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Segment Information - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2013 Segment
Segment Reporting [Abstract]
Number of reportable segments	3
Quantitative threshold of revenues, profit or loss and assets for identifying reportable segments	10.00%

X

- Definition

Quantitative threshold of revenues profit or loss and assets for identifying reportable segments.

+ References

No definition available.

+ Details

Name:	ddr_QuantitativeThresholdOfRevenuesProfitOrLossAndAssetsForIdentifyingReportableSegments
Namespace Prefix:	ddr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SegmentReportingAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration