Equity and Capital - Noncontrolling Interests in Operating Partnership (Details) - USD ($) shares in Thousands, $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Class of Stock
Number of units (units)	312,421	311,608
Percentage of total	97.90%	98.00%
Common stock conversion ratio	1
Digital Realty Trust, L.P.
Class of Stock
Redeemable noncontrolling interests - operating partnership	$ 906.0	$ 834.1
Common units held by third parties
Class of Stock
Common units held by third parties (units)	4,343	4,343
Percentage of total	1.40%	1.30%
Incentive units held by employees and directors (see Note 13. Incentive Plan)
Class of Stock
Incentive units held by employees and directors (units)	2,245	2,106
Percentage of total	0.70%	0.70%
Noncontrolling Interests in Operating Partnership
Class of Stock
Number of units (units)	319,009	318,057
Percentage of total	100.00%	100.00%