CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 50,207	$ 15,287	$ 84,578	$ 17,101
Other comprehensive income (loss):
Change in unrealized gain (loss) on interest rate swaps, net	1,466	(3,993)	(2,630)	(4,505)
Other comprehensive income (loss)	1,466	(3,993)	(2,630)	(4,505)
Comprehensive income	51,673	11,294	81,948	12,596
Comprehensive income attributable to noncontrolling interests	(875)	(837)	(1,741)	(1,765)
Comprehensive income attributable to Lexington Realty Trust shareholders	$ 50,798	$ 10,457	$ 80,207	$ 10,831