Consolidated Statements of Income - Equity Method Investee Name [Domain] - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
REVENUES:
Property rentals	$ 514,843	$ 478,490	$ 1,015,117	$ 945,630
Tenant expense reimbursements	62,215	55,110	129,136	114,411
Fee and other income	39,230	40,811	78,837	76,751
Total revenues	616,288	574,411	1,223,090	1,136,792
EXPENSES:
Operating	242,690	230,398	497,183	466,959
Depreciation and amortization	136,957	113,200	261,079	244,992
General and administrative	39,189	40,478	97,681	87,980
Acquisition and transaction related costs	4,061	1,067	6,042	2,352
Total expenses	422,897	385,143	861,985	802,283
Operating income	193,391	189,268	361,105	334,509
Loss from partially owned entities	(5,231)	(53,742)	(7,636)	(51,763)
Income from real estate fund investments	26,368	100,110	50,457	118,258
Interest and other investment income, net	5,666	9,396	16,458	21,246
Interest and debt expense	(92,092)	(103,913)	(183,766)	(200,225)
Net gain on disposition of wholly owned and partially owned assets	0	905	1,860	10,540
Income before income taxes	128,102	142,024	238,478	232,565
Income tax benefit (expense)	88,072	(3,280)	87,101	(4,131)
Income from continuing operations	216,174	138,744	325,579	228,434
(Loss) income from discontinued operations	(774)	26,943	15,067	35,409
Net income	215,400	165,687	340,646	263,843
Less net income attributable to noncontrolling interests in:
Consolidated subsidiaries	(19,186)	(63,975)	(35,068)	(75,554)
Operating Partnership	(10,198)	(4,704)	(15,485)	(8,564)
Net income attributable to Vornado	186,016	97,008	290,093	179,725
Preferred share dividends	(20,365)	(20,366)	(39,849)	(40,734)
NET INCOME attributable to common shareholders	$ 165,651	$ 76,642	$ 250,244	$ 138,991
INCOME PER COMMON SHARE - BASIC:
Income from continuing operations, net (in dollars per share)	$ 0.88	$ 0.27	$ 1.25	$ 0.56
Income from discontinued operations, net (in dollars per share)	0.00	0.14	0.08	0.18
Net income per common share (in dollars per share)	$ 0.88	$ 0.41	$ 1.33	$ 0.74
Weighted average shares outstanding	188,365	187,527	188,183	187,418
INCOME (LOSS) PER COMMON SHARE - DILUTED:
Income from continuing operations, net (in dollars per share)	$ 0.88	$ 0.27	$ 1.25	$ 0.56
(Loss) income from discontinued operations, net (in dollars per share)	(0.01)	0.14	0.07	0.18
Net income per common share (in dollars per share)	$ 0.87	$ 0.41	$ 1.32	$ 0.74
Weighted average shares outstanding	189,600	188,617	189,775	188,431
DIVIDENDS PER COMMON SHARE (in dollars per share)	$ 0.63	$ 0.73	$ 1.26	$ 1.46