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Real Estate and Accumulated Depreciation (Parenthetical) (Detail) (USD $) | Dec. 31, 2014
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Real Estate And Accumulated Depreciation Disclosure [Abstract] |
Tax cost basis of assets | $ 10,600,000,000 us-gaap_RealEstateFederalIncomeTaxBasis
Real estate land under development | 184,000,000 ddr_RealEstateLandUnderDevelopment
Real estate construction in progress | 211,200,000 ddr_RealEstateConstructionInProgress
The amount of tax-exempt certificates excluded from encumbrances | 15,000,000 ddr_RealEstateTaxExemptBonds
Fair market value of debt adjustments excluded from encumbrances | $ 29,700,000 ddr_FairMarketValueOfDebtAdjustments

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- Definition Fair market value of debt adjustments excluded from encumbrances. + References No definition available. + Details
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Namespace Prefix: | ddr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The amount of construction in progress included in real estate. + References No definition available. + Details
Name: | ddr_RealEstateConstructionInProgress
Namespace Prefix: | ddr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The amount of land under development included in real estate. + References No definition available. + Details
Name: | ddr_RealEstateLandUnderDevelopment
Namespace Prefix: | ddr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The amount of tax-exempt certificates excluded from encumbrances. + References No definition available. + Details
Name: | ddr_RealEstateTaxExemptBonds
Namespace Prefix: | ddr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Cost basis of real estate investments for federal income tax purposes for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 28 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule III -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28.FN6) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 + Details
Name: | us-gaap_RealEstateFederalIncomeTaxBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant