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Discontinued Operations and Disposition of Real Estate and Real Estate Investments - Additional Information (Detail) - Property	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Discontinued Operations And Disposal Groups [Abstract]
Number of properties sold	29
Number of properties sold under discontinued operations		35	39

X

- Definition

Discontinued operations number of real estate properties sold.

+ References

No definition available.

+ Details

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Namespace Prefix:	ddr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

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

- References

No definition available.

+ Details

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