CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 42,177	$ 5,155	$ 59,278	$ 10,864
Other comprehensive income (loss):
Change in unrealized gain (loss) on interest rate swaps, net	3,371	(1,613)	(1,134)	8,523
Other comprehensive income (loss)	3,371	(1,613)	(1,134)	8,523
Comprehensive income	45,548	3,542	58,144	19,387
Comprehensive income attributable to noncontrolling interests	(1,772)	(460)	(3,537)	(2,057)
Comprehensive income attributable to Lexington Realty Trust shareholders	$ 43,776	$ 3,082	$ 54,607	$ 17,330