Earnings per Common Share or Unit - Summary of Basic and Diluted Earnings per Share and Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Class of Stock
Net income available to common stockholders	$ 53,246	$ 127,369	$ 116,346	$ 499,775
Weighted average units outstanding-basic (shares/units)	284,694	281,792	284,610	281,445
Potentially dilutive common shares/units:
Unvested incentive units (shares/units)	178	177	183	168
Unvested restricted stock (shares/units)	49	165	62	143
Market performance-based awards (shares/units)	189	300	125	320
Weighted average shares/units outstanding-diluted (shares/units)	285,110	282,434	284,980	282,076
Income per share/unit:
Basic (in dollars per share/unit)	$ 0.19	$ 0.45	$ 0.41	$ 1.78
Diluted (in dollars per share/unit)	$ 0.19	$ 0.45	$ 0.41	$ 1.77
Digital Realty Trust, L.P.
Class of Stock
Net income available to common stockholders	$ 54,746	$ 130,569	$ 119,446	$ 512,775
Weighted average units outstanding-basic (shares/units)	290,528	288,843	290,346	288,588
Potentially dilutive common shares/units:
Unvested incentive units (shares/units)	178	177	183	168
Unvested restricted stock (shares/units)	49	165	62	143
Market performance-based awards (shares/units)	189	300	125	320
Weighted average shares/units outstanding-diluted (shares/units)	290,944	289,485	290,716	289,219
Income per share/unit:
Basic (in dollars per share/unit)	$ 0.19	$ 0.45	$ 0.41	$ 1.78
Diluted (in dollars per share/unit)	$ 0.19	$ 0.45	$ 0.41	$ 1.77