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Commitments and Contingencies - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2016 USD ($)
Contingencies And Commitments [Line Items] |
Agreements entered into with general contractors for the construction or redevelopment of shopping centers | $ 11.6
Outstanding letters of credit | 21.9
Affiliate debt guarantee | $ 4.5
Mortgage debt maturity, year and month | 2020-10
Long-term ground leases expiration period | various dates through 2070
Minimum [Member] |
Contingencies And Commitments [Line Items] |
Period space in shopping centers leased | 1 month
Maximum [Member] |
Contingencies And Commitments [Line Items] |
Period space in shopping centers leased | 30 years

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- Definition Agreements entered into with general contractors for the construction or redevelopment of shopping centers. + References No definition available. + Details
Name: | ddr_CommitmentsForConstructionOfProperties
Namespace Prefix: | ddr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Contingencies and commitments. + References No definition available. + Details
Name: | ddr_ContingenciesAndCommitmentsLineItems
Namespace Prefix: | ddr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Long term ground leases expiration period. + References No definition available. + Details
Name: | ddr_LongTermGroundLeasesExpirationPeriod
Namespace Prefix: | ddr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Date when the term loan is scheduled to be fully repaid. + References No definition available. + Details
Name: | ddr_MaturityDateOfLoan
Namespace Prefix: | ddr_
Data Type: | xbrli:gYearMonthItemType
Balance Type: | na
Period Type: | duration

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- Definition Period space in shopping centers leased. + References No definition available. + Details
Name: | ddr_PeriodSpaceInShoppingCentersLeased
Namespace Prefix: | ddr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
Name: | us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |