10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 10-Q

(Mark One)
ý	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the Quarterly Period Ended March 31, 2017
OR
o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the Transition Period from                        to
Commission file number 1-13045

IRON MOUNTAIN INCORPORATED

(Exact Name of Registrant as Specified in Its Charter)

Delaware (State or other Jurisdiction of Incorporation or Organization) 23-2588479 (I.R.S. Employer Identification No.)

One Federal Street, Boston, Massachusetts 02110

(Address of Principal Executive Offices, Including Zip Code)

(617) 535-4766

(Registrant's Telephone Number, Including Area Code)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý    No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ý    No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer", "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer ý Accelerated filer o Non-accelerated filer o  (Do not check if a smaller reporting company) Smaller reporting company o Emerging growth company o

If emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o    No ý

Number of shares of the registrant's Common Stock outstanding at April 21, 2017: 264,116,522

IRON MOUNTAIN INCORPORATED

Index

	Page
PART I—FINANCIAL INFORMATION
Item 1—Unaudited Consolidated Financial Statements	3
Consolidated Balance Sheets at December 31, 2016 and March 31, 2017 (Unaudited)	3
Consolidated Statements of Operations for the Three Months Ended March 31, 2016 and 2017 (Unaudited)	4
Consolidated Statements of Comprehensive Income (Loss) for the Three Months Ended March 31, 2016 and 2017 (Unaudited)	5
Consolidated Statements of Equity for the Three Months Ended March 31, 2016 and 2017 (Unaudited)	6
Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2016 and 2017 (Unaudited)	7
Notes to Consolidated Financial Statements (Unaudited)	8
Item 2—Management's Discussion and Analysis of Financial Condition and Results of Operations	45
Item 4—Controls and Procedures	71
PART II—OTHER INFORMATION
Item 2—Unregistered Sales of Equity Securities and Use of Proceeds	71
Item 6—Exhibits	72
Signatures	73

2

Part I. Financial Information

Item 1.    Unaudited Consolidated Financial Statements

IRON MOUNTAIN INCORPORATED

CONSOLIDATED BALANCE SHEETS

(In Thousands, except Share and Per Share Data)

(Unaudited)

	December 31, 2016			March 31, 2017
ASSETS
Current Assets:
Cash and cash equivalents	$	236,484		$	295,628
Accounts receivable (less allowances of $44,290 and $40,690 as of December 31, 2016 and March 31, 2017, respectively)	691,249			721,030
Prepaid expenses and other	184,374			181,979
Total Current Assets	1,112,107			1,198,637
Property, Plant and Equipment:
Property, plant and equipment	5,535,783			5,662,272
Less—Accumulated depreciation	(2,452,457		)	(2,550,532		)
Property, Plant and Equipment, Net	3,083,326			3,111,740
Other Assets, Net:
Goodwill	3,905,021			3,957,058
Customer relationships and customer inducements	1,252,523			1,276,929
Other	133,823			127,770
Total Other Assets, Net	5,291,367			5,361,757
Total Assets	$	9,486,800		$	9,672,134
LIABILITIES AND EQUITY
Current Liabilities:
Current portion of long-term debt	$	172,975		$	421,227
Accounts payable	222,197			239,894
Accrued expenses	450,257			533,647
Deferred revenue	201,128			223,701
Total Current Liabilities	1,046,557			1,418,469
Long-term Debt, net of current portion	6,078,206			5,922,748
Other Long-term Liabilities	99,540			86,583
Deferred Rent	119,834			121,938
Deferred Income Taxes	151,295			151,314
Commitments and Contingencies (see Note 8)
Redeemable Noncontrolling Interests	54,697			67,308
Equity:
Iron Mountain Incorporated Stockholders' Equity:
Preferred stock (par value $0.01; authorized 10,000,000 shares; none issued and outstanding)	—			—
Common stock (par value $0.01; authorized 400,000,000 shares; issued and outstanding 263,682,670 shares and 264,110,388 shares as of December 31, 2016 and March 31, 2017, respectively)	2,636			2,641
Additional paid-in capital	3,489,795			3,491,936
(Distributions in excess of earnings) Earnings in excess of distributions	(1,343,311		)	(1,430,613		)
Accumulated other comprehensive items, net	(212,573		)	(161,239		)
Total Iron Mountain Incorporated Stockholders' Equity	1,936,547			1,902,725
Noncontrolling Interests	124			1,049
Total Equity	1,936,671			1,903,774
Total Liabilities and Equity	$	9,486,800		$	9,672,134

The accompanying notes are an integral part of these consolidated financial statements.

3

IRON MOUNTAIN INCORPORATED

CONSOLIDATED STATEMENTS OF OPERATIONS

(In Thousands, except Per Share Data)

(Unaudited)

	Three Months Ended March 31,
	2016			2017
Revenues:
Storage rental	$	461,211		$	572,279
Service	289,479			366,597
Total Revenues	750,690			938,876
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	326,105			426,707
Selling, general and administrative	207,766			240,166
Depreciation and amortization	87,204			124,707
(Gain) Loss on disposal/write-down of property, plant and equipment (excluding real estate), net	(451		)	(459		)
Total Operating Expenses	620,624			791,121
Operating Income (Loss)	130,066			147,755
Interest Expense, Net (includes Interest Income of $1,287 and $2,293 for the three months ended March 31, 2016 and 2017, respectively)	67,062			86,055
Other (Income) Expense, Net	(11,937		)	(6,364		)
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	74,941			68,064
Provision (Benefit) for Income Taxes	11,900			9,220
Income (Loss) from Continuing Operations	63,041			58,844
(Loss) Income from Discontinued Operations, Net of Tax	—			(337		)
Net Income (Loss)	63,041			58,507
Less: Net Income (Loss) Attributable to Noncontrolling Interests	267			382
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	62,774		$	58,125
Earnings (Losses) per Share—Basic:
Income (Loss) from Continuing Operations	$	0.30		$	0.22
Total Income (Loss) from Discontinued Operations, Net of Tax	$	—		$	—
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	0.30		$	0.22
Earnings (Losses) per Share—Diluted:
Income (Loss) from Continuing Operations	$	0.30		$	0.22
Total Income (Loss) from Discontinued Operations, Net of Tax	$	—		$	—
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	0.30		$	0.22
Weighted Average Common Shares Outstanding—Basic	211,526			263,855
Weighted Average Common Shares Outstanding—Diluted	212,471			264,810
Dividends Declared per Common Share	$	0.4853		$	0.5504

The accompanying notes are an integral part of these consolidated financial statements.

4

IRON MOUNTAIN INCORPORATED

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(In Thousands)

(Unaudited)

	Three Months Ended March 31,
	2016			2017
Net Income (Loss)	$	63,041		$	58,507
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	23,978			50,784
Market Value Adjustments for Securities	(734		)	—
Total Other Comprehensive Income (Loss)	23,244			50,784
Comprehensive Income (Loss)	86,285			109,291
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	754			(168		)
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	85,531		$	109,459

 The accompanying notes are an integral part of these consolidated financial statements.

5

IRON MOUNTAIN INCORPORATED

CONSOLIDATED STATEMENTS OF EQUITY

(In Thousands, except Share Data)

(Unaudited)

				Iron Mountain Incorporated Stockholders' Equity
				Common Stock			Additional Paid-in Capital		(Distributions in Excess of Earnings) Earnings in Excess of Distributions						Noncontrolling Interests
	Total			Shares	Amounts							Accumulated Other Comprehensive Items, Net						Redeemable Noncontrolling Interests
Balance, December 31, 2015	$	528,607		211,340,296	$	2,113	$	1,623,863	$	(942,218	)	$	(174,917	)	$	19,766		$	—
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	5,114			552,458	6		5,108		—			—			—			—
Parent cash dividends declared	(103,088		)	—	—		—		(103,088		)	—			—			—
Foreign currency translation adjustment	23,978			—	—		—		—			23,491			487			—
Market value adjustments for securities	(734		)	—	—		—		—			(734		)	—			—
Net income (loss)	63,041			—	—		—		62,774			—			267			—
Noncontrolling interests equity contributions	1,299			—	—		—		—			—			1,299			—
Noncontrolling interests dividends	(579		)	—	—		—		—			—			(579		)	—
Purchase of noncontrolling interests	3,506			—	—		—		—			—			3,506			—
Balance, March 31, 2016	$	521,144		211,892,754	$	2,119	$	1,628,971	$	(982,532	)	$	(152,160	)	$	24,746		$	—

				Iron Mountain Incorporated Stockholders' Equity
				Common Stock			Additional Paid-in Capital			(Distributions in Excess of Earnings) Earnings in Excess of Distributions						Noncontrolling Interests
	Total			Shares	Amounts								Accumulated Other Comprehensive Items, Net						Redeemable Noncontrolling Interests
Balance, December 31, 2016	$	1,936,671		263,682,670	$	2,636	$	3,489,795		$	(1,343,311	)	$	(212,573	)	$	124		$	54,697
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	2,453			427,718	5		2,448			—			—			—			—
Change in value of redeemable noncontrolling interests	(307		)	—	—		(307		)	—			—			—			307
Parent cash dividends declared	(145,427		)	—	—		—			(145,427		)	—			—			—
Foreign currency translation adjustment	51,405			—	—		—			—			51,334			71			(621		)
Net income (loss)	58,350			—	—		—			58,125			—			225			157
Noncontrolling interests equity contributions	—			—	—		—			—			—			—			13,230
Noncontrolling interests dividends	(214		)	—	—		—			—			—			(214		)	(462		)
Purchase of noncontrolling interests	843			—	—		—			—			—			843			—
Balance, March 31, 2017	$	1,903,774		264,110,388	$	2,641	$	3,491,936		$	(1,430,613	)	$	(161,239	)	$	1,049		$	67,308

The accompanying notes are an integral part of these consolidated financial statements.

6

IRON MOUNTAIN INCORPORATED

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In Thousands)

(Unaudited)

	Three Months Ended March 31,
	2016			2017
Cash Flows from Operating Activities:
Net income (loss)	$	63,041		$	58,507
Loss (Income) from discontinued operations	—			337
Adjustments to reconcile net income (loss) to cash flows from operating activities:
Depreciation	75,390			99,592
Amortization (includes amortization of deferred financing costs and discount of $2,749 and $3,907 for the three months ended March 31, 2016 and 2017, respectively)	14,563			29,022
Revenue reduction associated with amortization of permanent withdrawal fees	2,943			3,158
Stock-based compensation expense	6,885			6,549
(Benefit) Provision for deferred income taxes	(6,012		)	(7,386		)
(Gain) Loss on disposal/write-down of property, plant and equipment, net (including real estate)	(451		)	(459		)
Foreign currency transactions and other, net	(11,477		)	(786		)
Changes in Assets and Liabilities (exclusive of acquisitions):
Accounts receivable	(8,151		)	(8,971		)
Prepaid expenses and other	30,297			(24,826		)
Accounts payable	(30,934		)	5,869
Accrued expenses and deferred revenue	(55,494		)	(36,112		)
Other assets and long-term liabilities	518			(2,320		)
Cash Flows from Operating Activities - Continuing Operations	81,118			122,174
Cash Flows from Operating Activities - Discontinued Operations	—			(337		)
Cash Flows from Operating Activities	81,118			121,837
Cash Flows from Investing Activities:
Capital expenditures	(80,852		)	(73,202		)
Cash paid for acquisitions, net of cash acquired	(19,340		)	(12,187		)
Acquisition of customer relationships	(6,132		)	(17,132		)
Customer inducements	(1,126		)	(4,271		)
Net proceeds from Iron Mountain Divestments (see Note 10)	—			2,423
Proceeds from sales of property and equipment and other, net (including real estate)	169			66
Cash Flows from Investing Activities - Continuing Operations	(107,281		)	(104,303		)
Cash Flows from Investing Activities - Discontinued Operations	—			—
Cash Flows from Investing Activities	(107,281		)	(104,303		)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(2,384,215		)	(2,682,348		)
Proceeds from revolving credit and term loan facilities and other debt	2,509,845			2,714,783
Debt financing and equity contribution from noncontrolling interests	1,299			13,230
Debt repayment and equity distribution to noncontrolling interests	(414		)	(2,562		)
Parent cash dividends	(104,931		)	(2,060		)
Net (payments) proceeds associated with employee stock-based awards	(1,975		)	(4,308		)
Excess tax (deficiency) benefits from stock-based compensation	(348		)	—
Payment of debt financing and stock issuance costs	—			(73		)
Cash Flows from Financing Activities - Continuing Operations	19,261			36,662
Cash Flows from Financing Activities - Discontinued Operations	—			—
Cash Flows from Financing Activities	19,261			36,662
Effect of Exchange Rates on Cash and Cash Equivalents	(3,534		)	4,948
(Decrease) Increase in Cash and Cash Equivalents	(10,436		)	59,144
Cash and Cash Equivalents, Beginning of Period	128,381			236,484
Cash and Cash Equivalents, End of Period	$	117,945		$	295,628
Supplemental Information:
Cash Paid for Interest	$	83,942		$	99,022
(Refund Received) Cash Paid for Income Taxes, Net	$	(3,211	)	$	30,422
Non-Cash Investing and Financing Activities:
Capital Leases	$	18,005		$	24,395
Accrued Capital Expenditures	$	42,205		$	63,655
Dividends Payable	$	3,736		$	148,992

The accompanying notes are an integral part of these consolidated financial statements.

7

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(1) General

The interim consolidated financial statements are presented herein and, in the opinion of management, reflect all adjustments of a normal recurring nature necessary for a fair presentation. Interim results are not necessarily indicative of results for a full year. Iron Mountain Incorporated, a Delaware corporation ("IMI"), and its subsidiaries ("we" or "us") store records, primarily physical records and data backup media, and provide information management services in various locations throughout North America, Europe, Latin America, Asia and Africa. We have a diversified customer base consisting of commercial, legal, financial, healthcare, insurance, life sciences, energy, business services, entertainment and government organizations.

The unaudited consolidated financial statements have been prepared pursuant to the rules and regulations of the United States Securities and Exchange Commission (the "SEC"). Certain information and footnote disclosures normally included in the annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") have been omitted pursuant to those rules and regulations, but we believe that the disclosures included herein are adequate to make the information presented not misleading. The Consolidated Financial Statements and Notes thereto, which are included herein, should be read in conjunction with the Consolidated Financial Statements and Notes thereto for the year ended December 31, 2016 included in our Annual Report on Form 10-K filed with the SEC on February 23, 2017 (our "Annual Report").

We have been organized and operating as a real estate investment trust for United States federal income tax purposes ("REIT") effective for our taxable year beginning January 1, 2014.

On May 2, 2016 (Sydney, Australia time), we completed the acquisition of Recall Holdings Limited ("Recall") pursuant to the Scheme Implementation Deed, as amended, with Recall (the "Recall Transaction"). See Note 4.

(2) Summary of Significant Accounting Policies

This Note 2 to Notes to Consolidated Financial Statements provides information and disclosure regarding certain of our significant accounting policies and should be read in conjunction with Note 2 to Notes to Consolidated Financial Statements included in our Annual Report, which may provide additional information with regard to the accounting policies set forth herein and other of our significant accounting policies.

a. Foreign Currency

Local currencies are the functional currencies for our operations outside the United States, with the exception of certain foreign holding companies and our financing centers in Europe, whose functional currency is the United States dollar. In those instances where the local currency is the functional currency, assets and liabilities are translated at period-end exchange rates, and revenues and expenses are translated at average exchange rates for the applicable period. Resulting translation adjustments are reflected in the accumulated other comprehensive items, net component of Iron Mountain Incorporated Stockholders' Equity, Redeemable Noncontrolling Interests and Noncontrolling Interests in the accompanying Consolidated Balance Sheets. The gain or loss on foreign currency transactions, calculated as the difference between the historical exchange rate and the exchange rate at the applicable measurement date, including those related to (i) borrowings in certain foreign currencies under our Revolving Credit Facility (as defined in Note 5) and (ii) certain foreign currency denominated intercompany obligations of our foreign subsidiaries to us and between our foreign subsidiaries, which are not considered permanently invested, are included in Other (Income) Expense, Net, in the accompanying Consolidated Statements of Operations.

Total (gain) loss on foreign currency transactions for the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016			2017
Total (gain) loss on foreign currency transactions	$	(12,542	)	$	(4,164	)

8

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

b.    Goodwill and Other Intangible Assets

Goodwill

Goodwill is not amortized but is reviewed annually for impairment, or more frequently if impairment indicators arise. We have selected October 1 as our annual goodwill impairment review date. We performed our most recent annual goodwill impairment review as of October 1, 2016 and concluded there was no impairment of goodwill at such date. As of December 31, 2016 and March 31, 2017, no factors were identified that would alter our October 1, 2016 goodwill impairment analysis. In making this assessment, we considered a number of factors including operating results, business plans, anticipated future cash flows, transactions and marketplace data. There are inherent uncertainties related to these factors and our judgment in applying them to the analysis of goodwill impairment. When changes occur in the composition of one or more reporting units, the goodwill is reassigned to the reporting units affected based on their relative fair values.

Our reporting units as of December 31, 2016 are described in detail in Note 2.h. to Notes to Consolidated Financial Statements included in our Annual Report. During the first three months of 2017, there were no changes to the composition of our reporting units. The goodwill associated with acquisitions completed during the first three months of 2017 (which are described in Note 4) has been incorporated into our existing reporting units.

9

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

The changes in the carrying value of goodwill attributable to each reportable operating segment for the three months ended March 31, 2017 are as follows:

	North American Records and Information Management Business		North American Data Management Business		Western European Business		Other International Business		Corporate and Other Business		Total Consolidated
Gross Balance as of December 31, 2016	$	2,485,806	$	559,443	$	405,571	$	743,126	$	25,922	$	4,219,868
Deductible goodwill acquired during the year	672		—		—		387		717		1,776
Non-deductible goodwill acquired during the year	—		—		—		4,311		—		4,311
Fair value and other adjustments(1)	5,548		525		2,818		2,802		—		11,693
Currency effects	1,569		448		4,649		27,801		—		34,467
Gross Balance as of March 31, 2017	$	2,493,595	$	560,416	$	413,038	$	778,427	$	26,639	$	4,272,115
Accumulated Amortization Balance as of December 31, 2016	$	204,895	$	53,753	$	56,150	$	49	$	—	$	314,847
Currency effects	58		15		125		12		—		210
Accumulated Amortization Balance as of March 31, 2017	$	204,953	$	53,768	$	56,275	$	61	$	—	$	315,057
Net Balance as of December 31, 2016	$	2,280,911	$	505,690	$	349,421	$	743,077	$	25,922	$	3,905,021
Net Balance as of March 31, 2017	$	2,288,642	$	506,648	$	356,763	$	778,366	$	26,639	$	3,957,058
Accumulated Goodwill Impairment Balance as of December 31, 2016	$	85,909	$	—	$	46,500	$	—	$	—	$	132,409
Accumulated Goodwill Impairment Balance as of March 31, 2017	$	85,909	$	—	$	46,500	$	—	$	—	$	132,409

_______________________________________________________________________________

(1) Total fair value and other adjustments include $11,693 in net adjustments primarily related to property, plant and equipment and customer relationship intangible assets (which represent adjustments within the applicable measurement period to provisional amounts recognized in purchase accounting).

10

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

Finite-lived intangible assets

Customer relationship intangible assets, which are acquired through either business combinations or acquisitions of customer relationships, are amortized over periods ranging from eight to 30 years and are included in depreciation and amortization in the accompanying Consolidated Statements of Operations. The value of customer relationship intangible assets is calculated based upon estimates of their fair value utilizing an income approach based on the present value of expected future cash flows.

Costs related to the acquisition of large volume accounts are capitalized. Free intake costs to transport boxes to one of our facilities, which include labor and transportation costs ("Move Costs"), are amortized over periods ranging from eight to 30 years and are included in depreciation and amortization in the accompanying Consolidated Statements of Operations. Payments that are made to a customer's current records management vendor in order to terminate the customer's existing contract with that vendor, or direct payments to a customer ("Permanent Withdrawal Fees"), are amortized over periods ranging from three to 15 years and are included in storage and service revenue in the accompanying Consolidated Statements of Operations. Move Costs and Permanent Withdrawal Fees are collectively referred to as "Customer Inducements". If the customer terminates its relationship with us, the unamortized carrying value of the Customer Inducement intangible asset is charged to expense or revenue. However, in the event of such termination, we generally collect, and record as income, permanent removal fees that generally equal or exceed the amount of the unamortized Customer Inducement intangible asset.

Other finite-lived intangible assets, including trade names, noncompetition agreements and trademarks, are capitalized and amortized over periods ranging from three to 10 years and are included in depreciation and amortization in the accompanying Consolidated Statements of Operations.

The components of our finite-lived intangible assets as of December 31, 2016 and March 31, 2017 are as follows:

	December 31, 2016							March 31, 2017
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer relationship intangible assets and Customer Inducements	$	1,604,020	$	(351,497	)	$	1,252,523	$	1,650,854	$	(373,925	)	$	1,276,929
Other finite-lived intangible assets (included in other assets, net)	24,788		(7,989		)	16,799		24,225		(10,478		)	13,747
Total	$	1,628,808	$	(359,486	)	$	1,269,322	$	1,675,079	$	(384,403	)	$	1,290,676

Amortization expense associated with finite-lived intangible assets and revenue reduction associated with the amortization of Permanent Withdrawal Fees for the three months ended March 31, 2016 and 2017 are as follows:

	Three Months Ended March 31,
	2016		2017
Amortization expense associated with finite-lived intangible assets	$	11,814	$	25,115
Revenue reduction associated with amortization of Permanent Withdrawal Fees	2,943		3,158

11

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

c.    Stock-Based Compensation

We record stock-based compensation expense, utilizing the straight-line method, for the cost of stock options, restricted stock units ("RSUs"), performance units ("PUs") and shares of stock issued under our employee stock purchase plan ("ESPP") (together, "Employee Stock-Based Awards").

Stock-based compensation expense for Employee Stock-Based Awards included in the accompanying Consolidated Statements of Operations for the three months ended March 31, 2016 and 2017 was $6,885 ($4,914 after tax or $0.02 per basic and diluted share) and $6,549 ($4,585 after tax or $0.02 per basic and diluted share), respectively.

Stock-based compensation expense for Employee Stock-Based Awards included in the accompanying Consolidated Statements of Operations is as follows:

	Three Months Ended March 31,
	2016		2017
Cost of sales (excluding depreciation and amortization)	$	27	$	28
Selling, general and administrative expenses	6,858		6,521
Total stock-based compensation	$	6,885	$	6,549

Stock Options

A summary of our stock options outstanding as of March 31, 2017 by vesting terms is as follows:

	March 31, 2017
	Stock Options Outstanding	% of Stock Options Outstanding
Three-year vesting period (10 year contractual life)	3,597,671	83.4	%
Five-year vesting period (10 year contractual life)	626,204	14.5	%
Ten-year vesting period (12 year contractual life)	90,754	2.1	%
	4,314,629	100.0	%

The weighted average fair value of stock options granted for the three months ended March 31, 2016 and 2017 was $2.49 and $4.26 per share, respectively. These values were estimated on the date of grant using the Black-Scholes option pricing model. The weighted average assumptions used for grants in the respective periods are as follows:

	Three Months Ended March 31,
Weighted Average Assumptions	2016		2017
Expected volatility	27.2	%	25.8	%
Risk-free interest rate	1.32	%	1.96	%
Expected dividend yield	7	%	6	%
Expected life	5.6 years		5.0 years

Expected volatility is calculated utilizing daily historical volatility over a period that equates to the expected life of the option. The risk-free interest rate was based on the United States Treasury interest rates whose term is consistent with the expected life (estimated period of time outstanding) of the stock options. Expected dividend yield is considered in the option pricing model and represents our current annualized expected per share dividends over the current trade price of our common stock. The expected life of the stock options granted is estimated using the historical exercise behavior of employees.

12

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

A summary of stock option activity for the three months ended March 31, 2017 is as follows:

	Stock Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Average Intrinsic Value
Outstanding at December 31, 2016	3,451,698		$	31.79
Granted	1,007,224		36.89
Exercised	(136,739	)	22.24
Forfeited	(5,773	)	28.21
Expired	(1,781	)	38.83
Outstanding at March 31, 2017	4,314,629		$	33.29	7.57	$	17,780
Options exercisable at March 31, 2017	2,126,229		$	30.09	5.84	$	15,685
Options expected to vest	2,022,212		$	36.41	9.24	$	1,955

The aggregate intrinsic value of stock options exercised for the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016		2017
Aggregate intrinsic value of stock options exercised	$	1,433	$	1,912

Restricted Stock Units

Under our various equity compensation plans, we may also grant RSUs. Our RSUs generally have a vesting period of between three and five years from the date of grant. However, RSUs granted to our non-employee directors vest immediately upon grant.

All RSUs accrue dividend equivalents associated with the underlying stock as we declare dividends. Dividends will generally be paid to holders of RSUs in cash upon the vesting date of the associated RSU and will be forfeited if the RSU does not vest. The fair value of RSUs is the excess of the market price of our common stock at the date of grant over the purchase price (which is typically zero).

Cash dividends accrued and paid on RSUs for the three months ended March 31, 2016 and 2017 are as follows:

	Three Months Ended March 31,
	2016		2017
Cash dividends accrued on RSUs	$	631	$	683
Cash dividends paid on RSUs	1,635		1,855

The fair value of RSUs vested during the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016		2017
Fair value of RSUs vested	$	14,978	$	14,026

13

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

A summary of RSU activity for the three months ended March 31, 2017 is as follows:

	RSUs		Weighted- Average Grant-Date Fair Value
Non-vested at December 31, 2016	1,163,393		$	33.21
Granted	525,328		36.90
Vested	(438,091	)	32.02
Forfeited	(11,597	)	34.65
Non-vested at March 31, 2017	1,239,033		$	35.18

Performance Units

Under our various equity compensation plans, we may also make awards of PUs. For the majority of outstanding PUs, the number of PUs earned is determined based on our performance against predefined targets of revenue and return on invested capital ("ROIC"). The number of PUs earned may range from 0% to 200% of the initial award. The number of PUs earned is determined based on our actual performance as compared to the targets at the end of a three-year performance period. Certain PUs that we grant will be earned based on a market condition associated with the total return on our common stock in relation to either (i) a subset of the Standard & Poor's 500 Index (for certain PUs granted prior to 2017), or (ii) a subset of the MSCI United States REIT Index (for certain PUs granted in 2017), rather than the revenue and ROIC targets noted above. The number of PUs earned based on the applicable market condition may range from 0% to 200% of the initial award.

All of our PUs will be settled in shares of our common stock and are subject to cliff vesting three years from the date of the original PU grant. PUs awarded to employees who terminate their employment during the three-year performance period and on or after attaining age 55 and completing 10 years of qualifying service are eligible for pro-rated vesting, subject to the actual achievement against the predefined targets or a market condition as discussed above, based on the number of full years of service completed following the grant date (but delivery of the shares remains deferred). As a result, PUs are generally expensed over the three-year performance period.

All PUs accrue dividend equivalents associated with the underlying stock as we declare dividends. Dividends will generally be paid to holders of PUs in cash upon the settlement date of the associated PU and will be forfeited if the PU does not vest.

Cash dividends accrued and paid on PUs for the three months ended March 31, 2016 and 2017 are as follows:

	Three Months Ended March 31,
	2016		2017
Cash dividends accrued on PUs	$	262	$	324
Cash dividends paid on PUs	645		205

14

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

During the three months ended March 31, 2017, we issued 229,692 PUs. The majority of our PUs are earned based on our performance against revenue and ROIC targets during their applicable performance period; therefore, we forecast the likelihood of achieving the predefined revenue and ROIC targets in order to calculate the expected PUs to be earned. We record a compensation charge based on either the forecasted PUs to be earned (during the performance period) or the actual PUs earned (at the three-year anniversary of the grant date) over the vesting period for each of the awards. The fair value of PUs based on our performance against revenue and ROIC targets is the excess of the market price of our common stock at the date of grant over the purchase price (which is typically zero). For PUs earned based on a market condition, we utilize a Monte Carlo simulation to fair value these awards at the date of grant, and such fair value is expensed over the three-year performance period. As of March 31, 2017, we expected 25%, 100% and 100% achievement of the predefined revenue and ROIC targets associated with the awards of PUs made in 2015, 2016 and 2017, respectively.

The fair value of earned PUs that vested during the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016		2017
Fair value of earned PUs that vested	$	4,081	$	905

A summary of PU activity for the three months ended March 31, 2017 is as follows:

	Original PU Awards		PU Adjustment(1)		Total PU Awards		Weighted- Average Grant-Date Fair Value
Non-vested at December 31, 2016	559,340		(121,038	)	438,302		$	33.67
Granted	229,692		—		229,692		41.93
Vested	(32,776	)	—		(32,776	)	27.60
Forfeited/Performance or Market Conditions Not Achieved	(3,480	)	(129,029	)	(132,509	)	28.57
Non-vested at March 31, 2017	752,776		(250,067	)	502,709		$	39.18

_______________________________________________________________________________

(1) Represents an increase or decrease in the number of original PUs awarded based on either the final performance criteria or market condition achievement at the end of the performance period of such PUs or a change in estimated awards based on the forecasted performance against the predefined targets.

Employee Stock Purchase Plan

We offer an ESPP in which participation is available to substantially all United States and Canadian employees who meet certain service eligibility requirements. The price for shares purchased under the ESPP is 95% of the market price of our common stock at the end of the offering period, without a look-back feature. As a result, we do not recognize compensation expense for the ESPP shares purchased. As of March 31, 2017, we had 727,594 shares available under the ESPP.

_______________________________________________________________________________

As of March 31, 2017, unrecognized compensation cost related to the unvested portion of our Employee Stock-Based Awards was $61,990 and is expected to be recognized over a weighted-average period of 2.4 years.

We generally issue shares of our common stock for the exercises of stock options, the vesting of RSUs and PUs and under our ESPP from unissued reserved shares.

15

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

d.    Income (Loss) Per Share—Basic and Diluted

Basic income (loss) per common share is calculated by dividing income (loss) by the weighted average number of common shares outstanding. The calculation of diluted income (loss) per share is consistent with that of basic income (loss) per share but gives effect to all potential common shares (that is, securities such as stock options, RSUs or PUs) that were outstanding during the period, unless the effect is antidilutive.

The calculation of basic and diluted income (loss) per share for the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016		2017
Income (loss) from continuing operations	$	63,041	$	58,844
Less: Net income (loss) attributable to noncontrolling interests	267		382
Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation)	$	62,774	$	58,462
(Loss) income from discontinued operations, net of tax	$	—	$	(337	)
Net income (loss) attributable to Iron Mountain Incorporated	$	62,774	$	58,125
Weighted-average shares—basic	211,526,000		263,855,000
Effect of dilutive potential stock options	482,388		461,761
Effect of dilutive potential RSUs and PUs	463,053		492,905
Weighted-average shares—diluted	212,471,441		264,809,666
Earnings (losses) per share—basic:
Income (loss) from continuing operations	$	0.30	$	0.22
(Loss) income from discontinued operations, net of tax	—		—
Net income (loss) attributable to Iron Mountain Incorporated(1)	$	0.30	$	0.22
Earnings (losses) per share—diluted:
Income (loss) from continuing operations	$	0.30	$	0.22
(Loss) income from discontinued operations, net of tax	—		—
Net income (loss) attributable to Iron Mountain Incorporated(1)	$	0.30	$	0.22
Antidilutive stock options, RSUs and PUs, excluded from the calculation	2,821,795		2,494,255

_______________________________________________________________________________

(1) Columns may not foot due to rounding.

16

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

e.    Income Taxes

We provide for income taxes during interim periods based on our estimate of the effective tax rate for the year. Discrete items and changes in our estimate of the annual effective tax rate are recorded in the period they occur. Our effective tax rate is subject to variability in the future due to, among other items: (1) changes in the mix of income between our qualified REIT subsidiaries ("QRSs") and our domestic taxable REIT subsidiaries ("TRSs"), as well as among the jurisdictions in which we operate; (2) tax law changes; (3) volatility in foreign exchange gains and losses; (4) the timing of the establishment and reversal of tax reserves; and (5) our ability to utilize net operating losses that we generate.

Our effective tax rate for the three months ended March 31, 2016 and 2017 was 15.9% and 13.5%, respectively. The primary reconciling items between the federal statutory tax rate of 35.0% and our overall effective tax rate in the three months ended March 31, 2016 were the benefit derived from the dividends paid deduction and differences in the rates of tax at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates. The primary reconciling items between the federal statutory tax rate of 35.0% and our overall effective tax rate in the three months ended March 31, 2017 were the benefit derived from the dividends paid deduction, a release of valuation allowances on certain of our foreign net operating losses of $7,511 as a result of the merger of certain of our foreign subsidiaries and differences in the rates of tax at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates. These benefits were partially offset by the impact of a legislative change enacted in the first quarter of 2017 in the United Kingdom which eliminated the deductibility of certain interest expense and increased our tax provision for the first quarter of 2017 by $1,764, or 2.5%.

During 2016, as a result of the closing of the Recall Transaction and the subsequent integration of Recall's operations into our operations, we reassessed our intentions regarding the indefinite reinvestment of current and future undistributed earnings of our foreign subsidiaries outside the United States (the "2016 Indefinite Reinvestment Assessment"). As a result of the 2016 Indefinite Reinvestment Assessment, we concluded that it is our intent to indefinitely reinvest our current and future undistributed earnings of our unconverted foreign TRSs outside the United States. Accordingly, we no longer provide incremental foreign withholding taxes on the retained book earnings of these unconverted foreign TRSs. As a REIT, future repatriation of incremental undistributed earnings of our foreign subsidiaries will not be subject to federal or state income tax, with the exception of foreign withholding taxes in limited instances; however, such future repatriations will require distribution in accordance with REIT distribution rules, and any such distribution may then be taxable, as appropriate, at the stockholder level. We continue, however, to provide for incremental foreign withholding taxes on net book over outside basis differences related to the earnings of our foreign QRSs and certain of our converted TRSs.

f.    Concentrations of Credit Risk

Financial instruments that potentially subject us to credit risk consist principally of cash and cash equivalents (including time deposits) and accounts receivable. The only significant concentrations of liquid investments as of December 31, 2016 and March 31, 2017, respectively, related to cash and cash equivalents. At December 31, 2016 and March 31, 2017, we had time deposits with six global banks and seven global banks, respectively. As of December 31, 2016 and March 31, 2017, our cash and cash equivalents was $236,484 and $295,628, respectively, including time deposits of $22,240 and $25,739, respectively.

g.    Fair Value Measurements

Our financial assets or liabilities that are carried at fair value are required to be measured using inputs from the three levels of the fair value hierarchy. A financial asset or liability's classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

The three levels of the fair value hierarchy are as follows:

Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that we have the ability to access at the measurement date.

17

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

Level 2—Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).

Level 3—Unobservable inputs that reflect our assumptions about the assumptions that market participants would use in pricing the asset or liability.

The assets and liabilities carried at fair value measured on a recurring basis as of December 31, 2016 and March 31, 2017, respectively, are as follows:

			Fair Value Measurements at December 31, 2016 Using
Description	Total Carrying Value at December 31, 2016		Quoted prices in active markets (Level 1)			Significant other observable inputs (Level 2)			Significant unobservable inputs (Level 3)
Time Deposits(1)	$	22,240	$	—		$	22,240		$	—
Trading Securities	10,659		10,181		(2)	478		(1)	—

			Fair Value Measurements at March 31, 2017 Using
Description	Total Carrying Value at March 31, 2017		Quoted prices in active markets (Level 1)			Significant other observable inputs (Level 2)			Significant unobservable inputs (Level 3)
Time Deposits(1)	$	25,739	$	—		$	25,739		$	—
Trading Securities	10,342		9,958		(2)	384		(1)	—
Derivative Assets(3)	114		—			114			—

_______________________________________________________________________________

(1) Time deposits and certain trading securities (included in Prepaid expenses and other in our Consolidated Balance Sheets) are measured based on quoted prices for similar assets and/or subsequent transactions.

(2) Certain trading securities are measured at fair value using quoted market prices.

(3) Derivative assets relate to short-term (six months or less) foreign currency contracts that we have entered into to hedge certain of our foreign exchange intercompany exposures, as more fully disclosed at Note 3. We calculate the value of such forward contracts by adjusting the spot rate utilized at the balance sheet date for translation purposes by an estimate of the forward points observed in active markets.

Disclosures are required in the financial statements for items measured at fair value on a non-recurring basis. We did not have any material items that are measured at fair value on a non-recurring basis at December 31, 2016 and March 31, 2017, with the exception of: (i) goodwill (as disclosed in Note 2.b.); (ii) the assets and liabilities acquired through acquisitions (as disclosed in Note 6 to Notes to Consolidated Financial Statements included in our Annual Report and Note 4); (iii) the Access Contingent Consideration (as defined and disclosed in Note 10); and (iv) the redemption value of certain redeemable noncontrolling interests (as disclosed in Note 2.x. in Notes to Consolidated Financial Statements included in our Annual Report), all of which are based on Level 3 inputs.

The fair value of our long-term debt, which was determined based on either Level 1 inputs or Level 3 inputs, is disclosed in Note 5. Long-term debt is measured at cost in our Consolidated Balance Sheets as of December 31, 2016 and March 31, 2017.

18

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

h.    Accumulated Other Comprehensive Items, Net

The changes in accumulated other comprehensive items, net for the three months ended March 31, 2016 and 2017, respectively, are as follows:

	Foreign Currency Translation Adjustments			Market Value Adjustments for Securities			Total
Balance as of December 31, 2015	$	(175,651	)	$	734		$	(174,917	)
Other comprehensive income (loss):
Foreign currency translation adjustments	23,491			—			23,491
Market value adjustments for securities	—			(734		)	(734		)
Total other comprehensive income (loss)	23,491			(734		)	22,757
Balance as of March 31, 2016	$	(152,160	)	$	—		$	(152,160	)

	Foreign Currency Translation Adjustments			Market Value Adjustments for Securities		Total
Balance as of December 31, 2016	$	(212,573	)	$	—	$	(212,573	)
Other comprehensive income (loss):
Foreign currency translation adjustments	51,334			—		51,334
Market value adjustments for securities	—			—		—
Total other comprehensive income (loss)	51,334			—		51,334
Balance as of March 31, 2017	$	(161,239	)	$	—	$	(161,239	)

i.    Other (Income) Expense, Net

Other (income) expense, net for the three months ended March 31, 2016 and 2017 consists of the following:

	Three Months Ended March 31,
	2016			2017
Foreign currency transaction (gains) losses, net	$	(12,542	)	$	(4,164	)
Other, net	605			(2,200		)
	$	(11,937	)	$	(6,364	)

j.    Property, Plant and Equipment and Long-Lived Assets

During the three months ended March 31, 2016 and 2017, we capitalized $3,403 and $5,283 of costs, respectively, associated with the development of internal use computer software projects.

Consolidated gain on disposal/write-down of property, plant and equipment (excluding real estate), net for the three months ended March 31, 2016 and 2017 was $451 and $459, respectively. These gains are primarily associated with the retirement of leased vehicles accounted for as capital lease assets within our North American Records and Information Management Business segment.

19

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

k.    New Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In January 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment ("ASU 2017-04"). ASU 2017-04 modifies the process by which entities will test goodwill for impairment. Under existing GAAP, when the carrying value of a reporting unit exceeds the reporting unit’s fair value, an entity would then proceed to a “Step 2” goodwill impairment analysis, which requires calculating the implied fair value of goodwill by assigning the fair value of a reporting unit to all of its assets and liabilities, as if that reporting unit had been acquired in a business combination. Under ASU 2017-04, a goodwill impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying value of the reporting unit’s goodwill. We adopted ASU 2017-04 in the first quarter of 2017 and it did not impact our consolidated financial statements.

As Yet Adopted Accounting Pronouncements

a. ASU 2014-09

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"). ASU 2014-09 provides guidance for management to reassess revenue recognition as it relates to: (1) transfer of control, (2) variable consideration, (3) allocation of transaction price based on relative standalone selling price, (4) licenses, (5) time value of money, and (6) contract costs.

ASU 2014-09 will replace the current revenue recognition criteria under GAAP, including industry-specific requirements, and provide companies with a single revenue recognition model for recognizing revenue from contracts with customers. The core principle of ASU 2014-09 is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for such goods or services. The two permitted transition methods under ASU 2014-09 are: (i) the full retrospective method, whereby ASU 2014-09 would be applied to each prior reporting period presented and the cumulative effect of adoption would be recognized at the earliest period shown, or (ii) the modified retrospective method, whereby the cumulative effect of applying ASU 2014-09 would be recognized at the date of initial application. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which deferred the effective date of ASU 2014-09 for one year, making ASU 2014-09 effective for us on January 1, 2018, with early adoption permitted as of January 1, 2017. We will adopt ASU 2014-09 as of January 1, 2018 using the modified retrospective method.

During 2015, we established a project team responsible for the assessment and implementation of ASU 2014-09. We utilized a bottoms-up approach to analyze the impact of ASU 2014-09 on our contracts with customers by reviewing our current accounting policies and practices to identify potential differences that would result from applying the requirements of ASU 2014-09 to our contracts with customers. We are currently in the process of designing and implementing appropriate changes to our business processes, systems and controls to support the accounting and the financial disclosure requirements under ASU 2014-09. We have been closely monitoring the FASB activity related to specific interpretative issues pertaining to ASU 2014-09. During the second half of 2016, we substantially completed our evaluation of the potential changes resulting from the adoption of ASU 2014-09 on our accounting and the financial disclosure requirements and are now moving into the more detailed quantification of the impacts of adopting ASU 2014-09, the more significant of which are discussed below. Based on our analysis to date, we expect that the most significant impacts associated with adopting ASU 2014-09 compared to current GAAP will relate to (i) the deferral of certain commissions on our long-term storage contracts (“Accounting for Commissions”) and (ii) certain policy changes related to initial moves of physical storage, which will be subject to new cost guidance (“Accounting for Initial Moves”).

20

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(2) Summary of Significant Accounting Policies (Continued)

i. Accounting for Commissions

Under current GAAP, commissions that we pay related to our long-term storage contracts are expensed as incurred. Under ASU 2014-09, however, certain commissions will be capitalized and amortized over the period of expected earned revenue. In the year of adoption, this will result in increased intangible contract assets on our Consolidated Balance Sheet, a reduction in selling, general and administrative expenses and a corresponding increase in amortization expense (assuming consistent levels of spending up through the adoption date) on our Consolidated Statement of Operations and an increase in cash flows from operating activities and a corresponding increase in cash used for investing activities on our Consolidated Statement of Cash Flows.

ii. Accounting for Initial Moves

Under current GAAP, intake costs not charged to transport boxes to one of our facilities, which include labor and transportation costs, are capitalized and amortized as a component of depreciation and amortization in our Consolidated Statements of Operations. Under ASU 2014-09, however, the revenue and costs associated with all initial moves of physical storage, regardless of whether or not the services associated with such initial moves are provided to the customer at no charge, will be deferred and recognized over the period consistent with the transfer of the service to the customer to which the asset relates. In the year of adoption, this will result in decreased intangible assets and increased deferred revenue on our Consolidated Balance Sheet, a reduction in cost of sales and a corresponding increase in amortization expense (assuming consistent levels of spending up through the adoption date) on our Consolidated Statement of Operations and an increase in cash flows from operating activities and a corresponding increase in cash used for investing activities on our Consolidated Statement of Cash Flows.

b. Other As Yet Adopted Accounting Pronouncements

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities ("ASU 2016-01"). ASU 2016-01 requires that most equity investments be measured at fair value, with subsequent changes in fair value recognized in net income. ASU 2016-01 also impacts financial liabilities under the fair value option and the presentation and disclosure requirements for financial instruments. ASU 2016-01 is effective for us on January 1, 2018. We do not believe that the adoption of ASU 2016-01 will have a material impact on our consolidated financial statements.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) ("ASU 2016-02"). ASU 2016-02 requires lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by all leases with terms of more than 12 months. ASU 2016-02 also will require certain qualitative and quantitative disclosures designed to give financial statement users information on the amount, timing, and uncertainty of cash flows arising from leases. ASU 2016-02 will be effective for us on January 1, 2019, with early adoption permitted. We will adopt ASU 2016-02 on January 1, 2019 and are currently evaluating the impact ASU 2016-02 will have on our consolidated financial statements.

In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash ("ASU 2016-18"). ASU 2016-18 provides guidance on the classification of restricted cash in the statement of cash flows. ASU 2016-18 is effective for us on January 1, 2018, with early adoption permitted and is required to be adopted on a retrospective basis. We do not believe that the adoption of ASU 2016-18 will have a material impact on our consolidated financial statements.

In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business ("ASU 2017-01"). ASU 2017-01 provides greater clarity on the definition of a business to assist entities in evaluating whether transactions should be accounted for as an acquisition or disposal of assets or businesses. ASU 2017-01 is effective for us on January 1, 2018, with early adoption permitted. We are currently evaluating the impact ASU 2017-01 will have on our consolidated financial statements.

21

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(3) Derivative Instruments and Hedging Activities

Historically, we have entered into forward contracts to hedge our exposures in certain foreign currencies. At the maturity of the forward contracts, we may enter into new forward contracts to hedge movements in the underlying currencies. At the time of settlement, we either pay or receive the net settlement amount from the forward contract and recognize this amount in other expense (income), net in the Consolidated Statements of Operations as a realized foreign exchange gain or loss. At the end of each month, we mark the outstanding forward contracts to market and record an unrealized foreign exchange gain or loss for the mark-to-market valuation. We have not designated any of the forward contracts we have entered into as hedges. Our policy is to record the fair value of each derivative instrument on a gross basis. As of December 31, 2016, we had no forward contracts outstanding. As of March 31, 2017, we had outstanding forward contracts to purchase 46,000 Canadian dollars and sell $34,439 to hedge our foreign exchange exposures associated with the Canadian dollar. As of March 31, 2017, we recorded a derivative asset of $114 which is a component of Prepaid expenses and other on our Consolidated Balance Sheet. During the three months ended March 31, 2016 and 2017, there were no cash receipts or payments included in cash from operating activities from continuing operations related to settlements associated with foreign currency forward contracts.

We have designated a portion of our Euro denominated borrowings by IMI under our Revolving Credit Facility (discussed more fully in Note 5) as a hedge of net investment of certain of our Euro denominated subsidiaries. For the three months ended March 31, 2016 and 2017, we designated, on average, 30,218 and 49,600 Euros, respectively, of our Euro denominated borrowings by IMI under our Revolving Credit Facility as a hedge of net investment of certain of our Euro denominated subsidiaries. As a result, we recorded the following foreign exchange (losses) gains, net of tax, related to the change in fair value of such debt due to currency translation adjustments, which is a component of accumulated other comprehensive items, net:

	Three Months Ended March 31,
	2016			2017
Foreign exchange (losses) gains	$	(1,342	)	$	(1,072	)
Less: Tax (benefit) expense on foreign exchange (losses) gains	—			—
Foreign exchange (losses) gains, net of tax	$	(1,342	)	$	(1,072	)

As of March 31, 2017, cumulative net gains of $17,131, net of tax, are recorded in accumulated other comprehensive items, net associated with this net investment hedge.

22

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(4) Acquisitions

We account for acquisitions using the acquisition method of accounting, and, accordingly, the assets and liabilities acquired are recorded at their estimated fair values and the results of operations for each acquisition have been included in our consolidated results from their respective acquisition dates. Cash consideration for our various acquisitions in 2017 was primarily provided through cash flows from operating activities and borrowings, as well as cash and cash equivalents on-hand.

a. Acquisition of Recall in 2016

On May 2, 2016 (Sydney, Australia time), we completed the Recall Transaction. At the closing of the Recall Transaction, we paid approximately $331,800 in cash and issued 50,233,412 shares of our common stock which, based on the closing price of our common stock as of April 29, 2016 (the last day of trading on the New York Stock Exchange prior to the closing of the Recall Transaction) of $36.53 per share, resulted in a total purchase price to Recall shareholders of approximately $2,166,900.

In connection with the acquisition of Recall, we sought regulatory approval of the Recall Transaction from the United States Department of Justice (the “DOJ”), the Australian Competition and Consumer Commission (the “ACCC”), the Canada Competition Bureau (the “CCB”) and the United Kingdom Competition and Markets Authority (the “CMA”).

As part of the regulatory approval process, we agreed to make certain divestments in order to address competition concerns raised by the DOJ, the ACCC, the CCB and the CMA in respect of the Recall Transaction (the “Divestments”). The Divestments, all of which were completed during the year ended December 31, 2016, are defined in Note 6 to Notes to Consolidated Financial Statements included in our Annual Report and are described in greater detail within that note, as well as within Note 10 in this Quarterly Report, were as follows:

i. United States

• The Initial United States Divestments

• The Seattle/Atlanta Divestments

ii. Australia

• The Australia Divestment Business

iii. Canada

• The Recall Canadian Divestments

• The Iron Mountain Canadian Divestments

iv. United Kingdom

• The UK Divestments

The unaudited consolidated pro forma financial information (the "Pro Forma Financial Information") below summarizes the combined results of us and Recall on a pro forma basis as if the Recall Transaction had occurred on January 1, 2015. The Pro Forma Financial Information is presented for informational purposes and is not necessarily indicative of the results of operations that would have been achieved if the acquisition had taken place on January 1, 2015. The Pro Forma Financial Information, for all periods presented, includes adjustments to convert Recall's historical results from International Financial Reporting Standards to GAAP, our current estimates of purchase accounting adjustments (including amortization expenses from acquired intangible assets, depreciation of acquired property, plant and equipment and amortization of favorable and unfavorable operating leases), stock-based compensation and related tax effects. Through March 31, 2017, we and Recall have collectively incurred $140,661 of operating expenditures to complete the Recall Transaction (including advisory and professional fees and costs to complete the Divestments and to provide transitional services required to support the divested businesses during a transition period). These operating expenditures have been reflected within the results of operations in the Pro Forma Financial Information as if they were incurred on January 1, 2015. The costs we have incurred to integrate Recall with our existing operations, including moving, severance, facility upgrade, REIT conversion and system upgrade costs are reflected in the Pro Forma Financial Information in the period in which they were incurred.

23

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(4) Acquisitions (Continued)

The Pro Forma Financial Information, for all periods presented, excludes from income (loss) from continuing operations the results of operations of the Initial United States Divestments, the Seattle/Atlanta Divestments, the Recall Canadian Divestments and the UK Divestments, as these businesses are presented as discontinued operations. See Note 10 for information regarding our conclusion with respect to the presentation of these divestments as discontinued operations. The results of the Australia Divestment Business and the Iron Mountain Canadian Divestments are included within the results from continuing operations in the Pro Forma Financial Information through the closing date of the Australia Sale (as defined in Note 10), in the case of the Australia Divestment Business, and through the closing date of the ARKIVE Sale (as defined in Note 10), in the case of the Iron Mountain Canadian Divestments, as these businesses do not qualify for discontinued operations. See Note 10 for information regarding our conclusion that these divestments do not meet the criteria to be reported as discontinued operations. The Australia Divestment Business and the Iron Mountain Canadian Divestments, collectively, represent $13,376 of total revenues and $806 of total income from continuing operations for the three months ended March 31, 2016.

	Three Months Ended March 31, 2016
Total Revenues	$	937,952
Income from Continuing Operations	$	58,058
Per Share Income from Continuing Operations - Basic	$	0.22
Per Share Income from Continuing Operations - Diluted	$	0.22

In addition to our acquisition of Recall, we completed certain other acquisitions during 2016 and 2017. The Pro Forma Financial Information does not reflect these acquisitions due to the insignificant impact of these acquisitions on our consolidated results of operations.

b. Other Noteworthy Acquisitions

In November 2016, we entered into a binding agreement to acquire the information management assets and operations of Santa Fe Group A/S ("Santa Fe") in ten regions within Europe and Asia in order to expand our presence in southeast Asia and western Europe. In December 2016, we acquired the information management assets and operations of Santa Fe in Hong Kong, Malaysia, Singapore, Spain and Taiwan (the “2016 Santa Fe Transaction”) for approximately 15,200 Euros (approximately $16,000, based upon the exchange rate between the United States dollar and the Euro as of December 30, 2016, the closing date of the 2016 Santa Fe Transaction). Of the total purchase price, 13,500 Euros (or approximately $14,200, based upon the exchange rate between the United States dollar and the Euro on the closing date of the 2016 Santa Fe Transaction) was paid during the year ended December 31, 2016, and the remaining balance is due on the 18-month anniversary of the closing of the 2016 Santa Fe Transaction. During the first quarter of 2017, we acquired the information management assets and operations of Santa Fe in Macau and South Korea (the "2017 Santa Fe Transaction") for approximately 925 Euros (or approximately $1,000, based upon the exchange rate between the United States dollar and the Euro on the closing date of the 2017 Santa Fe Transaction). We expect to acquire Santa Fe's information management assets and operations in India, Indonesia and the Philippines by the end of the second quarter of 2017.

In addition to the 2017 Santa Fe Transaction noted above, during 2017, in order to enhance our existing operations in the United States and Greece and to expand our operations into the United Arab Emirates, we completed the acquisition of three storage and records management companies and one art storage company for total consideration of approximately $13,700. The individual purchase prices of these acquisitions ranged from approximately $2,000 to approximately $4,400.

24

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(4) Acquisitions (Continued)

A summary of the cumulative consideration paid and the preliminary allocation of the purchase price paid for all of our 2017 acquisitions is as follows:

Cash Paid (gross of cash acquired)(1)	$	13,736
Fair Value of Noncontrolling Interests	843
Total Consideration	14,579
Fair Value of Identifiable Assets Acquired:
Cash	1,631
Accounts Receivable and Prepaid Expenses	1,771
Other Assets	692
Property, Plant and Equipment(2)	2,845
Customer Relationship Intangible Assets(3)	8,222
Accounts Payable, Accrued Expenses and Other Liabilities	(6,208		)
Deferred Income Taxes	(461		)
Total Fair Value of Identifiable Net Assets Acquired	8,492
Goodwill Initially Recorded(4)	$	6,087

_______________________________________________________________________________

(1) Included in cash paid for acquisitions in the Consolidated Statement of Cash Flows for the three months ended March 31, 2017 is net cash acquired of $1,631 and contingent and other payments, net of $82 related to acquisitions made in previous years.

(2) Consists primarily of racking structures and warehouse equipment. These assets are depreciated using the straight-line method with the useful lives as noted in Note 2.f. to Notes to Consolidated Financial Statements included in our Annual Report.

(3) The weighted average lives of customer relationship intangible assets associated with acquisitions in 2017 was 20 years.

(4) The goodwill associated with acquisitions is primarily attributable to the assembled workforce, expanded market opportunities and costs and other operating synergies anticipated upon the integration of the operations of us and the acquired businesses.

Allocations of the purchase price for acquisitions made in 2016 and 2017 were based on estimates of the fair value of the net assets acquired and are subject to adjustment upon the finalization of the purchase price allocations. The accounting for business combinations requires estimates and judgments as to expectations for future cash flows of the acquired business, and the allocations of those cash flows to identifiable tangible and intangible assets, in determining the assets acquired and liabilities assumed. The fair values assigned to tangible and intangible assets acquired and liabilities assumed, including contingent consideration, are based on management's best estimates and assumptions, as well as other information compiled by management, including valuations that utilize customary valuation procedures and techniques. The estimates and assumptions underlying the initial valuations are subject to the collection of information necessary to complete the valuations within the measurement periods, which are up to one year from the respective acquisition dates. The preliminary purchase price allocations that are not finalized as of March 31, 2017 primarily relate to the final assessment of the fair values of intangible assets (primarily customer relationship intangible assets), property, plant and equipment (primarily racking structures), operating leases, contingencies and income taxes (primarily deferred income taxes), primarily associated with the Recall Transaction and the Santa Fe Transaction, as well as other acquisitions which closed in 2017.

25

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(4) Acquisitions (Continued)

As the valuation of certain assets and liabilities for purposes of purchase price allocations are preliminary in nature, they are subject to adjustment as additional information is obtained about the facts and circumstances regarding these assets and liabilities that existed at the acquisition date. Any adjustments to our estimates of purchase price allocation will be made in the periods in which the adjustments are determined and the cumulative effect of such adjustments will be calculated as if the adjustments had been completed as of the acquisition dates. Adjustments recorded during the three months ended March 31, 2017 were not material to our results from operations.

26

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(5) Debt

Long-term debt is as follows:

	December 31, 2016											March 31, 2017
	Debt (inclusive of discount)			Unamortized Deferred Financing Costs			Carrying Amount			Fair Value		Debt (inclusive of discount)				Unamortized Deferred Financing Costs			Carrying Amount			Fair Value
Revolving Credit Facility	$	953,548		$	(7,530	)	$	946,018		$	953,548	$	988,327			$	(6,800	)	$	981,527		$	988,327
Term Loan	234,375			—			234,375			234,375		228,125				—			228,125			228,125
Australian Dollar Term Loan (the "AUD Term Loan")	177,198			(3,774		)	173,424			178,923		186,963				(3,832		)	183,131			188,715
6% Senior Notes due 2020 (the "6% Notes due 2020")(1)(2)	1,000,000			(12,730		)	987,270			1,052,500		1,000,000				(11,881		)	988,119			1,046,250
43/8% Senior Notes due 2021 (the "43/8% Notes")(1)(2)	500,000			(7,593		)	492,407			511,250		500,000				(7,163		)	492,837			512,500
61/8% CAD Senior Notes due 2021 (the "CAD Notes due 2021")(3)	148,792			(1,635		)	147,157			155,860		150,045				(1,561		)	148,484			155,859
61/8% GBP Senior Notes due 2022 (the "GBP Notes")(2)	493,648			(6,214		)	487,434			527,562		499,508				(6,012		)	493,496			529,478
6% Senior Notes due 2023 (the "6% Notes due 2023")(1)	600,000			(7,322		)	592,678			637,500		600,000				(7,048		)	592,952			632,280
53/8% CAD Senior Notes due 2023 (the "CAD Notes due 2023")(2)(3)	185,990			(3,498		)	182,492			188,780		187,557				(3,405		)	184,152			193,418
53/4% Senior Subordinated Notes due 2024 (the "53/4% Notes")(1)	1,000,000			(10,529		)	989,471			1,027,500		1,000,000				(10,186		)	989,814			1,017,500
53/8% Senior Notes due 2026 (the "53/8% Notes")(2)	250,000			(4,044		)	245,956			242,500		250,000				(3,937		)	246,063			248,750
Real Estate Mortgages, Capital Leases and Other	478,565			(1,277		)	477,288			478,565		518,191				(1,239		)	516,952			518,191
Accounts Receivable Securitization Program(4)	247,000			(384		)	246,616			247,000		250,000				(308		)	249,692			250,000
Mortgage Securitization Program	50,000			(1,405		)	48,595			50,000		50,000				(1,369		)	48,631			50,000
Total Long-term Debt	6,319,116			(67,935		)	6,251,181					6,408,716			—	(64,741		)	6,343,975
Less Current Portion	(172,975		)	—			(172,975		)			(421,535		)		308			(421,227		)
Long-term Debt, Net of Current Portion	$	6,146,141		$	(67,935	)	$	6,078,206				$	5,987,181			$	(64,433	)	$	5,922,748

______________________________________________________________

(1) Collectively, the "Parent Notes".

(2) Collectively, the "Unregistered Notes".

(3) Collectively, the "CAD Notes".

(4) Because the Accounts Receivable Securitization Program terminates on March 6, 2018, at which point all obligations under the program become due, this debt is classified within the current portion of long-term debt in our Consolidated Balance Sheet as of March 31, 2017.

27

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(5) Debt (Continued)

See Note 4 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding our long-term debt, including the direct obligors of each of our debt instruments as well as information regarding the fair value of our debt instruments (including the levels of the fair value hierarchy used to determine the fair value of our debt instruments). The levels of the fair value hierarchy used to determine the fair value of our debt as of March 31, 2017 are consistent with the levels of the fair value hierarchy used to determine the fair value of our debt as of December 31, 2016 (which are disclosed in our Annual Report). Additionally, see Note 6 for information regarding which of our consolidated subsidiaries guarantee certain of our debt instruments.

a. Credit Agreement

On July 2, 2015, we entered into a new credit agreement (the "Credit Agreement") to refinance our then existing credit agreement. The Credit Agreement terminates on July 6, 2019, at which point all obligations become due, but may be extended by one year at our option, subject to the conditions set forth in the Credit Agreement. Borrowings under the Credit Agreement may be prepaid without penalty or premium, in whole or in part, at any time. The Credit Agreement consists of a revolving credit facility (the "Revolving Credit Facility") and a term loan (the "Term Loan"). The maximum amount permitted to be borrowed under the Revolving Credit Facility is $1,750,000. The original amount of the Term Loan was $250,000. We have the option to request additional commitments of up to $250,000, in the form of term loans or through increased commitments under the Revolving Credit Facility, subject to the conditions specified in the Credit Agreement.

The Revolving Credit Facility is supported by a group of 25 banks and enables IMI and certain of its United States and foreign subsidiaries to borrow in United States dollars and (subject to sublimits) a variety of other currencies (including Canadian dollars, British pounds sterling, Euros and Australian dollars, among other currencies) in an aggregate outstanding amount not to exceed $1,750,000. The Term Loan is to be paid in quarterly installments in an amount equal to $3,125 per quarter, with the remaining balance due on July 3, 2019.

The interest rate on borrowings under the Credit Agreement varies depending on our choice of interest rate and currency options, plus an applicable margin, which varies based on our consolidated leverage ratio. Additionally, the Credit Agreement requires the payment of a commitment fee on the unused portion of the Revolving Credit Facility, which fee ranges from between 0.25% to 0.4% based on our consolidated leverage ratio and fees associated with outstanding letters of credit. As of March 31, 2017, we had $988,327 and $228,125 of outstanding borrowings under the Revolving Credit Facility and the Term Loan, respectively. Of the $988,327 of outstanding borrowings under the Revolving Credit Facility, $741,000 was denominated in United States dollars and 231,530 was denominated in Euros. In addition, we also had various outstanding letters of credit totaling $53,649. The remaining amount available for borrowing under the Revolving Credit Facility as of March 31, 2017, which is based on IMI's leverage ratio, the last 12 months' earnings before interest, taxes, depreciation and amortization and rent expense ("EBITDAR"), other adjustments as defined in the Credit Agreement and current external debt, was $708,024 (which amount represents the maximum availability as of such date). The average interest rate in effect under the Credit Agreement was 3.0% as of March 31, 2017. The average interest rate in effect under the Revolving Credit Facility was 3.0% and ranged from 2.3% to 5.0% as of March 31, 2017 and the interest rate in effect under the Term Loan as of March 31, 2017 was 3.2%.

The capital stock or other equity interests of most of our United States subsidiaries, and up to 66% of the capital stock or other equity interests of most of our first-tier foreign subsidiaries, are pledged to secure borrowings under the Credit Agreement, together with all intercompany obligations (including promissory notes) of subsidiaries owed to us or to one of our United States subsidiary guarantors. In addition, Iron Mountain Canada Operations ULC ("Canada Company") has pledged 66% of the capital stock of its subsidiaries, and all intercompany obligations (including promissory notes) owed to or held by it, to secure the Canadian dollar subfacility under the Revolving Credit Facility.

The Credit Agreement, our indentures and other agreements governing our indebtedness contain certain restrictive financial and operating covenants, including covenants that restrict our ability to complete acquisitions, pay cash dividends, incur indebtedness, make investments, sell assets and take certain other corporate actions. The covenants do not contain a rating trigger. Therefore, a change in our debt rating would not trigger a default under the Credit Agreement, our indentures or other agreements governing our indebtedness. The Credit Agreement uses EBITDAR-based calculations as the primary measures of financial performance, including leverage and fixed charge coverage ratios.

28

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(5) Debt (Continued)

Our leverage and fixed charge coverage ratios under the Credit Agreement as of December 31, 2016 and March 31 2017, respectively, and our leverage ratio under our indentures as of December 31, 2016 and March 31, 2017, respectively, are as follows:

	December 31, 2016	March 31, 2017	Maximum/Minimum Allowable
Net total lease adjusted leverage ratio	5.7	5.8	Maximum allowable of 6.5
Net secured debt lease adjusted leverage ratio	2.7	2.7	Maximum allowable of 4.0
Bond leverage ratio (not lease adjusted)	5.2	5.5	Maximum allowable of 6.5
Fixed charge coverage ratio	2.4	2.3	Minimum allowable of 1.5

As noted in the table above, our maximum allowable net total lease adjusted leverage ratio under the Credit Agreement is 6.5. The Credit Agreement also contains a provision which limits, in certain circumstances, our dividends in any four consecutive fiscal quarters to 95% of Funds From Operations (as defined in the Credit Agreement) for such four fiscal quarters or, if greater, the amount that we would be required to pay in order to continue to be qualified for taxation as a REIT or to avoid the imposition of income or excise taxes on IMI. This limitation only applies when our net total lease adjusted leverage ratio exceeds 6.0 as measured as of the end of the most recently completed fiscal quarter.

Noncompliance with these leverage and fixed charge coverage ratios would have a material adverse effect on our financial condition and liquidity.

b. Australian Dollar Term Loan

On September 28, 2016, Iron Mountain Australia Group Pty, Ltd., a wholly owned subsidiary of IMI, entered into a 250,000 Australian dollar Syndicated Term Loan B Facility (the "AUD Term Loan"), which matures in September 2022. The AUD Term Loan was issued at 99% of par. The net proceeds of approximately 243,750 Australian dollars (or approximately $185,800, based upon the exchange rate between the Australian dollar and the United States dollar on September 28, 2016 (the settlement date for the AUD Term Loan)), after paying commissions to the joint lead arrangers and net of the original discount, were used to repay outstanding borrowings under the Revolving Credit Facility and for general corporate purposes.

Principal payments on the AUD Term Loan are to be paid in quarterly installments in an amount equivalent to an aggregate of 6,250 Australian dollars per year, with the remaining balance due on September 28, 2022. The AUD Term Loan is secured by substantially all assets of Iron Mountain Australia Group Pty. Ltd. IMI and the Guarantors guarantee all obligations under the AUD Term Loan. The interest rate on the AUD Term Loan is based upon BBSY (an Australian benchmark variable interest rate) plus 4.3%. As of March 31, 2017, we had 246,875 Australian dollars ($188,715 based upon the exchange rate between the United States dollar and the Australian dollar as of March 31, 2017) outstanding on the AUD Term Loan and the interest rate in effect under the AUD Term Loan was 6.1%. The amount of debt for the AUD Term Loan reflects an unamortized original issue discount of $1,725 and $1,752 as of December 31, 2016 and March 31, 2017, respectively.

29

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(5) Debt (Continued)

c. Accounts Receivable Securitization Program

In March 2015, we entered into a $250,000 accounts receivable securitization program (the "Accounts Receivable Securitization Program") involving several of our wholly owned subsidiaries and certain financial institutions. Under the Accounts Receivable Securitization Program, certain of our subsidiaries sell substantially all of their United States accounts receivable balances to our wholly owned special purpose entities, Iron Mountain Receivables QRS, LLC and Iron Mountain Receivables TRS, LLC (the "Accounts Receivable Securitization Special Purpose Subsidiaries"). The Accounts Receivable Securitization Special Purpose Subsidiaries use the accounts receivable balances to collateralize loans obtained from certain financial institutions. The Accounts Receivable Securitization Special Purpose Subsidiaries are consolidated subsidiaries of IMI. The Accounts Receivable Securitization Program is accounted for as a collateralized financing activity, rather than a sale of assets, and therefore: (i) accounts receivable balances pledged as collateral are presented as assets and borrowings are presented as liabilities on our Consolidated Balance Sheets, (ii) our Consolidated Statements of Operations reflect the associated charges for bad debt expense related to pledged accounts receivable (a component of selling, general and administrative expenses) and reductions to revenue due to billing and service related credit memos issued to customers and related reserves, as well as interest expense associated with the collateralized borrowings and (iii) receipts from customers related to the underlying accounts receivable are reflected as operating cash flows and borrowings and repayments under the collateralized loans are reflected as financing cash flows within our Consolidated Statements of Cash Flows. Iron Mountain Information Management, LLC ("IMIM") retains the responsibility of servicing the accounts receivable balances pledged as collateral in this transaction and IMI provides a performance guaranty. The Accounts Receivable Securitization Program terminates on March 6, 2018, at which point all obligations become due. The maximum availability allowed is limited by eligible accounts receivable, as defined under the terms of the Accounts Receivable Securitization Program. As of March 31, 2017, the maximum availability allowed and amount outstanding under the Accounts Receivable Securitization Program was $250,000. The interest rate in effect under the Accounts Receivable Securitization Program was 1.9% as of March 31, 2017.

d. Mortgage Securitization Program

In October 2016, we entered into a $50,000 mortgage securitization program (the "Mortgage Securitization Program") involving certain of our wholly owned subsidiaries with Goldman Sachs Mortgage Company (“Goldman Sachs”). Under the Mortgage Securitization Program, IMIM contributed certain real estate assets to its wholly owned special purpose entity, Iron Mountain Mortgage Finance I, LLC (the "Mortgage Securitization Special Purpose Subsidiary"). The Mortgage Securitization Special Purpose Subsidiary then used the real estate to secure a collateralized loan obtained from Goldman Sachs. The Mortgage Securitization Special Purpose Subsidiary is a consolidated subsidiary of IMI. The Mortgage Securitization Program is accounted for as a collateralized financing activity, rather than a sale of assets and therefore: (i) real estate assets pledged as collateral remain as assets and borrowings are presented as liabilities on our Consolidated Balance Sheets, (ii) our Consolidated Statement of Operations reflects the associated charges for depreciation expense related to the pledged real estate and interest expense associated with the collateralized borrowings and (iii) borrowings and repayments under the collateralized loans are reflected as financing cash flows within our Consolidated Statement of Cash Flows. The Mortgage Securitization Program is scheduled to terminate on November 6, 2026, at which point all obligations become due. As of March 31, 2017, the outstanding amount under the Mortgage Securitization Program was $50,000. The interest rate in effect under the Mortgage Securitization Program was 3.5% as of March 31, 2017.

30

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(5) Debt (Continued)

e. Cash Pooling

Certain of our subsidiaries participate in cash pooling arrangements (the “Cash Pools”) with Bank Mendes Gans (“BMG”), an independently operated fully-owned subsidiary of ING Group, in order to help manage global liquidity requirements. Under the Cash Pools, cash deposited by participating subsidiaries with BMG is pledged as security against the drawings of other participating subsidiaries, and legal rights of offset are provided and, therefore, amounts are presented in our Consolidated Balance Sheets on a net basis. Each subsidiary receives interest on the cash balances held on deposit or pays interest on the amounts owed based on an applicable rate as defined in the Cash Pools. At December 31, 2016, we had a net cash position of approximately $1,700 (which consisted of a gross cash position of approximately $69,500 less outstanding borrowings of approximately $67,800 by participating subsidiaries).

During the first quarter of 2017, we significantly expanded our utilization of the Cash Pools and reduced our utilization of our financing centers in Europe for purposes of meeting our global liquidity requirements. As of March 31, 2017, we utilize two separate cash pools with BMG, one of which we utilize to manage global liquidity requirements for our QRSs (the "QRS Cash Pool") and one pool for our TRSs (the "TRS Cash Pool"). As of March 31, 2017, we had a net cash position of approximately $5,400 in the QRS Cash Pool (which consisted of a gross cash position of approximately $478,200 less outstanding borrowings of approximately $472,800 by participating subsidiaries) and we had a net cash position of approximately $11,100 in the TRS Cash Pool (which consisted of a gross cash position of approximately $217,300 less outstanding borrowings of approximately $206,200 by participating subsidiaries). The net cash position balances as of December 31, 2016 and March 31, 2017, respectively, are reflected as cash and cash equivalents in the Consolidated Balance Sheets.

31

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(6) Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors

The following data summarizes the consolidating results of IMI on the equity method of accounting as of December 31, 2016 and March 31, 2017 and for the three months ended March 31, 2016 and 2017 and are prepared on the same basis as the consolidated financial statements.

The Parent Notes, CAD Notes, GBP Notes and the 5³/₈% Notes are guaranteed by the direct and indirect 100% owned United States subsidiaries of IMI, that represent the substantial majority of our United States operations (the "Guarantors"). The guarantees are full and unconditional, as well as joint and several.

Additionally, IMI guarantees the CAD Notes, which were issued by Canada Company, the GBP Notes, which were issued by Iron Mountain Europe PLC ("IME"), and the 5³/₈% Notes, which were issued by Iron Mountain US Holdings, Inc. which is one of the Guarantors. Canada Company and IME do not guarantee the Parent Notes. The subsidiaries that do not guarantee the Parent Notes, the CAD Notes, the GBP Notes and the 5³/₈% Notes, including IME, the Accounts Receivable Securitization Special Purpose Subsidiaries and the Mortgage Securitization Special Purpose Subsidiary, but excluding Canada Company, are referred to below as the "Non-Guarantors".

In the normal course of business, we periodically change the ownership structure of our subsidiaries to meet the requirements of our business. In the event of such changes, we recast the prior period financial information within this footnote to conform to the current period presentation in the period such changes occur. Generally, these changes do not alter the designation of the underlying subsidiaries as Guarantors or Non-Guarantors. However, they may change whether the underlying subsidiary is owned by the Parent, a Guarantor, Canada Company or a Non-Guarantor. If such a change occurs, the amount of investment in subsidiaries in the below Consolidated Balance Sheets and equity in the earnings (losses) of subsidiaries, net of tax in the below Consolidated Statements of Operations and Comprehensive Income (Loss) with respect to the relevant Parent, Guarantors, Canada Company, Non-Guarantors and Eliminations columns also would change.

In July 2016, certain Non-Guarantor subsidiaries which were originally established at the time of our acquisition of Crozier Fine Arts in December 2015 (the “Crozier Entities”), were merged into IMIM, a Guarantor and a substantive operating entity (the “Crozier Merger”). As a result of the Crozier Merger, we have recast the accompanying Consolidated Statement of Operations and Comprehensive Income (Loss) for the three months ended March 31, 2016 and the Consolidated Statement of Cash Flows for the three months ended March 31, 2016 to conform to the current period presentation of the Crozier Entities.

32

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(6) Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors (Continued)

CONSOLIDATED BALANCE SHEETS

	December 31, 2016
	Parent		Guarantors		Canada Company		Non- Guarantors		Eliminations			Consolidated
Assets
Current Assets:
Cash and Cash Equivalents:	$	2,405	$	23,380	$	17,110	$	193,589	$	—		$	236,484
Accounts receivable	—		53,364		37,781		600,104		—			691,249
Intercompany receivable	—		653,008		21,114		—		(674,122		)	—
Prepaid expenses and other	—		70,660		4,967		108,776		(29		)	184,374
Total Current Assets	2,405		800,412		80,972		902,469		(674,151		)	1,112,107
Property, Plant and Equipment, Net	483		1,804,991		159,391		1,118,461		—			3,083,326
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	4,014,330		1,000		—		—		(4,015,330		)	—
Investment in subsidiaries	1,659,518		699,411		35,504		77,449		(2,471,882		)	—
Goodwill	—		2,602,784		217,422		1,084,815		—			3,905,021
Other	—		765,698		49,570		571,078		—			1,386,346
Total Other Assets, Net	5,673,848		4,068,893		302,496		1,733,342		(6,487,212		)	5,291,367
Total Assets	$	5,676,736	$	6,674,296	$	542,859	$	3,754,272	$	(7,161,363	)	$	9,486,800
Liabilities and Equity
Intercompany Payable	$	558,492	$	—	$	—	$	115,630	$	(674,122	)	$	—
Current Portion of Long-Term Debt	—		51,456		—		121,548		(29		)	172,975
Total Other Current Liabilities	58,478		488,194		40,442		286,468		—			873,582
Long-Term Debt, Net of Current Portion	3,093,388		1,055,642		335,410		1,593,766		—			6,078,206
Long-Term Notes Payable to Affiliates and Intercompany Payable	1,000		4,014,330		—		—		(4,015,330		)	—
Other Long-term Liabilities	—		127,715		54,054		188,900		—			370,669
Commitments and Contingencies (See Note 8)
Redeemable Noncontrolling Interests	28,831		—		—		25,866		—			54,697
Total Iron Mountain Incorporated Stockholders' Equity	1,936,547		936,959		112,953		1,421,970		(2,471,882		)	1,936,547
Noncontrolling Interests	—		—		—		124		—			124
Total Equity	1,936,547		936,959		112,953		1,422,094		(2,471,882		)	1,936,671
Total Liabilities and Equity	$	5,676,736	$	6,674,296	$	542,859	$	3,754,272	$	(7,161,363	)	$	9,486,800

33

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(6) Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors (Continued)

CONSOLIDATED BALANCE SHEETS (Continued)

	March 31, 2017
	Parent		Guarantors		Canada Company		Non- Guarantors		Eliminations			Consolidated
Assets
Current Assets:
Cash and cash equivalents(1)	$	470	$	64,550	$	5,763	$	410,667	$	(185,822	)	$	295,628
Accounts receivable	—		36,545		36,215		648,270		—			721,030
Intercompany receivable	—		904,316		33,923		—		(938,239		)	—
Prepaid expenses and other	114		79,337		6,325		96,232		(29		)	181,979
Total Current Assets	584		1,084,748		82,226		1,155,169		(1,124,090		)	1,198,637
Property, Plant and Equipment, Net	438		1,810,787		157,814		1,142,701		—			3,111,740
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	4,214,179		1,000		—		—		(4,215,179		)	—
Investment in subsidiaries	1,750,210		785,770		35,948		85,456		(2,657,384		)	—
Goodwill	—		2,584,712		217,837		1,154,509		—			3,957,058
Other	—		762,098		49,211		593,390		—			1,404,699
Total Other Assets, Net	5,964,389		4,133,580		302,996		1,833,355		(6,872,563		)	5,361,757
Total Assets	$	5,965,411	$	7,029,115	$	543,036	$	4,131,225	$	(7,996,653	)	$	9,672,134
Liabilities and Equity
Intercompany Payable	$	698,066	$	—	$	—	$	240,173	$	(938,239	)	$	—
Borrowings under cash pools	—		138,693		—		47,129		(185,822		)	—
Current Portion of Long-Term Debt	—		45,837		—		375,419		(29		)	421,227
Total Other Current Liabilities	199,038		454,823		41,747		301,634		—			997,242
Long-Term Debt, Net of Current Portion	3,159,864		1,014,038		338,456		1,410,390		—			5,922,748
Long-Term Notes Payable to Affiliates and Intercompany Payable	1,000		4,214,179		—		—		(4,215,179		)	—
Other Long-term Liabilities	—		138,228		41,429		180,178		—			359,835
Commitments and Contingencies (See Note 8)
Redeemable Noncontrolling Interests	4,718		—		—		62,590		—			67,308
Total Iron Mountain Incorporated Stockholders' Equity	1,902,725		1,023,317		121,404		1,512,663		(2,657,384		)	1,902,725
Noncontrolling Interests	—		—		—		1,049		—			1,049
Total Equity	1,902,725		1,023,317		121,404		1,513,712		(2,657,384		)	1,903,774
Total Liabilities and Equity	$	5,965,411	$	7,029,115	$	543,036	$	4,131,225	$	(7,996,653	)	$	9,672,134

______________________________________________________________

(1) Included within Cash and Cash Equivalents at March 31, 2017 is approximately $58,200 and $144,100 of cash on deposit associated with our Cash Pools for the Guarantor and Non-Guarantors, respectively. See Note 5 for more information on our Cash Pools.

34

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(6) Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors (Continued)

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)

	Three Months Ended March 31, 2016
	Parent			Guarantors			Canada Company			Non- Guarantors			Eliminations			Consolidated
Revenues:
Storage rental	$	—		$	313,619		$	27,605		$	119,987		$	—		$	461,211
Service	—			188,908			14,642			85,929			—			289,479
Intercompany revenues	—			1,013			—			17,345			(18,358		)	—
Total Revenues	—			503,540			42,247			223,261			(18,358		)	750,690
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	—			208,154			6,790			111,161			—			326,105
Selling, general and administrative	72			150,019			3,373			54,302			—			207,766
Intercompany cost of sales	—			3,354			13,991			1,013			(18,358		)	—
Depreciation and amortization	45			56,926			3,079			27,154			—			87,204
(Gain) Loss on disposal/write-down of property, plant and equipment (excluding real estate), net	—			(570		)	6			113			—			(451		)
Total Operating Expenses	117			417,883			27,239			193,743			(18,358		)	620,624
Operating (Loss) Income	(117		)	85,657			15,008			29,518			—			130,066
Interest Expense (Income), Net	39,984			(8,509		)	10,034			25,553			—			67,062
Other Expense (Income), Net	886			3,456			(20		)	(16,259		)	—			(11,937		)
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(40,987		)	90,710			4,994			20,224			—			74,941
Provision (Benefit) for Income Taxes	—			9,070			1,866			964			—			11,900
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(103,761		)	(22,374		)	(1,371		)	(3,128		)	130,634			—
Net Income (Loss)	62,774			104,014			4,499			22,388			(130,634		)	63,041
Less: Net Income (Loss) Attributable to Noncontrolling Interests	—			—			—			267			—			267
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	62,774		$	104,014		$	4,499		$	22,121		$	(130,634	)	$	62,774
Net Income (Loss)	$	62,774		$	104,014		$	4,499		$	22,388		$	(130,634	)	$	63,041
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	(1,342		)	—			1,789			23,531			—			23,978
Market Value Adjustments for Securities	—			(734		)	—			—			—			(734		)
Equity in Other Comprehensive Income (Loss) of Subsidiaries	24,099			24,099			661			1,789			(50,648		)	—
Total Other Comprehensive Income (Loss)	22,757			23,365			2,450			25,320			(50,648		)	23,244
Comprehensive Income (Loss)	85,531			127,379			6,949			47,708			(181,282		)	86,285
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	—			—			—			754			—			754
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	85,531		$	127,379		$	6,949		$	46,954		$	(181,282	)	$	85,531

35

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(6) Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors (Continued)

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued)

	Three Months Ended March 31, 2017
	Parent			Guarantors			Canada Company			Non- Guarantors			Eliminations			Consolidated
Revenues:
Storage rental	$	—		$	349,351		$	32,006		$	190,922		$	—		$	572,279
Service	—			218,209			16,050			132,338			—			366,597
Intercompany revenues	—			1,097			—			22,342			(23,439		)	—
Total Revenues	—			568,657			48,056			345,602			(23,439		)	938,876
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	—			239,329			7,550			179,828			—			426,707
Selling, general and administrative	79			162,705			3,561			73,821			—			240,166
Intercompany cost of sales	—			6,606			15,736			1,097			(23,439		)	—
Depreciation and amortization	46			76,161			4,238			44,262			—			124,707
(Gain) Loss on disposal/write-down of property, plant and equipment (excluding real estate), net	—			(548		)	2			87			—			(459		)
Total Operating Expenses	125			484,253			31,087			299,095			(23,439		)	791,121
Operating (Loss) Income	(125		)	84,404			16,969			46,507			—			147,755
Interest Expense (Income), Net	42,784			(3,279		)	11,670			34,880			—			86,055
Other Expense (Income), Net	81			2,519			(27		)	(8,937		)	—			(6,364		)
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(42,990		)	85,164			5,326			20,564			—			68,064
Provision (Benefit) for Income Taxes	—			12,744			(3,488		)	(36		)	—			9,220
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(101,115		)	(23,413		)	(157		)	(8,814		)	133,499			—
Income (Loss) from Continuing Operations	58,125			95,833			8,971			29,414			(133,499		)	58,844
Income (Loss) from Discontinued Operations, Net of Tax	—			198			—			(535		)	—			(337		)
Net Income (Loss)	58,125			96,031			8,971			28,879			(133,499		)	58,507
Less: Net Income (Loss) Attributable to Noncontrolling Interests	—			—			—			382			—			382
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	58,125		$	96,031		$	8,971		$	28,497		$	(133,499	)	$	58,125
Net Income (Loss)	$	58,125		$	96,031		$	8,971		$	28,879		$	(133,499	)	$	58,507
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	(1,072		)	—			635			51,221			—			50,784
Equity in Other Comprehensive Income (Loss) of Subsidiaries	52,406			28,540			287			635			(81,868		)	—
Total Other Comprehensive Income (Loss)	51,334			28,540			922			51,856			(81,868		)	50,784
Comprehensive Income (Loss)	109,459			124,571			9,893			80,735			(215,367		)	109,291
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	—			—			—			(168		)	—			(168		)
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	109,459		$	124,571		$	9,893		$	80,903		$	(215,367	)	$	109,459

36

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(6) Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors (Continued)

CONSOLIDATED STATEMENTS OF CASH FLOWS

	Three Months Ended March 31, 2016
	Parent			Guarantors			Canada Company			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Cash Flows from Operating Activities	$	(48,737	)	$	121,636		$	6,477		$	1,742		$	—		$	81,118
Cash Flows from Investing Activities:
Capital expenditures	—			(61,886		)	(1,007		)	(17,959		)	—			(80,852		)
Cash paid for acquisitions, net of cash acquired	—			—			130			(19,470		)	—			(19,340		)
Intercompany loans to subsidiaries	166,442			31,987			—			—			(198,429		)	—
Investment in subsidiaries	(1,585		)	(1,585		)	—			—			3,170			—
Acquisitions of customer relationships and customer inducements	—			(4,733		)	—			(2,525		)	—			(7,258		)
Proceeds from sales of property and equipment and other, net (including real estate)	—			50			—			119			—			169
Cash Flows from Investing Activities	164,857			(36,167		)	(877		)	(39,835		)	(195,259		)	(107,281		)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(8,463		)	(1,422,545		)	(383,896		)	(569,311		)	—			(2,384,215		)
Proceeds from revolving credit and term loan facilities and other debt	—			1,500,499			370,816			638,530			—			2,509,845
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	—			—			—			885			—			885
Intercompany loans from parent	—			(167,514		)	(1,111		)	(29,804		)	198,429			—
Equity contribution from parent	—			1,585			—			1,585			(3,170		)	—
Parent cash dividends	(104,931		)	—			—			—			—			(104,931		)
Net (payments) proceeds associated with employee stock-based awards	(1,975		)	—			—			—			—			(1,975		)
Excess tax (deficiency) benefit from stock-based compensation	(348		)	—			—			—			—			(348		)
Cash Flows from Financing Activities	(115,717		)	(87,975		)	(14,191		)	41,885			195,259			19,261
Effect of exchange rates on cash and cash equivalents	—			—			(608		)	(2,926		)	—			(3,534		)
Increase (Decrease) in cash and cash equivalents	403			(2,506		)	(9,199		)	866			—			(10,436		)
Cash and cash equivalents, beginning of period	151			7,803			13,182			107,245			—			128,381
Cash and cash equivalents, end of period	$	554		$	5,297		$	3,983		$	108,111		$	—		$	117,945

37

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(6) Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors (Continued)

CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)

	Three Months Ended March 31, 2017
	Parent			Guarantors			Canada Company			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	$	(41,288	)	$	136,411		$	5,291		$	21,760		$	—		$	122,174
Cash Flows from Operating Activities—Discontinued Operations	—			198			(535		)	—			—			(337		)
Cash Flows from Operating Activities	(41,288		)	136,609			4,756			21,760			—			121,837
Cash Flows from Investing Activities:
Capital expenditures	—			(53,175		)	(2,555		)	(17,472		)	—			(73,202		)
Cash paid for acquisitions, net of cash acquired	—			(6,380		)	—			(5,807		)	—			(12,187		)
Intercompany loans to subsidiaries	(1,187		)	(72,807		)	—			(478		)	74,472			—
Investment in subsidiaries	(16,170		)	—			—			—			16,170			—
Acquisitions of customer relationships and customer inducements	—			(20,653		)	(271		)	(479		)	—			(21,403		)
Net proceeds from Iron Mountain Divestments (see Note 10)	—			—			—			2,423			—			2,423
Proceeds from sales of property and equipment and other, net (including real estate)	—			93			2			(29		)	—			66
Cash Flows from Investing Activities—Continuing Operations	(17,357		)	(152,922		)	(2,824		)	(21,842		)	90,642			(104,303		)
Cash Flows from Investing Activities—Discontinued Operations	—			—			—			—			—			—
Cash Flows from Investing Activities	(17,357		)	(152,922		)	(2,824		)	(21,842		)	90,642			(104,303		)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(31,733		)	(1,495,558		)	(71		)	(1,154,986		)	—			(2,682,348		)
Proceeds from revolving credit and term loan facilities and other debt	94,811			1,423,653			—			1,196,319			—			2,714,783
Borrowings (payments) under cash pools	—			138,693			—			47,129			(185,822		)	—
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	—			—			—			10,668			—			10,668
Intercompany loans from parent	—			(9,305		)	(12,680		)	96,457			(74,472		)	—
Equity contribution from parent	—			—			—			16,170			(16,170		)	—
Parent cash dividends	(2,060		)	—			—			—			—			(2,060		)
Net payments associated with employee stock-based awards	(4,308		)	—			—			—			—			(4,308		)
Payment of debt financing and stock issuance costs	—			—			(73		)	—			—			(73		)
Cash Flows from Financing Activities—Continuing Operations	56,710			57,483			(12,824		)	211,757			(276,464		)	36,662
Cash Flows from Financing Activities—Discontinued Operations	—			—			—			—			—			—
Cash Flows from Financing Activities	56,710			57,483			(12,824		)	211,757			(276,464		)	36,662
Effect of exchange rates on cash and cash equivalents	—			—			(455		)	5,403			—			4,948
(Decrease) Increase in cash and cash equivalents	(1,935		)	41,170			(11,347		)	217,078			(185,822		)	59,144
Cash and cash equivalents, beginning of period	2,405			23,380			17,110			193,589			—			236,484
Cash and cash equivalents, end of period	$	470		$	64,550		$	5,763		$	410,667		$	(185,822	)	$	295,628

38

IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(7) Segment Information

Our five reportable operating segments as of December 31, 2016 are described in Note 9 to Notes to Consolidated Financial Statements included in our Annual Report and are as follows:

• North American Records and Information Management Business

• North American Data Management Business

• Western European Business

• Other International Business

• Corporate and Other Business

There have been no changes made to our reportable operating segments since December 31, 2016. The operations associated with acquisitions completed during the first three months of 2017 (which are described in Note 4) have been incorporated into our existing reportable operating segments.

An analysis of our business segment information and reconciliation to the accompanying Consolidated Financial Statements is as follows:

	North American Records and Information Management Business			North American Data Management Business		Western European Business		Other International Business		Corporate and Other Business			Total Consolidated
For the Three Months Ended March 31, 2016
Total Revenues	$	444,681		$	96,343	$	93,876	$	101,341	$	14,449		$	750,690
Depreciation and Amortization	45,350			5,670		11,251		14,286		10,647			87,204
Depreciation	40,255			5,422		8,671		10,902		10,140			75,390
Amortization	5,095			248		2,580		3,384		507			11,814
Adjusted EBITDA	176,557			53,460		31,946		21,576		(48,393		)	235,146
Expenditures for Segment Assets	46,666			4,827		6,060		32,156		17,741			107,450
Capital Expenditures	42,088			4,827		4,059		12,162		17,716			80,852
Cash (Received) Paid for Acquisitions, Net of Cash Acquired	(130		)	—		—		19,470		—			19,340
Acquisitions of Customer Relationships and Customer Inducements	4,708			—		2,001		524		25			7,258
For the Three Months Ended March 31, 2017
Total Revenues	507,597			106,950		120,072		189,241		15,016			938,876
Depreciation and Amortization	60,535			8,933		14,297		27,676		13,266			124,707
Depreciation	51,952			6,673		10,888		19,305		10,774			99,592
Amortization	8,583			2,260		3,409		8,371		2,492			25,115
Adjusted EBITDA	209,530			55,912		34,142		55,347		(62,357		)	292,574
Expenditures for Segment Assets	51,888			8,737		5,025		18,620		22,522			106,792
Capital Expenditures	26,578			8,737		4,898		12,467		20,522			73,202
Cash Paid (Received) for Acquisitions, Net of Cash Acquired	4,379			—		—		5,808		2,000			12,187
Acquisitions of Customer Relationships and Customer Inducements	20,931			—		127		345		—			21,403

The accounting policies of the reportable segments are the same as those described in Note 2 and in our Annual Report. Adjusted EBITDA for each segment is defined as income (loss) from continuing operations before interest expense, net, provision (benefit) for income taxes, depreciation and amortization, and also excludes certain items that we believe are not indicative of our core operating results, specifically: (i) (gain) loss on disposal/write-down of property, plant and equipment (excluding real estate), net; (ii) intangible impairments; (iii) other (income) expense, net; (iv) gain on sale of real estate, net of tax; and (v) Recall Costs (as defined below). Internally, we use Adjusted EBITDA as the basis for evaluating the performance of, and allocating resources to, our operating segments.

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IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(7) Segment Information (Continued)

A reconciliation of Adjusted EBITDA to income (loss) from continuing operations on a consolidated basis is as follows:

	Three Months Ended March 31,
	2016			2017
Adjusted EBITDA	$	235,146		$	292,574
(Add)/Deduct:
(Gain) Loss on Disposal/Write-Down of Property, Plant and Equipment (Excluding Real Estate), Net	(451		)	(459		)
Provision (Benefit) for Income Taxes	11,900			9,220
Other (Income) Expense, Net	(11,937		)	(6,364		)
Interest Expense, Net	67,062			86,055
Depreciation and Amortization	87,204			124,707
Recall Costs(1)	18,327			20,571
Income (Loss) from Continuing Operations	$	63,041		$	58,844

_______________________________________________________________________________

(1) Represents operating expenditures to complete the Recall Transaction, including advisory and professional fees and costs to complete the Divestments required in connection with receipt of regulatory approval, including transitional services required to support the divested businesses during a transition period and operating expenditures to integrate Recall with our existing operations, including moving, severance, facility upgrade, REIT conversion and system upgrade costs ("Recall Costs").

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IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(8) Commitments and Contingencies

a.    Litigation—General

We are involved in litigation from time to time in the ordinary course of business. A portion of the defense and/or

settlement costs associated with such litigation is covered by various commercial liability insurance policies purchased by us

and, in limited cases, indemnification from third parties. Our policy is to establish reserves for loss contingencies when the

losses are both probable and reasonably able to be estimated. We record legal costs associated with loss contingencies as expenses in the period in which they are incurred. The matters described below represent our significant loss contingencies. We have evaluated each matter and, if both probable and reasonably able to be estimated, accrued an amount that represents our estimate of any probable loss associated with such matter. In addition, we have estimated a reasonably possible range for all loss contingencies including those described below. We believe it is reasonably possible that we could incur aggregate losses in addition to amounts currently accrued for all matters up to an additional $20,000 over the next several years, of which certain amounts would be covered by insurance or indemnity arrangements.

b. Italy Fire

On November 4, 2011, we experienced a fire at a facility we leased in Aprilia, Italy. The facility primarily stored archival and inactive business records for local area businesses. Despite quick response by local fire authorities, damage to the building was extensive, and the building and its contents were a total loss. We have been sued by five customers. Four of those lawsuits have been settled and one, a claim asserted by Azienda per i Transporti Autoferrotranviari del Comune di Roma, S.p.A, seeking 42,600 Euros for the loss of its current and historical archives, remains pending. We have also received correspondence from other affected customers, including certain customers demanding payment under various theories of liability. Although our warehouse legal liability insurer has reserved its rights to contest coverage related to certain types of potential claims, we believe we carry adequate insurance. We deny any liability with respect to the fire and we have referred these claims to our warehouse legal liability insurer for an appropriate response. We do not expect that this event will have a material impact on our consolidated financial condition, results of operations or cash flows. We sold our Italian operations on April 27, 2012, and we indemnified the buyers related to certain obligations and contingencies associated with the fire. As a result of the sale of the Italian operations, any future statement of operations and cash flow impacts related to the fire will be reflected as discontinued operations.

c. Argentina Fire

On February 5, 2014, we experienced a fire at a facility we own in Buenos Aires, Argentina. As a result of the quick response by local fire authorities, the fire was contained before the entire facility was destroyed and all employees were safely evacuated; however, a number of first responders lost their lives, or in some cases, were severely injured. The cause of the fire is currently being investigated. We believe we carry adequate insurance and do not expect that this event will have a material impact to our consolidated financial condition, results of operations or cash flows. Revenues from our operations at this facility represent less than 0.5% of our consolidated revenues.

d. Brooklyn Fire (Recall)

On January 31, 2015, a former Recall leased facility located in Brooklyn, New York was completely destroyed by a fire. Approximately 900,000 cartons of customer records were lost impacting approximately 1,200 customers. No one was injured as a result of the fire. We believe we carry adequate insurance to cover any losses resulting from the fire. There are three pending customer-related lawsuits stemming from the fire, which are being defended by our warehouse legal liability insurer. We have also received correspondence from other customers, under various theories of liability. We deny any liability with respect to the fire and we have referred these claims to our insurer for an appropriate response. We do not expect that this event will have a material impact on our consolidated financial condition, results of operations or cash flows.

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IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(8) Commitments and Contingencies (Continued)

e. Roye Fire (Recall)

On January 28, 2002, a former leased Recall records management facility located in Roye, France was destroyed by a fire.

Local French authorities conducted an investigation relating to the fire and issued a charge of criminal negligence for non-compliance with security regulations against the Recall entity that leased the facility. We intend to defend this matter

vigorously. We are currently corresponding with various customers impacted by the fire who are seeking payment under various

theories of liability. There is also pending civil litigation with the owner of the destroyed facility, who is demanding payment

for lost rental income and other items. Based on known and expected claims and our expectation of the ultimate outcome of

those claims, we believe we carry adequate insurance coverage. We do not expect that this event will have a material impact on

our consolidated financial condition, results of operations or cash flows.

(9) Stockholders' Equity Matters

Our board of directors has adopted a dividend policy under which we have paid, and in the future intend to pay, quarterly cash dividends on our common stock. The amount and timing of future dividends will continue to be subject to the approval of our board of directors, in its sole discretion, and to applicable legal requirements.

In fiscal year 2016 and in the first three months of 2017, our board of directors declared the following dividends:

Declaration Date	Dividend Per Share	Record Date	Total Amount		Payment Date
February 17, 2016	0.4850	March 7, 2016	$	102,651	March 21, 2016
May 25, 2016	0.4850	June 6, 2016	127,469		June 24, 2016
July 27, 2016	0.4850	September 12, 2016	127,737		September 30, 2016
October 31, 2016	0.5500	December 15, 2016	145,006		December 30, 2016
February 15, 2017	0.5500	March 15, 2017	145,235		April 3, 2017

(10) Divestments

As disclosed in Note 4, in connection with the acquisition of Recall, we sought regulatory approval of the Recall Transaction from the DOJ, the ACCC, the CCB and the CMA and, as part of the regulatory approval process, we agreed to make the Divestments.

On May 4, 2016, we completed the sale of the Initial United States Divestments to Access CIG, LLC, a privately held provider of information management services throughout the United States (“Access CIG”), for total consideration of approximately $80,000, subject to adjustments (the “Access Sale”). Of the total consideration, we received $55,000 in cash proceeds upon closing of the Access Sale, and we are entitled to receive up to $25,000 of additional cash proceeds on the 27-month anniversary of the closing of the Access Sale (the "Access Contingent Consideration"). Our estimate of the fair value of the Access Contingent Consideration is approximately $21,400 (which reflects a fair value adjustment of approximately $2,200 and a present value adjustment of approximately $1,400). We have a non-trade receivable amounting to $22,000 included in Other, a component of Other Assets, Net in our Consolidated Balance Sheet as of March 31, 2017 related to the Access Contingent Consideration.

On December 29, 2016, we completed the sale of the Seattle/Atlanta Divestments, the Recall Canadian Divestments and the Iron Mountain Canadian Divestments to ARKIVE, Inc., an information management company (“ARKIVE”), for total consideration of approximately $50,000, subject to adjustments (the “ARKIVE Sale”). Of the total consideration, we received approximately $45,000 in cash proceeds upon the closing of the ARKIVE Sale and the remaining consideration is held in escrow. ARKIVE may be entitled to receive from us, on the 24-month anniversary of the closing of the ARKIVE Sale, cash payments, up to the total consideration paid by ARKIVE, based on lost revenues attributable to the acquired customer base.

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IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(10) Divestments (Continued)

On October 31, 2016, after receiving approval of the proposed transaction from the ACCC, we completed the sale of the Australia Divestment Business (the “Australia Sale”) to a consortium led by Housatonic Partners (the “Australia Divestment Business Purchasers”) for total consideration of approximately 70,000 Australian dollars (or approximately $53,200, based upon the exchange rate between the United States dollar and the Australian dollar as of October 31, 2016, the closing date of the Australia Sale), subject to adjustments. The total consideration consists of (i) 35,000 Australian dollars in cash received upon the closing of the Australia Sale and (ii) 35,000 Australian dollars in the form of a note due from the Australia Divestment Business Purchasers to us (the “Bridging Loan Note”). The Bridging Loan Note bears interest at 3.3% per annum and matures on December 29, 2017, at which point all outstanding obligations become due. The total consideration for the Australia Sale is subject to certain adjustments, including ones associated with customer attrition, subsequent to the closing of the Australia Sale.

On December 9, 2016, we completed the sale of the UK Divestments (the "UK Sale") to the Oasis Group for total consideration of approximately 1,800 British pounds sterling (or approximately $2,200, based upon the exchange rate between the United States dollar and the British pound sterling as of December 9, 2016, the closing date of the UK Sale), subject to adjustments.

We have concluded that the Australian Divestment Business and the Iron Mountain Canadian Divestments (collectively, the “Iron Mountain Divestments”) do not meet the criteria to be reported as discontinued operations as our decision to divest these businesses did not represent a strategic shift that had a major effect on our operations and financial results. Accordingly, the revenues and expenses associated with the Iron Mountain Divestments are presented as a component of income (loss) from continuing operations in our Consolidated Statement of Operations for the three months ended March 31, 2016 and the cash flows associated with the Iron Mountain Divestments are presented as a component of cash flows from continuing operations in our Consolidated Statement of Cash Flows for the three months ended March 31, 2016.

We have concluded that the Initial United States Divestments, the Seattle/Atlanta Divestments, the Recall Canadian Divestments and the UK Divestments (collectively, the “Recall Divestments”) meet the criteria to be reported as discontinued operations in our Consolidated Statement of Operations and Consolidated Statement of Cash Flows as the Recall Divestments met the criteria to be reported as assets and liabilities held for sale at, or within a short period of time following, the closing of the Recall Transaction.

The table below summarizes certain results of operations of the Recall Divestments:

	Three Months Ended March 31, 2017
Description	Initial United States Divestments		Seattle/Atlanta Divestments			Recall Canadian Divestments			UK Divestments		Total(1)
Income (Loss) from Discontinued Operations Before Provision (Benefit) for Income Taxes	$	—	$	239		$	(668	)	$	—	$	(429	)
Provision (Benefit) for Income Taxes	—		41		—	(133		)	—		(92		)
Income (Loss) from Discontinued Operations, Net of Tax	$	—	$	198		$	(535	)	$	—	$	(337	)

_____________________________________________________________________________

(1) During the three months ended March 31, 2017, we recognized a loss from discontinued operations before benefit for income taxes of $429, primarily related to costs associated with transitional service agreements related to the Recall Divestments.

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IRON MOUNTAIN INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(In Thousands, Except Share and Per Share Data)

(Unaudited)

(11) Recall Costs

Recall Costs included in the accompanying Consolidated Statements of Operations are as follows:

	Three Months Ended March 31,
	2016		2017
Cost of sales (excluding depreciation and amortization)	$	—	$	7,887
Selling, general and administrative expenses	18,327		12,684
Total Recall Costs	$	18,327	$	20,571

Recall Costs included in the accompanying Consolidated Statements of Operations by segment are as follows:

	Three Months Ended March 31,
	2016		2017
North American Records and Information Management Business	$	39	$	7,299
North American Data Management Business	—		873
Western European Business	217		3,216
Other International Business	431		1,651
Corporate and Other Business	17,640		7,532
Total Recall Costs	$	18,327	$	20,571

A rollforward of accrued liabilities related to Recall Costs on our Consolidated Balance Sheets as of December 31, 2016 to March 31, 2017 is as follows:

	Accrual for Recall Costs
Balance at December 31, 2016	$	4,914
Amounts accrued	5,147
Change in estimates(1)	(230		)
Payments	(5,371		)
Currency translation adjustments	47
Balance at March 31, 2017(2)	$	4,507

_______________________________________________________________________________

(1) Includes adjustments made to amounts accrued in a prior period.

(2) Accrued liabilities related to Recall Costs as of March 31, 2017 presented in the table above generally related to employee severance costs and onerous lease liabilities. We expect that the majority of these liabilities will be paid throughout 2017. Additional Recall Costs recorded in our Consolidated Statement of Operations have either been settled in cash during the three months ended March 31, 2017 or are included in our Consolidated Balance Sheet as of March 31, 2017 as a component of accounts payable.

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IRON MOUNTAIN INCORPORATED

Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis of our financial condition and results of operations for the three months ended March 31, 2017 should be read in conjunction with our Consolidated Financial Statements and Notes thereto for the three months ended March 31, 2017, included herein, and for the year ended December 31, 2016, included in our Annual Report on Form 10-K filed with the United States Securities and Exchange Commission ("SEC") on February 23, 2017 (our "Annual Report").

FORWARD-LOOKING STATEMENTS

We have made statements in this Quarterly Report on Form 10-Q ("Quarterly Report") that constitute "forward-looking statements" as that term is defined in the Private Securities Litigation Reform Act of 1995 and other securities laws. These forward-looking statements concern our operations, economic performance, financial condition, goals, beliefs, future growth strategies, investment objectives, plans and current expectations, such as our (1) commitment to future dividend payments, (2) expected 2017 consolidated internal storage rental revenue growth rate and capital expenditures, (3) estimate of total acquisition and integration expenditures associated with our acquisition of Recall Holdings Limited ("Recall") pursuant to the Scheme Implementation Deed, as amended, with Recall (the "Recall Transaction"), and (4) expected cost savings associated with the Transformation Initiative (as defined below). These forward-looking statements are subject to various known and unknown risks, uncertainties and other factors. When we use words such as "believes," "expects," "anticipates," "estimates" or similar expressions, we are making forward-looking statements. Although we believe that our forward-looking statements are based on reasonable assumptions, our expected results may not be achieved, and actual results may differ materially from our expectations. In addition, important factors that could cause actual results to differ from expectations include, among others:

• our ability to remain qualified for taxation as a real estate investment trust for United States federal income tax purposes ("REIT");

• the adoption of alternative technologies and shifts by our customers to storage of data through non-paper based technologies;

• changes in customer preferences and demand for our storage and information management services;

• the cost to comply with current and future laws, regulations and customer demands relating to data security and privacy issues, as well as fire and safety standards;

• the impact of litigation or disputes that may arise in connection with incidents in which we fail to protect our customers' information;

• changes in the price for our storage and information management services relative to the cost of providing such storage and information management services;

• changes in the political and economic environments in the countries in which our international subsidiaries operate and changes in the global political climate;

• our ability or inability to complete acquisitions on satisfactory terms and to integrate acquired companies efficiently;

• changes in the amount of our capital expenditures;

• changes in the cost of our debt;

• the impact of alternative, more attractive investments on dividends;

• the cost or potential liabilities associated with real estate necessary for our business;

• the performance of business partners upon whom we depend for technical assistance or management expertise outside the United States; and

• other trends in competitive or economic conditions affecting our financial condition or results of operations not presently contemplated.

You should not rely upon forward-looking statements except as statements of our present intentions and of our present expectations, which may or may not occur. You should read these cautionary statements as being applicable to all forward-looking statements wherever they appear. Except as required by law, we undertake no obligation to release publicly the result of any revision to these forward-looking statements that may be made to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events. Readers are also urged to carefully review and consider the various disclosures we have made in this Quarterly Report, as well as our other periodic reports filed with the SEC including under "Risk Factors" in our Annual Report.

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Overview

The following discussions set forth, for the periods indicated, management's discussion and analysis of financial condition and results of operations. Significant trends and changes are discussed for the three month period ended March 31, 2017 within each section.

Recall Acquisition

On May 2, 2016 (Sydney, Australia time), we completed the Recall Transaction. The results of operations of Recall have been included in our consolidated results from May 2, 2016. See Note 4 to Notes to Consolidated Financial Statements included in this Quarterly Report for unaudited pro forma results of operations for us and Recall, as if the Recall Transaction was completed on January 1, 2015, for the three months ended March 31, 2016.

We currently estimate total acquisition and integration expenditures associated with the Recall Transaction to be approximately $380.0 million, the majority of which is expected to be incurred by the end of 2018. This amount consists of (i) operating expenditures to complete the Recall Transaction, including advisory and professional fees and costs to complete the Divestments (as defined in Note 4 to Notes to Consolidated Financial Statements included in this Quarterly Report) including transitional services required to support the divested businesses during a transition period and operating expenditures to integrate Recall with our existing operations, including moving, severance, facility upgrade, REIT conversion and system upgrade costs ("Recall Costs") and (ii) capital expenditures to integrate Recall with our existing operations. From January 1, 2015 through March 31, 2017, we have incurred cumulative operating and capital expenditures associated with the Recall Transaction of $224.2 million, including $199.5 million of Recall Costs and $24.7 million of capital expenditures.

See Note 11 to Notes to Consolidated Financial Statements included in this Quarterly Report for more information on Recall Costs, including costs recorded by segment as well as recorded between cost of sales and selling, general and administrative expenses.

Divestments Associated with the Recall Transaction

As disclosed in Note 4 to Notes to Consolidated Financial Statements included in this Quarterly Report, we sought regulatory approval of the Recall Transaction and, as part of the regulatory approval process, we agreed to make the Divestments.

The Initial United States Divestments, the Seattle/Atlanta Divestments, the Recall Canadian Divestments and the UK Divestments (each as defined in Note 6 to Notes to Consolidated Financial Statements included in our Annual Report) (collectively, the "Recall Divestments") meet the criteria to be reported as discontinued operations as the Recall Divestments met the criteria to be reported as assets and liabilities held for sale at, or within a short period of time following, the closing of the Recall Transaction. Accordingly, the results of operations for the Recall Divestments are presented as a component of

discontinued operations in our Consolidated Statement of Operations for the three months ended March 31, 2017 and the cash flows associated with the Recall Divestments are presented as a component of cash flows from discontinued operations in our Consolidated Statement of Cash Flows for the three months ended March 31, 2017.

The Australia Divestment Business and the Iron Mountain Canadian Divestments (each as defined in Note 6 to Notes to Consolidated Financial Statements included in our Annual Report) (collectively, the "Iron Mountain Divestments") do not meet the criteria to be reported as discontinued operations as our decision to divest the Iron Mountain Divestments does not represent a strategic shift that will have a major effect on our operations and financial results. Accordingly, the revenues and expenses associated with the Iron Mountain Divestments are presented as a component of income (loss) from continuing operations in our Consolidated Statement of Operations for the three months ended March 31, 2016 and the cash flows associated with the Iron Mountain Divestments are presented as a component of cash flows from continuing operations in our Consolidated Statement of Cash Flows for the three months ended March 31, 2016.

The Australia Divestment Business represents approximately $12.2 million of total revenues and approximately $0.1 million of total income from continuing operations for the three months ended March 31, 2016. The Iron Mountain Canadian Divestments represent approximately $1.2 million of total revenues and approximately $0.7 million of total income from continuing operations for the three months ended March 31, 2016. The Australia Divestment Business was previously included in our Other International Business segment and the Iron Mountain Canadian Divestments were previously included in our North American Records and Information Management Business segment.

See Note 10 to Notes to Consolidated Financial Statements included in this Quarterly Report for additional information regarding the presentation of the Divestments in our Consolidated Statements of Operations and Consolidated Statements of Cash Flows for the three months ended March 31, 2017.

46

Transformation Initiative

During the third quarter of 2015, we implemented a plan that calls for certain organizational realignments to reduce our overhead costs by $125.0 million by the end of 2017, particularly in our developed markets, in order to optimize our selling, general and administrative cost structure and to support investments to advance our growth strategy (the "Transformation Initiative"). As a result of the Transformation Initiative, we recorded a charge of $5.7 million for the three months ended March 31, 2016, primarily related to employee severance and associated benefits. We are on target to achieve our $125.0 million cost reduction goal by the end of 2017.

General

Our revenues consist of storage rental revenues as well as service revenues and are reflected net of sales and value added taxes. Storage rental revenues, which are considered a key driver of financial performance for the storage and information management services industry, consist primarily of recurring periodic rental charges related to the storage of materials or data (generally on a per unit basis) that are typically retained by customers for many years and technology escrow services that protect and manage source code. Service revenues include charges for related service activities, which include: (1) the handling of records, including the addition of new records, temporary removal of records from storage, refiling of removed records and the destruction of records; (2) courier operations, consisting primarily of the pickup and delivery of records upon customer request; (3) secure shredding of sensitive documents and the related sale of recycled paper, the price of which can fluctuate from period to period; (4) other services, including the scanning, imaging and document conversion services of active and inactive records, or Information Governance and Digital Solutions, which relate to physical and digital records, and project revenues; (5) customer termination and permanent removal fees; (6) data restoration projects; (7) special project work; (8) the storage, assembly, reporting and delivery of customer marketing literature, or fulfillment services; (9) consulting services; and (10) other technology services and product sales (including specially designed storage containers and related supplies). Our service revenue growth has been negatively impacted by declining activity rates as stored records are becoming less active. While customers continue to store their records and tapes with us, they are less likely than they have been in the past to retrieve records for research and other purposes, thereby reducing service activity levels.

Cost of sales (excluding depreciation and amortization) consists primarily of wages and benefits for field personnel, facility occupancy costs (including rent and utilities), transportation expenses (including vehicle leases and fuel), other product cost of sales and other equipment costs and supplies. Of these, wages and benefits and facility occupancy costs are the most significant. Selling, general and administrative expenses consist primarily of wages and benefits for management, administrative, information technology, sales, account management and marketing personnel, as well as expenses related to communications and data processing, travel, professional fees, bad debts, training, office equipment and supplies. Trends in facility occupancy costs are impacted by the total number of facilities we occupy, the mix of properties we own versus properties we occupy under operating leases, fluctuations in per square foot occupancy costs, and the levels of utilization of these properties. Trends in total wages and benefits in dollars and as a percentage of total consolidated revenue are influenced by changes in headcount and compensation levels, achievement of incentive compensation targets, workforce productivity and variability in costs associated with medical insurance and workers' compensation.

The expansion of our international businesses has impacted the major cost of sales components and selling, general and administrative expenses. Our international operations are more labor intensive than our operations in North America and, therefore, labor costs are a higher percentage of international segment revenue. In addition, the overhead structure of our expanding international operations has not achieved the same level of overhead leverage as our North American segments, which may result in an increase in selling, general and administrative expenses, as a percentage of consolidated revenue, as our international operations become a more meaningful percentage of our consolidated results.

Our depreciation and amortization charges result primarily from the capital-intensive nature of our business. The principal components of depreciation relate to storage systems, which include racking structures, buildings, building and leasehold improvements and computer systems hardware and software. Amortization relates primarily to customer relationship intangible assets. Both depreciation and amortization are impacted by the timing of acquisitions.

47

Our consolidated revenues and expenses are subject to variations caused by the net effect of foreign currency translation incurred by our entities outside the United States. It is difficult to predict the future fluctuations of foreign currency exchange rates and how those fluctuations will impact our Consolidated Statements of Operations. As a result of the relative size of our international operations, these fluctuations may be material on individual balances. Our revenues and expenses from our international operations are generally denominated in the local currency of the country in which they are derived or incurred. Therefore, the impact of currency fluctuations on our operating income and operating margin is partially mitigated. In order to provide a framework for assessing how our underlying businesses performed excluding the effect of foreign currency fluctuations, we compare the percentage change in the results from one period to another period in this report using constant currency presentation. The constant currency growth rates are calculated by translating the 2016 results at the 2017 average exchange rates. Constant currency growth rates are a non-GAAP measure.

The following table is a comparison of underlying average exchange rates of the foreign currencies that had the most significant impact on our United States dollar-reported revenues and expenses:

	Average Exchange Rates for the Three Months Ended March 31,				Percentage Strengthening / (Weakening) of Foreign Currency
	2016		2017
Australian dollar	$	0.722	$	0.758	5.0	%
Brazilian real	$	0.257	$	0.318	23.7	%
British pound sterling	$	1.433	$	1.239	(13.5	)%
Canadian dollar	$	0.729	$	0.756	3.7	%
Euro	$	1.103	$	1.066	(3.4	)%

48

Non-GAAP Measures

Adjusted EBITDA

Adjusted EBITDA is defined as income (loss) from continuing operations before interest expense, net, provision (benefit) for income taxes, depreciation and amortization, and also excludes certain items that we believe are not indicative of our core operating results, specifically: (i) (gain) loss on disposal/write-down of property, plant and equipment (excluding real estate), net; (ii) intangible impairments; (iii) other (income) expense, net; (iv) gain on sale of real estate, net of tax; and (v) Recall Costs. Adjusted EBITDA Margin is calculated by dividing Adjusted EBITDA by total revenues. We use multiples of current or projected Adjusted EBITDA in conjunction with our discounted cash flow models to determine our estimated overall enterprise valuation and to evaluate acquisition targets. We believe Adjusted EBITDA and Adjusted EBITDA Margin provide our current and potential investors with relevant and useful information regarding our ability to generate cash flow to support business investment. These measures are an integral part of the internal reporting system we use to assess and evaluate the operating performance of our business.

Adjusted EBITDA excludes both interest expense, net and the provision (benefit) for income taxes. These expenses are associated with our capitalization and tax structures, which we do not consider when evaluating the operating profitability of our core operations. Finally, Adjusted EBITDA does not include depreciation and amortization expenses, in order to eliminate the impact of capital investments, which we evaluate by comparing capital expenditures to incremental revenue generated and as a percentage of total revenues. Adjusted EBITDA and Adjusted EBITDA Margin should be considered in addition to, but not as a substitute for, other measures of financial performance reported in accordance with accounting principles generally accepted in the United States of America ("GAAP"), such as operating income, income (loss) from continuing operations, net income (loss) or cash flows from operating activities from continuing operations (as determined in accordance with GAAP).

Reconciliation of Income (Loss) from Continuing Operations to Adjusted EBITDA (in thousands):

	Three Months Ended March 31,
	2016			2017
Income (Loss) from Continuing Operations	$	63,041		$	58,844
Add/(Deduct):
Provision (Benefit) for Income Taxes	11,900			9,220
Other (Income) Expense, Net	(11,937		)	(6,364		)
Interest Expense, Net	67,062			86,055
(Gain) Loss on Disposal/Write-Down of Property, Plant and Equipment (Excluding Real Estate), Net	(451		)	(459		)
Depreciation and Amortization	87,204			124,707
Recall Costs	18,327			20,571
Adjusted EBITDA	$	235,146		$	292,574

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Adjusted EPS

Adjusted EPS is defined as reported earnings per share fully diluted from continuing operations excluding: (1) (gain) loss on disposal/write-down of property, plant and equipment (excluding real estate), net; (2) gain on sale of real estate, net of tax; (3) intangible impairments; (4) other (income) expense, net; (5) Recall Costs; and (6) the tax impact of reconciling items and discrete tax items. Adjusted EPS includes income (loss) attributable to noncontrolling interests. We do not believe these excluded items to be indicative of our ongoing operating results, and they are not considered when we are forecasting our future results. We believe Adjusted EPS is of value to our current and potential investors when comparing our results from past, present and future periods.

Reconciliation of Reported EPS—Fully Diluted from Continuing Operations to Adjusted EPS—Fully Diluted from Continuing Operations:

	Three Months Ended March 31,
	2016			2017
Reported EPS—Fully Diluted from Continuing Operations	$	0.30		$	0.22
Add/(Deduct):
Income (Loss) Attributable to Noncontrolling Interests	—			—
Other (Income) Expense, Net	(0.06		)	(0.02		)
(Gain) Loss on Disposal/Write-Down of Property, Plant and Equipment (Excluding Real Estate), Net	—			—
Recall Costs	0.09			0.08
Tax Impact of Reconciling Items and Discrete Tax Items(1)	—			(0.04		)
Adjusted EPS—Fully Diluted from Continuing Operations(2)	$	0.33		$	0.24

_______________________________________________________________________________

(1) The difference between our effective tax rate and our structural tax rate (or adjusted effective tax rate) for the three months ended March 31, 2016 and 2017, respectively, is primarily due to (i) the reconciling items above, which impact our reported income (loss) from continuing operations before provision (benefit) for income taxes but have an insignificant impact on our reported provision (benefit) for income taxes and (ii) other discrete tax items. Our structural tax rate for purposes of the calculation of Adjusted EPS for the three months ended March 31, 2016 and 2017 was 14.0% and 23.1%, respectively.

(2) Columns may not foot due to rounding.

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FFO (NAREIT) and FFO (Normalized)

Funds from operations (“FFO”) is defined by the National Association of Real Estate Investment Trusts ("NAREIT") and us as net income excluding depreciation on real estate assets and gain on sale of real estate, net of tax (“FFO (NAREIT)”). FFO (NAREIT) does not give effect to real estate depreciation because these amounts are computed, under GAAP, to allocate the cost of a property over its useful life. Because values for well-maintained real estate assets have historically increased or decreased based upon prevailing market conditions, we believe that FFO (NAREIT) provides investors with a clearer view of our operating performance. Our most directly comparable GAAP measure to FFO (NAREIT) is net income. Although NAREIT has published a definition of FFO, modifications to FFO (NAREIT) are common among REITs as companies seek to provide financial measures that most meaningfully reflect their particular business. Our definition of FFO (Normalized) excludes certain items included in FFO (NAREIT) that we believe are not indicative of our core operating results, specifically: (1) (gain) loss on disposal/write-down of property, plant and equipment (excluding real estate), net; (2) intangible impairments; (3) other (income) expense, net; (4) Recall Costs; (5) the tax impact of reconciling items and discrete tax items; (6) loss (income) from discontinued operations, net of tax; and (7) loss (gain) on sale of discontinued operations, net of tax.

Reconciliation of Net Income (Loss) to FFO (NAREIT) and FFO (Normalized) (in thousands):

	Three Months Ended March 31,
	2016			2017
Net Income (Loss)	$	63,041		$	58,507
Add/(Deduct):
Real Estate Depreciation(1)	45,063			62,956
FFO (NAREIT)	108,104			121,463
Add/(Deduct):
(Gain) Loss on Disposal/Write-Down of Property, Plant and Equipment (Excluding Real Estate), Net	(451		)	(459		)
Other (Income) Expense, Net(2)	(11,937		)	(6,364		)
Recall Costs	18,327			20,571
Tax Impact of Reconciling Items and Discrete Tax Items(3)	577			(9,678		)
Loss (Income) from Discontinued Operations, Net of Tax(4)	—			337
FFO (Normalized)	$	114,620		$	125,870

_______________________________________________________________________________

(1) Includes depreciation expense related to real estate assets (land improvements, buildings, building improvements, leasehold improvements and racking).

(2) Includes foreign currency transaction (gains) losses, net of $(12.5) million and $(4.2) million in the three months ended March 31, 2016 and 2017, respectively.

(3) Represents the tax impact of (i) the reconciling items above, which impact our reported income (loss) from continuing operations before provision (benefit) for income taxes but have an insignificant impact on our reported provision (benefit) for income taxes and (ii) other discrete tax items.

(4) Net of tax benefit of $0.1 million for the three months ended March 31, 2017.

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Critical Accounting Policies

Our discussion and analysis of our financial condition and results of operations are based upon our Consolidated Financial Statements, which have been prepared in accordance with GAAP. The preparation of these financial statements requires us to make estimates, judgments and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities at the date of the financial statements and for the period then ended. On an ongoing basis, we evaluate the estimates used. We base our estimates on historical experience, actuarial estimates, current conditions and various other assumptions that we believe to be reasonable under the circumstances. These estimates form the basis for making judgments about the carrying values of assets and liabilities and are not readily apparent from other sources. Actual results may differ from these estimates. Our critical accounting policies include the following, which are listed in no particular order:

• Revenue Recognition

• Accounting for Acquisitions

• Impairment of Tangible and Intangible Assets

• Income Taxes

Further detail regarding our critical accounting policies can be found in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Annual Report, and the Consolidated Financial Statements and the Notes included therein. We have determined that no material changes concerning our critical accounting policies have occurred since December 31, 2016.

Recent Accounting Pronouncements

See Note 2.k. to Notes to Consolidated Financial Statements included in this Quarterly Report for a description of recently issued accounting pronouncements, including those recently adopted.

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Results of Operations

Comparison of three months ended March 31, 2017 to three months ended March 31, 2016 (in thousands):

	Three Months Ended March 31,
							Dollar Change			Percentage Change
	2016			2017
Revenues	$	750,690		$	938,876		$	188,186		25.1	%
Operating Expenses	620,624			791,121			170,497			27.5	%
Operating Income	130,066			147,755			17,689			13.6	%
Other Expenses, Net	67,025			88,911			21,886			32.7	%
Income from Continuing Operations	63,041			58,844			(4,197		)	(6.7	)%
Loss from Discontinued Operations, Net of Tax	—			(337		)	(337		)	(100.0	)%
Net Income	63,041			58,507			(4,534		)	(7.2	)%
Net Income Attributable to Noncontrolling Interests	267			382			115			43.1	%
Net Income Attributable to Iron Mountain Incorporated	$	62,774		$	58,125		$	(4,649	)	(7.4	)%
Adjusted EBITDA(1)	$	235,146		$	292,574		$	57,428		24.4	%
Adjusted EBITDA Margin(1)	31.3		%	31.2		%

_______________________________________________________________________________

(1) See "Non-GAAP Measures—Adjusted EBITDA" in this Quarterly Report for the definition, reconciliation and a discussion of why we believe these measures provide relevant and useful information to our current and potential investors.

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REVENUES

Consolidated revenues consists of the following (in thousands):

	Three Months Ended March 31,						Percentage Change
					Dollar Change		Actual		Constant Currency(1)		Internal Growth(2)
	2016		2017
Storage Rental	$	461,211	$	572,279	$	111,068	24.1	%	24.6	%	3.0	%
Service	289,479		366,597		77,118		26.6	%	26.7	%	0.6	%
Total Revenues	$	750,690	$	938,876	$	188,186	25.1	%	25.4	%	2.0	%

_______________________________________________________________________________

(1) Constant currency growth rates are calculated by translating the 2016 results at the 2017 average exchange rates.

(2) Our internal revenue growth rate, which is a non-GAAP measure, represents the weighted average year-over-year growth rate of our revenues excluding the impact of business acquisitions, divestitures and foreign currency exchange rate fluctuations. The revenues generated by Recall have been integrated with our existing revenues and it is impracticable for us to determine actual Recall revenue contribution for the applicable periods. Therefore, our internal revenue growth rates exclude the impact of revenues associated with the Recall Transaction based upon forecasted or budgeted Recall revenues beginning in the third quarter of 2016. Our internal revenue growth rate includes the impact of acquisitions of customer relationships.

Storage Rental Revenues

Consolidated storage rental revenues increased $111.1 million, or 24.1%, to $572.3 million for the three months ended March 31, 2017 from $461.2 million for the three months ended March 31, 2016. In the three months ended March 31, 2017, the net impact of acquisitions/divestitures and consolidated internal storage rental revenue growth were partially offset by unfavorable fluctuations in foreign currency exchange rates compared to the three months ended March 31, 2016. The net impact of acquisitions/divestitures contributed 21.6% to the reported storage rental revenue growth rate for the three months ended March 31, 2017 compared to the comparable prior year period, primarily driven by our acquisition of Recall. Internal storage rental revenue growth of 3.0% in the three months ended March 31, 2017 compared to the comparable prior year period was driven by internal storage rental revenue growth of 2.7%, 1.7% and 8.3% in our North American Data Management Business, Western European Business and Other International Business segments, respectively, primarily driven by volume increases, as well as internal storage rental revenue growth of 1.9% in our North American Records and Information Management Business segment, primarily driven by net price increases. Excluding the impact of acquisitions, global records management net volumes as of March 31, 2017 increased by 1.9% over the ending volume as of March 31, 2016. These increases were partially offset by the impact of foreign currency exchange rate fluctuations, which decreased our reported storage rental revenue growth rate for the three months ended March 31, 2017 by 0.5% compared to the comparable prior year period. Global records management reported net volumes, including the impact of acquisitions, as of March 31, 2017 increased by 25.0% over the ending volume at March 31, 2016, supported by volume increases across each of our reportable operating segments, primarily associated with the acquisition of Recall.

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Service Revenues

Consolidated service revenues increased $77.1 million, or 26.6%, to $366.6 million for the three months ended March 31, 2017 from $289.5 million for the three months ended March 31, 2016. In the three months ended March 31, 2017, the net impact of acquisitions/divestitures and consolidated internal service revenue growth were partially offset by unfavorable fluctuations in foreign currency exchange rates compared to the three months ended March 31, 2016. The net impact of acquisitions/divestitures contributed 26.1% to the reported service revenue growth rate for the three months ended March 31, 2017 compared to the comparable prior year period, primarily driven by our acquisition of Recall. Internal service revenue growth was 0.6% for the three months ended March 31, 2017 compared to the comparable prior year period. The internal service revenue growth for the three months ended March 31, 2017 reflects growth in secure shredding revenues, in part due to higher recycled paper prices, and the stabilization in recent periods of the decline in retrieval/re-file activity and the related decrease in transportation revenues within our North American Records and Information Management Business, as well as increased special project work within our Western European Business segment, partially offset by continued declines in service revenue activity levels in our North American Data Management Business segment, as the storage business becomes more archival in nature. Foreign currency exchange rate fluctuations decreased our reported total service revenues by 0.1% for the three months ended March 31, 2017 compared to the comparable prior year period.

Total Revenues

For the reasons stated above, our consolidated revenues increased $188.2 million, or 25.1%, to $938.9 million for the three months ended March 31, 2017 from $750.7 million for the three months ended March 31, 2016. The net impact of acquisitions/divestitures contributed 23.4% to the reported consolidated revenue growth rate for the three months ended March 31, 2017 compared to the comparable prior year period, primarily driven by our acquisition of Recall. Consolidated internal revenue growth was 2.0% in the three months ended March 31, 2017 compared to the comparable prior year period. These increases were partially offset by the impact of foreign currency exchange rate fluctuations, which decreased our reported consolidated revenues by 0.3% in the three months ended March 31, 2017 compared to the comparable prior year period, primarily due to the weakening of the British pound sterling and the Euro against the United States dollar, based on an analysis of weighted average rates for the comparable period.

Internal Growth—Eight-Quarter Trend

	2015						2016								2017
	Second Quarter		Third Quarter		Fourth Quarter		First Quarter		Second Quarter		Third Quarter		Fourth Quarter		First Quarter
Storage Rental Revenue	2.7	%	2.8	%	2.2	%	2.2	%	2.1	%	2.1	%	2.9	%	3.0	%
Service Revenue	—	%	(0.9	)%	0.3	%	1.6	%	(2.1	)%	(1.3	)%	(0.9	)%	0.6	%
Total Revenue	1.6	%	1.3	%	1.4	%	2.0	%	0.4	%	0.8	%	1.4	%	2.0	%

We expect our consolidated internal storage rental revenue growth rate for 2017 to be approximately 2.0% to 2.5%. During the past eight quarters, our internal storage rental revenue growth rate has ranged between 2.1% and 3.0%. Our internal storage rental revenue growth rates have been relatively stable over the past two fiscal years, as internal storage rental revenue growth for full year 2015 and 2016 were 2.7% and 2.3%, respectively. At various points in the economic cycle, internal storage rental revenue growth may be influenced by changes in pricing and volume. Within our international portfolio, the Western European Business segment is generating consistent low single-digit internal storage rental revenue growth, while the Other International Business segment is producing high single-digit internal storage rental revenue growth by capturing the first-time outsourcing trends for physical records storage and management in those markets. The internal growth rate for service revenue is inherently more volatile than the internal growth rate for storage rental revenues due to the more discretionary nature of certain services we offer, such as large special projects, and, as a commodity, the volatility of pricing for recycled paper. These revenues, which are often event-driven and impacted to a greater extent by economic downturns as customers defer or cancel the purchase of certain services as a way to reduce their short-term costs, may be difficult to replicate in future periods. The internal growth rate for total service revenues over the past eight quarters reflects reduced retrieval/re-file activity and a related decrease in transportation revenues within our North American Records and Information Management Business and Western European Business segments, as well as continued service declines in service revenue activity levels in our North American Data Management Business segment as the storage business becomes more archival in nature.

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OPERATING EXPENSES

Cost of Sales

Consolidated cost of sales (excluding depreciation and amortization) consists of the following expenses (in thousands):

	Three Months Ended March 31,						Percentage Change				% of Consolidated Revenues				Percentage Change (Favorable)/ Unfavorable
					Dollar Change		Actual		Constant Currency
	2016		2017								2016		2017
Labor	$	169,028	$	200,160	$	31,132	18.4	%	18.2	%	22.5	%	21.3	%	(1.2	)%
Facilities	104,194		144,253		40,059		38.4	%	38.2	%	13.9	%	15.4	%	1.5	%
Transportation	25,249		35,221		9,972		39.5	%	39.9	%	3.4	%	3.8	%	0.4	%
Product Cost of Sales and Other	27,634		39,186		11,552		41.8	%	41.4	%	3.7	%	4.2	%	0.5	%
Recall Costs	—		7,887		7,887		100.0	%	100.0	%	—	%	0.8	%	0.8	%
	$	326,105	$	426,707	$	100,602	30.8	%	30.6	%	43.4	%	45.4	%	2.0	%

Labor

Labor expenses decreased to 21.3% of consolidated revenues in the three months ended March 31, 2017 compared to 22.5% in the three months ended March 31, 2016. The decrease in labor expenses as a percentage of consolidated revenues was driven by a 185 basis point decrease in labor expenses associated with our North American Records and Information Management Business segment as a percentage of consolidated revenues (11.61% in the three months ended March 31, 2017 compared to 13.46% in the comparable prior year period), primarily associated with wages and benefits growing at a lower rate than revenue, partially attributable to synergies associated with our acquisition of Recall. This decrease was partially offset by a 91 basis point increase in labor expenses associated with our Other International Business segment as a percentage of consolidated revenues (4.79% in the three months ended March 31, 2017 compared to 3.88% in the comparable prior year period), primarily associated with increased wages and benefits. Labor expenses for the three months ended March 31, 2017 increased by $30.8 million, or 18.2%, on a constant dollar basis compared to the comparable prior year period, primarily driven by our acquisition of Recall.

Facilities

Facilities expenses increased to 15.4% of consolidated revenues in the three months ended March 31, 2017 compared to 13.9% in the three months ended March 31, 2016. The 150 basis point increase in facilities expenses as a percentage of consolidated revenues was primarily driven by an increase in rent expense as a result of the acquisition of Recall, as Recall's real estate portfolio contains a more significant proportion of leased facilities than our real estate portfolio as it existed prior to the closing of the Recall Transaction, as well as an increase in other facilities costs. The increase in other facilities costs was primarily driven by increased property taxes, primarily associated with our Western European Business segment. Facilities expenses for the three months ended March 31, 2017 increased by $39.9 million, or 38.2%, on a constant dollar basis compared to the comparable prior year period, primarily driven by our acquisition of Recall.

Transportation

Transportation expenses increased to 3.8% of consolidated revenues in the three months ended March 31, 2017 compared to 3.4% in the three months ended March 31, 2016. The increase in transportation expenses as a percentage of consolidated revenues was driven by an increase in third party carrier costs as a percentage of consolidated revenue, primarily associated with our Other International Business segment. Transportation expenses for the three months ended March 31, 2017 increased by $10.0 million, or 39.9%, on a constant dollar basis compared to the comparable prior year period, primarily driven by our acquisition of Recall.

Product Cost of Sales and Other

Product cost of sales and other, which includes cartons, media and other service, storage and supply costs and is highly correlated to service revenue streams, particularly project revenues, increased to 4.2% of consolidated revenues for the three months ended March 31, 2017 compared to 3.7% in the three months ended March 31, 2016. The increase in product cost of sales and other was driven by special project costs. Product cost of sales and other increased by $11.5 million, or 41.4%, on a constant dollar basis compared to the comparable prior year period, primarily driven by our acquisition of Recall.

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Recall Costs

Recall Costs included in cost of sales were $7.9 million in the three months ended March 31, 2017, and primarily consisted of employee severance costs and facility integration costs.

Selling, General and Administrative Expenses

Selling, general and administrative expenses consists of the following expenses (in thousands):

	Three Months Ended March 31,								Percentage Change				% of Consolidated Revenues				Percentage Change (Favorable)/ Unfavorable
						Dollar Change			Actual		Constant Currency
	2016		2017										2016		2017
General and Administrative	$	111,988	$	134,800		$	22,812		20.4	%	21.2	%	14.9	%	14.4	%	(0.5	)%
Sales, Marketing & Account Management	53,222		63,306			10,084			18.9	%	19.7	%	7.1	%	6.7	%	(0.4	)%
Information Technology	24,091		31,793			7,702			32.0	%	33.1	%	3.2	%	3.4	%	0.2	%
Bad Debt Expense	138		(2,417		)	(2,555		)	(1,851.4	)%	(1,563.9	)%	—	%	(0.3	)%	(0.3	)%
Recall Costs	18,327		12,684			(5,643		)	(30.8	)%	(30.8	)%	2.4	%	1.4	%	(1.0	)%
	$	207,766	$	240,166		$	32,400		15.6	%	16.3	%	27.7	%	25.6	%	(2.1	)%

General and Administrative

General and administrative expenses decreased to 14.4% of consolidated revenues in the three months ended March 31, 2017 compared to 14.9% in the three months ended March 31, 2016. The decrease in general and administrative expenses as a percentage of consolidated revenues was driven mainly by a decrease in compensation expense, primarily associated with wages and benefits growing at a lower rate than revenue, partially attributable to the Transformation Initiative and synergies associated with our acquisition of Recall, partially offset by an increase in professional fees. General and administrative expenses for the three months ended March 31, 2017 increased by $23.5 million, or 21.2%, on a constant dollar basis compared to the comparable prior year period, primarily driven by our acquisition of Recall.

Sales, Marketing & Account Management

Sales, marketing and account management expenses decreased to 6.7% of consolidated revenues in the three months ended March 31, 2017 compared to 7.1% in the three months ended March 31, 2016. The decrease in sales, marketing and account management expenses as a percentage of consolidated revenues was driven by a decrease in compensation expense, primarily associated with wages and benefits growing at a lower rate than revenue, partially attributable to the Transformation Initiative and synergies associated with our acquisition of Recall. Sales, marketing and account management expenses for the three months ended March 31, 2017 increased by $10.4 million, or 19.7%, on a constant dollar basis compared to the comparable prior year period, primarily driven by our acquisition of Recall.

Information Technology

Information technology expenses increased to 3.4% of consolidated revenues in the three months ended March 31, 2017 compared to 3.2% in the three months ended March 31, 2016. The increase in information technology expenses as a percentage of consolidated revenues was driven by an increase in maintenance and software license fees, primarily in our Corporate and Other Business segment. Information technology expenses for the three months ended March 31, 2017 increased by $7.9 million, or 33.1%, on a constant dollar basis compared to the comparable prior year period, primarily driven by our acquisition of Recall.

Bad Debt Expense

We maintain an allowance for doubtful accounts that is calculated based on our past loss experience, current and prior trends in our aged receivables, current economic conditions, and specific circumstances of individual receivable balances. We continue to monitor our customers' payment activity and make adjustments based on their financial condition and in light of historical and expected trends. Bad debt expenses for the three months ended March 31, 2017 decreased by $2.6 million on a constant dollar basis compared to the comparable prior year period, primarily driven by lower bad debt expense associated with our North American Records and Information Management Business segment.

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Recall Costs

Recall Costs included in selling, general and administrative expenses were $12.7 million in the three months ended March 31, 2017, and primarily consisted of advisory and professional fees, as well as severance costs. Recall Costs included in selling, general and administrative expenses were $18.3 million in the three months ended March 31, 2016, and primarily consisted of advisory and professional fees.

Depreciation and Amortization

Depreciation expense increased $24.2 million, or 32.1%, on a reported dollar basis ($24.2 million, or 32.2%, on a constant dollar basis) for the three months ended March 31, 2017 compared to the three months ended March 31, 2016, primarily due to the increased depreciation of property, plant and equipment acquired in the Recall Transaction. See Note 2.f. to Notes to Consolidated Financial Statements in our Annual Report for additional information regarding the useful lives over which our property, plant and equipment is depreciated.

Amortization expense increased $13.3 million, or 112.7%, on a reported dollar basis ($13.4 million, or 113.7%, on a constant dollar basis) for the three months ended March 31, 2017 compared to the three months ended March 31, 2016, primarily due to the increased amortization of customer relationship intangible assets acquired in the Recall Transaction, which are amortized over a weighted average useful life of 13 years.

OTHER EXPENSES, NET

Interest Expense, Net

Consolidated interest expense, net increased $19.0 million to $86.1 million for the three months ended March 31, 2017 from $67.1 million for the three months ended March 31, 2016 primarily due to (i) the issuance of $500.0 million in aggregate principal amount of 4³/₈% Senior Notes due 2021 (the "4³/₈% Notes") by Iron Mountain Incorporated ("IMI") in May 2016, (ii) the issuance of $250.0 million in aggregate principal amount of 5³/₈% Senior Notes due 2026 (the "5³/₈% Notes") by Iron Mountain US Holdings, Inc. ("IM US Holdings") in May 2016, (iii) the issuance of 250.0 million Canadian dollars in aggregate principal amount of 5³/₈% CAD Senior Notes due 2023 (the "CAD Notes due 2023") by Iron Mountain Canada Operations, ULC ("Canada Company") in September 2016, (iv) $185.8 million of borrowings from the Australian Dollar Term Loan during the third quarter of 2016 and (v) higher borrowings (on a weighted average basis) under the Revolving Credit Facility (as defined below) during the three months ended March 31, 2017 compared to the three months ended March 31, 2016. Our weighted average interest rate was 5.3% and 5.2% at March 31, 2017 and 2016, respectively.

Other (Income) Expense, Net (in thousands)

	Three Months Ended March 31,						Dollar Change
	2016			2017
Foreign currency transaction (gains) losses, net	$	(12,542	)	$	(4,164	)	$	8,378
Other, net	605			(2,200		)	(2,805		)
	$	(11,937	)	$	(6,364	)	$	5,573

Foreign Currency Transaction (Gains) Losses

We recorded net foreign currency transaction gains of $4.2 million in the three months ended March 31, 2017, based on period-end exchange rates. These gains resulted primarily from the impact of changes in the exchange rate of each of the Brazilian real, Mexican peso and Russian ruble against the United States dollar compared to December 31, 2016 on our intercompany balances with and between certain of our subsidiaries. These gains were partially offset by losses resulting primarily from the impact of changes in the exchange rate of each of the British pound sterling and Euro against the United States dollar compared to December 31, 2016 on our intercompany balances with and between certain of our subsidiaries.

58

We recorded net foreign currency transaction gains of $12.5 million in the three months ended March 31, 2016, based on period-end exchange rates. These gains resulted primarily from the impact of changes in the exchange rate of each of the Brazilian real, British pound sterling, Euro, and Russian ruble against the United States dollar compared to December 31, 2015 on our intercompany balances with and between certain of our subsidiaries. These gains were partially offset by losses resulting primarily from the impact of changes in the exchange rate of each of the Argentine peso and Ukrainian hryvnia against the United States dollar compared to December 31, 2015 on our intercompany balances with and between certain of our subsidiaries, as well as a change in the exchange rate of the Euro against the United States dollar compared to December 31, 2015 on Euro denominated borrowings by IMI under our Revolving Credit Facility.

Provision for Income Taxes

We provide for income taxes during interim periods based on our estimate of the effective tax rate for the year. Discrete items and changes in our estimate of the annual effective tax rate are recorded in the period they occur. Our effective tax rate is subject to variability in the future due to, among other items: (1) changes in the mix of income between our qualified REIT subsidiaries ("QRSs") and our domestic taxable REIT subsidiaries ("TRSs"), as well as among the jurisdictions in which we operate; (2) tax law changes; (3) volatility in foreign exchange gains and losses; (4) the timing of the establishment and reversal of tax reserves; and (5) our ability to utilize net operating losses that we generate.

Our effective tax rate for the three months ended March 31, 2016 and 2017 was 15.9% and 13.5%, respectively. The primary reconciling items between the federal statutory tax rate of 35.0% and our overall effective tax rate in the three months ended March 31, 2016 were the benefit derived from the dividends paid deduction and differences in the rates of tax at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates. The primary reconciling items between the federal statutory tax rate of 35.0% and our overall effective tax rate in the three months ended March 31, 2017 were the benefit derived from the dividends paid deduction, a release of valuation allowances on certain of our foreign net operating losses of $7.5 million as a result of the merger of certain of our foreign subsidiaries and differences in the rates of tax at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates. These benefits were partially offset by the impact of a legislative change enacted in the first quarter of 2017 in the United Kingdom which eliminated the deductibility of certain interest expense and increased our tax provision for the first quarter of 2017 by $1.8 million, or 2.5%. We are seeking an exemption from Her Majesty's Revenue and Customs but have not as yet received clarification on our request and, therefore, we have reflected the incremental tax associated with this legislative change into our annual effective tax rate.

As a result of the 2016 Indefinite Reinvestment Assessment (as defined in Note 2.e. to Notes to Consolidated Financial Statements included in this Quarterly Report), we concluded that it is our intent to indefinitely reinvest our current and future undistributed earnings of our unconverted foreign TRSs outside the United States. Accordingly, we no longer provide incremental foreign withholding taxes on the retained book earnings of these unconverted foreign TRSs. As a REIT, future repatriation of incremental undistributed earnings of our foreign subsidiaries will not be subject to federal or state income tax, with the exception of foreign withholding taxes in limited instances; however, such future repatriations will require distribution in accordance with REIT distribution rules, and any such distribution may then be taxable, as appropriate, at the stockholder level. We continue, however, to provide for incremental foreign withholding taxes on net book over outside basis differences related to the earnings of our foreign QRSs and certain of our converted TRSs.

As a REIT, we are entitled to a deduction for dividends paid, resulting in a substantial reduction of federal income tax expense, and substantially all of our income tax expense will be incurred based on the earnings generated by our foreign subsidiaries and our domestic TRSs.

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INCOME FROM CONTINUING OPERATIONS AND ADJUSTED EBITDA (in thousands)

The following table reflects the effect of the foregoing factors on our consolidated income from continuing operations and Adjusted EBITDA:

	Three Months Ended March 31,						Dollar Change			Percentage Change
	2016			2017
Income from Continuing Operations	$	63,041		$	58,844		$	(4,197	)	(6.7	)%
Income from Continuing Operations as a percentage of Consolidated Revenue	8.4		%	6.3		%
Adjusted EBITDA	235,146			292,574			57,428			24.4	%
Adjusted EBITDA Margin	31.3		%	31.2		%

LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX

Loss from discontinued operations, net of tax was $0.3 million for the three months ended March 31, 2017, primarily related to the operations of the Recall Divestments.

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NONCONTROLLING INTERESTS

For the three months ended March 31, 2016 and 2017, net income attributable to noncontrolling interests resulted in a decrease in net income attributable to IMI of $0.3 million and $0.4 million, respectively. These amounts represent our noncontrolling partners' share of earnings/losses in our majority-owned international subsidiaries that are consolidated in our operating results.

Segment Analysis (in thousands)

See Note 7 to Notes to Consolidated Financial Statements included in this Quarterly Report for a description of our reportable operating segments.

North American Records and Information Management Business

	Three Months Ended March 31,								Percentage Change
							Dollar Change		Actual		Constant Currency		Internal Growth
	2016			2017
Storage Rental	$	267,223		$	298,183		$	30,960	11.6	%	11.2	%	1.9	%
Service	177,458			209,414			31,956		18.0	%	17.5	%	1.1	%
Segment Revenue	$	444,681		$	507,597		$	62,916	14.1	%	13.7	%	1.6	%
Segment Adjusted EBITDA(1)	$	176,557		$	209,530		$	32,973
Segment Adjusted EBITDA(1) as a percentage of Segment Revenue	39.7		%	41.3		%

_______________________________________________________________________________

(1) See Note 7 to Notes to Consolidated Financial Statements included in this Quarterly Report for the definition of Adjusted EBITDA and a reconciliation of Adjusted EBITDA to income (loss) from continuing operations.

For the three months ended March 31, 2017, reported revenue in our North American Records and Information Management Business segment increased 14.1% compared to the three months ended March 31, 2016 due to the net impact of acquisitions/divestitures, internal revenue growth and favorable fluctuations in foreign currency exchange rates compared to the three months ended March 31, 2016. The net impact of acquisitions/divestitures contributed 12.1% to the reported revenue growth rate in our North American Records and Information Management Business segment for the three months ended March 31, 2017 compared to the comparable prior year period, primarily driven by our acquisition of Recall. The internal revenue growth in the three months ended March 31, 2017 compared to the three months ended March 31, 2016 was primarily the result of internal storage rental revenue growth of 1.9% primarily driven by net price increases and internal service revenue growth of 1.1% driven by growth in secure shredding revenues, in part due to higher recycled paper prices, as well as the stabilization in recent periods of the decline in retrieval/re-file activity and the related decrease in transportation revenues. Adjusted EBITDA as a percentage of segment revenue increased 160 basis points during the three months ended March 31, 2017 compared to the three months ended March 31, 2016, primarily driven by a decrease in wages and benefits as a percentage of segment revenue primarily associated with wages and benefits growing at a lower rate than revenue, partially attributable to the Transformation Initiative and synergies associated with our acquisition of Recall, as well as a decrease in bad debt expense.

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North American Data Management Business

	Three Months Ended March 31,								Percentage Change
							Dollar Change		Actual		Constant Currency		Internal Growth
	2016			2017
Storage Rental	$	65,348		$	73,312		$	7,964	12.2	%	11.9	%	2.7	%
Service	30,995			33,638			2,643		8.5	%	8.3	%	(6.7	)%
Segment Revenue	$	96,343		$	106,950		$	10,607	11.0	%	10.8	%	(0.3	)%
Segment Adjusted EBITDA(1)	$	53,460		$	55,912		$	2,452
Segment Adjusted EBITDA(1) as a percentage of Segment Revenue	55.5		%	52.3		%

_______________________________________________________________________________

(1) See Note 7 to Notes to Consolidated Financial Statements included in this Quarterly Report for the definition of Adjusted EBITDA and a reconciliation of Adjusted EBITDA to income (loss) from continuing operations.

For the three months ended March 31, 2017, reported revenue in our North American Data Management Business segment increased 11.0% compared to the three months ended March 31, 2016 primarily due to the net impact of acquisitions/divestitures. The net impact of acquisitions/divestitures contributed 11.1% to the reported revenue growth rates in our North American Data Management Business segment for the three months ended March 31, 2017 compared to the comparable prior year period, primarily driven by our acquisition of Recall. The negative internal revenue growth for the three months ended March 31, 2017 was primarily attributable to negative internal service revenue growth of 6.7% for the three months ended March 31, 2017 which was due to continued declines in service revenue activity levels as the business becomes more archival in nature, partially offset by internal storage rental revenue growth of 2.7% in the three months ended March 31, 2017, primarily attributable to volume increases. Adjusted EBITDA as a percentage of segment revenue decreased 320 basis points during the three months ended March 31, 2017 compared to the three months ended March 31, 2016, primarily driven by an increase in selling, general and administrative expenses, partially attributable to investments associated with product management and development.

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Western European Business

	Three Months Ended March 31,								Percentage Change
							Dollar Change		Actual		Constant Currency		Internal Growth
	2016			2017
Storage Rental	$	57,819		$	71,567		$	13,748	23.8	%	37.2	%	1.7	%
Service	36,057			48,505			12,448		34.5	%	48.0	%	4.4	%
Segment Revenue	$	93,876		$	120,072		$	26,196	27.9	%	41.3	%	2.7	%
Segment Adjusted EBITDA(1)	$	31,946		$	34,142		$	2,196
Segment Adjusted EBITDA(1) as a percentage of Segment Revenue	34.0		%	28.4		%

_______________________________________________________________________________

(1) See Note 7 to Notes to Consolidated Financial Statements included in this Quarterly Report for the definition of Adjusted EBITDA and a reconciliation of Adjusted EBITDA to income (loss) from continuing operations.

For the three months ended March 31, 2017, reported revenue in our Western European Business segment increased 27.9% compared to the three months ended March 31, 2016. In the three months ended March 31, 2017, the net impact of acquisitions/divestitures and internal revenue growth was partially offset by unfavorable fluctuations in foreign currency exchange rates compared to the three months ended March 31, 2016. The net impact of acquisitions/divestitures contributed 38.6% to the reported revenue growth rates in our Western European Business segment for the three months ended March 31, 2017 compared to the comparable prior year period, primarily driven by our acquisition of Recall. Internal revenue growth for the three months ended March 31, 2017 was 2.7%, primarily attributable to internal service revenue growth of 4.4% for the three months ended March 31, 2017, which was primarily associated with increased special project activity. For the three months ended March 31, 2017, foreign currency exchange rate fluctuations decreased our reported revenues for the Western European Business segment by 13.4% compared to the comparable prior year period due to the weakening of the British pound sterling and Euro against the United States dollar. Adjusted EBITDA as a percentage of segment revenue decreased 560 basis points during the three months ended March 31, 2017 compared to the three months ended March 31, 2016, primarily driven by an increase in cost of sales as a percentage of segment revenue, primarily associated with increased wages and benefits, rent expense and property taxes, partially offset by a decrease in selling, general and administrative expenses as a percentage of segment revenue, primarily associated with wages and benefits growing at a lower rate than revenue, partially attributable to the Transformation Initiative and synergies associated with our acquisition of Recall.

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Other International Business

	Three Months Ended March 31,								Percentage Change
							Dollar Change		Actual		Constant Currency		Internal Growth
	2016			2017
Storage Rental	$	60,416		$	117,615		$	57,199	94.7	%	86.0	%	8.3	%
Service	40,925			71,626			30,701		75.0	%	65.8	%	2.8	%
Segment Revenue	$	101,341		$	189,241		$	87,900	86.7	%	77.8	%	6.1	%
Segment Adjusted EBITDA(1)	$	21,576		$	55,347		$	33,771
Segment Adjusted EBITDA(1) as a percentage of Segment Revenue	21.3		%	29.2		%

_____________________________________________________________________________

(1) See Note 7 to Notes to Consolidated Financial Statements included in this Quarterly Report for the definition of Adjusted EBITDA and a reconciliation of Adjusted EBITDA to income (loss) from continuing operations.

For the three months ended March 31, 2017, reported revenue in our Other International Business segment increased 86.7% compared to the three months ended March 31, 2016 due to the net impact of acquisitions/divestitures, internal revenue growth and favorable fluctuations in foreign currency exchange rates compared to the three months ended March 31, 2016. The net impact of acquisitions/divestitures contributed 71.7% to the reported revenue growth rates in our Other International Business segment for the three months ended March 31, 2017 compared to the comparable prior year period, primarily driven by our acquisition of Recall. Internal revenue growth for the three months ended March 31, 2017 was 6.1%, supported by 8.3% internal storage rental revenue growth primarily due to volume increases. Foreign currency fluctuations in the three months ended March 31, 2017 resulted in increased revenue, as measured in United States dollars, of approximately 8.9% as compared to the comparable prior year period, primarily due to the strengthening of the Australian dollar and Brazilian real against the United States dollar. Adjusted EBITDA as a percentage of segment revenue increased 790 basis points during the three months ended March 31, 2017 compared to the three months ended March 31, 2016, primarily as a result of a higher margin business in Australia as a result of the Recall acquisition and to a lesser extent, synergies associated with our acquisition of Recall, as well as lower professional fees.

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Corporate and Other Business

	Three Months Ended March 31,									Percentage Change
							Dollar Change			Actual		Constant Currency		Internal Growth
	2016			2017
Storage Rental	$	10,405		$	11,602		$	1,197		11.5	%	11.5	%	9.0	%
Service	4,044			3,414			(630		)	(15.6	)%	(15.6	)%	(18.3	)%
Segment Revenue	$	14,449		$	15,016		$	567		3.9	%	3.9	%	1.4	%
Segment Adjusted EBITDA(1)	$	(48,393	)	$	(62,357	)	$	(13,964	)
Segment Adjusted EBITDA(1) as a percentage of Consolidated Revenue	(6.4		)%	(6.6		)%

_______________________________________________________________________________

(1) See Note 7 to Notes to Consolidated Financial Statements included in this Quarterly Report for the definition of Adjusted EBITDA and a reconciliation of Adjusted EBITDA to income (loss) from continuing operations.

During the three months ended March 31, 2017, Adjusted EBITDA in the Corporate and Other Business segment as a percentage of consolidated revenues decreased 20 basis points compared to the three months ended March 31, 2016. Adjusted EBITDA in the Corporate and Other Business segment decreased $14.0 million in the three months ended March 31, 2017 compared to the three months ended March 31, 2016, primarily driven by an increase in information technology expenses associated with our acquisition of Recall and increased professional fees associated with our innovation investments.

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Liquidity and Capital Resources

The following is a summary of our cash balances and cash flows (in thousands) as of and for the three months ended March 31,

	2016			2017
Cash flows from operating activities - continuing operations	$	81,118		$	122,174
Cash flows from investing activities - continuing operations	(107,281		)	(104,303		)
Cash flows from financing activities - continuing operations	19,261			36,662
Cash and cash equivalents at the end of period	117,945			295,628

Net cash provided by operating activities from continuing operations was $122.2 million for the three months ended March 31, 2017 compared to $81.1 million for the three months ended March 31, 2016. The $41.1 million period over period increase in cash flows from operating activities resulted from an increase in net income (including non-cash charges and realized foreign exchange losses) of $43.7 million, offset by an increase in cash used in working capital of $2.6 million, primarily related to the timing of prepaid expenses.

Our business requires capital expenditures to maintain our ongoing operations, support our expected revenue growth and new products and services, and increase our profitability. These expenditures are included in the cash flows from investing activities. The nature of our capital expenditures has evolved over time along with the nature of our business. Our capital goes to support business-line growth and our ongoing operations, but we also expend capital to support the development and improvement of products and services and projects designed to increase our profitability. These expenditures are generally discretionary in nature. Cash paid for our capital expenditures, acquisition of customer relationships and customer inducements during the three months ended March 31, 2017 amounted to $73.2 million, $17.1 million and $4.3 million, respectively. For the three months ended March 31, 2017, these expenditures were primarily funded with cash flows from operations, as well as through borrowings under our Revolving Credit Facility. Excluding capital expenditures associated with potential future acquisitions, opportunistic real estate investments and capital expenditures associated with the integration of Recall, we expect our capital expenditures to be approximately $320.0 million to $370.0 million in the year ending December 31, 2017.

Net cash provided by financing activities from continuing operations was $36.7 million for the three months ended March 31, 2017, consisting primarily of net proceeds of $32.4 million primarily associated with net borrowings under the Revolving Credit Facility.

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Capital Expenditures

Below are descriptions of the major types of investments and other capital expenditures that we have made in recent years or that we are likely to consider in 2017. Beginning in the first quarter of 2017, we are separately identifying an additional capital expenditure category, Innovation and Growth Investment capital spend, which was previously included within the Non-Real Estate Investment capital spend category. We have reclassified the categorization of our prior year capital expenditures to conform with our current presentation.

Real Estate:

• Real estate assets that support core business growthprimarily related to investments in land, buildings, building improvements, leasehold improvements and racking structures that expand our revenue capacity in existing or new geographies, replace a long-term operational obligation or create operational efficiencies ("Real Estate Investment").

• Real estate assets necessary to maintain ongoing business operations primarily related to the repair or replacement of real estate assets such as buildings, building improvements, leasehold improvements and racking structures ("Real Estate Maintenance").

Non-Real Estate:

• Non-real estate assets that either (i) support the growth of our business, and/or increase our profitability, such as customer-inventory technology systems, and technology service storage and processing capacity, or (ii) are directly related to the development of core products or services in support of our integrated value proposition and enhance our leadership position in the industry, including items such as increased feature functionality, security upgrades or system enhancements ("Non-Real Estate Investment").

• Non-real estate assets necessary to maintain ongoing business operations primarily related to the repair or replacement of customer-facing assets such as containers and shred bins, warehouse equipment, fixtures, computer hardware, or third-party or internally-developed software assets. This category also includes operational support initiatives such as sales and marketing and information technology projects to support infrastructure requirements ("Non-Real Estate Maintenance").

Innovation and Growth Investment:

• Discretionary capital expenditures in significant new products and services in new, existing or adjacent business opportunities.

The following table presents our capital spend for the three months ended March 31, 2016 and 2017, respectively, organized by the type of the spending as described above:

	Three Months Ended March 31,
Nature of Capital Spend (in thousands)	2016		2017
Real Estate:
Investment	$	51,900	$	43,987
Maintenance	7,526		8,054
Total Real Estate Capital Spend	59,426		52,041
Non-Real Estate:
Investment	6,344		10,020
Maintenance	3,773		7,245
Total Non-Real Estate Capital Spend	10,117		17,265
Innovation and Growth Investment Capital Spend	1,341		4,382
Total Capital Spend (on accrual basis)	70,884		73,688
Net increase in prepaid capital expenditures	327		478
Net decrease (increase) in accrued capital expenditures	9,641		(964		)
Total Capital Spend (on cash basis)	$	80,852	$	73,202

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Dividends

See Note 9 to Notes to Consolidated Financial Statements included in this Quarterly Report for a listing of dividends that were declared in fiscal year 2016 and the first three months of 2017. Our quarterly cash dividend for the first quarter of 2017 was paid on April 3, 2017, subsequent to the end of the first quarter, which significantly impacted our financing cash flows from continuing operations for the three months ended March 31, 2017 compared to the three months ended March 31, 2016.

Financial Instruments and Debt

See Note 2.f. to Notes to Consolidated Financial Statements included in this Quarterly Report for information on our financial instruments, including concentrations of credit risk.

Our consolidated debt as of March 31, 2017 is as follows (in thousands):

	March 31, 2017
	Debt (inclusive of discount)			Unamortized Deferred Financing Costs			Carrying Amount
Revolving Credit Facility	$	988,327		$	(6,800	)	$	981,527
Term Loan	228,125			—			228,125
Australian Dollar Term Loan	186,963			(3,832		)	183,131
6% Senior Notes due 2020	1,000,000			(11,881		)	988,119
43/8% Notes	500,000			(7,163		)	492,837
61/8% CAD Senior Notes due 2021	150,045			(1,561		)	148,484
61/8% GBP Senior Notes due 2022	499,508			(6,012		)	493,496
6% Senior Notes due 2023	600,000			(7,048		)	592,952
CAD Notes due 2023	187,557			(3,405		)	184,152
53/4% Senior Subordinated Notes due 2024	1,000,000			(10,186		)	989,814
53/8% Notes	250,000			(3,937		)	246,063
Real Estate Mortgages, Capital Leases and Other	518,191			(1,239		)	516,952
Accounts Receivable Securitization Program(1)	250,000			(308		)	249,692
Mortgage Securitization Program	50,000			(1,369		)	48,631
Total Long-term Debt	6,408,716			(64,741		)	6,343,975
Less Current Portion	(421,535		)	308			(421,227		)
Long-term Debt, Net of Current Portion	$	5,987,181		$	(64,433	)	$	5,922,748

______________________________________________________________

(1) Because the Accounts Receivable Securitization Program terminates on March 6, 2018, at which point all obligations under the program become due, this debt is classified within the current portion of long-term debt in our Consolidated Balance Sheet as of March 31, 2017.

See Note 4 to Notes to Consolidated Financial Statements included in our Annual Report and Note 5 to Notes to Consolidated Financial Statements included in this Quarterly Report for additional information regarding our long-term debt.

a. Credit Agreement

On July 2, 2015, we entered into a new credit agreement (the "Credit Agreement") to refinance our then existing credit agreement. The Credit Agreement terminates on July 6, 2019, at which point all obligations become due, but may be extended by one year at our option, subject to the conditions set forth in the Credit Agreement. The Credit Agreement consists of a revolving credit facility (the "Revolving Credit Facility") and a term loan (the "Term Loan"). The maximum amount permitted to be borrowed under the Revolving Credit Facility is $1,750.0 million. The original amount of the Term Loan was $250.0 million. We have the option to request additional commitments of up to $250.0 million, in the form of term loans or through increased commitments under the Revolving Credit Facility, subject to the conditions specified in the Credit Agreement.

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As of March 31, 2017, we had $988.3 million and $228.1 million of outstanding borrowings under the Revolving Credit Facility and the Term Loan, respectively, and $53.6 million of various letters of credit outstanding. The remaining amount available for borrowing under the Revolving Credit Facility as of March 31, 2017, which is based on IMI's leverage ratio, the last 12 months' earnings before interest, taxes, depreciation and amortization and rent expense ("EBITDAR"), other adjustments as defined in the Credit Agreement and current external debt, was $708.0 million (which amount represents the maximum availability as of such date). The average interest rate in effect under the Credit Agreement was 3.0% as of March 31, 2017. The average interest rate in effect under the Revolving Credit Facility was 3.0% and ranged from 2.3% to 5.0% as of March 31, 2017 and the interest rate in effect under the Term Loan as of March 31, 2017 was 3.2%.

The Credit Agreement, our indentures and other agreements governing our indebtedness contain certain restrictive financial and operating covenants, including covenants that restrict our ability to complete acquisitions, pay cash dividends, incur indebtedness, make investments, sell assets and take certain other corporate actions. The covenants do not contain a rating trigger. Therefore, a change in our debt rating would not trigger a default under the Credit Agreement, our indentures or other agreements governing our indebtedness. The Credit Agreement uses EBITDAR-based calculations as the primary measures of financial performance, including leverage and fixed charge coverage ratios.

b. Cash Pooling

Certain of our subsidiaries participate in cash pooling arrangements (the “Cash Pools”) with Bank Mendes Gans (“BMG”), an independently operated fully-owned subsidiary of ING Group, in order to help manage global liquidity requirements. Under the Cash Pools, cash deposited by participating subsidiaries with BMG is pledged as security against the drawings of other participating subsidiaries, and legal rights of offset are provided and, therefore, amounts are presented in our Consolidated Balance Sheets on a net basis. Each subsidiary receives interest on the cash balances held on deposit or pays interest on the amounts owed based on an applicable rate as defined in the Cash Pools. At December 31, 2016, we had a net cash position of approximately $1.7 million (which consisted of a gross cash position of approximately $69.5 million less outstanding borrowings of approximately $67.8 million by participating subsidiaries).

During the first quarter of 2017, we significantly expanded our utilization of the Cash Pools and reduced our utilization of our financing centers in Europe for purposes of meeting our global liquidity requirements. As of March 31, 2017, we utilize two separate cash pools with BMG, one of which we utilize to manage global liquidity requirements for our QRSs (the "QRS Cash Pool") and one pool for our TRSs (the "TRS Cash Pool"). As of March 31, 2017, we had a net cash position of approximately $5.4 million in the QRS Cash Pool (which consisted of a gross cash position of approximately $478.2 million less outstanding borrowings of approximately $472.8 million by participating subsidiaries) and we had a net cash position of approximately $11.1 million in the TRS Cash Pool (which consisted of a gross cash position of approximately $217.3 million less outstanding borrowings of approximately $206.2 million by participating subsidiaries). The net cash position balances as of December 31, 2016 and March 31, 2017, respectively, are reflected as cash and cash equivalents in the Consolidated Balance Sheets.

_______________________________________________________________________________

Our leverage and fixed charge coverage ratios under the Credit Agreement as of December 31, 2016 and March 31, 2017, respectively, and our leverage ratio under our indentures as of December 31, 2016 and March 31, 2017, respectively, are as follows:

	December 31, 2016	March 31, 2017	Maximum/Minimum Allowable
Net total lease adjusted leverage ratio	5.7	5.8	Maximum allowable of 6.5
Net secured debt lease adjusted leverage ratio	2.7	2.7	Maximum allowable of 4.0
Bond leverage ratio (not lease adjusted)	5.2	5.5	Maximum allowable of 6.5
Fixed charge coverage ratio	2.4	2.3	Minimum allowable of 1.5

As noted in the table above, our maximum allowable net total lease adjusted leverage ratio under the Credit Agreement is 6.5. The Credit Agreement also contains a provision which limits, in certain circumstances, our dividends in any four consecutive fiscal quarters to 95% of Funds From Operations (as defined in the Credit Agreement) for such four fiscal quarters or, if greater, the amount that we would be required to pay in order to continue to be qualified for taxation as a REIT or to avoid the imposition of income or excise taxes on IMI. This limitation only applies when our net total lease adjusted leverage ratio exceeds 6.0 as measured as of the end of the most recently completed fiscal quarter.

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Acquisitions

a. Acquisition of Recall

On May 2, 2016 (Sydney, Australia time), we completed the Recall Transaction. We currently estimate total acquisition and integration expenditures associated with the Recall Transaction to be approximately $380.0 million, the majority of which is expected to be incurred by the end of 2018. This amount consists of (i) Recall Costs and (ii) capital expenditures to integrate Recall with our existing operations.

The following table presents the operating and capital expenditures associated with the Recall Transaction incurred for the year ended December 31, 2016, the three months ended March 31, 2017 and the cumulative amount incurred through March 31, 2017 (in thousands):

	Year Ended December 31, 2016		Three Months Ended March 31, 2017		Cumulative Total
Recall Costs	$	131,944	$	20,571	$	199,529
Recall Capital Expenditures	18,391		6,255		24,711
Total	$	150,335	$	26,826	$	224,240

b. Santa Fe Transaction

In November 2016, we entered into a binding agreement to acquire the information management assets and operations of Santa Fe Group A/S ("Santa Fe") in ten regions within Europe and Asia in order to expand our presence in southeast Asia and western Europe. In December 2016, we acquired the information management assets and operations of Santa Fe in Hong Kong, Malaysia, Singapore, Spain and Taiwan (the “2016 Santa Fe Transaction”) for approximately 15.2 million Euros (approximately $16.0 million, based upon the exchange rate between the United States dollar and the Euro as of December 30, 2016, the closing date of the 2016 Santa Fe Transaction). Of the total purchase price, 13.5 million Euros (or approximately $14.2 million, based upon the exchange rate between the United States dollar and the Euro on the closing date of the 2016 Santa Fe Transaction) was paid during the year ended December 31, 2016, and the remaining balance is due on the 18-month anniversary of the closing of the 2016 Santa Fe Transaction. During the first quarter of 2017, we acquired the information management assets and operations of Santa Fe in Macau and South Korea (the "2017 Santa Fe Transaction") for approximately 0.9 million Euros (or approximately $1.0 million, based upon the exchange rate between the United States dollar and the Euro on the closing date of the 2017 Santa Fe Transaction). We expect to acquire Santa Fe's information management assets and operations in India, Indonesia and the Philippines by the end of the second quarter of 2017. However, the completion of these pending acquisitions is subject to closing conditions; accordingly, we can provide no assurance that these acquisitions will be completed or that the terms thereof will not change.

c. Other Acquisitions

In addition to the 2017 Santa Fe Transaction noted above, during 2017, in order to enhance our existing operations in the United States and Greece and to expand our operations into the United Arab Emirates, we completed the acquisition of three storage and records management companies and one art storage company for total consideration of approximately $13.7 million. The individual purchase prices of these acquisitions ranged from approximately $2.0 million to approximately $4.4 million.

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Contractual Obligations

We expect to meet our cash flow requirements for the next twelve months from cash generated from operations, existing cash, cash equivalents, borrowings under the Credit Agreement and other financings, which may include senior or senior subordinated notes, secured credit facilities, securitizations and mortgage or capital lease financings, and the issuance of equity. We expect to meet our long-term cash flow requirements using the same means described above. We are currently operating above our long-term targeted leverage ratio. As a REIT, we expect our long-term capital allocation strategy will naturally shift towards lower leverage, though our leverage has increased over the last several fiscal years to fund the costs of our REIT conversion and the Recall Transaction.

Inflation

Certain of our expenses, such as wages and benefits, insurance, occupancy costs and equipment repair and replacement, are subject to normal inflationary pressures. Although to date we have been able to offset inflationary cost increases with increased operating efficiencies, the negotiation of favorable long-term real estate leases and an ability to increase prices in our customer contracts (many of which contain provisions for inflationary price escalators), we can give no assurance that we will be able to offset any future inflationary cost increases through similar efficiencies, leases or increased storage rental or service charges.

Item 4. Controls and Procedures

Disclosure Controls and Procedures

The term "disclosure controls and procedures" is defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). These rules refer to the controls and other procedures of a company that are designed to ensure that information is recorded, processed, accumulated, summarized, communicated and reported to management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding what is required to be disclosed by a company in the reports that it files under the Exchange Act. As of March 31, 2017 (the "Evaluation Date"), we carried out an evaluation, under the supervision and with the participation of our management, including our chief executive officer and chief financial officer, of the effectiveness of our disclosure controls and procedures. Based upon that evaluation, our chief executive officer and chief financial officer concluded that, as of the Evaluation Date, our disclosure controls and procedures are effective.

Changes in Internal Control over Financial Reporting

Our management, with the participation of our principal executive officer and principal financial officer, is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) of the Exchange Act. Our internal control system is designed to provide reasonable assurance to our management and board of directors regarding the preparation and fair presentation of published financial statements.

There have been no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) under the Securities Act of 1934) during the quarter ended March 31, 2017 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Part II. Other Information

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

We did not sell any unregistered equity securities during the three months ended March 31, 2017, nor did we repurchase any shares of our common stock during the three months ended March 31, 2017.

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Item 6. Exhibits

(a)    Exhibits

Certain exhibits indicated below are incorporated by reference to documents we have filed with the SEC.

Exhibit No.	Description
10.1	Marc Duale Separation Agreement dated March 13, 2017.(Filed herewith.)
10.2	Ernest Cloutier Secondment Letter dated March 27, 2017.(Filed herewith.)
10.3	Advisory Agreement between Marc Duale and Iron Mountain Europe PLC dated April 12, 2017.(Filed herewith.)
12	Statement: re Computation of Ratios.(Filed herewith.)
31.1	Rule 13a-14(a) Certification of Chief Executive Officer.(Filed herewith.)
31.2	Rule 13a-14(a) Certification of Chief Financial Officer.(Filed herewith.)
32.1	Section 1350 Certification of Chief Executive Officer.(Furnished herewith.)
32.2	Section 1350 Certification of Chief Financial Officer.(Furnished herewith.)
101.1	The following materials from Iron Mountain Incorporated's Quarterly Report on Form 10-Q for the quarter ended March 31, 2017, formatted in XBRL (eXtensible Business Reporting Language): (i) the Consolidated Balance Sheets, (ii) Consolidated Statements of Operations, (iii) Consolidated Statements of Comprehensive Income (Loss), (iv) Consolidated Statements of Equity, (v) Consolidated Statements of Cash Flows and (vi) Notes to Consolidated Financial Statements, tagged as blocks of text and in detail. (Filed herewith.)

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

IRON MOUNTAIN INCORPORATED
By:	/s/ STUART B. BROWN
	Stuart B. Brown Executive Vice President and Chief Financial Officer (Principal Financial and Accounting Officer)

Dated: April 27, 2017

73

EX-10.1

Exhibit 10.1

TERMINATION OF THE EMPLOYMENT CONTRACT BY MUTUAL AGREEMENT

BETWEEN ON THE ONE HAND

The Company Iron Mountain BPM International, a private limited liability company (“société à responsabilité limitée”) incorporated and existing under the laws of the Grand Duchy of Luxembourg and registered with the Luxembourg Register of Commerce and Companies under the number B149.917

Having its registered office at 1A, rue Thomas Edison, L-1445 Luxembourg, Grand Duchy of Luxembourg;

Hereby represented by Anne Best and Manfred Schneider in their capacity of Managers (“gérants”) and authorized representatives of the Company;

Hereinafter referred to as the “Employer” or the “Company”;

AND ON THE OTHER HAND

Mr. Marc Duale

Hereinafter referred to as the “Employee”;

Both hereinafter referred to as the “Parties” and individually as the “Party”;

WHEREAS

- The Employee entered into the service of the Iron Mountain Group on 8 May 2006 as President of Iron Mountain Europe, pursuant to an employment contract concluded on 3 May 2006 with Iron Mountain UK Ltd;

- On 16 September 2008, the Employee was appointed as President of Iron Mountain International and on 15 June 2009, the Employee entered into an employment contract with Iron Mountain Belgium SA, replacing the employment contract signed on 3 May 2006 with Iron Mountain UK Ltd;

- The Employee was seconded to Hong Kong by Iron Mountain Belgium SA, under the conditions set forth in an employment agreement signed on 18 December 2009;

- On 31 December 2010, the employment agreement signed on 18 December 2009 between the Employee and Iron Mountain Belgium SA, was amended and transferred to the Company;

- On 29 September 2011, said employment agreement was amended and replaced by a new contract of employment (the “Employment Contract”) signed between the Company and the Employee, as amended by anaddendum to the Employment Contract dated 29 September 2011 and 11 February 2015;

1

- Following a certain reorganisation of the Iron Mountain Group, which took place in April 2015 (the “Reorganisation”), the Employee’s responsibilities were significantly reduced, giving him the right to elect termination of his Employment Contract, as amended, for Good Reason;

- On 8 June 2015, Iron Mountain announced that it entered into a Scheme Deed relating to the merger of Recall Inc. into Iron Mountain (the “Merger”);

- The Merger implied the need to integrate the business, operations and activities of Recall Inc. into Iron Mountain’s business, operations and activities (the “Integration”);

- Iron Mountain wished to benefit from the assistance of the Employee in connection with the Integration;

- At the request of Iron Mountain, the Employee accepted to assist in connection with the Integration for a limited period of time and the Parties concluded a third addendum to the Employment Contract (the “Third Amended and Restated Employment Contract”) on 24 February 2016. The Third Amended and Restated Employment Contract replaces all other written or oral commitments, undertakings and agreements between the Parties that preceded this and notably the Employment Contract;

- By this agreement (the “Agreement”), the Parties wish to terminate the Third Amended and Restated Employment Contract by mutual agreement effective on 31 March 2017, and simultaneously settle any claims resulting from their employment relationship and the termination of the Third Amended and Restated Employment Contract.

IT IS AGREED AS FOLLOWS

Article 1 – Termination Date

Pursuant to article L.124-13 of the Labour Code, the Parties hereby agree to terminate the Third Amended and Restated Employment Contract effective on 31 March 2017 (the “Termination Date”).

The Employer will disaffiliate the Employee from the Luxembourg social security scheme as from the Termination Date.

2

Article 2 – Legal and contractual entitlements

2.1. On or about the Termination Date, the Employer shall pay to the Employee together with his last monthly remuneration payment:

- A bonus amounting to EUR 507,328 gross, in compliance with article 13.2.1. (ii) of the Third Amended and Restated Employment Contract;

- A lump sum payment amounting to EUR 53,842 gross, as replacement of the Company’s coverage of the Employer cost of coverage for the Company's International Medical Insurance Plan in compliance with article 13.2.2(a) of the Third Amended and Restated Employment Contract;

- There are no accrued but untaken holidays and, as such, no payment is due;

- Any expenses, which have been incurred by the Employee until his last effective working day, in accordance with the Employer’s expense policies.

The bonus payment and the payment in lieu of untaken holidays will be paid after deduction of tax and social security contributions.

2.2. The Employee is eligible to outplacement services for a period of 9 months as of the Termination Date. The Company has engaged Stork & May to provide such services to the Employee.

2.3. As regards the Employee’s Target Performance Units, the awards below are eligible for vesting, but will be adjusted for actual performance at the end of the performance period. The Performance Units will not be paid until after the performance is known and certified in the first quarter of 2019.

Product Type Name	Grant Date	Vesting Date (estimated)	QTY Vesting (Target)
Operational PUs	19/02/2015	19/02/2018	4,828
TSR PUs	19/02/2015	19/02/2018	4,828

2.4. As regards theRSUs and Option, the awards below will be subject to accelerated vesting at or around the Termination Date. The Employee will have 3 years to exercise the options below.

Product Type Name	Grant Date	Original Vesting Date	QTY Vesting	Exercise Price
Restricted Units	19/02/2015	19/02/2018	1,936	N/A
Restricted Units	18/02/2016	18/02/2018	8,532	N/A
Stock Options	19/02/2015	19/02/2018	8,935	$38.83

3

Article 3 – Settlement Payment

In consideration for the waivers contained herein, the Employer shall pay to the Employee a lump-sum payment of EUR 517,830 gross in full settlement (hereafter the “Settlement Payment”).

According to article 115-9 of the Luxembourg Income Tax Law, the Settlement Payment benefits are, under certain conditions, exempt from tax up to 12 times the minimum social wage applicable on 1st January of the year in which the payment is paid (i.e. for 2017: EUR 23.983,08).The Employee undertakes to support any risk related to the non-exemption of the Settlement Payment.

It is noted that according to current administrative practice, the Settlement Payment is not subject to social contributions.The Employee undertakes to support any risk related to a change of the administrative practice i.e. to pay the employee part of social contributions in the event the administrative practice would change.

The Settlement Payment shall be paid together with his last monthly remuneration payment, after deduction of tax and social security contributions, as the case may be.

Article 4 – Confidentiality obligations

The Parties undertake to observe the strictest confidentiality as to the terms of this Agreement, and in particular as to the Settlement Payment as referred to in article 3, without prejudice to its submission, where necessary, to the relevant authorities or to its enforcement before a court of competent jurisdiction in the event that one of the contracting Parties does not comply with its provisions.

Article 5 – Restrictive covenants

The Employer waives the application of the non-competition provision as referred to in article 18 of the Third Amended and Restated Employment Contract. Nevertheless, in consideration for the Settlement Payment, the Employee agrees that for two years from his Termination Date, the Employee shall refrain from carrying out with or without consideration, occasionally or regularly, any business (either personally or by entering into service of another employer) which activity or services might be considered as competitive to the activity and services of the Employer.

This obligation:

1) is applicable to activities similar to those exercised by the Employee with the Employer; this includes amongst other activities of the following entities: Brambles Limited, Cintas Corporation, Dell Inc, Fujitsu, Hewlett Packard Company, International Business Machines, Canon, Oce Business Services, Oracle Crop, Pitney Bowes Inc, Xerox Corporation. This list is however not limitative;

2) relates to the following countries; Australia, Belgium, Brazil, Canada, Chile, China, France, Germany, Hong Kong, India, Luxemburg, Mexico, Netherlands, Russia, Spain, the United Kingdom and the United States.

4

Notwithstanding the termination of the Third Amended and Restated Employment Contract, the Employee shall continue to abide by the non-solicitation provision as referred to in article 19 of the Third Amended and Restated Employment Contract.

Article 6 – Non-Disparagement

The Parties undertake to remain neutral and loyal towards each other; they shall notably refrain from criticizing, blaming or disparaging each other in any circumstances whatsoever.

The Employee confirms that the provisions of article 20 (“Non-Disparagement”) of the Third Amended and Restated Employment Contract remain applicable beyond the Termination Date notwithstanding the signature of this Agreement.

Article 7 – Company’s property

The Employee confirms that he will hand over to the Employer, at the latest at the Termination Date, all Company property (such as but not limited to the Company badge access, laptop, blackberry, keys and papers, any documents, manuals, programs, customers lists or equipment provided to the Employee by the Company, any documents of a confidential nature and any documents received from the clients in connection with the Employee’s activity), without having transferred any copy of such documents.

The Employee further confirms that he will communicate to the Employer, at the latest at the Termination Date, all IT codes, passwords and access locks and will himself cease to use them at that time.

Article 8 – Waivers

Without prejudice to the execution of their respective obligations deriving from this Agreement, both Parties acknowledge that they are mutually discharged of all obligations resulting from the Third Amended and Restated Employment Contract and its termination and that they no longer have any right or claim whatsoever towards each other on the basis on their employment relationship and the termination of the Third Amended and Restated Employment Contract.

In particular, the Employee agrees to waive and release all claims against the Employer, including for purposes of this release, the Company and all parents, affiliates, subsidiaries, successors and assigns of the Company, as well as each past and present officers, directors, employees, shareholders, trustees, joint venturers, partners, and anyone claiming through them (collectively "Releasees”) whether known or unknown, which existed or may have existed, under any applicable laws, at any time up to the effective date of this Agreement, including claims related in any way to his employment with the Company or the ending of that relationship and without limitation to the generality of the foregoing, he expressly waives any right or claim that he has or may have for further notice period payment (indemnité compensatoire de préavis), further severance payment (indemnité de départ), additional compensation for legal holidays not taken by the Employee, further loyalty bonuses, any other bonus, 13th month payment, car allowance/additional leasing contributions, director's fees, elements of remuneration, premiums, overtime payment, reimbursement of representative fees or entertainment allowance or any other fees, luncheon vouchers, any remuneration for work on a Sunday or on a public or legal holiday, compensation payment for harassment at the workplace, insurance or additional complementary pension payments, interest contributions, option and share rights, advantages arising from annual retention bonus schemes, compensation payments for unfair dismissal (indemnité pour préjudice matériel, indemnité pour préjudice moral), additional lawyer's fees, etc., other than the payments received by the Employee in accordance with this Agreement.

5

This Agreement records the renunciation of the Parties to take advantage, now and in the future, of any right other than those foreseen in this Agreement, which exists or might exist on account of or on the occasion of the Third Amended and Restated Employment Contract or its termination.

This Agreement records furthermore renunciation to file any judicial claim in relation with the execution or the termination of the Third Amended and Restated Employment Contract.

This Agreement records the renunciation of the Parties to take advantage of any factual or legal error, and any omission relating to the existence or scope of their rights resulting from the Third Amended and Restated Employment Contract and its termination.

Article 9 – General acknowledgment

The Employee acknowledges and confirms that he has no other actual or implied, written or oral employment contract/relationship with any member of the Iron Mountain group, respectively that any such employment contract(s)/relationship(s) have been validly and lawfully terminated and that there are no (and that he waives, for in as much as necessary, any) outstanding rights whatsoever in relation to them.

Each Party declares to fully understand the sense and the impact of this Agreement and to give his/her consent without any restraint.

This Agreement is irrevocable and final. No reserves may be made by either Party with respect to its enforcement.

The Parties acknowledge that they have made reciprocal concessions in the meaning of article 2044 of the Luxembourg civil code.

Article 10 – Applicable law - Jurisdiction

The Parties expressly agree that the Agreement is governed by the laws of the Grand Duchy of Luxembourg and that any possible dispute arising out of the execution of the present Agreement shall be submitted to and settled exclusively by the courts of the Grand Duchy of Luxembourg.

6

Drawn up at Boston, MA, on March 13, 2017 in two original copies, each party declaring to have received one original.

/s/ Manfred Schneider	/s/ Marc Duale
The Employer	The Employee
Manfred Schneider, Manager	Marc Duale
/s/ Anne Best
The Employer
Anne Best, Manager

7

EX-10.2

Exhibit 10.2

March 27, 2017

Ernest W. Cloutier

PERSONAL & CONFIDENTIAL

DearErnie:

Congratulations on your new international assignment. This letter details the terms and conditions applicable to your international assignment based out of Zurich, Switzerland. Your start date in the role is April 1, 2017, and your projected relocation date is approximately July 1, 2017, subject to your receipt of a valid work permit, medical clearances (if applicable) and our receipt from you of a signed copy of this letter.

You will be considered a “seconded” employee from Iron Mountain in the United States (hereinafter “Home Company”) to Iron Mountain Management Services GmbH (“Mgmt Co”,

hereinafter “Host Company”) in Switzerland. You will work out of your home office in Zurich.

This letter does not create a contract of employment for the assignment period, but simply seeks to confirm the conditions which pertain to your international assignment.

Following are the specific details of your assignment:

Position:	Executive Vice President & GM, International
Effective Date:	April 1, 2017
You will report to:	William Meaney, President & CEO, Iron Mountain
Home Country:	United States
Host Country:	Switzerland

Length of Assignment

It is anticipated this assignment will last for a period of approximately three (3) years. Business conditions may require that this time be reduced or increased.

Compensation

Base Salary: For the duration of this assignment, salary administration will be based on your home country policies and practices as well as your performance. Your annual base salary will be $475,000. You will be paid through the US payroll system.

Incentive Compensation Plan: While on assignment your target annual incentive compensation opportunity will be 85%of your annual cash base salary earnings during the year. Bonuses are awarded based upon annual individual performance and business performance measured against established

objectives and they are typically paid in the first quarter following the end of each performance year. Your potential receipt of an annual bonus is subject to the discretion of the Home Company and the amount of any award made to you will depend on a number of factors in addition to your individual performance, including your employment by the Home Company at the time that such awards are made. Any annual bonus paid to you will be subject to hypothetical tax withholding. Please refer to Exhibit A – Tax Equalization Policy, for details regarding the hypothetical tax withholding.

Benefits

Medical Coverage: You will be eligible for coverage under the international medical benefit plan through CIGNA. Details of the plan will be provided under separate cover.

Vacation/Public Holidays: You will continue to participate in, and be eligible for, vacation days in accordance with the vacation policy of the Home Company. During your assignment, your vacation entitlement is at least four (4) weeks per year.

In addition to your vacation entitlement, you are granted public holidays according to the Host Country regulations and local practice.

Retirement Plan: – You will continue to participate in the Iron Mountain Companies 401(k) Plan.

Relocation Support

Iron Mountain partners with SIRVA Worldwide Relocation Services. Upon acceptance of the offer, a relocation consultant will be assigned to work with you to assist with your move from the United States to Switzerland. Outlined below are the key elements or relocation benefits.

Work Permits/Visas: The Home Company will coordinate with the Immigration Services Provider to assist in obtaining the proper visas/work permits for you, your spouse and your children To the extent that you and your spouse pay any visa, passport and/or immigration expenses personally for yourself, your spouse or your children, you will be reimbursed per the instructions provided to you.

Home Finding Trip/Realtor Assistance: The Home Company will cover a home finding trip for you and your spouse to Switzerland. The relocation company will continue to work with you to find local housing. The Home Company will cover costs for the agent/broker and any necessary rental deposits.

Transportation to the Host Country: You and your family will be reimbursed actual reasonable travel expenses for relocation to and from the assignment location. Class of air travel for you and your family will be business class.

Shipment of Household Goods: The relocation company will coordinate the moving of your household goods and personal belongings to your new international location. It is recommended that you generally limit the amount of belongings to a 40-foot container. An air shipment will also be provided subject to weight limitations. The relocation company will provide the recommended weight parameters to you. After the moving company has completed an assessment we will discuss any changes required to the limits.

Storage of Goods: The Home Company will provide for storage of personal affects in the Home Country if required.

Property Management: The Home Company will reimburse property management fees up to $5000 each year, for your home in the United States, if applicable.

Cultural/Language Training: Iron Mountain will coordinate and pay for cultural and language training services for you and your family.

Assignment Allowances

These allowances are paid only for the period of your international assignment and will not be considered for bonus, long term compensation and/or benefit calculation purposes. These allowances will take effect when you move into temporary or permanent housing at your assignment locationon/about July 1, 2017, unless otherwise notated below.. For the period from April 1, 2017- July 1, 2017 (or your move date) the company will cover travel and living expenses to Switzerland per the Home Company’ standard travel policy.

The allowances will cease at the end of your assignment. Please note that home and host income taxes due in relation to these allowances will be paid by the Home Company (any differing tax treatment is noted).

Cost of Living Allowance: You will receive a cost of living allowance (COLA) in the amount of $7200.00 per month. The COLA will be paid to help insulate you for the higher cost of goods and services in the Host Country as well as cover any food expenses while on assignment. The allowance will be paid on a biweekly basis through payroll. It will coincide with the start of your assignment and will cease at the conclusion of your assignment.

Housing &Utility Allowance: Iron Mountain will cover up to$12,800 per month for your housing and utilities costs, while on assignment. Payments will be made directly to the landlord on your behalf (if allowed by the landlord). The exact monthly housing allowance, will be finalized after you secure housing in Switzerland.

Home Furnishings: If the housing is not a furnished property, the Home Company will cover purchasing furniture locally or expenses associated with the rental of furniture for the term of the assignment. The amount of the allowance is estimated to be $20,000-$30,000 per year, however, it will be finalized once local housing is secured. The home furnishings allowance will be available as soon as local housing is secured in the Host Country.

Rental Deposit: Iron Mountain will cover rental deposits and brokerage fees to secure your housing.

Education & Childcare Assistance: The Home Company will cover up to $152,000 in total for your four children annually for education and childcare services.

Car Allowance: The Home Company will provide an allowance of $20,000 per year for car lease and insurances.

Home Leave: To maintain ties to your Home Country while on assignment, the Home Company will provide for reimbursement of up to 18 individual business class trips (3 per year for you and your family) to be used to return to your home country or for your family to visit in the Host Country.

Tax Equalization

You will participate in the Home Company’s Tax Equalization Program during your international assignment. The Home Company has retained the services of PwC to prepare your Home and Host Country tax returns as required during the international assignment. Under tax equalization, you will be responsible for a hypothetical tax liability (e.g., national and state/local, provincial or cantonal, as applicable), which will be calculated and deducted from each pay check. The intent of the policy is that your ultimate tax liability will be similar to that which you would have paid in your Home Country had you not received assignment-related compensation or special tax considerations. Each year, a final tax

equalization calculation will be prepared to settle your assignment tax obligations. You will have a tax orientation meeting with our tax provider, PwC prior to the assignment to discuss these issues in further detail.

409A (US Filers only)

The tax ramifications of your international assignment require careful record keeping as well as timely submission of data. You are expected to comply with your responsibilities under the agreement to submit requested data timely so that any assignment related reimbursements and tax equalization payments are treated as 409A exceptions. These responsibilities include the timely submission of any reimbursement requests (within 60 days) and / or provide any personal information required for the tax equalization calculation on a timely basis (soon after the close of the year). Any 409A tax due as a result of your failure to provide information on a timely basis, will be your responsibility

Repatriation

The Home Company will relocate you and your family back to your Home Country or to another international assignment in the following circumstances:

• at the end of this assignment

• upon a Qualifying Termination under Iron Mountain’s Severance Program No. 1

• at your election in the event that (i) the individual to whom you report shall change or (ii) it is necessary that you or a family member permanently return to the Home Country for unforeseen or unexpected circumstances.

For clarity, should you voluntarily resign to accept employment with a company other the Iron Mountain or its affiliates, the Home Company shall not be responsible for costs associated with repatriation.

Where applicable, the Home Company will assume the costs for return transportation to your Home Country and return shipment of furniture, household goods or personal effects. Otherwise, prior to the successful conclusion of your assignment, you will be contacted to discuss future opportunities with the Home Company which may determine the exact location of your repatriation.

Termination

Termination of Tax Equalization

In the event your assignment concludes or is terminated for any reason, should you choose to remain in your host location, your tax equalization calculation will assume that you returned to your Home Country within thirty (30) days of separation and that the only income earned was Company income.

Qualifying Termination

In the event of a Qualifying Termination under Iron Mountain’s Severance Program No. 1, you will be repatriated and covered under such severance program. You will have the option of your children continuing, at their then current school, through the remainder of the current school semester, or applicable period, before you are relocated back to your Home Country.

Upon termination of your employment, you are expected to settle all outstanding accounts with the Home Company and other business and government services at your host location. Any unsettled accounts that are paid by the Home Company, on your behalf, will be deducted from your final pay.

Years of Service - Impact on Benefits

Your total years of service with companies affiliated with the Company shall be recognized for purposes of calculating retirement benefits. Severance payments mandated by law shall be based on years of service in the country of last employment (Home Country). In some locations, national law may construe

a voluntary termination or transfer to an affiliated company as a “termination”, or require that any severance payment to be made should be based on more years of service than those actually performed in the country of last employment (home country). As an expatriate employee, you are not eligible to receive such payments. If however, you do receive them, you will be required to repay the Company upon receipt. If repayment is not made within sixty (60) days, the amounts will be offset against other benefits to which you may be entitled.

Social Security Coverage

You will, subject to obtaining the relevant confirmation from the competent authorities, remain in the social security system of the Home Country. The Home Company will endeavour obtaining a respective certificate according to the relevant applicable legal provisions and international treaties on social security.

Code of Business Conduct and Ethics

You will need to be familiar with and adhere to the Home Company policies and applicable Home and Host Country work laws. It is imperative that you and your family members follow both the letter and the spirit of the law, not only to protect yourselves from criminal or civil penalties, but also to maintain and advance the Home and Host Company’s image as a reputable corporate citizen in the countries in which the Home Company operates. You will be expected to operate in compliance with the Home Company’sCode of Business Conduct and Ethics at all times.

Data Protection Act

To manage your assignment effectively we may need to process personal data relating to you for the purpose of personnel and employment administration. This may include the transfer of data to, and processing by, other offices. Examples could include providing the Host Country office with your bank account details, or an emergency contact number for a relative in your home country.

By signing this assignment letter, you consent under the Data Protection Act, to the processing of this personal data. This is likely to include the provision that, from time to time, such data be transferred to the other offices, including those based in countries outside of the EU. Data will only be released to authorized individuals for administrative purposes only.

Governing Law

This letter, your global assignment and your employment relationship generally are subject to and governed by the laws of the Commonwealth of Massachusetts. This letter shall not be amended or supplemented unless in writing signed by you and a duly authorized representative of your Host Country. The court of competent jurisdiction in the Home Country shall have the exclusive jurisdiction for any dispute arising out or in connection with the assignment letter, unless any obligatory provision of law confers exclusive jurisdiction of any other country.

Best wishes to you in your new assignment.

Sincerely,

/s/ Deirdre Evens

Deirdre Evens

Executive Vice President, Chief People Officer

cc: PwC

Ann Gleason

Please indicate your agreement by signing below and returning this letter to Ann Gleason at your earliest convenience.

I have reviewed the general terms and conditions of my international assignment outlined above and by signing below, accept these conditions.

/s/ Ernest W. Cloutier	March 27, 2017
Ernest W. Cloutier	Date

EX-10.3

Exhibit 10.3

DATED APRIL 12, 2017

ADVISORY AGREEMENT

between

IRON MOUNTAIN EUROPE PLC

and

MR MARC DUALE

EXECUTION VERSION

CONTENTS

CLAUSE

1.	INTERPRETATION	1
2.	TERM OF ENGAGEMENT	3
3.	DUTIES AND OBLIGATIONS	3
4.	FEES	5
5.	EXPENSES	5
6.	OTHER ACTIVITIES	6
7.	CONFIDENTIAL INFORMATION AND CLIENT PROPERTY	6
8.	DATA PROTECTION	6
9.	INTELLECTUAL PROPERTY	7
10.	LIABILITY	7
11.	TERMINATION	7
12.	OBLIGATIONS ON TERMINATION	8
13.	STATUS	8
14.	NOTICES	9
15.	ENTIRE AGREEMENT	9
16.	VARIATION	9
17.	COUNTERPARTS	9
18.	THIRD PARTY RIGHTS	10
19.	FORCE MAJEURE	10
20.	GOVERNING LAW AND JURISDICTION	10

SCHEDULE

SCHEDULE The Services 12

EXECUTION VERSION

THIS AGREEMENT is dated April 12, 2017

PARTIES

(1) IRON MOUNTAIN EUROPE PLC, incorporated and registered in England and Wales with company number 02321917 whose registered office is at Cottons Centre 3^rd Floor, Tooley Street, London SE1 2TT (the “Client”).

(2) MR MARC DUALE (the “Advisor”).

AGREED TERMS

1. INTERPRETATION

1.1 The definitions and rules of interpretation in this clause apply in this agreement (unless the context requires otherwise).

Business of the Client: a global business dedicated to storing, protecting and managing information and assets.

Business Opportunities: any opportunities which the Advisor becomes aware of during the Engagement which relate to the Business of the Client or any Group Company or which the Client Representative reasonably considers might be of benefit to the Client or any Group Company.

Capacity: as agent, consultant, advisor, director, employee, owner, partner, shareholder or in any other capacity.

Client Property: all documents, books, manuals, materials, records, correspondence, papers and information (on whatever media and wherever located) relating to the Business or affairs of the Client or Group Company or its or their customers and business contacts, and any equipment, keys, hardware or software provided for the Advisor's use by the Client during the Engagement, and any data or documents (including copies) produced, maintained or stored by the Advisor on the computer systems or other electronic equipment of the Client or the Advisor during the Engagement.

Client Representative: Bill Meaney, President and CEO.

Commencement Date: 1 May 2017.

Confidential Information: information in whatever form (including, without limitation, in written, oral, visual or electronic form or on any magnetic or optical disk or memory and wherever located) relating to the business, customers, clients, products, affairs and finances of the Client or any Group Company for the time being confidential to the Client or any Group Company and trade secrets including, without limitation, technical data and know-how relating to the Business of the Client or any Group Company or any of its or their suppliers, customers, clients, agents,

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EXECUTION VERSION

distributors, shareholders, management or business contacts, including (but not limited to) information that the Advisor creates, develops, receives or obtains in connection with this Engagement, whether or not such information (if in anything other than oral form) is marked confidential.

Engagement: the engagement of the Advisor by the Client on the terms of this agreement.

Group Company: the Client, its Subsidiaries or Holding Companies from time to time and any Subsidiary of any Holding Company from time to time.

Intellectual Property Rights: patents, rights to Inventions, copyright and related rights, trademarks, trade names and domain names, rights in get-up, rights in goodwill or to sue for passing off, unfair competition rights, rights in designs, rights in computer software, database rights, topography rights, rights in confidential information (including know-how and trade secrets) and any other intellectual property rights, in each case whether registered or unregistered and including all applications (or rights to apply) for, and renewals or extensions of, such rights and all similar or equivalent rights or forms of protection which may now or in the future subsist in any part of the world.

Invention: any invention, idea, discovery, development, improvement or innovation made by the Advisor in connection with the provision of the Services, whether or not patentable or capable of registration, and whether or not recorded in any medium.

Pre-Contractual Statement: any undertaking, promise, assurance, statement, representation, warranty or understanding (whether in writing or not) of any person (whether party to this agreement or not) relating to the Engagement other than as expressly set out in this agreement or any documents referred to in it.

Services: the services described in the Schedule to this agreement.

Subsidiary and Holding Company: mean "subsidiary" and "holding company" as defined in section 1159 of the Companies Act 2006 and a company shall be treated, for the purposes only of the membership requirement contained in subsections 1159(1)(b) and (c), as a member of another company even if its shares in that other company are registered in the name of (a) another person (or its nominee), whether by way of security or in connection with the taking of security, or (b) a nominee.

Termination Date: the date of termination of this agreement, howsoever arising.

Works: all records, reports, documents, papers, drawings, designs, transparencies, photos, graphics, logos, typographical arrangements, software programs, inventions, ideas, discoveries, developments, improvements or innovations and all materials embodying them in whatever form, including but not limited to hard copy and electronic form, prepared by the Advisor in connection with the provision of the Services.

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EXECUTION VERSION

1.2 The headings in this agreement are inserted for convenience only and shall not affect its construction.

1.3 A reference to a particular law is a reference to it as it is in force for the time being taking account of any amendment, extension or re-enactment and includes any subordinate legislation for the time being in force made under it.

1.4 Unless the context otherwise requires, a reference to one gender shall include a reference to the other genders.

1.5 Unless the context otherwise requires, words in the singular include the plural and in the plural include the singular.

1.6 The Schedule to this agreement forms part of (and is incorporated into) this agreement.

2. TERM OF ENGAGEMENT

2.1 The Client shall engage the Advisor to provide the Services on the terms of this agreement.

2.2 The Engagement shall commence on the Commencement Date and shall continue, subject to the remaining terms of this agreement, until twelve months from the date hereof with the parties having the option to mutually agree to extend such term upon the satisfactory completion of the Services, unless terminated earlier:

(a) as provided for by the terms of this agreement; or

(b) by either party giving to the other not less than two weeks’ written notice.

3. DUTIES AND OBLIGATIONS

3.1 During the Engagement the Advisor shall:

(a) provide the Services in accordance with the terms specified in the Schedule to this agreement;

(b) provide the Services with all due care, skill and ability and use his reasonable endeavours to promote the interests of the Client and any Group Company;

(c) devote up to 33 (thirty-three) days in each calendar quarter to the carrying out of the Services, together with such additional time (if any) as may be necessary for their proper performance; and

(d) promptly give to the Client Representative all such information and reports as it may reasonably require in connection with matters relating to the provision of the Services or the Business of the Client or any Group Company.

3.2 If the Advisor is unable to provide the Services due to illness or injury, he shall advise the Client Representative of that fact as soon as reasonably practicable. For the avoidance of doubt, no fee

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EXECUTION VERSION

shall be payable in accordance with clause 4 in respect of any period during which the Services are not provided.

3.3 Unless he has been specifically authorised to do so by the Client Representative in writing:

(a) the Advisor shall not have any authority to incur any expenditure in the name of or for the account of the Client; and

(b) the Advisor shall not hold himself out as an employee, officer or agent of the Client and/or as having authority to bind the Client.

3.4 The Advisor shall comply with all reasonable standards of safety and comply with the Client's health and safety procedures from time to time in force at the premises where the Services are provided.

3.5 The Advisor shall comply with the following Client policies: Code of Ethics and Business Conduct, Insider Trading Policy, and Anti-corruption and Anti-bribery Policy.

3.6 The Advisor undertakes to the Client that, during the Engagement, he shall take all reasonable steps to offer (or cause to be offered) to the Client any Business Opportunities as soon as practicable after the same shall have come to his knowledge and in any event before the same shall have been offered by the Advisor (or caused by the Advisor to be offered) to any other party, provided that nothing in this clause shall require the Advisor to disclose any Business Opportunities to the Client if to do so would result in a breach by the Advisor of any obligation of confidentiality or of any fiduciary duty owed by it or him to any third party.

3.7 The Advisor shall comply with all applicable laws, regulations, codes and sanctions relating to anti-bribery and anti-corruption in connection with the provision of the Services, including but not limited to the Bribery Act 2010.

3.8 For the avoidance of doubt, the Client will not provide the Advisor with any equipment in connection with the provision of the Services unless agreed otherwise.

4. FEES

4.1 The Client shall pay the Advisor a fee of £107,000 per quarter, such amount being exclusive of VAT.

4.2 On the last working day of each quarter during the Engagement, the Advisor shall submit to the Client Representative for approval an invoice for the amount of the fee payable (plus VAT, if applicable) for the Services during that quarter.

4.3 In consideration of the provision of the Services, the Client shall pay each invoice submitted by the Advisor in accordance with clause 4.2 within 5 business days of the Client Representative’s review and approval, such review not to be unreasonably delayed.

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EXECUTION VERSION

4.4 The Client shall be entitled to deduct from the fees (and any other sums) due to the Advisor any sums that the Advisor may owe to the Client or any Group Company at any time.

5. EXPENSES

5.1 The Client shall not reimburse any expenses incurred by the Advisor in the course of the Engagement, other than with the prior approval of the Client Representative and subject to production of receipts or other appropriate evidence of payment.

5.2 If the Advisor is required to travel abroad in the course of the Engagement, he shall be responsible for any necessary insurances, inoculations and immigration requirements.

6. OTHER ACTIVITIES

Nothing in this agreement shall prevent the Advisor from being engaged, concerned or having any financial interest in any Capacity in any other business, trade, profession or occupation during the Engagement, provided that:

a) such activity does not cause a breach of any of the Advisor's obligations under this agreement; and

b) the Advisor shall not engage in any such activity if it relates to a business which is similar to or in any way competitive with the Business of the Client or any Group Company without the prior written consent of the Client Representative.

7. CONFIDENTIAL INFORMATION AND CLIENT PROPERTY

7.1 The Advisor acknowledges that, in the course of the Engagement, he will have access to Confidential Information. The Advisor has therefore agreed to accept the restrictions in this clause 7.

7.2 The Advisor shall not (except in the proper course of his duties), either during the Engagement or at any time after the Termination Date, use or disclose to any third party (and shall use his best endeavours to prevent the publication and disclosure of) any Confidential Information. This restriction does not apply to:

(a) any use or disclosure authorised by the Client or required by law; or

(b) any information which is already in, or comes into, the public domain otherwise than through Advisor's unauthorised disclosure.

7.3 At any stage during the Engagement, the Advisor will on request as soon as is reasonably practicable return to the Client all and any Client Property in his possession.

8. DATA PROTECTION

8.1 The Advisor consents to the Client holding and processing data relating to him for legal, personnel, administrative and management purposes and, in particular, to the processing of any

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EXECUTION VERSION

"sensitive personal data" (as defined in the Data Protection Act 1998) relating to him including, as appropriate:

(a) information about his physical or mental health or condition in order to monitor sickness absence;

(b) his racial or ethnic origin or religious or similar beliefs in order to monitor compliance with equal opportunities legislation; and

(c) information relating to any criminal proceedings in which he has been involved for insurance purposes and in order to comply with legal requirements and obligations to third parties.

8.2 The Advisor consents to the Client making such information available to any Group Company, those who provide products or services to the Client and any Group Company such as advisers, regulatory authorities, governmental or quasi-governmental organisations and potential purchasers of the Client or the Group or any part of its business.

8.3 The Advisor consents to the transfer of such information to the Client's and any Group Company's business contacts outside the European Economic Area in order to further their business interests.

8.4 The Advisor shall comply with the Client's data protection policy and relevant obligations under the Data Protection Act 1998 and associated codes of practice when processing personal data relating to any employee, worker, customer, client, supplier or agent of the Client.

9. INTELLECTUAL PROPERTY

9.1 The Advisor warrants to the Client that he will comply with the Client’s policies and procedures in respect of intellectual property.

10. LIABILITY

10.1 The Advisor shall have liability for, and shall indemnify the Client and any Group Company for any direct loss, liability, costs (including reasonable legal costs), damages or expenses, but excluding indirect or consequential losses, loss of profit and loss of reputation arising from any breach by the Advisor of the terms of this agreement, including any negligent or reckless act, omission or default in the provision of the Services.

10.2 The Advisor’s maximum liability under the indemnity in clause 10.1 shall be limited to a total of £100,000 in respect of all acts and/or omissions occurring within the term of the Engagement other than resulting from fraud, wilful breach or gross negligence by the Advisor.

11. TERMINATION

11.1 Notwithstanding the provisions of clause 2.2, the Client may terminate the Engagement with immediate effect without notice and without any liability to make any further payment to the

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EXECUTION VERSION

Advisor (other than in respect of amounts accrued before the Termination Date) if, at any time, the Advisor:

(a) commits any serious or repeated breach or non-observance of any of the provisions of this agreement or refuses or neglects to comply with any reasonable and lawful directions of the Client in connection with the provision of the Services;

(b) is convicted of any criminal offence (other than an offence under any road traffic legislation in the United Kingdom or elsewhere for which a fine or non-custodial penalty is imposed);

(c) is declared bankrupt or makes any arrangement with or for the benefit of his creditors or has a county court administration order made against him under the County Court Act 1984;

(d) commits any fraud or dishonesty or acts in any manner which, in the opinion of the Client, brings or is likely to bring the Advisor or the Client or any Group Company into disrepute or is materially adverse to the interests of the Client or any Group Company;

(e) commits any breach of the Client's policies and procedures that have been notified to the Advisor as applying to him in connection with the provision of the Services; or

(f) commits any offence under the Bribery Act 2010.

11.2 The rights of the Client under clause 11.1 are without prejudice to any other rights that it might have at law to terminate the Engagement or to accept any breach of this agreement on the part of the Advisor as having brought the agreement to an end. Any delay by the Client in exercising its rights to terminate shall not constitute a waiver of these rights.

12. OBLIGATIONS ON TERMINATION

12.1    On the Termination Date the Advisor shall:

(a) deliver to the Client all Client Property which is in his possession or under his control; and

(b) to the extent possible, delete any information relating to the Business of the Client or any Group Company stored on any magnetic or optical disk or memory and all matter derived from such sources which is in his possession or under his control outside the premises of the Client.

12.2 The Client shall ensure that all monies due and payable to the Advisor in respect of the provision of the Services, together with any expenses incurred by the Advisor in accordance with clause 5, are paid in full within 10 days of the Termination Date.

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13. STATUS

13.1 The relationship of the Advisor to the Client will be that of independent contractor and nothing in this agreement shall render him an employee, worker, agent or partner of the Client and the Advisor shall not hold himself out as such.

13.2 This agreement constitutes a contract for the provision of services and not a contract of employment and, accordingly, the Advisor shall be fully responsible for any income tax, National Insurance and social security contributions and any other liability, deduction, contribution, assessment or claim arising from or made in connection with either the performance of the Services or any payment or benefit received by the Advisor in respect of the Services, where such recovery is not prohibited by law.

13.3 The Advisor shall further indemnify the Client against all reasonable costs, expenses and any penalty, fine or interest incurred or payable by the Client in connection with or in consequence of any such liability, deduction, contribution, assessment or claim.

14. NOTICES

14.1 Any notice given under this agreement shall be in writing and signed by or on behalf of the party giving it and shall be served by delivering it personally, or sending it by pre-paid recorded delivery or registered post to the relevant party at its registered office for the time being. Any such notice shall be deemed to have been received:

(a) if delivered personally, at the time of delivery; or

(b) in the case of pre-paid recorded delivery or registered post, 48 hours from the date of posting.

14.2 In proving such service, it shall be sufficient to prove that the envelope containing such notice was addressed to the address of the relevant party and delivered either to that address or into the custody of the postal authorities as a pre-paid recorded delivery or registered post.

15. ENTIRE AGREEMENT

Each party on behalf of itself and (in the case of the Client, as agent for any Group Companies) acknowledges and agrees with the other party (the Client acting on behalf of itself and as agent for each Group Company) that this agreement, together with any documents referred to in it, constitutes the entire agreement and understanding between the Advisor and the Client (and any Group Company) and supersedes any previous agreement between them relating to the Engagement (which agreement shall be deemed to have been terminated by mutual consent).

16. VARIATION

No variation of this agreement or of any of the documents referred to in it shall be valid unless it is in writing and signed by or on behalf of each of the parties.

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EXECUTION VERSION

17. COUNTERPARTS

This agreement may be executed in any number of counterparts, each of which when executed and delivered shall be an original, and all the counterparts together shall constitute one and the same instrument.

18. THIRD PARTY RIGHTS

18.1 Except as expressly provided elsewhere in this agreement, a person who is not a party to this agreement shall not have any rights under the Contracts (Rights of Third Parties) Act 1999 to enforce any term of this agreement but this does not affect any right or remedy of a third party which exists, or is available, apart from under that Act.

18.2 The rights of the parties to terminate, rescind or agree any variation, waiver or settlement under this agreement is not subject to the consent of any person that is not a party to this agreement.

19. FORCE MAJEURE

19.1 Neither party shall be deemed to be in breach of this agreement by reason of any delay in performing, or any failure to perform, any of their respective obligations in relation to this agreement, if the delay or failure was due to any cause beyond its reasonable control, including but not limited to acts of God, explosions, floods, fire or accident, war or threat of war, terrorism or threat of terrorism, sabotage, civil disturbance, prohibitions or measures of any kind on the part of any governmental, parliamentary or local authority, import or export regulations or embargoes, or industrial actions or trade disputes (whether involving employees of either party or of a third party).

20. GOVERNING LAW AND JURISDICTION

20.1 This agreement and any dispute or claim arising out of or in connection with it or its subject matter or formation (including non-contractual disputes or claims) shall be governed by and construed in accordance with the law of England and Wales.

20.2 The parties irrevocably agree that the courts of England and Wales shall have exclusive jurisdiction to settle any dispute or claim that arises out of or in connection with this agreement or its subject matter or formation (including non-contractual disputes or claims).

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EXECUTION VERSION

SIGNED by the parties on the date of this agreement:

April 12, 2017

Name: ......./s/ Charlotte Marshall......................................

For and on behalf of IRON MOUNTAIN EUROPE PLC

................/s/ Marc Duale....................................................

MR MARC DUALE

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EXECUTION VERSION

SCHEDULE – THE SERVICES

1. The Advisor shall provide the Services detailed in this Schedule.

2. The Services shall be provided to the Client at such times and from such locations as the Advisor shall determine in his reasonable discretion are appropriate.

3. The Advisor is not subject to the control of the Client in relation to the provision of the Services.

4. The Services shall comprise:

• Providing the CEO with strategic advice regarding the Client’s international operations;

• Providing such other strategic advice as agreed between the Client Representative and Advisor.

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EX-12

EXHIBIT 12

IRON MOUNTAIN INCORPORATED

STATEMENT OF THE CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES

(Dollars in thousands)

																	Three Months Ended
		Year Ended December 31,															March 31,
		2012			2013			2014			2015			2016			2016			2017
Earnings:
	Income from Continuing Operations before Provision (Benefit) for Income Taxes and Gain on Sale of Real Estate	$	296,805		$	159,871		$	223,373		$	162,066		$	146,644		$	74,941		$	68,064
	Add:
	Gain on Sale of Real Estate (1)	261			1,847			10,512			1,059			2,310			—			—
	Fixed Charges	326,261			335,637			345,781			344,606			417,774			88,149			116,077
		$	623,327		$	497,355		$	579,666		$	507,731		$	566,728		$	163,090		$	184,141
Fixed Charges:
	Interest Expense, Net	$	242,599		$	254,174		$	260,717		$	263,871		$	310,662		$	67,062		$	86,055
	Interest Portion of Rent Expense	83,662			81,463			85,064			80,735			107,112			21,087			30,022
		$	326,261		$	335,637		$	345,781		$	344,606		$	417,774		$	88,149		$	116,077
Ratio of Earnings to Fixed Charges		1.9		x	1.5		x	1.7		x	1.5		x	1.4		x	1.9		x	1.6		x
(1) Gain on sale of real estate reported above are pre-tax. The tax associated with the gain on the sale of real estate for the years ended December 31, 2012, 2013, 2014, 2015 and 2016 and for the three months ended March 31, 2016 and 2017 was $55, $430, $2,205, $209, $130, $0 and $0, respectively.

EX-31.1

EXHIBIT 31.1

CERTIFICATIONS

I, William L. Meaney, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Iron Mountain Incorporated; 

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; 

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report; 

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: 

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared; 

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles; 

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and 

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: April 27, 2017

/s/ WILLIAM L. MEANEY

William L. Meaney

President and Chief Executive Officer

EX-31.2

EXHIBIT 31.2 

CERTIFICATIONS

I, Stuart B. Brown, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Iron Mountain Incorporated;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; 

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: 

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared; 

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and 

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and 

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions): 

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: April 27, 2017

/s/ STUART B. BROWN

Stuart B. Brown

Executive Vice President and Chief Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. Section 1350, as adopted pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002 

In connection with the filing of the quarterly report on Form 10-Q for the quarter ended March 31, 2017 (the "Report") by Iron Mountain Incorporated (the "Company"), the undersigned, as the President and Chief Executive Officer of the Company, hereby certifies pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1.    the Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and

2.    the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: April 27, 2017

/s/ WILLIAM L. MEANEY

William L. Meaney

President and Chief Executive Officer

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. Section 1350, as adopted pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the filing of the quarterly report on Form 10-Q for the quarter ended March 31, 2017 (the "Report") by Iron Mountain Incorporated (the "Company"), the undersigned, as the Executive Vice President and Chief Financial Officer of the Company, hereby certifies pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1.    the Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and

2.    the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: April 27, 2017

/s/ STUART B. BROWN

Stuart B. Brown

Executive Vice President and Chief Financial Officer

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	Apr. 21, 2017
Document and Entity Information
Entity Registrant Name	IRON MOUNTAIN INC
Entity Central Index Key	0001020569
Document Type	10-Q
Document Period End Date	Mar. 31, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		264,116,522
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q1

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current Assets:
Cash and cash equivalents	$ 295,628	$ 236,484
Accounts receivable (less allowances of $44,290 and $40,690 as of December 31, 2016 and March 31, 2017, respectively)	721,030	691,249
Prepaid expenses and other	181,979	184,374
Total Current Assets	1,198,637	1,112,107
Property, Plant and Equipment:
Property, plant and equipment	5,662,272	5,535,783
Less—Accumulated depreciation	(2,550,532)	(2,452,457)
Property, Plant and Equipment, Net	3,111,740	3,083,326
Other Assets, Net:
Goodwill	3,957,058	3,905,021
Customer relationships and customer inducements	1,276,929	1,252,523
Other	127,770	133,823
Total Other Assets, Net	5,361,757	5,291,367
Total Assets	9,672,134	9,486,800
Current Liabilities:
Current portion of long-term debt	421,227	172,975
Accounts payable	239,894	222,197
Accrued expenses	533,647	450,257
Deferred revenue	223,701	201,128
Total Current Liabilities	1,418,469	1,046,557
Long-term Debt, net of current portion	5,922,748	6,078,206
Other Long-term Liabilities	86,583	99,540
Deferred Rent	121,938	119,834
Deferred Income Taxes	151,314	151,295
Commitments and Contingencies (see Note 8)
Redeemable Noncontrolling Interest	67,308	54,697
Iron Mountain Incorporated Stockholders' Equity:
Preferred stock (par value $0.01; authorized 10,000,000 shares; none issued and outstanding)	0	0
Common stock (par value $0.01; authorized 400,000,000 shares; issued and outstanding 263,682,670 shares and 264,110,388 shares as of December 31, 2016 and March 31, 2017, respectively)	2,641	2,636
Additional paid-in capital	3,491,936	3,489,795
(Distributions in excess of earnings) Earnings in excess of distributions	(1,430,613)	(1,343,311)
Accumulated other comprehensive items, net	(161,239)	(212,573)
Total Iron Mountain Incorporated Stockholders' Equity	1,902,725	1,936,547
Noncontrolling Interests	1,049	124
Total Equity	1,903,774	1,936,671
Total Liabilities and Equity	$ 9,672,134	$ 9,486,800

XML

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Accounts receivable, allowances (in dollars)	$ 40,690	$ 44,290
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized shares	10,000,000	10,000,000
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized shares	400,000,000	400,000,000
Common stock, issued shares	264,110,388	263,682,670
Common stock, outstanding shares	264,110,388	263,682,670

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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands						3 Months Ended
	Feb. 15, 2017	Oct. 31, 2016	Jul. 27, 2016	May 25, 2016	Feb. 17, 2016	Mar. 31, 2017	Mar. 31, 2016
Revenues:
Storage rental						$ 572,279	$ 461,211
Service						366,597	289,479
Total Revenues						938,876	750,690
Operating Expenses:
Cost of sales (excluding depreciation and amortization)						426,707	326,105
Selling, general and administrative						240,166	207,766
Depreciation and amortization						124,707	87,204
(Gain) Loss on disposal/write-down of property, plant and equipment (excluding real estate), net						(459)	(451)
Total Operating Expenses						791,121	620,624
Operating Income (Loss)						147,755	130,066
Interest Expense (Income), Net						86,055	67,062
Other (Income) Expense, Net						(6,364)	(11,937)
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes						68,064	74,941
Provision (Benefit) for Income Taxes						9,220	11,900
Income (Loss) from Continuing Operations						58,844	63,041
Income (loss) from discontinued operations, net of tax						(337)	0
Net income (loss)						58,507	63,041
Less: Net Income (Loss) Attributable to Noncontrolling Interests						382	267
Net Income (Loss) Attributable to Iron Mountain Incorporated						$ 58,125	$ 62,774
Earnings (Losses) per Share—Basic:
Income (Loss) from Continuing Operations						$ 0.22	$ 0.30
Total Income (Loss) from Discontinued Operations, Net of Tax, per Basic Share						0.00	0.00
Net Income (Loss) Attributable to Iron Mountain Incorporated						0.22	0.30
Earnings (Losses) per Share-Diluted:
Income (Loss) from Continuing Operations						0.22	0.30
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share						0.00	0.00
Net Income (Loss) Attributable to Iron Mountain Incorporated						$ 0.22	$ 0.30
Weighted Average Common Shares Outstanding-Basic (in shares)						263,855,000	211,526,000
Weighted Average Common Shares Outstanding-Diluted (in shares)						264,809,666	212,471,441
Dividends Declared per Common Share (in dollars per share)	$ 0.55	$ 0.55	$ 0.485	$ 0.4850	$ 0.4850	$ 0.5504	$ 0.4853

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CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Interest Income	$ 2,293	$ 1,287

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 58,507	$ 63,041
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	50,784	23,978
Market Value Adjustments for Securities	0	(734)
Total Other Comprehensive Income (Loss)	50,784	23,244
Comprehensive Income (Loss)	109,291	86,285
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	(168)	754
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$ 109,459	$ 85,531

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CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Earnings in Excess of Distributions (Distributions in Excess of Earnings)	Accumulated Other Comprehensive Items, Net	Noncontrolling Interests	Redeemable Noncontrolling Interests
Balance (in shares) at Dec. 31, 2015		211,340,296
Balance at Dec. 31, 2015	$ 528,607	$ 2,113	$ 1,623,863	$ (942,218)	$ (174,917)	$ 19,766
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		552,458
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	5,114	$ 6	5,108
Parent cash dividends declared	(103,088)			(103,088)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Excluding Redeemable Noncontrolling Interest, Net of Tax	23,978				23,491	487
Market Value Adjustments for Securities	(734)				(734)
Net income (loss)	63,041			62,774		267
Noncontrolling interests equity contributions	1,299					1,299
Noncontrolling interests dividends	(579)					(579)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	3,506					3,506
Balance at Mar. 31, 2016	521,144	$ 2,119	1,628,971	(982,532)	(152,160)	24,746
Balance (in shares) at Mar. 31, 2016		211,892,754
Increase (Decrease) in Stockholders' Equity
Redeemable Noncontrolling Interest	$ 54,697						$ 54,697
Balance (in shares) at Dec. 31, 2016	263,682,670	263,682,670
Balance at Dec. 31, 2016	$ 1,936,671	$ 2,636	3,489,795	(1,343,311)	(212,573)	124
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		427,718
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	2,453	$ 5	2,448
Adjustments to Additional Paid in Capital, Change in Value of Redeemable Noncontrolling Interests	(307)		(307)
Temporary Equity, Accretion to Redemption Value							307
Parent cash dividends declared	(145,427)			(145,427)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Excluding Redeemable Noncontrolling Interest, Net of Tax	51,405				51,334	71
Temporary Equity, Foreign Currency Translation Adjustments							(621)
Market Value Adjustments for Securities	0
Net income (loss)	58,507
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	58,350			58,125		225
Temporary Equity, Net Income							157
Noncontrolling interests equity contributions	0					0
Noncontrolling interest equity contributions, redeemable noncontrolling interests							13,230
Noncontrolling interests dividends	(214)					(214)
Temporary Equity, Accretion of Dividends							(462)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	843					843
Balance at Mar. 31, 2017	$ 1,903,774	$ 2,641	$ 3,491,936	$ (1,430,613)	$ (161,239)	$ 1,049
Balance (in shares) at Mar. 31, 2017	264,110,388	264,110,388
Increase (Decrease) in Stockholders' Equity
Redeemable Noncontrolling Interest	$ 67,308						$ 67,308

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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows from Operating Activities:
Net income (loss)	$ 58,507	$ 63,041
Loss (Income) from discontinued operations	337	0
Adjustments to reconcile net income (loss) to cash flows from operating activities:
Depreciation	99,592	75,390
Amortization (includes amortization of deferred financing costs and discount of $2,749 and $3,907 for the three months ended March 31, 2016 and 2017, respectively)	29,022	14,563
Revenue reduction associated with amortization of permanent withdrawal fees	3,158	2,943
Stock-based compensation expense	6,549	6,885
(Benefit) Provision for deferred income taxes	(7,386)	(6,012)
(Gain) Loss on disposal/write-down of property, plant and equipment, net (including real estate)	(459)	(451)
Foreign currency transactions and other, net	(786)	(11,477)
Changes in Assets and Liabilities (exclusive of acquisitions):
Accounts receivable	(8,971)	(8,151)
Prepaid expenses and other	(24,826)	30,297
Accounts payable	5,869	(30,934)
Accrued expenses and deferred revenue	(36,112)	(55,494)
Other assets and long-term liabilities	(2,320)	518
Cash Flows from Operating Activities - Continuing Operations	122,174	81,118
Cash Flows from Operating Activities - Discontinued Operations	(337)	0
Cash Flows from Operating Activities	121,837	81,118
Cash Flows from Investing Activities:
Capital expenditures	(73,202)	(80,852)
Cash paid for acquisitions, net of cash acquired	(12,187)	(19,340)
Acquisition of customer relationships	(17,132)	(6,132)
Customer inducements	(4,271)	(1,126)
Net proceeds from Iron Mountain Divestments (see Note 10)	2,423	0
Proceeds from sales of property and equipment and other, net (including real estate)	66	169
Cash Flows from Investing Activities—Continuing Operations	(104,303)	(107,281)
Cash Flows from Investing Activities—Discontinued Operations	0	0
Cash Flows from Investing Activities	(104,303)	(107,281)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(2,682,348)	(2,384,215)
Proceeds from revolving credit and term loan facilities and other debt	2,714,783	2,509,845
Debt financing and equity contribution from noncontrolling interests	13,230	1,299
Debt repayment and equity distribution to noncontrolling interests	(2,562)	(414)
Parent cash dividends	(2,060)	(104,931)
Net (payments) proceeds associated with employee stock-based awards	(4,308)	(1,975)
Excess tax (deficiency) benefits from stock-based compensation	0	(348)
Payment of debt financing and stock issuance costs	(73)	0
Net Cash Provided by (Used in) Financing Activities	36,662	19,261
Cash Flows from Financing Activities—Discontinued Operations	0	0
Effect of Exchange Rates on Cash and Cash Equivalents	4,948	(3,534)
Increase (Decrease) in cash and cash equivalents	59,144	(10,436)
Cash and cash equivalents, beginning of period	236,484	128,381
Cash and cash equivalents, end of period	295,628	117,945
Supplemental Information:
Cash Paid for Interest	99,022	83,942
(Refund Received) Cash Paid for Income Taxes, Net	30,422	(3,211)
Non-Cash Investing and Financing Activities:
Capital Leases	24,395	18,005
Accrued Capital Expenditures	63,655	42,205
Dividends Payable	$ 148,992	$ 3,736

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CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Cash Flows [Abstract]
Deferred financing costs and discount included in Amortization	$ 3,907	$ 2,749

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General

3 Months Ended

Mar. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

General

The interim consolidated financial statements are presented herein and, in the opinion of management, reflect all adjustments of a normal recurring nature necessary for a fair presentation. Interim results are not necessarily indicative of results for a full year. Iron Mountain Incorporated, a Delaware corporation ("IMI"), and its subsidiaries ("we" or "us") store records, primarily physical records and data backup media, and provide information management services in various locations throughout North America, Europe, Latin America, Asia and Africa. We have a diversified customer base consisting of commercial, legal, financial, healthcare, insurance, life sciences, energy, business services, entertainment and government organizations.

The unaudited consolidated financial statements have been prepared pursuant to the rules and regulations of the United States Securities and Exchange Commission (the "SEC"). Certain information and footnote disclosures normally included in the annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") have been omitted pursuant to those rules and regulations, but we believe that the disclosures included herein are adequate to make the information presented not misleading. The Consolidated Financial Statements and Notes thereto, which are included herein, should be read in conjunction with the Consolidated Financial Statements and Notes thereto for the year ended December 31, 2016 included in our Annual Report on Form 10-K filed with the SEC on February 23, 2017 (our "Annual Report").

We have been organized and operating as a real estate investment trust for United States federal income tax purposes ("REIT") effective for our taxable year beginning January 1, 2014.

On May 2, 2016 (Sydney, Australia time), we completed the acquisition of Recall Holdings Limited ("Recall") pursuant to the Scheme Implementation Deed, as amended, with Recall (the "Recall Transaction"). See Note 4.

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Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

This Note 2 to Notes to Consolidated Financial Statements provides information and disclosure regarding certain of our significant accounting policies and should be read in conjunction with Note 2 to Notes to Consolidated Financial Statements included in our Annual Report, which may provide additional information with regard to the accounting policies set forth herein and other of our significant accounting policies.

a. Foreign Currency

Local currencies are the functional currencies for our operations outside the United States, with the exception of certain foreign holding companies and our financing centers in Europe, whose functional currency is the United States dollar. In those instances where the local currency is the functional currency, assets and liabilities are translated at period-end exchange rates, and revenues and expenses are translated at average exchange rates for the applicable period. Resulting translation adjustments are reflected in the accumulated other comprehensive items, net component of Iron Mountain Incorporated Stockholders' Equity, Redeemable Noncontrolling Interests and Noncontrolling Interests in the accompanying Consolidated Balance Sheets. The gain or loss on foreign currency transactions, calculated as the difference between the historical exchange rate and the exchange rate at the applicable measurement date, including those related to (i) borrowings in certain foreign currencies under our Revolving Credit Facility (as defined in Note 5) and (ii) certain foreign currency denominated intercompany obligations of our foreign subsidiaries to us and between our foreign subsidiaries, which are not considered permanently invested, are included in Other (Income) Expense, Net, in the accompanying Consolidated Statements of Operations.

Total (gain) loss on foreign currency transactions for the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016			2017
Total (gain) loss on foreign currency transactions	$	(12,542	)	$	(4,164	)

b.    Goodwill and Other Intangible Assets

Goodwill

Goodwill is not amortized but is reviewed annually for impairment, or more frequently if impairment indicators arise. We have selected October 1 as our annual goodwill impairment review date. We performed our most recent annual goodwill impairment review as of October 1, 2016 and concluded there was no impairment of goodwill at such date. As of December 31, 2016 and March 31, 2017, no factors were identified that would alter our October 1, 2016 goodwill impairment analysis. In making this assessment, we considered a number of factors including operating results, business plans, anticipated future cash flows, transactions and marketplace data. There are inherent uncertainties related to these factors and our judgment in applying them to the analysis of goodwill impairment. When changes occur in the composition of one or more reporting units, the goodwill is reassigned to the reporting units affected based on their relative fair values.

Our reporting units as of December 31, 2016 are described in detail in Note 2.h. to Notes to Consolidated Financial Statements included in our Annual Report. During the first three months of 2017, there were no changes to the composition of our reporting units. The goodwill associated with acquisitions completed during the first three months of 2017 (which are described in Note 4) has been incorporated into our existing reporting units.

The changes in the carrying value of goodwill attributable to each reportable operating segment for the three months ended March 31, 2017 are as follows:

	North American Records and Information Management Business		North American Data Management Business		Western European Business		Other International Business		Corporate and Other Business		Total Consolidated
Gross Balance as of December 31, 2016	$	2,485,806	$	559,443	$	405,571	$	743,126	$	25,922	$	4,219,868
Deductible goodwill acquired during the year	672		—		—		387		717		1,776
Non-deductible goodwill acquired during the year	—		—		—		4,311		—		4,311
Fair value and other adjustments(1)	5,548		525		2,818		2,802		—		11,693
Currency effects	1,569		448		4,649		27,801		—		34,467
Gross Balance as of March 31, 2017	$	2,493,595	$	560,416	$	413,038	$	778,427	$	26,639	$	4,272,115
Accumulated Amortization Balance as of December 31, 2016	$	204,895	$	53,753	$	56,150	$	49	$	—	$	314,847
Currency effects	58		15		125		12		—		210
Accumulated Amortization Balance as of March 31, 2017	$	204,953	$	53,768	$	56,275	$	61	$	—	$	315,057
Net Balance as of December 31, 2016	$	2,280,911	$	505,690	$	349,421	$	743,077	$	25,922	$	3,905,021
Net Balance as of March 31, 2017	$	2,288,642	$	506,648	$	356,763	$	778,366	$	26,639	$	3,957,058
Accumulated Goodwill Impairment Balance as of December 31, 2016	$	85,909	$	—	$	46,500	$	—	$	—	$	132,409
Accumulated Goodwill Impairment Balance as of March 31, 2017	$	85,909	$	—	$	46,500	$	—	$	—	$	132,409

_______________________________________________________________________________

(1) Total fair value and other adjustments include $11,693 in net adjustments primarily related to property, plant and equipment and customer relationship intangible assets (which represent adjustments within the applicable measurement period to provisional amounts recognized in purchase accounting).

Finite-lived intangible assets

Customer relationship intangible assets, which are acquired through either business combinations or acquisitions of customer relationships, are amortized over periods ranging from eight to 30 years and are included in depreciation and amortization in the accompanying Consolidated Statements of Operations. The value of customer relationship intangible assets is calculated based upon estimates of their fair value utilizing an income approach based on the present value of expected future cash flows.

Costs related to the acquisition of large volume accounts are capitalized. Free intake costs to transport boxes to one of our facilities, which include labor and transportation costs ("Move Costs"), are amortized over periods ranging from eight to 30 years and are included in depreciation and amortization in the accompanying Consolidated Statements of Operations. Payments that are made to a customer's current records management vendor in order to terminate the customer's existing contract with that vendor, or direct payments to a customer ("Permanent Withdrawal Fees"), are amortized over periods ranging from three to 15 years and are included in storage and service revenue in the accompanying Consolidated Statements of Operations. Move Costs and Permanent Withdrawal Fees are collectively referred to as "Customer Inducements". If the customer terminates its relationship with us, the unamortized carrying value of the Customer Inducement intangible asset is charged to expense or revenue. However, in the event of such termination, we generally collect, and record as income, permanent removal fees that generally equal or exceed the amount of the unamortized Customer Inducement intangible asset.

Other finite-lived intangible assets, including trade names, noncompetition agreements and trademarks, are capitalized and amortized over periods ranging from three to 10 years and are included in depreciation and amortization in the accompanying Consolidated Statements of Operations.

The components of our finite-lived intangible assets as of December 31, 2016 and March 31, 2017 are as follows:

	December 31, 2016							March 31, 2017
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer relationship intangible assets and Customer Inducements	$	1,604,020	$	(351,497	)	$	1,252,523	$	1,650,854	$	(373,925	)	$	1,276,929
Other finite-lived intangible assets (included in other assets, net)	24,788		(7,989		)	16,799		24,225		(10,478		)	13,747
Total	$	1,628,808	$	(359,486	)	$	1,269,322	$	1,675,079	$	(384,403	)	$	1,290,676

Amortization expense associated with finite-lived intangible assets and revenue reduction associated with the amortization of Permanent Withdrawal Fees for the three months ended March 31, 2016 and 2017 are as follows:

	Three Months Ended March 31,
	2016		2017
Amortization expense associated with finite-lived intangible assets	$	11,814	$	25,115
Revenue reduction associated with amortization of Permanent Withdrawal Fees	2,943		3,158

c.    Stock-Based Compensation

We record stock-based compensation expense, utilizing the straight-line method, for the cost of stock options, restricted stock units ("RSUs"), performance units ("PUs") and shares of stock issued under our employee stock purchase plan ("ESPP") (together, "Employee Stock-Based Awards").

Stock-based compensation expense for Employee Stock-Based Awards included in the accompanying Consolidated Statements of Operations for the three months ended March 31, 2016 and 2017 was $6,885 ($4,914 after tax or $0.02 per basic and diluted share) and $6,549 ($4,585 after tax or $0.02 per basic and diluted share), respectively.

Stock-based compensation expense for Employee Stock-Based Awards included in the accompanying Consolidated Statements of Operations is as follows:

	Three Months Ended March 31,
	2016		2017
Cost of sales (excluding depreciation and amortization)	$	27	$	28
Selling, general and administrative expenses	6,858		6,521
Total stock-based compensation	$	6,885	$	6,549

Stock Options

A summary of our stock options outstanding as of March 31, 2017 by vesting terms is as follows:

	March 31, 2017
	Stock Options Outstanding	% of Stock Options Outstanding
Three-year vesting period (10 year contractual life)	3,597,671	83.4	%
Five-year vesting period (10 year contractual life)	626,204	14.5	%
Ten-year vesting period (12 year contractual life)	90,754	2.1	%
	4,314,629	100.0	%

The weighted average fair value of stock options granted for the three months ended March 31, 2016 and 2017 was $2.49 and $4.26 per share, respectively. These values were estimated on the date of grant using the Black-Scholes option pricing model. The weighted average assumptions used for grants in the respective periods are as follows:

	Three Months Ended March 31,
Weighted Average Assumptions	2016		2017
Expected volatility	27.2	%	25.8	%
Risk-free interest rate	1.32	%	1.96	%
Expected dividend yield	7	%	6	%
Expected life	5.6 years		5.0 years

Expected volatility is calculated utilizing daily historical volatility over a period that equates to the expected life of the option. The risk-free interest rate was based on the United States Treasury interest rates whose term is consistent with the expected life (estimated period of time outstanding) of the stock options. Expected dividend yield is considered in the option pricing model and represents our current annualized expected per share dividends over the current trade price of our common stock. The expected life of the stock options granted is estimated using the historical exercise behavior of employees.

A summary of stock option activity for the three months ended March 31, 2017 is as follows:

	Stock Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Average Intrinsic Value
Outstanding at December 31, 2016	3,451,698		$	31.79
Granted	1,007,224		36.89
Exercised	(136,739	)	22.24
Forfeited	(5,773	)	28.21
Expired	(1,781	)	38.83
Outstanding at March 31, 2017	4,314,629		$	33.29	7.57	$	17,780
Options exercisable at March 31, 2017	2,126,229		$	30.09	5.84	$	15,685
Options expected to vest	2,022,212		$	36.41	9.24	$	1,955

The aggregate intrinsic value of stock options exercised for the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016		2017
Aggregate intrinsic value of stock options exercised	$	1,433	$	1,912

Restricted Stock Units

Under our various equity compensation plans, we may also grant RSUs. Our RSUs generally have a vesting period of between three and five years from the date of grant. However, RSUs granted to our non-employee directors vest immediately upon grant.

All RSUs accrue dividend equivalents associated with the underlying stock as we declare dividends. Dividends will generally be paid to holders of RSUs in cash upon the vesting date of the associated RSU and will be forfeited if the RSU does not vest. The fair value of RSUs is the excess of the market price of our common stock at the date of grant over the purchase price (which is typically zero).

Cash dividends accrued and paid on RSUs for the three months ended March 31, 2016 and 2017 are as follows:

	Three Months Ended March 31,
	2016		2017
Cash dividends accrued on RSUs	$	631	$	683
Cash dividends paid on RSUs	1,635		1,855

The fair value of RSUs vested during the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016		2017
Fair value of RSUs vested	$	14,978	$	14,026

A summary of RSU activity for the three months ended March 31, 2017 is as follows:

	RSUs		Weighted- Average Grant-Date Fair Value
Non-vested at December 31, 2016	1,163,393		$	33.21
Granted	525,328		36.90
Vested	(438,091	)	32.02
Forfeited	(11,597	)	34.65
Non-vested at March 31, 2017	1,239,033		$	35.18

Performance Units

Under our various equity compensation plans, we may also make awards of PUs. For the majority of outstanding PUs, the number of PUs earned is determined based on our performance against predefined targets of revenue and return on invested capital ("ROIC"). The number of PUs earned may range from 0% to 200% of the initial award. The number of PUs earned is determined based on our actual performance as compared to the targets at the end of a three-year performance period. Certain PUs that we grant will be earned based on a market condition associated with the total return on our common stock in relation to either (i) a subset of the Standard & Poor's 500 Index (for certain PUs granted prior to 2017), or (ii) a subset of the MSCI United States REIT Index (for certain PUs granted in 2017), rather than the revenue and ROIC targets noted above. The number of PUs earned based on the applicable market condition may range from 0% to 200% of the initial award.

All of our PUs will be settled in shares of our common stock and are subject to cliff vesting three years from the date of the original PU grant. PUs awarded to employees who terminate their employment during the three-year performance period and on or after attaining age 55 and completing 10 years of qualifying service are eligible for pro-rated vesting, subject to the actual achievement against the predefined targets or a market condition as discussed above, based on the number of full years of service completed following the grant date (but delivery of the shares remains deferred). As a result, PUs are generally expensed over the three-year performance period.

All PUs accrue dividend equivalents associated with the underlying stock as we declare dividends. Dividends will generally be paid to holders of PUs in cash upon the settlement date of the associated PU and will be forfeited if the PU does not vest.

Cash dividends accrued and paid on PUs for the three months ended March 31, 2016 and 2017 are as follows:

	Three Months Ended March 31,
	2016		2017
Cash dividends accrued on PUs	$	262	$	324
Cash dividends paid on PUs	645		205

During the three months ended March 31, 2017, we issued 229,692 PUs. The majority of our PUs are earned based on our performance against revenue and ROIC targets during their applicable performance period; therefore, we forecast the likelihood of achieving the predefined revenue and ROIC targets in order to calculate the expected PUs to be earned. We record a compensation charge based on either the forecasted PUs to be earned (during the performance period) or the actual PUs earned (at the three-year anniversary of the grant date) over the vesting period for each of the awards. The fair value of PUs based on our performance against revenue and ROIC targets is the excess of the market price of our common stock at the date of grant over the purchase price (which is typically zero). For PUs earned based on a market condition, we utilize a Monte Carlo simulation to fair value these awards at the date of grant, and such fair value is expensed over the three-year performance period. As of March 31, 2017, we expected 25%, 100% and 100% achievement of the predefined revenue and ROIC targets associated with the awards of PUs made in 2015, 2016 and 2017, respectively.

The fair value of earned PUs that vested during the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016		2017
Fair value of earned PUs that vested	$	4,081	$	905

A summary of PU activity for the three months ended March 31, 2017 is as follows:

	Original PU Awards		PU Adjustment(1)		Total PU Awards		Weighted- Average Grant-Date Fair Value
Non-vested at December 31, 2016	559,340		(121,038	)	438,302		$	33.67
Granted	229,692		—		229,692		41.93
Vested	(32,776	)	—		(32,776	)	27.60
Forfeited/Performance or Market Conditions Not Achieved	(3,480	)	(129,029	)	(132,509	)	28.57
Non-vested at March 31, 2017	752,776		(250,067	)	502,709		$	39.18

_______________________________________________________________________________

(1) Represents an increase or decrease in the number of original PUs awarded based on either the final performance criteria or market condition achievement at the end of the performance period of such PUs or a change in estimated awards based on the forecasted performance against the predefined targets.

Employee Stock Purchase Plan

We offer an ESPP in which participation is available to substantially all United States and Canadian employees who meet certain service eligibility requirements. The price for shares purchased under the ESPP is 95% of the market price of our common stock at the end of the offering period, without a look-back feature. As a result, we do not recognize compensation expense for the ESPP shares purchased. As of March 31, 2017, we had 727,594 shares available under the ESPP.

_______________________________________________________________________________

As of March 31, 2017, unrecognized compensation cost related to the unvested portion of our Employee Stock-Based Awards was $61,990 and is expected to be recognized over a weighted-average period of 2.4 years.

We generally issue shares of our common stock for the exercises of stock options, the vesting of RSUs and PUs and under our ESPP from unissued reserved shares.

d.    Income (Loss) Per Share—Basic and Diluted

Basic income (loss) per common share is calculated by dividing income (loss) by the weighted average number of common shares outstanding. The calculation of diluted income (loss) per share is consistent with that of basic income (loss) per share but gives effect to all potential common shares (that is, securities such as stock options, RSUs or PUs) that were outstanding during the period, unless the effect is antidilutive.

The calculation of basic and diluted income (loss) per share for the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016		2017
Income (loss) from continuing operations	$	63,041	$	58,844
Less: Net income (loss) attributable to noncontrolling interests	267		382
Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation)	$	62,774	$	58,462
(Loss) income from discontinued operations, net of tax	$	—	$	(337	)
Net income (loss) attributable to Iron Mountain Incorporated	$	62,774	$	58,125
Weighted-average shares—basic	211,526,000		263,855,000
Effect of dilutive potential stock options	482,388		461,761
Effect of dilutive potential RSUs and PUs	463,053		492,905
Weighted-average shares—diluted	212,471,441		264,809,666
Earnings (losses) per share—basic:
Income (loss) from continuing operations	$	0.30	$	0.22
(Loss) income from discontinued operations, net of tax	—		—
Net income (loss) attributable to Iron Mountain Incorporated(1)	$	0.30	$	0.22
Earnings (losses) per share—diluted:
Income (loss) from continuing operations	$	0.30	$	0.22
(Loss) income from discontinued operations, net of tax	—		—
Net income (loss) attributable to Iron Mountain Incorporated(1)	$	0.30	$	0.22
Antidilutive stock options, RSUs and PUs, excluded from the calculation	2,821,795		2,494,255

_______________________________________________________________________________

(1) Columns may not foot due to rounding.

e.    Income Taxes

We provide for income taxes during interim periods based on our estimate of the effective tax rate for the year. Discrete items and changes in our estimate of the annual effective tax rate are recorded in the period they occur. Our effective tax rate is subject to variability in the future due to, among other items: (1) changes in the mix of income between our qualified REIT subsidiaries ("QRSs") and our domestic taxable REIT subsidiaries ("TRSs"), as well as among the jurisdictions in which we operate; (2) tax law changes; (3) volatility in foreign exchange gains and losses; (4) the timing of the establishment and reversal of tax reserves; and (5) our ability to utilize net operating losses that we generate.

Our effective tax rate for the three months ended March 31, 2016 and 2017 was 15.9% and 13.5%, respectively. The primary reconciling items between the federal statutory tax rate of 35.0% and our overall effective tax rate in the three months ended March 31, 2016 were the benefit derived from the dividends paid deduction and differences in the rates of tax at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates. The primary reconciling items between the federal statutory tax rate of 35.0% and our overall effective tax rate in the three months ended March 31, 2017 were the benefit derived from the dividends paid deduction, a release of valuation allowances on certain of our foreign net operating losses of $7,511 as a result of the merger of certain of our foreign subsidiaries and differences in the rates of tax at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates. These benefits were partially offset by the impact of a legislative change enacted in the first quarter of 2017 in the United Kingdom which eliminated the deductibility of certain interest expense and increased our tax provision for the first quarter of 2017 by $1,764, or 2.5%.

During 2016, as a result of the closing of the Recall Transaction and the subsequent integration of Recall's operations into our operations, we reassessed our intentions regarding the indefinite reinvestment of current and future undistributed earnings of our foreign subsidiaries outside the United States (the "2016 Indefinite Reinvestment Assessment"). As a result of the 2016 Indefinite Reinvestment Assessment, we concluded that it is our intent to indefinitely reinvest our current and future undistributed earnings of our unconverted foreign TRSs outside the United States. Accordingly, we no longer provide incremental foreign withholding taxes on the retained book earnings of these unconverted foreign TRSs. As a REIT, future repatriation of incremental undistributed earnings of our foreign subsidiaries will not be subject to federal or state income tax, with the exception of foreign withholding taxes in limited instances; however, such future repatriations will require distribution in accordance with REIT distribution rules, and any such distribution may then be taxable, as appropriate, at the stockholder level. We continue, however, to provide for incremental foreign withholding taxes on net book over outside basis differences related to the earnings of our foreign QRSs and certain of our converted TRSs.

f.    Concentrations of Credit Risk

Financial instruments that potentially subject us to credit risk consist principally of cash and cash equivalents (including time deposits) and accounts receivable. The only significant concentrations of liquid investments as of December 31, 2016 and March 31, 2017, respectively, related to cash and cash equivalents. At December 31, 2016 and March 31, 2017, we had time deposits with six global banks and seven global banks, respectively. As of December 31, 2016 and March 31, 2017, our cash and cash equivalents was $236,484 and $295,628, respectively, including time deposits of $22,240 and $25,739, respectively.

g.    Fair Value Measurements

Our financial assets or liabilities that are carried at fair value are required to be measured using inputs from the three levels of the fair value hierarchy. A financial asset or liability's classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

The three levels of the fair value hierarchy are as follows:

Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that we have the ability to access at the measurement date.

Level 2—Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).

Level 3—Unobservable inputs that reflect our assumptions about the assumptions that market participants would use in pricing the asset or liability.

The assets and liabilities carried at fair value measured on a recurring basis as of December 31, 2016 and March 31, 2017, respectively, are as follows:

			Fair Value Measurements at December 31, 2016 Using
Description	Total Carrying Value at December 31, 2016		Quoted prices in active markets (Level 1)			Significant other observable inputs (Level 2)			Significant unobservable inputs (Level 3)
Time Deposits(1)	$	22,240	$	—		$	22,240		$	—
Trading Securities	10,659		10,181		(2)	478		(1)	—

			Fair Value Measurements at March 31, 2017 Using
Description	Total Carrying Value at March 31, 2017		Quoted prices in active markets (Level 1)			Significant other observable inputs (Level 2)			Significant unobservable inputs (Level 3)
Time Deposits(1)	$	25,739	$	—		$	25,739		$	—
Trading Securities	10,342		9,958		(2)	384		(1)	—
Derivative Assets(3)	114		—			114			—

_______________________________________________________________________________

(1) Time deposits and certain trading securities (included in Prepaid expenses and other in our Consolidated Balance Sheets) are measured based on quoted prices for similar assets and/or subsequent transactions.

(2) Certain trading securities are measured at fair value using quoted market prices.

(3) Derivative assets relate to short-term (six months or less) foreign currency contracts that we have entered into to hedge certain of our foreign exchange intercompany exposures, as more fully disclosed at Note 3. We calculate the value of such forward contracts by adjusting the spot rate utilized at the balance sheet date for translation purposes by an estimate of the forward points observed in active markets.

Disclosures are required in the financial statements for items measured at fair value on a non-recurring basis. We did not have any material items that are measured at fair value on a non-recurring basis at December 31, 2016 and March 31, 2017, with the exception of: (i) goodwill (as disclosed in Note 2.b.); (ii) the assets and liabilities acquired through acquisitions (as disclosed in Note 6 to Notes to Consolidated Financial Statements included in our Annual Report and Note 4); (iii) the Access Contingent Consideration (as defined and disclosed in Note 10); and (iv) the redemption value of certain redeemable noncontrolling interests (as disclosed in Note 2.x. in Notes to Consolidated Financial Statements included in our Annual Report), all of which are based on Level 3 inputs.

The fair value of our long-term debt, which was determined based on either Level 1 inputs or Level 3 inputs, is disclosed in Note 5. Long-term debt is measured at cost in our Consolidated Balance Sheets as of December 31, 2016 and March 31, 2017.

h.    Accumulated Other Comprehensive Items, Net

The changes in accumulated other comprehensive items, net for the three months ended March 31, 2016 and 2017, respectively, are as follows:

	Foreign Currency Translation Adjustments			Market Value Adjustments for Securities			Total
Balance as of December 31, 2015	$	(175,651	)	$	734		$	(174,917	)
Other comprehensive income (loss):
Foreign currency translation adjustments	23,491			—			23,491
Market value adjustments for securities	—			(734		)	(734		)
Total other comprehensive income (loss)	23,491			(734		)	22,757
Balance as of March 31, 2016	$	(152,160	)	$	—		$	(152,160	)

	Foreign Currency Translation Adjustments			Market Value Adjustments for Securities		Total
Balance as of December 31, 2016	$	(212,573	)	$	—	$	(212,573	)
Other comprehensive income (loss):
Foreign currency translation adjustments	51,334			—		51,334
Market value adjustments for securities	—			—		—
Total other comprehensive income (loss)	51,334			—		51,334
Balance as of March 31, 2017	$	(161,239	)	$	—	$	(161,239	)

i.    Other (Income) Expense, Net

Other (income) expense, net for the three months ended March 31, 2016 and 2017 consists of the following:

	Three Months Ended March 31,
	2016			2017
Foreign currency transaction (gains) losses, net	$	(12,542	)	$	(4,164	)
Other, net	605			(2,200		)
	$	(11,937	)	$	(6,364	)

j.    Property, Plant and Equipment and Long-Lived Assets

During the three months ended March 31, 2016 and 2017, we capitalized $3,403 and $5,283 of costs, respectively, associated with the development of internal use computer software projects.

Consolidated gain on disposal/write-down of property, plant and equipment (excluding real estate), net for the three months ended March 31, 2016 and 2017 was $451 and $459, respectively. These gains are primarily associated with the retirement of leased vehicles accounted for as capital lease assets within our North American Records and Information Management Business segment.

k.    New Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In January 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment ("ASU 2017-04"). ASU 2017-04 modifies the process by which entities will test goodwill for impairment. Under existing GAAP, when the carrying value of a reporting unit exceeds the reporting unit’s fair value, an entity would then proceed to a “Step 2” goodwill impairment analysis, which requires calculating the implied fair value of goodwill by assigning the fair value of a reporting unit to all of its assets and liabilities, as if that reporting unit had been acquired in a business combination. Under ASU 2017-04, a goodwill impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying value of the reporting unit’s goodwill. We adopted ASU 2017-04 in the first quarter of 2017 and it did not impact our consolidated financial statements.

As Yet Adopted Accounting Pronouncements

a. ASU 2014-09

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"). ASU 2014-09 provides guidance for management to reassess revenue recognition as it relates to: (1) transfer of control, (2) variable consideration, (3) allocation of transaction price based on relative standalone selling price, (4) licenses, (5) time value of money, and (6) contract costs.

ASU 2014-09 will replace the current revenue recognition criteria under GAAP, including industry-specific requirements, and provide companies with a single revenue recognition model for recognizing revenue from contracts with customers. The core principle of ASU 2014-09 is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for such goods or services. The two permitted transition methods under ASU 2014-09 are: (i) the full retrospective method, whereby ASU 2014-09 would be applied to each prior reporting period presented and the cumulative effect of adoption would be recognized at the earliest period shown, or (ii) the modified retrospective method, whereby the cumulative effect of applying ASU 2014-09 would be recognized at the date of initial application. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which deferred the effective date of ASU 2014-09 for one year, making ASU 2014-09 effective for us on January 1, 2018, with early adoption permitted as of January 1, 2017. We will adopt ASU 2014-09 as of January 1, 2018 using the modified retrospective method.

During 2015, we established a project team responsible for the assessment and implementation of ASU 2014-09. We utilized a bottoms-up approach to analyze the impact of ASU 2014-09 on our contracts with customers by reviewing our current accounting policies and practices to identify potential differences that would result from applying the requirements of ASU 2014-09 to our contracts with customers. We are currently in the process of designing and implementing appropriate changes to our business processes, systems and controls to support the accounting and the financial disclosure requirements under ASU 2014-09. We have been closely monitoring the FASB activity related to specific interpretative issues pertaining to ASU 2014-09. During the second half of 2016, we substantially completed our evaluation of the potential changes resulting from the adoption of ASU 2014-09 on our accounting and the financial disclosure requirements and are now moving into the more detailed quantification of the impacts of adopting ASU 2014-09, the more significant of which are discussed below. Based on our analysis to date, we expect that the most significant impacts associated with adopting ASU 2014-09 compared to current GAAP will relate to (i) the deferral of certain commissions on our long-term storage contracts (“Accounting for Commissions”) and (ii) certain policy changes related to initial moves of physical storage, which will be subject to new cost guidance (“Accounting for Initial Moves”).

i. Accounting for Commissions

Under current GAAP, commissions that we pay related to our long-term storage contracts are expensed as incurred. Under ASU 2014-09, however, certain commissions will be capitalized and amortized over the period of expected earned revenue. In the year of adoption, this will result in increased intangible contract assets on our Consolidated Balance Sheet, a reduction in selling, general and administrative expenses and a corresponding increase in amortization expense (assuming consistent levels of spending up through the adoption date) on our Consolidated Statement of Operations and an increase in cash flows from operating activities and a corresponding increase in cash used for investing activities on our Consolidated Statement of Cash Flows.

ii. Accounting for Initial Moves

Under current GAAP, intake costs not charged to transport boxes to one of our facilities, which include labor and transportation costs, are capitalized and amortized as a component of depreciation and amortization in our Consolidated Statements of Operations. Under ASU 2014-09, however, the revenue and costs associated with all initial moves of physical storage, regardless of whether or not the services associated with such initial moves are provided to the customer at no charge, will be deferred and recognized over the period consistent with the transfer of the service to the customer to which the asset relates. In the year of adoption, this will result in decreased intangible assets and increased deferred revenue on our Consolidated Balance Sheet, a reduction in cost of sales and a corresponding increase in amortization expense (assuming consistent levels of spending up through the adoption date) on our Consolidated Statement of Operations and an increase in cash flows from operating activities and a corresponding increase in cash used for investing activities on our Consolidated Statement of Cash Flows.

b. Other As Yet Adopted Accounting Pronouncements

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities ("ASU 2016-01"). ASU 2016-01 requires that most equity investments be measured at fair value, with subsequent changes in fair value recognized in net income. ASU 2016-01 also impacts financial liabilities under the fair value option and the presentation and disclosure requirements for financial instruments. ASU 2016-01 is effective for us on January 1, 2018. We do not believe that the adoption of ASU 2016-01 will have a material impact on our consolidated financial statements.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) ("ASU 2016-02"). ASU 2016-02 requires lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by all leases with terms of more than 12 months. ASU 2016-02 also will require certain qualitative and quantitative disclosures designed to give financial statement users information on the amount, timing, and uncertainty of cash flows arising from leases. ASU 2016-02 will be effective for us on January 1, 2019, with early adoption permitted. We will adopt ASU 2016-02 on January 1, 2019 and are currently evaluating the impact ASU 2016-02 will have on our consolidated financial statements.

In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash ("ASU 2016-18"). ASU 2016-18 provides guidance on the classification of restricted cash in the statement of cash flows. ASU 2016-18 is effective for us on January 1, 2018, with early adoption permitted and is required to be adopted on a retrospective basis. We do not believe that the adoption of ASU 2016-18 will have a material impact on our consolidated financial statements.

In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business ("ASU 2017-01"). ASU 2017-01 provides greater clarity on the definition of a business to assist entities in evaluating whether transactions should be accounted for as an acquisition or disposal of assets or businesses. ASU 2017-01 is effective for us on January 1, 2018, with early adoption permitted. We are currently evaluating the impact ASU 2017-01 will have on our consolidated financial statements.

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Derivative Instruments and Hedging Activities

3 Months Ended

Mar. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities Disclosure [Text Block]

Historically, we have entered into forward contracts to hedge our exposures in certain foreign currencies. At the maturity of the forward contracts, we may enter into new forward contracts to hedge movements in the underlying currencies. At the time of settlement, we either pay or receive the net settlement amount from the forward contract and recognize this amount in other expense (income), net in the Consolidated Statements of Operations as a realized foreign exchange gain or loss. At the end of each month, we mark the outstanding forward contracts to market and record an unrealized foreign exchange gain or loss for the mark-to-market valuation. We have not designated any of the forward contracts we have entered into as hedges. Our policy is to record the fair value of each derivative instrument on a gross basis. As of December 31, 2016, we had no forward contracts outstanding. As of March 31, 2017, we had outstanding forward contracts to purchase 46,000 Canadian dollars and sell $34,439 to hedge our foreign exchange exposures associated with the Canadian dollar. As of March 31, 2017, we recorded a derivative asset of $114 which is a component of Prepaid expenses and other on our Consolidated Balance Sheet. During the three months ended March 31, 2016 and 2017, there were no cash receipts or payments included in cash from operating activities from continuing operations related to settlements associated with foreign currency forward contracts.

We have designated a portion of our Euro denominated borrowings by IMI under our Revolving Credit Facility (discussed more fully in Note 5) as a hedge of net investment of certain of our Euro denominated subsidiaries. For the three months ended March 31, 2016 and 2017, we designated, on average, 30,218 and 49,600 Euros, respectively, of our Euro denominated borrowings by IMI under our Revolving Credit Facility as a hedge of net investment of certain of our Euro denominated subsidiaries. As a result, we recorded the following foreign exchange (losses) gains, net of tax, related to the change in fair value of such debt due to currency translation adjustments, which is a component of accumulated other comprehensive items, net:

	Three Months Ended March 31,
	2016			2017
Foreign exchange (losses) gains	$	(1,342	)	$	(1,072	)
Less: Tax (benefit) expense on foreign exchange (losses) gains	—			—
Foreign exchange (losses) gains, net of tax	$	(1,342	)	$	(1,072	)

As of March 31, 2017, cumulative net gains of $17,131, net of tax, are recorded in accumulated other comprehensive items, net associated with this net investment hedge.

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Acquisitions

3 Months Ended

Mar. 31, 2017

Business Combinations [Abstract]

Acquisitions

We account for acquisitions using the acquisition method of accounting, and, accordingly, the assets and liabilities acquired are recorded at their estimated fair values and the results of operations for each acquisition have been included in our consolidated results from their respective acquisition dates. Cash consideration for our various acquisitions in 2017 was primarily provided through cash flows from operating activities and borrowings, as well as cash and cash equivalents on-hand.

a. Acquisition of Recall in 2016

On May 2, 2016 (Sydney, Australia time), we completed the Recall Transaction. At the closing of the Recall Transaction, we paid approximately $331,800 in cash and issued 50,233,412 shares of our common stock which, based on the closing price of our common stock as of April 29, 2016 (the last day of trading on the New York Stock Exchange prior to the closing of the Recall Transaction) of $36.53 per share, resulted in a total purchase price to Recall shareholders of approximately $2,166,900.

In connection with the acquisition of Recall, we sought regulatory approval of the Recall Transaction from the United States Department of Justice (the “DOJ”), the Australian Competition and Consumer Commission (the “ACCC”), the Canada Competition Bureau (the “CCB”) and the United Kingdom Competition and Markets Authority (the “CMA”).

As part of the regulatory approval process, we agreed to make certain divestments in order to address competition concerns raised by the DOJ, the ACCC, the CCB and the CMA in respect of the Recall Transaction (the “Divestments”). The Divestments, all of which were completed during the year ended December 31, 2016, are defined in Note 6 to Notes to Consolidated Financial Statements included in our Annual Report and are described in greater detail within that note, as well as within Note 10 in this Quarterly Report, were as follows:

i. United States

• The Initial United States Divestments

• The Seattle/Atlanta Divestments

ii. Australia

• The Australia Divestment Business

iii. Canada

• The Recall Canadian Divestments

• The Iron Mountain Canadian Divestments

iv. United Kingdom

• The UK Divestments

The unaudited consolidated pro forma financial information (the "Pro Forma Financial Information") below summarizes the combined results of us and Recall on a pro forma basis as if the Recall Transaction had occurred on January 1, 2015. The Pro Forma Financial Information is presented for informational purposes and is not necessarily indicative of the results of operations that would have been achieved if the acquisition had taken place on January 1, 2015. The Pro Forma Financial Information, for all periods presented, includes adjustments to convert Recall's historical results from International Financial Reporting Standards to GAAP, our current estimates of purchase accounting adjustments (including amortization expenses from acquired intangible assets, depreciation of acquired property, plant and equipment and amortization of favorable and unfavorable operating leases), stock-based compensation and related tax effects. Through March 31, 2017, we and Recall have collectively incurred $140,661 of operating expenditures to complete the Recall Transaction (including advisory and professional fees and costs to complete the Divestments and to provide transitional services required to support the divested businesses during a transition period). These operating expenditures have been reflected within the results of operations in the Pro Forma Financial Information as if they were incurred on January 1, 2015. The costs we have incurred to integrate Recall with our existing operations, including moving, severance, facility upgrade, REIT conversion and system upgrade costs are reflected in the Pro Forma Financial Information in the period in which they were incurred.

The Pro Forma Financial Information, for all periods presented, excludes from income (loss) from continuing operations the results of operations of the Initial United States Divestments, the Seattle/Atlanta Divestments, the Recall Canadian Divestments and the UK Divestments, as these businesses are presented as discontinued operations. See Note 10 for information regarding our conclusion with respect to the presentation of these divestments as discontinued operations. The results of the Australia Divestment Business and the Iron Mountain Canadian Divestments are included within the results from continuing operations in the Pro Forma Financial Information through the closing date of the Australia Sale (as defined in Note 10), in the case of the Australia Divestment Business, and through the closing date of the ARKIVE Sale (as defined in Note 10), in the case of the Iron Mountain Canadian Divestments, as these businesses do not qualify for discontinued operations. See Note 10 for information regarding our conclusion that these divestments do not meet the criteria to be reported as discontinued operations. The Australia Divestment Business and the Iron Mountain Canadian Divestments, collectively, represent $13,376 of total revenues and $806 of total income from continuing operations for the three months ended March 31, 2016.

	Three Months Ended March 31, 2016
Total Revenues	$	937,952
Income from Continuing Operations	$	58,058
Per Share Income from Continuing Operations - Basic	$	0.22
Per Share Income from Continuing Operations - Diluted	$	0.22

In addition to our acquisition of Recall, we completed certain other acquisitions during 2016 and 2017. The Pro Forma Financial Information does not reflect these acquisitions due to the insignificant impact of these acquisitions on our consolidated results of operations.

b. Other Noteworthy Acquisitions

In November 2016, we entered into a binding agreement to acquire the information management assets and operations of Santa Fe Group A/S ("Santa Fe") in ten regions within Europe and Asia in order to expand our presence in southeast Asia and western Europe. In December 2016, we acquired the information management assets and operations of Santa Fe in Hong Kong, Malaysia, Singapore, Spain and Taiwan (the “2016 Santa Fe Transaction”) for approximately 15,200 Euros (approximately $16,000, based upon the exchange rate between the United States dollar and the Euro as of December 30, 2016, the closing date of the 2016 Santa Fe Transaction). Of the total purchase price, 13,500 Euros (or approximately $14,200, based upon the exchange rate between the United States dollar and the Euro on the closing date of the 2016 Santa Fe Transaction) was paid during the year ended December 31, 2016, and the remaining balance is due on the 18-month anniversary of the closing of the 2016 Santa Fe Transaction. During the first quarter of 2017, we acquired the information management assets and operations of Santa Fe in Macau and South Korea (the "2017 Santa Fe Transaction") for approximately 925 Euros (or approximately $1,000, based upon the exchange rate between the United States dollar and the Euro on the closing date of the 2017 Santa Fe Transaction). We expect to acquire Santa Fe's information management assets and operations in India, Indonesia and the Philippines by the end of the second quarter of 2017.

In addition to the 2017 Santa Fe Transaction noted above, during 2017, in order to enhance our existing operations in the United States and Greece and to expand our operations into the United Arab Emirates, we completed the acquisition of three storage and records management companies and one art storage company for total consideration of approximately $13,700. The individual purchase prices of these acquisitions ranged from approximately $2,000 to approximately $4,400.

A summary of the cumulative consideration paid and the preliminary allocation of the purchase price paid for all of our 2017 acquisitions is as follows:

Cash Paid (gross of cash acquired)(1)	$	13,736
Fair Value of Noncontrolling Interests	843
Total Consideration	14,579
Fair Value of Identifiable Assets Acquired:
Cash	1,631
Accounts Receivable and Prepaid Expenses	1,771
Other Assets	692
Property, Plant and Equipment(2)	2,845
Customer Relationship Intangible Assets(3)	8,222
Accounts Payable, Accrued Expenses and Other Liabilities	(6,208		)
Deferred Income Taxes	(461		)
Total Fair Value of Identifiable Net Assets Acquired	8,492
Goodwill Initially Recorded(4)	$	6,087

_______________________________________________________________________________

(1) Included in cash paid for acquisitions in the Consolidated Statement of Cash Flows for the three months ended March 31, 2017 is net cash acquired of $1,631 and contingent and other payments, net of $82 related to acquisitions made in previous years.

(2) Consists primarily of racking structures and warehouse equipment. These assets are depreciated using the straight-line method with the useful lives as noted in Note 2.f. to Notes to Consolidated Financial Statements included in our Annual Report.

(3) The weighted average lives of customer relationship intangible assets associated with acquisitions in 2017 was 20 years.

(4) The goodwill associated with acquisitions is primarily attributable to the assembled workforce, expanded market opportunities and costs and other operating synergies anticipated upon the integration of the operations of us and the acquired businesses.

Allocations of the purchase price for acquisitions made in 2016 and 2017 were based on estimates of the fair value of the net assets acquired and are subject to adjustment upon the finalization of the purchase price allocations. The accounting for business combinations requires estimates and judgments as to expectations for future cash flows of the acquired business, and the allocations of those cash flows to identifiable tangible and intangible assets, in determining the assets acquired and liabilities assumed. The fair values assigned to tangible and intangible assets acquired and liabilities assumed, including contingent consideration, are based on management's best estimates and assumptions, as well as other information compiled by management, including valuations that utilize customary valuation procedures and techniques. The estimates and assumptions underlying the initial valuations are subject to the collection of information necessary to complete the valuations within the measurement periods, which are up to one year from the respective acquisition dates. The preliminary purchase price allocations that are not finalized as of March 31, 2017 primarily relate to the final assessment of the fair values of intangible assets (primarily customer relationship intangible assets), property, plant and equipment (primarily racking structures), operating leases, contingencies and income taxes (primarily deferred income taxes), primarily associated with the Recall Transaction and the Santa Fe Transaction, as well as other acquisitions which closed in 2017.

As the valuation of certain assets and liabilities for purposes of purchase price allocations are preliminary in nature, they are subject to adjustment as additional information is obtained about the facts and circumstances regarding these assets and liabilities that existed at the acquisition date. Any adjustments to our estimates of purchase price allocation will be made in the periods in which the adjustments are determined and the cumulative effect of such adjustments will be calculated as if the adjustments had been completed as of the acquisition dates. Adjustments recorded during the three months ended March 31, 2017 were not material to our results from operations.

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Debt

3 Months Ended

Mar. 31, 2017

Debt Disclosure [Abstract]

Debt

Long-term debt is as follows:

	December 31, 2016											March 31, 2017
	Debt (inclusive of discount)			Unamortized Deferred Financing Costs			Carrying Amount			Fair Value		Debt (inclusive of discount)				Unamortized Deferred Financing Costs			Carrying Amount			Fair Value
Revolving Credit Facility	$	953,548		$	(7,530	)	$	946,018		$	953,548	$	988,327			$	(6,800	)	$	981,527		$	988,327
Term Loan	234,375			—			234,375			234,375		228,125				—			228,125			228,125
Australian Dollar Term Loan (the "AUD Term Loan")	177,198			(3,774		)	173,424			178,923		186,963				(3,832		)	183,131			188,715
6% Senior Notes due 2020 (the "6% Notes due 2020")(1)(2)	1,000,000			(12,730		)	987,270			1,052,500		1,000,000				(11,881		)	988,119			1,046,250
43/8% Senior Notes due 2021 (the "43/8% Notes")(1)(2)	500,000			(7,593		)	492,407			511,250		500,000				(7,163		)	492,837			512,500
61/8% CAD Senior Notes due 2021 (the "CAD Notes due 2021")(3)	148,792			(1,635		)	147,157			155,860		150,045				(1,561		)	148,484			155,859
61/8% GBP Senior Notes due 2022 (the "GBP Notes")(2)	493,648			(6,214		)	487,434			527,562		499,508				(6,012		)	493,496			529,478
6% Senior Notes due 2023 (the "6% Notes due 2023")(1)	600,000			(7,322		)	592,678			637,500		600,000				(7,048		)	592,952			632,280
53/8% CAD Senior Notes due 2023 (the "CAD Notes due 2023")(2)(3)	185,990			(3,498		)	182,492			188,780		187,557				(3,405		)	184,152			193,418
53/4% Senior Subordinated Notes due 2024 (the "53/4% Notes")(1)	1,000,000			(10,529		)	989,471			1,027,500		1,000,000				(10,186		)	989,814			1,017,500
53/8% Senior Notes due 2026 (the "53/8% Notes")(2)	250,000			(4,044		)	245,956			242,500		250,000				(3,937		)	246,063			248,750
Real Estate Mortgages, Capital Leases and Other	478,565			(1,277		)	477,288			478,565		518,191				(1,239		)	516,952			518,191
Accounts Receivable Securitization Program(4)	247,000			(384		)	246,616			247,000		250,000				(308		)	249,692			250,000
Mortgage Securitization Program	50,000			(1,405		)	48,595			50,000		50,000				(1,369		)	48,631			50,000
Total Long-term Debt	6,319,116			(67,935		)	6,251,181					6,408,716			—	(64,741		)	6,343,975
Less Current Portion	(172,975		)	—			(172,975		)			(421,535		)		308			(421,227		)
Long-term Debt, Net of Current Portion	$	6,146,141		$	(67,935	)	$	6,078,206				$	5,987,181			$	(64,433	)	$	5,922,748

______________________________________________________________

(1) Collectively, the "Parent Notes".

(2) Collectively, the "Unregistered Notes".

(3) Collectively, the "CAD Notes".

(4) Because the Accounts Receivable Securitization Program terminates on March 6, 2018, at which point all obligations under the program become due, this debt is classified within the current portion of long-term debt in our Consolidated Balance Sheet as of March 31, 2017.

See Note 4 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding our long-term debt, including the direct obligors of each of our debt instruments as well as information regarding the fair value of our debt instruments (including the levels of the fair value hierarchy used to determine the fair value of our debt instruments). The levels of the fair value hierarchy used to determine the fair value of our debt as of March 31, 2017 are consistent with the levels of the fair value hierarchy used to determine the fair value of our debt as of December 31, 2016 (which are disclosed in our Annual Report). Additionally, see Note 6 for information regarding which of our consolidated subsidiaries guarantee certain of our debt instruments.

a. Credit Agreement

On July 2, 2015, we entered into a new credit agreement (the "Credit Agreement") to refinance our then existing credit agreement. The Credit Agreement terminates on July 6, 2019, at which point all obligations become due, but may be extended by one year at our option, subject to the conditions set forth in the Credit Agreement. Borrowings under the Credit Agreement may be prepaid without penalty or premium, in whole or in part, at any time. The Credit Agreement consists of a revolving credit facility (the "Revolving Credit Facility") and a term loan (the "Term Loan"). The maximum amount permitted to be borrowed under the Revolving Credit Facility is $1,750,000. The original amount of the Term Loan was $250,000. We have the option to request additional commitments of up to $250,000, in the form of term loans or through increased commitments under the Revolving Credit Facility, subject to the conditions specified in the Credit Agreement.

The Revolving Credit Facility is supported by a group of 25 banks and enables IMI and certain of its United States and foreign subsidiaries to borrow in United States dollars and (subject to sublimits) a variety of other currencies (including Canadian dollars, British pounds sterling, Euros and Australian dollars, among other currencies) in an aggregate outstanding amount not to exceed $1,750,000. The Term Loan is to be paid in quarterly installments in an amount equal to $3,125 per quarter, with the remaining balance due on July 3, 2019.

The interest rate on borrowings under the Credit Agreement varies depending on our choice of interest rate and currency options, plus an applicable margin, which varies based on our consolidated leverage ratio. Additionally, the Credit Agreement requires the payment of a commitment fee on the unused portion of the Revolving Credit Facility, which fee ranges from between 0.25% to 0.4% based on our consolidated leverage ratio and fees associated with outstanding letters of credit. As of March 31, 2017, we had $988,327 and $228,125 of outstanding borrowings under the Revolving Credit Facility and the Term Loan, respectively. Of the $988,327 of outstanding borrowings under the Revolving Credit Facility, $741,000 was denominated in United States dollars and 231,530 was denominated in Euros. In addition, we also had various outstanding letters of credit totaling $53,649. The remaining amount available for borrowing under the Revolving Credit Facility as of March 31, 2017, which is based on IMI's leverage ratio, the last 12 months' earnings before interest, taxes, depreciation and amortization and rent expense ("EBITDAR"), other adjustments as defined in the Credit Agreement and current external debt, was $708,024 (which amount represents the maximum availability as of such date). The average interest rate in effect under the Credit Agreement was 3.0% as of March 31, 2017. The average interest rate in effect under the Revolving Credit Facility was 3.0% and ranged from 2.3% to 5.0% as of March 31, 2017 and the interest rate in effect under the Term Loan as of March 31, 2017 was 3.2%.

The capital stock or other equity interests of most of our United States subsidiaries, and up to 66% of the capital stock or other equity interests of most of our first-tier foreign subsidiaries, are pledged to secure borrowings under the Credit Agreement, together with all intercompany obligations (including promissory notes) of subsidiaries owed to us or to one of our United States subsidiary guarantors. In addition, Iron Mountain Canada Operations ULC ("Canada Company") has pledged 66% of the capital stock of its subsidiaries, and all intercompany obligations (including promissory notes) owed to or held by it, to secure the Canadian dollar subfacility under the Revolving Credit Facility.

The Credit Agreement, our indentures and other agreements governing our indebtedness contain certain restrictive financial and operating covenants, including covenants that restrict our ability to complete acquisitions, pay cash dividends, incur indebtedness, make investments, sell assets and take certain other corporate actions. The covenants do not contain a rating trigger. Therefore, a change in our debt rating would not trigger a default under the Credit Agreement, our indentures or other agreements governing our indebtedness. The Credit Agreement uses EBITDAR-based calculations as the primary measures of financial performance, including leverage and fixed charge coverage ratios.

Our leverage and fixed charge coverage ratios under the Credit Agreement as of December 31, 2016 and March 31 2017, respectively, and our leverage ratio under our indentures as of December 31, 2016 and March 31, 2017, respectively, are as follows:

	December 31, 2016	March 31, 2017	Maximum/Minimum Allowable
Net total lease adjusted leverage ratio	5.7	5.8	Maximum allowable of 6.5
Net secured debt lease adjusted leverage ratio	2.7	2.7	Maximum allowable of 4.0
Bond leverage ratio (not lease adjusted)	5.2	5.5	Maximum allowable of 6.5
Fixed charge coverage ratio	2.4	2.3	Minimum allowable of 1.5

As noted in the table above, our maximum allowable net total lease adjusted leverage ratio under the Credit Agreement is 6.5. The Credit Agreement also contains a provision which limits, in certain circumstances, our dividends in any four consecutive fiscal quarters to 95% of Funds From Operations (as defined in the Credit Agreement) for such four fiscal quarters or, if greater, the amount that we would be required to pay in order to continue to be qualified for taxation as a REIT or to avoid the imposition of income or excise taxes on IMI. This limitation only applies when our net total lease adjusted leverage ratio exceeds 6.0 as measured as of the end of the most recently completed fiscal quarter.

Noncompliance with these leverage and fixed charge coverage ratios would have a material adverse effect on our financial condition and liquidity.

b. Australian Dollar Term Loan

On September 28, 2016, Iron Mountain Australia Group Pty, Ltd., a wholly owned subsidiary of IMI, entered into a 250,000 Australian dollar Syndicated Term Loan B Facility (the "AUD Term Loan"), which matures in September 2022. The AUD Term Loan was issued at 99% of par. The net proceeds of approximately 243,750 Australian dollars (or approximately $185,800, based upon the exchange rate between the Australian dollar and the United States dollar on September 28, 2016 (the settlement date for the AUD Term Loan)), after paying commissions to the joint lead arrangers and net of the original discount, were used to repay outstanding borrowings under the Revolving Credit Facility and for general corporate purposes.

Principal payments on the AUD Term Loan are to be paid in quarterly installments in an amount equivalent to an aggregate of 6,250 Australian dollars per year, with the remaining balance due on September 28, 2022. The AUD Term Loan is secured by substantially all assets of Iron Mountain Australia Group Pty. Ltd. IMI and the Guarantors guarantee all obligations under the AUD Term Loan. The interest rate on the AUD Term Loan is based upon BBSY (an Australian benchmark variable interest rate) plus 4.3%. As of March 31, 2017, we had 246,875 Australian dollars ($188,715 based upon the exchange rate between the United States dollar and the Australian dollar as of March 31, 2017) outstanding on the AUD Term Loan and the interest rate in effect under the AUD Term Loan was 6.1%. The amount of debt for the AUD Term Loan reflects an unamortized original issue discount of $1,725 and $1,752 as of December 31, 2016 and March 31, 2017, respectively.

c. Accounts Receivable Securitization Program

In March 2015, we entered into a $250,000 accounts receivable securitization program (the "Accounts Receivable Securitization Program") involving several of our wholly owned subsidiaries and certain financial institutions. Under the Accounts Receivable Securitization Program, certain of our subsidiaries sell substantially all of their United States accounts receivable balances to our wholly owned special purpose entities, Iron Mountain Receivables QRS, LLC and Iron Mountain Receivables TRS, LLC (the "Accounts Receivable Securitization Special Purpose Subsidiaries"). The Accounts Receivable Securitization Special Purpose Subsidiaries use the accounts receivable balances to collateralize loans obtained from certain financial institutions. The Accounts Receivable Securitization Special Purpose Subsidiaries are consolidated subsidiaries of IMI. The Accounts Receivable Securitization Program is accounted for as a collateralized financing activity, rather than a sale of assets, and therefore: (i) accounts receivable balances pledged as collateral are presented as assets and borrowings are presented as liabilities on our Consolidated Balance Sheets, (ii) our Consolidated Statements of Operations reflect the associated charges for bad debt expense related to pledged accounts receivable (a component of selling, general and administrative expenses) and reductions to revenue due to billing and service related credit memos issued to customers and related reserves, as well as interest expense associated with the collateralized borrowings and (iii) receipts from customers related to the underlying accounts receivable are reflected as operating cash flows and borrowings and repayments under the collateralized loans are reflected as financing cash flows within our Consolidated Statements of Cash Flows. Iron Mountain Information Management, LLC ("IMIM") retains the responsibility of servicing the accounts receivable balances pledged as collateral in this transaction and IMI provides a performance guaranty. The Accounts Receivable Securitization Program terminates on March 6, 2018, at which point all obligations become due. The maximum availability allowed is limited by eligible accounts receivable, as defined under the terms of the Accounts Receivable Securitization Program. As of March 31, 2017, the maximum availability allowed and amount outstanding under the Accounts Receivable Securitization Program was $250,000. The interest rate in effect under the Accounts Receivable Securitization Program was 1.9% as of March 31, 2017.

d. Mortgage Securitization Program

In October 2016, we entered into a $50,000 mortgage securitization program (the "Mortgage Securitization Program") involving certain of our wholly owned subsidiaries with Goldman Sachs Mortgage Company (“Goldman Sachs”). Under the Mortgage Securitization Program, IMIM contributed certain real estate assets to its wholly owned special purpose entity, Iron Mountain Mortgage Finance I, LLC (the "Mortgage Securitization Special Purpose Subsidiary"). The Mortgage Securitization Special Purpose Subsidiary then used the real estate to secure a collateralized loan obtained from Goldman Sachs. The Mortgage Securitization Special Purpose Subsidiary is a consolidated subsidiary of IMI. The Mortgage Securitization Program is accounted for as a collateralized financing activity, rather than a sale of assets and therefore: (i) real estate assets pledged as collateral remain as assets and borrowings are presented as liabilities on our Consolidated Balance Sheets, (ii) our Consolidated Statement of Operations reflects the associated charges for depreciation expense related to the pledged real estate and interest expense associated with the collateralized borrowings and (iii) borrowings and repayments under the collateralized loans are reflected as financing cash flows within our Consolidated Statement of Cash Flows. The Mortgage Securitization Program is scheduled to terminate on November 6, 2026, at which point all obligations become due. As of March 31, 2017, the outstanding amount under the Mortgage Securitization Program was $50,000. The interest rate in effect under the Mortgage Securitization Program was 3.5% as of March 31, 2017.

e. Cash Pooling

Certain of our subsidiaries participate in cash pooling arrangements (the “Cash Pools”) with Bank Mendes Gans (“BMG”), an independently operated fully-owned subsidiary of ING Group, in order to help manage global liquidity requirements. Under the Cash Pools, cash deposited by participating subsidiaries with BMG is pledged as security against the drawings of other participating subsidiaries, and legal rights of offset are provided and, therefore, amounts are presented in our Consolidated Balance Sheets on a net basis. Each subsidiary receives interest on the cash balances held on deposit or pays interest on the amounts owed based on an applicable rate as defined in the Cash Pools. At December 31, 2016, we had a net cash position of approximately $1,700 (which consisted of a gross cash position of approximately $69,500 less outstanding borrowings of approximately $67,800 by participating subsidiaries).

During the first quarter of 2017, we significantly expanded our utilization of the Cash Pools and reduced our utilization of our financing centers in Europe for purposes of meeting our global liquidity requirements. As of March 31, 2017, we utilize two separate cash pools with BMG, one of which we utilize to manage global liquidity requirements for our QRSs (the "QRS Cash Pool") and one pool for our TRSs (the "TRS Cash Pool"). As of March 31, 2017, we had a net cash position of approximately $5,400 in the QRS Cash Pool (which consisted of a gross cash position of approximately $478,200 less outstanding borrowings of approximately $472,800 by participating subsidiaries) and we had a net cash position of approximately $11,100 in the TRS Cash Pool (which consisted of a gross cash position of approximately $217,300 less outstanding borrowings of approximately $206,200 by participating subsidiaries). The net cash position balances as of December 31, 2016 and March 31, 2017, respectively, are reflected as cash and cash equivalents in the Consolidated Balance Sheets.

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Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors

3 Months Ended

Mar. 31, 2017

Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors

Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors

The following data summarizes the consolidating results of IMI on the equity method of accounting as of December 31, 2016 and March 31, 2017 and for the three months ended March 31, 2016 and 2017 and are prepared on the same basis as the consolidated financial statements.

The Parent Notes, CAD Notes, GBP Notes and the 5³/₈% Notes are guaranteed by the direct and indirect 100% owned United States subsidiaries of IMI, that represent the substantial majority of our United States operations (the "Guarantors"). The guarantees are full and unconditional, as well as joint and several.

Additionally, IMI guarantees the CAD Notes, which were issued by Canada Company, the GBP Notes, which were issued by Iron Mountain Europe PLC ("IME"), and the 5³/₈% Notes, which were issued by Iron Mountain US Holdings, Inc. which is one of the Guarantors. Canada Company and IME do not guarantee the Parent Notes. The subsidiaries that do not guarantee the Parent Notes, the CAD Notes, the GBP Notes and the 5³/₈% Notes, including IME, the Accounts Receivable Securitization Special Purpose Subsidiaries and the Mortgage Securitization Special Purpose Subsidiary, but excluding Canada Company, are referred to below as the "Non-Guarantors".

In the normal course of business, we periodically change the ownership structure of our subsidiaries to meet the requirements of our business. In the event of such changes, we recast the prior period financial information within this footnote to conform to the current period presentation in the period such changes occur. Generally, these changes do not alter the designation of the underlying subsidiaries as Guarantors or Non-Guarantors. However, they may change whether the underlying subsidiary is owned by the Parent, a Guarantor, Canada Company or a Non-Guarantor. If such a change occurs, the amount of investment in subsidiaries in the below Consolidated Balance Sheets and equity in the earnings (losses) of subsidiaries, net of tax in the below Consolidated Statements of Operations and Comprehensive Income (Loss) with respect to the relevant Parent, Guarantors, Canada Company, Non-Guarantors and Eliminations columns also would change.

In July 2016, certain Non-Guarantor subsidiaries which were originally established at the time of our acquisition of Crozier Fine Arts in December 2015 (the “Crozier Entities”), were merged into IMIM, a Guarantor and a substantive operating entity (the “Crozier Merger”). As a result of the Crozier Merger, we have recast the accompanying Consolidated Statement of Operations and Comprehensive Income (Loss) for the three months ended March 31, 2016 and the Consolidated Statement of Cash Flows for the three months ended March 31, 2016 to conform to the current period presentation of the Crozier Entities.

CONSOLIDATED BALANCE SHEETS

	December 31, 2016
	Parent		Guarantors		Canada Company		Non- Guarantors		Eliminations			Consolidated
Assets
Current Assets:
Cash and Cash Equivalents:	$	2,405	$	23,380	$	17,110	$	193,589	$	—		$	236,484
Accounts receivable	—		53,364		37,781		600,104		—			691,249
Intercompany receivable	—		653,008		21,114		—		(674,122		)	—
Prepaid expenses and other	—		70,660		4,967		108,776		(29		)	184,374
Total Current Assets	2,405		800,412		80,972		902,469		(674,151		)	1,112,107
Property, Plant and Equipment, Net	483		1,804,991		159,391		1,118,461		—			3,083,326
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	4,014,330		1,000		—		—		(4,015,330		)	—
Investment in subsidiaries	1,659,518		699,411		35,504		77,449		(2,471,882		)	—
Goodwill	—		2,602,784		217,422		1,084,815		—			3,905,021
Other	—		765,698		49,570		571,078		—			1,386,346
Total Other Assets, Net	5,673,848		4,068,893		302,496		1,733,342		(6,487,212		)	5,291,367
Total Assets	$	5,676,736	$	6,674,296	$	542,859	$	3,754,272	$	(7,161,363	)	$	9,486,800
Liabilities and Equity
Intercompany Payable	$	558,492	$	—	$	—	$	115,630	$	(674,122	)	$	—
Current Portion of Long-Term Debt	—		51,456		—		121,548		(29		)	172,975
Total Other Current Liabilities	58,478		488,194		40,442		286,468		—			873,582
Long-Term Debt, Net of Current Portion	3,093,388		1,055,642		335,410		1,593,766		—			6,078,206
Long-Term Notes Payable to Affiliates and Intercompany Payable	1,000		4,014,330		—		—		(4,015,330		)	—
Other Long-term Liabilities	—		127,715		54,054		188,900		—			370,669
Commitments and Contingencies (See Note 8)
Redeemable Noncontrolling Interests	28,831		—		—		25,866		—			54,697
Total Iron Mountain Incorporated Stockholders' Equity	1,936,547		936,959		112,953		1,421,970		(2,471,882		)	1,936,547
Noncontrolling Interests	—		—		—		124		—			124
Total Equity	1,936,547		936,959		112,953		1,422,094		(2,471,882		)	1,936,671
Total Liabilities and Equity	$	5,676,736	$	6,674,296	$	542,859	$	3,754,272	$	(7,161,363	)	$	9,486,800

CONSOLIDATED BALANCE SHEETS (Continued)

	March 31, 2017
	Parent		Guarantors		Canada Company		Non- Guarantors		Eliminations			Consolidated
Assets
Current Assets:
Cash and cash equivalents(1)	$	470	$	64,550	$	5,763	$	410,667	$	(185,822	)	$	295,628
Accounts receivable	—		36,545		36,215		648,270		—			721,030
Intercompany receivable	—		904,316		33,923		—		(938,239		)	—
Prepaid expenses and other	114		79,337		6,325		96,232		(29		)	181,979
Total Current Assets	584		1,084,748		82,226		1,155,169		(1,124,090		)	1,198,637
Property, Plant and Equipment, Net	438		1,810,787		157,814		1,142,701		—			3,111,740
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	4,214,179		1,000		—		—		(4,215,179		)	—
Investment in subsidiaries	1,750,210		785,770		35,948		85,456		(2,657,384		)	—
Goodwill	—		2,584,712		217,837		1,154,509		—			3,957,058
Other	—		762,098		49,211		593,390		—			1,404,699
Total Other Assets, Net	5,964,389		4,133,580		302,996		1,833,355		(6,872,563		)	5,361,757
Total Assets	$	5,965,411	$	7,029,115	$	543,036	$	4,131,225	$	(7,996,653	)	$	9,672,134
Liabilities and Equity
Intercompany Payable	$	698,066	$	—	$	—	$	240,173	$	(938,239	)	$	—
Borrowings under cash pools	—		138,693		—		47,129		(185,822		)	—
Current Portion of Long-Term Debt	—		45,837		—		375,419		(29		)	421,227
Total Other Current Liabilities	199,038		454,823		41,747		301,634		—			997,242
Long-Term Debt, Net of Current Portion	3,159,864		1,014,038		338,456		1,410,390		—			5,922,748
Long-Term Notes Payable to Affiliates and Intercompany Payable	1,000		4,214,179		—		—		(4,215,179		)	—
Other Long-term Liabilities	—		138,228		41,429		180,178		—			359,835
Commitments and Contingencies (See Note 8)
Redeemable Noncontrolling Interests	4,718		—		—		62,590		—			67,308
Total Iron Mountain Incorporated Stockholders' Equity	1,902,725		1,023,317		121,404		1,512,663		(2,657,384		)	1,902,725
Noncontrolling Interests	—		—		—		1,049		—			1,049
Total Equity	1,902,725		1,023,317		121,404		1,513,712		(2,657,384		)	1,903,774
Total Liabilities and Equity	$	5,965,411	$	7,029,115	$	543,036	$	4,131,225	$	(7,996,653	)	$	9,672,134

______________________________________________________________

(1) Included within Cash and Cash Equivalents at March 31, 2017 is approximately $58,200 and $144,100 of cash on deposit associated with our Cash Pools for the Guarantor and Non-Guarantors, respectively. See Note 5 for more information on our Cash Pools.

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)

	Three Months Ended March 31, 2016
	Parent			Guarantors			Canada Company			Non- Guarantors			Eliminations			Consolidated
Revenues:
Storage rental	$	—		$	313,619		$	27,605		$	119,987		$	—		$	461,211
Service	—			188,908			14,642			85,929			—			289,479
Intercompany revenues	—			1,013			—			17,345			(18,358		)	—
Total Revenues	—			503,540			42,247			223,261			(18,358		)	750,690
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	—			208,154			6,790			111,161			—			326,105
Selling, general and administrative	72			150,019			3,373			54,302			—			207,766
Intercompany cost of sales	—			3,354			13,991			1,013			(18,358		)	—
Depreciation and amortization	45			56,926			3,079			27,154			—			87,204
(Gain) Loss on disposal/write-down of property, plant and equipment (excluding real estate), net	—			(570		)	6			113			—			(451		)
Total Operating Expenses	117			417,883			27,239			193,743			(18,358		)	620,624
Operating (Loss) Income	(117		)	85,657			15,008			29,518			—			130,066
Interest Expense (Income), Net	39,984			(8,509		)	10,034			25,553			—			67,062
Other Expense (Income), Net	886			3,456			(20		)	(16,259		)	—			(11,937		)
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(40,987		)	90,710			4,994			20,224			—			74,941
Provision (Benefit) for Income Taxes	—			9,070			1,866			964			—			11,900
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(103,761		)	(22,374		)	(1,371		)	(3,128		)	130,634			—
Net Income (Loss)	62,774			104,014			4,499			22,388			(130,634		)	63,041
Less: Net Income (Loss) Attributable to Noncontrolling Interests	—			—			—			267			—			267
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	62,774		$	104,014		$	4,499		$	22,121		$	(130,634	)	$	62,774
Net Income (Loss)	$	62,774		$	104,014		$	4,499		$	22,388		$	(130,634	)	$	63,041
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	(1,342		)	—			1,789			23,531			—			23,978
Market Value Adjustments for Securities	—			(734		)	—			—			—			(734		)
Equity in Other Comprehensive Income (Loss) of Subsidiaries	24,099			24,099			661			1,789			(50,648		)	—
Total Other Comprehensive Income (Loss)	22,757			23,365			2,450			25,320			(50,648		)	23,244
Comprehensive Income (Loss)	85,531			127,379			6,949			47,708			(181,282		)	86,285
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	—			—			—			754			—			754
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	85,531		$	127,379		$	6,949		$	46,954		$	(181,282	)	$	85,531

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued)

	Three Months Ended March 31, 2017
	Parent			Guarantors			Canada Company			Non- Guarantors			Eliminations			Consolidated
Revenues:
Storage rental	$	—		$	349,351		$	32,006		$	190,922		$	—		$	572,279
Service	—			218,209			16,050			132,338			—			366,597
Intercompany revenues	—			1,097			—			22,342			(23,439		)	—
Total Revenues	—			568,657			48,056			345,602			(23,439		)	938,876
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	—			239,329			7,550			179,828			—			426,707
Selling, general and administrative	79			162,705			3,561			73,821			—			240,166
Intercompany cost of sales	—			6,606			15,736			1,097			(23,439		)	—
Depreciation and amortization	46			76,161			4,238			44,262			—			124,707
(Gain) Loss on disposal/write-down of property, plant and equipment (excluding real estate), net	—			(548		)	2			87			—			(459		)
Total Operating Expenses	125			484,253			31,087			299,095			(23,439		)	791,121
Operating (Loss) Income	(125		)	84,404			16,969			46,507			—			147,755
Interest Expense (Income), Net	42,784			(3,279		)	11,670			34,880			—			86,055
Other Expense (Income), Net	81			2,519			(27		)	(8,937		)	—			(6,364		)
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(42,990		)	85,164			5,326			20,564			—			68,064
Provision (Benefit) for Income Taxes	—			12,744			(3,488		)	(36		)	—			9,220
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(101,115		)	(23,413		)	(157		)	(8,814		)	133,499			—
Income (Loss) from Continuing Operations	58,125			95,833			8,971			29,414			(133,499		)	58,844
Income (Loss) from Discontinued Operations, Net of Tax	—			198			—			(535		)	—			(337		)
Net Income (Loss)	58,125			96,031			8,971			28,879			(133,499		)	58,507
Less: Net Income (Loss) Attributable to Noncontrolling Interests	—			—			—			382			—			382
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	58,125		$	96,031		$	8,971		$	28,497		$	(133,499	)	$	58,125
Net Income (Loss)	$	58,125		$	96,031		$	8,971		$	28,879		$	(133,499	)	$	58,507
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	(1,072		)	—			635			51,221			—			50,784
Equity in Other Comprehensive Income (Loss) of Subsidiaries	52,406			28,540			287			635			(81,868		)	—
Total Other Comprehensive Income (Loss)	51,334			28,540			922			51,856			(81,868		)	50,784
Comprehensive Income (Loss)	109,459			124,571			9,893			80,735			(215,367		)	109,291
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	—			—			—			(168		)	—			(168		)
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	109,459		$	124,571		$	9,893		$	80,903		$	(215,367	)	$	109,459

CONSOLIDATED STATEMENTS OF CASH FLOWS

	Three Months Ended March 31, 2016
	Parent			Guarantors			Canada Company			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Cash Flows from Operating Activities	$	(48,737	)	$	121,636		$	6,477		$	1,742		$	—		$	81,118
Cash Flows from Investing Activities:
Capital expenditures	—			(61,886		)	(1,007		)	(17,959		)	—			(80,852		)
Cash paid for acquisitions, net of cash acquired	—			—			130			(19,470		)	—			(19,340		)
Intercompany loans to subsidiaries	166,442			31,987			—			—			(198,429		)	—
Investment in subsidiaries	(1,585		)	(1,585		)	—			—			3,170			—
Acquisitions of customer relationships and customer inducements	—			(4,733		)	—			(2,525		)	—			(7,258		)
Proceeds from sales of property and equipment and other, net (including real estate)	—			50			—			119			—			169
Cash Flows from Investing Activities	164,857			(36,167		)	(877		)	(39,835		)	(195,259		)	(107,281		)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(8,463		)	(1,422,545		)	(383,896		)	(569,311		)	—			(2,384,215		)
Proceeds from revolving credit and term loan facilities and other debt	—			1,500,499			370,816			638,530			—			2,509,845
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	—			—			—			885			—			885
Intercompany loans from parent	—			(167,514		)	(1,111		)	(29,804		)	198,429			—
Equity contribution from parent	—			1,585			—			1,585			(3,170		)	—
Parent cash dividends	(104,931		)	—			—			—			—			(104,931		)
Net (payments) proceeds associated with employee stock-based awards	(1,975		)	—			—			—			—			(1,975		)
Excess tax (deficiency) benefit from stock-based compensation	(348		)	—			—			—			—			(348		)
Cash Flows from Financing Activities	(115,717		)	(87,975		)	(14,191		)	41,885			195,259			19,261
Effect of exchange rates on cash and cash equivalents	—			—			(608		)	(2,926		)	—			(3,534		)
Increase (Decrease) in cash and cash equivalents	403			(2,506		)	(9,199		)	866			—			(10,436		)
Cash and cash equivalents, beginning of period	151			7,803			13,182			107,245			—			128,381
Cash and cash equivalents, end of period	$	554		$	5,297		$	3,983		$	108,111		$	—		$	117,945

CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)

	Three Months Ended March 31, 2017
	Parent			Guarantors			Canada Company			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	$	(41,288	)	$	136,411		$	5,291		$	21,760		$	—		$	122,174
Cash Flows from Operating Activities—Discontinued Operations	—			198			(535		)	—			—			(337		)
Cash Flows from Operating Activities	(41,288		)	136,609			4,756			21,760			—			121,837
Cash Flows from Investing Activities:
Capital expenditures	—			(53,175		)	(2,555		)	(17,472		)	—			(73,202		)
Cash paid for acquisitions, net of cash acquired	—			(6,380		)	—			(5,807		)	—			(12,187		)
Intercompany loans to subsidiaries	(1,187		)	(72,807		)	—			(478		)	74,472			—
Investment in subsidiaries	(16,170		)	—			—			—			16,170			—
Acquisitions of customer relationships and customer inducements	—			(20,653		)	(271		)	(479		)	—			(21,403		)
Net proceeds from Iron Mountain Divestments (see Note 10)	—			—			—			2,423			—			2,423
Proceeds from sales of property and equipment and other, net (including real estate)	—			93			2			(29		)	—			66
Cash Flows from Investing Activities—Continuing Operations	(17,357		)	(152,922		)	(2,824		)	(21,842		)	90,642			(104,303		)
Cash Flows from Investing Activities—Discontinued Operations	—			—			—			—			—			—
Cash Flows from Investing Activities	(17,357		)	(152,922		)	(2,824		)	(21,842		)	90,642			(104,303		)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(31,733		)	(1,495,558		)	(71		)	(1,154,986		)	—			(2,682,348		)
Proceeds from revolving credit and term loan facilities and other debt	94,811			1,423,653			—			1,196,319			—			2,714,783
Borrowings (payments) under cash pools	—			138,693			—			47,129			(185,822		)	—
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	—			—			—			10,668			—			10,668
Intercompany loans from parent	—			(9,305		)	(12,680		)	96,457			(74,472		)	—
Equity contribution from parent	—			—			—			16,170			(16,170		)	—
Parent cash dividends	(2,060		)	—			—			—			—			(2,060		)
Net payments associated with employee stock-based awards	(4,308		)	—			—			—			—			(4,308		)
Payment of debt financing and stock issuance costs	—			—			(73		)	—			—			(73		)
Cash Flows from Financing Activities—Continuing Operations	56,710			57,483			(12,824		)	211,757			(276,464		)	36,662
Cash Flows from Financing Activities—Discontinued Operations	—			—			—			—			—			—
Cash Flows from Financing Activities	56,710			57,483			(12,824		)	211,757			(276,464		)	36,662
Effect of exchange rates on cash and cash equivalents	—			—			(455		)	5,403			—			4,948
(Decrease) Increase in cash and cash equivalents	(1,935		)	41,170			(11,347		)	217,078			(185,822		)	59,144
Cash and cash equivalents, beginning of period	2,405			23,380			17,110			193,589			—			236,484
Cash and cash equivalents, end of period	$	470		$	64,550		$	5,763		$	410,667		$	(185,822	)	$	295,628

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Segment Information

3 Months Ended

Mar. 31, 2017

Segment Reporting [Abstract]

Segment Information

Our five reportable operating segments as of December 31, 2016 are described in Note 9 to Notes to Consolidated Financial Statements included in our Annual Report and are as follows:

• North American Records and Information Management Business

• North American Data Management Business

• Western European Business

• Other International Business

• Corporate and Other Business

There have been no changes made to our reportable operating segments since December 31, 2016. The operations associated with acquisitions completed during the first three months of 2017 (which are described in Note 4) have been incorporated into our existing reportable operating segments.

An analysis of our business segment information and reconciliation to the accompanying Consolidated Financial Statements is as follows:

	North American Records and Information Management Business			North American Data Management Business		Western European Business		Other International Business		Corporate and Other Business			Total Consolidated
For the Three Months Ended March 31, 2016
Total Revenues	$	444,681		$	96,343	$	93,876	$	101,341	$	14,449		$	750,690
Depreciation and Amortization	45,350			5,670		11,251		14,286		10,647			87,204
Depreciation	40,255			5,422		8,671		10,902		10,140			75,390
Amortization	5,095			248		2,580		3,384		507			11,814
Adjusted EBITDA	176,557			53,460		31,946		21,576		(48,393		)	235,146
Expenditures for Segment Assets	46,666			4,827		6,060		32,156		17,741			107,450
Capital Expenditures	42,088			4,827		4,059		12,162		17,716			80,852
Cash (Received) Paid for Acquisitions, Net of Cash Acquired	(130		)	—		—		19,470		—			19,340
Acquisitions of Customer Relationships and Customer Inducements	4,708			—		2,001		524		25			7,258
For the Three Months Ended March 31, 2017
Total Revenues	507,597			106,950		120,072		189,241		15,016			938,876
Depreciation and Amortization	60,535			8,933		14,297		27,676		13,266			124,707
Depreciation	51,952			6,673		10,888		19,305		10,774			99,592
Amortization	8,583			2,260		3,409		8,371		2,492			25,115
Adjusted EBITDA	209,530			55,912		34,142		55,347		(62,357		)	292,574
Expenditures for Segment Assets	51,888			8,737		5,025		18,620		22,522			106,792
Capital Expenditures	26,578			8,737		4,898		12,467		20,522			73,202
Cash Paid (Received) for Acquisitions, Net of Cash Acquired	4,379			—		—		5,808		2,000			12,187
Acquisitions of Customer Relationships and Customer Inducements	20,931			—		127		345		—			21,403

The accounting policies of the reportable segments are the same as those described in Note 2 and in our Annual Report. Adjusted EBITDA for each segment is defined as income (loss) from continuing operations before interest expense, net, provision (benefit) for income taxes, depreciation and amortization, and also excludes certain items that we believe are not indicative of our core operating results, specifically: (i) (gain) loss on disposal/write-down of property, plant and equipment (excluding real estate), net; (ii) intangible impairments; (iii) other (income) expense, net; (iv) gain on sale of real estate, net of tax; and (v) Recall Costs (as defined below). Internally, we use Adjusted EBITDA as the basis for evaluating the performance of, and allocating resources to, our operating segments.

A reconciliation of Adjusted EBITDA to income (loss) from continuing operations on a consolidated basis is as follows:

	Three Months Ended March 31,
	2016			2017
Adjusted EBITDA	$	235,146		$	292,574
(Add)/Deduct:
(Gain) Loss on Disposal/Write-Down of Property, Plant and Equipment (Excluding Real Estate), Net	(451		)	(459		)
Provision (Benefit) for Income Taxes	11,900			9,220
Other (Income) Expense, Net	(11,937		)	(6,364		)
Interest Expense, Net	67,062			86,055
Depreciation and Amortization	87,204			124,707
Recall Costs(1)	18,327			20,571
Income (Loss) from Continuing Operations	$	63,041		$	58,844

_______________________________________________________________________________

(1) Represents operating expenditures to complete the Recall Transaction, including advisory and professional fees and costs to complete the Divestments required in connection with receipt of regulatory approval, including transitional services required to support the divested businesses during a transition period and operating expenditures to integrate Recall with our existing operations, including moving, severance, facility upgrade, REIT conversion and system upgrade costs ("Recall Costs").

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

a.    Litigation—General

We are involved in litigation from time to time in the ordinary course of business. A portion of the defense and/or

settlement costs associated with such litigation is covered by various commercial liability insurance policies purchased by us

and, in limited cases, indemnification from third parties. Our policy is to establish reserves for loss contingencies when the

losses are both probable and reasonably able to be estimated. We record legal costs associated with loss contingencies as expenses in the period in which they are incurred. The matters described below represent our significant loss contingencies. We have evaluated each matter and, if both probable and reasonably able to be estimated, accrued an amount that represents our estimate of any probable loss associated with such matter. In addition, we have estimated a reasonably possible range for all loss contingencies including those described below. We believe it is reasonably possible that we could incur aggregate losses in addition to amounts currently accrued for all matters up to an additional $20,000 over the next several years, of which certain amounts would be covered by insurance or indemnity arrangements.

b. Italy Fire

On November 4, 2011, we experienced a fire at a facility we leased in Aprilia, Italy. The facility primarily stored archival and inactive business records for local area businesses. Despite quick response by local fire authorities, damage to the building was extensive, and the building and its contents were a total loss. We have been sued by five customers. Four of those lawsuits have been settled and one, a claim asserted by Azienda per i Transporti Autoferrotranviari del Comune di Roma, S.p.A, seeking 42,600 Euros for the loss of its current and historical archives, remains pending. We have also received correspondence from other affected customers, including certain customers demanding payment under various theories of liability. Although our warehouse legal liability insurer has reserved its rights to contest coverage related to certain types of potential claims, we believe we carry adequate insurance. We deny any liability with respect to the fire and we have referred these claims to our warehouse legal liability insurer for an appropriate response. We do not expect that this event will have a material impact on our consolidated financial condition, results of operations or cash flows. We sold our Italian operations on April 27, 2012, and we indemnified the buyers related to certain obligations and contingencies associated with the fire. As a result of the sale of the Italian operations, any future statement of operations and cash flow impacts related to the fire will be reflected as discontinued operations.

c. Argentina Fire

On February 5, 2014, we experienced a fire at a facility we own in Buenos Aires, Argentina. As a result of the quick response by local fire authorities, the fire was contained before the entire facility was destroyed and all employees were safely evacuated; however, a number of first responders lost their lives, or in some cases, were severely injured. The cause of the fire is currently being investigated. We believe we carry adequate insurance and do not expect that this event will have a material impact to our consolidated financial condition, results of operations or cash flows. Revenues from our operations at this facility represent less than 0.5% of our consolidated revenues.

d. Brooklyn Fire (Recall)

On January 31, 2015, a former Recall leased facility located in Brooklyn, New York was completely destroyed by a fire. Approximately 900,000 cartons of customer records were lost impacting approximately 1,200 customers. No one was injured as a result of the fire. We believe we carry adequate insurance to cover any losses resulting from the fire. There are three pending customer-related lawsuits stemming from the fire, which are being defended by our warehouse legal liability insurer. We have also received correspondence from other customers, under various theories of liability. We deny any liability with respect to the fire and we have referred these claims to our insurer for an appropriate response. We do not expect that this event will have a material impact on our consolidated financial condition, results of operations or cash flows.

e. Roye Fire (Recall)

On January 28, 2002, a former leased Recall records management facility located in Roye, France was destroyed by a fire.

Local French authorities conducted an investigation relating to the fire and issued a charge of criminal negligence for non-compliance with security regulations against the Recall entity that leased the facility. We intend to defend this matter

vigorously. We are currently corresponding with various customers impacted by the fire who are seeking payment under various

theories of liability. There is also pending civil litigation with the owner of the destroyed facility, who is demanding payment

for lost rental income and other items. Based on known and expected claims and our expectation of the ultimate outcome of

those claims, we believe we carry adequate insurance coverage. We do not expect that this event will have a material impact on

our consolidated financial condition, results of operations or cash flows.

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Stockholders' Equity Matters

3 Months Ended

Mar. 31, 2017

Equity [Abstract]

Stockholders' Equity Matters

Our board of directors has adopted a dividend policy under which we have paid, and in the future intend to pay, quarterly cash dividends on our common stock. The amount and timing of future dividends will continue to be subject to the approval of our board of directors, in its sole discretion, and to applicable legal requirements.

In fiscal year 2016 and in the first three months of 2017, our board of directors declared the following dividends:

Declaration Date	Dividend Per Share	Record Date	Total Amount		Payment Date
February 17, 2016	0.4850	March 7, 2016	$	102,651	March 21, 2016
May 25, 2016	0.4850	June 6, 2016	127,469		June 24, 2016
July 27, 2016	0.4850	September 12, 2016	127,737		September 30, 2016
October 31, 2016	0.5500	December 15, 2016	145,006		December 30, 2016
February 15, 2017	0.5500	March 15, 2017	145,235		April 3, 2017

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Divestments

3 Months Ended

Mar. 31, 2017

Discontinued Operations and Disposal Groups [Abstract]

Divestments

As disclosed in Note 4, in connection with the acquisition of Recall, we sought regulatory approval of the Recall Transaction from the DOJ, the ACCC, the CCB and the CMA and, as part of the regulatory approval process, we agreed to make the Divestments.

On May 4, 2016, we completed the sale of the Initial United States Divestments to Access CIG, LLC, a privately held provider of information management services throughout the United States (“Access CIG”), for total consideration of approximately $80,000, subject to adjustments (the “Access Sale”). Of the total consideration, we received $55,000 in cash proceeds upon closing of the Access Sale, and we are entitled to receive up to $25,000 of additional cash proceeds on the 27-month anniversary of the closing of the Access Sale (the "Access Contingent Consideration"). Our estimate of the fair value of the Access Contingent Consideration is approximately $21,400 (which reflects a fair value adjustment of approximately $2,200 and a present value adjustment of approximately $1,400). We have a non-trade receivable amounting to $22,000 included in Other, a component of Other Assets, Net in our Consolidated Balance Sheet as of March 31, 2017 related to the Access Contingent Consideration.

On December 29, 2016, we completed the sale of the Seattle/Atlanta Divestments, the Recall Canadian Divestments and the Iron Mountain Canadian Divestments to ARKIVE, Inc., an information management company (“ARKIVE”), for total consideration of approximately $50,000, subject to adjustments (the “ARKIVE Sale”). Of the total consideration, we received approximately $45,000 in cash proceeds upon the closing of the ARKIVE Sale and the remaining consideration is held in escrow. ARKIVE may be entitled to receive from us, on the 24-month anniversary of the closing of the ARKIVE Sale, cash payments, up to the total consideration paid by ARKIVE, based on lost revenues attributable to the acquired customer base.

On October 31, 2016, after receiving approval of the proposed transaction from the ACCC, we completed the sale of the Australia Divestment Business (the “Australia Sale”) to a consortium led by Housatonic Partners (the “Australia Divestment Business Purchasers”) for total consideration of approximately 70,000 Australian dollars (or approximately $53,200, based upon the exchange rate between the United States dollar and the Australian dollar as of October 31, 2016, the closing date of the Australia Sale), subject to adjustments. The total consideration consists of (i) 35,000 Australian dollars in cash received upon the closing of the Australia Sale and (ii) 35,000 Australian dollars in the form of a note due from the Australia Divestment Business Purchasers to us (the “Bridging Loan Note”). The Bridging Loan Note bears interest at 3.3% per annum and matures on December 29, 2017, at which point all outstanding obligations become due. The total consideration for the Australia Sale is subject to certain adjustments, including ones associated with customer attrition, subsequent to the closing of the Australia Sale.

On December 9, 2016, we completed the sale of the UK Divestments (the "UK Sale") to the Oasis Group for total consideration of approximately 1,800 British pounds sterling (or approximately $2,200, based upon the exchange rate between the United States dollar and the British pound sterling as of December 9, 2016, the closing date of the UK Sale), subject to adjustments.

We have concluded that the Australian Divestment Business and the Iron Mountain Canadian Divestments (collectively, the “Iron Mountain Divestments”) do not meet the criteria to be reported as discontinued operations as our decision to divest these businesses did not represent a strategic shift that had a major effect on our operations and financial results. Accordingly, the revenues and expenses associated with the Iron Mountain Divestments are presented as a component of income (loss) from continuing operations in our Consolidated Statement of Operations for the three months ended March 31, 2016 and the cash flows associated with the Iron Mountain Divestments are presented as a component of cash flows from continuing operations in our Consolidated Statement of Cash Flows for the three months ended March 31, 2016.

We have concluded that the Initial United States Divestments, the Seattle/Atlanta Divestments, the Recall Canadian Divestments and the UK Divestments (collectively, the “Recall Divestments”) meet the criteria to be reported as discontinued operations in our Consolidated Statement of Operations and Consolidated Statement of Cash Flows as the Recall Divestments met the criteria to be reported as assets and liabilities held for sale at, or within a short period of time following, the closing of the Recall Transaction.

The table below summarizes certain results of operations of the Recall Divestments:

	Three Months Ended March 31, 2017
Description	Initial United States Divestments		Seattle/Atlanta Divestments			Recall Canadian Divestments			UK Divestments		Total(1)
Income (Loss) from Discontinued Operations Before Provision (Benefit) for Income Taxes	$	—	$	239		$	(668	)	$	—	$	(429	)
Provision (Benefit) for Income Taxes	—		41		—	(133		)	—		(92		)
Income (Loss) from Discontinued Operations, Net of Tax	$	—	$	198		$	(535	)	$	—	$	(337	)

_____________________________________________________________________________

(1) During the three months ended March 31, 2017, we recognized a loss from discontinued operations before benefit for income taxes of $429, primarily related to costs associated with transitional service agreements related to the Recall Divestments.

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Recall Costs (Notes)

3 Months Ended

Mar. 31, 2017

Business Combinations [Abstract]

Recall Costs

Recall Costs included in the accompanying Consolidated Statements of Operations are as follows:

	Three Months Ended March 31,
	2016		2017
Cost of sales (excluding depreciation and amortization)	$	—	$	7,887
Selling, general and administrative expenses	18,327		12,684
Total Recall Costs	$	18,327	$	20,571

Recall Costs included in the accompanying Consolidated Statements of Operations by segment are as follows:

	Three Months Ended March 31,
	2016		2017
North American Records and Information Management Business	$	39	$	7,299
North American Data Management Business	—		873
Western European Business	217		3,216
Other International Business	431		1,651
Corporate and Other Business	17,640		7,532
Total Recall Costs	$	18,327	$	20,571

A rollforward of accrued liabilities related to Recall Costs on our Consolidated Balance Sheets as of December 31, 2016 to March 31, 2017 is as follows:

	Accrual for Recall Costs
Balance at December 31, 2016	$	4,914
Amounts accrued	5,147
Change in estimates(1)	(230		)
Payments	(5,371		)
Currency translation adjustments	47
Balance at March 31, 2017(2)	$	4,507

_______________________________________________________________________________

(1) Includes adjustments made to amounts accrued in a prior period.

(2) Accrued liabilities related to Recall Costs as of March 31, 2017 presented in the table above generally related to employee severance costs and onerous lease liabilities. We expect that the majority of these liabilities will be paid throughout 2017. Additional Recall Costs recorded in our Consolidated Statement of Operations have either been settled in cash during the three months ended March 31, 2017 or are included in our Consolidated Balance Sheet as of March 31, 2017 as a component of accounts payable.

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

Foreign Currency

Foreign Currency

Local currencies are the functional currencies for our operations outside the United States, with the exception of certain foreign holding companies and our financing centers in Europe, whose functional currency is the United States dollar. In those instances where the local currency is the functional currency, assets and liabilities are translated at period-end exchange rates, and revenues and expenses are translated at average exchange rates for the applicable period. Resulting translation adjustments are reflected in the accumulated other comprehensive items, net component of Iron Mountain Incorporated Stockholders' Equity, Redeemable Noncontrolling Interests and Noncontrolling Interests in the accompanying Consolidated Balance Sheets. The gain or loss on foreign currency transactions, calculated as the difference between the historical exchange rate and the exchange rate at the applicable measurement date, including those related to (i) borrowings in certain foreign currencies under our Revolving Credit Facility (as defined in Note 5) and (ii) certain foreign currency denominated intercompany obligations of our foreign subsidiaries to us and between our foreign subsidiaries, which are not considered permanently invested, are included in Other (Income) Expense, Net, in the accompanying Consolidated Statements of Operations.

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets

Goodwill

Goodwill is not amortized but is reviewed annually for impairment, or more frequently if impairment indicators arise. We have selected October 1 as our annual goodwill impairment review date.

Stock-Based Compensation

Stock-Based Compensation

We record stock-based compensation expense, utilizing the straight-line method, for the cost of stock options, restricted stock units ("RSUs"), performance units ("PUs") and shares of stock issued under our employee stock purchase plan ("ESPP") (together, "Employee Stock-Based Awards").

Under our various equity compensation plans, we may also grant RSUs. Our RSUs generally have a vesting period of between three and five years from the date of grant. However, RSUs granted to our non-employee directors vest immediately upon grant.

All RSUs accrue dividend equivalents associated with the underlying stock as we declare dividends. Dividends will generally be paid to holders of RSUs in cash upon the vesting date of the associated RSU and will be forfeited if the RSU does not vest. The fair value of RSUs is the excess of the market price of our common stock at the date of grant over the purchase price (which is typically zero).

The majority of our PUs are earned based on our performance against revenue and ROIC targets during their applicable performance period; therefore, we forecast the likelihood of achieving the predefined revenue and ROIC targets in order to calculate the expected PUs to be earned. We record a compensation charge based on either the forecasted PUs to be earned (during the performance period) or the actual PUs earned (at the three-year anniversary of the grant date) over the vesting period for each of the awards. The fair value of PUs based on our performance against revenue and ROIC targets is the excess of the market price of our common stock at the date of grant over the purchase price (which is typically zero). For PUs earned based on a market condition, we utilize a Monte Carlo simulation to fair value these awards at the date of grant, and such fair value is expensed over the three-year performance period.

Under our various equity compensation plans, we may also make awards of PUs. For the majority of outstanding PUs, the number of PUs earned is determined based on our performance against predefined targets of revenue and return on invested capital ("ROIC"). The number of PUs earned may range from 0% to 200% of the initial award. The number of PUs earned is determined based on our actual performance as compared to the targets at the end of a three-year performance period. Certain PUs that we grant will be earned based on a market condition associated with the total return on our common stock in relation to either (i) a subset of the Standard & Poor's 500 Index (for certain PUs granted prior to 2017), or (ii) a subset of the MSCI United States REIT Index (for certain PUs granted in 2017), rather than the revenue and ROIC targets noted above. The number of PUs earned based on the applicable market condition may range from 0% to 200% of the initial award.

All of our PUs will be settled in shares of our common stock and are subject to cliff vesting three years from the date of the original PU grant. PUs awarded to employees who terminate their employment during the three-year performance period and on or after attaining age 55 and completing 10 years of qualifying service are eligible for pro-rated vesting, subject to the actual achievement against the predefined targets or a market condition as discussed above, based on the number of full years of service completed following the grant date (but delivery of the shares remains deferred). As a result, PUs are generally expensed over the three-year performance period.

All PUs accrue dividend equivalents associated with the underlying stock as we declare dividends. Dividends will generally be paid to holders of PUs in cash upon the settlement date of the associated PU and will be forfeited if the PU does not vest.

We offer an ESPP in which participation is available to substantially all United States and Canadian employees who meet certain service eligibility requirements. The price for shares purchased under the ESPP is 95% of the market price of our common stock at the end of the offering period, without a look-back feature. As a result, we do not recognize compensation expense for the ESPP shares purchased.

Income (Loss) Per Share-Basic and Diluted

Income (Loss) Per Share—Basic and Diluted

Basic income (loss) per common share is calculated by dividing income (loss) by the weighted average number of common shares outstanding. The calculation of diluted income (loss) per share is consistent with that of basic income (loss) per share but gives effect to all potential common shares (that is, securities such as stock options, RSUs or PUs) that were outstanding during the period, unless the effect is antidilutive.

Income Taxes

Income Taxes

We provide for income taxes during interim periods based on our estimate of the effective tax rate for the year. Discrete items and changes in our estimate of the annual effective tax rate are recorded in the period they occur. Our effective tax rate is subject to variability in the future due to, among other items: (1) changes in the mix of income between our qualified REIT subsidiaries ("QRSs") and our domestic taxable REIT subsidiaries ("TRSs"), as well as among the jurisdictions in which we operate; (2) tax law changes; (3) volatility in foreign exchange gains and losses; (4) the timing of the establishment and reversal of tax reserves; and (5) our ability to utilize net operating losses that we generate.

Fair Value Measurements

g.    Fair Value Measurements

Our financial assets or liabilities that are carried at fair value are required to be measured using inputs from the three levels of the fair value hierarchy. A financial asset or liability's classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

The three levels of the fair value hierarchy are as follows:

Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that we have the ability to access at the measurement date.

Level 2—Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).

Level 3—Unobservable inputs that reflect our assumptions about the assumptions that market participants would use in pricing the asset or liability.

New Accounting Pronouncements

New Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In January 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment ("ASU 2017-04"). ASU 2017-04 modifies the process by which entities will test goodwill for impairment. Under existing GAAP, when the carrying value of a reporting unit exceeds the reporting unit’s fair value, an entity would then proceed to a “Step 2” goodwill impairment analysis, which requires calculating the implied fair value of goodwill by assigning the fair value of a reporting unit to all of its assets and liabilities, as if that reporting unit had been acquired in a business combination. Under ASU 2017-04, a goodwill impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying value of the reporting unit’s goodwill. We adopted ASU 2017-04 in the first quarter of 2017 and it did not impact our consolidated financial statements.

As Yet Adopted Accounting Pronouncements

a. ASU 2014-09

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"). ASU 2014-09 provides guidance for management to reassess revenue recognition as it relates to: (1) transfer of control, (2) variable consideration, (3) allocation of transaction price based on relative standalone selling price, (4) licenses, (5) time value of money, and (6) contract costs.

ASU 2014-09 will replace the current revenue recognition criteria under GAAP, including industry-specific requirements, and provide companies with a single revenue recognition model for recognizing revenue from contracts with customers. The core principle of ASU 2014-09 is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for such goods or services. The two permitted transition methods under ASU 2014-09 are: (i) the full retrospective method, whereby ASU 2014-09 would be applied to each prior reporting period presented and the cumulative effect of adoption would be recognized at the earliest period shown, or (ii) the modified retrospective method, whereby the cumulative effect of applying ASU 2014-09 would be recognized at the date of initial application. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which deferred the effective date of ASU 2014-09 for one year, making ASU 2014-09 effective for us on January 1, 2018, with early adoption permitted as of January 1, 2017. We will adopt ASU 2014-09 as of January 1, 2018 using the modified retrospective method.

During 2015, we established a project team responsible for the assessment and implementation of ASU 2014-09. We utilized a bottoms-up approach to analyze the impact of ASU 2014-09 on our contracts with customers by reviewing our current accounting policies and practices to identify potential differences that would result from applying the requirements of ASU 2014-09 to our contracts with customers. We are currently in the process of designing and implementing appropriate changes to our business processes, systems and controls to support the accounting and the financial disclosure requirements under ASU 2014-09. We have been closely monitoring the FASB activity related to specific interpretative issues pertaining to ASU 2014-09. During the second half of 2016, we substantially completed our evaluation of the potential changes resulting from the adoption of ASU 2014-09 on our accounting and the financial disclosure requirements and are now moving into the more detailed quantification of the impacts of adopting ASU 2014-09, the more significant of which are discussed below. Based on our analysis to date, we expect that the most significant impacts associated with adopting ASU 2014-09 compared to current GAAP will relate to (i) the deferral of certain commissions on our long-term storage contracts (“Accounting for Commissions”) and (ii) certain policy changes related to initial moves of physical storage, which will be subject to new cost guidance (“Accounting for Initial Moves”).

i. Accounting for Commissions

Under current GAAP, commissions that we pay related to our long-term storage contracts are expensed as incurred. Under ASU 2014-09, however, certain commissions will be capitalized and amortized over the period of expected earned revenue. In the year of adoption, this will result in increased intangible contract assets on our Consolidated Balance Sheet, a reduction in selling, general and administrative expenses and a corresponding increase in amortization expense (assuming consistent levels of spending up through the adoption date) on our Consolidated Statement of Operations and an increase in cash flows from operating activities and a corresponding increase in cash used for investing activities on our Consolidated Statement of Cash Flows.

ii. Accounting for Initial Moves

Under current GAAP, intake costs not charged to transport boxes to one of our facilities, which include labor and transportation costs, are capitalized and amortized as a component of depreciation and amortization in our Consolidated Statements of Operations. Under ASU 2014-09, however, the revenue and costs associated with all initial moves of physical storage, regardless of whether or not the services associated with such initial moves are provided to the customer at no charge, will be deferred and recognized over the period consistent with the transfer of the service to the customer to which the asset relates. In the year of adoption, this will result in decreased intangible assets and increased deferred revenue on our Consolidated Balance Sheet, a reduction in cost of sales and a corresponding increase in amortization expense (assuming consistent levels of spending up through the adoption date) on our Consolidated Statement of Operations and an increase in cash flows from operating activities and a corresponding increase in cash used for investing activities on our Consolidated Statement of Cash Flows.

b. Other As Yet Adopted Accounting Pronouncements

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities ("ASU 2016-01"). ASU 2016-01 requires that most equity investments be measured at fair value, with subsequent changes in fair value recognized in net income. ASU 2016-01 also impacts financial liabilities under the fair value option and the presentation and disclosure requirements for financial instruments. ASU 2016-01 is effective for us on January 1, 2018. We do not believe that the adoption of ASU 2016-01 will have a material impact on our consolidated financial statements.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) ("ASU 2016-02"). ASU 2016-02 requires lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by all leases with terms of more than 12 months. ASU 2016-02 also will require certain qualitative and quantitative disclosures designed to give financial statement users information on the amount, timing, and uncertainty of cash flows arising from leases. ASU 2016-02 will be effective for us on January 1, 2019, with early adoption permitted. We will adopt ASU 2016-02 on January 1, 2019 and are currently evaluating the impact ASU 2016-02 will have on our consolidated financial statements.

In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash ("ASU 2016-18"). ASU 2016-18 provides guidance on the classification of restricted cash in the statement of cash flows. ASU 2016-18 is effective for us on January 1, 2018, with early adoption permitted and is required to be adopted on a retrospective basis. We do not believe that the adoption of ASU 2016-18 will have a material impact on our consolidated financial statements.

In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business ("ASU 2017-01"). ASU 2017-01 provides greater clarity on the definition of a business to assist entities in evaluating whether transactions should be accounted for as an acquisition or disposal of assets or businesses. ASU 2017-01 is effective for us on January 1, 2018, with early adoption permitted. We are currently evaluating the impact ASU 2017-01 will have on our consolidated financial statements.

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Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

Schedule of foreign currency gain/loss

Total (gain) loss on foreign currency transactions for the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016			2017
Total (gain) loss on foreign currency transactions	$	(12,542	)	$	(4,164	)

Schedule of changes in the carrying value of goodwill attributable to each reportable operating segment

The changes in the carrying value of goodwill attributable to each reportable operating segment for the three months ended March 31, 2017 are as follows:

	North American Records and Information Management Business		North American Data Management Business		Western European Business		Other International Business		Corporate and Other Business		Total Consolidated
Gross Balance as of December 31, 2016	$	2,485,806	$	559,443	$	405,571	$	743,126	$	25,922	$	4,219,868
Deductible goodwill acquired during the year	672		—		—		387		717		1,776
Non-deductible goodwill acquired during the year	—		—		—		4,311		—		4,311
Fair value and other adjustments(1)	5,548		525		2,818		2,802		—		11,693
Currency effects	1,569		448		4,649		27,801		—		34,467
Gross Balance as of March 31, 2017	$	2,493,595	$	560,416	$	413,038	$	778,427	$	26,639	$	4,272,115
Accumulated Amortization Balance as of December 31, 2016	$	204,895	$	53,753	$	56,150	$	49	$	—	$	314,847
Currency effects	58		15		125		12		—		210
Accumulated Amortization Balance as of March 31, 2017	$	204,953	$	53,768	$	56,275	$	61	$	—	$	315,057
Net Balance as of December 31, 2016	$	2,280,911	$	505,690	$	349,421	$	743,077	$	25,922	$	3,905,021
Net Balance as of March 31, 2017	$	2,288,642	$	506,648	$	356,763	$	778,366	$	26,639	$	3,957,058
Accumulated Goodwill Impairment Balance as of December 31, 2016	$	85,909	$	—	$	46,500	$	—	$	—	$	132,409
Accumulated Goodwill Impairment Balance as of March 31, 2017	$	85,909	$	—	$	46,500	$	—	$	—	$	132,409

_______________________________________________________________________________

(1) Total fair value and other adjustments include $11,693 in net adjustments primarily related to property, plant and equipment and customer relationship intangible assets (which represent adjustments within the applicable measurement period to provisional amounts recognized in purchase accounting)

Components of amortizable intangible assets

The components of our finite-lived intangible assets as of December 31, 2016 and March 31, 2017 are as follows:

	December 31, 2016							March 31, 2017
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer relationship intangible assets and Customer Inducements	$	1,604,020	$	(351,497	)	$	1,252,523	$	1,650,854	$	(373,925	)	$	1,276,929
Other finite-lived intangible assets (included in other assets, net)	24,788		(7,989		)	16,799		24,225		(10,478		)	13,747
Total	$	1,628,808	$	(359,486	)	$	1,269,322	$	1,675,079	$	(384,403	)	$	1,290,676

Schedule of amortization expenses

Amortization expense associated with finite-lived intangible assets and revenue reduction associated with the amortization of Permanent Withdrawal Fees for the three months ended March 31, 2016 and 2017 are as follows:

	Three Months Ended March 31,
	2016		2017
Amortization expense associated with finite-lived intangible assets	$	11,814	$	25,115
Revenue reduction associated with amortization of Permanent Withdrawal Fees	2,943		3,158

Stock-based compensation expense for Employee Stock-Based Awards related to continuing operations

Stock-based compensation expense for Employee Stock-Based Awards included in the accompanying Consolidated Statements of Operations is as follows:

	Three Months Ended March 31,
	2016		2017
Cost of sales (excluding depreciation and amortization)	$	27	$	28
Selling, general and administrative expenses	6,858		6,521
Total stock-based compensation	$	6,885	$	6,549

Summary of stock option activity

A summary of our stock options outstanding as of March 31, 2017 by vesting terms is as follows:

	March 31, 2017
	Stock Options Outstanding	% of Stock Options Outstanding
Three-year vesting period (10 year contractual life)	3,597,671	83.4	%
Five-year vesting period (10 year contractual life)	626,204	14.5	%
Ten-year vesting period (12 year contractual life)	90,754	2.1	%
	4,314,629	100.0	%

A summary of stock option activity for the three months ended March 31, 2017 is as follows:

	Stock Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Average Intrinsic Value
Outstanding at December 31, 2016	3,451,698		$	31.79
Granted	1,007,224		36.89
Exercised	(136,739	)	22.24
Forfeited	(5,773	)	28.21
Expired	(1,781	)	38.83
Outstanding at March 31, 2017	4,314,629		$	33.29	7.57	$	17,780
Options exercisable at March 31, 2017	2,126,229		$	30.09	5.84	$	15,685
Options expected to vest	2,022,212		$	36.41	9.24	$	1,955

Summary of the weighted average assumptions used for stock option grants

These values were estimated on the date of grant using the Black-Scholes option pricing model. The weighted average assumptions used for grants in the respective periods are as follows:

	Three Months Ended March 31,
Weighted Average Assumptions	2016		2017
Expected volatility	27.2	%	25.8	%
Risk-free interest rate	1.32	%	1.96	%
Expected dividend yield	7	%	6	%
Expected life	5.6 years		5.0 years

Aggregate intrinsic value of stock options exercised

The aggregate intrinsic value of stock options exercised for the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016		2017
Aggregate intrinsic value of stock options exercised	$	1,433	$	1,912

Summary of restricted stock and RSU activity

Cash dividends accrued and paid on RSUs for the three months ended March 31, 2016 and 2017 are as follows:

	Three Months Ended March 31,
	2016		2017
Cash dividends accrued on RSUs	$	631	$	683
Cash dividends paid on RSUs	1,635		1,855

The fair value of RSUs vested during the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016		2017
Fair value of RSUs vested	$	14,978	$	14,026

A summary of RSU activity for the three months ended March 31, 2017 is as follows:

	RSUs		Weighted- Average Grant-Date Fair Value
Non-vested at December 31, 2016	1,163,393		$	33.21
Granted	525,328		36.90
Vested	(438,091	)	32.02
Forfeited	(11,597	)	34.65
Non-vested at March 31, 2017	1,239,033		$	35.18

Schedule of performance units

The fair value of earned PUs that vested during the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016		2017
Fair value of earned PUs that vested	$	4,081	$	905

Cash dividends accrued and paid on PUs for the three months ended March 31, 2016 and 2017 are as follows:

	Three Months Ended March 31,
	2016		2017
Cash dividends accrued on PUs	$	262	$	324
Cash dividends paid on PUs	645		205

Summary of Performance Unit (PU) activity

A summary of PU activity for the three months ended March 31, 2017 is as follows:

	Original PU Awards		PU Adjustment(1)		Total PU Awards		Weighted- Average Grant-Date Fair Value
Non-vested at December 31, 2016	559,340		(121,038	)	438,302		$	33.67
Granted	229,692		—		229,692		41.93
Vested	(32,776	)	—		(32,776	)	27.60
Forfeited/Performance or Market Conditions Not Achieved	(3,480	)	(129,029	)	(132,509	)	28.57
Non-vested at March 31, 2017	752,776		(250,067	)	502,709		$	39.18

_______________________________________________________________________________

(1) Represents an increase or decrease in the number of original PUs awarded based on either the final performance criteria or market condition achievement at the end of the performance period of such PUs or a change in estimated awards based on the forecasted performance against the predefined targets.

Calculation of basic and diluted net income (loss) per share attributable to the entity

The calculation of basic and diluted income (loss) per share for the three months ended March 31, 2016 and 2017 is as follows:

	Three Months Ended March 31,
	2016		2017
Income (loss) from continuing operations	$	63,041	$	58,844
Less: Net income (loss) attributable to noncontrolling interests	267		382
Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation)	$	62,774	$	58,462
(Loss) income from discontinued operations, net of tax	$	—	$	(337	)
Net income (loss) attributable to Iron Mountain Incorporated	$	62,774	$	58,125
Weighted-average shares—basic	211,526,000		263,855,000
Effect of dilutive potential stock options	482,388		461,761
Effect of dilutive potential RSUs and PUs	463,053		492,905
Weighted-average shares—diluted	212,471,441		264,809,666
Earnings (losses) per share—basic:
Income (loss) from continuing operations	$	0.30	$	0.22
(Loss) income from discontinued operations, net of tax	—		—
Net income (loss) attributable to Iron Mountain Incorporated(1)	$	0.30	$	0.22
Earnings (losses) per share—diluted:
Income (loss) from continuing operations	$	0.30	$	0.22
(Loss) income from discontinued operations, net of tax	—		—
Net income (loss) attributable to Iron Mountain Incorporated(1)	$	0.30	$	0.22
Antidilutive stock options, RSUs and PUs, excluded from the calculation	2,821,795		2,494,255

_______________________________________________________________________________

(1) Columns may not foot due to rounding.

Assets and liabilities carried at fair value measured on a recurring basis

The assets and liabilities carried at fair value measured on a recurring basis as of December 31, 2016 and March 31, 2017, respectively, are as follows:

			Fair Value Measurements at December 31, 2016 Using
Description	Total Carrying Value at December 31, 2016		Quoted prices in active markets (Level 1)			Significant other observable inputs (Level 2)			Significant unobservable inputs (Level 3)
Time Deposits(1)	$	22,240	$	—		$	22,240		$	—
Trading Securities	10,659		10,181		(2)	478		(1)	—

			Fair Value Measurements at March 31, 2017 Using
Description	Total Carrying Value at March 31, 2017		Quoted prices in active markets (Level 1)			Significant other observable inputs (Level 2)			Significant unobservable inputs (Level 3)
Time Deposits(1)	$	25,739	$	—		$	25,739		$	—
Trading Securities	10,342		9,958		(2)	384		(1)	—
Derivative Assets(3)	114		—			114			—

_______________________________________________________________________________

(1) Time deposits and certain trading securities (included in Prepaid expenses and other in our Consolidated Balance Sheets) are measured based on quoted prices for similar assets and/or subsequent transactions.

(2) Certain trading securities are measured at fair value using quoted market prices.

(3) Derivative assets relate to short-term (six months or less) foreign currency contracts that we have entered into to hedge certain of our foreign exchange intercompany exposures, as more fully disclosed at Note 3. We calculate the value of such forward contracts by adjusting the spot rate utilized at the balance sheet date for translation purposes by an estimate of the forward points observed in active markets.

Schedule of changes in accumulated other comprehensive items, net

The changes in accumulated other comprehensive items, net for the three months ended March 31, 2016 and 2017, respectively, are as follows:

	Foreign Currency Translation Adjustments			Market Value Adjustments for Securities			Total
Balance as of December 31, 2015	$	(175,651	)	$	734		$	(174,917	)
Other comprehensive income (loss):
Foreign currency translation adjustments	23,491			—			23,491
Market value adjustments for securities	—			(734		)	(734		)
Total other comprehensive income (loss)	23,491			(734		)	22,757
Balance as of March 31, 2016	$	(152,160	)	$	—		$	(152,160	)

	Foreign Currency Translation Adjustments			Market Value Adjustments for Securities		Total
Balance as of December 31, 2016	$	(212,573	)	$	—	$	(212,573	)
Other comprehensive income (loss):
Foreign currency translation adjustments	51,334			—		51,334
Market value adjustments for securities	—			—		—
Total other comprehensive income (loss)	51,334			—		51,334
Balance as of March 31, 2017	$	(161,239	)	$	—	$	(161,239	)

Other expense (income), net

Other (income) expense, net for the three months ended March 31, 2016 and 2017 consists of the following:

	Three Months Ended March 31,
	2016			2017
Foreign currency transaction (gains) losses, net	$	(12,542	)	$	(4,164	)
Other, net	605			(2,200		)
	$	(11,937	)	$	(6,364	)

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Derivative Instruments and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Foreign exchange gains related to currency translation adjustments

As a result, we recorded the following foreign exchange (losses) gains, net of tax, related to the change in fair value of such debt due to currency translation adjustments, which is a component of accumulated other comprehensive items, net:

	Three Months Ended March 31,
	2016			2017
Foreign exchange (losses) gains	$	(1,342	)	$	(1,072	)
Less: Tax (benefit) expense on foreign exchange (losses) gains	—			—
Foreign exchange (losses) gains, net of tax	$	(1,342	)	$	(1,072	)

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Acquisitions (Tables)

3 Months Ended

Mar. 31, 2017

Business Combinations [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

A summary of the cumulative consideration paid and the preliminary allocation of the purchase price paid for all of our 2017 acquisitions is as follows:

Cash Paid (gross of cash acquired)(1)	$	13,736
Fair Value of Noncontrolling Interests	843
Total Consideration	14,579
Fair Value of Identifiable Assets Acquired:
Cash	1,631
Accounts Receivable and Prepaid Expenses	1,771
Other Assets	692
Property, Plant and Equipment(2)	2,845
Customer Relationship Intangible Assets(3)	8,222
Accounts Payable, Accrued Expenses and Other Liabilities	(6,208		)
Deferred Income Taxes	(461		)
Total Fair Value of Identifiable Net Assets Acquired	8,492
Goodwill Initially Recorded(4)	$	6,087

_______________________________________________________________________________

(1) Included in cash paid for acquisitions in the Consolidated Statement of Cash Flows for the three months ended March 31, 2017 is net cash acquired of $1,631 and contingent and other payments, net of $82 related to acquisitions made in previous years.

(2) Consists primarily of racking structures and warehouse equipment. These assets are depreciated using the straight-line method with the useful lives as noted in Note 2.f. to Notes to Consolidated Financial Statements included in our Annual Report.

(3) The weighted average lives of customer relationship intangible assets associated with acquisitions in 2017 was 20 years.

(4) The goodwill associated with acquisitions is primarily attributable to the assembled workforce, expanded market opportunities and costs and other operating synergies anticipated upon the integration of the operations of us and the acquired businesses.

Business Acquisition, Pro Forma Information

	Three Months Ended March 31, 2016
Total Revenues	$	937,952
Income from Continuing Operations	$	58,058
Per Share Income from Continuing Operations - Basic	$	0.22
Per Share Income from Continuing Operations - Diluted	$	0.22

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Debt (Tables)

3 Months Ended

Mar. 31, 2017

Debt Disclosure [Abstract]

Schedule of carrying amount and fair value of long-term debt instruments

Long-term debt is as follows:

	December 31, 2016											March 31, 2017
	Debt (inclusive of discount)			Unamortized Deferred Financing Costs			Carrying Amount			Fair Value		Debt (inclusive of discount)				Unamortized Deferred Financing Costs			Carrying Amount			Fair Value
Revolving Credit Facility	$	953,548		$	(7,530	)	$	946,018		$	953,548	$	988,327			$	(6,800	)	$	981,527		$	988,327
Term Loan	234,375			—			234,375			234,375		228,125				—			228,125			228,125
Australian Dollar Term Loan (the "AUD Term Loan")	177,198			(3,774		)	173,424			178,923		186,963				(3,832		)	183,131			188,715
6% Senior Notes due 2020 (the "6% Notes due 2020")(1)(2)	1,000,000			(12,730		)	987,270			1,052,500		1,000,000				(11,881		)	988,119			1,046,250
43/8% Senior Notes due 2021 (the "43/8% Notes")(1)(2)	500,000			(7,593		)	492,407			511,250		500,000				(7,163		)	492,837			512,500
61/8% CAD Senior Notes due 2021 (the "CAD Notes due 2021")(3)	148,792			(1,635		)	147,157			155,860		150,045				(1,561		)	148,484			155,859
61/8% GBP Senior Notes due 2022 (the "GBP Notes")(2)	493,648			(6,214		)	487,434			527,562		499,508				(6,012		)	493,496			529,478
6% Senior Notes due 2023 (the "6% Notes due 2023")(1)	600,000			(7,322		)	592,678			637,500		600,000				(7,048		)	592,952			632,280
53/8% CAD Senior Notes due 2023 (the "CAD Notes due 2023")(2)(3)	185,990			(3,498		)	182,492			188,780		187,557				(3,405		)	184,152			193,418
53/4% Senior Subordinated Notes due 2024 (the "53/4% Notes")(1)	1,000,000			(10,529		)	989,471			1,027,500		1,000,000				(10,186		)	989,814			1,017,500
53/8% Senior Notes due 2026 (the "53/8% Notes")(2)	250,000			(4,044		)	245,956			242,500		250,000				(3,937		)	246,063			248,750
Real Estate Mortgages, Capital Leases and Other	478,565			(1,277		)	477,288			478,565		518,191				(1,239		)	516,952			518,191
Accounts Receivable Securitization Program(4)	247,000			(384		)	246,616			247,000		250,000				(308		)	249,692			250,000
Mortgage Securitization Program	50,000			(1,405		)	48,595			50,000		50,000				(1,369		)	48,631			50,000
Total Long-term Debt	6,319,116			(67,935		)	6,251,181					6,408,716			—	(64,741		)	6,343,975
Less Current Portion	(172,975		)	—			(172,975		)			(421,535		)		308			(421,227		)
Long-term Debt, Net of Current Portion	$	6,146,141		$	(67,935	)	$	6,078,206				$	5,987,181			$	(64,433	)	$	5,922,748

______________________________________________________________

(1) Collectively, the "Parent Notes".

(2) Collectively, the "Unregistered Notes".

(3) Collectively, the "CAD Notes".

(4) Because the Accounts Receivable Securitization Program terminates on March 6, 2018, at which point all obligations under the program become due, this debt is classified within the current portion of long-term debt in our Consolidated Balance Sheet as of March 31, 2017.

Schedule of Leverage and Fixed Charge Ratios

Our leverage and fixed charge coverage ratios under the Credit Agreement as of December 31, 2016 and March 31 2017, respectively, and our leverage ratio under our indentures as of December 31, 2016 and March 31, 2017, respectively, are as follows:

	December 31, 2016	March 31, 2017	Maximum/Minimum Allowable
Net total lease adjusted leverage ratio	5.7	5.8	Maximum allowable of 6.5
Net secured debt lease adjusted leverage ratio	2.7	2.7	Maximum allowable of 4.0
Bond leverage ratio (not lease adjusted)	5.2	5.5	Maximum allowable of 6.5
Fixed charge coverage ratio	2.4	2.3	Minimum allowable of 1.5

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Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors (Tables)

3 Months Ended

Mar. 31, 2017

Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors

Schedule of selected consolidated Balance sheet statements of Parent, Guarantors, Canada Company and Non-Guarantors

CONSOLIDATED BALANCE SHEETS

	December 31, 2016
	Parent		Guarantors		Canada Company		Non- Guarantors		Eliminations			Consolidated
Assets
Current Assets:
Cash and Cash Equivalents:	$	2,405	$	23,380	$	17,110	$	193,589	$	—		$	236,484
Accounts receivable	—		53,364		37,781		600,104		—			691,249
Intercompany receivable	—		653,008		21,114		—		(674,122		)	—
Prepaid expenses and other	—		70,660		4,967		108,776		(29		)	184,374
Total Current Assets	2,405		800,412		80,972		902,469		(674,151		)	1,112,107
Property, Plant and Equipment, Net	483		1,804,991		159,391		1,118,461		—			3,083,326
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	4,014,330		1,000		—		—		(4,015,330		)	—
Investment in subsidiaries	1,659,518		699,411		35,504		77,449		(2,471,882		)	—
Goodwill	—		2,602,784		217,422		1,084,815		—			3,905,021
Other	—		765,698		49,570		571,078		—			1,386,346
Total Other Assets, Net	5,673,848		4,068,893		302,496		1,733,342		(6,487,212		)	5,291,367
Total Assets	$	5,676,736	$	6,674,296	$	542,859	$	3,754,272	$	(7,161,363	)	$	9,486,800
Liabilities and Equity
Intercompany Payable	$	558,492	$	—	$	—	$	115,630	$	(674,122	)	$	—
Current Portion of Long-Term Debt	—		51,456		—		121,548		(29		)	172,975
Total Other Current Liabilities	58,478		488,194		40,442		286,468		—			873,582
Long-Term Debt, Net of Current Portion	3,093,388		1,055,642		335,410		1,593,766		—			6,078,206
Long-Term Notes Payable to Affiliates and Intercompany Payable	1,000		4,014,330		—		—		(4,015,330		)	—
Other Long-term Liabilities	—		127,715		54,054		188,900		—			370,669
Commitments and Contingencies (See Note 8)
Redeemable Noncontrolling Interests	28,831		—		—		25,866		—			54,697
Total Iron Mountain Incorporated Stockholders' Equity	1,936,547		936,959		112,953		1,421,970		(2,471,882		)	1,936,547
Noncontrolling Interests	—		—		—		124		—			124
Total Equity	1,936,547		936,959		112,953		1,422,094		(2,471,882		)	1,936,671
Total Liabilities and Equity	$	5,676,736	$	6,674,296	$	542,859	$	3,754,272	$	(7,161,363	)	$	9,486,800

CONSOLIDATED BALANCE SHEETS (Continued)

	March 31, 2017
	Parent		Guarantors		Canada Company		Non- Guarantors		Eliminations			Consolidated
Assets
Current Assets:
Cash and cash equivalents(1)	$	470	$	64,550	$	5,763	$	410,667	$	(185,822	)	$	295,628
Accounts receivable	—		36,545		36,215		648,270		—			721,030
Intercompany receivable	—		904,316		33,923		—		(938,239		)	—
Prepaid expenses and other	114		79,337		6,325		96,232		(29		)	181,979
Total Current Assets	584		1,084,748		82,226		1,155,169		(1,124,090		)	1,198,637
Property, Plant and Equipment, Net	438		1,810,787		157,814		1,142,701		—			3,111,740
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	4,214,179		1,000		—		—		(4,215,179		)	—
Investment in subsidiaries	1,750,210		785,770		35,948		85,456		(2,657,384		)	—
Goodwill	—		2,584,712		217,837		1,154,509		—			3,957,058
Other	—		762,098		49,211		593,390		—			1,404,699
Total Other Assets, Net	5,964,389		4,133,580		302,996		1,833,355		(6,872,563		)	5,361,757
Total Assets	$	5,965,411	$	7,029,115	$	543,036	$	4,131,225	$	(7,996,653	)	$	9,672,134
Liabilities and Equity
Intercompany Payable	$	698,066	$	—	$	—	$	240,173	$	(938,239	)	$	—
Borrowings under cash pools	—		138,693		—		47,129		(185,822		)	—
Current Portion of Long-Term Debt	—		45,837		—		375,419		(29		)	421,227
Total Other Current Liabilities	199,038		454,823		41,747		301,634		—			997,242
Long-Term Debt, Net of Current Portion	3,159,864		1,014,038		338,456		1,410,390		—			5,922,748
Long-Term Notes Payable to Affiliates and Intercompany Payable	1,000		4,214,179		—		—		(4,215,179		)	—
Other Long-term Liabilities	—		138,228		41,429		180,178		—			359,835
Commitments and Contingencies (See Note 8)
Redeemable Noncontrolling Interests	4,718		—		—		62,590		—			67,308
Total Iron Mountain Incorporated Stockholders' Equity	1,902,725		1,023,317		121,404		1,512,663		(2,657,384		)	1,902,725
Noncontrolling Interests	—		—		—		1,049		—			1,049
Total Equity	1,902,725		1,023,317		121,404		1,513,712		(2,657,384		)	1,903,774
Total Liabilities and Equity	$	5,965,411	$	7,029,115	$	543,036	$	4,131,225	$	(7,996,653	)	$	9,672,134

______________________________________________________________

(1) Included within Cash and Cash Equivalents at March 31, 2017 is approximately $58,200 and $144,100 of cash on deposit associated with our Cash Pools for the Guarantor and Non-Guarantors, respectively. See Note 5 for more information on our Cash Pools.

Schedule of selected consolidated Income statements of Parent, Guarantors, Canada Company and Non-Guarantors

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)

	Three Months Ended March 31, 2016
	Parent			Guarantors			Canada Company			Non- Guarantors			Eliminations			Consolidated
Revenues:
Storage rental	$	—		$	313,619		$	27,605		$	119,987		$	—		$	461,211
Service	—			188,908			14,642			85,929			—			289,479
Intercompany revenues	—			1,013			—			17,345			(18,358		)	—
Total Revenues	—			503,540			42,247			223,261			(18,358		)	750,690
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	—			208,154			6,790			111,161			—			326,105
Selling, general and administrative	72			150,019			3,373			54,302			—			207,766
Intercompany cost of sales	—			3,354			13,991			1,013			(18,358		)	—
Depreciation and amortization	45			56,926			3,079			27,154			—			87,204
(Gain) Loss on disposal/write-down of property, plant and equipment (excluding real estate), net	—			(570		)	6			113			—			(451		)
Total Operating Expenses	117			417,883			27,239			193,743			(18,358		)	620,624
Operating (Loss) Income	(117		)	85,657			15,008			29,518			—			130,066
Interest Expense (Income), Net	39,984			(8,509		)	10,034			25,553			—			67,062
Other Expense (Income), Net	886			3,456			(20		)	(16,259		)	—			(11,937		)
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(40,987		)	90,710			4,994			20,224			—			74,941
Provision (Benefit) for Income Taxes	—			9,070			1,866			964			—			11,900
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(103,761		)	(22,374		)	(1,371		)	(3,128		)	130,634			—
Net Income (Loss)	62,774			104,014			4,499			22,388			(130,634		)	63,041
Less: Net Income (Loss) Attributable to Noncontrolling Interests	—			—			—			267			—			267
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	62,774		$	104,014		$	4,499		$	22,121		$	(130,634	)	$	62,774
Net Income (Loss)	$	62,774		$	104,014		$	4,499		$	22,388		$	(130,634	)	$	63,041
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	(1,342		)	—			1,789			23,531			—			23,978
Market Value Adjustments for Securities	—			(734		)	—			—			—			(734		)
Equity in Other Comprehensive Income (Loss) of Subsidiaries	24,099			24,099			661			1,789			(50,648		)	—
Total Other Comprehensive Income (Loss)	22,757			23,365			2,450			25,320			(50,648		)	23,244
Comprehensive Income (Loss)	85,531			127,379			6,949			47,708			(181,282		)	86,285
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	—			—			—			754			—			754
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	85,531		$	127,379		$	6,949		$	46,954		$	(181,282	)	$	85,531

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued)

	Three Months Ended March 31, 2017
	Parent			Guarantors			Canada Company			Non- Guarantors			Eliminations			Consolidated
Revenues:
Storage rental	$	—		$	349,351		$	32,006		$	190,922		$	—		$	572,279
Service	—			218,209			16,050			132,338			—			366,597
Intercompany revenues	—			1,097			—			22,342			(23,439		)	—
Total Revenues	—			568,657			48,056			345,602			(23,439		)	938,876
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	—			239,329			7,550			179,828			—			426,707
Selling, general and administrative	79			162,705			3,561			73,821			—			240,166
Intercompany cost of sales	—			6,606			15,736			1,097			(23,439		)	—
Depreciation and amortization	46			76,161			4,238			44,262			—			124,707
(Gain) Loss on disposal/write-down of property, plant and equipment (excluding real estate), net	—			(548		)	2			87			—			(459		)
Total Operating Expenses	125			484,253			31,087			299,095			(23,439		)	791,121
Operating (Loss) Income	(125		)	84,404			16,969			46,507			—			147,755
Interest Expense (Income), Net	42,784			(3,279		)	11,670			34,880			—			86,055
Other Expense (Income), Net	81			2,519			(27		)	(8,937		)	—			(6,364		)
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(42,990		)	85,164			5,326			20,564			—			68,064
Provision (Benefit) for Income Taxes	—			12,744			(3,488		)	(36		)	—			9,220
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(101,115		)	(23,413		)	(157		)	(8,814		)	133,499			—
Income (Loss) from Continuing Operations	58,125			95,833			8,971			29,414			(133,499		)	58,844
Income (Loss) from Discontinued Operations, Net of Tax	—			198			—			(535		)	—			(337		)
Net Income (Loss)	58,125			96,031			8,971			28,879			(133,499		)	58,507
Less: Net Income (Loss) Attributable to Noncontrolling Interests	—			—			—			382			—			382
Net Income (Loss) Attributable to Iron Mountain Incorporated	$	58,125		$	96,031		$	8,971		$	28,497		$	(133,499	)	$	58,125
Net Income (Loss)	$	58,125		$	96,031		$	8,971		$	28,879		$	(133,499	)	$	58,507
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	(1,072		)	—			635			51,221			—			50,784
Equity in Other Comprehensive Income (Loss) of Subsidiaries	52,406			28,540			287			635			(81,868		)	—
Total Other Comprehensive Income (Loss)	51,334			28,540			922			51,856			(81,868		)	50,784
Comprehensive Income (Loss)	109,459			124,571			9,893			80,735			(215,367		)	109,291
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	—			—			—			(168		)	—			(168		)
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$	109,459		$	124,571		$	9,893		$	80,903		$	(215,367	)	$	109,459

Schedule of selected consolidated cash flow statements of Parent, Guarantors, Canada Company and Non-Guarantors

CONSOLIDATED STATEMENTS OF CASH FLOWS

	Three Months Ended March 31, 2016
	Parent			Guarantors			Canada Company			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Cash Flows from Operating Activities	$	(48,737	)	$	121,636		$	6,477		$	1,742		$	—		$	81,118
Cash Flows from Investing Activities:
Capital expenditures	—			(61,886		)	(1,007		)	(17,959		)	—			(80,852		)
Cash paid for acquisitions, net of cash acquired	—			—			130			(19,470		)	—			(19,340		)
Intercompany loans to subsidiaries	166,442			31,987			—			—			(198,429		)	—
Investment in subsidiaries	(1,585		)	(1,585		)	—			—			3,170			—
Acquisitions of customer relationships and customer inducements	—			(4,733		)	—			(2,525		)	—			(7,258		)
Proceeds from sales of property and equipment and other, net (including real estate)	—			50			—			119			—			169
Cash Flows from Investing Activities	164,857			(36,167		)	(877		)	(39,835		)	(195,259		)	(107,281		)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(8,463		)	(1,422,545		)	(383,896		)	(569,311		)	—			(2,384,215		)
Proceeds from revolving credit and term loan facilities and other debt	—			1,500,499			370,816			638,530			—			2,509,845
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	—			—			—			885			—			885
Intercompany loans from parent	—			(167,514		)	(1,111		)	(29,804		)	198,429			—
Equity contribution from parent	—			1,585			—			1,585			(3,170		)	—
Parent cash dividends	(104,931		)	—			—			—			—			(104,931		)
Net (payments) proceeds associated with employee stock-based awards	(1,975		)	—			—			—			—			(1,975		)
Excess tax (deficiency) benefit from stock-based compensation	(348		)	—			—			—			—			(348		)
Cash Flows from Financing Activities	(115,717		)	(87,975		)	(14,191		)	41,885			195,259			19,261
Effect of exchange rates on cash and cash equivalents	—			—			(608		)	(2,926		)	—			(3,534		)
Increase (Decrease) in cash and cash equivalents	403			(2,506		)	(9,199		)	866			—			(10,436		)
Cash and cash equivalents, beginning of period	151			7,803			13,182			107,245			—			128,381
Cash and cash equivalents, end of period	$	554		$	5,297		$	3,983		$	108,111		$	—		$	117,945

CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)

	Three Months Ended March 31, 2017
	Parent			Guarantors			Canada Company			Non- Guarantors			Eliminations			Consolidated
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	$	(41,288	)	$	136,411		$	5,291		$	21,760		$	—		$	122,174
Cash Flows from Operating Activities—Discontinued Operations	—			198			(535		)	—			—			(337		)
Cash Flows from Operating Activities	(41,288		)	136,609			4,756			21,760			—			121,837
Cash Flows from Investing Activities:
Capital expenditures	—			(53,175		)	(2,555		)	(17,472		)	—			(73,202		)
Cash paid for acquisitions, net of cash acquired	—			(6,380		)	—			(5,807		)	—			(12,187		)
Intercompany loans to subsidiaries	(1,187		)	(72,807		)	—			(478		)	74,472			—
Investment in subsidiaries	(16,170		)	—			—			—			16,170			—
Acquisitions of customer relationships and customer inducements	—			(20,653		)	(271		)	(479		)	—			(21,403		)
Net proceeds from Iron Mountain Divestments (see Note 10)	—			—			—			2,423			—			2,423
Proceeds from sales of property and equipment and other, net (including real estate)	—			93			2			(29		)	—			66
Cash Flows from Investing Activities—Continuing Operations	(17,357		)	(152,922		)	(2,824		)	(21,842		)	90,642			(104,303		)
Cash Flows from Investing Activities—Discontinued Operations	—			—			—			—			—			—
Cash Flows from Investing Activities	(17,357		)	(152,922		)	(2,824		)	(21,842		)	90,642			(104,303		)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(31,733		)	(1,495,558		)	(71		)	(1,154,986		)	—			(2,682,348		)
Proceeds from revolving credit and term loan facilities and other debt	94,811			1,423,653			—			1,196,319			—			2,714,783
Borrowings (payments) under cash pools	—			138,693			—			47,129			(185,822		)	—
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	—			—			—			10,668			—			10,668
Intercompany loans from parent	—			(9,305		)	(12,680		)	96,457			(74,472		)	—
Equity contribution from parent	—			—			—			16,170			(16,170		)	—
Parent cash dividends	(2,060		)	—			—			—			—			(2,060		)
Net payments associated with employee stock-based awards	(4,308		)	—			—			—			—			(4,308		)
Payment of debt financing and stock issuance costs	—			—			(73		)	—			—			(73		)
Cash Flows from Financing Activities—Continuing Operations	56,710			57,483			(12,824		)	211,757			(276,464		)	36,662
Cash Flows from Financing Activities—Discontinued Operations	—			—			—			—			—			—
Cash Flows from Financing Activities	56,710			57,483			(12,824		)	211,757			(276,464		)	36,662
Effect of exchange rates on cash and cash equivalents	—			—			(455		)	5,403			—			4,948
(Decrease) Increase in cash and cash equivalents	(1,935		)	41,170			(11,347		)	217,078			(185,822		)	59,144
Cash and cash equivalents, beginning of period	2,405			23,380			17,110			193,589			—			236,484
Cash and cash equivalents, end of period	$	470		$	64,550		$	5,763		$	410,667		$	(185,822	)	$	295,628

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2017

Segment Reporting [Abstract]

Schedule of analysis of business segment information and reconciliation

An analysis of our business segment information and reconciliation to the accompanying Consolidated Financial Statements is as follows:

	North American Records and Information Management Business			North American Data Management Business		Western European Business		Other International Business		Corporate and Other Business			Total Consolidated
For the Three Months Ended March 31, 2016
Total Revenues	$	444,681		$	96,343	$	93,876	$	101,341	$	14,449		$	750,690
Depreciation and Amortization	45,350			5,670		11,251		14,286		10,647			87,204
Depreciation	40,255			5,422		8,671		10,902		10,140			75,390
Amortization	5,095			248		2,580		3,384		507			11,814
Adjusted EBITDA	176,557			53,460		31,946		21,576		(48,393		)	235,146
Expenditures for Segment Assets	46,666			4,827		6,060		32,156		17,741			107,450
Capital Expenditures	42,088			4,827		4,059		12,162		17,716			80,852
Cash (Received) Paid for Acquisitions, Net of Cash Acquired	(130		)	—		—		19,470		—			19,340
Acquisitions of Customer Relationships and Customer Inducements	4,708			—		2,001		524		25			7,258
For the Three Months Ended March 31, 2017
Total Revenues	507,597			106,950		120,072		189,241		15,016			938,876
Depreciation and Amortization	60,535			8,933		14,297		27,676		13,266			124,707
Depreciation	51,952			6,673		10,888		19,305		10,774			99,592
Amortization	8,583			2,260		3,409		8,371		2,492			25,115
Adjusted EBITDA	209,530			55,912		34,142		55,347		(62,357		)	292,574
Expenditures for Segment Assets	51,888			8,737		5,025		18,620		22,522			106,792
Capital Expenditures	26,578			8,737		4,898		12,467		20,522			73,202
Cash Paid (Received) for Acquisitions, Net of Cash Acquired	4,379			—		—		5,808		2,000			12,187
Acquisitions of Customer Relationships and Customer Inducements	20,931			—		127		345		—			21,403

Schedule of reconciliation of Adjusted EBITDA to income from continuing operations

A reconciliation of Adjusted EBITDA to income (loss) from continuing operations on a consolidated basis is as follows:

	Three Months Ended March 31,
	2016			2017
Adjusted EBITDA	$	235,146		$	292,574
(Add)/Deduct:
(Gain) Loss on Disposal/Write-Down of Property, Plant and Equipment (Excluding Real Estate), Net	(451		)	(459		)
Provision (Benefit) for Income Taxes	11,900			9,220
Other (Income) Expense, Net	(11,937		)	(6,364		)
Interest Expense, Net	67,062			86,055
Depreciation and Amortization	87,204			124,707
Recall Costs(1)	18,327			20,571
Income (Loss) from Continuing Operations	$	63,041		$	58,844

_______________________________________________________________________________

(1) Represents operating expenditures to complete the Recall Transaction, including advisory and professional fees and costs to complete the Divestments required in connection with receipt of regulatory approval, including transitional services required to support the divested businesses during a transition period and operating expenditures to integrate Recall with our existing operations, including moving, severance, facility upgrade, REIT conversion and system upgrade costs ("Recall Costs").

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Stockholders' Equity Matters (Tables)

3 Months Ended

Mar. 31, 2017

Equity [Abstract]

Schedule of dividend declared and payments

In fiscal year 2016 and in the first three months of 2017, our board of directors declared the following dividends:

Declaration Date	Dividend Per Share	Record Date	Total Amount		Payment Date
February 17, 2016	0.4850	March 7, 2016	$	102,651	March 21, 2016
May 25, 2016	0.4850	June 6, 2016	127,469		June 24, 2016
July 27, 2016	0.4850	September 12, 2016	127,737		September 30, 2016
October 31, 2016	0.5500	December 15, 2016	145,006		December 30, 2016
February 15, 2017	0.5500	March 15, 2017	145,235		April 3, 2017

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Divestments (Tables)

3 Months Ended

Mar. 31, 2017

Discontinued Operations and Disposal Groups [Abstract]

Disposal Groups, Including Discontinued Operations

The table below summarizes certain results of operations of the Recall Divestments:

	Three Months Ended March 31, 2017
Description	Initial United States Divestments		Seattle/Atlanta Divestments			Recall Canadian Divestments			UK Divestments		Total(1)
Income (Loss) from Discontinued Operations Before Provision (Benefit) for Income Taxes	$	—	$	239		$	(668	)	$	—	$	(429	)
Provision (Benefit) for Income Taxes	—		41		—	(133		)	—		(92		)
Income (Loss) from Discontinued Operations, Net of Tax	$	—	$	198		$	(535	)	$	—	$	(337	)

_____________________________________________________________________________

(1) During the three months ended March 31, 2017, we recognized a loss from discontinued operations before benefit for income taxes of $429, primarily related to costs associated with transitional service agreements related to the Recall Divestments.

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Recall Costs (Tables)

3 Months Ended

Mar. 31, 2017

Business Combinations [Abstract]

Acquisition costs Included in Statement of Operations

Recall Costs included in the accompanying Consolidated Statements of Operations are as follows:

	Three Months Ended March 31,
	2016		2017
Cost of sales (excluding depreciation and amortization)	$	—	$	7,887
Selling, general and administrative expenses	18,327		12,684
Total Recall Costs	$	18,327	$	20,571

Recall Costs included in the accompanying Consolidated Statements of Operations by segment are as follows:

	Three Months Ended March 31,
	2016		2017
North American Records and Information Management Business	$	39	$	7,299
North American Data Management Business	—		873
Western European Business	217		3,216
Other International Business	431		1,651
Corporate and Other Business	17,640		7,532
Total Recall Costs	$	18,327	$	20,571

Restructuring and Related Costs [Table Text Block]

A rollforward of accrued liabilities related to Recall Costs on our Consolidated Balance Sheets as of December 31, 2016 to March 31, 2017 is as follows:

	Accrual for Recall Costs
Balance at December 31, 2016	$	4,914
Amounts accrued	5,147
Change in estimates(1)	(230		)
Payments	(5,371		)
Currency translation adjustments	47
Balance at March 31, 2017(2)	$	4,507

_______________________________________________________________________________

(1) Includes adjustments made to amounts accrued in a prior period.

(2) Accrued liabilities related to Recall Costs as of March 31, 2017 presented in the table above generally related to employee severance costs and onerous lease liabilities. We expect that the majority of these liabilities will be paid throughout 2017. Additional Recall Costs recorded in our Consolidated Statement of Operations have either been settled in cash during the three months ended March 31, 2017 or are included in our Consolidated Balance Sheet as of March 31, 2017 as a component of accounts payable.

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Summary of Significant Accounting Policies - (Gain) Loss on Foreign Currency Transactions (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accounting Policies [Abstract]
Total loss on foreign currency transactions	$ (4,164)	$ (12,542)

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Summary of Significant Accounting Policies - Goodwill Narrative (Details)	Oct. 01, 2016 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Impairment Loss	$ 0

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Summary of Significant Accounting Policies - Schedule of Changes in Carrying Value of Goodwill, by Reportable Operating Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Goodwill
Goodwill	$ 3,957,058	$ 3,905,021
Gross amount of goodwill [Roll Forward]
Beginning balance	4,219,868
Deductible goodwill acquired during the year	1,776
Non-deductible goodwill acquired during the year	4,311
Fair value and other adjustments	11,693
Currency effects	34,467
Ending balance	4,272,115
Goodwill accumulated amortization [Roll Forward]
Accumulated amortization. beginning balance	314,847
Currency effects	210
Accumulated amortization. ending balance	315,057
Accumulated goodwill impairment, beginning balance	132,409
Accumulated goodwill impairment, ending balance	132,409
Fair value and other adjustments related to deferred income taxes	11,693
North American Records and Information Management Business
Goodwill
Goodwill	2,288,642	2,280,911
Gross amount of goodwill [Roll Forward]
Beginning balance	2,485,806
Deductible goodwill acquired during the year	672
Non-deductible goodwill acquired during the year	0
Fair value and other adjustments	5,548
Currency effects	1,569
Ending balance	2,493,595
Goodwill accumulated amortization [Roll Forward]
Accumulated amortization. beginning balance	204,895
Currency effects	58
Accumulated amortization. ending balance	204,953
Accumulated goodwill impairment, beginning balance	85,909
Accumulated goodwill impairment, ending balance	85,909
North American Data Management Business
Goodwill
Goodwill	506,648	505,690
Gross amount of goodwill [Roll Forward]
Beginning balance	559,443
Deductible goodwill acquired during the year	0
Non-deductible goodwill acquired during the year	0
Fair value and other adjustments	525
Currency effects	448
Ending balance	560,416
Goodwill accumulated amortization [Roll Forward]
Accumulated amortization. beginning balance	53,753
Currency effects	15
Accumulated amortization. ending balance	53,768
Accumulated goodwill impairment, beginning balance	0
Accumulated goodwill impairment, ending balance	0
Western European Business
Goodwill
Goodwill	356,763	349,421
Gross amount of goodwill [Roll Forward]
Beginning balance	405,571
Deductible goodwill acquired during the year	0
Non-deductible goodwill acquired during the year	0
Fair value and other adjustments	2,818
Currency effects	4,649
Ending balance	413,038
Goodwill accumulated amortization [Roll Forward]
Accumulated amortization. beginning balance	56,150
Currency effects	125
Accumulated amortization. ending balance	56,275
Accumulated goodwill impairment, beginning balance	46,500
Accumulated goodwill impairment, ending balance	46,500
Other International Business
Goodwill
Goodwill	778,366	743,077
Gross amount of goodwill [Roll Forward]
Beginning balance	743,126
Deductible goodwill acquired during the year	387
Non-deductible goodwill acquired during the year	4,311
Fair value and other adjustments	2,802
Currency effects	27,801
Ending balance	778,427
Goodwill accumulated amortization [Roll Forward]
Accumulated amortization. beginning balance	49
Currency effects	12
Accumulated amortization. ending balance	61
Accumulated goodwill impairment, beginning balance	0
Accumulated goodwill impairment, ending balance	0
Corporate and Other
Goodwill
Goodwill	26,639	$ 25,922
Gross amount of goodwill [Roll Forward]
Beginning balance	25,922
Deductible goodwill acquired during the year	717
Non-deductible goodwill acquired during the year	0
Fair value and other adjustments	0
Currency effects	0
Ending balance	26,639
Goodwill accumulated amortization [Roll Forward]
Accumulated amortization. beginning balance	0
Currency effects	0
Accumulated amortization. ending balance	0
Accumulated goodwill impairment, beginning balance	0
Accumulated goodwill impairment, ending balance	$ 0

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Summary of Significant Accounting Policies - Schedule of Components of Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Amortizable intangible assets
Gross carrying amount	$ 1,675,079		$ 1,628,808
Accumulated amortization	(384,403)		(359,486)
Net carrying amount	1,290,676		1,269,322
Amortization of other deferred charges	25,115	$ 11,814
Revenue reduction associated with amortization of permanent withdrawal fees	3,158	$ 2,943
Customer Relationships and Acquisition Costs
Amortizable intangible assets
Gross carrying amount	1,650,854		1,604,020
Accumulated amortization	(373,925)		(351,497)
Net carrying amount	1,276,929		1,252,523
Core Technology
Amortizable intangible assets
Gross carrying amount	24,225		24,788
Accumulated amortization	(10,478)		(7,989)
Net carrying amount	$ 13,747		$ 16,799
Minimum | Customer Relationships [Member]
Amortizable intangible assets
Finite-Lived Intangible Asset, Useful Life	8 years
Minimum | Initial Costs For Transport Of Boxes [Member]
Amortizable intangible assets
Finite-Lived Intangible Asset, Useful Life	8 years
Minimum | Customer Relationships Current Record Management Vendor Or Payments To Customers [Member]
Amortizable intangible assets
Finite-Lived Intangible Asset, Useful Life	3 years
Minimum | Other Intangible Assets [Member]
Amortizable intangible assets
Finite-Lived Intangible Asset, Useful Life	3 years
Maximum | Customer Relationships [Member]
Amortizable intangible assets
Finite-Lived Intangible Asset, Useful Life	30 years
Maximum | Initial Costs For Transport Of Boxes [Member]
Amortizable intangible assets
Finite-Lived Intangible Asset, Useful Life	30 years
Maximum | Customer Relationships Current Record Management Vendor Or Payments To Customers [Member]
Amortizable intangible assets
Finite-Lived Intangible Asset, Useful Life	15 years
Maximum | Other Intangible Assets [Member]
Amortizable intangible assets
Finite-Lived Intangible Asset, Useful Life	10 years

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Summary of Significant Accounting Policies - Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Employee stock-based awards
Weighted Average Common Shares Outstanding-Basic (in shares)	263,855,000	211,526,000
Stock-based compensation	$ 6,549	$ 6,885
Stock-based compensation expense (income), net of tax	$ 4,585	$ 4,914
Stock-based compensation expense per basic and diluted share (in dollars per share)	$ 0.02	$ 0.02
Excess tax (deficiency) benefits from stock-based compensation	$ 0	$ (348)
Certain options as a percentage of total outstanding options	100.00%
Summary of option activity
Options outstanding balance, end of period (in shares)	4,314,629
Share-Based Compensation, aggregate disclosures
Employee stock-based awards, unrecognized compensation costs on nonvested awards	$ 61,990
Employee stock-based awards, unrecognized compensation costs on nonvested awards, weighted average period of recognition	2 years 4 months 24 days
Continuing Operations
Employee stock-based awards
Stock-based compensation	$ 6,549	6,885
Continuing Operations | Cost of sales (excluding depreciation and amortization)
Employee stock-based awards
Stock-based compensation	28	27
Continuing Operations | Selling, general and administrative expenses
Employee stock-based awards
Stock-based compensation	$ 6,521	$ 6,858
Three year vesting options
Employee stock-based awards
Certain options as a percentage of total outstanding options	83.40%
Summary of option activity
Options outstanding balance, end of period (in shares)	3,597,671
Five year vesting options
Employee stock-based awards
Certain options as a percentage of total outstanding options	14.50%
Summary of option activity
Options outstanding balance, end of period (in shares)	626,204
Ten year vesting options
Employee stock-based awards
Certain options as a percentage of total outstanding options	2.10%
Summary of option activity
Options outstanding balance, end of period (in shares)	90,754
Stock Options
Employee stock-based awards
Weighted average fair value of options granted (in dollars per share)	$ 4.26	$ 2.49
Weighted average assumptions used for grants
Expected volatility (as a percent)	25.80%	27.20%
Risk-free interest rate (as a percent)	1.96%	1.32%
Expected dividend yield (as a percent)	6.00%	7.00%
Expected life of the option	5 years 1 day	5 years 6 months 29 days
Summary of option activity
Options outstanding balance, beginning of period (in shares)	3,451,698
Options granted (in shares)	1,007,224
Options exercised (in shares)	(136,739)
Options forfeited (in shares)	(5,773)
Options expired (in shares)	(1,781)
Options outstanding balance, end of period (in shares)	4,314,629
Options exercisable balance (in shares)	2,126,229
Options expected to vest (in shares)	2,022,212
Weighted Average Exercise Price
Weighted average exercise price, options outstanding balance beginning of period (in dollars per share)	$ 31.79
Weighted average exercise price, options granted (in dollars per share)	36.89
Weighted average exercise price, options exercised (in dollars per share)	22.24
Weighted average exercise price, options forfeited (in dollars per share)	28.21
Weighted average exercise price, options expired (in dollars per share)	38.83
Weighted average exercise price, options outstanding balance end of period (in dollars per share)	33.29
Weighted average exercise price, options exercisable (in dollars per share)	30.09
Weighted average exercise price, options expected to vest (in dollars per share)	$ 36.41
Weighted average remaining contractual term
Weighted average remaining contractual term, options outstanding	7 years 6 months 26 days
Weighted average remaining contractual term, options exercisable	5 years 10 months 2 days
Weighted average remaining contractual term, options expected to vest	9 years 2 months 27 days
Aggregate intrinsic value
Aggregate intrinsic value, options outstanding	$ 17,780
Aggregate intrinsic value, options exercisable	15,685
Aggregate intrinsic value, options expected to vest	1,955
Aggregate intrinsic value of stock options exercised
Aggregate intrinsic value of stock options exercised	$ 1,912	$ 1,433
Employee Stock Purchase Plan
Employee Stock Purchase Plan
Percentage of market price for the purchase of shares	95.00%
Employee stock purchase plan, shares available for grant	727,594
Performance units
Dividends accrued
Accrued cash dividends	$ 324	262
Cash dividends paid	$ 205	645
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Non-vested at the beginning of the period (in shares)	438,302
Granted (in shares)	229,692
Vested (in shares)	(32,776)
Forfeited (in shares)	(132,509)
Non-vested at the end of the period (in shares)	502,709
Weighted average grant date fair value
Weighted average grant date fair value, non-vested, beginning of period (in dollars per share)	$ 33.67
Weighted average grant date fair value, granted (in dollars per share)	41.93
Weighted average grant date fair value, vested (in dollars per share)	27.60
Weighted average grant date fair value, forfeited (in dollars per share)	28.57
Weighted average grant date fair value, non-vested, end of period (in dollars per share)	$ 39.18
Total fair value of shares or units vested	$ 905	4,081
Performance units disclosure
Period of anniversary from the date of grant	3 years
Qualifying age for grant of performance units	55 years
Qualifying service period	10 years
Performance units | PUs granted in 2015
Performance units disclosure
Percentage of achievement of the predefined revenue and ROIC targets	25.00%
Performance units | Two Thousand Sixteen [Member] [Member]
Performance units disclosure
Percentage of achievement of the predefined revenue and ROIC targets	100.00%
Performance units | Two Thousand Seventeen [Member]
Performance units disclosure
Percentage of achievement of the predefined revenue and ROIC targets	100.00%
Performance units | Revenue or revenue growth and return on invested capital
Performance units disclosure
Performance period	3 years
Performance units | Market condition associated with shareholder return of common stock
Performance units disclosure
Performance period	3 years
Performance units | Minimum | Revenue or revenue growth and return on invested capital
Performance units disclosure
Percentage payout rate	0.00%
Performance units | Minimum | Market condition associated with shareholder return of common stock
Performance units disclosure
Percentage payout rate	0.00%
Performance units | Maximum | Revenue or revenue growth and return on invested capital
Performance units disclosure
Percentage payout rate	200.00%
Performance units | Maximum | Market condition associated with shareholder return of common stock
Performance units disclosure
Percentage payout rate	200.00%
Original PU Awards
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Non-vested at the beginning of the period (in shares)	559,340
Granted (in shares)	229,692
Vested (in shares)	(32,776)
Forfeited (in shares)	(3,480)
Non-vested at the end of the period (in shares)	752,776
PUs Adjustment
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Non-vested at the beginning of the period (in shares)	(121,038)
Granted (in shares)	0
Vested (in shares)	0
Forfeited (in shares)	(129,029)
Non-vested at the end of the period (in shares)	(250,067)
Restricted Stock Units
Employee stock-based awards
Accrued cash dividends	$ 683	631
Dividends accrued
Cash dividends paid	$ 1,855	1,635
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Non-vested at the beginning of the period (in shares)	1,163,393
Granted (in shares)	525,328
Vested (in shares)	(438,091)
Forfeited (in shares)	(11,597)
Non-vested at the end of the period (in shares)	1,239,033
Weighted average grant date fair value
Weighted average grant date fair value, non-vested, beginning of period (in dollars per share)	$ 33.21
Weighted average grant date fair value, granted (in dollars per share)	36.90
Weighted average grant date fair value, vested (in dollars per share)	32.02
Weighted average grant date fair value, forfeited (in dollars per share)	34.65
Weighted average grant date fair value, non-vested, end of period (in dollars per share)	$ 35.18
Total fair value of shares or units vested	$ 14,026	$ 14,978
Restricted Stock Units | Minimum
Employee stock-based awards
Award vesting period	3 years
Restricted Stock Units | Maximum
Employee stock-based awards
Award vesting period	5 years

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Summary of Significant Accounting Policies - Income Per Share, Allowance for Doubful Accounts, Income Taxes, and Concentration of Credit Risk (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) bank $ / shares shares	Mar. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) bank	Dec. 31, 2015 USD ($)
Income (Loss) Per Share-Basic and Diluted
Income (loss) from continuing operations	$ 58,844	$ 63,041
Less: Net Income (Loss) Attributable to Noncontrolling Interests	382	267
Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation)	58,462	62,774
Income (loss) from discontinued operations, net of tax	(337)	0
Net income (loss) attributable to Iron Mountain Incorporated	$ 58,125	$ 62,774
Weighted-average shares—basic | shares	263,855,000	211,526,000
Effect of dilutive potential stock options (in shares) | shares	461,761	482,388
Effect of dilutive potential restricted stock, RSUs and PUs (in shares) | shares	492,905	463,053
Weighted-average shares—diluted | shares	264,809,666	212,471,441
Earnings (Losses) per share-basic:
Income (Loss) from continuing operations (in dollars per share) | $ / shares	$ 0.22	$ 0.30
Total (loss) income discontinued operations (in dollars per share) | $ / shares	0.00	0.00
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share) | $ / shares	0.22	0.30
Earnings (Losses) per share-diluted:
Income (Loss) from continuing operations (in dollars per share) | $ / shares	0.22	0.30
Total (loss) income from discontinued operations (in dollars per share) | $ / shares	0.00	0.00
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share) | $ / shares	$ 0.22	$ 0.30
Antidilutive stock options, RSUs and PUs, excluded from the calculation (in shares) | shares	2,494,255	2,821,795
Income Taxes:
Effective tax rates (as a percent)	13.50%	15.90%
Income (Loss) From Continuing Operations Before Income Taxes, Minority Interest, and (Gain) Loss on Disposition of Real Estate	$ 68,064	$ 74,941
Federal statutory tax rate (as a percent)	35.00%	35.00%
Tax provision, increase, amount	$ 1,764
Tax provision, increase, percentage	2.50%
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	$ 7,511
Concentrations of Credit Risk
Number of global banks with cash, cash equivalent and restricted cash held on deposit | bank	7		6
Cash and cash equivalents	$ 295,628	$ 117,945	$ 236,484	$ 128,381
Money market funds and time deposits	$ 25,739		$ 22,240

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Summary of Significant Accounting Policies - Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Fair value measured on recurring basis | Quoted prices in active markets (Level 1)
Assets and liabilities carried at fair value measured on a recurring basis
Time deposits	$ 0	$ 0
Trading securities	9,958	10,181
Liability Derivatives	0
Fair value measured on recurring basis | Significant other observable inputs (Level 2)
Assets and liabilities carried at fair value measured on a recurring basis
Time deposits	25,739	22,240
Trading securities	384	478
Liability Derivatives	114
Fair value measured on recurring basis | Significant unobservable inputs (Level 3)
Assets and liabilities carried at fair value measured on a recurring basis
Time deposits	0	0
Trading securities	0	0
Liability Derivatives	0
Estimate of Fair Value Measurement [Member] | Fair value measured on recurring basis
Assets and liabilities carried at fair value measured on a recurring basis
Time deposits	25,739	22,240
Trading securities	10,342	$ 10,659
Liability Derivatives	114
Prepaid expenses and other | Foreign exchange contracts
Assets and liabilities carried at fair value measured on a recurring basis
Liability Derivatives	$ 114

