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Summary of Significant Accounting Policies - Summary of Estimated Net Future Amortization Income Associated with Above and Below-Market Leases (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2015 USD ($)
Above And Below Market Lease Future Amortization Income [Abstract] |
2016 | $ 4.3
2017 | 5.4
2018 | 7.0
2019 | 7.9
2020 | $ 8.0

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- Definition Above and below market lease future amortization income. + References No definition available. + Details
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- Definition The amount of amortization income, net associated with above and below market leases expected to be recognized during year five of the five succeeding fiscal years. + References No definition available. + Details
Name: | ddr_FutureAmortizationIncomeYearFive
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- Definition The amount of amortization income, net associated with above and below market leases expected to be recognized during year four of the five succeeding fiscal years. + References No definition available. + Details
Name: | ddr_FutureAmortizationIncomeYearFour
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- Definition The amount of amortization income, net associated with above and below market leases expected to be recognized during year one of the five succeeding fiscal years. + References No definition available. + Details
Name: | ddr_FutureAmortizationIncomeYearOne
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- Definition The amount of amortization income, net associated with above and below market leases expected to be recognized during year three of the five succeeding fiscal years. + References No definition available. + Details
Name: | ddr_FutureAmortizationIncomeYearThree
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- Definition The amount of amortization income, net associated with above and below market leases expected to be recognized during year two of the five succeeding fiscal years. + References No definition available. + Details
Name: | ddr_FutureAmortizationIncomeYearTwo
Namespace Prefix: | ddr_
Data Type: | xbrli:monetaryItemType
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