Income Taxes - Reconciliation of GAAP Net Loss Attributable to Taxable Income (Parenthetical) (Detail)	12 Months Ended
Dec. 31, 2014
Income Tax Disclosure [Abstract]
Percentage of taxable income dividend rate	90.00%

Percentage of distributed taxable income to qualify as reit.

No definition available.

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