Capital And Accumulated Other Comprehensive Income (Schedule Of Dividends/Distributions) (Details) - 6 months ended Jun. 30, 2015 - USD ($)	Total
Series E Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	$ 10,062,000
Preferred stock dividend per share amount	$ 1.750
Series F Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	$ 6,046,000
Preferred stock dividend per share amount	$ 1.656
Series G Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	$ 7,344,000
Preferred stock dividend per share amount	$ 1.469
Series H Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	$ 13,460,000
Preferred stock dividend per share amount	$ 1.844
Common Units
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units	$ 235,834,000
February 25, 2015
Dividends Payable [Line Items]
Date dividend/distribution declared	Feb. 25, 2015
Dividend/Distribution payment date	Mar. 31, 2015
February 25, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Date dividend/distribution declared	Feb. 25, 2015
Dividend/Distribution payment date	Mar. 31, 2015
February 25, 2015 | Series E Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	$ 5,031,000
February 25, 2015 | Series E Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	5,031,000
February 25, 2015 | Series F Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	3,023,000
February 25, 2015 | Series F Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	3,023,000
February 25, 2015 | Series G Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	3,672,000
February 25, 2015 | Series G Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	3,672,000
February 25, 2015 | Series H Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	6,730,000
February 25, 2015 | Series H Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	6,730,000
February 25, 2015 | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units	$ 117,896,000
May 12, 2015
Dividends Payable [Line Items]
Date dividend/distribution declared	May 12, 2015
Dividend/Distribution payment date	Jun. 30, 2015
May 12, 2015 | Series E Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	$ 5,031,000
May 12, 2015 | Series F Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	3,023,000
May 12, 2015 | Series G Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	3,672,000
May 12, 2015 | Series H Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	6,730,000
May 12, 2015 | Common Units
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units	117,938,000
Annual rate | Series E Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	1.750
Annual rate | Series F Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	1.656
Annual rate | Series G Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	1.469
Annual rate | Series H Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	1.844
Annual rate | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units	$ 3.400