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Income Taxes - Reconciliation of GAAP Net Loss Attributable to Taxable Income (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Percentage of taxable income dividend rate	90.00%

X

- Definition

Percentage of distributed taxable income to qualify as reit.

+ References

No definition available.

+ Details

Name:	ddr_PercentageOfDistributedTaxableIncomeToQualifyAsReit
Namespace Prefix:	ddr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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