Income Per Share/Income Per Class A Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net income attributable to Vornado/Vornado Realty L.P.	$ 68,375	$ 23,298	$ 150,978	$ 131,252
Preferred share dividends / unit distributions	(15,529)	(15,529)	(46,587)	(46,587)
NET INCOME attributable to common shareholders / Class A unitholders	52,846	7,769	104,391	84,665
Earnings allocated to unvested participating securities	(1)	(4)	(2)	(14)
Numerator for basic income per share	52,845	7,765	104,389	84,651
Impact of assumed conversion of dilutive convertible securities	350	0	1,050	(243)
Numerator for diluted income per share / Class A unit	$ 53,195	$ 7,765	$ 105,439	$ 84,408
Denominator:
Denominator for basic income per share - weighted average shares (in shares)	190,364	191,793	191,228	191,756
Denominator for diluted income per share - weighted average shares and assumed conversions (in shares)	192,921	192,018	193,845	192,042
INCOME PER COMMON SHARE - BASIC:
Net income per common share (in dollars per share)	$ 0.28	$ 0.04	$ 0.55	$ 0.44
INCOME PER COMMON SHARE - DILUTED:
Net income per common share (in dollars per share)	$ 0.28	$ 0.04	$ 0.54	$ 0.44
INCOME PER CLASS A UNIT - DILUTED:
Weighted average common share / class A unit equivalents of excluded dilutive securities due to anti-dilutive effect (in shares)	15,701	15,983	15,169	15,836
Share-based payment awards
Denominator:
Effect of dilutive securities	445	225	163	266
Convertible securities
Denominator:
Effect of dilutive securities	2,112	0	2,454	20
Vornado Realty L.P.
Numerator:
Net income attributable to Vornado/Vornado Realty L.P.	$ 73,111	$ 23,904	$ 159,751	$ 137,634
Preferred share dividends / unit distributions	(15,558)	(15,558)	(46,673)	(46,673)
NET INCOME attributable to common shareholders / Class A unitholders	57,553	8,346	113,078	90,961
Earnings allocated to unvested participating securities	(747)	(498)	(594)	(1,719)
Numerator for basic income per share	56,806	7,848	112,484	89,242
Impact of assumed conversion of dilutive convertible securities	350	0	500	(243)
Numerator for diluted income per share / Class A unit	$ 57,156	$ 7,848	$ 112,984	$ 88,999
Denominator:
Denominator for basic income per Class A unit - weighted average units and assumed conversions	204,628	205,410	205,268	205,271
Denominator for diluted income per Class A unit – weighted average units and assumed conversions (in shares)	207,185	205,912	207,885	205,924
INCOME PER CLASS A UNIT - BASIC:
Net income per Class A unit (in dollars per unit)	$ 0.28	$ 0.04	$ 0.55	$ 0.43
INCOME PER CLASS A UNIT - DILUTED:
Net income per Class A unit (in dollars per unit)	$ 0.28	$ 0.04	$ 0.54	$ 0.43
Weighted average common share / class A unit equivalents of excluded dilutive securities due to anti-dilutive effect (in shares)	3,034	2,089	1,819	1,954
Vornado Realty L.P. | Share-based payment awards
Denominator:
Effect of dilutive securities	445	502	163	633
Vornado Realty L.P. | Convertible securities
Denominator:
Effect of dilutive securities	2,112	0	2,454	20