CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (53,897)	$ (54,028)
Other comprehensive (loss) income:
Foreign currency translation, net	(399)	192
Change in fair value of interest-rate contracts	3	435
Change in cash flow hedges reclassed to earnings	117	178
Total other comprehensive (loss) income	(279)	805
Comprehensive loss	(54,176)	(53,223)
Comprehensive income attributable to non-controlling interests:
Allocation of net income	(256)	(213)
Foreign currency translation, net	74	(45)
Total comprehensive income attributable to non-controlling interests	(182)	(258)
Total comprehensive loss attributable to DDR	$ (54,358)	$ (53,481)