CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Current Assets:
Cash and cash equivalents	$ 158,535	$ 155,716
Accounts receivable (less allowances of $107,838 and $86,712 as of December 31, 2025 and 2024, respectively)	1,443,669	1,291,379
Prepaid expenses and other	332,779	244,127
Total Current Assets	1,934,983	1,691,222
Property, Plant and Equipment:
Property, plant and equipment	14,457,335	11,985,997
Less—Accumulated depreciation	(4,911,010)	(4,354,398)
Property, Plant and Equipment, Net	9,546,325	7,631,599
Other Assets, Net:
Goodwill	5,285,801	5,083,817
Customer and supplier relationships and other intangible assets	1,269,607	1,274,731
Operating lease right-of-use assets	2,465,196	2,489,893
Other	623,107	545,853
Total Other Assets, Net	9,643,711	9,394,294
Total Assets	21,125,019	18,717,115
Current Liabilities:
Current portion of long-term debt	216,074	715,109
Accounts payable	710,662	678,716
Accrued expenses and other current liabilities (includes current portion of operating lease liabilities)	1,290,669	1,366,568
Deferred revenue	402,091	326,882
Total Current Liabilities	2,619,496	3,087,275
Long-term Debt, net of current portion	16,215,885	13,003,977
Long-term Operating Lease Liabilities, net of current portion	2,300,448	2,334,826
Other Long-term Liabilities	450,083	312,199
Deferred Income Taxes	184,015	205,341
Commitments and Contingencies
Redeemable Noncontrolling Interests	64,423	78,171
Iron Mountain Incorporated Stockholders’ (Deficit) Equity:
Preferred stock (par value $0.01; authorized 10,000,000 shares; none issued and outstanding)	0	0
Common stock (par value $0.01; authorized 400,000,000 shares; issued and outstanding 295,788,645 shares and 293,592,637 shares as of December 31, 2025 and 2024, respectively)	2,958	2,936
Additional paid-in capital	4,790,190	4,647,330
(Distributions in excess of earnings) Earnings in excess of distributions	(5,405,147)	(4,583,436)
Accumulated other comprehensive items, Net	(369,008)	(569,952)
Total Iron Mountain Incorporated Stockholders’ (Deficit) Equity	(981,007)	(503,122)
Noncontrolling Interests	271,676	198,448
Total (Deficit) Equity	(709,331)	(304,674)
Total Liabilities and (Deficit) Equity	$ 21,125,019	$ 18,717,115