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Quarterly Results of Operations - Summary of Quarterly Results of Operations (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]                      
Revenues $ 254,788 $ 257,135 $ 257,323 $ 258,825 $ 256,768 $ 245,355 $ 242,040 $ 241,512 $ 1,028,071 $ 985,675 $ 829,935
Net (loss) income attributable to DDR 93,466 59,555 18,598 (243,787) (10,700) 68,606 76,016 (16,640) (72,168) 117,282 (10,175)
Net (loss) income attributable to common shareholders $ 87,872 $ 53,962 $ 13,004 $ (249,381) $ (16,294) $ 63,012 $ 67,815 $ (23,248) $ (94,543) $ 91,285 $ (43,142)
Basic:                      
Net (loss) income per common share attributable to common shareholders $ 0.24 $ 0.15 $ 0.03 $ (0.69) $ (0.05) $ 0.17 $ 0.19 $ (0.07) $ (0.27) $ 0.25 $ (0.14)
Weighted-average number of shares 362,734 361,107 360,073 359,818 359,007 358,025 357,812 357,634      
Diluted:                      
Net (loss) income per common share attributable to common shareholders $ 0.24 $ 0.15 $ 0.03 $ (0.69) $ (0.05) $ 0.17 $ 0.19 $ (0.07) $ (0.27) $ 0.25 $ (0.14)
Weighted-average number of shares 365,197 363,571 364,147 359,818 359,007 358,512 358,295 357,634