Debt Of Partially Owned Entities Equity Method Investment Debt Of Partially Owned Entities 131-135 West 33rd Street One Three One to One Three Five West Thirty Three [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Financial Instruments [Domain] Financial Instruments [Domain] Alexander's Alexanders Inc [Member] Alexanders Inc 40 East 52nd Street 40 East 52nd Street [Member] 40 East 52nd Street Spread over variable rate (in percentage) Debt Instrument, Basis Spread on Variable Rate Exercised (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Percentage of affiliated entity owned by related parties Percentage Of Affiliated Entity Owned By Related Parties Percentage Of Affiliated Entity Owned By Related Parties Weighted average discount rate (percent) Operating Lease, Weighted Average Discount Rate, Percent Debt instrument, interest rate, stated percentage Debt Instrument, Interest Rate, Stated Percentage Guarantees and master leases Guarantees And Master Leases Guarantees And Master Leases Percentage breakdown of awards Share-based Compensation Arrangement by Share-based Payment Award, Percentage Breakdown Share-based Compensation Arrangement by Share-based Payment Award, Percentage Breakdown Exercise of option to purchase Real Estate Investment, Purchase Option Real Estate Investment, Purchase Option Other non-cash adjustments Other Noncash Income (Expense) Total, net Finite Lived Intangible Liabilities Net The aggregate sum of gross carrying value of a major finite-lived intangible liabilty class, less accumulated amortization. A major class is composed of intangible liabilities that can be grouped together because they are similar, either by their nature or by their use in the operations of a company Real Estate Properties [Domain] Real Estate Properties [Domain] Dividends on preferred shares / Distributions to preferred unitholders (see Note 11 for dividends per share amounts) Dividends on preferred shares / Distributions to preferred unitholders (see Note 11 for dividends per share amounts) Dividends, Preferred Stock Cash payments for income taxes Income Taxes Paid Outstanding Partnership Units held by Third Parties (shares) Units outstanding Temporary Equity, Shares Outstanding Encumbrances SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Amount of Encumbrances Measurement Input Type [Domain] Measurement Input Type [Domain] Antidilutive Securities Excluded From Computation Of Earnings Per Share Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Weighted average common share / class A unit equivalents of excluded dilutive securities due to anti-dilutive effect Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 100 West 33rd Street 100 West 33rd Street [Member] 100 West 33rd Street Interest Costs Capitalized Adjustment Interest Costs Capitalized Adjustment This element represents Capitalized interest and debt expenses amount. Weighted average units outstanding, diluted (in shares) Denominator for diluted income per Class A unit - weighted average units Weighted Average Limited Partnership Units Outstanding, Diluted Capitalized interest Interest Paid, Capitalized, Investing Activities Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Previously recorded unrealized loss on exited investments Net Investment Income Equity Component [Domain] Equity Component [Domain] Nonrecurring Fair Value, Nonrecurring [Member] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Discount rates Measurement Input, Discount Rate [Member] Other Other Property [Member] Ownership [Axis] Ownership [Axis] Senior unsecured notes Senior Unsecured Notes [Member] Senior Unsecured Notes [Member] Investment, Name [Domain] Investment, Name [Domain] Rego Park 2 Property Rego Park 2 Property [Member] Rego Park 2 Property [Member] Related Party [Domain] Related Party [Domain] Fair Value Measurement Fair Value Measurement, Policy [Policy Text Block] 33‑00 Northern Boulevard Mortgage Loan Three Three - Zero Zero Northern Boulevard Mortgage Loan [Member] Three Three - Zero Zero Northern Boulevard Mortgage Loan [Member] Hedging Designation [Domain] Hedging Designation [Domain] Change in deferred tax liability Change in Valuation of Deferred Tax Liabilities Change in Valuation of Deferred Tax Liabilities Supplemental Disclosure of Cash Flow Information: Supplemental Cash Flow Information [Abstract] Forfeited (in usd per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price 339 Greenwich Street Three Three Nine Greenwich [Member] Three Three Nine Greenwich [Member] Deferred revenue Increase In Liabilities Resulting From Consolidation, Deferred Revenue Increase In Liabilities Resulting From Consolidation, Deferred Revenue Unrecognized compensation expense Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Plan Name [Domain] Plan Name [Domain] Unsecured revolving credit facilities Unsecured revolving credit facilities Long-Term Line of Credit Entity Address, State or Province Entity Address, State or Province Benefit (expense) from deferred compensation plan liability Mark-to-market Expense (Benefit) of Investments in Deferred Compensation Plan Mark-to-market Expense (Benefit) of Investments in Deferred Compensation Plan Reclassification of assets held for sale (included in "other assets") Transfer to Investments Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Options outstanding, Weighted Average Remaining Contractual Term Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Award Type [Axis] Award Type [Axis] Redeemable Class A unit measurement adjustment Adjustments to Additional Paid in Capital, Redeemable Stock Unit Measurement Adjustment Adjustments to Additional Paid in Capital, Redeemable Stock Unit Measurement Adjustment Matures in April 2024 Matures in April 2024 [Member] Matures in April 2024 Net (loss) income per Class A unit (in dollars per unit) Net Income (Loss), Net of Tax, Per Outstanding Limited Partnership Unit, Diluted Multiemployer plans contributions represent more than 5% of total employer contributions Multiemployer Plan, Pension, Significant, Employer Contribution Exceeds 5 Percent [true false] Lexington Avenue 731 Lexington Avenue 731 [Member] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Dow Jones U.S. Real Estate Office Index Dow Jones U.S. Real Estate Office Index [Member] Dow Jones U.S. Real Estate Office Index Variable Interest Entity, Not Primary Beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] Number of credit facilities Number of Credit Facilities Number of Credit Facilities Total liabilities Liabilities Liabilities 150 West 34th Street Loan Participation One Five Zero West 34th Street Loan [Member] One Five Zero West 34th Street Loan Weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Earnings per share [Table] Earnings per share [Table] Participating Mortgages Participating Mortgages [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Cash Flows from Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Mortgages payable, net Loans Payable Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Leases [Table] Leases [Table] Leases [Table] Revolving Credit Facility Revolving Credit Facility [Member] Document Type Document Type Commitment to fund additional capital to partially owned entities Commitment To Fund Additional Capital To Partially Owned Entities Commitment To Fund Additional Capital To Partially Owned Entities Weighted- Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Expired (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period 770 Broadway 770 Broadway [Member] 770 Broadway Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Unvested at beginning of period (in usd per share) Unvested at end of period (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Schedule Of Share Based Compensation Restricted Operating Partnership Units Earned Schedule Of Sharebased Compensation Restricted Operating Partnership Units Earned [Table Text Block] Schedule Of Sharebased Compensation Restricted Operating Partnership Units Earned [Table Text Block] Upon redemption of redeemable Class A units, at redemption value Stock Issued During Period, Value, Conversion of Units Lease fee percentage of rent twenty first to thirty years Lease Fee Percentage Of Rent Twenty First To Thirty Years Percentage of rent receivable from related party for leasing services for the twenty-first through thirtieth years of the lease. 1131 Third Avenue One One Three One Third Avenue [Member] One One Three One Third Avenue [Member] Terminal capitalization rates Measurement Input, Terminal Capitalization Rate [Member] Measurement Input, Terminal Capitalization Rate [Member] Other (Including Signage) Other Including Signage [Member] New York Office Other Including Signage [Member] Redemption of preferred shares / units Payments for Repurchase of Preferred Stock and Preference Stock Interest And Debt Expense Interest And Debt Expense [Text Block] This disclosure relates to the details of interest and debt expense of the company. The interest expense relates to secured and unsecured debt of the company 527 West Kinzie, Chicago Merchandise Mart IL 527 W. Kinzie, Chicago [Member] Merchandise Mart IL 527 W. Kinzie, Chicago [Member] Residential Properties Residential Properties [Member] Residential Property [Member] 640 Fifth Avenue Six Four Zero Fifth Avenue [Member] New York Office 640 Fifth Avenue [Member] Multiemployer Benefit Plans Multiemployer Plan [Line Items] Percentage of company owned by related party Percentage of Company Owned by Related Party his element represents the percentage of the company owned by related party Schedule Of Share Based Compensation Restricted Operating Partnership Units Activity Schedule Of Sharebased Compensation Restricted Operating Partnership Units Activity [Table Text Block] For restricted operating partnership units, disclosure of the number and weighted-average grant date fair value for restricted operating partnership units that were outstanding at the beginning and end of the year, and the number of restricted operating partnership units that were granted, vested, or forfeited during the year. Weighted average units outstanding, basic (in shares) Denominator for basic income (loss) per Class A unit - weighted average units and assumed conversions Weighted Average Limited Partnership Units Outstanding, Basic Convertible Preferred Stock Convertible Preferred Stock [Member] Supervisory fee, percent Supervisory Fee, Percent Supervisory Fee, Percent Operating Partnership Operating Partnership [Member] Operating Partnership [Member] Debt Disclosure [Abstract] Debt Disclosure [Abstract] The Mart, Chicago Merchandise Mart Chicago [Member] Merchandise Mart Merchandise Mart [Member] Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Secured Overnight Financing Rate (SOFR) Development fee percent Development Fee Percent Development fee as a percentage of the property development costs Investment period for commitments of the Fund, years Investment Period Fund Investment Period Fund Unsecured debt, gross Unsecured Debt, Gross Unsecured Debt, Gross Unsecured Debt Unsecured Debt [Member] Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Accounting Policies [Abstract] Accounting Policies [Abstract] 220 Central Park South condominium units ready for sale Transaction property value Real Estate, Held-for-Sale Variable rent expense Variable Lease, Cost Percentage of notional amount granted Share-based Compensation Arrangement by Share-based Payment Award, Notional Amount Granted Percentage Percentage of share based compensation notional amount granted. Shareholders' / Partners' equity: Stockholders' Equity Attributable to Parent [Abstract] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Partially Owned Properties Partially Owned Properties [Member] Schedule Of Preferred Units Schedule of Preferred Units [Table Text Block] Unsecured term loan (effective October 2023) Unsecured Term Loan Maturing October 2023 [Member] Unsecured Term Loan Maturing October 2023 Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Details Of Preferred Shares Of Beneficial Interest Details Of Preferred Shares Of Beneficial Interest [Abstract] Redeemable partnership units' share of above adjustments Redemption of Class A units for Vornado common shares, at redemption value Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Related Party Transaction Related Party Transaction [Line Items] Transaction Related Costs, Impairment Losses and Other [Abstract] Transaction Related Costs, Impairment Losses and Other [Abstract] Transaction Related Costs, Impairment Losses and Other [Abstract] Buildings and improvements Buildings and Improvements, Gross Options exercisable, Weighted Average Remaining Contractual Term Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term SNL US Office REIT Index SNL US Office REIT Index [Member] SNL US Office REIT Index [Member] Unsecured term loan Unsecured Term Loan [Member] Unsecured Term Loan Schedule of Identified Intangible Assets and Intangible Liabilities Schedule of Finite-Lived Intangible Assets [Table Text Block] Benchmark [Axis] Share-Based Compensation Arrangement Benchmark [Axis] Share-Based Compensation Arrangement Benchmark Balance principal amount Investment Owned, Balance, Principal Amount Schedule of Carrying Amounts and Fair Values of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Derivative Contract [Domain] Derivative Contract [Domain] Out of performance plan notional amount Share Based Compensation By Share Based Payment Award Notional Amount The aggregate notional amount of the out performance plan. Entity Registrant Name Entity Registrant Name Series K cumulative redeemable preferred shares/units called for redemption Stock Redeemed or Called During Period, Value Subsequent Events Subsequent Events [Text Block] Subsidiary of Regus PLC Subsidiary of Regus PLC [Member] Subsidiary of Regus PLC [Member] Proceeds from sale of condominium units and ancillary amenities at 220 Central Park South Net proceeds from sale of real estate Proceeds from Sale of Real Estate Held-for-investment Termination payment Lessor, Operating Lease, Lease Termination Payment Lessor, Operating Lease, Lease Termination Payment Expected dividend yield (percentage) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Real estate fund investments Increase (Decrease) in Real Estate Fund Investments Increase (Decrease) in Real Estate Fund Investments Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] Real Estate Properties Real Estate Properties [Line Items] Leases [Abstract] Leases [Abstract] Total equity Beginning balance, value Ending balance, value Total equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Deferred tax assets, net Deferred Tax Assets, Operating Loss Carryforwards Asset Class [Domain] Asset Class [Domain] Multiemployer Benefit Plans Multiemployer Plan [Text Block] Return of capital from real estate fund investments Return of Capital from Real Estate Fund Investments Return of Capital from Real Estate Fund Investments Redeemable Noncontrolling Interest Redeemable Noncontrolling Interest [Line Items] Minimum Minimum [Member] 443 Broadway Four Four Three Broadway [Member] New York Office 443 Broadway [Member] Entity Emerging Growth Company Entity Emerging Growth Company Change in fair value of consolidated interest rate swaps and other Increase (Decrease) in Accumulated Other Comprehensive Loss Due to Change in Fair Value of Interest Rate Swaps Increase (Decrease) in Accumulated Other Comprehensive Loss Due to Change in Fair Value of Interest Rate Swaps Common shares of beneficial interest: par value per share (in dollars per share) Common Stock, Par or Stated Value Per Share Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] 350 Park Avenue Office Building 350 Park Avenue Office Building [Member] 350 Park Avenue Office Building Fair Value Measurements Fair Value Disclosures [Text Block] Investment, Name [Axis] Investment, Name [Axis] Net operating loss carryforwards, valuation allowance Operating Loss Carryforwards, Valuation Allowance Distribution to noncontrolling interests / redeemable security holders and noncontrolling interests in consolidated subsidiaries Payments of Ordinary Dividends, Noncontrolling Interest Trading Symbol Trading Symbol Entity File Number Entity File Number Other Liabilities Other Liabilities [Member] Collateral property, net carrying value Collateral Property Net Carrying Value The net carrying value of property collateralizing the notes and mortgages payable Identified Intangible Assets and Liabilities Intangible Assets Disclosure [Text Block] Operational Operational [Member] Operational Unfunded commitments of Fund Unfunded Commitments Of Fund Unfunded Commitments Of the Fund 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Four Period allowed for termination of automatic renewal of management agreement Period Allowed For Termination Of Automatic Renewal Of Management Agreement Maximum Period Allowed For Termination Of Automatic Renewal Of Management Agreement Less: Accumulated depreciation on assets sold, written-off and deconsolidated SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Investment in Real Estate Sold Put option closing period Real Estate Investment, Put Option Closing Period Real Estate Investment, Put Option Closing Period Less comprehensive loss (income) attributable to noncontrolling interests / in noncontrolling interests consolidated subsidiaries Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Real estate, measurement input Other Real Estate Owned, Measurement Input Title of Individual [Axis] Title of Individual [Axis] Contractual Obligation, Fiscal Year Maturity Schedule [Abstract] Contractual Obligation, Fiscal Year Maturity Schedule [Abstract] Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Granted (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Effective income tax reconciliation, percent Effective Income Tax Rate Reconciliation, Percent Special allocation Share-based Compensation Arrangement by Share-based Payment Award, Special Allocation Share-based Compensation Arrangement by Share-based Payment Award, Special Allocation Rental revenues Rental revenues Rental Revenue [Member] Rental Revenue [Member] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] One Park Avenue Mortgage Loan Expiring March 2024 One Park Avenue Mortgage Loan Expiring March 2024 [Member] One Park Avenue Mortgage Loan Expiring March 2024 Prime Rate Prime Rate [Member] Transaction Related Costs, Impairment Losses and Other [Line Items] Transaction Related Costs, Impairment Losses and Lease Termination Gain [Line Items] [Line Items] for Transaction Related Costs, Impairment Losses and Lease Termination Gain [Table] Expected volatility, maximum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Other, net Other Net Attributable To Redeemable Noncontrolling Interest Other Net Attributable To Redeemable Noncontrolling Interest Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Revenue from related parties Revenue from Related Parties 90 Park Avenue Ninety Park Avenue [Member] New York Office 90 Park Avenue [Member] Credit Facility [Domain] Credit Facility [Domain] Series K preferred share / unit issuance costs Preferred share / unit issuance costs Preferred Stock Redemption Premium Operating Operating expenses Operating Costs and Expenses Net (loss) income per common share (in dollars per share) Earnings Per Share, Basic Award requisite service period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Vested in period, fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Distributions of capital from partially owned entities Distributions of capital from partially owned entities This item represents disclosure of the amount of capital distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. Deferred compensation plan Deferred Compensation Liability, Current and Noncurrent The Farley Building The Farley Building [Member] The Farley Building Amortization of discount on investments in U.S. Treasury bills Investment Income, Amortization of Discount Ownership [Domain] Ownership [Domain] Percentage commissions on sale of assets under fifty million Percentage Commissions On Sale Of Assets Under Fifty Million Percentage of gross proceeds under $50,000,000 from the sale of any assets, receivable from related party. Entity Interactive Data Current Entity Interactive Data Current 2023 Lessor, Operating Lease, Payment to be Received, Year One Net investment income (loss) Real Estate Transfer Tax Paid Real Estate Transfer Tax Paid Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Participation interest Participating Mortgage Loans, Participation Liabilities, Amount 435 Seventh Avenue Four Three Five 7th Avenue [Member] New York Office 435 7th Avenue [Member] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Moynihan Train Hall Moynihan Train Hall [Member] Moynihan Train Hall [Member] Proceeds from maturities of U.S. Treasury bills Proceeds from Sale of Short-Term Investments Partnership Interest Partnership Interest [Member] Deferred compensation shares / units and options, value Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Class of Stock [Axis] Class of Stock [Axis] Thereafter Long-Term Debt, Maturity, after Year Five Income Taxes Income Tax, Policy [Policy Text Block] Repurchase of shares / Class A units related to stock compensation agreements and related tax withholdings and other Repurchase of shares related to stock compensation arrangements and related tax withholdings Increase (decrease) in retained earnings associated with the repurchase of shares related to stock compensation arrangements and associated employee tax withholdings. Under dividend reinvestment plan Stock Issued During Period, Value, Dividend Reinvestment Plan Lease, term (in years) Lessee, Operating Lease, Renewal Term Earnings less than distributions Retained Earnings (Accumulated Deficit) Cash equivalents, carrying amount Cash Equivalents, at Carrying Value Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Change in fair value of interest rate swaps and other Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges And Other, Net of Tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges And Other, Net of Tax Recurring Fair Value, Recurring [Member] Options exercisable at end of period (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Related Party Transactions Related Party Transactions Disclosure [Text Block] 608 Fifth Avenue Six Zero Eight Fifth Avenue [Member] Six Zero Eight Fifth Avenue [Member] Document Fiscal Year Focus Document Fiscal Year Focus Share Based Compensation Employee Stock Purchase Plan Activity Share Based Compensation Employee Stock Purchase Plan Activity [Abstract] Matures in June 2027 Matures in June 2027 [Member] Matures in June 2027 40 Fulton Street Office And Retail Building 40 Fulton Street Office And Retail Building [Member] 40 Fulton Street Office And Retail Building Details Of Income From Real Estate Funds Details Of Income From Real Estate Funds [Abstract] Unsecured term loan (effective 10/23) Unsecured Term Loan Effective October 2023 [Member] Unsecured Term Loan Effective October 2023 Cash Flows from Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Insurance limit per occurrence Insurance Limit Per Occurrence Insurance Limit Per Occurrence Deferred Charges Deferred Charges, Policy [Policy Text Block] Cap strike rate Derivative, Cap Interest Rate Defeasance cost, noncash expense attributable to noncontrolling interest Defeasance Cost, Noncash Expense Attributable to Noncontrolling Interest Defeasance Cost, Noncash Expense Attributable to Noncontrolling Interest Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] California CALIFORNIA Loans receivable, measurement input Loans Receivable, Measurement Input Loans Receivable, Measurement Input Loss Contingencies [Table] Loss Contingencies [Table] 148 Spring Street One Four Eight Spring Street [Member] New York Office 148 Spring Street [Member] Rent expense Operating Lease, Expense Variable Interest Entities [Abstract] Variable Interest Entities [Abstract] Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Axis] Interest and Other Income [Abstract] Interest and Other Income [Abstract] 138-142 West 32nd Street One Three Eight - 142 West 32nd Street [Member] One Three Eight - 142 West 32nd Street Property. Redeemable Noncontrolling Interest, by Legal Entity [Table] Redeemable Noncontrolling Interest, by Legal Entity [Table] Excess of investee's carrying amount over equity in net assets Equity Method Investment, Difference Between Carrying Amount and Underlying Equity 150 East 58th Street One Five Zero East 58th Street [Member] New York Office 150 East 58th Street [Member] Accounts receivable, related parties Accounts Receivable, Related Parties Common shares of beneficial interest: outstanding shares (shares) Beginning balance, shares Ending balance, shares Common shares / Class A units of beneficial interest: outstanding shares Common Stock, Shares, Outstanding Investments in partially owned entities Carrying amount of investments in partially owned entities Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Fixed rate Fixed Rate [Member] Fixed Rate [Member] Income tax (expense) benefit Income tax expense (benefit) Income Tax Expense (Benefit) Geographical [Domain] Geographical [Domain] Entity Public Float Entity Public Float Balance Sheet Location [Domain] Balance Sheet Location [Domain] Aggregate of preferred equity interests Real Estate Investments, Joint Ventures OPPs Out Performance Plan [Member] Out Performance Plan. Property Management Fee Property Management Fee [Member] Property Management Fee Interest on cash and cash equivalents and restricted cash Interest on Cash and Cash Equivalents and Restricted Cash Interest on Cash and Cash Equivalents and Restricted Cash Illinois ILLINOIS Equity method investment, effective ownership percentage Equity Method Investment, Effective Ownership Percentage Equity Method Investment, Effective Ownership Percentage Derivative liability, fair value Derivative Liability, Subject to Master Netting Arrangement, before Offset Loss Contingencies [Line Items] Loss Contingencies [Line Items] Preferred stock, dividend rate, per-dollar-amount (in dollars per share) Preferred Stock, Dividend Rate, Per-Dollar-Amount 100 West 33rd Street Hundred West 33rd Street [Member] New York Office 100 West 33rd Street [Member] Maturing in December 2027 Maturing in December 2027 [Member] Maturing in December 2027 (LOSS) INCOME PER CLASS A UNIT - DILUTED: Net Income (Loss), Net of Tax, Per Outstanding Limited Partnership Unit, Diluted [Abstract] Numerator for basic income (loss) per share / per Class A unit Numerator For Basic Income Per Share Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period) and earnings allocated to participating securities. Threshold percentage to satisfy performance based condition Threshold Percentage to Satisfy Performance Based Condition Threshold Percentage to Satisfy Performance Based Condition Purchase of marketable securities in connection with defeasance of mortgage payable Payments to Acquire Marketable Securities in Connection with Defeasance of Mortgage Payable Payments to Acquire Marketable Securities in Connection with Defeasance of Mortgage Payable Under Vornado's employees' share option plan, shares Stock Issued During Period, Shares, Employee Stock Ownership Plan Insurance deductible percentage of balance of covered loss Insurance Deductible Percentage Of Balance Of Covered Loss Insurance deductible, percentage of balance of a covered loss Management and leasing fees Management And Leasing Fees [Member] Management And Leasing Fees [Member] Common shares of beneficial interest: $0.04 par value per share; authorized 250,000,000 shares; issued and outstanding 191,866,880 and 191,723,608 shares Common Stock, Value, Issued Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Preferred Shares Preferred Stock [Member] Senior unsecured notes Senior Notes [Member] Preferred or annual distribution rate (in dollars per share) Redeemable Noncontrolling Interest Operating Partnership Units Distribution Rate Preference or annual distribution rate of the operating partnership units held by third parties that are included in the redeemable noncontrolling interests on the consolidated balance sheet. Net realized and unrealized loss (income) on real estate fund investments Net Realized and Unrealized Gain (Loss) On Real Estate Fund Investments This element represents the realized and unrealized gains included in the earnings resulting from assets that are measured at fair value, that relate to the real estate funds assets. Other commitment Other Commitment Number of properties sold Number of Properties Sold Number of Properties Sold Variable Interest Entity Variable Interest Entity [Line Items] Cash and cash equivalents and restricted cash at beginning of period Cash and cash equivalents and restricted cash at end of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Less net loss (income) attributable to noncontrolling interests in: Net Income (Loss) Attributable to Noncontrolling Interest [Abstract] Unsecured revolving credit facility The Revolving Credit Facility [Member] The Revolving Credit Facility Proceeds received from exercise of employee share options (Vornado stock options) and other Proceeds received from exercise of employee share options and other Proceeds from Stock Options Exercised Rudin Management Co, Inc. Rudin Management Co, Inc. [Member] Rudin Management Co, Inc. Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract] Lessor, Operating Lease, Payments to be Received, Fiscal Year Maturity [Abstract] Multiemployer Plans Type [Domain] Retirement Plan Type [Domain] Below Market Leases Net Of Above Market Leases Below Market Leases Net Of Above Market Leases [Member] Below Market Leases Net Of Above Market Leases [Member] Amendment Flag Amendment Flag Variable Rate Spread Derivative, Basis Spread on Variable Rate Fixed rent expense Operating Lease, Cost Investment Holdings [Table] Investment Holdings [Table] Income (loss) from real estate fund investments Income (loss) from real estate fund investments (Income) loss from real estate fund investments Income (loss) from real estate fund investments This element represents the income (loss) from the Real Estate Fund before allocation to noncontrolling interests Investment Type [Axis] Investment Type [Axis] Moynihan Train Hall Obligation Financing Obligation, Deconsolidated Financing Obligation, Deconsolidated Class A units - 14,416,891 and 14,033,438 units outstanding Class A common units, carrying amount Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount Equity method investment pro rata share debt of partially owned entities Equity Method Investment Pro Rata Share Debt Of Partially Owned Entities Dispositions Mergers, Acquisitions and Dispositions Disclosures [Text Block] 825 Seventh Avenue Eight Two Five 7th Avenue [Member] New York Office 825 7th Avenue [Member] Paramus Paramus [Member] Term of management agreement Term Of Management Agreement Renewal Term Of Management Agreement Preferred share dividends / unit distributions Preferred Stock Dividends, Income Statement Impact Acquisitions of real estate and other Payments to Acquire Other Property, Plant, and Equipment Management, leasing and development fees Management Leasing And Development Fees Management Leasing And Development Fees Option exercisable at end of period (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Vornado Realty L.P. Vornado Realty L.P. [Member] Leasehold improvements, equipment and other Leasehold Improvements Equipment and Other [Member] Leasehold Improvements Equipment and Other [Member] Depreciation and amortization (including amortization of deferred financing costs) Depreciation, Depletion and Amortization Mandatorily redeemable instruments (included in other liabilities) Mandatorily Redeemable Preferred Stock, Fair Value Disclosure Term of contract Lessee, Operating Lease, Term of Contract Counterparty Name [Axis] Counterparty Name [Axis] Minimum percentage of taxable income distributed as dividends Minimum Percentage of Taxable Income Distributed As Dividends Minimum percentage of taxable income required to be distributed to qualify as REIT. Tenant services Tenant Services [Member] Tenant Services [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Cash paid for operating leases Operating Lease, Payments Marketable securities transferred in connection with the defeasance of mortgage payable Reclassifications of Temporary to Permanent Equity Repayments of borrowings Repayments of long-term debt Repayments of Long-Term Debt Vornado stock options Share-Based Payment Arrangement, Option [Member] Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Component Type [Domain] Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Component Type [Domain] Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Component Type [Domain] Schedule of Derivative Liabilities at Fair Value Schedule of Derivative Liabilities at Fair Value [Table Text Block] Land SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Land, Amount 1290 Avenue of the Americas One Two Nine Zero Avenue Of Americas [Member] New York Office 1290 Avenue Of The Americas [Member] Interest and Other Investment Income (Loss), Net Other Income and Other Expense Disclosure [Text Block] Lease fee percentage of rent eleven to twenty years Lease Fee Percentage Of Rent Eleven To Twenty Years Percentage of rent receivable from related party for leasing services for the eleventh through twentieth years of the lease. General Liability General Liability [Member] Common shares of beneficial interest: authorized shares (shares) Common Stock, Shares Authorized Long-Term Performance Award 2022 Long-Term Performance Award 2022 [Member] Long-Term Performance Award 2022 Insurance maximum coverage limit in aggregate Insurance Maximum Coverage In Aggregate Insurance maximum coverage limit in aggregate. Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Moynihan Train Hall expenditures Payments for Construction in Process Total expenses Operating Expenses Maximum Maximum [Member] New York NEW YORK Acquisitions and Dispositions [Line Items] Acquisitions and Dispositions [Line Items] Acquisitions and Dispositions [Line Items] Interest and debt expense Interest and debt expense Interest and debt expense Interest and Debt Expense Cash and cash equivalents Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash and Cash Equivalents, at Carrying Value Designated as Hedging Instrument Designated as Hedging Instrument [Member] Intangible Assets, Net (Excluding Goodwill) [Abstract] Intangible Assets, Net (Excluding Goodwill) [Abstract] Northeast Peer Group Custom Index Northeast Peer Group Custom Index [Member] Northeast Peer Group Custom Index Cash and restricted cash Cash and Restricted Cash Cash and Restricted Cash Measurement Frequency [Domain] Measurement Frequency [Domain] Shareholders' Equity/Partners' Capital Stockholders' Equity Note Disclosure [Text Block] New Jersey NEW JERSEY Senior unsecured notes, net Senior Notes Mortgages payable Increase In Liabilities Resulting From Consolidation, Mortgages Payable, Net Increase In Liabilities Resulting From Consolidation, Mortgages Payable, Net Floating After January 2025 Floating After January 2025 [Member] Floating [Member] Schedule of Multiemployer Plans [Table] Multiemployer Plan [Table] Percentage reduction threshold Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage Reduction Threshold Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage Reduction Threshold Regus PLC Regus PLC [Member] Regus PLC [Member] 966 Third Avenue Nine Six Six Third Avenue [Member] New York Office 966 Third Avenue [Member] Multiemployer Plan, Pension, Significant [Abstract] Terrorism Acts Terrorism Acts [Member] Terrorism Acts [Member] (Loss) income from deferred compensation plan assets Gain Loss of investments in deferred compensation plan Gain Loss of investments in deferred compensation plan Variable Interest Entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] Tenant and other receivables Increase (Decrease) in Accounts Receivable Title of 12(b) Security Title of 12(b) Security Receivable arising from the straight-lining of rents Deferred Rent Receivables, Net Effective Through July 2027 Effective Through July 2027 [Member] Effective Through July 2027 Ownership percentage by noncontrolling owners Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Investments in U.S. Treasury bills Short-Term Investments Matures in July 2027 Matures in July 2027 [Member] Matures in July 2027 Other income Product and Service, Other [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Audit Information [Abstract] Audit Information Common shares issued: / Class A Units issued to Vornado Common Shares Issued [Abstract] Maryland MARYLAND Deduct: NOI attributable to noncontrolling interests in consolidated subsidiaries NOI attributable to noncontrolling interests in consolidated subsidiaries Net Operating Income (Loss), Portion Attributable to Noncontrolling Interest, Total Net Operating Income (Loss), Portion Attributable to Noncontrolling Interest, Total Net gains on disposition of wholly owned and partially owned assets Gain (Loss) on Transfer Of Interest In Properties To Real Estate Investments, Joint Ventures Gain (Loss) on Transfer Of Interest In Properties To Real Estate Investments, Joint Ventures Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Qualified Dividend Qualified Dividend [Member] Qualified Dividend Segment Information Segment Reporting Disclosure [Text Block] Impairment Losses, Transaction Related Costs and Other Transaction Related Costs, Impairment Losses and Other [Text Block] Transaction Related Costs, Impairment Losses and Other [Text Block] Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee [Domain] Deferred tax liabilities Deferred Tax Liabilities, Net Insurance Coverage Type Name [Domain] Insurance Coverage Type Name [Domain] LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY Liabilities and Equity [Abstract] Fair Value Estimate of Fair Value Measurement [Member] Real Estate Real Estate, Policy [Policy Text Block] Real estate accumulated depreciation Real Estate Accumulated Depreciation Before Accumulated Depreciation On Asset Sold And Written Off The subtotal of accumulated depreciation balance excluding accumulated depreciation on assets sold and write-off of accumulated depreciation on fully depreciated assets. Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Property rentals Property Rentals [Member] Property Rentals [Member] Income Tax Authority [Axis] Income Tax Authority [Axis] Series D Cumulative Redeemable Preferred Unit Cumulative Redeemable Preferred Unit [Member] Cumulative Redeemable Preferred Unit [Member] Interest and Debt Expense [Abstract] Interest and Debt Expense [Abstract] Options outstanding, Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Secured Overnight Financing Rate After March 2024 Secured Overnight Financing Rate After March 2024 [Member] Secured Overnight Financing Rate After March 2024 715 Lexington Avenue Lexington Avenue 715 Retail [Member] Lexington Avenue 715 Retail [Member] Loans receivable (included in investments in partially owned entities and in other assets) Loans Receivable, Fair Value Disclosure San Francisco San Francisco [Member] Weighted average shares outstanding, basic (in shares) Denominator for basic income (loss) per share - weighted average shares (in shares) Weighted Average Number of Shares Outstanding, Basic Net basis difference of assets and liabilities between tax basis and GAAP basis Net Basis Difference Of Assets And Liabilities Between Tax Basis And GAAP Basis Net Basis Difference Of Assets And Liabilities Between Tax Basis And GAAP Basis Equity method ownership percentage Equity method ownership percentage Equity Method Investment, Ownership Percentage Interest Rate Effective Date [Axis] Interest Rate Effective Date [Axis] Interest Rate Effective Date Expired or cancelled (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Expiration or Cancellations in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Expiration or Cancellations in Period, Weighted Average Grant Date Fair Value Interest rate swaps (included in other liabilities) Interest Rate Derivative Liabilities, at Fair Value Number of extensions (extension) Number of Extensions Number of Extensions Net gains on disposition of wholly owned and partially owned assets Net gains on disposition of wholly owned and partially owned assets Gain (Loss) on Disposition of Assets Debt Covenant [Axis] Debt Covenant [Axis] Debt Covenant [Axis] Tenant and other receivables Accounts Receivable, after Allowance for Credit Loss Notional Amount Derivative, Notional Amount Preferred shares of beneficial interest: no par value per share; authorized 110,000,000 shares; issued and outstanding 48,792,902 shares Preferred stock, value, issued , balance Preferred Stock, Value, Issued Total redeemable noncontrolling interests / partnership units Noncontrolling interests Beginning balance Ending balance Redeemable Noncontrolling Interest, Equity, Carrying Amount Vornado restricted stock Restricted Stock [Member] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Interest rate swaps and caps (included in other assets) Interest Rate Derivative Assets, at Fair Value Summary of Changes In Fair Value of Fund and the Crowne Plaza Joint Venture Summary of Changes In Fair Value of Real Estate Fund Investments Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Schedule of Amounts Included in Measurement of Lease Liability Schedule of Amounts Included in Measurement of Lease Liability [Table Text Block] Schedule of Amounts Included in Measurement of Lease Liability [Table Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Stock-based Compensation Share-Based Payment Arrangement [Text Block] Interest Rate Effective Date [Domain] Interest Rate Effective Date [Domain] Interest Rate Effective Date [Domain] Preferred stock, redemption price per share (in common shares/Class A units per share/unit) Preferred Stock, Redemption Price Per Share Common Area 731 Lexington Avenue Common Area 731 Lexington Avenue [Member] Common Area 731 Lexington Avenue [Member] 2024 Lessor, Operating Lease, Payment to be Received, Year Two Non- controlling Interests in Consolidated Subsidiaries Noncontrolling Interest [Member] 85 Tenth Avenue Eight Five Tenth Avenue [Member] Eight Five Tenth Avenue [Member] Debt term (years) Debt Instrument, Term Related Party [Axis] Related Party [Axis] Benchmark [Domain] Benchmark [Domain] [Domain] for Benchmark [Axis] Operating Partnership Net income (loss) attributable to nonredeemable noncontrolling interests in consolidated subsidiaries Net (loss) income Net Income (Loss) Attributable to Redeemable Noncontrolling Interest Land Land [Member] Share-based payment awards and convertible securities (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements (LOSS) INCOME PER COMMON SHARE - DILUTED: Earnings Per Share, Diluted [Abstract] Paydowns Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] 606 Broadway Six Zero Six Broadway [Member] Property on 606 Broadway. Disposal Group Name [Domain] Disposal Group Name [Domain] Level 2 Fair Value, Inputs, Level 2 [Member] Participating Mortgage Loans [Axis] Participating Mortgage Loans [Axis] Maturing in April 2026 Maturing in April 2026 [Member] Maturing in April 2026 Center Building Center Building [Member] Center Building Interstate Properties Interstate Properties [Member] Interstate Properties [Member] Current Fiscal Year End Date Current Fiscal Year End Date Purchases/additional fundings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Interest and other investment income (loss), net Interest and other investment income, net Interest and other investment (income) loss, net Interest and other investment (loss) income, net This element represents interest and other investment loss income net of tax incuding impairment losses, mark-to-market adjustments for derivatives or mark-to-market investments in deferred compensation. Reconciliation of Cash and Cash Equivalents and Restricted Cash: Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Roll Forward] Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Crowne Plaza Time Square Hotel Crowne Plaza Time Square Hotel [Member] Crowne Plaza Time Square Hotel [Member] Annapolis, Maryland Annapolis [Member] Annapolis [Member] Contributions Noncontrolling Interest, Increase From Limited Partners' Contribution Increase in noncontrolling interest balance due to the limited partners' contributions Risk free interest rate, minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Moynihan Train Hall reimbursement from Empire State Development Proceeds from Construction Loans Payable Conversion Feature [Domain] Conversion Feature [Domain] Rudin Rudin [Member] Rudin Leases [Line Items] Leases [Line Items] [Line Items] for Leases [Table] Partners' capital General Partners' Capital Account 431 Seventh Avenue Four Three One 7th Avenue [Member] New York Office 431 7th Avenue Credit losses on loans receivable Credit losses on loans receivable Financing Receivable, Credit Loss, Expense (Reversal) Stock options expiration term Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Earnings allocated to unvested participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Schedule of Derivative Assets at Fair Value Schedule of Derivative Assets at Fair Value [Table Text Block] Controlling interest, percentage owned Controlling Interest, Percentage Owned Controlling Interest, Percentage Owned Risk free interest rate, maximum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Majority-Owned Subsidiary, Unconsolidated Majority-Owned Subsidiary, Unconsolidated [Member] Income Tax Authority [Domain] Income Tax Authority [Domain] Under Vornado's employees' share option plan Stock Issued During Period, Value, Employee Stock Ownership Plan Realized (loss) income on exited investments Unrealized Gain (Loss) on Investments Investments in U.S. Treasury Bills Short Term Investment, Policy [Policy Text Block] Short Term Investment, Policy Redeemable noncontrolling interest, exchange ratio Redeemable Noncontrolling Interest, Exchange Ratio Redeemable Noncontrolling Interest, Exchange Ratio Schedule of Interest And Other Investment Income (Loss), Net Interest and Other Income [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Term of the fund, years Equity Commitment Fund Term Equity Commitment Fund Term, in years Loans Receivable Loans Receivable [Member] Exchange [Domain] Exchange [Domain] Credit Facility [Axis] Credit Facility [Axis] Decrease in fair value of marketable securities Market-to-market decrease in the fair value of marketable security (sold on January 23, 2020) Marketable Securities, Unrealized Gain (Loss) Tax Treatment Of Dividend [Domain] Tax Treatment Of Dividend [Domain] Equity [Abstract] Equity [Abstract] Costs capitalized subsequent to acquisition SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Cost Capitalized Subsequent to Acquisition, Improvements Subsequent Event [Table] Subsequent Event [Table] 692 Broadway Six Nine Two Broadway [Member] New York Office 692 Broadway [Member] Vested (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Entity Tax Identification Number Entity Tax Identification Number Number of shares authorized (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Reclassification of condominium units from "development costs and construction in progress" to "220 Central Park South condominium units ready for sale" Real Estate Owned, Transfer to Real Estate Owned Rate Type [Axis] Rate Type [Axis] Rate Type [Axis] All-In Swapped Rate Derivative, Fixed Interest Rate Insurance limit per property Insurance Limit Per Property Insurance limit per property. Lessor, Operating Rent Expense Lessor, Operating Rent Expense [Table Text Block] Lessor, Operating Rent Expense Write-off of lease receivables deemed uncollectible Less: write-off of straight-line rent and tenant receivables deemed uncollectible Financing Receivable, Allowance for Credit Loss, Writeoff Consolidated Entities [Domain] Consolidated Entities [Domain] NOI at share NOI at share Operating Income Loss Cash Basis Represents cash basis of Net Operating Income which is before allocation to the noncontrolling interest of the Operating Partnership. Debt default, amount Debt Instrument, Debt Default, Amount Restricted Cash Restricted Cash [Member] Restricted Cash [Member] Contractual obligation (up to) Guarantor Obligations, Maximum Exposure, Undiscounted 1100 Lincoln Road 1100 Lincoln Road [Member] 1100 Lincoln Road Net (decrease) increase in cash and cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Wayne Towne Center, New Jersey Wayne Towne Center [Member] Wayne Towne Center [Member] Entity Central Index Key Entity Central Index Key Real Estate [Abstract] Real Estate [Abstract] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Real estate, at cost: Real Estate Investment Property, at Cost [Abstract] Measurement Input Type [Axis] Measurement Input Type [Axis] Entity [Domain] Entity [Domain] City Area Code City Area Code OP Units Out Performance Units [Member] Out Performance Units [Member] Percentage bearing variable interest Long-Term Debt, Percentage Bearing Variable Interest, Percentage Rate ASSETS Assets [Abstract] Auditor [Table] Auditor [Table] 334 Canal Street Three Three Four Canal Street [Member] New York Office 334 Canal Street [Member] Proceeds from sale of land held-for-investment Proceeds from Sale of Land Held-for-investment 5.25% Series M Series M Preferred Stock [Member] Series M Preferred Stock [Member] Redeemable noncontrolling interests' share of above adjustments Other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Percentage of benchmark Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Benchmark Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Benchmark Asset Class [Axis] Asset Class [Axis] Matures in July 2022 Matures in July 2022 [Member] Matures in July 2022 2023 Long-Term Debt, Maturity, Year One Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Capital Units by Class [Axis] Capital Units by Class [Axis] Investments in partially owned entities Payments to Acquire Equity Method Investments Non-Certified Acts of Terrorism Non-Certified Acts of Terrorism [Member] Non-Certified Acts of Terrorism [Member] Grants in period, weighted average grant date fair value (usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Variable Rate [Axis] Variable Rate [Axis] Leases Lessor, Operating Leases [Text Block] Equity in net loss (income) of partially owned entities Equity in net loss (income) of partially owned entities Equity in net income (loss) Income (Loss) from Equity Method Investments Non-cash adjustments for straight-line rents, amortization of acquired below-market leases, net and other Straightline rents and other Adjustments Amount of the non cash adjustment to straight-line rents, amortization of acquired below-market leases, net and other. Other liabilities Increase (Decrease) in Other Operating Liabilities Piers 92 and 94 Piers 92 and 94 [Member] Piers 92 and 94 [Member] Insurance Coverage Type Name [Axis] Insurance Coverage Type Name [Axis] Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Other Commitments Other Commitments [Abstract] Weighted Average Weighted Average [Member] 2023 Finite-Lived Intangible Asset, Expected Amortization, Year One 7 West 34th Street Seven West 34th Street [Member] New York 7 West 34th Street [Member] Schedule of Earnings Per Share Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Interest Rate Maturing In September 2032 Interest Rate Maturing In September 2032 [Member] Interest Rate Maturing In September 2032 Additional estimated lease liability arising from the recognition of right-of-use asset Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Real Estate [Domain] Real Estate [Domain] Out Performance Plan 2020 Out Performance Plan 2020 [Member] Out Performance Plan 2020 Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Total undiscounted cash flows Lessee, Operating Lease, Liability, to be Paid Net (loss) income Net (loss) income Net (loss) income Net (loss) income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Additions during the period SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Other Addition Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Unsecured revolving credit facilities, fair value Lines of Credit, Fair Value Disclosure Square footage of real estate property (in sqft) Area of Real Estate Property Proceeds from sales of real estate Proceeds from Sale of Other Real Estate 510 Fifth Avenue Five One Zero 5th Avenue [Member] New York 510 5th Avenue - Retail [Member] 2024 Long-Term Debt, Maturity, Year Two 608 Fifth Avenue lease liability extinguishment gain Gain (Loss) on Termination of Lease Interest accrual Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Interest Accrual Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Interest Accrual Investments in U.S. Treasury bills Investments, Fair Value Disclosure 1290 Avenue of the Americas mortgage loan A1290 Avenue Of Americas Mortgage Loan [Member] A1290 Avenue Of Americas Mortgage Loan SoHo Properties SoHo Properties [Member] SoHo Properties Preferred stock dividend rate Preferred Stock, Dividend Rate, Percentage Under dividend reinvestment plan, shares Stock Issued During Period, Shares, Dividend Reinvestment Plan Schedule Of Other Share Based Compensation, Activity Share-Based Payment Arrangement, Outstanding Award, Activity, Excluding Option [Table Text Block] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Option to acquire interest in joint venture, percentage Real Estate Investment, Option to Acquire Interest in Joint Venture, Percentage Real Estate Investment, Option to Acquire Interest in Joint Venture, Percentage 555 California Street, California Five Five Five California Street [Member] Domain member used to indicate facts reported for the continuing operations of 555 California Street. Number of floors Number of Floors Number of Floors Decrease in assets and liabilities resulting from the deconsolidation of Moynihan Train Hall: Decrease in assets and liabilities resulting from the deconsolidation of Moynihan Train Hall: [Abstract] Decrease in assets and liabilities resulting from the deconsolidation of Moynihan Train Hall: Deferred compensation plan assets (included in restricted cash and other assets) Deferred Compensation Plan Assets Special distribution, percent Special Distribution, Percent Special Distribution, Percent Deferred leasing costs, net of accumulated amortization of $237,395 and $211,775 Deferred Leasing And Financing Costs Net Of Accumulated Amortization This element represents costs incurred by the lessor that are (a) costs to originate a lease incurred in transactions with independent third parties that (i) result directly from and are essential to acquire that lease and (ii) would not have been incurred had that leasing transaction not occurred and (b) certain costs directly related to specified activities performed by the lessor for that lease. Those activities are: evaluating the prospective lessee's financial condition; evaluating and recording guarantees, collateral, and other security arrangements; negotiating lease terms; preparing and processing lease documents; and closing the transaction. This element is net of accumulated amortization, combined with, for an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. Various mortgage loans Various Mortgage Loans [Member] Various Mortgage Loans 484-486 Broadway 484-486 Broadway [Member] 484-486 Broadway Statistical Measurement [Domain] Statistical Measurement [Domain] Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] Variable Rate Variable Rate [Member] Variable Rate [Member] Proceeds from sales of marketable securities Proceeds from Sale and Maturity of Marketable Securities Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Conversion of Series A preferred shares to common shares / Conversion of Series A preferred units to Class A units, value Stock Issued During Period, Value, Conversion of Convertible Securities Federal Tax Authority Domestic Tax Authority [Member] Schedule of Impairment Losses and Transaction Related Costs, Net Schedule of Transaction Related Costs, Impairment Losses and Other [Table Text Block] Schedule of Transaction Related Costs, Impairment Losses and Other [Table Text Block] Equity Method Investments And Income From Equity Method Investments Equity Method Investments And Income From Equity Method Investments [Abstract] This abstract relates to equity method investments and income from equity method investments 650 Madison Avenue Six FIve Zero Madison Avenue [Member] Six FIve Zero Madison Avenue [Member] Net (loss) income attributable to Vornado / Vornado Realty L.P. Net income (loss) attributable to Vornado / Vornado Realty L.P. Net Income (Loss) Attributable to Parent Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Schedule of Maturities of Long-Term Debt Schedule of Maturities of Long-Term Debt [Table Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Vornado Capital Partners Real Estate Fund Vornado Capital Partners Real Estate Fund [Member] BMS cleaning fees Building Maintenance Service [Member] Building services provided by whole-owned subsidiary. Number of units sold Number of Units Sold Number of Units Sold Total assets Assets, Fair Value Disclosure Leases Lessee, Operating Leases [Text Block] Lessee, operating lease, lease not yet commenced, term (years) Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract Plan Name [Axis] Plan Name [Axis] One Park Avenue One Park Avenue [Member] One Park Avenue Share-based compensation expense Share-Based Payment Arrangement, Expense, after Tax Investment Holdings Investment Holdings [Line Items] Title of 12(g) Security Title of 12(g) Security Vornado deductible, percentage of property value Registrant Deductible Percentage Of Property Value Vornado deductible, percentage of property value Real Estate [Line Items] Real Estate [Line Items] Derivative Instrument [Axis] Derivative Instrument [Axis] Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] Transaction Related Costs, Impairment Losses and Other [Table] Transaction Related Costs, Impairment Losses and Lease Termination Gain [Table] Transaction Related Costs, Impairment Losses and Lease Termination Gain [Table] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Less: Assets sold, written-off, reclassified to ready for sale and deconsolidated SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Cost of Investment in Real Estate Sold Level 1 Fair Value, Inputs, Level 1 [Member] Dispositions Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Net (loss) on sale of real estate Net gain on sale of land Gains (Losses) on Sales of Investment Real Estate Basis Of Presentation And Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Acquisitions and Dispositions [Table] Acquisitions and Dispositions [Table] Acquisitions and Dispositions [Table] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Other Identified Intangible Assets Other Identified Intangible Assets [Member] Other Identified Intangible Assets [Member] Schedule Of Share Based Compensation Restricted Stock And Restricted Stock Units Activity Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Class A Unit Capital Unit, Class A [Member] Changes in operating assets and liabilities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Related Party Transaction [Domain] Related Party Transaction [Domain] Other liabilities Other Liabilities Class A Units Owned by Vornado Class A Units Owned By Vornado [Member] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Forfeited (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Document Annual Report Document Annual Report Entity Listings, Exchange [Axis] Entity Listings, Exchange [Axis] Legal Entity [Axis] Legal Entity [Axis] Subsidiaries Subsidiaries [Member] Unsecured term loan Unsecured Term Loan Maturing August 2027 [Member] Unsecured Term Loan Maturing August 2027 Real Estate And Accumulated Depreciation SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] Fee and other income Fee And Other Income [Member] Fee And Other Income [Member] Trade shows Trade Shows [Member] Trade Shows [Member] Geographical [Axis] Geographical [Axis] Deferred leasing costs, accumulated amortization Deferred Leasing And Financing Costs Amortization For an unclassified balance sheet, the accumulated amortization, as of the reporting date, which represents the periodic charge to earnings of initial direct costs which have been deferred and are being allocated over the lease term in proportion to the recognition of rental income, combined with, for an unclassified balance sheet, the accumulated amortization, as of the reporting date, representing the periodic charge to earnings of deferred costs which are associated with debt obligations existing as of the end of the period. Cumulative redeemable preferred shares/units issuance Stock Issued During Period, Value, New Issues 304 Canal Street Three Zero Four Canal Street [Member] New York Office 304 Canal Street [Member] Amortized cost, current Debt Securities, Available-for-Sale, Amortized Cost, Current Real Estate [Table] Real Estate [Table] Add: NOI from partially owned entities Net Operating Income (Loss) from Equity Method Investments Net Operating Income (Loss) from Equity Method Investments Contributions Limited Partners Contributions [Abstract] Earnings per share Earnings per share [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Preferred shares of beneficial interest: issued shares (shares) Preferred Stock, Shares Issued Units Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Segments [Axis] Segments [Axis] Debt Debt Disclosure [Text Block] Real estate, net Real Estate Investment Property, Net Vests in January 2026 Vests in January 2026 [Member] Vests in January 2026 Product and Service [Domain] Product and Service [Domain] Entity Shell Company Entity Shell Company Farley Building Farley Building [Member] Farley Building PPIC PPIC [Member] Penn Plaza Insurance Company', our wholly owned consolidated subsidiary, is acting as re-insurance with respect to a portion of earthquake insurance coverage and insurance with respect to coverage for acts of terrorism as defined by TRIPRA. Number of units in real estate property (in number of residential units) Number of Units in Real Estate Property Excess of investee's fair value over carrying amount Equity Method Investment Fair Value In Excess Of Carrying Amount Equity Method Investment Fair Value In Excess Of Carrying Amount 2023 Lessee, Operating Lease, Liability, to be Paid, Year One 345 Montgomery Street Three Four FIve Montgomery Street [Member] Three Four FIve Montgomery Street [Member] Return on preferred equity, net of our share of the expense Income (Loss) from Equity Method Investments, Preferred Income (Loss) from Equity Method Investments, Preferred Equity method investment fair value Equity Method Investment, Quoted Market Value Lease Revenues Lease Revenue [Member] Lease Revenue [Member] Financial Instrument [Axis] Financial Instrument [Axis] 2025 Long-Term Debt, Maturity, Year Three Affiliated Entity Affiliated Entity [Member] Vornado Realty Trust Vornado Realty Trust [Member] Vornado Realty Trust Subsequent Event Subsequent Event [Member] Document Period End Date Document Period End Date 2027 Lessor, Operating Lease, Payment to be Received, Year Five Net unrealized (loss) income on held investments Gain (Loss) on Sale of Investments Fifth Avenue and Times Square JV Fifth Avenue and Times Square JV [Member] Fifth Avenue and Times Square JV [Member] Assets Assets Assets Fair value of Series G convertible preferred units and Series D-13 cumulative redeemable preferred units Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Fair Value of Shares Auditor [Line Items] Auditor [Line Items] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Other, net Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Other Net Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Other Gain Loss Net PENN 11 Eleven Penn Plaza [Member] New York Office Eleven Penn Plaza [Member] Other All Other Except Real Estate Fund [Member] This member represents all other susidiaries excepts for the company's Real Estate Fund Interest Rate Swap Interest Rate Swap [Member] Preferred stock, liquidation preference per share (in dollars per share/unit) Preferred Stock, Liquidation Preference Per Share 2027 Lessee, Operating Lease, Liability, to be Paid, Year Five Exercised (in usd per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price The Farley Building Moynihan Office Building [Member] Moynihan Office Building [Member] Real Estate Fund Investments Real Estate Fund [Text Block] Disclosure for Vornado Capital Partners LP and Vornado Capital Partners Parallel LP The Fund Remaining mortgage loan Participating Mortgage Loans, Remaining Mortgage Loan, Amount Participating Mortgage Loans, Remaining Mortgage Loan, Amount (Loss) income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Absolute Absolute [Member] Absolute Component [Member] Weighted average remaining term Derivative, Average Remaining Maturity Segments [Domain] Segments [Domain] Dividends paid on preferred shares / Distributions to preferred unitholders Payments of Ordinary Dividends, Preferred Stock and Preference Stock (Loss) Income Per Share/(Loss) Income Per Class A Unit Earnings Per Share [Text Block] (LOSS) INCOME PER CLASS A UNIT - BASIC: Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax [Abstract] Grant-date fair value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value The fair value at grant date for equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Interest Rate Cap Interest Rate Cap [Member] Cash And Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Comprehensive (loss) income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Award Type [Domain] Award Type [Domain] LTPP Units LTPP Units [Member] LTPP Units Income Tax Contingency [Table] Income Tax Contingency [Table] Unsecured Term Loan Expiring October 2023 Unsecured Term Loan Expiring October 2023 [Member] Unsecured Term Loan Expiring October 2023 NBCR NBCR [Member] Amount of insurance coverage against damages to property caused by acts of terrorism including nuclear, biological, chemical and radiological acts as defined by TRIA. Cumulative redeemable preferred shares/units issuance, shares Stock Issued During Period, Shares, New Issues Multiemployer Health Plans Multiemployer Plans, Healthcare Benefit [Member] Insurance Insurance [Abstract] Mortgages Payable Mortgages [Member] Lease fee percentage of rent one to ten years Lease Fee Percentage Of Rent One To Ten Years Percentage of rent receivable from related party for leasing services for the first ten years of the lease. Office Building Office Building [Member] Entity Address, City or Town Entity Address, City or Town Duration of performance measurement period Duration Of Performance Measurement Period The period of time during which the performance of the stock will be evaluated to calculate the earning of the stock based awards. Depreciation expense SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Depreciation Expense EXPENSES: Operating Expenses [Abstract] Disease Coverage Disease Coverage [Member] Disease Coverage [Member] 2019 Omnibus Share Plan 2019 Omnibus Share Plan [Member] 2019 Omnibus Share Plan [Member] Insurance deductible Insurance deductible Insurance deductible Noncontrolling interests in consolidated subsidiaries Stockholders' Equity Attributable to Noncontrolling Interest Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] 2026 Lessor, Operating Lease, Payment to be Received, Year Four Deferred financing costs, net and other Deferred financing costs, net and other Debt Issuance Costs, Net Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Auditor Name Auditor Name Multiemployer Pension Plans Pension Plan [Member] Net operating loss carryforwards Operating Loss Carryforwards Chicago Chicago [Member] Domain member used to indicate facts reported for the continuing operations in Chicago Purchase of U.S. Treasury bills Purchase of U.S. Treasury bills Payments to Acquire Short-Term Investments Deferred Compensation Plan Assets Deferred Compensation Plan Assets [Member] Deferred Compensation Plan Assets Buildings & improvements and other Building Improvements [Member] Share Based Compensation Equity Instruments Other Than Stock Options And Restricted Stock Units Summary Share Based Compensation Equity Instruments Other Than Stock Options And Restricted Stock Units Summary [Abstract] Variable Interest Entities Variable Interest Entity Disclosure [Text Block] Restricted cash Restricted cash at beginning of period Restricted cash at end of period Restricted Cash and Cash Equivalents Vornado Restricted Stock Restricted Stock Units (RSUs) [Member] Entity Information [Line Items] Entity Information [Line Items] Land SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 770 Broadway Seven Seven Zero Broadway [Member] New York Office 770 Broadway [Member] Cash equivalents, fair value Cash and Cash Equivalents, Fair Value Disclosure Derivative liability, notional amount Derivative Liability, Notional Amount LIBOR London Interbank Offered Rate (LIBOR) [Member] Percentage For First Five Years Percentage For First Five Years [Member] Percentage For First Five Years [Member] Net (loss) income per Class A unit (in dollars per unit) Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax Subsequent Events [Abstract] Total revenues Revenues Change in fair value of interest rate swaps and other Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Real estate and accumulated depreciation life used for depreciation SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Life Used for Depreciation Distributions Redeemable Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Redeemable Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Consolidated subsidiaries Less (income) loss attributable to noncontrolling interests in consolidated subsidiaries Noncontrolling Interest in Net Income (Loss) Joint Venture Partners, Nonredeemable Amortization of intangible assets Amortization of Intangible Assets Cash payments for interest, excluding capitalized interest of $19,085, $38,320 and $40,855 Interest Paid, Excluding Capitalized Interest, Operating Activities Defeasance cost in connection with refinancing of mortgage payable Defeasance cost, noncash expense Defeasance Cost, Noncash Expense Defeasance Cost, Noncash Expense Adjustment for straight-line rents and amortization of acquired below-market leases and other, net Adjustment for Straight-Line Rents and Amortization of Acquired Below-Market Leases, Net Adjustment for Straight-Line Rents and Amortization of Acquired Below-Market Leases, Net 2025 Lessee, Operating Lease, Liability, to be Paid, Year Three 4 Union Square South mortgage loan A4 Union Square South Mortgage Loan [Member] A4 Union Square South Mortgage Loan Other Assets Other Assets [Member] Counterparty Name [Domain] Counterparty Name [Domain] Total Vornado shareholders' / partners equity Equity Stockholders' Equity Attributable to Parent Vesting [Domain] Vesting [Domain] Dividends on common shares Dividends, Common Stock Income (loss) from real estate fund investments net of noncontrolling interests in consolidated subsidiaries Net Income (Loss) from Real Estate Investment Partnership Identified intangible assets, accumulated amortization Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Matures in May 2028 Matures in May 2028 [Member] Matures in May 2028 Numerator: Net Income (Loss) Attributable to Parent [Abstract] 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Three 2027 Long-Term Debt, Maturity, Year Five Earnings Less Than Distributions Retained Earnings [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Net unrealized (loss) income on held investments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Unrealized Gain (Loss) Included In Earnings This element represents Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Realized Gain (Loss) Included In Earnings. 2025 Lessor, Operating Lease, Payment to be Received, Year Three Percentage of taxable income distributed Percentage Of Taxable Income Distributed This element describes the percentage of taxable income that the company has distributed to its shareholders as dividends. Common Shares of beneficial interest, $.04 par value per share Common Shares Common Stock [Member] 555 California Street mortgage loan A555 California Mortgage Loan [Member] A555 California Mortgage Loan Number of reportable segments (segment) Number of Reportable Segments Revenue Recognition Revenue [Policy Text Block] Property management fee agreement percentage of income Property Management Fee Agreement Percentage Of Income Percentage of income from property, received from the related party as property management fees. Summary Of Activity Of Redeemable Noncontrolling Interests Summary Of Activity Of Redeemable Noncontrolling Interests [Table Text Block] Summary Of Activity Of Redeemable Noncontrolling Interests [Text Block] Statement [Table] Statement [Table] Out Performance Plan 2021 Out Performance Plan 2021 [Member] Out Performance Plan 2021 AO LTIP Units AO LTIP Units [Member] AO LTIP Units [Member] Vested (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Debt instrument, interest rate, effective percentage Interest rate, end of period (in percentage) Debt Instrument, Interest Rate, Effective Percentage Lessor, lease not yet commenced, term of contract (years) Lessor, Operating Lease, Lease Not yet Commenced, Term of Contract Fair Value Inputs Quantitative Information Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] 5.40% Series L Series L Preferred Stock [Member] 5.40% Series L Cumulative Redeemable Preferred Stock [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] Related Party Transaction [Axis] Related Party Transaction [Axis] Disposal Group Name [Axis] Disposal Group Name [Axis] Equity Components [Axis] Equity Components [Axis] Other investments Other equity method investments Other equity method investments [Member] Other equity method investments Property level funds applied by lenders Investment Company, Committed Capital Contributions from noncontrolling interests / noncontrolling interests in consolidated subsidiaries Proceeds from Noncontrolling Interests Non-cash gain on extinguishment of 608 Fifth Avenue lease liability Gain On Extinguishment Of Lease Liability And Operating Lease, Impairment Loss Gain On Extinguishment Of Lease Liability And Operating Lease, Impairment Loss 595 Madison Avenue Five Nine Five Madison Avenue [Member] New York Office 595 Madison Avenue [Member] Expired (in usd per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Estimated taxable income net Estimated Taxable Income Net Estimated taxable income after reconciliation for tax differences Statement [Line Items] Statement [Line Items] Unvested at beginning of period (shares) Unvested at end of period (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Condominium units sold, percentage Condominium Units Sold, Percentage Condominium Units Sold, Percentage Variable Rate [Domain] Variable Rate [Domain] Gross amount Finite-Lived Intangible Assets, Gross Vornado Vornado [Member] Vornado Operating Lease, Lease Income Operating Lease, Lease Income [Table Text Block] Right-of-use assets Operating Lease, Right-of-Use Asset US Treasury Bill Securities US Treasury Bill Securities [Member] Capital contributions Tax credit advisor capital contributions Other Ownership Interests, Contributed Capital Accumulated Other Comprehensive (Loss) Income AOCI Attributable to Parent [Member] 6.5% Series A Series A Preferred Stock [Member] Auditor Firm ID Auditor Firm ID Earthquake California Properties Earthquake California Properties [Member] Amount of insurance coverage against damages to property caused by earthquakes in California. 5.25% Series N Series N Preferred Stock Series N Preferred Stock [Member] Series N Preferred Stock Document Transition Report Document Transition Report NOI at share - cash basis Cash Basis Property-Level NOI Cash Basis Property-Level NOI Effective Through June 2027 Effective Through June 2027 [Member] Effective Through June 2027 Local Phone Number Local Phone Number Interest And Debt Expense Interest And Debt Expense [Table Text Block] The schedule of interest and debt expense on secured and unsecured debt Other Other Segment [Member] Other Member including eliminations, non-core business related activities. Schedule Of Share Based Compensation Stock Options Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] PILOT payments Income Taxes, Payment in Lieu of Taxes and Future Rent Income Taxes, Payment in Lieu of Taxes and Future Rent Recently Issued Accounting Literature New Accounting Pronouncements, Policy [Policy Text Block] Mortgages payable, gross Notes And Loans Payable Gross Notes And Loans Payable Gross Total theMART Total Merchandise Mart [Member] Merchandise Mart Total Merchandise Mart [Member] Percentage increase lease fee if broker used Percentage Increase Lease Fee If Broker Used Percentage of increase in leasing services fee receivable from related party if a real estate broker is used. State and Local Jurisdiction State and Local Jurisdiction [Member] Denominator: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Schedule of Real Estate Properties [Table] Schedule of Real Estate Properties [Table] Total liabilities Liabilities, Fair Value Disclosure 220 CPS condominium units A220 CPS condominium units [Member] A220 CPS condominium units 350 Park Avenue Three Five Zero Park Avenue [Member] New York 350 Park Avenue [Member] Fixed billings Operating Lease, Lease Income, Lease Payments Parking revenues Parking Revenue [Member] Parking Revenue 4.45% Series O Series O Preferred Stock Series O Preferred Stock [Member] Series O Preferred Stock Name of Property [Domain] Name of Property [Domain] Adjustments to reconcile net (loss) income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Prepaid assets Increase (Decrease) in Prepaid Expense 2026 Lessee, Operating Lease, Liability, to be Paid, Year Four Income Statement [Abstract] Income Statement [Abstract] Effective Through March 2024 Effective Through March 2024 [Member] Effective Through March 2024 Additional Capital Additional Paid-in Capital [Member] Document Fiscal Period Focus Document Fiscal Period Focus NOI - consolidated Net Operating Income (Loss) Cash Basis, Consolidated Net Operating Income (Loss) Cash Basis, Consolidated (LOSS) INCOME PER COMMON SHARE - BASIC: Earnings Per Share, Basic [Abstract] Exercises in period, intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Derivative [Line Items] Derivative [Line Items] Weighted average shares outstanding, diluted (in shares) Denominator for diluted income (loss) per share - weighted average shares and assumed conversions (in shares) Weighted Average Number of Shares Outstanding, Diluted Expected volatility, minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Buildings and improvements SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Building and Improvements, Amount Expected life (years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Interest on loans receivable Interest and Fee Income, Loans and Leases 150 West 34th Street One Five Zero West 34th Street [Member] 150 West 34th Street property. Real Estate Property Ownership [Axis] Real Estate Property Ownership [Axis] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Defeasance of mortgage payable Defeasance Of Mortgage Payable Defeasance Of Mortgage Payable Carrying Amount Reported Value Measurement [Member] Percentage commissions on sale of assets over fifty million Percentage Commissions On Sale Of Assets Over Fifty Million Percentage of gross proceeds over $50,000,000 from the sale of any assets, receivable from related party. New York City Metropolitan Area New York City Metropolitan Area [Member] Domain member used to indicate facts reported for the New York Office Segment. Basis difference in carrying amount Real Estate Basis Difference, Carrying Amount Real Estate Basis Difference, Carrying Amount Vornado and Rudin KG, Vornado and Rudin Management Joint Venture [Member] KG, Vornado and Rudin Management Joint Venture Granted (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value 770 Broadway mortgage loan A770 Broadway Mortgage Loan [Member] A770 Broadway Mortgage Loan Fair Value, Schedule of Assets and Liabilities Measures on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Options exercisable, Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Preferred shares of beneficial interest: authorized shares (shares) Preferred shares of beneficial interest: authorized shares (shares) Preferred Stock, Shares Authorized Percentage of affiliated entity owned by company Percentage of Affiliated Entity Owned By Company Percentage of Alexanders Owned By Company Investment owned, balance, shares Investment Owned, Balance, Shares Increase in Percentage After Fifth Anniversary Increase in Percentage After Fifth Anniversary [Member] Increase in Percentage After Fifth Anniversary [Member] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Proceeds from borrowings Proceeds from Issuance of Long-Term Debt NET (LOSS) INCOME attributable to common shareholders / Class A unitholders Net Income (Loss) Available to Common Stockholders, Basic Not Full Value Awards Not Full Value Awards [Member] Equity Method Investments Equity Method Investments [Table Text Block] Common shares of beneficial interest: issued shares (shares) Common Stock, Shares, Issued Accrued capital expenditures included in accounts payable and accrued expenses Accrued capital expenditures included in accounts payable and accrued expenses Capital Expenditures Incurred but Not yet Paid Management fee income Equity Method Investment Development Fees Equity Method Investment Development Fees Secured Overnight Financing Rate through March 2024 Secured Overnight Financing Rate through March 2024 [Member] Secured Overnight Financing Rate through March 2024 Hotel Pennsylvania site Hotel Pennsylvania [Member] Domain member used to indicate facts reported for the continuing operations of Hotel Pennsylvania. Financial Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Rate Type [Domain] Rate Type [Domain] Rate Type [Domain] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Debt instrument, amount Debt Instrument, Face Amount Comprehensive (loss) income attributable to Vornado / Vornado Realty L.P. Comprehensive Income (Loss), Net of Tax, Attributable to Parent 100 West 33rd Street mortgage loan A100 West 33rd Street Mortgage Loan [Member] A100 West 33rd Street Mortgage Loan Asset sale commission threshold Asset Sale Commission Threshold Asset Sale Commission Threshold 888 Seventh Avenue mortgage loan A888 Seventh Avenue Mortgage Loan [Member] A888 Seventh Avenue Mortgage Loan Schedule of Segment Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Proceeds from repayments of loan receivables Proceeds from Collection of Loans Receivable Real estate fund investments Real estate investments Real Estate Fund Nondepreciable Real Estate This element represents the real estate assets related to the fund Entity Current Reporting Status Entity Current Reporting Status Real estate impairment losses Non-cash impairment loss Impairment of Real Estate Performance Conditioned AO LTIP Units Performance Conditioned AO LTIP Units [Member] Performance Conditioned AO LTIP Units [Member] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Chief Executive Officer Chief Executive Officer [Member] Impairment losses, transaction related costs and other Impairment losses and transaction related costs, net Impairment losses, transaction related costs and other Transaction Related Costs, Impairment Losses and Other Transaction Related Costs, Impairment Losses and Other Par or stated value per share Temporary Equity, Liquidation Preference Per Share Dividends per common share (usd per share) Dividends Payable, Amount Per Share Derivative [Table] Derivative [Table] Options outstanding at beginning of period (shares) Options outstanding at end of period (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number 909 Third Avenue Nine Zero Nine Third Avenue [Member] New York Office 909 Third Avenue [Member] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Percent vested, year five Share Based Compensation, Percent Vested, Year Five Share Based Compensation, Percent Vested, Year Five Schedule of Derivative Instrument Interest Rate Hedging Activities Schedule of Derivative Instrument Interest Rate Hedging Activities [Table Text Block] Schedule of Derivative Instrument Interest Rate Hedging Activities Real estate Increase In Assets Resulting From Consolidation, Real Estate, Net Increase In Assets Resulting From Consolidation, Real Estate, Net Other Stockholders' Equity, Other Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Development costs and construction in progress Payments to Develop Real Estate Assets Entities [Table] Entities [Table] Schedule of future amortization expense of intangible assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] 260 Eleventh Avenue Two Sixty Eleventh Avenue [Member] Property located at 260 11th Avenue, New York. Title of Individual [Domain] Title of Individual [Domain] Partially Owned Office Buildings/Land Partially owned office buildings [Member] Partially Owned Office Buildings Accumulated depreciation and amortization Accumulated depreciation, balance at beginning of period Accumulated depreciation, balance at end of period SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation Other, net Other Nonoperating Income (Expense) Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Long term debt Long-Term Debt Balance Sheet Location [Axis] Balance Sheet Location [Axis] Closing share price (in dollars per share) Sale of Stock, Price Per Share Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward] Joint Venture Corporate Joint Venture [Member] Threshold period to satisfy performance based condition Threshold Period to Satisfy Performance Based Condition Threshold Period to Satisfy Performance Based Condition Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Comparable FFO per Share Comparable FFO per Share [Member] Comparable FFO per Share Fee income recognized by equity method investees for building maintenance services Other Real Estate Revenue From Equity Method Investees Fee income for supervision of cleaning, engineering and security services as per agreement recognized during the period Distributions, share-based compensation Dividend, Share-Based Payment Arrangement New York New York Segment [Member] Domain member used to indicate facts reported for the New York Office Segment. Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Share-based payment awards Share-Based Payment Arrangement [Member] Other comprehensive income (loss) of nonconsolidated subsidiaries Our Share Of Partially Owned Entities Oci Adjustments This element represents the company's pro-rata share of other comprehensive income (loss) adjustments related to non-consolidated subsidiaries PENN 1 One Penn Plaza [Member] New York Office One Penn Plaza [Member] Interest Rate Maturing In September 2022 Interest Rate Maturing In September 2022 [Member] Interest Rate Maturing In September 2022 Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Component Type [Axis] Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Component Type [Axis] Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Component Type [Axis] Entity Small Business Entity Small Business Measurement Basis [Axis] Measurement Basis [Axis] Variable billings Operating Lease, Variable Lease Income Common shares/units, dividends (in dollars per share) Common Stock, Dividends, Per Share, Declared REVENUES: Revenues [Abstract] Identified intangible assets, net of accumulated amortization of $98,139 and $97,186 Total, net Finite-Lived Intangible Assets, Net Initial annual net rent Real Estate Property, Initial Annual Net Rent Real Estate Property, Initial Annual Net Rent Weighted-Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Unrecognized Compensation Expense, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Unrecognized Compensation Expense, Weighted Average Remaining Contractual Term Distributions Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Number of buildings Number of Buildings1 Number of Buildings1 Crowne Plaza Times Square Hotel Joint Venture Crowne Plaza Times Square Hotel Joint Venture [Member] Derivative asset, notional amount Derivative Asset, Notional Amount Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Redeemable Preferred Stock Redeemable Preferred Stock [Member] Taxable Reit Subsidiaries Taxable Reit Subsidiaries [Member] Taxable Reit Subsidiaries Borgata Land, Atlantic City, NJ Borgata Land [Member] Other Properties Atlantic City NJ [Member] Number of real estate properties Number of Real Estate Properties Total SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross Identified intangible liabilities (included in deferred revenue): Identified Intangible Liabilities [Abstract] Identified Intangible Liabilities [Abstract] Consolidated Entities [Axis] Consolidated Entities [Axis] Unsecured term loan, net Unsecured Debt Distributions of income from partially owned entities Distributions of income from partially owned entities Proceeds from Equity Method Investment, Distribution Redeemable Noncontrolling Interests Rollforward Redeemable Noncontrolling Interests Rollforward [Abstract] Vests in January 2027 Vests in January 2027 [Member] Vests in January 2027 Net gain from real estate investment partnership, attributable to noncontrolling interest Net Income (Loss) from Real Estate Investment Partnership, Attributable to Noncontrolling Interest Common Stock Number Of Shares Par Value And Other Disclosures Common Stock, Number of Shares, Par Value and Other Disclosure [Abstract] Debt Instrument Debt Instrument [Line Items] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract] Write-off of fully depreciated assets Write Off Of Fully Amortized And Depreciated Assets This element represents the decrease in assets due to the write off of fully depreciated assets Class of Stock [Line Items] Class of Stock [Line Items] Deferred compensation shares / units and options, shares Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Debt issuance costs Payments of Debt Issuance Costs PENN 11 mortgage loan PENN 11 Mortgage Loan [Member] PENN 11 Mortgage Loan Lease liabilities Operating Lease, Liability Additions to real estate Payments to acquire real estate Payments to Acquire Real Estate Non recourse loan, amount Non Recourse Loan, Amount Non Recourse Loan, Amount Land Land Distributions to Vornado General Partners' Capital Account, Period Distribution Amount Real estate, net Real Estate, Net, Deconsolidation Real Estate, Net, Deconsolidation All Risk And Rental Value All Risk And Rental Value [Member] Amount of all risk and rental value insurance coverage against damages to property. 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Two Term of contract Lessee, Finance Lease, Term of Contract Unobservable Quantitative Input Unobservable Quantitative Input [Abstract] New York Stock Exchange NEW YORK STOCK EXCHANGE, INC. [Member] Realized (loss) income on exited investments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Realized Gain (Loss) Included In Earnings This element represents Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Realized Gain (Loss) Included In Earnings. 