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Acquisitions - Summary of Acquired Shopping Centers (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Gross Purchase Price	$ 407,705,000us-gaap_BusinessCombinationConsiderationTransferred1	$ 1,063,681,000us-gaap_BusinessCombinationConsiderationTransferred1
Blackstone II Acquisition [Member]
Business Acquisition [Line Items]
Date acquired	2014-09
Gross Purchase Price	395,300,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = ddr_BlackstoneTwoAcquisitionMember
Face Value of Mortgage Debt Assumed	233,300,000ddr_NonCashFaceValueOfDebtAssumed / us-gaap_BusinessAcquisitionAxis = ddr_BlackstoneTwoAcquisitionMember
Blackstone I Acquisition [Member]
Business Acquisition [Line Items]
Date acquired		2013-10
Gross Purchase Price		1,550,000,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = ddr_BlackstoneOneAcquisitionMember
Face Value of Mortgage Debt Assumed		792,900,000ddr_NonCashFaceValueOfDebtAssumed / us-gaap_BusinessAcquisitionAxis = ddr_BlackstoneOneAcquisitionMember
Shopping Center [Member] | Parcels Adjacent To existing shopping centers [Member]
Business Acquisition [Line Items]
Date acquired		2013-06
Gross Purchase Price		11,700,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = ddr_ParcelsAdjacentToExistingShoppingCentersMember
Face Value of Mortgage Debt Assumed		0ddr_NonCashFaceValueOfDebtAssumed / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = ddr_ParcelsAdjacentToExistingShoppingCentersMember
Shopping Center [Member] | Colorado Springs [Member] | CO [Member]
Business Acquisition [Line Items]
Date acquired	2014-04
Gross Purchase Price	29,400,000us-gaap_BusinessCombinationConsiderationTransferred1 / invest_InvestmentGeographicRegionAxis = ddr_ColoradoSpringsMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_CO
Face Value of Mortgage Debt Assumed	12,900,000ddr_NonCashFaceValueOfDebtAssumed / invest_InvestmentGeographicRegionAxis = ddr_ColoradoSpringsMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_CO
Shopping Center [Member] | Roseville [Member] | CA [Member]
Business Acquisition [Line Items]
Date acquired	2014-05
Gross Purchase Price	89,500,000us-gaap_BusinessCombinationConsiderationTransferred1 / invest_InvestmentGeographicRegionAxis = ddr_RosevilleMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_CA
Face Value of Mortgage Debt Assumed	0ddr_NonCashFaceValueOfDebtAssumed / invest_InvestmentGeographicRegionAxis = ddr_RosevilleMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_CA
Shopping Center [Member] | Cincinnati [Member] | OH [Member]
Business Acquisition [Line Items]
Date acquired	2014-05
Gross Purchase Price	29,500,000us-gaap_BusinessCombinationConsiderationTransferred1 / invest_InvestmentGeographicRegionAxis = ddr_CincinnatiMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_OH
Face Value of Mortgage Debt Assumed	0ddr_NonCashFaceValueOfDebtAssumed / invest_InvestmentGeographicRegionAxis = ddr_CincinnatiMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_OH
Shopping Center [Member] | Chicago | IL [Member]
Business Acquisition [Line Items]
Date acquired	2014-06
Gross Purchase Price	98,000,000us-gaap_BusinessCombinationConsiderationTransferred1 / invest_InvestmentGeographicRegionAxis = ddr_ChicagoMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_IL
Face Value of Mortgage Debt Assumed	35,500,000ddr_NonCashFaceValueOfDebtAssumed / invest_InvestmentGeographicRegionAxis = ddr_ChicagoMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_IL
Shopping Center [Member] | Philadelphia [Member] | PA [Member]
Business Acquisition [Line Items]
Date acquired	2014-08
Gross Purchase Price	31,500,000us-gaap_BusinessCombinationConsiderationTransferred1 / invest_InvestmentGeographicRegionAxis = ddr_PhiladelphiaMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_PA
Face Value of Mortgage Debt Assumed	0ddr_NonCashFaceValueOfDebtAssumed / invest_InvestmentGeographicRegionAxis = ddr_PhiladelphiaMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_PA
Shopping Center [Member] | Erie [Member] | PA [Member]
Business Acquisition [Line Items]
Date acquired	2014-12
Gross Purchase Price	15,600,000us-gaap_BusinessCombinationConsiderationTransferred1 / invest_InvestmentGeographicRegionAxis = ddr_ErieMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_PA
Face Value of Mortgage Debt Assumed	0ddr_NonCashFaceValueOfDebtAssumed / invest_InvestmentGeographicRegionAxis = ddr_ErieMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_PA
Shopping Center [Member] | Oakland [Member] | CA [Member]
Business Acquisition [Line Items]
Date acquired		2013-02
Gross Purchase Price		41,100,000us-gaap_BusinessCombinationConsiderationTransferred1 / invest_InvestmentGeographicRegionAxis = ddr_OaklandMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_CA
Face Value of Mortgage Debt Assumed		0ddr_NonCashFaceValueOfDebtAssumed / invest_InvestmentGeographicRegionAxis = ddr_OaklandMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_CA
Shopping Center [Member] | Dallas [Member] | TX [Member]
Business Acquisition [Line Items]
Date acquired		2013-03
Gross Purchase Price		40,300,000us-gaap_BusinessCombinationConsiderationTransferred1 / invest_InvestmentGeographicRegionAxis = ddr_DallasMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_TX
Face Value of Mortgage Debt Assumed		0ddr_NonCashFaceValueOfDebtAssumed / invest_InvestmentGeographicRegionAxis = ddr_DallasMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = stpr_TX
Shopping Center [Member] | Tampa, Atlanta, Newport News and Richmond [Member] | Florida Georgia And Virginia [Member]
Business Acquisition [Line Items]
Date acquired		2013-04
Gross Purchase Price		110,500,000us-gaap_BusinessCombinationConsiderationTransferred1 / invest_InvestmentGeographicRegionAxis = ddr_TampaAtlantaNewportNewsAndRichmondMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = ddr_FloridaGeorgiaAndVirginiaMember
Face Value of Mortgage Debt Assumed		0ddr_NonCashFaceValueOfDebtAssumed / invest_InvestmentGeographicRegionAxis = ddr_TampaAtlantaNewportNewsAndRichmondMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = ddr_FloridaGeorgiaAndVirginiaMember
Shopping Center [Member] | Orlando and Atlanta [Member] | Florida and Georgia [Member]
Business Acquisition [Line Items]
Date acquired		2013-07
Gross Purchase Price		258,500,000us-gaap_BusinessCombinationConsiderationTransferred1 / invest_InvestmentGeographicRegionAxis = ddr_OrlandoAndAtlantaMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = ddr_FloridaAndGeorgiaMember
Face Value of Mortgage Debt Assumed		139,400,000ddr_NonCashFaceValueOfDebtAssumed / invest_InvestmentGeographicRegionAxis = ddr_OrlandoAndAtlantaMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember / us-gaap_StatementGeographicalAxis = ddr_FloridaAndGeorgiaMember
Shopping Center [Member] | Blackstone II Acquisition [Member]
Business Acquisition [Line Items]
Date acquired	2014-09
Gross Purchase Price	395,300,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = ddr_BlackstoneTwoAcquisitionMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember
Face Value of Mortgage Debt Assumed	233,300,000ddr_NonCashFaceValueOfDebtAssumed / us-gaap_BusinessAcquisitionAxis = ddr_BlackstoneTwoAcquisitionMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember
Shopping Center [Member] | Blackstone I Acquisition [Member]
Business Acquisition [Line Items]
Date acquired		2013-10
Gross Purchase Price		1,548,400,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = ddr_BlackstoneOneAcquisitionMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember
Face Value of Mortgage Debt Assumed		$ 792,900,000ddr_NonCashFaceValueOfDebtAssumed / us-gaap_BusinessAcquisitionAxis = ddr_BlackstoneOneAcquisitionMember / us-gaap_StatementBusinessSegmentsAxis = ddr_ShoppingCenterMember

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

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