XML 108 R132.htm IDEA: XBRL DOCUMENT v2.4.1.9
Segment Information - Summary of Company's Shopping Centers (Detail) (Shopping Center [Member])
Dec. 31, 2014
ShoppingCenter
Dec. 31, 2013
ShoppingCenter
Dec. 31, 2012
ShoppingCenter
Segment Reporting Asset Reconciling Item [Line Items]      
Shopping centers owned 415us-gaap_NumberOfRealEstateProperties 416us-gaap_NumberOfRealEstateProperties 452us-gaap_NumberOfRealEstateProperties
Joint ventures [Member]      
Segment Reporting Asset Reconciling Item [Line Items]      
Shopping centers owned 189us-gaap_NumberOfRealEstateProperties
/ dei_LegalEntityAxis
= us-gaap_CorporateJointVentureMember
/ us-gaap_StatementBusinessSegmentsAxis
= ddr_ShoppingCenterMember		 173us-gaap_NumberOfRealEstateProperties
/ dei_LegalEntityAxis
= us-gaap_CorporateJointVentureMember
/ us-gaap_StatementBusinessSegmentsAxis
= ddr_ShoppingCenterMember		 209us-gaap_NumberOfRealEstateProperties
/ dei_LegalEntityAxis
= us-gaap_CorporateJointVentureMember
/ us-gaap_StatementBusinessSegmentsAxis
= ddr_ShoppingCenterMember