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Commitments and Contingencies - Additional Information (Detail) (Coventry II Joint Ventures [Member]) | 3 Months Ended
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Mar. 31, 2015 Property
Coventry II Joint Ventures [Member] |
Contingencies And Commitments [Line Items] |
Number of existing retail properties | 10 ddr_NumberOfExistingRetailProperties / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_CoventryTwoJointVenturesMember

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

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- Definition Existing or proposed retail properties that were acquired through various unconsolidated joint ventures. + References No definition available. + Details
Name: | ddr_NumberOfExistingRetailProperties
Namespace Prefix: | ddr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration