Debt - Summary of Outstanding Indebtedness (Details) - Digital Realty Trust, L.P. - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument
Weighted-average interest rate	2.30%	2.38%
Amount Outstanding	$ 13,371,342	$ 13,413,013
Global revolving credit facilities
Debt Instrument
Weighted-average interest rate	0.98%	0.91%
Amount Outstanding	$ 458,343	$ 540,184
Unsecured term loans
Debt Instrument
Weighted-average interest rate		1.20%
Amount Outstanding		$ 537,470
Unsecured senior notes
Debt Instrument
Weighted-average interest rate	2.33%	2.49%
Amount Outstanding	$ 12,672,889	$ 12,096,029
Unsecured senior notes | 0.125% notes due 2022
Debt Instrument
Amount Outstanding	351,900	366,480
Unsecured senior notes | 2.750% notes due 2023
Debt Instrument
Amount Outstanding		350,000
Unsecured senior notes | 2.625% notes due 2024
Debt Instrument
Amount Outstanding	703,800	732,960
Unsecured senior notes | 2.750% notes due 2024
Debt Instrument
Amount Outstanding	344,575	341,750
Unsecured senior notes | 4.250% notes due 2025
Debt Instrument
Amount Outstanding	551,320	546,800
Unsecured senior notes | 0.625% notes due 2025
Debt Instrument
Amount Outstanding	762,450	794,040
Unsecured senior notes | 2.500% notes due 2026
Debt Instrument
Amount Outstanding	1,260,974	1,313,219
Unsecured senior notes | 3.700% notes due 2027
Debt Instrument
Amount Outstanding	1,000,000	1,000,000
Unsecured senior notes | 1.125% notes due 2028
Debt Instrument
Amount Outstanding	586,500	610,800
Unsecured senior notes | 4.450% notes due 2028
Debt Instrument
Amount Outstanding	650,000	650,000
Unsecured senior notes | 3.600% notes due 2029
Debt Instrument
Amount Outstanding	900,000	900,000
Unsecured senior notes | 3.300% notes due 2029
Debt Instrument
Amount Outstanding	482,405	478,450
Unsecured senior notes | 3.750% notes due 2030
Debt Instrument
Amount Outstanding	758,065	$ 751,850
Senior Notes.
Debt Instrument
Amount Outstanding	$ 12,672,889
Secured debt
Debt Instrument
Weighted-average interest rate	2.96%	2.92%
Amount Outstanding	$ 240,110	$ 239,330