Acquisitions - Unaudited Supplemental to Pro Forma Operating Data (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Business Acquisition, Pro Forma Information [Abstract]
Pro forma revenues	$ 255,119	$ 251,230	$ 511,311	$ 497,072
Pro forma income (loss) from continuing operations	68,699	(23,108)	40,690	(32,757)
Pro forma income (loss) from discontinued operations	6,643	(21,596)	17,280	(26,526)
Pro forma net income (loss) attributable to DDR common shareholders	$ 67,734	$ (59,145)	$ 44,403	$ (81,002)
Basic earnings per share data:
Income (loss) from continuing operations attributable to DDR common shareholders	$ 0.17	$ (0.11)	$ 0.07	$ (0.16)
Income (loss) from discontinued operations attributable to DDR common shareholders	$ 0.02	$ (0.06)	$ 0.05	$ (0.07)
Net income (loss) attributable to DDR common shareholders	$ 0.19	$ (0.17)	$ 0.12	$ (0.23)
Diluted earnings per share data:
Income (loss) from continuing operations attributable to DDR common shareholders	$ 0.17	$ (0.11)	$ 0.07	$ (0.16)
Income (loss) from discontinued operations attributable to DDR common shareholders	$ 0.02	$ (0.06)	$ 0.05	$ (0.07)
Net income (loss) attributable to DDR common shareholders	$ 0.19	$ (0.17)	$ 0.12	$ (0.23)

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- Definition

The pro forma income from discontinued operations before changes in accounting and extraordinary items, net of tax effect per basic share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

No definition available.

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The pro forma income from discontinued operations before changes in accounting and extraordinary items, net of tax effect per diluted share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

No definition available.

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- Definition

The pro forma discontinued operations for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

No definition available.

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect per basic share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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