Area of a real estate property.

No definition available.

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Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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Balance Type:	na
Period Type:	instant

- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after accumulated amortization, of right-of-use asset from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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Period Type:	duration

- Definition

Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Term of lessor's operating lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=124258985&loc=SL77919359-209981

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of capital contributed by other unit holders.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-Subparagraph (SAB TOPIC 4.F)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187171-122770

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Commitment To Fund Additional Capital To Partially Owned Entities

+ References

No definition available.

+ Details

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Namespace Prefix:	vno_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Guarantees And Master Leases

+ References

No definition available.

+ Details

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Namespace Prefix:	vno_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Insurance deductible

+ References

No definition available.

+ Details

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Namespace Prefix:	vno_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Insurance deductible, percentage of balance of a covered loss

+ References

No definition available.

+ Details

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Namespace Prefix:	vno_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Insurance Limit Per Occurrence

+ References

No definition available.

+ Details

Name:	vno_InsuranceLimitPerOccurrence
Namespace Prefix:	vno_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Insurance limit per property.

+ References

No definition available.

+ Details

Name:	vno_InsuranceLimitPerProperty
Namespace Prefix:	vno_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Insurance maximum coverage limit in aggregate.

+ References

No definition available.

+ Details

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Namespace Prefix:	vno_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The term of the extension available, in years

+ References

No definition available.

+ Details

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Namespace Prefix:	vno_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Vornado deductible, percentage of property value

+ References

No definition available.

+ Details

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Namespace Prefix:	vno_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Required Clawback Payment To Limited Partners At Liquidation

+ References

No definition available.

+ Details

Name:	vno_RequiredClawbackPaymentToLimitedPartnersAtLiquidation
Namespace Prefix:	vno_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_CorporateJointVentureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=vno_FarleyOfficeandRetailBuildingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srt_AffiliatedEntityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=vno_PENN1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=vno_ThreeFourFIveMontgomeryStreetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=vno_SubsidiaryofRegusPLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=vno_RegusPLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=vno_UnsecuredRevolvingCreditFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	vno_InsuranceCoverageTypeNameAxis=us-gaap_GeneralLiabilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	vno_InsuranceCoverageTypeNameAxis=vno_DiseaseCoverageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	vno_InsuranceCoverageTypeNameAxis=vno_AllRiskAndRentalValueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	vno_InsuranceCoverageTypeNameAxis=vno_EarthquakeCaliforniaPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	vno_InsuranceCoverageTypeNameAxis=vno_TerrorismActsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	vno_InsuranceCoverageTypeNameAxis=vno_NonCertifiedActsofTerrorismMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Commitments and Contingencies (Narrative) (Details) ft² in Thousands	1 Months Ended	9 Months Ended
	Jan. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2020 USD ($)	Jul. 31, 2018 USD ($) ft²
Other Commitments
Guarantees and master leases		$ 1,593,000,000
Fund clawback payment		24,990,000
Commitment to fund additional capital to partially owned entities		10,300,000
Construction commitment		$ 492,000,000
Joint Venture \| Farley Office and Retail
Other Commitments
Equity method ownership percentage		95.00%
Capital contributions		$ 92,400,000	$ 92,400,000
Affiliated Entity \| Farley Office and Retail
Other Commitments
Equity method ownership percentage		5.00%
PENN 1
Other Commitments
Term of contract	25 years
Length of extension available (years)	25 years
Finance lease liability	$ 350,000,000
Finance lease, right-of-use asset	$ 350,000,000
345 Montgomery Street \| Subsidiary of Regus PLC
Other Commitments
Square footage of real estate property (in sqft) \| ft²				78
Lessor, operating lease, lease not yet commenced, term of contract				15 years
Regus PLC \| 345 Montgomery Street
Other Commitments
Guarantor obligations, maximum exposure, undiscounted				$ 90,000,000
Unsecured Revolving Credit Facilities
Other Commitments
Outstanding letters of credit		$ 15,273,000
General Liability
Insurance
Insurance limit per occurrence		300,000,000
Insurance limit per property		300,000,000
Disease Coverage
Insurance
Insurance limit per property		250,000,000
All Risk And Rental Value
Insurance
Insurance limit per occurrence		2,000,000,000
Earthquake California Properties
Insurance
Insurance limit per occurrence		350,000,000
Insurance maximum coverage limit in aggregate		$ 350,000,000
Vornado deductible, percentage of property value		5.00%
Terrorism Acts
Insurance
Insurance limit per occurrence		$ 6,000,000,000
Insurance maximum coverage limit in aggregate		6,000,000,000
Non-Certified Acts of Terrorism
Insurance
Insurance maximum coverage limit in aggregate		1,200,000,000
NBCR Acts
Insurance
Insurance limit per occurrence		5,000,000,000
Insurance maximum coverage limit in aggregate		5,000,000,000
NBCR Acts \| PPIC
Insurance
Insurance deductible		$ 1,799,727
Insurance deductible percentage of balance of covered loss		20.00%