Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount of equity (deficit) attributable to noncontrolling interest. Excludes temporary equity.

+ References

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+ Details

Stockholders' Equity Matters - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Aug. 05, 2026	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025
Debt Instrument [Line Items]
Dividend per share (in dollars per share)		$ 0.864	$ 0.864	$ 0.864	$ 0.785	$ 0.785	$ 0.785
Noncontrolling Interests		$ 325,915		$ 271,676
Iron Mountain Data Centers Virginia 9 JV, LP
Debt Instrument [Line Items]
Noncontrolling Interests		$ 49,900
Subsequent Event
Debt Instrument [Line Items]
Dividend per share (in dollars per share)	$ 0.864