CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (243,132)	$ 61,199	$ (70,310)
Other comprehensive income:
Foreign currency translation, net	1,547	31	(2,088)
Change in fair value of interest-rate contracts	1,002	1,491	1,203
Change in cash flow hedges reclassed to earnings	828	688	1,173
Total other comprehensive income	3,377	2,210	288
Comprehensive (loss) income	(239,755)	63,409	(70,022)
Comprehensive (loss) income attributable to non-controlling interests:
Allocation of net loss (income)	1,447	(1,187)	(1,858)
Foreign currency translation, net	(291)	(119)	781
Total comprehensive loss (income) attributable to non-controlling interests	1,156	(1,306)	(1,077)
Total comprehensive (loss) income attributable to DDR	$ (238,599)	$ 62,103	$ (71,099)