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Earnings from Depreciated Property Sales Share of Joint Venture

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- Definition

Number of Real Estate Properties Sold

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Number of Unconsolidated Joint Ventures in which Equity Interests Held

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- Definition

Square Footage Of Real Estate Properties Acquired Or Disposed.

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- Definition

Cash dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations that are returns of capital. Excludes dividends or distributions from equity method investments classified as operating activities.

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- Definition

Cash received from the sale of real estate that is held for investment, that is, it is part of an investing activity during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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Significant Acquisitions and Dispositions Dispositions (Details) (USD $)	12 Months Ended
	Dec. 31, 2014 buildings entities	Dec. 31, 2013 buildings	Dec. 31, 2012 buildings
Dispositions Disclosures [Line Items]
Proceeds from Sale of Real Estate Held-for-investment	$ 493,217,000	$ 740,039,000	$ 138,118,000
Number of Real Estate Properties Sold	29dre_NumberofRealEstatePropertiesSold	38dre_NumberofRealEstatePropertiesSold	28dre_NumberofRealEstatePropertiesSold
Number of Unconsolidated Joint Ventures in which Equity Interests Held	17
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital	91,750,000	109,158,000	5,157,000
Earnings from Depreciated Property Sales Share of Joint Venture	84,600,000	51,200,000
Medical Office [Member]
Dispositions Disclosures [Line Items]
Proceeds from Sale of Real Estate Held-for-investment		285,900,000
Number of Real Estate Properties Sold		18
Square Footage Of Real Estate Properties Acquired Or Disposed		1,100,000
Unconsolidated Properties [Member]
Dispositions Disclosures [Line Items]
Number of Unconsolidated Joint Ventures in which Equity Interests Held	6
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital		92,300,000
Unconsolidated Properties [Member] \| Industrial [Member]
Dispositions Disclosures [Line Items]
Number of Real Estate Properties Sold	11	1
Unconsolidated Properties [Member] \| Office Building [Member]
Dispositions Disclosures [Line Items]
Number of Real Estate Properties Sold	11	19
Unconsolidated Properties [Member] \| Retail [Member]
Dispositions Disclosures [Line Items]
Number of Real Estate Properties Sold	1
Atlanta Georgia [Member] \| Unconsolidated Properties [Member] \| Office Building [Member]
Dispositions Disclosures [Line Items]
Square Footage Of Real Estate Properties Acquired Or Disposed	436,000
St. Louis Park, Minnesota [Member] \| Unconsolidated Properties [Member] \| Office Building [Member]
Dispositions Disclosures [Line Items]
Square Footage Of Real Estate Properties Acquired Or Disposed	382,000
Cincinnati [Member]
Dispositions Disclosures [Line Items]
Proceeds from Sale of Real Estate Held-for-investment	150,500,000
Number of Real Estate Properties Sold	6
Square Footage Of Real Estate Properties Acquired Or Disposed	1,000,000
South Florida [Member]
Dispositions Disclosures [Line Items]
Proceeds from Sale of Real Estate Held-for-investment	$ 128,000,000
Number of Real Estate Properties Sold	2
Square Footage Of Real Estate Properties Acquired Or Disposed	466,000