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Discontinued Operations - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Mar. 31, 2013 Property	Dec. 31, 2012 Property
Discontinued Operations And Disposal Groups [Abstract]
Number of properties sold	7	29
Number of assets held for sale	2

X

- Definition

Number of assets held for sale attributable to the disposal group during the reporting period.

+ 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