Iron Mountain (IRM) 10-Q 31 Oct 19 2019 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2019	Oct. 25, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	1-13045
Entity Registrant Name	IRON MOUNTAIN INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	23-2588479
Entity Address, Address Line One	One Federal Street
Entity Address, City or Town	Boston
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02110
City Area Code	617
Local Phone Number	535-4766
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Small Business Entity	false
Emerging Growth Company	false
Entity Shell Company	false
Title of 12(b) Security	Common Stock, $.01 par value
Trading Symbol	IRM
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		287,143,406
Entity Central Index Key	0001020569
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 186,778	$ 165,485
Accounts receivable (less allowances of $44,873 and $43,584 as of September 30, 2019 and December 31, 2018, respectively)	821,926	846,889
Prepaid expenses and other	195,189	195,740
Total Current Assets	1,203,893	1,208,114
Property, Plant and Equipment:
Property, plant and equipment	7,868,457	7,600,949
Less—Accumulated depreciation	(3,311,738)	(3,111,392)
Property, Plant and Equipment, Net	4,556,719	4,489,557
Other Assets, Net:
Goodwill	4,421,995	4,441,030
Customer relationships, customer inducements and data center lease-based intangibles	1,415,287	1,506,522
Operating lease right-of-use assets (see Note 2.d.)	1,765,496	0
Other	213,777	211,995
Total Other Assets, Net	7,816,555	6,159,547
Total Assets	13,577,167	11,857,218
Current Liabilities:
Current portion of long-term debt	394,822	126,406
Accounts payable	289,940	318,765
Accrued expenses and other current liabilities (includes current portion of operating lease liabilities, see Note 2.d.)	888,021	780,781
Deferred revenue	257,328	264,823
Total Current Liabilities	1,830,111	1,490,775
Long-term Debt, net of current portion	8,220,347	8,016,417
Long-term Operating Lease Liabilities, net of current portion (see Note 2.d.)	1,626,907	0
Other Long-term Liabilities	130,290	111,331
Deferred Rent (see Note 2.d.)	0	121,864
Deferred Income Taxes	189,564	183,836
Commitments and Contingencies (see Note 8)
Redeemable Noncontrolling Interests	68,099	70,532
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 287,135,194 and 286,321,009 shares as of September 30, 2019 and December 31, 2018, respectively)	2,871	2,863
Additional paid-in capital	4,287,964	4,263,348
(Distributions in excess of earnings) Earnings in excess of distributions	(2,433,802)	(2,139,493)
Accumulated other comprehensive items, net	(346,203)	(265,664)
Total Iron Mountain Incorporated Stockholders' Equity	1,510,830	1,861,054
Noncontrolling Interests	1,019	1,409
Total Equity	1,511,849	1,862,463
Total Liabilities and Equity	$ 13,577,167	$ 11,857,218

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 44,873	$ 43,584
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	287,135,194	286,321,009
Common stock, outstanding shares	287,135,194	286,321,009

CONDENSED CONSOLIDATED STATEMEN

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

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Interest income	$ 1,558	$ 1,382	$ 4,804	$ 5,048

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 108,284	$ 65,744	$ 231,211	$ 196,574
Other Comprehensive (Loss) Income:
Foreign Currency Translation Adjustment	(83,595)	(24,769)	(71,195)	(132,290)
Change in Fair Value of Derivative Instruments	(1,496)	1,980	(9,101)	4,183
Total Other Comprehensive (Loss) Income	(85,091)	(22,789)	(80,296)	(128,107)
Comprehensive Income (Loss)	23,193	42,955	150,915	68,467
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	(100)	(2,104)	1,777	(3,351)
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	$ 23,293	$ 45,059	$ 149,138	$ 71,818

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	(Distributions in Excess of Earnings) Earnings in Excess of Distributions	Accumulated Other Comprehensive Items, Net	Noncontrolling Interests	Redeemable Noncontrolling Interests	Over-Allotment Option	Over-Allotment OptionCommon Stock	Over-Allotment OptionAdditional Paid-in Capital	At The Market (ATM) Equity Program	At The Market (ATM) Equity ProgramCommon Stock	At The Market (ATM) Equity ProgramAdditional Paid-in Capital
Increase (Decrease) in Stockholders' Equity
Cumulative-effect adjustment for adoption | Accounting Standards Update 2014-09	$ (30,233)			$ (30,233)
Balance (in shares) at Dec. 31, 2017		283,110,183
Balance at Dec. 31, 2017	2,285,134	$ 2,831	$ 4,164,562	(1,779,674)	$ (103,989)	$ 1,404
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		662,389
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	20,547	$ 7	20,540
Issuance of shares								$ 76,192	$ 22	$ 76,170	$ 8,716	$ 2	$ 8,714
Issuance of shares (in shares)									2,175,000			273,486
Change in value of redeemable noncontrolling interests	(8,799)		(8,799)				$ 8,799
Parent cash dividends declared (see Note 9)	(507,437)			(507,437)
Foreign currency translation adjustment	(128,303)				(128,454)	151
Change in fair value of derivative instruments	4,183				4,183
Net income (loss)	196,024
Net income (loss)	196,574			196,089		(65)
Balance at Sep. 30, 2018	1,916,024	$ 2,862	4,261,187	(2,121,255)	(228,260)	1,490
Balance (in shares) at Sep. 30, 2018		286,221,058
Redeemable Noncontrolling Interest at Dec. 31, 2017							91,418
Increase (Decrease) in Temporary Equity [Roll Forward]
Change in equity related to redeemable noncontrolling interests	(8,799)		(8,799)				8,799
Foreign currency translation adjustment							(3,987)
Net income (loss)							550
Noncontrolling interests dividends							(2,035)
Redeemable Noncontrolling Interest at Sep. 30, 2018							94,745
Balance (in shares) at Jun. 30, 2018		286,099,227
Balance at Jun. 30, 2018	2,035,874	$ 2,861	4,256,894	(2,017,938)	(207,450)	1,507
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		121,831
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	6,742	$ 1	6,741
Change in value of redeemable noncontrolling interests	(2,448)		(2,448)				2,448
Parent cash dividends declared (see Note 9)	(169,186)			(169,186)
Foreign currency translation adjustment	(22,791)				(22,790)	(1)
Change in fair value of derivative instruments	1,980				1,980
Net income (loss)	65,853
Net income (loss)	65,744			65,869		(16)
Balance at Sep. 30, 2018	1,916,024	$ 2,862	4,261,187	(2,121,255)	(228,260)	1,490
Balance (in shares) at Sep. 30, 2018		286,221,058
Redeemable Noncontrolling Interest at Jun. 30, 2018							95,340
Increase (Decrease) in Temporary Equity [Roll Forward]
Change in equity related to redeemable noncontrolling interests	(2,448)		(2,448)				2,448
Foreign currency translation adjustment							(1,978)
Net income (loss)							(109)
Noncontrolling interests dividends							(956)
Redeemable Noncontrolling Interest at Sep. 30, 2018							94,745
Increase (Decrease) in Stockholders' Equity
Cumulative-effect adjustment for adoption | Accounting Standards Update 2016-02	$ 5,781			5,781
Balance (in shares) at Dec. 31, 2018	286,321,009	286,321,009
Balance at Dec. 31, 2018	$ 1,862,463	$ 2,863	4,263,348	(2,139,493)	(265,664)	1,409
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		814,185
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	26,078	$ 8	26,070
Change in value of redeemable noncontrolling interests	(1,454)		(1,454)				(3,136)
Parent cash dividends declared (see Note 9)	(529,767)			(529,767)
Foreign currency translation adjustment	(71,438)				(71,438)
Change in fair value of derivative instruments	(9,101)				(9,101)
Net income (loss)	229,287
Net income (loss)	231,211			229,677		(390)
Balance at Sep. 30, 2019	$ 1,511,849	$ 2,871	4,287,964	(2,433,802)	(346,203)	1,019
Balance (in shares) at Sep. 30, 2019	287,135,194	287,135,194
Redeemable Noncontrolling Interest at Dec. 31, 2018	$ 70,532						70,532
Increase (Decrease) in Temporary Equity [Roll Forward]
Change in equity related to redeemable noncontrolling interests	(1,454)		(1,454)				(3,136)
Foreign currency translation adjustment							243
Net income (loss)							1,924
Noncontrolling interests dividends							(1,464)
Redeemable Noncontrolling Interest at Sep. 30, 2019	68,099						68,099
Balance (in shares) at Jun. 30, 2019		287,061,769
Balance at Jun. 30, 2019	1,658,981	$ 2,870	4,281,584	(2,364,812)	(261,821)	1,160
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		73,425
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	6,381	$ 1	6,380
Change in value of redeemable noncontrolling interests	0		0				(4,590)
Parent cash dividends declared (see Note 9)	(176,665)			(176,665)
Foreign currency translation adjustment	(82,886)				(82,886)
Change in fair value of derivative instruments	(1,496)				(1,496)
Net income (loss)	107,534
Net income (loss)	108,284			107,675		(141)
Balance at Sep. 30, 2019	$ 1,511,849	$ 2,871	4,287,964	$ (2,433,802)	$ (346,203)	$ 1,019
Balance (in shares) at Sep. 30, 2019	287,135,194	287,135,194
Redeemable Noncontrolling Interest at Jun. 30, 2019							73,113
Increase (Decrease) in Temporary Equity [Roll Forward]
Change in equity related to redeemable noncontrolling interests	$ 0		$ 0				(4,590)
Foreign currency translation adjustment							(709)
Net income (loss)							750
Noncontrolling interests dividends							(465)
Redeemable Noncontrolling Interest at Sep. 30, 2019	$ 68,099						$ 68,099

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash Flows from Operating Activities:
Net income (loss)	$ 231,211	$ 196,574
Loss (income) from discontinued operations	(104)	12,427
Adjustments to reconcile net income (loss) to cash flows from operating activities:
Depreciation	336,485	337,923
Amortization (includes amortization of deferred financing costs and discounts of $12,286 and $11,537 for the nine months ended September 30, 2019 and 2018, respectively)	160,176	148,209
Revenue reduction associated with amortization of customer inducements and above- and below-market leases	10,417	12,430
Stock-based compensation expense	28,140	23,352
Provision (benefit) for deferred income taxes	2,643	(2,699)
(Gain) loss on disposal/write-down of property, plant and equipment, net (see Note 2.j.)	(17,087)	(2,064)
Foreign currency transactions and other, net	(25,283)	(1,271)
(Increase) decrease in assets	(24,121)	(24,247)
(Decrease) increase in liabilities	(54,332)	(75,096)
Cash Flows from Operating Activities - Continuing Operations	648,145	625,538
Cash Flows from Operating Activities - Discontinued Operations	0	(995)
Cash Flows from Operating Activities	648,145	624,543
Cash Flows from Investing Activities:
Capital expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	(533,614)	(329,953)
Cash paid for acquisitions, net of cash acquired	(56,499)	(1,711,011)
Acquisition of customer relationships	(42,990)	(38,829)
Customer inducements	(7,429)	(6,212)
Contract fulfillment costs and third-party commissions	(63,090)	(18,520)
Net proceeds from divestments	0	1,019
Investments in joint ventures (see Note 10)	(19,222)	0
Proceeds from sales of property and equipment and other, net	82,148	713
Cash Flows from Investing Activities - Continuing Operations	(640,696)	(2,102,793)
Cash Flows from Investing Activities - Discontinued Operations	5,061	0
Cash Flows from Investing Activities	(635,635)	(2,102,793)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt	(12,690,691)	(11,226,171)
Proceeds from revolving credit facility, term loan facilities and other debt	12,256,276	12,437,017
Net proceeds from sales of senior notes	987,500	0
Debt repayment and equity distribution to noncontrolling interests	(1,464)	(2,035)
Parent cash dividends	(528,908)	(505,403)
Net proceeds associated with the Over-Allotment Option	0	76,192
Net proceeds associated with the At the Market (ATM) Program	0	8,716
Net (payments) proceeds associated with employee stock-based awards	(2,059)	(2,800)
Payment of debt financing and stock issuance costs	(769)	(15,957)
Cash Flows from Financing Activities - Continuing Operations	19,885	769,559
Cash Flows from Financing Activities - Discontinued Operations	0	0
Cash Flows from Financing Activities	19,885	769,559
Effect of Exchange Rates on Cash and Cash Equivalents	(11,102)	(19,332)
Increase (decrease) in Cash and Cash Equivalents	21,293	(728,023)
Cash and Cash Equivalents, including Restricted Cash, Beginning of Period	165,485	925,699
Cash and Cash Equivalents, including Restricted Cash, End of Period	186,778	197,676
Supplemental Information:
Cash Paid for Interest	342,139	322,986
Cash Paid for Income Taxes, Net	54,446	49,061
Non-Cash Investing and Financing Activities:
Financing Leases (see Note 2.d.)	20,699	56,493
Accrued Capital Expenditures	78,329	60,062
Accrued Purchase Price and Other Holdbacks	4,135	27,919
Dividends Payable	$ 182,859	$ 174,136

CONDENSED CONSOLIDATED STATEM_6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Statement of Cash Flows [Abstract]
Deferred financing costs and discount included in Amortization	$ 12,286	$ 11,537

General

General	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	General The interim condensed 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") provide storage of physical records and data backup media, information management solutions and enterprise-class colocation and wholesale data center space that help organizations in various locations throughout North America, Europe, Latin America, Asia and Africa. We offer comprehensive records and information management services and data management services, along with the expertise and experience to address complex storage and information management challenges such as rising storage rental costs, legal and regulatory compliance and disaster recovery requirements. We provide secure and reliable data center facilities to protect digital information and ensure the continued operation of our customers’ information technology ("IT") infrastructure, with flexible deployment options, including both colocation and wholesale space. The unaudited condensed 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 Condensed 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, 2018 included in our Annual Report on Form 10-K filed with the SEC on February 14, 2019 (our "Annual Report"). We have been organized and have operated as a real estate investment trust for United States federal income tax purposes ("REIT") beginning with our taxable year ended December 31, 2014. On January 10, 2018, we completed the acquisition of IO Data Centers, LLC ("IODC") (the "IODC Transaction"). See Note 4. On January 1, 2019, we adopted Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842), as amended ("ASU 2016-02"). See Note 2.d.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting PoliciesThis Note 2 to Notes to Condensed 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. Cash, Cash Equivalents and Restricted Cash Cash and cash equivalents include cash on hand and cash invested in highly liquid short-term securities, which have remaining maturities at the date of purchase of less than 90 days. Cash and cash equivalents are carried at cost, which approximates fair value. At September 30, 2019 and December 31, 2018, we had $8,057 and $15,141 , respectively, of restricted cash held by certain financial institutions related to bank guarantees. b. Goodwill and Other Intangible Assets and Liabilities Goodwill Since December 31, 2018, there have been no changes to our accounting polices related to the accounting for goodwill. As of September 30, 2019 and December 31, 2018 , no factors were identified that would alter our October 1, 2018 goodwill impairment analysis. Our reporting units as of December 31, 2018 are described in detail in Note 2.h. to Notes to Consolidated Financial Statements included in our Annual Report. On March 19, 2019, we divested the business included in our former Consumer Storage reporting unit, which had no goodwill associated with it at December 31, 2018 or at the date of the divestment. See Note 10 for additional information. The goodwill associated with acquisitions completed during the first nine months of 2019 (which are described in Note 4) has been incorporated into our reporting units as they existed as of December 31, 2018. The changes in the carrying value of goodwill attributable to each reportable operating segment for the nine months ended September 30, 2019 are as follows: North American North American Western European Business Other International Business Global Data Center Business Corporate and Other Business Total Goodwill balance, net of accumulated amortization as of December 31, 2018 $ 2,251,795 $ 493,491 $ 381,806 $ 818,223 $ 425,956 $ 69,759 $ 4,441,030 Deductible goodwill acquired during the year 5,109 — 675 10,333 — — 16,117 Non-deductible goodwill acquired during the year — — 5,011 4,638 — 1,904 11,553 Fair value and other adjustments(1) 55 — (1,012 ) 1,321 258 (417 ) 205 Currency effects 5,501 1,495 (15,717 ) (32,461 ) (5,182 ) (546 ) (46,910 ) Goodwill balance, net accumulated amortization as of September 30, 2019 $ 2,262,460 $ 494,986 $ 370,763 $ 802,054 $ 421,032 $ 70,700 $ 4,421,995 Accumulated Goodwill Impairment Balance as of December 31, 2018 $ 85,909 $ — $ 46,500 $ — $ — $ 3,011 $ 135,420 Accumulated Goodwill Impairment Balance as of September 30, 2019 $ 85,909 $ — $ 46,500 $ — $ — $ 3,011 $ 135,420 _______________________________________________________________________________ (1) Total fair value and other adjustments primarily include $867 in net adjustments related to property, plant and equipment, customer relationships and data center lease-based intangible assets and deferred income taxes and other liabilities offset by $662 of net cash received related to certain acquisitions completed in 2018. Finite-lived Intangible Assets and Liabilities Finite-lived intangible assets and liabilities are primarily comprised of customer relationship intangible assets, customer inducements and data center intangible assets and liabilities (which include data center in-place lease intangible assets, data center tenant relationship intangible assets, data center above-market in-place lease intangible assets and data center below-market in-place lease intangible assets). Since December 31, 2018, there have been no changes to our accounting policies related to the accounting for any of our finite-lived intangible assets and liabilities as disclosed in Note 2.i. to Notes to Consolidated Financial Statements included in our Annual Report. The gross carrying amount and accumulated amortization of our finite-lived intangible assets as of September 30, 2019 and December 31, 2018 are as follows: September 30, 2019 December 31, 2018 Gross Carrying Accumulated Net Carrying Gross Carrying Accumulated Net Carrying Assets: Customer relationship intangible assets $ 1,747,535 $ (529,164 ) $ 1,218,371 $ 1,718,919 $ (455,705 ) $ 1,263,214 Customer inducements 53,097 (30,298 ) 22,799 56,478 (34,181 ) 22,297 Data center lease-based intangible assets(1) 264,382 (90,265 ) 174,117 271,818 (50,807 ) 221,011 Third-party commissions asset(2) 31,708 (3,001 ) 28,707 30,071 (1,089 ) 28,982 $ 2,096,722 $ (652,728 ) $ 1,443,994 $ 2,077,286 $ (541,782 ) $ 1,535,504 Liabilities: Data center below-market leases $ 12,720 $ (3,424 ) $ 9,296 $ 12,318 $ (1,642 ) $ 10,676 _______________________________________________________________________________ (1) Includes data center in-place lease intangible assets, data center tenant relationship intangible assets and data center above-market in-place lease intangible assets. (2) Third-party commissions asset is included in Other, a component of Other assets, net in the accompanying Condensed Consolidated Balance Sheets as of September 30, 2019 and December 31, 2018. The third-party commissions asset is primarily comprised of additional payments associated with the execution of future customer contracts through the one-year anniversary of the acquisition of IODC, as described in Note 4. Other finite-lived intangible assets, including trade names, noncompetition agreements and trademarks, are capitalized and amortized and are included in depreciation and amortization in the accompanying Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2019 and 2018. The other finite-lived intangible assets as of September 30, 2019 and December 31, 2018 are as follows: September 30, 2019 December 31, 2018 Gross Carrying Accumulated Net Carrying Gross Carrying Accumulated Net Carrying Other finite-lived intangible assets (included in Other, a component of Other assets, net) $ 19,842 $ (17,385 ) $ 2,457 $ 20,310 $ (14,798 ) $ 5,512 Amortization expense associated with finite-lived intangible assets, revenue reduction associated with the amortization of customer inducements and net revenue reduction associated with the amortization of data center above-market leases and data center below-market leases for the three and nine months ended September 30, 2019 and 2018 are as follows: Three Months Ended September 30, Nine Months Ended 2019 2018 2019 2018 Amortization expense included in depreciation and amortization associated with: Customer relationship and customer inducement intangible assets $ 29,064 $ 26,782 $ 85,228 $ 84,401 Data center in-place leases and tenant relationships 11,356 12,036 35,337 30,437 Third-party commissions asset and other finite-lived intangible assets 2,515 642 5,456 3,486 Revenue reduction associated with amortization of: Customer inducements $ 2,303 $ 3,229 $ 7,641 $ 8,782 Data center above-market leases and data center below-market leases 936 1,276 2,776 3,648 c. Revenues Since December 31, 2018, there have been no changes to our accounting policies related to the accounting for revenues as disclosed in Note 2.l. to Notes to Consolidated Financial Statements included in our Annual Report. The costs of the initial intake of customer records into physical storage ("Intake Costs") and capitalized commissions asset (collectively, "Contract Fulfillment Costs") as of September 30, 2019 and December 31, 2018 are as follows: September 30, 2019 December 31, 2018 Description Location in Balance Sheet Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Intake Costs asset Other (within Other Assets, Net) $ 37,938 $ (20,974 ) $ 16,964 $ 39,748 $ (24,504 ) $ 15,244 Capitalized commissions asset Other (within Other Assets, Net) 56,585 (21,933 ) 34,652 58,424 (34,637 ) 23,787 Amortization expense associated with the Intake Costs asset and capitalized commissions asset for the three and nine months ended September 30, 2019 and 2018 are as follows: Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Intake Costs asset $ 2,250 $ 2,294 $ 7,764 $ 7,915 Capitalized commissions asset 4,224 3,053 14,105 10,433 Deferred revenue liabilities are reflected as follows in our Condensed Consolidated Balance Sheets: Description Location in Balance Sheet September 30, 2019 December 31, 2018 Deferred revenue - Current Deferred revenue $ 257,328 $ 264,823 Deferred revenue - Long-term Other Long-term Liabilities 26,572 26,401 Data Center Lessor Considerations Our data center business features storage rental provided to customers at contractually specified rates over a fixed contractual period. Prior to January 1, 2019, our data center revenue contracts were accounted for in accordance with Accounting Standards Codification (“ASC”) No. 840, Leases ("ASC 840"). On January 1, 2019, we adopted ASU 2016-02, as described in more detail in Note 2.d. Beginning on January 1, 2019, our data center revenue contracts are accounted for in accordance with ASU 2016-02. ASU 2016-02 provides a practical expedient which allows lessors to account for nonlease components (such as power and connectivity, in the case of our data center business) with the related lease component if both the timing and pattern of transfer are the same for nonlease components and the lease component, and the lease component would be classified as an operating lease. The single combined component is accounted for under ASU 2016-02 if the lease component is the predominant component and is accounted for under ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"), if the nonlease components are the predominant components. We have elected to take this practical expedient. Storage rental revenue associated with our data center business was approximately $62,000 and $182,300 for the three and nine months ended September 30, 2019, respectively, which includes approximately $12,000 and $31,000 of revenue associated with power and connectivity for the three and nine months ended September 30, 2019, respectively. The revenue related to the service component of our data center business remains unchanged from the adoption of ASU 2016-02 and is recognized in the period the related services are provided. Our accounting treatment for data center revenue was not significantly impacted by the adoption of ASU 2016-02. The future minimum lease payments we expect to receive under non-cancellable data center operating leases, for which we are the lessor, excluding month to month leases, for the next five years are as follows: Year Future minimum lease payments 2019 (excluding the nine months ended September 30, 2019) $ 58,381 2020 177,528 2021 118,980 2022 83,677 2023 67,569 d. Leases We lease facilities for certain warehouses, data centers and office space. We also have land leases, including those on which certain facilities are located. The majority of our leased facilities are classified as operating leases that, on average, have initial lease terms of five to 10 years , with one or more lease renewal options to extend the lease term. Our lease renewal option terms generally range from one to five years . The exercise of the lease renewal option is at our sole discretion and may contain fixed rent, fair market value based rent or Consumer Price Index rent escalation clauses. We include option periods in the lease term when our failure to renew the lease would result in an economic disincentive, thereby making it reasonably certain that we will renew the lease. We recognize straight line rental expense over the life of the lease and any fair market value or Consumer Price Index rent escalations are recognized as variable lease expense in the period in which the obligation is incurred. In addition, we lease certain vehicles and equipment. Vehicle and equipment leases have lease terms ranging from one to seven years . In February 2016, the Financial Accounting Standards Board ("FASB") issued ASU 2016-02, Leases (Topic 842), which requires lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by all leases, both operating and financing (formerly referred to as capital leases under ASC 840). ASU 2016-02 requires certain qualitative and quantitative disclosures designed to give financial statement users information on the amount, timing, and uncertainty of cash flows arising from leases. We adopted ASU 2016-02 on January 1, 2019 on a modified retrospective basis under which we recognized and measured leases existing at, or entered into after, the beginning of the period of adoption. Therefore, we applied ASC 840 to all earlier comparative periods (prior to the adoption of ASU 2016-02), including disclosures, and recognized the effects of applying ASU 2016-02 as a cumulative-effect adjustment to (Distributions in excess of earnings) Earnings in excess of distributions as of January 1, 2019, the effective date of the standard. As such, the comparative Condensed Consolidated Balance Sheet as of December 31, 2018 has not been restated to reflect the adoption of ASU 2016-02. Accordingly, the majority of the amount presented as deferred rent liabilities on our Consolidated Balance Sheet as of December 31, 2018 is now included in the calculation of operating lease right-of-use assets and any remaining amounts are now classified within other liability line items on our Condensed Consolidated Balance Sheet as of September 30, 2019. The transition guidance associated with ASU 2016-02 also permitted certain practical expedients. We elected the "package of 3" practical expedients permitted under the transition guidance which, among other things, allowed us to carryforward our historical lease classifications. We also adopted an accounting policy which provides that leases with an initial term of 12 months or less will not be included within the lease right-of-use assets and lease liabilities recognized on our Condensed Consolidated Balance Sheets after the adoption of ASU 2016-02. We will continue to recognize the lease payments for those leases with an initial term of 12 months or less in the Condensed Consolidated Statements of Operations on a straight-line basis over the lease term. The lease right-of-use assets and related lease liabilities are classified as either operating or financing. Lease right-of-use assets are calculated as the net present value of future payments plus any capitalized initial direct costs less any tenant improvements or lease incentives. Lease liabilities are calculated as the net present value of future payments. In calculating the present value of the lease payments, we will utilize the rate stated within the lease (in the limited circumstances when such rate is available) or, if no rate is explicitly stated, we have elected to utilize a rate that reflects our securitized incremental borrowing rate by geography for the lease term. In July 2018, the FASB issued ASU No. 2018-11, Leases - Targeted Improvements ("ASU 2018-11"). ASU 2018-11 provides a practical expedient which allows lessees to account for nonlease components (which include common area maintenance, taxes, and insurance) with the related lease component. Any variable nonlease components are not included within the lease right-of-use asset and lease liability on the Condensed Consolidated Balance Sheets, and instead, are reflected as an expense in the period incurred. We have elected to take this practical expedient upon adoption of ASU 2016-02. At January 1, 2019, we recognized the cumulative effect of initially applying ASU 2016-02 as an adjustment to the opening balance of (Distributions in excess of earnings) Earnings in excess of distributions, resulting in an increase of approximately $5,800 to stockholders' equity due to certain build to suit leases that were accounted for as financing leases under ASC 840, Leases , but are accounted for as operating leases under ASU 2016-02 at January 1, 2019. Operating and financing lease right-of-use assets and lease liabilities as of September 30, 2019 and January 1, 2019 (date of adoption of ASU 2016-02) are as follows: Description Location in Balance Sheet September 30, 2019 January 1, 2019 Assets: Operating lease right-of-use assets(1) Operating lease right-of-use assets $ 1,765,496 $ 1,825,721 Financing lease right-of-use assets, net of accumulated depreciation(2) Property, Plant and Equipment, Net 327,264 361,078 Total $ 2,092,760 $ 2,186,799 Liabilities: Current Operating lease liabilities Accrued expenses and other current liabilities $ 216,176 $ 209,911 Financing lease liabilities Current portion of long-term debt 47,112 50,437 Total current lease liabilities 263,288 260,348 Long-term Operating lease liabilities Long-term Operating Lease Liabilities, net of current portion 1,626,907 1,685,771 Financing lease liabilities Long-term Debt, net of current portion 318,986 350,263 Total long-term lease liabilities 1,945,893 2,036,034 Total $ 2,209,181 $ 2,296,382 ______________________________________________________________ (1) At September 30, 2019, these assets are comprised of approximately 98% real estate related assets (which include land, buildings and racking) and 2% non-real estate related assets (which include warehouse equipment, vehicles, furniture and fixtures and computer hardware and software). (2) At September 30, 2019, these assets are comprised of approximately 64% real estate related assets and 36% non-real estate related assets. The components of the lease expense for the three and nine months ended September 30, 2019 are as follows: Description Location in Statement of Operations Three Months Ended Nine Months Ended September 30, 2019 Operating lease cost(1) Cost of sales and Selling, general and administrative $ 114,727 $ 343,282 Financing lease cost: Depreciation of financing lease right-of-use assets Depreciation and amortization $ 14,679 $ 45,950 Interest expense for financing lease liabilities Interest Expense, Net 4,905 15,972 Total financing lease cost $ 19,584 $ 61,922 ______________________________________________________________ (1) Of the $114,727 incurred for the three months ended September 30, 2019, $111,423 is included within Cost of sales and $3,304 is included within Selling, general and administrative expenses. Of the $343,282 incurred for the nine months ended September 30, 2019, $333,742 is included within Cost of sales and $9,540 is included within Selling, general and administrative expenses. Operating lease cost includes variable lease costs of $26,121 and $78,712 for the three and nine months ended September 30, 2019, respectively. We sublease certain real estate to third parties. We recognized sublease income of $1,667 and $5,221 for the three and nine months ended September 30, 2019, respectively. Weighted average remaining lease terms and discount rates as of September 30, 2019 are as follows: Remaining Lease Term Operating leases 11.0 Years Financing leases 11.0 Years Discount Rate Operating leases 7.1 % Financing leases 5.6 % The estimated minimum future lease payments as of September 30, 2019, are as follows: Year Operating Leases(1) Sublease Income Financing Leases(1) 2019 (excluding the nine months ended September 30, 2019) $ 87,009 $ (1,646 ) $ 32,386 2020 323,448 (7,520 ) 57,887 2021 298,656 (5,185 ) 52,685 2022 274,021 (4,905 ) 46,358 2023 248,066 (4,795 ) 38,695 Thereafter 1,505,195 (10,673 ) 292,903 Total minimum lease payments 2,736,395 $ (34,724 ) 520,914 Less amounts representing interest or imputed interest (893,312 ) (154,816 ) Present value of lease obligations $ 1,843,083 $ 366,098 The estimated minimum future lease payments as of December 31, 2018 are as follows: Year Operating Leases(1) Sublease Income Financing Leases(1)(2) 2019 $ 323,454 $ (7,525 ) $ 80,513 2020 293,276 (7,200 ) 71,335 2021 267,379 (7,063 ) 61,269 2022 246,128 (6,694 ) 52,832 2023 221,808 (6,409 ) 44,722 Thereafter 1,287,807 (6,279 ) 377,750 Total minimum lease payments $ 2,639,852 $ (41,170 ) 688,421 Less amounts representing interest (241,248 ) Present value of lease obligations $ 447,173 _______________________________________________________________________________ (1) Estimated minimum future lease payments exclude variable common area maintenance charges, insurance and taxes. Differences in estimated lease payments between September 30, 2019 and December 31, 2018 are primarily related to adjustments to account for certain build to suit leases that were accounted for as financing obligations under ASC 840 but are accounted for as operating leases under ASU 2016-02 and foreign currency exchange rate impacts. (2) Includes capital lease and financing obligations associated with build to suit lease transactions at December 31, 2018. As of September 30, 2019, we do not have any material operating or financing leases that are signed but have not yet commenced and we have certain leases with related parties which are not material to our consolidated financial statements. Other information: Supplemental cash flow information relating to our leases for the nine months ended September 30, 2019 is as follows: Cash paid for amounts included in measurement of lease liabilities: Nine Months Ended Operating cash flows used in operating leases $ 252,277 Operating cash flows used in financing leases (interest) 15,972 Financing cash flows used in financing leases 44,808 Non-cash items: Operating lease modifications and reassessments $ 42,418 New operating leases (including acquisitions) 117,193 New financing leases, modifications and reassessments 20,699 e. 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 (together, "Employee Stock-Based Awards"). There have been no significant changes to our accounting policies, assumptions and valuation methodologies related to the accounting for our Employee Stock-Based Awards as disclosed in Note 2.n. to Notes to Consolidated Financial Statements included in our Annual Report. For our Employee Stock-Based Awards made on or after February 20, 2019, we have included the following retirement provision: Upon an employee’s retirement on or after attaining age 58, if the sum of (i) the award recipient’s age at retirement and (ii) the award recipient’s years of service with the company totals at least 70, the award recipient is entitled to continued vesting of any outstanding Employee Stock-Based Awards which include the 2019 Retirement Criteria subsequent to their retirement, provided that, for awards granted in the year of retirement, their retirement occurs on or after July 1 st (the “2019 Retirement Criteria”). Accordingly, (i) grants of Employee Stock-Based Awards to an employee who has met the 2019 Retirement Criteria on or before the date of grant, or will meet the Retirement Criteria before July 1 st of the year of the grant, will be expensed between the date of grant and July 1 st of the grant year and (ii) grants of Employee Stock-Based Awards to employees who will meet the 2019 Retirement Criteria during the award’s normal vesting period will be expensed between the date of grant and the date upon which the award recipient meets the 2019 Retirement Criteria. Stock options and RSUs granted to recipients who meet the 2019 Retirement Criteria will continue vesting on the original vesting schedule, and the stock options will remain exercisable up to three years after retirement, or the original expiration date of the stock options, if earlier. PUs granted to recipients who meet the 2019 Retirement Criteria will continue to vest and be delivered in accordance with the original vesting schedule of the applicable PU award and remain subject to the same performance conditions. Stock-based compensation expense for Employee Stock-Based Awards for the three and nine months ended September 30, 2019 was $7,120 ( $6,632 after tax or $0.02 per basic and diluted share) and $28,140 ( $26,216 after tax or $0.09 per basic and diluted share), respectively, and for the three and nine months ended September 30, 2018 was $7,279 ( $6,734 after tax or $0.02 per basic and diluted share) and $23,352 ( $21,599 after tax or $0.08 per basic and diluted share), respectively. The substantial majority of the stock-based compensation expense for Employee Stock-Based Awards is included in Selling, general and administrative expenses in the accompanying Condensed Consolidated Statements of Operations. As of September 30, 2019 , unrecognized compensation cost related to the unvested portion of our Employee Stock-Based Awards was $50,152 and is expected to be recognized over a weighted-average period of 1.9 years. Stock Options A summary of stock option activity for the nine months ended September 30, 2019 is as follows: Stock Options Outstanding at December 31, 2018 4,271,834 Granted 920,706 Exercised (236,704 ) Forfeited (13,542 ) Expired (16,715 ) Outstanding at September 30, 2019 4,925,579 Options exercisable at September 30, 2019 3,128,621 Options expected to vest 1,716,446 Restricted Stock Units The fair value of RSUs vested during the three and nine months ended September 30, 2019 and 2018 is as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Fair value of RSUs vested $ 3,092 $ 3,189 $ 20,802 $ 19,195 A summary of RSU activity for the nine months ended September 30, 2019 is as follows: RSUs Non-vested at December 31, 2018 1,196,566 Granted 752,555 Vested (611,828 ) Forfeited (81,437 ) Non-vested at September 30, 2019 1,255,856 Performance Units The fair value of earned PUs that vested during the three and nine months ended September 30, 2019 and 2018 is as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Fair value of earned PUs that vested $ 1,176 $ 84 $ 7,679 $ 3,117 A summary of PU activity for the nine months ended September 30, 2019 is as follows: Original PU Adjustment(1) Total Non-vested at December 31, 2018 967,049 (299,948 ) 667,101 Granted 380,856 — 380,856 Vested (202,141 ) — (202,141 ) Forfeited/Performance or Market Conditions Not Achieved (13,898 ) (14,850 ) (28,748 ) Non-vested at September 30, 2019 1,131,866 (314,798 ) 817,068 _______________________________________________________________________________ (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. As of September 30, 2019 , we expected 100% , 50% and 100% achievement of each of the predefined revenue, return on invested capital and Adjusted EBITDA (as defined in Note 7) targets associated with the awards of PUs made in 2019 , 2018 and 2017 , respectively. f. 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 and nine months ended September 30, 2019 and 2018 are as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Income (loss) from continuing operations $ 108,284 $ 77,349 $ 231,107 $ 209,001 Less: Net income (loss) attributable to noncontrolling interests 609 (125 ) 1,534 485 Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation) $ 107,675 $ 77,474 $ 229,573 $ 208,516 (Loss) income from discontinued operations, net of tax $ — $ (11,605 ) $ 104 $ (12,427 ) Net income (loss) attributable to Iron Mountain Incorporated $ 107,675 $ 65,869 $ 229,677 $ 196,089 Weighted-average shares—basic 287,152,000 286,159,000 286,869,000 285,801,000 Effect of dilutive potential stock options 93,752 264,451 157,928 250,574 Effect of dilutive potential RSUs and PUs 445,081 558,891 528,387 463,583 Weighted-average shares—diluted 287,690,833 286,982,342 287,555,315 286,515,157 Earnings (losses) per share—basic: Income (loss) from continuing operations $ 0.37 $ 0.27 $ 0.80 $ 0.73 (Loss) income from discontinued operations, net of tax — (0.04 ) — (0.04 ) Net income (loss) attributable to Iron Mountain Incorporated(1) $ 0.37 $ 0.23 $ 0.80 $ 0.69 Earnings (losses) per share—diluted: Income (loss) from continuing operations $ 0.37 $ 0.27 $ 0.80 $ 0.73 (Loss) income from discontinued operations, net of tax — (0.04 ) — (0.04 ) Net income (loss) attributable to Iron Mountain Incorporated(1) $ 0.37 $ 0.23 $ 0.80 $ 0.68 Antidilutive stock options, RSUs and PUs, excluded from the calculation 4,782,661 3,253,975 4,590,645 3,256,206 _______________________________________________________________________________ (1) Columns may not foot due to rounding. g. Income Taxes We provide for income taxes during interim periods based on our estimate of the effective tax rate for the year. Our estimate of the effective tax rates for the years ending December 31, 2019 and 2018 reflect the impact of the U.S. tax reform legislation, commonly referred to as the Tax Cuts and Jobs Act (the “Tax Reform Legislation”). See Note 7 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding the impact the Tax Reform Legislation had on us. 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 rates for the three and nine months ended September 30, 2019 and 2018 are as follows: Three Months Ended September 30, Nine Months Ended 2019(1) 2018(1) 2019(1) 2018(2) Effective Tax Rate 16.8 % 15.3 % 15.7 % 16.0 % _______________________________________________________________________________ (1) The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three and nine months ended September 30, 2019 and for the three months ended September 30, 2018 were the benefit derived from the dividends paid deduction and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates. (2) The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the nine months ended September 30, 2018 were the benefit derived from the dividends paid deduction, a discrete tax benefit of approximately $14,000 associated with the resolution of a tax matter and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates. h. 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 obs

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	(i) interest rate swap agreements (which are designated as cash flow hedges), (ii) cross-currency swap agreements (which are designated as net investment hedges) and (iii) foreign exchange currency forward contracts (which are not designated as hedges). Interest Rate Swap Agreements Designated as Cash Flow Hedges In March 2018, we entered into interest rate swap agreements to limit our exposure to changes in interest rates on a portion of our floating rate indebtedness. As of September 30, 2019 and December 31, 2018, we had $350,000 in notional value of interest rate swap agreements outstanding, which expire in March 2022. Under the interest rate swap agreements, we receive variable rate interest payments associated with the notional amount of each interest rate swap, based upon one-month LIBOR, in exchange for the payment of fixed interest rate payments (at the fixed interest rate specified in the interest rate swap agreements). In July 2019, we entered into forward-starting interest rate swap agreements to limit our exposure to changes in interest rates on a portion of our floating rate indebtedness once our current interest rate swap agreements expire in March 2022. The forward-starting interest rate swap agreements have $350,000 in notional value, commence in March 2022 and expire in March 2024. Under the swap agreements we will receive variable rate interest payments based upon one-month LIBOR, in exchange for the payment of fixed interest rate payments at the rates specified in the interest rate swap agreements. We have designated these interest rate swap agreements, including the forward-starting interest rate swap agreements, as cash flow hedges. Unrealized gains are recognized as assets while unrealized losses are recognized as liabilities. At September 30, 2019 and December 31, 2018, we had a derivative liability of $12,046 and $973 , respectively, which was recorded as a component of Other long-term liabilities in our Condensed Consolidated Balance Sheets. We have recorded the change in fair value of the interest rate swap agreements as a component of accumulated other comprehensive income. We have recorded unrealized losses of $3,468 and $11,073 for the three and nine months ended September 30, 2019, respectively. We have recorded unrealized gains of $1,980 and $4,183 for the three and nine months ended September 30, 2018, respectively. As of September 30, 2019, cumulative net losses of $12,046 are recorded within accumulated other comprehensive items, net associated with these cash flow hedges. Net Investment Hedges a. Cross-Currency Swap Agreements Designated as a Hedge of Net Investment In August 2019, we entered into cross-currency swap agreements to hedge the variability of exchange rate impacts between the United States dollar and the Euro. Under the terms of the cross-currency swap agreements we notionally exchanged approximately $110,000 at an interest rate of 6.0% for approximately 99,055 Euros at a weighted average interest rate of approximately 3.65% . The cross-currency swap agreements, which expire in August 2023, are designated as a hedge of net investment against certain of our Euro denominated subsidiaries and require an exchange of the notional amounts at maturity. The cross-currency swaps are marked to market at each reporting period and any changes in fair value are recognized as a component of accumulated other comprehensive income. Unrealized gains are recognized as assets while unrecognized losses are recognized as liabilities. At September 30, 2019, we had a derivative asset of $1,972 , which was recorded as a component of Other within Other assets, net in our Condensed Consolidated Balance Sheet, which represents the fair value of the cross-currency swap agreements. We have recorded unrealized gains of $1,972 for the three and nine months ended September 30, 2019. b. Euro Notes Designated as a Hedge of Net Investment In addition, we have designated a portion of our Euro Notes as a hedge of net investment of certain of our Euro denominated subsidiaries. For the nine months ended September 30, 2019, we designated, on average, 279,821 Euros of our Euro Notes as a hedge of net investment of certain of our Euro denominated subsidiaries. For the nine months ended September 30, 2018, we designated, on average, 209,276 Euros of our Euro Notes as a hedge of net investment of certain of our Euro denominated subsidiaries. As a result, we recorded foreign exchange gains (losses) of $13,101 and $14,962 for the three and nine months ended September 30, 2019, respectively, and $2,139 and $6,761 for the three and nine months ended September 30, 2018, respectively, 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. As of September 30, 2019, cumulative net gains of $29,220 , net of tax, are recorded in accumulated other comprehensive items, net associated with this net investment hedge. Foreign Exchange Currency Forward Contracts Not Designated as Hedges We have entered into forward contracts to hedge our exposures associated with certain foreign currencies. We have not designated any of these forward contracts as hedges. Our policy is to record the fair value of each derivative instrument on a gross basis. As of September 30, 2019, we had no outstanding forward contracts. As of December 31, 2018, we had outstanding forward contracts to purchase 29,000 Euros and sell $33,374 United States dollars. At December 31, 2018, we had a derivative asset of $93 which was recorded as a component of Prepaid expenses and other in our Condensed Consolidated Balance Sheet. We recorded losses for our derivative instruments not recognized as hedging instruments for the three and nine months ended September 30, 2019 of $0 and $737 , respectively. We recorded losses for our derivative instruments not recognized as hedging instruments for the three and nine months ended September 30, 2018 of $616 and $4,172

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2019
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. Acquisitions Completed During the Nine Months Ended September 30, 201 9 During the nine months ended September 30, 2019, in order to enhance our existing operations in the United States, the United Kingdom, Switzerland, Thailand, Colombia, Germany, Hong Kong and Latvia and to expand our operations into Bulgaria, we completed the acquisition of nine storage and records management companies and one art storage company for total cash consideration of approximately $49,200 . Purchase Price Allocation A summary of the cumulative consideration paid and the preliminary allocation of the purchase price paid for all of our 2019 acquisitions through September 30, 2019 is as follows: Nine Months Ended Cash Paid (gross of cash acquired)(1) $ 51,456 Purchase Price Holdbacks and Other 4,135 Total Consideration 55,591 Fair Value of Identifiable Assets Acquired: Cash 2,224 Accounts Receivable, Prepaid Expenses and Other Assets 3,228 Property, Plant and Equipment(2) 5,320 Customer Relationship Intangible Assets 21,584 Operating Lease Right-of-Use Assets 16,956 Accounts Payable, Accrued Expenses and Other Liabilities (2,716 ) Operating Lease Liabilities (16,956 ) Deferred Income Taxes (1,719 ) Total Fair Value of Identifiable Net Assets Acquired 27,921 Goodwill Initially Recorded(3) $ 27,670 _______________________________________________________________________________ (1) Included in cash paid for acquisitions in the Condensed Consolidated Statement of Cash Flows for the nine months ended September 30, 2019 is net cash acquired of $2,224 and contingent and other payments, net of $7,267 related to acquisitions made in previous years. (2) Consists primarily of leasehold improvements, 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 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. See Note 6 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding our allocations of the purchase price for acquisitions. The preliminary purchase price allocations that are not finalized as of September 30, 2019 primarily relate to the final assessment of the fair values of intangible assets and liabilities (primarily customer relationship intangible assets), property, plant and equipment (primarily building, building improvements and racking structures), right-of-use assets and liabilities associated with acquired operating leases, contingencies and income taxes (primarily deferred income taxes), primarily associated with the acquisitions we closed in 2019. 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 nine months ended September 30, 2019 were not material to our results from operations. Acquisition of IO Data Centers in 2018 On January 10, 2018, we completed the IODC Transaction. At the closing of the IODC Transaction, we paid approximately $1,347,000 . In February 2019, we paid approximately $31,000 in additional purchase price associated with the execution of customer contracts from the closing through the one-year anniversary of the IODC Transaction, which was accrued at December 31, 2018. This amount, net of amortization, is reported as a third-party commissions asset as a component of Other within Other assets, net, in our Condensed Consolidated Balance Sheets at September 30, 2019 and December 31, 2018. The unaudited consolidated pro forma financial information (the "Pro Forma Financial Information") below summarizes the combined results of us and IODC on a pro forma basis as if the IODC Transaction had occurred on January 1, 2017. 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, 2017. The Pro Forma Financial Information, for the period presented, includes purchase accounting adjustments (including amortization expenses from acquired intangible assets and depreciation of acquired property, plant and equipment). We and IODC collectively incurred $28,064 of operating expenditures to complete the IODC Transaction (including advisory and professional fees). 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, 2017. Three Months Ended September 30, 2018 Nine Months Ended Total Revenues $ 1,060,991 $ 3,167,762 Income from Continuing Operations $ 77,349 $ 218,953 Per Share Income from Continuing Operations - Basic $ 0.27 $ 0.76 Per Share Income from Continuing Operations - Diluted $ 0.27 $ 0.76 In addition to our acquisition of IODC, we completed certain other acquisitions during the first nine months of 2019 and in fiscal year 2018. The Pro Forma Financial Information does not reflect these acquisitions due to the insignificant impact of these acquisitions on our consolidated results of operations.

Debt

Debt	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Debt	Long-term debt is as follows: September 30, 2019 December 31, 2018 Debt (inclusive of discount) Unamortized Deferred Financing Costs Carrying Amount Fair Debt (inclusive of discount) Unamortized Deferred Financing Costs Carrying Amount Fair Revolving Credit Facility(1) $ 354,879 $ (11,763 ) $ 343,116 $ 354,879 $ 793,832 $ (14,117 ) $ 779,715 $ 793,832 Term Loan A(1) 231,250 — 231,250 231,250 240,625 — 240,625 240,625 Term Loan B(2) 688,089 (7,806 ) 680,283 688,638 693,169 (8,742 ) 684,427 660,013 Australian Dollar Term Loan (the "AUD Term Loan")(3) 219,871 (2,389 ) 217,482 221,165 233,955 (3,084 ) 230,871 235,645 UK Bilateral Revolving Credit Facility (the "UK Bilateral Facility")(4) 172,180 (1,845 ) 170,335 172,180 178,299 (2,357 ) 175,942 178,299 4 3 / 8 % Senior Notes due 2021 (the "4 3 / 8 % Notes")(5) 500,000 (2,866 ) 497,134 503,750 500,000 (4,155 ) 495,845 488,750 6% Senior Notes due 2023 (the "6% Notes due 2023")(5) 600,000 (4,302 ) 595,698 615,000 600,000 (5,126 ) 594,874 606,000 5 3 / 8 % CAD Senior Notes due 2023 (the "CAD Notes") 188,811 (2,173 ) 186,638 194,475 183,403 (2,506 ) 180,897 186,154 5 3 / 4 % Senior Subordinated Notes due 2024 (the "5 3 / 4 % Notes")(5) 1,000,000 (6,752 ) 993,248 1,010,000 1,000,000 (7,782 ) 992,218 940,000 3% Euro Senior Notes due 2025 (the "Euro Notes")(5) 327,508 (3,622 ) 323,886 334,877 343,347 (4,098 ) 339,249 321,029 3 7 / 8 % GBP Senior Notes due 2025 (the "GBP Notes") 491,943 (5,651 ) 486,292 493,173 509,425 (6,573 ) 502,852 453,811 5 3 / 8 % Senior Notes due 2026 (the "5 3 / 8 % Notes") 250,000 (2,863 ) 247,137 257,500 250,000 (3,185 ) 246,815 224,375 4 7 / 8 % Senior Notes due 2027 (the "4 7 / 8 % Notes due 2027")(5) 1,000,000 (11,375 ) 988,625 1,022,500 1,000,000 (12,442 ) 987,558 855,000 5 1 / 4 % Senior Notes due 2028 (the "5 1 / 4 % Notes")(5) 825,000 (10,037 ) 814,963 852,844 825,000 (10,923 ) 814,077 713,625 4 7 / 8 % Senior Notes due 2029 (the "4 7 / 8 % Notes due 2029")(5) 1,000,000 (14,451 ) 985,549 1,015,000 — — — — Real Estate Mortgages, Financing Lease Liabilities and Other 533,549 (444 ) 533,105 533,549 606,702 (171 ) 606,531 606,702 Accounts Receivable Securitization Program(6) 271,562 (115 ) 271,447 271,562 221,673 (218 ) 221,455 221,673 Mortgage Securitization Program(7) 50,000 (1,019 ) 48,981 50,000 50,000 (1,128 ) 48,872 50,000 Total Long-term Debt 8,704,642 (89,473 ) 8,615,169 8,229,430 (86,607 ) 8,142,823 Less Current Portion (394,822 ) — (394,822 ) (126,406 ) — (126,406 ) Long-term Debt, Net of Current Portion $ 8,309,820 $ (89,473 ) $ 8,220,347 $ 8,103,024 $ (86,607 ) $ 8,016,417 ______________________________________________________________ (1) Collectively, the credit agreement ("Credit Agreement"). The Credit Agreement consists of a revolving credit facility (the "Revolving Credit Facility") and a term loan (the "Term Loan A"). The Credit Agreement is scheduled to mature on June 3, 2023. Of the $354,879 of outstanding borrowings under the Revolving Credit Facility as of September 30, 2019, 221,900 was denominated in United States dollars, 72,000 was denominated in Canadian dollars and 72,000 was denominated in Euros. In addition, we also had various outstanding letters of credit totaling $16,843 . The remaining amount available for borrowing under the Revolving Credit Facility as of September 30, 2019 was $1,378,278 (which amount represents the maximum availability as of such date). The average interest rate in effect under the Credit Agreement was 3.5% as of September 30, 2019 . The average interest rate in effect under the Revolving Credit Facility as of September 30, 2019 was 3.3% and the interest rate in effect under Term Loan A as of September 30, 2019 was 3.8% . (2) In connection with the 2018 First Amendment (as defined in Note 5 to Notes to Consolidated Financial Statements included in our Annual Report), Iron Mountain Information Management, LLC ("IMIM") entered into an incremental term loan activation notice (the "Activation Notice") with certain lenders pursuant to which the lenders party to the Activation Notice agreed to provide commitments to fund an incremental term loan B in the amount of $700,000 (the "Term Loan B"). On March 26, 2018, IMIM borrowed the full amount of the Term Loan B. The Term Loan B is scheduled to mature on January 2, 2026. The interest rate in effect as of September 30, 2019 was 3.8% . The amount of debt for the Term Loan B reflects an unamortized original issue discount of $1,411 and $1,581 as of September 30, 2019 and December 31, 2018, respectively. (3) The interest rate in effect as of September 30, 2019 was 4.9% . We had 327,500 Australian dollars outstanding on the AUD Term Loan as of September 30, 2019. The amount of debt for the AUD Term Loan reflects an unamortized original issue discount of $1,294 and $1,690 as of September 30, 2019 and December 31, 2018, respectively. (4) The interest rate in effect as of September 30, 2019 was 3.0% . (5) Collectively, the "Parent Notes". (6) The interest rate in effect as of September 30, 2019 was 3.1% . The Accounts Receivable Securitization Program terminates on July 30, 2020, at which point all obligations under the program become due. The full amount outstanding under the Accounts Receivable Securitization Program is classified within the current portion of long-term debt in our Condensed Consolidated Balance Sheet as of September 30, 2019. (7) The interest rate in effect as of September 30, 2019 was 3.5% . See Note 4 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding our Credit Agreement and our other 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 September 30, 2019 are consistent with the levels of the fair value hierarchy used to determine the fair value of our debt as of December 31, 2018 (which are disclosed in our Annual Report). Additionally, see Note 5 to Notes to Consolidated Financial Statements included in our Annual Report for information regarding which of our consolidated subsidiaries guarantee certain of our debt instruments. There have been no material changes to our long-term debt since December 31, 2018 other than the issuance of the 4 7 / 8 % Senior Notes due 2029, as described below. See Note 3 for information regarding the forward-starting interest rate swap agreements and the cross-currency swap agreements outstanding at September 30, 2019. Issuance of the 4 7 / 8 % Senior Notes due 2029 In September 2019, IMI completed a private offering of $1,000,000 in aggregate principal amount of the 4 7 / 8 % Notes due 2029. The 4 7 / 8 % Notes due 2029 were issued at par. The net proceeds of approximately $987,500 from the 4 7 / 8 % Notes due 2029, after deducting the initial purchasers' commissions, were used to repay outstanding borrowings under the Revolving Credit Facility. Cash Pooling As described in greater detail in Note 4 to Notes to Consolidated Financial Statements included in our Annual Report, certain of our subsidiaries participate in cash pooling arrangements (the “Cash Pools”) in order to help manage global liquidity requirements. We currently utilize two separate cash pools, one of which we utilize to manage global liquidity requirements for our QRSs (the "QRS Cash Pool") and the other for our TRSs (the "TRS Cash Pool"). The approximate amount of the net cash position for our QRS Cash Pool and the TRS Cash Pool and the approximate amount of the gross position and outstanding debit balances for each of these pools as of September 30, 2019 and December 31, 2018 are as follows: September 30, 2019 December 31, 2018 Gross Cash Position Outstanding Debit Balances Net Cash Position Gross Cash Position Outstanding Debit Balances Net Cash Position QRS Cash Pool $ 358,200 $ (355,800 ) $ 2,400 $ 300,800 $ (298,800 ) $ 2,000 TRS Cash Pool 302,200 (296,300 ) 5,900 281,500 (279,300 ) 2,200 The net cash position balances as of September 30, 2019 and December 31, 2018 are reflected as cash and cash equivalents in the Condensed Consolidated Balance Sheets. Letters of Credit As of September 30, 2019, we had outstanding letters of credit totaling $35,241 , of which $16,843 reduce our borrowing capacity under the Revolving Credit Facility (as described above). The letters of credit expire at various dates between December 2019 and August 2027. Debt Covenants 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 September 30, 2019 and December 31, 2018, as well as our leverage ratio under our indentures as of September 30, 2019 and December 31, 2018 are as follows: September 30, 2019 December 31, 2018 Maximum/Minimum Allowable Net total lease adjusted leverage ratio 5.8 5.6 Maximum allowable of 6.5 Net secured debt lease adjusted leverage ratio 2.3 2.6 Maximum allowable of 4.0 Bond leverage ratio (not lease adjusted) 6.1 5.8 Maximum allowable of 6.5-7.0(1) Fixed charge coverage ratio 2.1 2.2 Minimum allowable of 1.5 ______________________________________________________________ (1) The maximum allowable leverage ratio under our indentures for the 4 7 / 8 % Notes due 2029, the 4 7 / 8 % Notes due 2027, the GBP Notes and the 5 1 / 4 % Notes is 7.0 , while the maximum allowable leverage ratio under the indentures pertaining to our remaining senior and senior subordinated notes is 6.5 . In certain instances as provided in our indentures, we have the ability to incur additional indebtedness that would result in our bond leverage ratio exceeding the maximum allowable ratio under our indentures and still remain in compliance with the covenant. Noncompliance with these leverage and fixed charge coverage ratios would have a material adverse effect on our financial condition and liquidity.

Selected Consolidated Financial

Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors	9 Months Ended
	Sep. 30, 2019
Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors
Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors	Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors The following data summarizes the consolidating results of IMI on the equity method of accounting as of September 30, 2019 and December 31, 2018 and for the three and nine months ended September 30, 2019 and 2018 and are prepared on the same basis as the consolidated financial statements. The Parent Notes, the CAD Notes, the GBP Notes, and the 5 3 / 8 % Notes are guaranteed by the subsidiaries referred to below as the Guarantors. These subsidiaries are 100% owned by IMI. The guarantees are full and unconditional, as well as joint and several. Additionally, IMI guarantees the CAD Notes, which were issued by Iron Mountain Canada Operations ULC ("Canada Company"), the GBP Notes, which were issued by Iron Mountain (UK) PLC ("IM UK"), and the 5 3 / 8 % Notes, which were issued by Iron Mountain US Holdings, Inc., which is one of the Guarantors. Canada Company and IM UK do not guarantee the Parent Notes. The subsidiaries that do not guarantee the Parent Notes, the CAD Notes, the GBP Notes, and the 5 3 / 8 % Notes 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 or a Non-Guarantor. If such a change occurs, the amount of investment in subsidiaries in the below Condensed Consolidated Balance Sheets and equity in the earnings (losses) of subsidiaries, net of tax in the below Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) with respect to the relevant Parent, Guarantors, Non-Guarantors and Eliminations columns also would change. CONDENSED CONSOLIDATED BALANCE SHEETS September 30, 2019 Parent Guarantors Non- Eliminations Consolidated Assets Current Assets: Cash and cash equivalents(1) $ 10 $ 157,771 $ 162,024 $ (133,027 ) $ 186,778 Accounts receivable — 58,400 763,526 — 821,926 Intercompany receivable — 456,222 — (456,222 ) — Prepaid expenses and other — 96,737 98,481 (29 ) 195,189 Total Current Assets 10 769,130 1,024,031 (589,278 ) 1,203,893 Property, Plant and Equipment, Net 122 3,049,090 1,507,507 — 4,556,719 Other Assets, Net: Long-term notes receivable from affiliates and intercompany receivable 5,180,133 — — (5,180,133 ) — Investment in subsidiaries 1,940,454 1,051,609 — (2,992,063 ) — Goodwill — 2,853,466 1,568,529 — 4,421,995 Operating lease right-of-use assets — 939,631 825,865 — 1,765,496 Other 1,972 945,025 682,067 — 1,629,064 Total Other Assets, Net 7,122,559 5,789,731 3,076,461 (8,172,196 ) 7,816,555 Total Assets $ 7,122,691 $ 9,607,951 $ 5,607,999 $ (8,761,474 ) $ 13,577,167 Liabilities and Equity Intercompany Payable $ 167,220 $ — $ 289,002 $ (456,222 ) $ — Debit Balances Under Cash Pools — — 133,027 (133,027 ) — Current Portion of Long-Term Debt — 54,028 340,823 (29 ) 394,822 Total Other Current Liabilities (includes current portion of operating lease liabilities) 233,492 685,486 516,311 — 1,435,289 Long-Term Debt, Net of Current Portion 5,199,103 1,457,499 1,563,745 — 8,220,347 Long-Term Operating Lease Liabilities, Net of Current Portion — 871,377 755,530 — 1,626,907 Long-Term Notes Payable to Affiliates and Intercompany Payable — 5,180,133 — (5,180,133 ) — Other Long-term Liabilities 12,046 52,842 254,966 — 319,854 Commitments and Contingencies (See Note 8) Redeemable Noncontrolling Interests — — 68,099 — 68,099 Total Iron Mountain Incorporated Stockholders' Equity 1,510,830 1,306,586 1,685,477 (2,992,063 ) 1,510,830 Noncontrolling Interests — — 1,019 — 1,019 Total Equity 1,510,830 1,306,586 1,686,496 (2,992,063 ) 1,511,849 Total Liabilities and Equity $ 7,122,691 $ 9,607,951 $ 5,607,999 $ (8,761,474 ) $ 13,577,167 ______________________________________________________________ (1) Included within Cash and Cash Equivalents at September 30, 2019 is approximately $141,300 and $0 of cash on deposit associated with our Cash Pools for the Guarantors and Non-Guarantors, respectively. CONDENSED CONSOLIDATED BALANCE SHEETS (Continued) December 31, 2018 Parent Guarantors Non- Eliminations Consolidated Assets Current Assets: Cash and cash equivalents(1) $ 132 $ 63,407 $ 169,318 $ (67,372 ) $ 165,485 Accounts receivable — 47,472 799,417 — 846,889 Intercompany receivable — 821,324 — (821,324 ) — Prepaid expenses and other 93 109,480 86,196 (29 ) 195,740 Total Current Assets 225 1,041,683 1,054,931 (888,725 ) 1,208,114 Property, Plant and Equipment, Net 190 3,010,767 1,478,600 — 4,489,557 Other Assets, Net: Long-term notes receivable from affiliates and intercompany receivable 4,954,686 — — (4,954,686 ) — Investment in subsidiaries 1,862,048 983,018 — (2,845,066 ) — Goodwill — 2,861,381 1,579,649 — 4,441,030 Other — 982,932 735,585 — 1,718,517 Total Other Assets, Net 6,816,734 4,827,331 2,315,234 (7,799,752 ) 6,159,547 Total Assets $ 6,817,149 $ 8,879,781 $ 4,848,765 $ (8,688,477 ) $ 11,857,218 Liabilities and Equity Intercompany Payable $ 462,927 $ — $ 358,397 $ (821,324 ) $ — Debit Balances Under Cash Pools — 10,612 56,760 (67,372 ) — Current Portion of Long-Term Debt — 63,859 62,576 (29 ) 126,406 Total Other Current Liabilities 268,373 618,513 477,483 — 1,364,369 Long-Term Debt, Net of Current Portion 4,223,822 1,878,079 1,914,516 — 8,016,417 Long-Term Notes Payable to Affiliates and Intercompany Payable — 4,954,686 — (4,954,686 ) — Other Long-term Liabilities 973 116,895 299,163 — 417,031 Commitments and Contingencies (See Note 8) Redeemable Noncontrolling Interests — — 70,532 — 70,532 Total Iron Mountain Incorporated Stockholders' Equity 1,861,054 1,237,137 1,607,929 (2,845,066 ) 1,861,054 Noncontrolling Interests — — 1,409 — 1,409 Total Equity 1,861,054 1,237,137 1,609,338 (2,845,066 ) 1,862,463 Total Liabilities and Equity $ 6,817,149 $ 8,879,781 $ 4,848,765 $ (8,688,477 ) $ 11,857,218 ______________________________________________________________ (1) Included within Cash and Cash Equivalents at December 31, 2018 is approximately $58,900 and $12,700 of cash on deposit associated with our Cash Pools for the Guarantors and Non-Guarantors, respectively. CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) Three Months Ended September 30, 2019 Parent Guarantors Non- Eliminations Consolidated Revenues: Storage rental $ — $ 416,967 $ 256,351 $ — $ 673,318 Service — 245,584 143,322 — 388,906 Intercompany revenues — 1,173 5,631 (6,804 ) — Total Revenues — 663,724 405,304 (6,804 ) 1,062,224 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 262,183 189,134 — 451,317 Intercompany — 5,631 1,173 (6,804 ) — Selling, general and administrative 161 162,052 76,943 — 239,156 Depreciation and amortization 23 100,023 57,515 — 157,561 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (8,922 ) (362 ) — (9,284 ) Total Operating Expenses 184 520,967 324,403 (6,804 ) 838,750 Operating (Loss) Income (184 ) 142,757 80,901 — 223,474 Interest Expense (Income), Net(1) 52,166 6,074 48,437 — 106,677 Other (Income) Expense, Net (596 ) 11,577 (24,396 ) — (13,415 ) (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (51,754 ) 125,106 56,860 — 130,212 Provision (Benefit) for Income Taxes — 12,814 9,114 — 21,928 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (159,429 ) (46,345 ) — 205,774 — Income (Loss) from Continuing Operations 107,675 158,637 47,746 (205,774 ) 108,284 Income (Loss) from Discontinued Operations, Net of Tax — — — — — Net Income (Loss) 107,675 158,637 47,746 (205,774 ) 108,284 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 609 — 609 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 107,675 $ 158,637 $ 47,137 $ (205,774 ) $ 107,675 Net Income (Loss) $ 107,675 $ 158,637 $ 47,746 $ (205,774 ) $ 108,284 Other Comprehensive (Loss) Income: Foreign Currency Translation Adjustments 13,101 — (96,696 ) — (83,595 ) Change in Fair Value of Derivative Instruments (1,496 ) — — — (1,496 ) Equity in Other Comprehensive (Loss) Income of Subsidiaries (95,987 ) (81,135 ) — 177,122 — Total Other Comprehensive (Loss) Income (84,382 ) (81,135 ) (96,696 ) 177,122 (85,091 ) Comprehensive Income (Loss) 23,293 77,502 (48,950 ) (28,652 ) 23,193 Comprehensive (Loss) Income Attributable to Noncontrolling Interests — — (100 ) — (100 ) Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 23,293 $ 77,502 $ (48,850 ) $ (28,652 ) $ 23,293 __________________________________________________________ (1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements. CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued) Three Months Ended September 30, 2018 Parent Guarantors Non- Eliminations Consolidated Revenues: Storage rental $ — $ 404,397 $ 252,576 $ — $ 656,973 Service — 250,471 153,547 — 404,018 Intercompany revenues — 1,192 4,330 (5,522 ) — Total Revenues — 656,060 410,453 (5,522 ) 1,060,991 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 254,068 193,950 — 448,018 Intercompany cost of sales — 4,330 1,192 (5,522 ) — Selling, general and administrative (427 ) 177,777 82,579 — 259,929 Depreciation and amortization 31 100,210 57,556 — 157,797 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (1,669 ) 1,281 — (388 ) Total Operating Expenses (396 ) 534,716 336,558 (5,522 ) 865,356 Operating Income (Loss) 396 121,344 73,895 — 195,635 Interest Expense (Income), Net(1) 49,964 3,151 50,823 — 103,938 Other Expense (Income), Net 439 4,155 (4,269 ) — 325 (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (50,007 ) 114,038 27,341 — 91,372 Provision (Benefit) for Income Taxes — 9,012 5,011 — 14,023 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (115,876 ) (25,414 ) — 141,290 — Income (Loss) from Continuing Operations 65,869 130,440 22,330 (141,290 ) 77,349 (Loss) Income from Discontinued Operations — (11,588 ) (17 ) — (11,605 ) Net Income (Loss) 65,869 118,852 22,313 (141,290 ) 65,744 Less: Net (Loss) Income Attributable to Noncontrolling Interests — — (125 ) — (125 ) Net Income (Loss) Attributable to Iron Mountain Incorporated $ 65,869 $ 118,852 $ 22,438 $ (141,290 ) $ 65,869 Net Income (Loss) $ 65,869 $ 118,852 $ 22,313 $ (141,290 ) $ 65,744 Other Comprehensive (Loss) Income: Foreign Currency Translation Adjustment 2,139 — (26,908 ) — (24,769 ) Change in Fair Value of Derivative Instruments 1,980 — — — 1,980 Equity in Other Comprehensive (Loss) Income of Subsidiaries (24,929 ) (14,443 ) — 39,372 — Total Other Comprehensive (Loss) Income (20,810 ) (14,443 ) (26,908 ) 39,372 (22,789 ) Comprehensive Income (Loss) 45,059 104,409 (4,595 ) (101,918 ) 42,955 Comprehensive (Loss) Income Attributable to Noncontrolling Interests — — (2,104 ) — (2,104 ) Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 45,059 $ 104,409 $ (2,491 ) $ (101,918 ) $ 45,059 _____________________________________________________________ (1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements. CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued) Nine Months Ended September 30, 2019 Parent Guarantors Non- Eliminations Consolidated Revenues: Storage rental $ — $ 1,235,353 $ 770,227 $ — $ 2,005,580 Service — 733,247 444,167 — 1,177,414 Intercompany revenues — 3,485 15,094 (18,579 ) — Total Revenues — 1,972,085 1,229,488 (18,579 ) 3,182,994 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 788,864 589,099 — 1,377,963 Intercompany cost of sales — 15,094 3,485 (18,579 ) — Selling, general and administrative 310 523,844 238,325 — 762,479 Depreciation and amortization 68 308,284 176,023 — 484,375 Loss (Gain) on disposal/write-down of property, plant and equipment, net — 18,436 (35,523 ) — (17,087 ) Total Operating Expenses 378 1,654,522 971,409 (18,579 ) 2,607,730 Operating (Loss) Income (378 ) 317,563 258,079 — 575,264 Interest Expense (Income), Net(1) 151,392 19,128 143,907 — 314,427 Other (Income) Expense, Net (55 ) 16,636 (29,978 ) — (13,397 ) (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (151,715 ) 281,799 144,150 — 274,234 Provision (Benefit) for Income Taxes — 15,268 27,859 — 43,127 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (381,392 ) (111,897 ) — 493,289 — Income (Loss) from Continuing Operations 229,677 378,428 116,291 (493,289 ) 231,107 Income (Loss) from Discontinued Operations — 120 (16 ) — 104 Net Income (Loss) 229,677 378,548 116,275 (493,289 ) 231,211 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 1,534 — 1,534 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 229,677 $ 378,548 $ 114,741 $ (493,289 ) $ 229,677 Net Income (Loss) $ 229,677 $ 378,548 $ 116,275 $ (493,289 ) $ 231,211 Other Comprehensive (Loss) Income: Foreign Currency Translation Adjustments 14,962 — (86,157 ) — (71,195 ) Change in Fair Value of Derivative Instruments (9,101 ) — — — (9,101 ) Equity in Other Comprehensive (Loss) Income of Subsidiaries (86,400 ) (72,858 ) — 159,258 — Total Other Comprehensive (Loss) Income (80,539 ) (72,858 ) (86,157 ) 159,258 (80,296 ) Comprehensive Income (Loss) 149,138 305,690 30,118 (334,031 ) 150,915 Comprehensive Income (Loss) Attributable to Noncontrolling Interests — — 1,777 — 1,777 Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 149,138 $ 305,690 $ 28,341 $ (334,031 ) $ 149,138 _____________________________________________________________ (1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements. CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued) Nine Months Ended September 30, 2018 Parent Guarantors Non- Eliminations Consolidated Revenues: Storage rental $ — $ 1,201,035 $ 762,526 $ — $ 1,963,561 Service — 726,915 473,796 — 1,200,711 Intercompany revenues — 3,613 13,126 (16,739 ) — Total Revenues — 1,931,563 1,249,448 (16,739 ) 3,164,272 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 753,837 594,366 — 1,348,203 Intercompany cost of sales — 13,126 3,613 (16,739 ) — Selling, general and administrative (348 ) 531,507 258,165 — 789,324 Depreciation and amortization 96 299,372 175,127 — 474,595 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (2,491 ) 427 — (2,064 ) Total Operating Expenses (252 ) 1,595,351 1,031,698 (16,739 ) 2,610,058 Operating Income (Loss) 252 336,212 217,750 — 554,214 Interest Expense (Income), Net(1) 150,218 4,863 148,755 — 303,836 Other Expense (Income), Net 2,049 12,323 (12,952 ) — 1,420 (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (152,015 ) 319,026 81,947 — 248,958 Provision (Benefit) for Income Taxes — 14,810 25,147 — 39,957 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (348,104 ) (54,395 ) — 402,499 — Income (Loss) from Continuing Operations 196,089 358,611 56,800 (402,499 ) 209,001 (Loss) Income from Discontinued Operations — (12,283 ) (144 ) — (12,427 ) Net Income (Loss) 196,089 346,328 56,656 (402,499 ) 196,574 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 485 — 485 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 196,089 $ 346,328 $ 56,171 $ (402,499 ) $ 196,089 Net Income (Loss) $ 196,089 $ 346,328 $ 56,656 $ (402,499 ) $ 196,574 Other Comprehensive (Loss) Income: Foreign Currency Translation Adjustment 6,761 — (139,051 ) — (132,290 ) Change in Fair Value of Derivative Instruments 4,183 — — — 4,183 Equity in Other Comprehensive (Loss) Income of Subsidiaries (135,215 ) (105,967 ) — 241,182 — Total Other Comprehensive (Loss) Income (124,271 ) (105,967 ) (139,051 ) 241,182 (128,107 ) Comprehensive Income (Loss) 71,818 240,361 (82,395 ) (161,317 ) 68,467 Comprehensive (Loss) Income Attributable to Noncontrolling Interests — — (3,351 ) — (3,351 ) Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 71,818 $ 240,361 $ (79,044 ) $ (161,317 ) $ 71,818 ______________________________________________________ (1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements. CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Nine Months Ended September 30, 2019 Parent Guarantors Non- Eliminations Consolidated Cash Flows from Operating Activities: Cash Flows from Operating Activities—Continuing Operations $ (161,288 ) $ 596,529 $ 212,904 $ — $ 648,145 Cash Flows from Operating Activities—Discontinued Operations — — — — — Cash Flows from Operating Activities (161,288 ) 596,529 212,904 — 648,145 Cash Flows from Investing Activities: Capital expenditures — (306,567 ) (227,047 ) — (533,614 ) Cash paid for acquisitions, net of cash acquired — (9,508 ) (46,991 ) — (56,499 ) Intercompany loans to subsidiaries (295,124 ) 6,526 — 288,598 — Acquisitions of customer relationships, customer inducements and data center lease-based intangibles — (86,052 ) (27,457 ) — (113,509 ) Investments in joint ventures (see Note 10) — (19,222 ) — — (19,222 ) Proceeds from sales of property and equipment and other, net — 33,031 49,117 — 82,148 Cash Flows from Investing Activities—Continuing Operations (295,124 ) (381,792 ) (252,378 ) 288,598 (640,696 ) Cash Flows from Investing Activities—Discontinued Operations — 2,564 2,497 — 5,061 Cash Flows from Investing Activities (295,124 ) (379,228 ) (249,881 ) 288,598 (635,635 ) Cash Flows from Financing Activities: Repayment of revolving credit facility, term loan facilities and other debt — (9,507,136 ) (3,183,555 ) — (12,690,691 ) Proceeds from revolving credit facility, term loan facilities and other debt — 9,068,245 3,188,031 — 12,256,276 Net proceeds from sales of senior notes 987,500 — — — 987,500 Debit (payments) balances under cash pools — (10,612 ) 76,267 (65,655 ) — Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net — — (1,464 ) — (1,464 ) Intercompany loans from parent — 326,566 (37,968 ) (288,598 ) — Parent cash dividends (528,908 ) — — — (528,908 ) Net (payments) proceeds associated with employee stock-based awards (2,059 ) — — — (2,059 ) Payment of debt financing and stock issuance costs (243 ) — (526 ) — (769 ) Cash Flows from Financing Activities—Continuing Operations 456,290 (122,937 ) 40,785 (354,253 ) 19,885 Cash Flows from Financing Activities—Discontinued Operations — — — — — Cash Flows from Financing Activities 456,290 (122,937 ) 40,785 (354,253 ) 19,885 Effect of exchange rates on cash and cash equivalents — — (11,102 ) — (11,102 ) (Decrease) Increase in cash and cash equivalents (122 ) 94,364 (7,294 ) (65,655 ) 21,293 Cash and cash equivalents, including Restricted Cash, beginning of period 132 63,407 169,318 (67,372 ) 165,485 Cash and cash equivalents, including Restricted Cash, $ 10 $ 157,771 $ 162,024 $ (133,027 ) $ 186,778 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued) Nine Months Ended September 30, 2018 Parent Guarantors Non- Eliminations Consolidated Cash Flows from Operating Activities: Cash Flows from Operating Activities—Continuing Operations $ (208,384 ) $ 644,493 $ 189,429 $ — $ 625,538 Cash Flows from Operating Activities—Discontinued Operations — (995 ) — — (995 ) Cash Flows from Operating Activities (208,384 ) 643,498 189,429 — 624,543 Cash Flows from Investing Activities: Capital expenditures — (224,594 ) (105,359 ) — (329,953 ) Cash paid for acquisitions, net of cash acquired — (1,332,235 ) (378,776 ) — (1,711,011 ) Intercompany loans to subsidiaries 629,918 (23,092 ) — (606,826 ) — Acquisitions of customer relationships, customer inducements and data center lease-based intangibles — (47,531 ) (16,030 ) — (63,561 ) Net proceeds from Divestments — 1,019 — — 1,019 Proceeds from sales of property and equipment and other, net — 283 430 — 713 Cash Flows from Investing Activities—Continuing Operations 629,918 (1,626,150 ) (499,735 ) (606,826 ) (2,102,793 ) Cash Flows from Investing Activities—Discontinued Operations — — — — — Cash Flows from Investing Activities 629,918 (1,626,150 ) (499,735 ) (606,826 ) (2,102,793 ) Cash Flows from Financing Activities: Repayment of revolving credit facility, term loan facilities and other debt — (5,386,024 ) (5,840,147 ) — (11,226,171 ) Proceeds from revolving credit facility, term loan facilities and other debt — 6,456,050 5,980,967 — 12,437,017 Debit (payments) balances under cash pools — (832 ) (389 ) 1,221 — Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net — — (2,035 ) — (2,035 ) Intercompany loans from parent — (664,591 ) 57,765 606,826 — Parent cash dividends (505,403 ) — — — (505,403 ) Net (payments) proceeds associated with employee stock-based awards (2,800 ) — — — (2,800 ) Net proceeds associated with the Over-Allotment Option exercise 76,192 — — — 76,192 Net proceeds associated with the At the Market (ATM) Program 8,716 — — — 8,716 Payment of debt financing and stock issuance costs (412 ) (12,388 ) (3,157 ) — (15,957 ) Cash Flows from Financing Activities—Continuing Operations (423,707 ) 392,215 193,004 608,047 769,559 Cash Flows from Financing Activities—Discontinued Operations — — — — — Cash Flows from Financing Activities (423,707 ) 392,215 193,004 608,047 769,559 Effect of exchange rates on cash and cash equivalents — — (19,332 ) — (19,332 ) (Decrease) Increase in cash and cash equivalents (2,173 ) (590,437 ) (136,634 ) 1,221 (728,023 ) Cash and cash equivalents, including Restricted Cash, beginning of period 2,433 642,408 375,584 (94,726 ) 925,699 Cash and cash equivalents, including Restricted Cash, end of period $ 260 $ 51,971 $ 238,950 $ (93,505 ) $ 197,676