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Summary of Significant Accounting Policies - Accumulated Other Comprehensive Income and Other Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accumulated other comprehensive items, net
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	$ (212,573)	$ (174,917)
Other comprehensive loss:
Foreign currency translation adjustments	51,334	23,491
Market value adjustments for securities	0	(734)
Total Other comprehensive (loss) income	51,334	22,757
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	(161,239)	(152,160)
Other Expense (Income), Net:
Total loss on foreign currency transactions	(4,164)	(12,542)
Other, net	(2,200)	605
Other (Income) Expense, Net	(6,364)	(11,937)
Foreign currency translation adjustments
Accumulated other comprehensive items, net
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	(212,573)	(175,651)
Other comprehensive loss:
Foreign currency translation adjustments	51,334	23,491
Market value adjustments for securities	0	0
Total Other comprehensive (loss) income	51,334	23,491
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	(161,239)	(152,160)
Market value adjustments for securities
Accumulated other comprehensive items, net
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	0	734
Other comprehensive loss:
Foreign currency translation adjustments	0	0
Market value adjustments for securities	0	(734)
Total Other comprehensive (loss) income	0	(734)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	$ 0	$ 0

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Summary of Significant Accounting Policies - Property, Plant and Equipment and Long-Lived Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accounting Policies [Abstract]
Capitalization of internal use computer software	$ 5,283	$ 3,403
Loss (gain) on disposal/write-down of property, plant and equipment (excluding real estate)		$ (451)

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Summary of Significant Accounting Policies - Cash dividends on RSUs (Details) - Restricted Stock Units - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Employee stock-based awards
Accrued cash dividends	$ 683	$ 631
Cash dividends paid	$ 1,855	$ 1,635

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Derivative Instruments and Hedging Activities (Details) € in Thousands, CAD in Thousands, $ in Thousands	Mar. 31, 2017 EUR (€)	Mar. 31, 2017 CAD	Mar. 31, 2017 USD ($)	Mar. 31, 2016 EUR (€)
6 3/4% Notes | Net Investment Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative instruments
Notional amount of derivatives | €	€ 49,600			€ 30,218
Derivatives used in Net Investment Hedge, Net of Tax			$ 17,131
Foreign exchange contracts | Purchases
Derivative instruments
Notional amount of derivatives | CAD		CAD 46,000
Foreign exchange contracts | Sales
Derivative instruments
Derivative, amount of hedged item			34,439
Prepaid expenses and other | Foreign exchange contracts
Derivative instruments
Liability Derivatives			$ 114

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Derivative Instruments and Hedging Activities - Fair Value of Derivatives (Details) $ in Thousands	Mar. 31, 2017 USD ($)
Foreign exchange contracts | Prepaid expenses and other
Fair value of derivative instruments
Liability Derivatives	$ 114

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Derivative Instruments and Hedging Activities - Schedule of Foreign Exchange Gains Related to Fair of Debt (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Foreign exchange (losses) gains	$ (1,072)	$ (1,342)
Less: Tax (benefit) expense on foreign exchange (losses) gains	0	0
Foreign exchange (losses) gains, net of tax	$ (1,072)	$ (1,342)

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Acquisitions (Details) $ / shares in Units, € in Thousands, $ in Thousands					1 Months Ended	3 Months Ended			12 Months Ended
	Dec. 30, 2016 EUR (€)	Dec. 30, 2016 USD ($)	May 04, 2016 USD ($)	May 02, 2016 USD ($) shares	Nov. 30, 2016 region	Mar. 31, 2017 EUR (€) acquisition	Mar. 31, 2017 USD ($) acquisition	Mar. 31, 2016 USD ($)	Dec. 31, 2016 EUR (€)	Dec. 31, 2016 USD ($)	Apr. 29, 2016 $ / shares
Business Acquisition [Line Items]
Net proceeds from Iron Mountain Divestments (see Note 10)							$ 2,423	$ 0
Goodwill							3,957,058			$ 3,905,021
Discontinued Operations, Disposed of by Sale | Initial United States Divestments
Business Acquisition [Line Items]
Disposal, consideration			$ 80,000
Net proceeds from Iron Mountain Divestments (see Note 10)			55,000
Disposal Group, Including Discontinued Operation, Contingent Receivable			25,000
Contingent receivable, net of adjustments			21,400
Contingent receivable, fair value adjustment			2,200
Contingent receivable, present value adjustment			$ 1,400
Disposal Group, Held-for-sale, Not Discontinued Operations | Australia Divestment Business And Iron Mountain Canadian Divestments [Member]
Business Acquisition [Line Items]
Disposal Group, Including Discontinued Operation, Revenue								13,376
Disposal Group, Including Discontinued Operation, Operating Income (Loss)								$ 806
Fiscal 2017 Year Acquisitions
Business Acquisition [Line Items]
Cash Acquired from Acquisition							1,631
Cash consideration							13,736
Consideration transferred							14,579
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value							843
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents							1,631
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables							1,771
Other Assets							692
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment							2,845
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets, Customer Relationship							8,222
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities							(6,208)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities							(461)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net							8,492
Goodwill							6,087
Payments for (Proceeds from) Previous Acquisition							$ 82
Storage and Records Management Company [Member]
Business Acquisition [Line Items]
Number of acquisitions | acquisition						3	3
Art Storage Company [Member]
Business Acquisition [Line Items]
Number of acquisitions | acquisition						1	1
Recall Holdings Limited [Member]
Business Acquisition [Line Items]
Cash consideration				$ 331,800
Price per outstanding share | $ / shares											$ 36.53
Consideration transferred				$ 2,166,900
Business Combination Separately Recognized Transactions Expenses And Losses Recognized, Acquisition Costs Incurred to Date							$ 140,661
Recall Holdings Limited [Member] | Common Stock
Business Acquisition [Line Items]
Acquisition, shares of common stock issued | shares				50,233,412
Santa Fe Transaction 2016 [Member]
Business Acquisition [Line Items]
Cash consideration									€ 13,500	$ 14,200
Consideration transferred	€ 15,200	$ 16,000
Business Acquisition, Number Of Regions | region					10
Santa Fe Transaction 2017 [Member]
Business Acquisition [Line Items]
Consideration transferred						€ 925	1,000
Q1 2017 Additional Acquisitions [Member]
Business Acquisition [Line Items]
Consideration transferred							13,700
Q1 2017 Additional Acquisitions [Member] | Minimum
Business Acquisition [Line Items]
Consideration transferred							2,000
Q1 2017 Additional Acquisitions [Member] | Maximum
Business Acquisition [Line Items]
Consideration transferred							$ 4,400
Customer Relationships [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life						20 years	20 years

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Acquisitions - Schedule of Purchase Price Allocation (Details) - USD ($) $ in Thousands		3 Months Ended
	May 02, 2016	Mar. 31, 2017
Fair Value of Identifiable Assets Acquired:
Non-deductible goodwill acquired during the year		$ 4,311
Recall Holdings Limited [Member]
Business Acquisition [Line Items]
Cash Paid (gross of cash acquired)	$ 331,800
Total Consideration	$ 2,166,900
Other Fiscal 2017 Year Acquisitions (excluding Recall)
Business Acquisition [Line Items]
Cash Paid (gross of cash acquired)		13,736
Total Consideration		14,579
Fair Value of Identifiable Assets Acquired:
Cash		1,631
Accounts Receivable and Prepaid Expenses		1,771
Other Assets		692
Property, Plant and Equipment		2,845
Customer Relationship Intangible Assets		8,222
Deferred Income Taxes		(461)
Total Fair Value of Identifiable Net Assets Acquired		8,492
Cash Acquired from Acquisition		$ 1,631

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Acquisitions - Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue		$ 937,952
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax		$ 58,058
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax, Per Share, Basic		$ 0.22
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax, Per Share, Diluted		$ 0.22
Income (Loss) from Continuing Operations	$ 58,844	$ 63,041
Per Share Income (Loss) from Continuing Operations - Basic (in dollars per share)	$ 0.22	$ 0.30
Per Share Income (Loss) from Continuing Operations - Diluted (in dollars per share)	$ 0.22	$ 0.30
Recall Holdings Limited [Member]
Business Acquisition [Line Items]
Business Combination Separately Recognized Transactions Expenses And Losses Recognized, Incurred to Date	$ 140,661
Disposal Group, Held-for-sale, Not Discontinued Operations | Australia Divestment Business And Iron Mountain Canadian Divestments [Member]
Business Acquisition [Line Items]
Disposal Group, Including Discontinued Operation, Revenue		$ 13,376
Disposal Group, Including Discontinued Operation, Operating Income (Loss)		$ 806

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Debt Schedule of Long Term Debt (Details) AUD in Thousands, $ in Thousands	Mar. 31, 2017 USD ($)	Mar. 31, 2017 AUD	Dec. 31, 2016 USD ($)	Sep. 28, 2016 AUD	Jul. 02, 2015 USD ($)
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount	$ 1,752		$ 1,725
Long-term Debt, Gross	6,408,716		6,319,116
Current portion of long-term debt	(421,227)		(172,975)
Long-term Debt, net of current portion	5,922,748		6,078,206
Unamortized Debt Issuance Expense	(64,741)		(67,935)
Long-term Debt	6,343,975		6,251,181
Long-term Debt, Gross, Current Maturities	421,535		172,975
Unamortized Debt Issuance Expense, Current	(308)
Long-term Debt, Current Maturities	(421,227)		(172,975)
Long Term Debt, Gross, Net of Current Portion	5,987,181		6,146,141
Unamortized Debt Issuance Expense, Net	64,433		67,935
Long-term Debt, Excluding Current Maturities	5,922,748		6,078,206
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term Debt, Gross	988,327		953,548
Fair Value	988,327		953,548
Unamortized Debt Issuance Expense	(6,800)		(7,530)
Long-term Debt	981,527		946,018
Australian Dollar Term Loan [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	186,963		177,198	AUD 250,000
Fair Value	188,715	AUD 246,875	178,923
Unamortized Debt Issuance Expense	(3,832)		(3,774)
Long-term Debt	183,131		173,424
6% Senior Notes due 2020
Debt Instrument [Line Items]
Long-term Debt, Gross	1,000,000		1,000,000
Fair Value	$ 1,046,250		$ 1,052,500
Stated interest rate (as a percent)	6.00%	6.00%	6.00%
Unamortized Debt Issuance Expense	$ (11,881)		$ (12,730)
Long-term Debt	988,119		987,270
Senior Subsidiary Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	150,045		148,792
Fair Value	$ 155,859		$ 155,860
Stated interest rate (as a percent)	6.125%	6.125%	6.125%
Unamortized Debt Issuance Expense	$ (1,561)		$ (1,635)
Long-term Debt	148,484		147,157
Senior Notes 4.375 Percent due 2021
Debt Instrument [Line Items]
Long-term Debt, Gross	500,000		500,000
Fair Value	$ 512,500		$ 511,250
Stated interest rate (as a percent)	4.375%	4.375%	4.375%
Unamortized Debt Issuance Expense	$ (7,163)		$ (7,593)
Long-term Debt	492,837		492,407
GBP Senior Notes 6.125 Percent, Due 2022
Debt Instrument [Line Items]
Long-term Debt, Gross	499,508		493,648
Fair Value	$ 529,478		$ 527,562
Stated interest rate (as a percent)	6.125%	6.125%	6.125%
Unamortized Debt Issuance Expense	$ (6,012)		$ (6,214)
Long-term Debt	493,496		487,434
6% Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	600,000		600,000
Fair Value	$ 632,280		$ 637,500
Stated interest rate (as a percent)	6.00%	6.00%	6.00%
Unamortized Debt Issuance Expense	$ (7,048)		$ (7,322)
Long-term Debt	592,952		592,678
CAD 5.375 Percent Senior Notes due 2023 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	187,557		185,990
Fair Value	$ 193,418		$ 188,780
Stated interest rate (as a percent)	5.375%	5.375%	5.375%
Unamortized Debt Issuance Expense	$ (3,405)		$ (3,498)
Long-term Debt	184,152		182,492
The 5 3/4% Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	1,000,000		1,000,000
Fair Value	$ 1,017,500		$ 1,027,500
Stated interest rate (as a percent)	5.75%	5.75%	5.75%
Unamortized Debt Issuance Expense	$ (10,186)		$ (10,529)
Long-term Debt	989,814		989,471
Senior Notes 5.375 Percent due 2026
Debt Instrument [Line Items]
Long-term Debt, Gross	250,000		250,000
Fair Value	$ 248,750		$ 242,500
Stated interest rate (as a percent)	5.375%	5.375%	5.375%
Unamortized Debt Issuance Expense	$ (3,937)		$ (4,044)
Long-term Debt	246,063		245,956
Accounts Receivable Securitization Program
Debt Instrument [Line Items]
Long-term Debt, Gross	250,000		247,000
Fair Value	250,000		247,000
Unamortized Debt Issuance Expense	(308)		(384)
Long-term Debt	249,692		246,616
Real Estate Mortgages, Capital Leases and Other
Debt Instrument [Line Items]
Long-term Debt, Gross	518,191		478,565
Fair Value	518,191		478,565
Unamortized Debt Issuance Expense	(1,239)		(1,277)
Long-term Debt	516,952		477,288
Mortgage Securitization Program [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	50,000		50,000
Fair Value	50,000		50,000
Unamortized Debt Issuance Expense	(1,369)		(1,405)
Long-term Debt	48,631		48,595
New Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Carrying amount on long-term debt	988,327
New Credit Agreement | Term Loan Facility
Debt Instrument [Line Items]
Long-term Debt, Gross	228,125		234,375		$ 250,000
Carrying amount on long-term debt	228,125
Fair Value	228,125		234,375
Unamortized Debt Issuance Expense	0		0
Long-term Debt	$ 228,125		$ 234,375

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Debt (Details) € in Thousands, AUD in Thousands, $ in Thousands				3 Months Ended
	Sep. 28, 2016 USD ($)	Sep. 28, 2016 AUD	Jul. 02, 2015 USD ($) bank	Mar. 31, 2017 EUR (€)	Mar. 31, 2017 USD ($)	Mar. 31, 2017 AUD	Dec. 31, 2016 USD ($)	Oct. 31, 2016 USD ($)	Mar. 06, 2015 USD ($)
Debt
Capital stock of subsidiaries pledged to secure debt (as a percent)				66.00%	66.00%	66.00%
Number of banks supporting New Credit Agreement | bank			25
Debt Instrument, Unamortized Discount					$ 1,752		$ 1,725
Current portion of long-term debt					421,227		172,975
Debt covenants
Dividends Limit, Percent				95.00%
Dividends Limit, Leverage Ratio Trigger				6.0
Long-term Debt, Gross					$ 6,408,716		6,319,116
Cash pool agreement, net cash position							1,700
Cash pool agreement, gross cash position							69,500
Cash pool agreement, outstanding borrowings							$ 67,800
New Credit Agreement
Debt
Average interest rate (as a percent)				3.00%	3.00%	3.00%
New Credit Agreement | Minimum
Debt
Commitment fee percentage				0.25%
New Credit Agreement | Maximum
Debt
Commitment fee percentage				0.40%
Accounts Receivable Securitization Program | Secured Debt
Debt
Maximum borrowing capacity									$ 250,000
Effective interest rate (as a percent)				1.90%	1.90%	1.90%
Accounts Receivable from Securitization					$ 250,000
Mortgage Securitization Program [Member] | Secured Debt
Debt
Maximum borrowing capacity								$ 50,000
Effective interest rate (as a percent)				3.50%	3.50%	3.50%
Accounts Receivable from Securitization					$ 50,000
QRS Cash Pool [Member]
Debt covenants
Cash pool agreement, net cash position					5,400
Cash pool agreement, gross cash position					478,200
Cash pool agreement, outstanding borrowings					472,800
TRS Cash Pool [Member]
Debt covenants
Cash pool agreement, net cash position					11,100
Cash pool agreement, gross cash position					217,300
Cash pool agreement, outstanding borrowings					$ 206,200
Credit Agreement
Debt
Capital stock of subsidiaries pledged to secure debt (as a percent)				66.00%	66.00%	66.00%
Debt covenants
Net total lease adjusted leverage ratio				5.8	5.8	5.8	5.7
Net secured debt lease adjusted leverage ratio				2.7	2.7	2.7	2.7
Bond leverage ratio, per indentures				5.5	5.5	5.5	5.2
Fixed charge coverage ratio				2.3	2.3	2.3	2.4
Credit Agreement | Minimum
Debt covenants
Fixed charge coverage ratio				1.5	1.5	1.5
Credit Agreement | Maximum
Debt covenants
Net total lease adjusted leverage ratio				6.5	6.5	6.5
Net secured debt lease adjusted leverage ratio				4.0	4.0	4.0
Bond leverage ratio, per indentures				6.5	6.5	6.5
Revolving Credit Facility
Debt
Letters of credit outstanding					$ 53,649
Period of earnings before interest, taxes, depreciation, amortization and rent expense (EBITDAR) for calculation of remaining borrowing capacity				12 months
Remaining amount available for borrowing under credit facility					708,024
Fair Value					988,327		$ 953,548
Debt covenants
Long-term Debt, Gross					988,327		953,548
Revolving Credit Facility | New Credit Agreement
Debt
Maximum borrowing capacity			$ 1,750,000
Optional additional commitments			250,000
Carrying amount on long-term debt					$ 988,327
Average interest rate (as a percent)				3.00%	3.00%	3.00%
Revolving Credit Facility | New Credit Agreement | Minimum
Debt
Effective interest rate (as a percent)				2.30%	2.30%	2.30%
Revolving Credit Facility | New Credit Agreement | Maximum
Debt
Effective interest rate (as a percent)				5.00%	5.00%	5.00%
Term Loan Facility | New Credit Agreement
Debt
Amount of quarterly installments based on the original principal (as a percentage)			3,125
Carrying amount on long-term debt					$ 228,125
Average interest rate (as a percent)				3.20%	3.20%	3.20%
Fair Value					$ 228,125		234,375
Debt covenants
Long-term Debt, Gross			$ 250,000		228,125		$ 234,375
Term Loan Facility | New Credit Agreement | USD
Debt
Carrying amount on long-term debt					$ 741,000
Term Loan Facility | New Credit Agreement | EUR
Debt
Carrying amount on long-term debt | €				€ 231,530
Senior Notes 4.375 Percent due 2021
Debt
Stated interest rate (as a percent)				4.375%	4.375%	4.375%	4.375%
Fair Value					$ 512,500		$ 511,250
Debt covenants
Long-term Debt, Gross					$ 500,000		$ 500,000
Senior Notes 5.375 Percent due 2026
Debt
Stated interest rate (as a percent)				5.375%	5.375%	5.375%	5.375%
Fair Value					$ 248,750		$ 242,500
Debt covenants
Long-term Debt, Gross					$ 250,000		$ 250,000
CAD 5.375 Percent Senior Notes due 2023 [Member]
Debt
Stated interest rate (as a percent)				5.375%	5.375%	5.375%	5.375%
Fair Value					$ 193,418		$ 188,780
Debt covenants
Long-term Debt, Gross					$ 187,557		185,990
Australian Dollar Term Loan [Member]
Debt
Amount of quarterly installments based on the original principal (as a percentage) | AUD		AUD 6,250
Effective interest rate (as a percent)				6.10%	6.10%	6.10%
Fair Value					$ 188,715	AUD 246,875	178,923
Debt covenants
Long-term Debt, Gross		AUD 250,000			$ 186,963		$ 177,198
Par percentage		99.00%
Net proceeds from sales of senior notes	$ 185,800	AUD 243,750
Australian Dollar Term Loan [Member] | BBSY
Debt covenants
Basis spread on variable rate	4.30%	4.30%

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Debt Covenant Ratios (Details) - Credit Agreement	Mar. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Net total lease adjusted leverage ratio	5.8	5.7
Net secured debt lease adjusted leverage ratio	2.7	2.7
Bond leverage ratio, per indentures	5.5	5.2
Fixed charge coverage ratio	2.3	2.4
Maximum
Debt Instrument [Line Items]
Net total lease adjusted leverage ratio	6.5
Net secured debt lease adjusted leverage ratio	4.0
Bond leverage ratio, per indentures	6.5
Minimum
Debt Instrument [Line Items]
Fixed charge coverage ratio	1.5

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Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors - Balance Sheets (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Consolidating financial statements
Noncontrolling Interest, Ownership Percentage by Parent	100.00%
Current Assets:
Cash and Cash Equivalents	$ 295,628	$ 236,484	$ 117,945	$ 128,381
Accounts Receivable	721,030	691,249
Intercompany Receivable	0	0
Other Current Assets	181,979	184,374
Total Current Assets	1,198,637	1,112,107
Property, Plant and Equipment, Net	3,111,740	3,083,326
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	0	0
Investment in Subsidiaries	0	0
Goodwill	3,957,058	3,905,021
Other	1,404,699	1,386,346
Total Other Assets, Net	5,361,757	5,291,367
Total Assets	9,672,134	9,486,800
Liabilities and Equity
Intercompany Payable	0	0
Borrowings under cash pools	0
Current Portion of Long-term Debt	421,227	172,975
Total Other Current Liabilities	997,242	873,582
Long-term Debt, Net of Current Portion	5,922,748	6,078,206
Long-term Notes Payable to Affiliates and Intercompany Payable	0	0
Other Long-term Liabilities	359,835	370,669
Redeemable Noncontrolling Interest	67,308	54,697
Commitments and Contingencies (see Note 8)
Total Iron Mountain Incorporated Stockholders' Equity	1,902,725	1,936,547
Noncontrolling Interests	1,049	124
Total Equity	1,903,774	1,936,671	521,144	528,607
Total Liabilities and Equity	9,672,134	9,486,800
Eliminations
Current Assets:
Cash and Cash Equivalents	(185,822)	0	0	0
Accounts Receivable	0	0
Intercompany Receivable	(938,239)	(674,122)
Other Current Assets	(29)	(29)
Total Current Assets	(1,124,090)	(674,151)
Property, Plant and Equipment, Net	0	0
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	(4,215,179)	(4,015,330)
Investment in Subsidiaries	(2,657,384)	(2,471,882)
Goodwill	0	0
Other	0	0
Total Other Assets, Net	(6,872,563)	(6,487,212)
Total Assets	(7,996,653)	(7,161,363)
Liabilities and Equity
Intercompany Payable	(938,239)	(674,122)
Borrowings under cash pools	(185,822)
Current Portion of Long-term Debt	(29)	(29)
Total Other Current Liabilities	0	0
Long-term Debt, Net of Current Portion	0	0
Long-term Notes Payable to Affiliates and Intercompany Payable	(4,215,179)	(4,015,330)
Other Long-term Liabilities	0	0
Redeemable Noncontrolling Interest	0	0
Total Iron Mountain Incorporated Stockholders' Equity	(2,657,384)	(2,471,882)
Noncontrolling Interests	0	0
Total Equity	(2,657,384)	(2,471,882)
Total Liabilities and Equity	(7,996,653)	(7,161,363)
Parent | Reportable legal entities
Current Assets:
Cash and Cash Equivalents	470	2,405	554	151
Accounts Receivable	0	0
Intercompany Receivable	0	0
Other Current Assets	114	0
Total Current Assets	584	2,405
Property, Plant and Equipment, Net	438	483
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	4,214,179	4,014,330
Investment in Subsidiaries	1,750,210	1,659,518
Goodwill	0	0
Other	0	0
Total Other Assets, Net	5,964,389	5,673,848
Total Assets	5,965,411	5,676,736
Liabilities and Equity
Intercompany Payable	698,066	558,492
Borrowings under cash pools	0
Current Portion of Long-term Debt	0	0
Total Other Current Liabilities	199,038	58,478
Long-term Debt, Net of Current Portion	3,159,864	3,093,388
Long-term Notes Payable to Affiliates and Intercompany Payable	1,000	1,000
Other Long-term Liabilities	0	0
Redeemable Noncontrolling Interest	4,718	28,831
Total Iron Mountain Incorporated Stockholders' Equity	1,902,725	1,936,547
Noncontrolling Interests	0	0
Total Equity	1,902,725	1,936,547
Total Liabilities and Equity	5,965,411	5,676,736
Guarantors
Liabilities and Equity
Deposits	58,200
Guarantors | Reportable legal entities
Current Assets:
Cash and Cash Equivalents	64,550	23,380	5,297	7,803
Accounts Receivable	36,545	53,364
Intercompany Receivable	904,316	653,008
Other Current Assets	79,337	70,660
Total Current Assets	1,084,748	800,412
Property, Plant and Equipment, Net	1,810,787	1,804,991
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	1,000	1,000
Investment in Subsidiaries	785,770	699,411
Goodwill	2,584,712	2,602,784
Other	762,098	765,698
Total Other Assets, Net	4,133,580	4,068,893
Total Assets	7,029,115	6,674,296
Liabilities and Equity
Intercompany Payable	0	0
Borrowings under cash pools	138,693
Current Portion of Long-term Debt	45,837	51,456
Total Other Current Liabilities	454,823	488,194
Long-term Debt, Net of Current Portion	1,014,038	1,055,642
Long-term Notes Payable to Affiliates and Intercompany Payable	4,214,179	4,014,330
Other Long-term Liabilities	138,228	127,715
Redeemable Noncontrolling Interest	0	0
Total Iron Mountain Incorporated Stockholders' Equity	1,023,317	936,959
Noncontrolling Interests	0	0
Total Equity	1,023,317	936,959
Total Liabilities and Equity	7,029,115	6,674,296
Canada Company | Reportable legal entities
Current Assets:
Cash and Cash Equivalents	5,763	17,110	3,983	13,182
Accounts Receivable	36,215	37,781
Intercompany Receivable	33,923	21,114
Other Current Assets	6,325	4,967
Total Current Assets	82,226	80,972
Property, Plant and Equipment, Net	157,814	159,391
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	0	0
Investment in Subsidiaries	35,948	35,504
Goodwill	217,837	217,422
Other	49,211	49,570
Total Other Assets, Net	302,996	302,496
Total Assets	543,036	542,859
Liabilities and Equity
Intercompany Payable	0	0
Borrowings under cash pools	0
Current Portion of Long-term Debt	0	0
Total Other Current Liabilities	41,747	40,442
Long-term Debt, Net of Current Portion	338,456	335,410
Long-term Notes Payable to Affiliates and Intercompany Payable	0	0
Other Long-term Liabilities	41,429	54,054
Redeemable Noncontrolling Interest	0	0
Total Iron Mountain Incorporated Stockholders' Equity	121,404	112,953
Noncontrolling Interests	0	0
Total Equity	121,404	112,953
Total Liabilities and Equity	543,036	542,859
Non-Guarantors
Liabilities and Equity
Deposits	144,100
Non-Guarantors | Reportable legal entities
Current Assets:
Cash and Cash Equivalents	410,667	193,589	$ 108,111	$ 107,245
Accounts Receivable	648,270	600,104
Intercompany Receivable	0	0
Other Current Assets	96,232	108,776
Total Current Assets	1,155,169	902,469
Property, Plant and Equipment, Net	1,142,701	1,118,461
Other Assets, Net:
Long-term Notes Receivable from Affiliates and Intercompany Receivable	0	0
Investment in Subsidiaries	85,456	77,449
Goodwill	1,154,509	1,084,815
Other	593,390	571,078
Total Other Assets, Net	1,833,355	1,733,342
Total Assets	4,131,225	3,754,272
Liabilities and Equity
Intercompany Payable	240,173	115,630
Borrowings under cash pools	47,129
Current Portion of Long-term Debt	375,419	121,548
Total Other Current Liabilities	301,634	286,468
Long-term Debt, Net of Current Portion	1,410,390	1,593,766
Long-term Notes Payable to Affiliates and Intercompany Payable	0	0
Other Long-term Liabilities	180,178	188,900
Redeemable Noncontrolling Interest	62,590	25,866
Total Iron Mountain Incorporated Stockholders' Equity	1,512,663	1,421,970
Noncontrolling Interests	1,049	124
Total Equity	1,513,712	1,422,094
Total Liabilities and Equity	$ 4,131,225	$ 3,754,272

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Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors - Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues:
Storage Rental	$ 572,279	$ 461,211
Service	366,597	289,479
Intercompany Service	0	0
Total Revenues	938,876	750,690
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	426,707	326,105
Selling, General and Administrative	240,166	207,766
Intercompany Service Cost of Sales	0	0
Depreciation and Amortization	124,707	87,204
Loss (Gain) on Disposal/Write-down of Property, Plant and Equipment (Excluding Real Estate), net	(459)	(451)
Total Operating Expenses	791,121	620,624
Operating Income (Loss)	147,755	130,066
Interest Expense (Income), Net	86,055	67,062
Other (Income) Expense, Net	(6,364)	(11,937)
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	68,064	74,941
Provision (Benefit) for Income Taxes	9,220	11,900
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	0	0
Income (Loss) from Continuing Operations	58,844	63,041
(Loss) Income from Discontinued Operations, Net of Tax	(337)	0
Net income (loss)	58,507	63,041
Less: Net Income (Loss) Attributable to Noncontrolling Interests	382	267
Net income (loss) attributable to Iron Mountain Incorporated	58,125	62,774
Net income (loss)	58,507	63,041
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	50,784	23,978
Market Value Adjustments for Securities	0	(734)
Equity in Other Comprehensive Income (Loss) of Subsidiaries	0	0
Total Other Comprehensive Income (Loss)	50,784	23,244
Comprehensive Income (Loss)	109,291	86,285
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	(168)	754
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	109,459	85,531
Eliminations
Revenues:
Storage Rental	0	0
Service	0	0
Intercompany Service	(23,439)	(18,358)
Total Revenues	(23,439)	(18,358)
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	0	0
Selling, General and Administrative	0	0
Intercompany Service Cost of Sales	(23,439)	(18,358)
Depreciation and Amortization	0	0
Loss (Gain) on Disposal/Write-down of Property, Plant and Equipment (Excluding Real Estate), net	0	0
Total Operating Expenses	(23,439)	(18,358)
Operating Income (Loss)	0	0
Interest Expense (Income), Net	0	0
Other (Income) Expense, Net	0	0
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	0	0
Provision (Benefit) for Income Taxes	0	0
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	133,499	130,634
Income (Loss) from Continuing Operations	(133,499)
(Loss) Income from Discontinued Operations, Net of Tax	0
Net income (loss)	(133,499)	(130,634)
Less: Net Income (Loss) Attributable to Noncontrolling Interests	0	0
Net income (loss) attributable to Iron Mountain Incorporated	(133,499)	(130,634)
Net income (loss)	(133,499)	(130,634)
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	0	0
Market Value Adjustments for Securities		0
Equity in Other Comprehensive Income (Loss) of Subsidiaries	(81,868)	(50,648)
Total Other Comprehensive Income (Loss)	(81,868)	(50,648)
Comprehensive Income (Loss)	(215,367)	(181,282)
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	0	0
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	(215,367)	(181,282)
Parent | Reportable legal entities
Revenues:
Storage Rental	0	0
Service	0	0
Intercompany Service	0	0
Total Revenues	0	0
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	0	0
Selling, General and Administrative	79	72
Intercompany Service Cost of Sales	0	0
Depreciation and Amortization	46	45
Loss (Gain) on Disposal/Write-down of Property, Plant and Equipment (Excluding Real Estate), net	0	0
Total Operating Expenses	125	117
Operating Income (Loss)	(125)	(117)
Interest Expense (Income), Net	42,784	39,984
Other (Income) Expense, Net	81	886
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	(42,990)	(40,987)
Provision (Benefit) for Income Taxes	0	0
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(101,115)	(103,761)
Income (Loss) from Continuing Operations	58,125
(Loss) Income from Discontinued Operations, Net of Tax	0
Net income (loss)	58,125	62,774
Less: Net Income (Loss) Attributable to Noncontrolling Interests	0	0
Net income (loss) attributable to Iron Mountain Incorporated	58,125	62,774
Net income (loss)	58,125	62,774
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	(1,072)	(1,342)
Market Value Adjustments for Securities		0
Equity in Other Comprehensive Income (Loss) of Subsidiaries	52,406	24,099
Total Other Comprehensive Income (Loss)	51,334	22,757
Comprehensive Income (Loss)	109,459	85,531
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	0	0
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	109,459	85,531
Guarantors | Reportable legal entities
Revenues:
Storage Rental	349,351	313,619
Service	218,209	188,908
Intercompany Service	1,097	1,013
Total Revenues	568,657	503,540
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	239,329	208,154
Selling, General and Administrative	162,705	150,019
Intercompany Service Cost of Sales	6,606	3,354
Depreciation and Amortization	76,161	56,926
Loss (Gain) on Disposal/Write-down of Property, Plant and Equipment (Excluding Real Estate), net	(548)	(570)
Total Operating Expenses	484,253	417,883
Operating Income (Loss)	84,404	85,657
Interest Expense (Income), Net	(3,279)	(8,509)
Other (Income) Expense, Net	2,519	3,456
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	85,164	90,710
Provision (Benefit) for Income Taxes	12,744	9,070
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(23,413)	(22,374)
Income (Loss) from Continuing Operations	95,833
(Loss) Income from Discontinued Operations, Net of Tax	198
Net income (loss)	96,031	104,014
Less: Net Income (Loss) Attributable to Noncontrolling Interests	0	0
Net income (loss) attributable to Iron Mountain Incorporated	96,031	104,014
Net income (loss)	96,031	104,014
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	0	0
Market Value Adjustments for Securities		(734)
Equity in Other Comprehensive Income (Loss) of Subsidiaries	28,540	24,099
Total Other Comprehensive Income (Loss)	28,540	23,365
Comprehensive Income (Loss)	124,571	127,379
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	0	0
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	124,571	127,379
Canada Company | Reportable legal entities
Revenues:
Storage Rental	32,006	27,605
Service	16,050	14,642
Intercompany Service	0	0
Total Revenues	48,056	42,247
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	7,550	6,790
Selling, General and Administrative	3,561	3,373
Intercompany Service Cost of Sales	15,736	13,991
Depreciation and Amortization	4,238	3,079
Loss (Gain) on Disposal/Write-down of Property, Plant and Equipment (Excluding Real Estate), net	2	6
Total Operating Expenses	31,087	27,239
Operating Income (Loss)	16,969	15,008
Interest Expense (Income), Net	11,670	10,034
Other (Income) Expense, Net	(27)	(20)
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	5,326	4,994
Provision (Benefit) for Income Taxes	(3,488)	1,866
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(157)	(1,371)
Income (Loss) from Continuing Operations	8,971
(Loss) Income from Discontinued Operations, Net of Tax	0
Net income (loss)	8,971	4,499
Less: Net Income (Loss) Attributable to Noncontrolling Interests	0	0
Net income (loss) attributable to Iron Mountain Incorporated	8,971	4,499
Net income (loss)	8,971	4,499
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	635	1,789
Market Value Adjustments for Securities		0
Equity in Other Comprehensive Income (Loss) of Subsidiaries	287	661
Total Other Comprehensive Income (Loss)	922	2,450
Comprehensive Income (Loss)	9,893	6,949
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	0	0
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	9,893	6,949
Non-Guarantors | Reportable legal entities
Revenues:
Storage Rental	190,922	119,987
Service	132,338	85,929
Intercompany Service	22,342	17,345
Total Revenues	345,602	223,261
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	179,828	111,161
Selling, General and Administrative	73,821	54,302
Intercompany Service Cost of Sales	1,097	1,013
Depreciation and Amortization	44,262	27,154
Loss (Gain) on Disposal/Write-down of Property, Plant and Equipment (Excluding Real Estate), net	87	113
Total Operating Expenses	299,095	193,743
Operating Income (Loss)	46,507	29,518
Interest Expense (Income), Net	34,880	25,553
Other (Income) Expense, Net	(8,937)	(16,259)
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	20,564	20,224
Provision (Benefit) for Income Taxes	(36)	964
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(8,814)	(3,128)
Income (Loss) from Continuing Operations	29,414
(Loss) Income from Discontinued Operations, Net of Tax	(535)
Net income (loss)	28,879	22,388
Less: Net Income (Loss) Attributable to Noncontrolling Interests	382	267
Net income (loss) attributable to Iron Mountain Incorporated	28,497	22,121
Net income (loss)	28,879	22,388
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	51,221	23,531
Market Value Adjustments for Securities		0
Equity in Other Comprehensive Income (Loss) of Subsidiaries	635	1,789
Total Other Comprehensive Income (Loss)	51,856	25,320
Comprehensive Income (Loss)	80,735	47,708
Comprehensive Income (Loss) Attributable to Noncontrolling Interests	(168)	754
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$ 80,903	$ 46,954

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Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors - Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	$ 122,174	$ 81,118
Cash Flows from Operating Activities—Discontinued Operations	(337)	0
Cash Flows from Operating Activities	121,837	81,118
Cash Flows from Investing Activities:
Capital expenditures	(73,202)	(80,852)
Cash paid for acquisitions, net of cash acquired	(12,187)	(19,340)
Intercompany loans to subsidiaries	0	0
Investment in subsidiaries	0	0
Acquisitions of customer relationships and customer inducements	21,403	7,258
Net proceeds from Iron Mountain Divestments (see Note 10)	2,423	0
Proceeds from sales of property and equipment and other, net (including real estate)	66	169
Cash Flows from Investing Activities—Continuing Operations	(104,303)	(107,281)
Cash Flows from Investing Activities—Discontinued Operations	0	0
Cash Flows from Investing Activities	(104,303)	(107,281)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(2,682,348)	(2,384,215)
Proceeds from revolving credit and term loan facilities and other debt	2,714,783	2,509,845
Borrowings under cash pools	0
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	10,668	885
Intercompany loans from parent	0	0
Equity contribution from parent	0	0
Parent cash dividends	(2,060)	(104,931)
Net (payments) proceeds associated with employee stock-based awards	(4,308)	(1,975)
Excess tax (deficiency) benefits from stock-based compensation	0	(348)
Payment of debt financing and stock issuance costs	(73)	0
Cash Flows from Financing Activities—Continuing Operations	36,662	19,261
Cash Flows from Financing Activities—Discontinued Operations	0	0
Net Cash Provided by (Used in) Financing Activities	36,662	19,261
Effect of exchange rates on cash and cash equivalents	4,948	(3,534)
Increase (Decrease) in cash and cash equivalents	59,144	(10,436)
Cash and cash equivalents, beginning of period	236,484	128,381
Cash and cash equivalents, end of period	295,628	117,945
Eliminations
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	0
Cash Flows from Operating Activities—Discontinued Operations	0
Cash Flows from Operating Activities	0	0
Cash Flows from Investing Activities:
Capital expenditures	0	0
Cash paid for acquisitions, net of cash acquired	0	0
Intercompany loans to subsidiaries	74,472	(198,429)
Investment in subsidiaries	16,170	3,170
Acquisitions of customer relationships and customer inducements	0	0
Net proceeds from Iron Mountain Divestments (see Note 10)	0
Proceeds from sales of property and equipment and other, net (including real estate)	0	0
Cash Flows from Investing Activities—Continuing Operations	90,642
Cash Flows from Investing Activities—Discontinued Operations	0
Cash Flows from Investing Activities	90,642	(195,259)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	0	0
Proceeds from revolving credit and term loan facilities and other debt	0	0
Borrowings under cash pools	(185,822)
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	0	0
Intercompany loans from parent	(74,472)	198,429
Equity contribution from parent	(16,170)	(3,170)
Parent cash dividends	0	0
Net (payments) proceeds associated with employee stock-based awards	0	0
Excess tax (deficiency) benefits from stock-based compensation		0
Payment of debt financing and stock issuance costs	0
Cash Flows from Financing Activities—Continuing Operations	(276,464)	195,259
Cash Flows from Financing Activities—Discontinued Operations	0
Net Cash Provided by (Used in) Financing Activities	(276,464)
Effect of exchange rates on cash and cash equivalents	0	0
Increase (Decrease) in cash and cash equivalents	(185,822)	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	(185,822)	0
Parent | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	(41,288)
Cash Flows from Operating Activities—Discontinued Operations	0
Cash Flows from Operating Activities	(41,288)	(48,737)
Cash Flows from Investing Activities:
Capital expenditures	0	0
Cash paid for acquisitions, net of cash acquired	0	0
Intercompany loans to subsidiaries	(1,187)	166,442
Investment in subsidiaries	(16,170)	(1,585)
Acquisitions of customer relationships and customer inducements	0	0
Net proceeds from Iron Mountain Divestments (see Note 10)	0
Proceeds from sales of property and equipment and other, net (including real estate)	0	0
Cash Flows from Investing Activities—Continuing Operations	(17,357)
Cash Flows from Investing Activities—Discontinued Operations	0
Cash Flows from Investing Activities	(17,357)	164,857
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(31,733)	(8,463)
Proceeds from revolving credit and term loan facilities and other debt	94,811	0
Borrowings under cash pools	0
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	0	0
Intercompany loans from parent	0	0
Equity contribution from parent	0	0
Parent cash dividends	(2,060)	(104,931)
Net (payments) proceeds associated with employee stock-based awards	(4,308)	(1,975)
Excess tax (deficiency) benefits from stock-based compensation		(348)
Payment of debt financing and stock issuance costs	0
Cash Flows from Financing Activities—Continuing Operations	56,710	(115,717)
Cash Flows from Financing Activities—Discontinued Operations	0
Net Cash Provided by (Used in) Financing Activities	56,710
Effect of exchange rates on cash and cash equivalents	0	0
Increase (Decrease) in cash and cash equivalents	(1,935)	403
Cash and cash equivalents, beginning of period	2,405	151
Cash and cash equivalents, end of period	470	554
Guarantors | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	136,411
Cash Flows from Operating Activities—Discontinued Operations	198
Cash Flows from Operating Activities	136,609	121,636
Cash Flows from Investing Activities:
Capital expenditures	(53,175)	(61,886)
Cash paid for acquisitions, net of cash acquired	(6,380)	0
Intercompany loans to subsidiaries	(72,807)	31,987
Investment in subsidiaries	0	(1,585)
Acquisitions of customer relationships and customer inducements	20,653	4,733
Net proceeds from Iron Mountain Divestments (see Note 10)	0
Proceeds from sales of property and equipment and other, net (including real estate)	93	50
Cash Flows from Investing Activities—Continuing Operations	(152,922)
Cash Flows from Investing Activities—Discontinued Operations	0
Cash Flows from Investing Activities	(152,922)	(36,167)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(1,495,558)	(1,422,545)
Proceeds from revolving credit and term loan facilities and other debt	1,423,653	1,500,499
Borrowings under cash pools	138,693
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	0	0
Intercompany loans from parent	(9,305)	(167,514)
Equity contribution from parent	0	1,585
Parent cash dividends	0	0
Net (payments) proceeds associated with employee stock-based awards	0	0
Excess tax (deficiency) benefits from stock-based compensation		0
Payment of debt financing and stock issuance costs	0
Cash Flows from Financing Activities—Continuing Operations	57,483	(87,975)
Cash Flows from Financing Activities—Discontinued Operations	0
Net Cash Provided by (Used in) Financing Activities	57,483
Effect of exchange rates on cash and cash equivalents	0	0
Increase (Decrease) in cash and cash equivalents	41,170	(2,506)
Cash and cash equivalents, beginning of period	23,380	7,803
Cash and cash equivalents, end of period	64,550	5,297
Canada Company | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	5,291
Cash Flows from Operating Activities—Discontinued Operations	(535)
Cash Flows from Operating Activities	4,756	6,477
Cash Flows from Investing Activities:
Capital expenditures	(2,555)	(1,007)
Cash paid for acquisitions, net of cash acquired	0	130
Intercompany loans to subsidiaries	0	0
Investment in subsidiaries	0	0
Acquisitions of customer relationships and customer inducements	271	0
Net proceeds from Iron Mountain Divestments (see Note 10)	0
Proceeds from sales of property and equipment and other, net (including real estate)	2	0
Cash Flows from Investing Activities—Continuing Operations	(2,824)
Cash Flows from Investing Activities—Discontinued Operations	0
Cash Flows from Investing Activities	(2,824)	(877)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(71)	(383,896)
Proceeds from revolving credit and term loan facilities and other debt	0	370,816
Borrowings under cash pools	0
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	0	0
Intercompany loans from parent	(12,680)	(1,111)
Equity contribution from parent	0	0
Parent cash dividends	0	0
Net (payments) proceeds associated with employee stock-based awards	0	0
Excess tax (deficiency) benefits from stock-based compensation		0
Payment of debt financing and stock issuance costs	(73)
Cash Flows from Financing Activities—Continuing Operations	(12,824)	(14,191)
Cash Flows from Financing Activities—Discontinued Operations	0
Net Cash Provided by (Used in) Financing Activities	(12,824)
Effect of exchange rates on cash and cash equivalents	(455)	(608)
Increase (Decrease) in cash and cash equivalents	(11,347)	(9,199)
Cash and cash equivalents, beginning of period	17,110	13,182
Cash and cash equivalents, end of period	5,763	3,983
Non-Guarantors | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations	21,760
Cash Flows from Operating Activities—Discontinued Operations	0
Cash Flows from Operating Activities	21,760	1,742
Cash Flows from Investing Activities:
Capital expenditures	(17,472)	(17,959)
Cash paid for acquisitions, net of cash acquired	(5,807)	(19,470)
Intercompany loans to subsidiaries	(478)	0
Investment in subsidiaries	0	0
Acquisitions of customer relationships and customer inducements	479	2,525
Net proceeds from Iron Mountain Divestments (see Note 10)	2,423
Proceeds from sales of property and equipment and other, net (including real estate)	(29)	119
Cash Flows from Investing Activities—Continuing Operations	(21,842)
Cash Flows from Investing Activities—Discontinued Operations	0
Cash Flows from Investing Activities	(21,842)	(39,835)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(1,154,986)	(569,311)
Proceeds from revolving credit and term loan facilities and other debt	1,196,319	638,530
Borrowings under cash pools	47,129
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	10,668	885
Intercompany loans from parent	96,457	(29,804)
Equity contribution from parent	16,170	1,585
Parent cash dividends	0	0
Net (payments) proceeds associated with employee stock-based awards	0	0
Excess tax (deficiency) benefits from stock-based compensation		0
Payment of debt financing and stock issuance costs	0
Cash Flows from Financing Activities—Continuing Operations	211,757	41,885
Cash Flows from Financing Activities—Discontinued Operations	0
Net Cash Provided by (Used in) Financing Activities	211,757
Effect of exchange rates on cash and cash equivalents	5,403	(2,926)
Increase (Decrease) in cash and cash equivalents	217,078	866
Cash and cash equivalents, beginning of period	193,589	107,245
Cash and cash equivalents, end of period	$ 410,667	$ 108,111

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Segment Information - Additional Information (Details)	3 Months Ended
	Mar. 31, 2017 segment
Segment Reporting [Abstract]
Number of operating segments	5

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Segment Information - Segment Reporting Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Segment information
Unamortized Debt Issuance Expense	$ 64,741		$ 67,935
Total Revenues	938,876	$ 750,690
Depreciation and Amortization	124,707	87,204
Depreciation	99,592	75,390
Amortization	25,115	11,814
Adjusted EBITDA	292,574	235,146
Total Assets	9,672,134		$ 9,486,800
Expenditures for Segment Assets	106,792	107,450
Capital Expenditures	73,202	80,852
Cash Paid for Acquisitions, Net of Cash Acquired	12,187	19,340
Acquisitions of customer relationships and customer inducements	21,403	7,258
North American Records and Information Management business
Segment information
Total Revenues	507,597	444,681
Depreciation and Amortization	60,535	45,350
Depreciation	51,952	40,255
Amortization	8,583	5,095
Adjusted EBITDA	209,530	176,557
Expenditures for Segment Assets	51,888	46,666
Capital Expenditures	26,578	42,088
Cash Paid for Acquisitions, Net of Cash Acquired	4,379	(130)
Acquisitions of customer relationships and customer inducements	20,931	4,708
North American Data Management Business
Segment information
Total Revenues	106,950	96,343
Depreciation and Amortization	8,933	5,670
Depreciation	6,673	5,422
Amortization	2,260	248
Adjusted EBITDA	55,912	53,460
Expenditures for Segment Assets	8,737	4,827
Capital Expenditures	8,737	4,827
Cash Paid for Acquisitions, Net of Cash Acquired	0	0
Acquisitions of customer relationships and customer inducements	0	0
Western European Business
Segment information
Total Revenues	120,072	93,876
Depreciation and Amortization	14,297	11,251
Depreciation	10,888	8,671
Amortization	3,409	2,580
Adjusted EBITDA	34,142	31,946
Expenditures for Segment Assets	5,025	6,060
Capital Expenditures	4,898	4,059
Cash Paid for Acquisitions, Net of Cash Acquired	0	0
Acquisitions of customer relationships and customer inducements	127	2,001
Other International Business
Segment information
Total Revenues	189,241	101,341
Depreciation and Amortization	27,676	14,286
Depreciation	19,305	10,902
Amortization	8,371	3,384
Adjusted EBITDA	55,347	21,576
Expenditures for Segment Assets	18,620	32,156
Capital Expenditures	12,467	12,162
Cash Paid for Acquisitions, Net of Cash Acquired	5,808	19,470
Acquisitions of customer relationships and customer inducements	345	524
Corporate and Other
Segment information
Total Revenues	15,016	14,449
Depreciation and Amortization	13,266	10,647
Depreciation	10,774	10,140
Amortization	2,492	507
Adjusted EBITDA	(62,357)	(48,393)
Expenditures for Segment Assets	22,522	17,741
Capital Expenditures	20,522	17,716
Cash Paid for Acquisitions, Net of Cash Acquired	2,000	0
Acquisitions of customer relationships and customer inducements	$ 0	$ 25

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Segment Information - Reconciliation to Income from Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Business Acquisition [Line Items]
Provision (Benefit) for Income Taxes	$ 9,220	$ 11,900
Reconciliation of Adjusted EBITDA to income from continuing operations
Adjusted EBITDA	292,574	235,146
Less: Depreciation and Amortization	124,707	87,204
(Gain) Loss on disposal/write-down of property, plant and equipment (excluding real estate), net	(459)	(451)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	58,844	63,041
Interest Expense (Income), Net	86,055	67,062
Other (Income) Expense, Net	(6,364)	(11,937)
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	68,064	74,941
Recall Holdings Limited [Member]
Reconciliation of Adjusted EBITDA to income from continuing operations
Recall Costs	$ 20,571	$ 18,327

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Commitments and Contingencies (Details) € in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017 EUR (€) customer lawsuit	Mar. 31, 2017 USD ($) customer lawsuit	Jan. 31, 2015 customer claim box
Buenos Aires, Argentina
Commitments and Contingencies
Maximum facility revenue as a percentage of consolidated revenues	0.50%	0.50%
Insurance Settlement
Commitments and Contingencies
Reasonably possible additional losses | $		$ 20,000
Italy Fire
Commitments and Contingencies
Number of customer lawsuits | customer	5	5
Number of customer lawsuits settled | lawsuit	4	4
Loss Contingency, Pending Claims, Number | lawsuit	1	1
Loss Contingency, Damages Sought, Value | €	€ 42,600
Brooklyn Fire
Commitments and Contingencies
Loss Contingency, Pending Claims, Number | claim			3
Loss Contingency, Number Customer-Owned Items Lost | box			900,000
Loss Contingency, Number Of Customers Impacted | customer			1,200

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Stockholders' Equity Matters - Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Thousands											3 Months Ended
	Apr. 03, 2017	Feb. 15, 2017	Dec. 30, 2016	Oct. 31, 2016	Sep. 30, 2016	Jul. 27, 2016	Jun. 24, 2016	May 25, 2016	Mar. 21, 2016	Feb. 17, 2016	Mar. 31, 2017	Mar. 31, 2016
Equity [Abstract]
Dividends Declared per Common Share (in dollars per share)		$ 0.55		$ 0.55		$ 0.485		$ 0.4850		$ 0.4850	$ 0.5504	$ 0.4853
Dividends, Common Stock	$ 145,235		$ 145,006		$ 127,737		$ 127,469		$ 102,651		$ 145,427	$ 103,088

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Divestments (Details) - USD ($) $ in Thousands		3 Months Ended
	May 04, 2016	Mar. 31, 2017	Mar. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from divestment		$ 2,423	$ 0
Initial United States Divestments | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal, consideration	$ 80,000
Cash proceeds from divestment	55,000
Additional cash receivable, contingent consideration	$ 25,000

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Divestments - Results of Operations, Recall Divestments (Details) £ in Thousands, AUD in Thousands, $ in Thousands				3 Months Ended
	Dec. 29, 2016 USD ($)	Oct. 31, 2016 AUD	May 04, 2016 USD ($)	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Dec. 09, 2016 USD ($)	Dec. 09, 2016 GBP (£)	Oct. 31, 2016 USD ($)	Oct. 31, 2016 AUD
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net proceeds from Iron Mountain Divestments (see Note 10)				$ 2,423	$ 0
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax				(429)
Discontinued Operation, Tax Effect of Discontinued Operation				(92)
Income (loss) from discontinued operations, net of tax				(337)	$ 0
Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations, before benefit for income taxes				429
Seattle/Atlanta Divestments | Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax				239
Discontinued Operation, Tax Effect of Discontinued Operation				41
Income (loss) from discontinued operations, net of tax				198
Recall Canadian Divestments | Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax				(668)
Discontinued Operation, Tax Effect of Discontinued Operation				(133)
Income (loss) from discontinued operations, net of tax				(535)
UK Divestments | Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax				0
Discontinued Operation, Tax Effect of Discontinued Operation				0
Income (loss) from discontinued operations, net of tax				0
UK Divestments | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration						$ 2,200	£ 1,800
Initial United States Divestments | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Contingent Consideration Receivable, Present Value Adjustment			$ 1,400
Nontrade Receivables				22,000
Disposal Group, Including Discontinued Operation, Contingent Consideration Receivable, Net of Adjustments			21,400
Disposal Group, Including Discontinued Operation, Contingent Consideration Receivable, Fair Value Adjustment			2,200
Net proceeds from Iron Mountain Divestments (see Note 10)			55,000
Disposal Group, Including Discontinued Operation, Contingent Receivable			25,000
Disposal Group, Including Discontinued Operation, Consideration			$ 80,000
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax				0
Discontinued Operation, Tax Effect of Discontinued Operation				0
Income (loss) from discontinued operations, net of tax				$ 0
ARKIVE, Inc. Sale | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net proceeds from Iron Mountain Divestments (see Note 10)	$ 45,000
Disposal Group, Including Discontinued Operation, Consideration	$ 50,000
Australia Divestment Business | Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net proceeds from Iron Mountain Divestments (see Note 10) | AUD		AUD 35,000
Disposal Group, Including Discontinued Operation, Consideration								$ 53,200	AUD 70,000
Noncash or Part Noncash Divestiture, Amount of Consideration Received | AUD		AUD 35,000
Noncash or Part Noncash Divestiture, Amount of Consideration Received, Note Receivable, Stated Interest Rate								3.30%	3.30%

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Recall Costs (Details) - Recall Holdings Limited [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Business Combination, Separately Recognized Transactions [Line Items]
Restructuring Reserve	$ 4,507	$ 4,914
Restructuring Charges	5,147
Restructuring Reserve, Accrual Adjustment	(230)
Payments for Restructuring	(5,371)
Restructuring Reserve, Foreign Currency Translation Gain (Loss)	$ 47

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Recall Costs - Recall Costs Included in Statements of Operations (Details) - Recall Holdings Limited [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Business Combination, Separately Recognized Transactions [Line Items]
Total Recall Costs	$ 20,571	$ 18,327
Cost of sales (excluding depreciation and amortization)
Business Combination, Separately Recognized Transactions [Line Items]
Total Recall Costs	7,887	0
Selling, general and administrative expenses
Business Combination, Separately Recognized Transactions [Line Items]
Total Recall Costs	$ 12,684	$ 18,327

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Recall Costs - Recall Costs by Segment (Details) - Recall Holdings Limited [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Business Combination, Separately Recognized Transactions [Line Items]
Total Recall Costs	$ 20,571	$ 18,327
North American Records and Information Management business
Business Combination, Separately Recognized Transactions [Line Items]
Total Recall Costs	7,299	39
North American Data Management Business
Business Combination, Separately Recognized Transactions [Line Items]
Total Recall Costs	873	0
Western European Business
Business Combination, Separately Recognized Transactions [Line Items]
Total Recall Costs	3,216	217
Other International Business
Business Combination, Separately Recognized Transactions [Line Items]
Total Recall Costs	1,651	431
Corporate and Other
Business Combination, Separately Recognized Transactions [Line Items]
Total Recall Costs	$ 7,532	$ 17,640