CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands								3 Months Ended		9 Months Ended
	Jul. 27, 2016	May 25, 2016	Feb. 18, 2016	Oct. 29, 2015	Aug. 27, 2015	May 28, 2015	Feb. 19, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues:
Storage rental								$ 576,465	$ 460,052	$ 1,576,358	$ 1,380,133
Service								366,357	286,477	1,000,902	875,416
Total Revenues								942,822	746,529	2,577,260	2,255,549
Operating Expenses:
Cost of sales (excluding depreciation and amortization)								429,808	317,663	1,151,562	965,600
Selling, general and administrative								252,944	215,693	737,787	627,992
Depreciation and amortization								124,670	86,492	326,896	259,992
(Gain) Loss on disposal/write-down of property, plant and equipment (excluding real estate), net								(54)	(141)	(1,131)	707
Total Operating Expenses								807,368	619,707	2,215,114	1,854,291
Operating Income (Loss)								135,454	126,822	362,146	401,258
Interest Expense (Income), Net								83,300	65,135	225,228	196,120
Other Expense (Income), Net								23,302	35,246	37,006	59,599
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes and Gain on Sale of Real Estate								28,852	26,441	99,912	145,539
Provision (Benefit) for Income Taxes								23,418	3,774	46,157	27,126
Gain on Sale of Real Estate, Net of Tax								(325)	(850)	(325)	(850)
Income (Loss) from Continuing Operations								5,759	23,517	54,080	119,263
Income (loss) from discontinued operations, net of tax								2,041	0	3,628	0
Net income (loss)								7,800	23,517	57,708	119,263
Less: Net Income (Loss) Attributable to Noncontrolling Interests								720	407	1,822	1,727
Net Income (Loss) Attributable to Iron Mountain Incorporated								$ 7,080	$ 23,110	$ 55,886	$ 117,536
Earnings (Losses) per Share—Basic:
Income (Loss) from Continuing Operations								$ 0.02	$ 0.11	$ 0.22	$ 0.57
Total Income (Loss) from Discontinued Operations, Net of Tax, per Basic Share								0.01	0.00	0.02	0.00
Net Income (Loss) Attributable to Iron Mountain Incorporated								0.03	0.11	0.23	0.56
Earnings (Losses) per Share-Diluted:
Income (Loss) from Continuing Operations								0.02	0.11	0.22	0.56
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share								0.01	0.00	0.02	0.00
Net Income (Loss) Attributable to Iron Mountain Incorporated								$ 0.03	$ 0.11	$ 0.23	$ 0.55
Weighted Average Common Shares Outstanding-Basic (in shares)								263,269,000	210,912,000	240,394,000	210,616,000
Weighted Average Common Shares Outstanding-Diluted (in shares)								264,501,975	211,916,610	241,519,921	212,080,805
Dividends Declared per Common Share (in dollars per share)	$ 0.485	$ 0.4850	$ 0.4850	$ 0.4850	$ 0.4750	$ 0.4750	$ 0.4750	$ 0.4852	$ 0.4751000	$ 1.4886	$ 1.4250