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Income Taxes - Summary of Combined Activity TRS (Detail) (TRS [Member], USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
TRS [Member] |  |  |
Income Before Income Taxes [Line Items] |  |  |
Book (loss) income before income taxes | $ (16,934) | $ 4,738 | $ (22,843)

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- Details
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Period Type: | duration

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- Definition Income loss before Tax Benefit Expense of Taxable REIT Subsidiaries and State and Local Income Taxes. + References No definition available. + Details
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Namespace Prefix: | ddr_
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Balance Type: | credit
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