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Nature of Business and Financial Statement Presentation - Non-cash Investing and Financing Activities (Detail) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014
Organization Consolidation And Presentation Of Financial Statements [Abstract] |  |  |
Mortgages assumed from acquisitions | $ 33,700,000 us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1 | $ 0 us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1 |
Elimination of the previously held equity interest in unconsolidated joint ventures acquired | 1,400,000 ddr_ReversalOfPreviouslyHeldEquityInterestRecordedInInvestmentsAndAdvancesToJointVentures | 0 ddr_ReversalOfPreviouslyHeldEquityInterestRecordedInInvestmentsAndAdvancesToJointVentures |
Accounts payable related to construction in progress | 27,300,000 us-gaap_CapitalExpendituresIncurredButNotYetPaid | 18,300,000 us-gaap_CapitalExpendituresIncurredButNotYetPaid |
Dividends declared | $ 67,865,000 us-gaap_DividendsPayableCurrentAndNoncurrent | $ 62,300,000 us-gaap_DividendsPayableCurrentAndNoncurrent | $ 61,468,000 us-gaap_DividendsPayableCurrentAndNoncurrent

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- Definition Future cash outflow to pay for purchases of fixed assets that have occurred. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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