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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 45,152	$ 58,507
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	31,651	50,784
Change in Fair Value of Interest Rate Swap Agreements	(185)	0
Total Other Comprehensive Income (Loss)	31,466	50,784
Comprehensive Income (Loss)	76,618	109,291
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	2,027	(168)
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$ 74,591	$ 109,459

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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