Earnings per Common Share or Unit - Summary of Basic and Diluted Earnings per Share and Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended			6 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2024	Sep. 30, 2023	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2023	Dec. 31, 2023
Numerator:
Net income available to common stockholders	$ 70,039		$ 108,003	$ 341,366	$ 166,548
Loss attributable to redeemable noncontrolling interest	(4,865)		(4,499)	(12,514)	(6,819)
Net income available to common stockholders - diluted EPS	$ 65,174		$ 103,504	$ 328,852	$ 159,729
Denominator:
Weighted average units outstanding-basic (shares/units)	319,537		295,390	315,915	293,316
Potentially dilutive common shares/units:
Unvested incentive units (shares/units)	70		46	69	51
Unvested restricted stock (shares/units)	112		6	107	6
Forward equity offering (shares/units)			60		169
Market performance-based awards (shares/units)	222		102	292	51
Redeemable noncontrolling interest shares (shares/units)	8,005		11,215	8,068	10,859
Weighted average shares/units outstanding-diluted (shares/units)	327,946		306,819	324,451	304,452
Income per unit:
Basic (in dollars per share)	$ 0.22		$ 0.37	$ 1.08	$ 0.57
Diluted (in dollars per share)	$ 0.20	$ 2.31	$ 0.34	$ 1.01	$ 0.52	$ 2.87	$ 2.88
Teraco
Income per unit:
Period for right to sell all or a portion of interest to company, beginning on February 1, 2026 (in years)				2 years
Digital Realty Trust, L.P.
Numerator:
Net income available to common stockholders	$ 71,539		$ 110,503	$ 349,066	$ 170,548
Loss attributable to redeemable noncontrolling interest	(4,865)		(4,499)	(12,514)	(6,819)
Net income available to common stockholders - diluted EPS	$ 66,674		$ 106,004	$ 336,552	$ 163,729
Denominator:
Weighted average units outstanding-basic (shares/units)	325,777		301,593	322,151	299,452
Potentially dilutive common shares/units:
Unvested incentive units (shares/units)	70		46	69	51
Unvested restricted stock (shares/units)	112		6	107	6
Forward equity offering (shares/units)			60		169
Market performance-based awards (shares/units)	222		102	292	51
Redeemable noncontrolling interest shares (shares/units)	8,005		11,215	8,068	10,859
Weighted average shares/units outstanding-diluted (shares/units)	334,186		313,022	330,687	310,588
Income per unit:
Basic (in dollars per share)	$ 0.22		$ 0.37	$ 1.08	$ 0.57
Diluted (in dollars per share)	$ 0.20	$ 2.32	$ 0.34	$ 1.01	$ 0.53	$ 2.88	$ 2.89