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Investments in and Advances to Joint Ventures - Condensed Combined Statements of Operations of Unconsolidated Joint Venture Investments (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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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
Expenses from operations: |  |  |  |  |  |  |  |  |  |  |
Operating expenses |  |  |  |  |  |  |  |  | $ 1,048,141 | $ 797,591 | $ 634,339
Impairment charges |  |  |  |  |  |  |  |  | 279,021 | 29,175 | 19,044
Depreciation and amortization |  |  |  |  |  |  |  |  | 402,045 | 402,825 | 296,560
Interest expense |  |  |  |  |  |  |  |  | 241,727 | 237,120 | 214,370
Other (income) expense, net |  |  |  |  |  |  |  |  | 1,739 | 12,262 | 6,408
(Loss) income before tax expense of taxable REIT subsidiaries and state franchise and income taxes |  |  |  |  |  |  |  |  | (231,595) | 22,962 | 24,104
Income tax expense (primarily Sonae Sierra Brasil), net |  |  |  |  |  |  |  |  | (6,286) | (1,855) | (2,685)
(Loss) income from continuing operations |  |  |  |  |  |  |  |  | (237,881) | 21,107 | 21,419
Discontinued operations: |  |  |  |  |  |  |  |  |  |  |
Loss from discontinued operations |  |  |  |  |  |  |  |  |  | (6,611) | (42,541)
Gain (loss) on disposition of real estate, net of tax |  |  |  |  |  |  |  |  |  | 96,009 | 11,274
(Loss) income before gain on disposition of real estate |  |  |  |  |  |  |  |  | (237,881) | 110,505 | (9,848)
Gain on disposition of real estate, net |  |  |  |  |  |  |  |  | 167,571 | 3,060 | 467
(Income) loss attributable to non-controlling interests, net |  |  |  |  |  |  |  |  | (1,858) | 3,717 | (794)
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)
Company's share of equity in net (loss) income of joint ventures |  |  |  |  |  |  |  |  | (5,289) | 9,218 | 3,314
Basis differential adjustments |  |  |  |  |  |  |  |  | 2,154 | 1,771 | 3,505
Equity in net (loss) income of joint ventures |  |  |  |  |  |  |  |  | (3,135) | 10,989 | 6,819
Unconsolidated Joint Ventures [Member] |  |  |  |  |  |  |  |  |  |  |
Condensed Combined Statements of Operations |  |  |  |  |  |  |  |  |  |  |
Revenues from operations |  |  |  |  |  |  |  |  | 524,697 | 485,764 | 635,933
Expenses from operations: |  |  |  |  |  |  |  |  |  |  |
Operating expenses |  |  |  |  |  |  |  |  | 195,957 | 167,691 | 210,829
Impairment charges |  |  |  |  |  |  |  |  | 52,700 | 21,583 | 43,913
Depreciation and amortization |  |  |  |  |  |  |  |  | 207,816 | 151,651 | 201,021
Interest expense |  |  |  |  |  |  |  |  | 140,701 | 171,803 | 204,893
Other (income) expense, net |  |  |  |  |  |  |  |  | 7,193 | 18,249 | 2,298
Total expenses |  |  |  |  |  |  |  |  | 604,367 | 530,977 | 662,954
(Loss) income before tax expense of taxable REIT subsidiaries and state franchise and income taxes |  |  |  |  |  |  |  |  | (79,670) | (45,213) | (27,021)
Income tax expense (primarily Sonae Sierra Brasil), net |  |  |  |  |  |  |  |  | 0 | (6,565) | (27,553)
(Loss) income from continuing operations |  |  |  |  |  |  |  |  | (79,670) | (51,778) | (54,574)
Discontinued operations: |  |  |  |  |  |  |  |  |  |  |
Loss from discontinued operations |  |  |  |  |  |  |  |  | 0 | (13,955) | (65,951)
Gain (loss) on disposition of real estate, net of tax |  |  |  |  |  |  |  |  | 0 | 55,020 | (19,190)
(Loss) income before gain on disposition of real estate |  |  |  |  |  |  |  |  | (79,670) | (10,713) | (139,715)
Gain on disposition of real estate, net |  |  |  |  |  |  |  |  | 17,188 | 10,116 | 794
Net loss |  |  |  |  |  |  |  |  | (62,482) | (597) | (138,921)
(Income) loss attributable to non-controlling interests, net |  |  |  |  |  |  |  |  | 0 | (2,022) | (26,005)
Net (loss) income attributable to DDR |  |  |  |  |  |  |  |  | $ (62,482) | $ (2,619) | $ (164,926)

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