CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues:
Storage rental	$ 718,272	$ 676,956	$ 1,426,328	$ 1,360,503
Service	401,484	305,283	775,468	690,467
Total Revenues	1,119,756	982,239	2,201,796	2,050,970
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	474,579	406,693	926,488	873,614
Selling, general and administrative	259,779	241,947	518,502	480,680
Depreciation and amortization	166,685	163,850	332,327	326,434
Acquisition and Integration Costs	2,277	0	2,277	0
Restructuring Charges	39,443	39,298	79,254	80,344
(Gain) Loss on disposal/write-down of property, plant and equipment, net	(128,935)	(1,275)	(133,386)	(2,330)
Total Operating Expenses	813,828	850,513	1,725,462	1,781,742
Operating Income (Loss)	305,928	131,726	476,334	269,228
Interest Expense, Net (includes Interest Income)	105,220	103,456	209,642	209,105
Other (Income) Expense, Net	(186,230)	25,700	(181,517)	(17,026)
Net Income (Loss) Before Provision (Benefit) for Income Taxes	386,938	2,570	448,209	77,149
Provision (Benefit) for Income Taxes	110,416	9,683	125,056	19,370
Net Income (Loss)	276,522	(7,113)	323,153	57,779
Less: Net Income (Loss) Attributable to Noncontrolling Interests	1,237	(27)	2,265	890
Net Income (Loss) Attributable to Iron Mountain Incorporated	$ 275,285	$ (7,086)	$ 320,888	$ 56,889
Net Income (Loss) Per Share Attributable to Iron Mountain Incorporated:
Income (Loss) from Continuing Operations, Basic (in dollars per share)	$ 0.95	$ (0.02)	$ 1.11	$ 0.20
Income (Loss) from Continuing Operations, Diluted (in dollars per share)	$ 0.95	$ (0.02)	$ 1.11	$ 0.20
Weighted Average Common Shares Outstanding-Basic (in shares)	289,247,000	288,071,000	289,001,000	287,955,000
Weighted Average Common Shares Outstanding-Diluted (in shares)	291,079,245	288,071,000	290,303,267	288,300,617