CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (5,200)	$ 42,177	$ 79,378	$ 59,278
Other comprehensive income (loss):
Change in unrealized gain (loss) on interest rate swaps, net	(3,990)	3,371	(6,620)	(1,134)
Other comprehensive income (loss)	(3,990)	3,371	(6,620)	(1,134)
Comprehensive income (loss)	(9,190)	45,548	72,758	58,144
Comprehensive income attributable to noncontrolling interests	(784)	(1,772)	(2,525)	(3,537)
Comprehensive income (loss) attributable to Lexington Realty Trust shareholders	$ (9,974)	$ 43,776	$ 70,233	$ 54,607