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Investments in and Advances to Joint Ventures - Service Fees and Income Earned by Company's Unconsolidated Joint Ventures (Detail) (Unconsolidated Joint Ventures [Member], USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Unconsolidated Joint Ventures [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Management and other fees | $ 7.4 | $ 7.6 | $ 22.6 | $ 20.9
Development fees and leasing commissions | 2.7 | 2.3 | 7.9 | 6.2
Interest income | $ 5.3 | $ 4.7 | $ 14.4 | $ 5.1

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- Definition Revenue recognition from unconsolidated joint ventures in accordance with management contracts such as development fees and leasing commissions. + References No definition available. + Details
Name: | ddr_DevelopmentFeesAndLeasingCommissionsRelatedToUnconsolidatedJointVenturesRevenue
Namespace Prefix: | ddr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition This element represents interest earned on the notes receivable from unconsolidated joint ventures. + References No definition available. + Details
Name: | ddr_InterestIncome
Namespace Prefix: | ddr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Revenue recognition from unconsolidated joint ventures in accordance with management contracts for collection of management fees. + References No definition available. + Details
Name: | ddr_ManagementAndOtherFees
Namespace Prefix: | ddr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration