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Investments in and Advances to Joint Ventures - Condensed Combined Statements of Operations of Unconsolidated Joint Venture Investments (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Expenses from operations: |  |
Operating expenses | $ 476,986 us-gaap_OperatingExpenses | $ 196,764 us-gaap_OperatingExpenses
Impairment charges | 279,021 us-gaap_AssetImpairmentCharges | 2,329 us-gaap_AssetImpairmentCharges
Depreciation and amortization | 103,015 us-gaap_DepreciationAndAmortization | 103,619 us-gaap_DepreciationAndAmortization
Interest expense | 63,020 us-gaap_InterestExpense | 59,698 us-gaap_InterestExpense
Other (income) expense, net | 3,428 us-gaap_OtherNonoperatingIncomeExpense | 4,183 us-gaap_OtherNonoperatingIncomeExpense
Loss before tax expense of taxable REIT subsidiaries and state franchise and income taxes | (263,108)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (19,616)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income tax expense (primarily Sonae Sierra Brasil), net | (4,900)us-gaap_IncomeTaxExpenseBenefit | (684)us-gaap_IncomeTaxExpenseBenefit
Loss from continuing operations | (268,008)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | (20,300)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Discontinued operations: |  |
Loss from discontinued operations |  | (7,683)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax
Gain on disposition of real estate, net of tax |  | 10,695 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
Loss before gain (loss) on disposition of real estate | (268,008)us-gaap_IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChanges | (17,288)us-gaap_IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChanges
Loss on disposition of real estate, net | 25,094 us-gaap_GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes | (1,090)us-gaap_GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes
(Income) loss attributable to non-controlling interests, net | (873)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | 1,738 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Net loss attributable to DDR | (243,787)us-gaap_NetIncomeLoss | (16,640)us-gaap_NetIncomeLoss
Company's share of equity in net (loss) income of joint ventures | (247)ddr_CompanysShareOfEquityInNetIncomeOfUnconsolidatedJointVentures | 4,731 ddr_CompanysShareOfEquityInNetIncomeOfUnconsolidatedJointVentures
Basis differential adjustments | 308 ddr_AmortizationOfDifferenceInHistoricalBasisOfOurContribution | 759 ddr_AmortizationOfDifferenceInHistoricalBasisOfOurContribution
Equity in net income of joint ventures | 61 us-gaap_IncomeLossFromEquityMethodInvestments | 5,490 us-gaap_IncomeLossFromEquityMethodInvestments
Unconsolidated Joint Ventures [Member] |  |
Condensed Combined Statements of Operations |  |
Revenues from operations | 137,600 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | 136,501 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Expenses from operations: |  |
Operating expenses | 50,982 us-gaap_OperatingExpenses / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | 47,807 us-gaap_OperatingExpenses / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Impairment charges | 448 us-gaap_AssetImpairmentCharges / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | 0 us-gaap_AssetImpairmentCharges / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Depreciation and amortization | 56,737 us-gaap_DepreciationAndAmortization / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | 41,214 us-gaap_DepreciationAndAmortization / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Interest expense | 40,903 us-gaap_InterestExpense / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | 50,058 us-gaap_InterestExpense / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Other (income) expense, net | 367 us-gaap_OtherNonoperatingIncomeExpense / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | 3,043 us-gaap_OtherNonoperatingIncomeExpense / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Total expenses | 149,437 ddr_Expenses / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | 142,122 ddr_Expenses / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Loss before tax expense of taxable REIT subsidiaries and state franchise and income taxes | (11,837)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | (5,621)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Income tax expense (primarily Sonae Sierra Brasil), net | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | (4,140)us-gaap_IncomeTaxExpenseBenefit / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Loss from continuing operations | (11,837)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | (9,761)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Discontinued operations: |  |
Loss from discontinued operations | 0 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | (2,490)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Gain on disposition of real estate, net of tax | 0 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | 21,473 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Loss before gain (loss) on disposition of real estate | (11,837)us-gaap_IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChanges / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | 9,222 us-gaap_IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChanges / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Loss on disposition of real estate, net | (213)us-gaap_GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | 0 us-gaap_GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Net (loss) income | (12,050)us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | 9,222 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
(Income) loss attributable to non-controlling interests, net | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | (1,488)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember
Net loss attributable to DDR | $ (12,050)us-gaap_NetIncomeLoss / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember | $ 7,734 us-gaap_NetIncomeLoss / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ddr_UnconsolidatedJointVenturesMember

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- Definition This item represents the amortization of the difference between the amount at which an investment accounted for under the equity method of accounting is carried on the balance sheet and the amount of the underlying equity in net assets reporting entity has in the investee. + References No definition available. + Details
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- Definition This element is for Real Estate Investment Trust (REIT) statement of income purposes. It represents the income or loss from operations, both continuing and discontinued, before the effects of extraordinary items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 974 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-15.(a)(1)(i)) -URI http://asc.fasb.org/extlink&oid=6875705&loc=d3e641549-123027 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 15 -Paragraph a -Subparagraph 1(i) -Article 3 + Details
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- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35710027&loc=d3e41242-110953 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5 + Details
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.12) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 7 + Details
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- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 + Details
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- Definition The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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