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Dispositions (Narratives) (Details) (USD $)
 12 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Feb. 24, 2014
Jul. 08, 2014
sqft
Mar. 02, 2014
sqft
Jan. 24, 2013
Apr. 15, 2013
Sep. 23, 2013
Nov. 07, 2012
Properties
sqft
Jul. 26, 2012
sqft
Jan. 06, 2012
sqft
Jun. 22, 2012
sqft
Dec. 31, 2012
sqft
Dec. 18, 2014
sqft
Dec. 17, 2013
sqft
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Net gains on sale of real estate $ 507,192,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations $ 414,502,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations $ 245,799,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations                          
Gain on sale of Canadian Trade Shows 0us-gaap_GainLossOnDispositionOfIntangibleAssets 0us-gaap_GainLossOnDispositionOfIntangibleAssets 31,105,000us-gaap_GainLossOnDispositionOfIntangibleAssets                          
Impairment Losses 26,518,000us-gaap_AssetImpairmentCharges 37,170,000us-gaap_AssetImpairmentCharges 133,977,000us-gaap_AssetImpairmentCharges                          
Seller Financing Related To Property Sales 0vno_SellerFinancingRelatedToPropertySales 0vno_SellerFinancingRelatedToPropertySales 35,000,000vno_SellerFinancingRelatedToPropertySales                          
Retail Segment Strip Shopping Centers [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gross proceeds from the sale of real estate 66,410,000vno_GrossProceedsFromSaleOfRealEstate
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		                              
Net gains on sale of real estate 22,500,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		                              
Number Of Real Estate Properties Sold 6vno_NumberOfRealEstatePropertiesSold
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		                              
Number Of Real Estate Properties 22us-gaap_NumberOfRealEstateProperties
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		                              
Canadian Trade Shows [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gain on sale of Canadian Trade Shows 0us-gaap_GainLossOnDispositionOfIntangibleAssets
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_CanadianTradeShowsMember		 0us-gaap_GainLossOnDispositionOfIntangibleAssets
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_CanadianTradeShowsMember		 19,657,000us-gaap_GainLossOnDispositionOfIntangibleAssets
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_CanadianTradeShowsMember		                          
Income tax on gain on sale     11,448,000vno_IncomeTaxOnGainOnSale
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_CanadianTradeShowsMember		                          
Retail Properties Segment [Member] | Retail Segment Strip Shopping Centers [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Sale price of real estate   82,300,000us-gaap_ProceedsFromSaleOfRealEstate
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		 157,000,000us-gaap_ProceedsFromSaleOfRealEstate
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		                          
Net gains on sale of real estate   7,851,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		 22,266,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		                          
Number Of Real Estate Properties Sold   12vno_NumberOfRealEstatePropertiesSold
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		 12vno_NumberOfRealEstatePropertiesSold
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		                          
Retail Properties Segment [Member] | Retail NY Hicksville (Broadway Mall) [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gross proceeds from the sale of real estate       94,000,000vno_GrossProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailNyHicksvilleBroadwayMallMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember		                        
Net proceeds from the sale of real estate       92,174,000vno_NetProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailNyHicksvilleBroadwayMallMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember		                        
Retail Properties Segment [Member] | Retail CA Los Angeles Beverly Connection [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gross proceeds from the sale of real estate         260,000,000vno_GrossProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailCaLosAngelesBeverlyConnectionMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember		                      
Square Footage Of Real Estate Property Sold         335,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailCaLosAngelesBeverlyConnectionMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember		                      
Sale price of real estate         239,000,000us-gaap_ProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailCaLosAngelesBeverlyConnectionMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember		                      
Mortgage loan receivable         21,000,000us-gaap_LoansReceivableCommercialMortgage
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailCaLosAngelesBeverlyConnectionMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember		                      
Mortgage loan receivable maturity tenure         10 years                      
Net gains on sale of real estate         44,155,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailCaLosAngelesBeverlyConnectionMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember		                      
Retail Properties Segment [Member] | Retail Springfield Mall [Member] | Pennsylevenia Real Estate Investment Trust [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gross proceeds from the sale of real estate           465,000,000vno_GrossProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailSpringfieldMallMember
/ dei_LegalEntityAxis
= vno_PennsyleveniaRealEstateInvestmentTrustMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember		                    
Square Footage Of Real Estate Property Sold           1,350,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailSpringfieldMallMember
/ dei_LegalEntityAxis
= vno_PennsyleveniaRealEstateInvestmentTrustMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember		                    
Sale price of real estate           340,000,000us-gaap_ProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailSpringfieldMallMember
/ dei_LegalEntityAxis
= vno_PennsyleveniaRealEstateInvestmentTrustMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember		                    
Operating Partnership Units Value Received From Buyer           125,000,000vno_OperatingPartnershipUnitsValueReceivedFromBuyer
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailSpringfieldMallMember
/ dei_LegalEntityAxis
= vno_PennsyleveniaRealEstateInvestmentTrustMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember		                    
Impairment Losses           20,000,000us-gaap_AssetImpairmentCharges
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailSpringfieldMallMember
/ dei_LegalEntityAxis
= vno_PennsyleveniaRealEstateInvestmentTrustMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember		                    
Retail Properties Segment [Member] | Green Acres Mall [Member] | Retail Segment Regional Malls [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gross proceeds from the sale of real estate             500,000,000vno_GrossProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailGreenAcresMallMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentRegionalMallsMember		                  
Net proceeds from the sale of real estate             185,000,000vno_NetProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailGreenAcresMallMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentRegionalMallsMember		                  
Net gains on sale of real estate             202,275,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailGreenAcresMallMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentRegionalMallsMember		                  
Retail Properties Segment [Member] | Plant [Member] | Retail Segment Strip Shopping Centers [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gross proceeds from the sale of real estate               203,000,000vno_GrossProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailSanJoseStripCenterMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		                
Net proceeds from the sale of real estate               98,000,000vno_NetProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailSanJoseStripCenterMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		                
Net gains on sale of real estate               32,169,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_RetailSanJoseStripCenterMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		                
Retail Properties Segment [Member] | Gallery At Market Street [Member] | Retail Segment Strip Shopping Centers [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gross proceeds from the sale of real estate               60,000,000vno_GrossProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_GalleryAtMarketStreetMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		                
Net proceeds from the sale of real estate               58,000,000vno_NetProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_GalleryAtMarketStreetMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		                
Net gains on sale of real estate               33,058,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_GalleryAtMarketStreetMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		                
Retail Properties Segment [Member] | Tampa Florida [Member] | Retail Segment Strip Shopping Centers [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gross proceeds from the sale of real estate                 45,000,000vno_GrossProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_TampaFloridaMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		              
Retail Properties Segment [Member] | Tampa Florida [Member] | Retail Segment Strip Shopping Centers [Member] | Vornado Realty Trust [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gross proceeds from the sale of real estate                 33,750,000vno_GrossProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_TampaFloridaMember
/ dei_LegalEntityAxis
= vno_VornadoRealtyTrustMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		              
Net proceeds from the sale of real estate                 20,810,000vno_NetProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_TampaFloridaMember
/ dei_LegalEntityAxis
= vno_VornadoRealtyTrustMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		              
Net gains on sale of real estate                 8,728,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_TampaFloridaMember
/ dei_LegalEntityAxis
= vno_VornadoRealtyTrustMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		              
Sale Of Ownership Interest Percent                 75.00%vno_SaleOfOwnershipInterestPercent
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_TampaFloridaMember
/ dei_LegalEntityAxis
= vno_VornadoRealtyTrustMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_RetailPropertiesSegmentMember
/ us-gaap_SubsegmentsAxis
= vno_RetailSegmentStripShoppingCentersMember		              
Washington DC Segment [Member] | Reston Executive [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gross proceeds from the sale of real estate                   126,250,000vno_GrossProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_WashingtonDcOfficeRestonExecutiveIIiAndIiiMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_WashingtonDcSegmentMember		            
Square Footage Of Real Estate Property Sold                   494,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_WashingtonDcOfficeRestonExecutiveIIiAndIiiMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_WashingtonDcSegmentMember		            
Net gains on sale of real estate                   36,746,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_WashingtonDcOfficeRestonExecutiveIIiAndIiiMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_WashingtonDcSegmentMember		            
Number Of Real Estate Properties Sold                   3vno_NumberOfRealEstatePropertiesSold
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_WashingtonDcOfficeRestonExecutiveIIiAndIiiMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_WashingtonDcSegmentMember		            
Washington DC Segment [Member] | 409 Third Street SW [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Square Footage Of Real Estate Property Sold                     409,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_WashingtonOfficeCenterMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_WashingtonDcSegmentMember		          
Sale price of real estate                     200,000,000us-gaap_ProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_WashingtonOfficeCenterMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_WashingtonDcSegmentMember		          
Net gains on sale of real estate                     126,621,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_WashingtonOfficeCenterMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_WashingtonDcSegmentMember		          
Merchandise Mart Segment [Member] | West Mart Center 350 [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Square Footage Of Real Estate Property Sold                       1,200,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_WestMartCenter350Member
