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Investments in and Advances to Joint Ventures - Service Fees and Income Earned by Company's Unconsolidated Joint Ventures (Detail) (Unconsolidated Joint Ventures [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Unconsolidated Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Management and other fees	$ 7.8	$ 6.5	$ 15.3	$ 13.4
Development fees and leasing commissions	2.3	1.9	5.2	3.9
Interest income	$ 4.6	$ 0.5	$ 9.1	$ 0.5

X

- Definition

Revenue recognition from unconsolidated joint ventures in accordance with management contracts such as development fees and leasing commissions.

+ References

No definition available.

+ Details

Name:	ddr_DevelopmentFeesAndLeasingCommissionsRelatedToUnconsolidatedJointVenturesRevenue
Namespace Prefix:	ddr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

This element represents interest earned on the notes receivable from unconsolidated joint ventures.

+ References

No definition available.

+ Details

Name:	ddr_InterestIncome
Namespace Prefix:	ddr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Revenue recognition from unconsolidated joint ventures in accordance with management contracts for collection of management fees.

+ References

No definition available.

+ Details

Name:	ddr_ManagementAndOtherFees
Namespace Prefix:	ddr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

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