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Impairment Charges and Impairment of Joint Venture Investments - Impairment Charges on Assets or Investments (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Impairment Charges And Impairment Of Joint Venture Investments [Abstract]
Company's proportionate share of impairment related to land under development for consolidated joint ventures	$ 50.4

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- Definition

This element represents the impairment charge for land under development recognized to earnings after the allocation of the non-controlling interest.

+ References

No definition available.

+ Details

Name:	ddr_CompanysShareOfImpairmentRelatedToLandUnderDevelopmentForConsolidatedJointVenture
Namespace Prefix:	ddr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	ddr_ImpairmentChargesAndImpairmentOfJointVentureInvestmentsAbstract
Namespace Prefix:	ddr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration