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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 64,892	$ 30,452
Other Comprehensive (Loss) Income:
Foreign Currency Translation Adjustment	(223,652)	18,191
Change in Fair Value of Derivative Instruments	(8,362)	(2,674)
Total Other Comprehensive (Loss) Income	(232,014)	15,517
Comprehensive (Loss) Income	(167,122)	45,969
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	(430)	1,704
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$ (166,692)	$ 44,265

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