Income Per Class A Unit (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Per Class A Unit [Abstract]
Income from continuing operations, net of income attributable to noncontrolling interests in consolidated subsidiaries	$ 99,560	$ 98,108	$ 184,246	$ 169,082
Income from discontinued operations, net of income attributable to noncontrolling interests in consolidated subsidiaries	2,152	69,283	4,043	275,950
Net income attributable to Vornado Realty L.P.	101,712	167,391	188,289	445,032
Preferred unit distributions	(20,379)	(20,716)	(40,759)	(43,204)
Preferred unit redemptions	0	8,100	0	(1,130)
Net income attributable to Class A unitholders	81,333	154,775	147,530	400,698
Earnings allocated to unvested participating securities	(769)	(705)	(1,667)	(1,700)
Numerator for basic income per Class A unit	80,564	154,070	145,863	398,998
Convertible preferred unit distributions	0	27	0	0
Numerator for diluted income per Class A unit	$ 80,564	$ 154,097	$ 145,863	$ 398,998
Denominator for basic income per Class A unit - weighted average units (in units)	198,232	197,569	198,075	197,466
Vornado stock options and restricted unit awards (in units)	1,514	1,049	1,475	1,056
Convertible preferred units (in units)	0	47	0	0
Denominator for diluted income per Class A unit - weighted average units and assumed conversions (in units)	199,746	198,665	199,550	198,522
INCOME PER CLASS A UNIT - BASIC:
Income from continuing operations, net (in dollars per unit)	$ 0.40	$ 0.43	$ 0.72	$ 0.62
Income from discontinued operations, net (in dollars per unit)	$ 0.01	$ 0.35	$ 0.02	$ 1.40
Net income per Class A unit (in dollars per unit)	$ 0.41	$ 0.78	$ 0.74	$ 2.02
INCOME PER CLASS A UNIT - DILUTED:
Income from continuing operations, net (in dollars per unit)	$ 0.39	$ 0.43	$ 0.71	$ 0.62
Income from discontinued operations, net (in dollars per unit)	$ 0.01	$ 0.35	$ 0.02	$ 1.39
Net income per Class A unit (in dollars per unit)	$ 0.40	$ 0.78	$ 0.73	$ 2.01