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Income Taxes - Reconciliation Between Cash Dividends Paid and Dividends Paid Deduction (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Reconciliation Of Dividends Paid And Deductible Dividends [Line Items] |  |  |
Dividends paid | $ 153,617 | $ 75,253 | $ 61,204
Plus: Deemed dividends on convertible debt | 7,875 | 0 | 0
Less: Dividends designated to prior year | (6,967) | (6,967) | (6,967)
Plus: Dividends designated from the following year | 7,030 | 6,967 | 6,967
Less: Return of capital | (112,612) | (58,861) | (61,204)
Dividends paid deduction | $ 48,943 | $ 16,392 | $ 0

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- Definition Deemed Dividends on Convertible Debt + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Dividend paid deduction. + References No definition available. + Details
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Namespace Prefix: | ddr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Dividends designated from following periods. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Dividends designated to prior periods. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Dividends paid by an entity during the period for all classes of stock (common, preferred, etc.). + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Details
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- Definition Return of Capital. + References No definition available. + Details
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Namespace Prefix: | ddr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration