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Earnings per Common Share or Unit - Narrative (Details) - Unsecured senior notes - 1.875% notes due 2029 - Digital Realty Trust, L.P. - USD ($)	1 Months Ended
	Nov. 30, 2024	Sep. 30, 2025	Dec. 31, 2024
Earnings per Common Share or Unit
Aggregate principal amount	$ 1,150,000,000	$ 1,150,000,000
Interest rate	1.875%	1.875%	1.875%
Net proceeds from offering	$ 1,100,000,000

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