Acquisitions - Schedule of Acquisitions Terms (Parenthetical) (Detail)	12 Months Ended
Dec. 31, 2014
Business Combinations [Abstract]
Ownership interest percentage	100.00%
Ownership interest of joint venture partner	95.00%

The percentage of ownership of equity participation by the joint venture partner for the investee accounted for under the equity method of accounting.

No definition available.

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