XML 64 R53.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Impairment Charges - Impairment Charges on Assets (Parenthetical) (Detail) - ShoppingCenter | 3 Months Ended
--- | ---
Sep. 30, 2016 | Mar. 31, 2015
Operating Shopping Centers [Member] |  |
Schedule Of Investments [Line Items] |  |
Number of properties |  | 25
Minimum [Member] |  |
Schedule Of Investments [Line Items] |  |
Asset disposal period | 12 months | 12 months
Maximum [Member] |  |
Schedule Of Investments [Line Items] |  |
Asset disposal period | 18 months | 24 months

X
- Definition Asset disposal period. + References No definition available. + Details
Name: | ddr_AssetDisposalPeriod
Namespace Prefix: | ddr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=ddr_OperatingAssetsImpairedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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