Debt of the Operating Partnership - Narrative (Details) $ in Millions			9 Months Ended
	Jan. 09, 2023 USD ($) Option	Aug. 11, 2022 EUR (€) Option	Sep. 30, 2023 EUR (€) Option	Sep. 30, 2023 USD ($)	Sep. 08, 2023 EUR (€)
Term Loan Facility | Digital Realty Trust, L.P.
Debt Instrument
Aggregate principal amount | $	$ 740
Number of extension option | Option	1
Maturity extension option term	12 months
Percentage of extension fee	0.1875%
Debt face amount | $	$ 740
Unsecured senior notes | Digital Realty Trust, L.P. | Maximum
Debt Instrument
Leverage ratio			60.00%
Secured debt leverage ratio			40.00%
Unsecured senior notes | Digital Realty Trust, L.P. | Minimum
Debt Instrument
Interest coverage ratio			1.50
Total unencumbered assets			150.00%
Unsecured term loans | Digital Realty Trust, L.P.
Debt Instrument
Aggregate principal amount			€ 375,000,000.0
Number of extension option | Option			2
Maturity extension option term			1 year
Percentage of extension fee			12.50%	12.50%
Debt face amount			€ 375,000,000.0
Unsecured term loans | 2025 Term Facility | Digital Realty Trust, L.P.
Debt Instrument
Aggregate principal amount		€ 375,000,000
Debt instrument term		3 years
Debt face amount		€ 375,000,000
Unsecured term loans | 2025-27 Term Facility | Digital Dutch Finco B.V.
Debt Instrument
Number of extension options | Option		2
Debt instrument, extension term		1 year
Percentage of extension fee		0.125%
Unsecured term loans | 2025-27 Term Facility | Digital Realty Trust, L.P.
Debt Instrument
Aggregate principal amount		€ 375,000,000
Debt instrument term		5 years
Debt face amount		€ 375,000,000
Unsecured term loans | Initial Term Loan | Digital Dutch Finco B.V.
Debt Instrument
Aggregate principal amount					€ 125,000,000
Debt face amount					125,000,000
Unsecured term loans | Delayed Draw Term Loan
Debt Instrument
Aggregate principal amount					250,000,000
Debt face amount					€ 250,000,000
U.S. Term Loan | Digital Realty Trust, L.P.
Debt Instrument
Aggregate principal amount | $				$ 740
Number of extension option | Option			1
Maturity extension option term			12 months
Percentage of extension fee			18.75%	18.75%
Debt face amount | $				$ 740