Capital And Accumulated Other Comprehensive Income (Schedule Of Dividends/Distributions) (Details) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($) $ / shares
Series E Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	$ 15,093
Preferred stock dividend per share amount | $ / shares	$ 1.750
Series F Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	$ 9,069
Preferred stock dividend per share amount | $ / shares	$ 1.656
Series G Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	$ 11,016
Preferred stock dividend per share amount | $ / shares	$ 1.469
Series H Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	$ 20,190
Preferred stock dividend per share amount | $ / shares	$ 1.844
Common Units
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units	$ 353,796
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
February 25, 2015 | Series E Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	5,031
February 25, 2015 | Series F Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	3,023
February 25, 2015 | Series F Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	3,023
February 25, 2015 | Series G Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	3,672
February 25, 2015 | Series G Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	3,672
February 25, 2015 | Series H Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	6,730
February 25, 2015 | Series H Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	6,730
February 25, 2015 | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units	$ 117,896
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
May 12, 2015 | Series F Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	3,023
May 12, 2015 | Series G Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	3,672
May 12, 2015 | Series H Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	6,730
May 12, 2015 | Common Units
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units	$ 117,938
August 11, 2015
Dividends Payable [Line Items]
Date dividend/distribution declared	Aug. 11, 2015
Dividend/Distribution payment date	Sep. 30, 2015
August 11, 2015 | Series E Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	$ 5,031
August 11, 2015 | Series F Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	3,023
August 11, 2015 | Series G Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	3,672
August 11, 2015 | Series H Preferred Units
Dividends Payable [Line Items]
Dividends/Distributions, preferred units	6,730
August 11, 2015 | Common Units
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units	$ 117,962
Annual rate | Series E Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Preferred stock dividend per share amount | $ / shares	$ 1.750
Annual rate | Series F Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Preferred stock dividend per share amount | $ / shares	1.656
Annual rate | Series G Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Preferred stock dividend per share amount | $ / shares	1.469
Annual rate | Series H Preferred Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Preferred stock dividend per share amount | $ / shares	1.844
Annual rate | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Common stock dividend per share amount | $ / shares	$ 3.400