XML 69 R50.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Commitments and Contingencies - Additional Information (Detail) - Employee Severance - USD ($) $ in Millions | 3 Months Ended
--- | ---
Jun. 30, 2017 | Mar. 31, 2017
Contingencies And Commitments [Line Items] |  |
Aggregate separation charge |  | $ 11.5
Scenario Forecast [Member] |  |
Contingencies And Commitments [Line Items] |  |
Severance costs and stock-based compensation expense | $ 5.0 |
Accounts Payable and Accrued Expenses [Member] |  |
Contingencies And Commitments [Line Items] |  |
Accrued separation charge |  | 8.2
Management Transition [Member] |  |
Contingencies And Commitments [Line Items] |  |
Aggregate separation charge |  | 9.4
Stock-based compensation expense |  | 3.3
Other Contractual Staffing Reductions [Member] |  |
Contingencies And Commitments [Line Items] |  |
Aggregate separation charge |  | $ 2.1

X
- 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

X
- Definition Severance costs and stock based compensation costs. + References No definition available. + Details
Name: | ddr_SeveranceCostsAndStockBasedCompensationCosts
Namespace Prefix: | ddr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
Name: | us-gaap_RestructuringReserve
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Additional share-based compensation cost recognized as a result of an occurrence of an event that accelerates its recognition. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Liability for amount due employees, in addition to wages and any other money that employers owe employees, when their employment ends through a layoff or other termination. For example, a company may provide involuntarily terminated employees with a lump sum payment equal to one week's salary for every year of employment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Postemployment Benefits -URI http://asc.fasb.org/extlink&oid=6519534 + Details
Name: | us-gaap_SupplementalUnemploymentBenefitsSeveranceBenefits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_EmployeeSeveranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_AccountsPayableAndAccruedLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringPlanAxis=ddr_ManagementTransitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringPlanAxis=ddr_OtherContractualStaffingReductionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |