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Impairment Charges and Impairment of Joint Venture Investments - Impairment Charges on Assets or Investments (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011
Impairment Charges And Impairment Of Joint Venture Investments [Abstract] |
Company's proportionate share of impairment related to land under development for consolidated joint ventures | $ 50.4

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- Definition This element represents the impairment charge for land under development recognized to earnings after the allocation of the non-controlling interest. + References No definition available. + Details
Name: | ddr_CompanysShareOfImpairmentRelatedToLandUnderDevelopmentForConsolidatedJointVenture
Namespace Prefix: | ddr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | ddr_ImpairmentChargesAndImpairmentOfJointVentureInvestmentsAbstract
Namespace Prefix: | ddr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration