CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) (UNITED DOMINION REALTY, L.P.) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income/(loss)	$ 199,579	$ 221,542	$ 132,655
Other comprehensive income/(loss), including portion attributable to noncontrolling interests:
Unrealized holding gain/(loss)	(8,437)	4,806	1,802
(Gain)/loss reclassified into earnings from other comprehensive income/(loss)	(2,770)	(1,948)	1,407
Other comprehensive income/(loss), including portion attributable to noncontrolling interests	(11,207)	2,858	3,209
Comprehensive income/(loss)	188,372	224,400	135,864
Comprehensive (income)/loss attributable to noncontrolling interests	(13,788)	(18,680)	(11,378)
Comprehensive income/(loss) attributable to OP unitholders	174,584	205,720	124,486
United Dominion Realty L.P.
Net income/(loss)	103,995	231,485	107,855
Other comprehensive income/(loss), including portion attributable to noncontrolling interests:
(Gain)/loss reclassified into earnings from other comprehensive income/(loss)			106
Other comprehensive income/(loss), including portion attributable to noncontrolling interests			106
Comprehensive income/(loss)	103,995	231,485	107,961
Comprehensive (income)/loss attributable to noncontrolling interests	(1,832)	(1,722)	(1,548)
Comprehensive income/(loss) attributable to OP unitholders	$ 102,163	$ 229,763	$ 106,413