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Income Taxes - Reconciliation of GAAP Net Loss Attributable to Taxable Income (Parenthetical) (Detail) | 12 Months Ended
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Dec. 31, 2015
Income Tax Disclosure [Abstract] |
Percentage of taxable income dividend rate | 90.00%

X
- Definition Percentage of distributed taxable income to qualify as reit. + References No definition available. + Details
Name: | ddr_PercentageOfDistributedTaxableIncomeToQualifyAsReit
Namespace Prefix: | ddr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration