Basis of Presentation and Significant Accounting Policies (Details 1) (USD $) In Thousands, unless otherwise specified
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12 Months Ended |
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Schedule Of Equity Method Investments [Line Items] |
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Acquisition and transaction related costs, and impairment losses |
$ 18,435vno_ImpairmentAndOtherLosses |
$ 24,857vno_ImpairmentAndOtherLosses |
$ 17,386vno_ImpairmentAndOtherLosses |
Significant Policies Other Details [Abstract] |
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Tenant and other receivables, allowance for doubtful accounts (in US dollars) |
12,210us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables |
14,519us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables |
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Receivables Arising From Straight Lining Of Rents Allowance |
3,188vno_ReceivablesArisingFromStraightLiningOfRentsAllowance |
4,355vno_ReceivablesArisingFromStraightLiningOfRentsAllowance |
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Impairment Loss [Member] |
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Schedule Of Equity Method Investments [Line Items] |
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Acquisition and transaction related costs, and impairment losses |
0vno_ImpairmentAndOtherLosses / vno_ImpairmentOfAssetAxis = vno_ImpairmentLossMember |
0vno_ImpairmentAndOtherLosses / vno_ImpairmentOfAssetAxis = vno_ImpairmentLossMember |
6,138vno_ImpairmentAndOtherLosses / vno_ImpairmentOfAssetAxis = vno_ImpairmentLossMember |
Acquisitions related costs [Member] |
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Schedule Of Equity Method Investments [Line Items] |
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Acquisition and transaction related costs, and impairment losses |
18,435vno_ImpairmentAndOtherLosses / vno_ImpairmentOfAssetAxis = us-gaap_AcquisitionRelatedCostsMember |
24,857vno_ImpairmentAndOtherLosses / vno_ImpairmentOfAssetAxis = us-gaap_AcquisitionRelatedCostsMember |
11,248vno_ImpairmentAndOtherLosses / vno_ImpairmentOfAssetAxis = us-gaap_AcquisitionRelatedCostsMember |
Acquisitions related costs [Member] | New York 655 Fifth Avenue [Member] |
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Schedule Of Equity Method Investments [Line Items] |
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Penalty on early repayment of loan |
10,949us-gaap_PaymentsOfDebtExtinguishmentCosts / vno_ImpairmentOfAssetAxis = us-gaap_AcquisitionRelatedCostsMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = vno_NewYork655FifthAvenueMember |
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Equity Method Investments [Member] |
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Schedule Of Equity Method Investments [Line Items] |
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Other than Temporary Impairment Losses Investments |
85,459us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_EquityMethodInvestmentsMember |
281,098us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_EquityMethodInvestmentsMember |
44,936us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = us-gaap_EquityMethodInvestmentsMember |
Toys R Us [Member] | Impairment Loss [Member] |
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Schedule Of Equity Method Investments [Line Items] |
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Other than Temporary Impairment Losses Investments |
$ 75,196us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment / vno_ImpairmentOfAssetAxis = vno_ImpairmentLossMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = vno_ToysRUsMember |
$ 240,757us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment / vno_ImpairmentOfAssetAxis = vno_ImpairmentLossMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = vno_ToysRUsMember |
$ 40,000us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment / vno_ImpairmentOfAssetAxis = vno_ImpairmentLossMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = vno_ToysRUsMember |