CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 186,391	$ 285,293	$ 230,906
Other comprehensive income (loss):
Change in unrealized loss on interest rate swaps, net	(16,035)	(2,004)
Change in unrealized loss on interest rate swaps, net			(989)
Other comprehensive loss	(16,035)	(2,004)	(989)
Comprehensive income	170,356	283,289	229,917
Comprehensive income attributable to noncontrolling interests	(3,089)	(5,383)	(3,491)
Comprehensive income attributable to Lexington Realty Trust shareholders	$ 167,267	$ 277,906	$ 226,426