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Investments in and Advances to Joint Ventures - Service Fees and Income Earned by Company's Unconsolidated Joint Ventures (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Schedule Of Equity Method Investments [Line Items]
Management and other fees	$ 6.2	$ 7.8	$ 12.3	$ 15.3
Development fees and leasing commissions	1.5	2.3	3.5	5.2
Interest income from joint ventures	$ 1.7	$ 4.6	$ 3.4	$ 9.1

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

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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 accounted for under the equity method.

+ 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

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