3.25% D-17 Cumulative Redeemable Series D17 Cumulative Redeemable Preferred Unit [Member] Series D17 Cumulative Redeemable Preferred Unit [Member] Ordinary Income Ordinary Income [Member] Other assets Increase (Decrease) in Other Operating Assets Conversion Feature [Axis] Conversion Feature [Axis] Manhattan Manhattan [Member] NOI from partially owned entities Net Operating Income (Loss) Cash Basis, Partially Owned Entities Net Operating Income (Loss) Cash Basis, Partially Owned Entities 2026 Long-Term Debt, Maturity, Year Four Related party transaction annual fee percentage Property Management Fee, Percent Fee Hedging Designation [Axis] Hedging Designation [Axis] Auditor Location Auditor Location Organization and Business Nature of Operations [Text Block] Entity Filer Category Entity Filer Category Fair value below cost Investment Owned Unrecognized Unrealized Appreciation Value The amount of excess fair value of investments over it's cost. Operating Partnership Units Held By Third Parties Redeemable Noncontrolling Interest [Table Text Block] Schedule of Unrecognized Compensation Expense Share-Based Payment Arrangement, Nonvested Award, Cost [Table Text Block] Mortgage loans on real estate, face amount of mortgages SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages The Site The Site [Member] The Site Citadel Enterprise Americas LLC Citadel Enterprise Americas LLC [Member] Citadel Enterprise Americas LLC Share-based compensation expense Share-Based Payment Arrangement, Expense Non-Cash Information: Noncash Investing and Financing Items [Abstract] Commitments and contingencies Commitments and Contingencies Security Exchange Name Security Exchange Name Options outstanding at beginning of period (in usd per share) Options outstanding at end of period (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Impairment of real estate related to noncontrolling interest Impairment of Real Estate Related to Noncontrolling Interest Impairment of Real Estate Related to Noncontrolling Interest Identified intangible assets Increase In Assets Resulting From Consolidation, Identified Intangible Assets Increase In Assets Resulting From Consolidation, Identified Intangible Assets Unsecured Term Loan Portion Through October 2023 Unsecured Term Loan Portion Through October 2023 [Member] Unsecured Term Loan Portion Through October 2023 Weighted- Average Remaining Contractual Term Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] Fair Value, Balance Sheet Grouping, Financial Statement Captions Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Property management fee agreement price per square foot Property Management Fee Agreement Price Per Square Foot Amount per square foot received from related party as property management fee. Change in fair value of interest rate swaps and other Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Outstanding letters of credit Letters of Credit Outstanding, Amount PENN 2 Two Penn Plaza New York Office Two Penn Plaza [Member] Relative Relative [Member] Relative [Member] Revenues Revenue from Contract with Customer, Excluding Assessed Tax 4 Union Square South Four Union Square South [Member] 4 Union Square South [Member] Conversion of Series A preferred shares to common shares / Conversion of Series A preferred units to Class A units, shares Stock Issued During Period, Shares, Conversion of Convertible Securities Distributions: Distributions [Abstract] Redeemable Noncontrolling Interests Redeemable Noncontrolling Interests [Text Block] Redeemable Noncontrolling Interests [Text Block] 137 West 33rd Street One Three Seven West 33rd Street [Member] One Three Seven West 33rd Street property. Cover [Abstract] Cover [Abstract] Entity Voluntary Filers Entity Voluntary Filers Depreciation and amortization Depreciation and amortization expense Depreciation, Depletion and Amortization, Nonproduction Swapped rate Debt Instrument, Swapped Rate Debt Instrument, Swapped Rate Less accumulated depreciation and amortization Real Estate Investment Property, Accumulated Depreciation Other assets Other Assets 888 Seventh Avenue Eight Eight Eight Seventh Avenue [Member] New York Office 888 Seventh Avenue [Member] Revenue Recognition Revenue from Contract with Customer [Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Investments [Domain] Investments [Domain] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] Carrying amount of investments in partially owned entities Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Liabilities Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Liabilities Clawback payment Required Clawback Payment To Limited Partners At Liquidation Required Clawback Payment To Limited Partners At Liquidation Interest expense Interest Costs Incurred Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Total liabilities, redeemable noncontrolling interests / partnership units and equity Liabilities and Equity Amortization of Debt Issuance Costs Amortization of Debt Issuance Costs Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Working capital, net Working Capital, Net Working Capital, Net Out Performance Plan Out Performance Plan [Abstract] Present value discount Lessee, Operating Lease, Liability, Undiscounted Excess Amount Vesting [Axis] Vesting [Axis] Net (loss) income per common share (in dollars per share) Earnings Per Share, Diluted Debt Covenant [Domain] Debt Covenant [Domain] [Domain] for Debt Covenant [Axis] Award vesting period (years) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Mortgage loan Participating Mortgage Loans, Mortgage Obligations, Amount Development costs and construction in progress Development in Process Ownership percentage by parent Noncontrolling Interest, Ownership Percentage by Parent 2024 Lessee, Operating Lease, Liability, to be Paid, Year Two Thereafter Lessor, Operating Lease, Payment to be Received, after Year Five One Park Avenue mortgage loan One Park Avenue Mortgage Loan [Member] One Park Avenue Mortgage Loan Lessor, Operating Lease, Payments to be Received, Maturity Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity [Table Text Block] Facility fee, percentage Line of Credit Facility, Commitment Fee Percentage Cumulative Effect, Period of Adoption, Adjustment Cumulative Effect, Period of Adoption, Adjustment [Member] OPP Units Earned Share Based Compensation Equity Instruments Other Than Stock Options And Restricted Stock Units Earned String Share Based Compensation Equity Instruments Other Than Stock Options And Restricted Stock Units Earned String Proceeds from the issuance of preferred shares / units Proceeds from Issuance of Preferred Stock and Preference Stock Derivative asset, fair value Derivative Asset, Subject to Master Netting Arrangement, before Offset Accumulated amortization Finite Lived Intangible Liability Accumulated Amortization The accumulated amount of amortization of a major finite-lived intangible liability class. A major class is composed of intangible liabilities that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. Lessee, Operating Lease, Liability, Maturity Lessee, Operating Lease, Liability, Maturity [Table Text Block] Entity Address, Address Line One Entity Address, Address Line One Redeemable Noncontrolling Interests Redeemable Noncontrolling Interests [Policy Text Block] Redeemable Noncontrolling Interests Policy [Text Block] (Loss) income from partially owned entities Our share of net income (loss) Loss (income) from partially owned entities Income Loss From Equity Method Investments Including Fees Earned Real estate fund investments Real estate investments Real Estate Funds [Member] Deferred revenue Contract with Customer, Liability 39 East 51st Street Thirty Nine East 51st Street [Member] Thirty Nine East 51st Street Initial cost to company SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract] Unsecured revolving credit facilities Unsecured Revolving Credit Facilities [Member] Unsecured Revolving Credit Facilities [Member] Acquisition of additional 45.0% ownership interest in One Park Avenue (inclusive of $5,806 of prorations and net working capital and net of $39,370 of cash and restricted cash balances consolidated upon acquisition) Payments to Acquire Additional Interest in Subsidiaries Product and Service [Axis] Product and Service [Axis] Class of Stock [Domain] Class of Stock [Domain] Number of investments held by fund (investment) Number Of Investments Held By Fund Number Of Investments Held By Fund during the year. 537 West 26th Street Five Three Seven West 26th Street [Member] Five Three Seven West 26th Street [Member] Partially Owned Entities Equity Method Investments [Policy Text Block] Rate Derivative, Variable Interest Rate Multiemployer Plan Type [Axis] Retirement Plan Type [Axis] Tax Treatment of Dividend [Axis] Tax Treatment of Dividend [Axis] Investors Investors [Member] Investors [Member] Schedule of Debt Schedule of Long-Term Debt Instruments [Table Text Block] Redeemable Class A unit measurement adjustment Adjustments To Reflect Redeemable Class Operating Partnership Units Adjustments to reflect redeemable Class A Operating Partnership units OP Units Restricted Operating Partnership Units Plan [Member] Restricted Operating Partnership Units Plan ESG Performance Metrics ESG Performance Metrics [Member] ESG Performance Metrics Common limited partnership interest in the Operating Partnership Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest Increase in assets and liabilities resulting from the consolidation of One Park Avenue: Increase in Assets and Liabilities from Consolidation [Abstract] Increase in Assets and Liabilities from Consolidation Series K Preferred Stock Series K Preferred Stock [Member] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, by Property [Table] SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, by Property [Table] Financial Assets And Liabilities Not Measured At Fair Value Financial Assets And Liabilities Not Measured At Fair Value [Abstract] Series K cumulative redeemable preferred shares/units called for redemption, shares Series K cumulative redeemable preferred shares/units called for redemption, shares Stock Redeemed or Called During Period, Shares Multiemployer plan, period contributions Multiemployer Plan, Employer Contribution, Cost Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Buildings and improvements SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 220 Central Park South Two Two Zero Central Park South Site [Member] New York Manhattan 220 Central Park South Site [Member] Straight-lining of rents Straight Line Rent 759-771 Madison Avenue (40 East 66th Street) Residential, New York Seven Five Nine - Seven Seven One Madison Avenue [Member] Seven Five Nine - Seven Seven One Madison Avenue 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Five Effective Through August 2027 Effective Through August 2027 [Member] Effective Through August 2027 Measurement Frequency [Axis] Measurement Frequency [Axis] 330 West 34th Street Three Three Zero West 34th Street [Member] New York Office 330 West 34th Street [Member] Weighted-Average Grant-Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Name of Property [Axis] Name of Property [Axis] Full Value Awards Full Value Awards [Member] Upon redemption of redeemable Class A units, at redemption value, shares Stock Issued During Period, Shares, Conversion of Units Unearned Out-Performance Plan awards acceleration Unearned Out-Performance Plan Unearned Out-Performance Plan General and administrative General and administrative expense General and Administrative Expense Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Participating Mortgage Loan, Name [Domain] Participating Mortgage Loan, Name [Domain] 150 Spring Street One Fifty Spring Street [Member] New York Office 150 Spring Street [Member] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Affiliated Entity [Abstract] Affiliated Entity [Abstract] Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Fee and other income from related parties (in US dollars) Property Management Fee Revenue Cash Flows from Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Length of extension available (years) Length Of Extension Available The term of the extension available, in years Schedule III Real Estate and Accumulated Depreciation SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Text Block] Previously recorded unrealized loss on exited investments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Realized Gain (Loss) Included In Earnings, Previously Recorded Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Realized Gain (Loss) Included In Earnings, Previously Recorded Write off of rent receivable Write Off of Rent Receivable Write Off of Rent Receivable Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Investments in Partially Owned Entities Equity Method Investments and Joint Ventures Disclosure [Text Block] PENN 1 PENN 1 [Member] PENN 1 Total contractual operating lease billings Operating Lease, Contractual Lease Income Operating Lease, Contractual Lease Income Retail Retail Site [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Threshold level, percent Share-based Compensation Arrangement by Share-based Payment Award, Threshold Level Share-based Compensation Arrangement by Share-based Payment Award, Threshold Level Series D cumulative redeemable preferred units - 141,400 units outstanding Series D cumulative redeemable preferred, carrying amount Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount Capital Unit, Class [Domain] Capital Unit, Class [Domain] Cash proceeds from sale of real estate Proceeds from Sale of Real Estate KG KG [Member] KG Accounting Standards Update [Extensible List] Accounting Standards Update [Extensible Enumeration] Accounting Standards Update 2016-13 [Member]