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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The period of time during which the performance of the stock will be evaluated to calculate the earning of the stock based awards.

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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).

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Share-based Compensation Arrangement by Share-based Payment Award, Percentage Breakdown

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Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage Reduction Threshold

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The aggregate notional amount of the out performance plan.

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Share Based Compensation, Percent Vested, Year Four

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Share Based Compensation, Percent Vested, Year Three

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Stock-based Compensation (LTPP Units & OPP Units) (Narrative) (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 11, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
2023 LTPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant-date fair value		$ 9,491	$ 7,847
Share-based compensation expense		$ 4,670	$ 4,033
OPP Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		4 years
Vornado stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		4 years
Out Performance Plan 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant-date fair value				$ 9,950
Share-based compensation expense				6,140
Out of performance plan notional amount				$ 30,000
Operational \| 2023 LTPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage breakdown of awards	50.00%
Operational \| 2023 LTPP \| Comparable FFO per Share
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage breakdown of awards	75.00%
Operational \| 2023 LTPP \| ESG Performance Metrics
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage breakdown of awards	25.00%
Relative \| 2023 LTPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage breakdown of awards	50.00%
Percentage reduction threshold	30.00%
Duration of performance measurement period	3 years
Relative \| 2023 LTPP \| Northeast Peer Group Custom Index
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage reduction threshold	50.00%
Relative \| 2023 LTPP \| Dow Jones U.S. Real Estate Office Index
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage reduction threshold	50.00%
Absolute \| 2023 LTPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage reduction threshold	30.00%
Award requisite service period	1 year
Absolute \| 2023 LTPP \| Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period	3 years
Absolute \| 2023 LTPP \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent vested, year three	50.00%
Percent vested, year four	50.00%