CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues:
Revenues	$ 1,062,224	$ 1,060,991	$ 3,182,994	$ 3,164,272
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	451,317	448,018	1,377,963	1,348,203
Selling, general and administrative	239,156	259,929	762,479	789,324
Depreciation and amortization	157,561	157,797	484,375	474,595
(Gain) Loss on disposal/write-down of property, plant and equipment, net (see Notes 2.j. and 2.m.)	(9,284)	(388)	(17,087)	(2,064)
Total Operating Expenses	838,750	865,356	2,607,730	2,610,058
Operating Income (Loss)	223,474	195,635	575,264	554,214
Interest Expense, Net (includes Interest Income)	106,677	103,938	314,427	303,836
Other (Income) Expense, Net	(13,415)	325	(13,397)	1,420
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	130,212	91,372	274,234	248,958
Provision (Benefit) for Income Taxes	21,928	14,023	43,127	39,957
Income (Loss) from Continuing Operations	108,284	77,349	231,107	209,001
(Loss) Income from Discontinued Operations, Net of Tax	0	(11,605)	104	(12,427)
Net Income (Loss)	108,284	65,744	231,211	196,574
Less: Net Income (Loss) Attributable to Noncontrolling Interests	609	(125)	1,534	485
Net Income (Loss) Attributable to Iron Mountain Incorporated	$ 107,675	$ 65,869	$ 229,677	$ 196,089
Earnings (Losses) per Share—Basic:
Income (Loss) from Continuing Operations (in dollars per share)	$ 0.37	$ 0.27	$ 0.80	$ 0.73
Total (Loss) Income from Discontinued Operations, Net of Tax (in dollars per share)	0	(0.04)	0	(0.04)
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)	0.37	0.23	0.80	0.69
Earnings (Losses) per Share—Diluted:
Income (Loss) from Continuing Operations (in dollars per share)	0.37	0.27	0.80	0.73
Total (Loss) Income from Discontinued Operations, Net of Tax (in dollars per share)	0	(0.04)	0	(0.04)
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)	$ 0.37	$ 0.23	$ 0.80	$ 0.68
Weighted Average Common Shares Outstanding-Basic (in shares)	287,152,000	286,159,000	286,869,000	285,801,000
Weighted Average Common Shares Outstanding-Diluted (in shares)	287,690,833	286,982,342	287,555,315	286,515,157
Storage rental
Revenues:
Revenues	$ 673,318	$ 656,973	$ 2,005,580	$ 1,963,561
Service
Revenues:
Revenues	$ 388,906	$ 404,018	$ 1,177,414	$ 1,200,711