(Loss) Income Per Class A Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Per Class A Unit [Abstract]
(Loss) income from continuing operations, net of income attributable to noncontrolling interests	$ (102,002)	$ 93,185
Income from discontinued operations	716	16,179
Net (loss) income attributable to Vornado Realty L.P.	(101,286)	109,364
Preferred unit distributions	(20,412)	(19,496)
Net (loss) income attributable to Class A unitholders	(121,698)	89,868
Earnings allocated to unvested participating securities	(772)	(749)
Numerator for basic and diluted (loss) income per Class A unit	$ (122,470)	$ 89,119
Denominator for basic (loss) income per Class A unit - weighted average units	200,072	198,675
Effect of dilutive securities - Vornado stock options and restricted unit awards	0	2,074
Denominator for diluted (loss) income per Class A unit - weighted average units and assumed conversions	200,072	200,749
(LOSS) INCOME PER CLASS A UNIT - BASIC:
(Loss) income from continuing operations, net (in dollars per unit)	$ (0.61)	$ 0.37
Income from discontinued operations, net (in dollars per unit)	0	0.08
Net (loss) income per Class A unit (in dollars per unit)	(0.61)	0.45
(LOSS) INCOME PER CLASS A UNIT - DILUTED:
(Loss) income from continuing operations, net (in dollars per unit)	(0.61)	0.36
Income from discontinued operations, net (in dollars per unit)	0	0.08
Net (loss) income per Class A unit (in dollars per unit)	$ (0.61)	$ 0.44