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Capital and Accumulated Other Comprehensive Income (Loss) (Schedule of Distributions) (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Sep. 15, 2016
Aug. 24, 2015
Apr. 07, 2014
Mar. 26, 2014
Jun. 28, 2013
Apr. 09, 2013
Apr. 18, 2012
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Series E Preferred Stock and Unit                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 10,062 $ 20,124 $ 20,124
Annual rate of dividend per share (in dollars per unit)               $ 1.75    
Preferred stock, redemption price per share (in dollars per unit) $ 25.35972                  
Preferred Stock, liquidation preference per share/unit (in dollars per unit) $ 25.00             $ 25 $ 25  
Accrued and unpaid dividends up to but not including the redemption date $ 4,100                  
Redemption premium $ 10,300             $ 10,300    
Series E Preferred Stock and Unit | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 10,062 $ 20,124 20,124
Annual rate of dividend per share (in dollars per unit)               $ 1.750    
Preferred stock, redemption price per share (in dollars per unit) $ 25.35972                  
Preferred Stock, liquidation preference per share/unit (in dollars per unit) $ 25.00             $ 25 $ 25  
Accrued and unpaid dividends up to but not including the redemption date $ 4,100                  
Redemption premium $ 10,300                  
Series E Preferred Stock and Unit | February 11, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   5,031
Series E Preferred Stock and Unit | February 11, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   5,031
Series E Preferred Stock and Unit | April 29, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   5,031
Series E Preferred Stock and Unit | April 29, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   5,031
Series E Preferred Stock and Unit | July 21, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   5,031
Series E Preferred Stock and Unit | July 21, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   5,031
Series E Preferred Stock and Unit | November 4, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   5,031
Series E Preferred Stock and Unit | November 4, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   5,031
Series E Preferred Stock and Unit | February 25, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 $ 5,031  
Series E Preferred Stock and Unit | February 25, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 5,031  
Series E Preferred Stock and Unit | May 12, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 5,031  
Series E Preferred Stock and Unit | May 12, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 5,031  
Series E Preferred Stock and Unit | August 11, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 5,031  
Series E Preferred Stock and Unit | August 11, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 5,031  
Series E Preferred Stock and Unit | November 12, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 5,031  
Series E Preferred Stock and Unit | November 12, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 5,031  
Series E Preferred Stock and Unit | February 17, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 5,031    
Series E Preferred Stock and Unit | February 17, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               5,031    
Series E Preferred Stock and Unit | May 11, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               5,031    
Series E Preferred Stock and Unit | May 11, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               5,031    
Series E Preferred Stock and Unit | August 10, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               0    
Series E Preferred Stock and Unit | August 10, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               0    
Series E Preferred Stock and Unit | November 9, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               0    
Series E Preferred Stock and Unit | November 9, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               0    
Series F Preferred Stock and Unit                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 12,092 $ 12,092 12,092
Annual rate of dividend per share (in dollars per unit)             $ 1.65625 $ 1.65625    
Preferred stock, redemption price per share (in dollars per unit)               25.00    
Preferred Stock, liquidation preference per share/unit (in dollars per unit)             25.00 $ 25 $ 25  
Series F Preferred Stock and Unit | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 12,092 $ 12,092 12,092
Annual rate of dividend per share (in dollars per unit)             1.65625 $ 1.656    
Preferred stock, redemption price per share (in dollars per unit)               25.00    
Preferred Stock, liquidation preference per share/unit (in dollars per unit)             $ 25.00 $ 25 $ 25  
Series F Preferred Stock and Unit | February 11, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,023
Series F Preferred Stock and Unit | February 11, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,023
Series F Preferred Stock and Unit | April 29, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,023
Series F Preferred Stock and Unit | April 29, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,023
Series F Preferred Stock and Unit | July 21, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,023
Series F Preferred Stock and Unit | July 21, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,023
Series F Preferred Stock and Unit | November 4, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,023
Series F Preferred Stock and Unit | November 4, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,023
Series F Preferred Stock and Unit | February 25, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 $ 3,023  
Series F Preferred Stock and Unit | February 25, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 3,023  
Series F Preferred Stock and Unit | May 12, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 3,023  
Series F Preferred Stock and Unit | May 12, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 3,023  
Series F Preferred Stock and Unit | August 11, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 3,023  
Series F Preferred Stock and Unit | August 11, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 3,023  
Series F Preferred Stock and Unit | November 12, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 3,023  
Series F Preferred Stock and Unit | November 12, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 3,023  
Series F Preferred Stock and Unit | February 17, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 3,023    
Series F Preferred Stock and Unit | February 17, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,023    
Series F Preferred Stock and Unit | May 11, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,023    
Series F Preferred Stock and Unit | May 11, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,023    
Series F Preferred Stock and Unit | August 10, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,023    
Series F Preferred Stock and Unit | August 10, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,023    
Series F Preferred Stock and Unit | November 9, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,023    
Series F Preferred Stock and Unit | November 9, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,023    
Series G Preferred Stock and Unit                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 14,688 $ 14,688 14,688
Annual rate of dividend per share (in dollars per unit)         $ 0.334550 $ 1.46875   $ 1.46875    
Preferred stock, redemption price per share (in dollars per unit)               25.00    
Preferred Stock, liquidation preference per share/unit (in dollars per unit)           25   $ 25 $ 25  
Series G Preferred Stock and Unit | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 14,688 $ 14,688 14,688
Annual rate of dividend per share (in dollars per unit)           1.46875   $ 1.469    
Preferred stock, redemption price per share (in dollars per unit)               25.00    
Preferred Stock, liquidation preference per share/unit (in dollars per unit)           $ 25   $ 25 $ 25  
Series G Preferred Stock and Unit | February 11, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,672
Series G Preferred Stock and Unit | February 11, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,672
Series G Preferred Stock and Unit | April 29, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,672
Series G Preferred Stock and Unit | April 29, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,672
Series G Preferred Stock and Unit | July 21, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,672
Series G Preferred Stock and Unit | July 21, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,672
Series G Preferred Stock and Unit | November 4, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,672
Series G Preferred Stock and Unit | November 4, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   3,672
Series G Preferred Stock and Unit | February 25, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 $ 3,672  
Series G Preferred Stock and Unit | February 25, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 3,672  
Series G Preferred Stock and Unit | May 12, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 3,672  
Series G Preferred Stock and Unit | May 12, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 3,672  
Series G Preferred Stock and Unit | August 11, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 3,672  
Series G Preferred Stock and Unit | August 11, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 3,672  
Series G Preferred Stock and Unit | November 12, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 3,672  
Series G Preferred Stock and Unit | November 12, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 3,672  
Series G Preferred Stock and Unit | February 17, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 3,672    
Series G Preferred Stock and Unit | February 17, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,672    
Series G Preferred Stock and Unit | May 11, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,672    
Series G Preferred Stock and Unit | May 11, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,672    
Series G Preferred Stock and Unit | August 10, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,672    
Series G Preferred Stock and Unit | August 10, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,672    
Series G Preferred Stock and Unit | November 9, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,672    
Series G Preferred Stock and Unit | November 9, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,672    
Series H Preferred Stock and Unit                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 26,920 $ 26,920 20,564
Annual rate of dividend per share (in dollars per unit)       $ 1.84375       $ 1.84375    
Preferred stock, redemption price per share (in dollars per unit)               25.00    
Preferred Stock, liquidation preference per share/unit (in dollars per unit)       $ 25       $ 25 $ 25  
Series H Preferred Stock and Unit | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 26,920 $ 26,920 20,564
Annual rate of dividend per share (in dollars per unit)     $ 1.84375         $ 1.844    
Preferred stock, redemption price per share (in dollars per unit)               25.00    
Preferred Stock, liquidation preference per share/unit (in dollars per unit)     $ 25         $ 25 $ 25  
Series H Preferred Stock and Unit | February 11, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   0
Series H Preferred Stock and Unit | February 11, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   0
Series H Preferred Stock and Unit | April 29, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   7,104
Series H Preferred Stock and Unit | April 29, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   7,104
Series H Preferred Stock and Unit | July 21, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   6,730
Series H Preferred Stock and Unit | July 21, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   6,730
Series H Preferred Stock and Unit | November 4, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   6,730
Series H Preferred Stock and Unit | November 4, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   6,730
Series H Preferred Stock and Unit | February 25, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 $ 6,730  
Series H Preferred Stock and Unit | February 25, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 6,730  
Series H Preferred Stock and Unit | May 12, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 6,730  
Series H Preferred Stock and Unit | May 12, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 6,730  
Series H Preferred Stock and Unit | August 11, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 6,730  
Series H Preferred Stock and Unit | August 11, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 6,730  
Series H Preferred Stock and Unit | November 12, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 6,730  
Series H Preferred Stock and Unit | November 12, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 6,730  
Series H Preferred Stock and Unit | February 17, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 6,730    
Series H Preferred Stock and Unit | February 17, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               6,730    
Series H Preferred Stock and Unit | May 11, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               6,730    
Series H Preferred Stock and Unit | May 11, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               6,730    
Series H Preferred Stock and Unit | August 10, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               6,730    
Series H Preferred Stock and Unit | August 10, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               6,730    
Series H Preferred Stock and Unit | November 9, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               6,730    
Series H Preferred Stock and Unit | November 9, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               6,730    
Series I Preferred Stock and Unit                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 15,876 $ 5,600 0
Annual rate of dividend per share (in dollars per unit)               $ 1.588    
Preferred stock, redemption price per share (in dollars per unit)               25.00    
Preferred Stock, liquidation preference per share/unit (in dollars per unit)   $ 25.00           $ 25 $ 25  
Series I Preferred Stock and Unit | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 15,876 $ 5,600 0
Annual rate of dividend per share (in dollars per unit)   1.5875           $ 1.588    
Preferred Stock, liquidation preference per share/unit (in dollars per unit)   $ 25.00           $ 25 $ 25  
Series I Preferred Stock and Unit | February 11, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   0
Series I Preferred Stock and Unit | February 11, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   0
Series I Preferred Stock and Unit | April 29, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   0
Series I Preferred Stock and Unit | April 29, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   0
Series I Preferred Stock and Unit | July 21, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   0
Series I Preferred Stock and Unit | July 21, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   0
Series I Preferred Stock and Unit | November 4, 2014                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   0
Series I Preferred Stock and Unit | November 4, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                   0
Series I Preferred Stock and Unit | February 25, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 $ 0  
Series I Preferred Stock and Unit | February 25, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 0  
Series I Preferred Stock and Unit | May 12, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 0  
Series I Preferred Stock and Unit | May 12, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 0  
Series I Preferred Stock and Unit | August 11, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 0  
Series I Preferred Stock and Unit | August 11, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 0  
Series I Preferred Stock and Unit | November 12, 2015                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 5,600  
Series I Preferred Stock and Unit | November 12, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units                 5,600  
Series I Preferred Stock and Unit | February 17, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               $ 3,969    
Series I Preferred Stock and Unit | February 17, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,969    
Series I Preferred Stock and Unit | May 11, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,969    
Series I Preferred Stock and Unit | May 11, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,969    
Series I Preferred Stock and Unit | August 10, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,969    
Series I Preferred Stock and Unit | August 10, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,969    
Series I Preferred Stock and Unit | November 9, 2016                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,969    
Series I Preferred Stock and Unit | November 9, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, preferred stock/units               3,969    
Common Units | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, common stock/units               $ 539,044 $ 480,623 $ 454,414
Common stock dividend per share amount (in dollars per share)               $ 3.520 $ 3.400 $ 3.320
Common Units | February 11, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, common stock/units                   $ 109,378
Common Units | April 29, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, common stock/units                   115,008
Common Units | July 21, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, common stock/units                   115,012
Common Units | November 4, 2014 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, common stock/units                   $ 115,016
Common Units | February 25, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, common stock/units                 $ 117,896  
Common Units | May 12, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, common stock/units                 117,938  
Common Units | August 11, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, common stock/units                 117,962  
Common Units | November 12, 2015 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, common stock/units                 $ 126,827  
Common Units | February 17, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, common stock/units               $ 131,587    
Common Units | May 11, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, common stock/units               131,607    
Common Units | August 10, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, common stock/units               131,657    
Common Units | November 9, 2016 | Digital Realty Trust, L.P.                    
Dividends Payable [Line Items]                    
Dividends/Distributions, common stock/units               $ 144,193