Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Percentage of income distributed (at least)			100.00%
Provision for income taxes	$ 16,053,000	$ 4,826,000	$ 34,725,000	$ 13,726,000
Net deferred tax liability	703,100,000		703,100,000		$ 143,400,000
Federal
Operating Loss Carryforwards [Line Items]
Provision for income taxes	0	0	0	0
Digital Realty Trust, L.P.
Operating Loss Carryforwards [Line Items]
Provision for income taxes	$ 16,053,000	$ 4,826,000	34,725,000	$ 13,726,000
Digital Realty Trust, L.P. | Federal
Operating Loss Carryforwards [Line Items]
Provision for income taxes			$ 0