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Discontinued Operations - Additional Information (Detail) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2014 Property | Dec. 31, 2013 Property
Discontinued Operations And Disposal Groups [Abstract] |  |
Number of properties sold | 23 | 39
Number of properties held for sale |  | 2

X
- Definition Number of assets classified as held for sale and included in discontinued operations. + References No definition available. + Details
Name: | ddr_NumberOfAssetsHeldForSale
Namespace Prefix: | ddr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of properties sold attributable to the disposal group during the reporting period. + References No definition available. + Details
Name: | ddr_NumberOfPropertiesSold
Namespace Prefix: | ddr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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