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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified |  | 9 Months Ended
--- | --- | ---
Jan. 23, 2013 Oxford [Member] | Sep. 30, 2014 Coventry II Joint Ventures [Member] Property
Contingencies And Commitments [Line Items] |  |
Number of existing retail properties |  | 10
Amount transferred to pay vendors pursuant to an agreement | $ 11 |

X
- Definition Amount transferred to pay vendors pursuant to an agreement + References No definition available. + Details
Name: | ddr_AmountTransferred
Namespace Prefix: | ddr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- 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