Equity and Capital - Summary of Activity For Noncontrolling Interests in The Operating Partnership (Details) shares in Thousands	9 Months Ended
	Sep. 30, 2023 shares
Common And Incentive Unit Activity [Roll Forward]
Beginning balance (units)	6,289
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock (units)	(77)
Incentive units issued upon achievement of market performance condition (units)	141
Grant of incentive units to employees and directors (units)	166
Cancellation / forfeitures of incentive units held by employees and directors (units)	(40)
Ending balance (units)	6,479
Common Units
Common And Incentive Unit Activity [Roll Forward]
Beginning balance (units)	4,375
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock (units)	(32)
Incentive units issued upon achievement of market performance condition (units)	0
Grant of incentive units to employees and directors (units)	0
Cancellation / forfeitures of incentive units held by employees and directors (units)	0
Ending balance (units)	4,343
Incentive Units
Common And Incentive Unit Activity [Roll Forward]
Beginning balance (units)	1,914
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock (units)	(45)
Incentive units issued upon achievement of market performance condition (units)	141
Grant of incentive units to employees and directors (units)	166
Cancellation / forfeitures of incentive units held by employees and directors (units)	(40)
Ending balance (units)	2,136