Stock-based Compensation (Performance Conditioned AO LTIP Units Vornado Stock Options) (Details)	12 Months Ended
Dec. 31, 2022 USD ($) $ / shares shares
Vornado stock options
Shares
Options outstanding at beginning of period (shares) \| shares	191,933
Exercised (shares) \| shares	(197)
Forfeited (shares) \| shares	(1,413)
Expired (shares) \| shares	(13,618)
Options outstanding at end of period (shares) \| shares	176,705
Option exercisable at end of period (shares) \| shares	140,031
Weighted- Average Exercise Price
Options outstanding at beginning of period (in usd per share) \| $ / shares	$ 65.27
Exercised (in usd per share) \| $ / shares	36.72
Forfeited (in usd per share) \| $ / shares	53.42
Expired (in usd per share) \| $ / shares	65.86
Options outstanding at end of period (in usd per share) \| $ / shares	65.35
Options exercisable at end of period (in usd per share) \| $ / shares	$ 68.25
Weighted- Average Remaining Contractual Term
Options outstanding, Weighted Average Remaining Contractual Term	4 years 11 months 26 days
Options exercisable, Weighted Average Remaining Contractual Term	4 years 5 months 23 days
Aggregate Intrinsic Value
Options outstanding, Aggregate Intrinsic Value \| $	$ 0
Options exercisable, Aggregate Intrinsic Value \| $	$ 0
AO LTIP Units
Shares
Options outstanding at beginning of period (shares) \| shares	567,739
Forfeited (shares) \| shares	(886)
Expired (shares) \| shares	(1,189)
Options outstanding at end of period (shares) \| shares	565,664
Option exercisable at end of period (shares) \| shares	437,372
Weighted- Average Exercise Price
Options outstanding at beginning of period (in usd per share) \| $ / shares	$ 59.91
Forfeited (in usd per share) \| $ / shares	54.16
Expired (in usd per share) \| $ / shares	56.29
Options outstanding at end of period (in usd per share) \| $ / shares	59.93
Options exercisable at end of period (in usd per share) \| $ / shares	$ 61.39
Weighted- Average Remaining Contractual Term
Options outstanding, Weighted Average Remaining Contractual Term	6 years 3 months 14 days
Options exercisable, Weighted Average Remaining Contractual Term	6 years 1 month 13 days
Aggregate Intrinsic Value
Options outstanding, Aggregate Intrinsic Value \| $	$ 0
Options exercisable, Aggregate Intrinsic Value \| $	$ 0

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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