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		        
Sale price of real estate                       228,000,000us-gaap_ProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_WestMartCenter350Member
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		        
Net gains on sale of real estate                       54,911,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_WestMartCenter350Member
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		        
Merchandise Mart Segment [Member] | LA Mart [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gross proceeds from the sale of real estate                         53,000,000vno_GrossProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_LaMartMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		      
Square Footage Of Real Estate Property Sold                         784,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_LaMartMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		      
Sale price of real estate                         18,000,000us-gaap_ProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_LaMartMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		      
Duration Of Seller Financing Rate                         9 months      
Seller financing rate                         6.00%vno_SellerFinancingRate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_LaMartMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		      
Seller Financing Related To Property Sales                         35,000,000vno_SellerFinancingRelatedToPropertySales
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_LaMartMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		      
Merchandise Mart Segment [Member] | Washington Design Center and Canadian Trade Shows [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Sale price of real estate                     103,000,000us-gaap_ProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_WashingtonDesignCenterAndCanadianTradeShowsMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		          
Merchandise Mart Segment [Member] | Washington Design Center [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Square Footage Of Real Estate Property Sold                     393,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_MerchandiseMartWashingtonDesignCenterMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		          
Merchandise Mart Segment [Member] | Canadian Trade Shows [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gain on sale of Canadian Trade Shows                     19,657,000us-gaap_GainLossOnDispositionOfIntangibleAssets
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_CanadianTradeShowsMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		          
Merchandise Mart Segment [Member] | Boston Design Center [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Square Footage Of Real Estate Property Sold     554,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_MerchandiseMartBostonDesignCenterMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		                     554,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_MerchandiseMartBostonDesignCenterMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		    
Sale price of real estate                           72,400,000us-gaap_ProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_MerchandiseMartBostonDesignCenterMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		    
Net gains on sale of real estate                           5,252,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_MerchandiseMartBostonDesignCenterMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_MerchandiseMartSegmentMember		    
New York Segment [Member] | New York Office 1740 Broadway [Member] | Office Building [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gross proceeds from the sale of real estate                             605,000,000vno_GrossProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_NewYorkOffice1740BroadwayMember
/ us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis
= us-gaap_OfficeBuildingMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_NewYorkSegmentMember		  
Net proceeds from the sale of real estate                             580,000,000vno_NetProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_NewYorkOffice1740BroadwayMember
/ us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis
= us-gaap_OfficeBuildingMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_NewYorkSegmentMember		  
Square Footage Of Real Estate Property Sold                             601,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_NewYorkOffice1740BroadwayMember
/ us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis
= us-gaap_OfficeBuildingMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_NewYorkSegmentMember		  
Net gains on sale of real estate                             441,000,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_NewYorkOffice1740BroadwayMember
/ us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis
= us-gaap_OfficeBuildingMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_NewYorkSegmentMember		  
Income tax on gain on sale                             484,000,000vno_IncomeTaxOnGainOnSale
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_NewYorkOffice1740BroadwayMember
/ us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis
= us-gaap_OfficeBuildingMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_NewYorkSegmentMember		  
New York Segment [Member] | New York Office 866 UN Plaza [Member]                                
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]                                
Gross proceeds from the sale of real estate                               200,000,000vno_GrossProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_NewYorkOffice866UnPlazaMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_NewYorkSegmentMember
Net proceeds from the sale of real estate                               146,439,000vno_NetProceedsFromSaleOfRealEstate
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_NewYorkOffice866UnPlazaMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_NewYorkSegmentMember
Square Footage Of Real Estate Property Sold                               360,000us-gaap_AreaOfRealEstateProperty
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_NewYorkOffice866UnPlazaMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_NewYorkSegmentMember
Net gains on sale of real estate                               $ 127,512,000us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= vno_NewYorkOffice866UnPlazaMember
/ us-gaap_StatementBusinessSegmentsAxis
= vno_NewYorkSegmentMember