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Segment Information	Our six reportable operating segments as of December 31, 2018 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 • Global Data Center Business • Corporate and Other Business There have been no changes made to our reportable operating segments since December 31, 2018, other than the impact of the Consumer Storage Transaction (as defined in Note 10). Prior to the Consumer Storage Transaction, our consumer storage business was a component of our Corporate and Other Business Segment. The previously reported segment information has been restated to conform to the current presentation and reflects the changes to our reportable operating segments that occurred in fourth quarter of 2018 as described in Note 9 to Notes to Consolidated Financial Statements included in our Annual Report. The operations associated with acquisitions completed during the first nine months of 2019 have been incorporated into our existing reportable operating segments. An analysis of our business segment information and reconciliation to the accompanying Condensed Consolidated Financial Statements is as follows: North American North American Western European Business Other International Business Global Data Center Business Corporate Business Total For the Three Months Ended September 30, 2019 Total Revenues $ 542,044 $ 96,552 $ 121,437 $ 197,728 $ 64,418 $ 40,045 $ 1,062,224 Storage Rental 317,820 66,497 78,009 128,715 62,001 20,276 673,318 Service 224,224 30,055 43,428 69,013 2,417 19,769 388,906 Depreciation and Amortization 58,801 6,709 13,257 30,008 34,067 14,719 157,561 Depreciation 45,394 4,620 9,137 17,512 20,193 11,296 108,152 Amortization 13,407 2,089 4,120 12,496 13,874 3,423 49,409 Adjusted EBITDA 246,415 54,378 38,639 62,120 32,261 (58,112 ) 375,701 Expenditures for Segment Assets 64,098 2,822 18,125 43,290 58,060 14,883 201,278 Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations) 46,376 2,822 16,191 28,944 57,267 14,883 166,483 Cash Paid for Acquisitions, Net of Cash Acquired — — — 11,848 — — 11,848 Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs and third-party commissions 17,722 — 1,934 2,498 793 — 22,947 For the Three Months Ended September 30, 2018 Total Revenues $ 539,603 $ 97,477 $ 126,354 $ 200,639 $ 63,380 $ 33,538 $ 1,060,991 Storage Rental 306,633 67,779 79,492 124,920 60,039 18,110 656,973 Service 232,970 29,698 46,862 75,719 3,341 15,428 404,018 Depreciation and Amortization 59,869 9,472 14,316 31,487 27,965 14,688 157,797 Depreciation 46,756 7,277 9,996 19,272 16,431 13,258 112,990 Amortization 13,113 2,195 4,320 12,215 11,534 1,430 44,807 Adjusted EBITDA 248,600 53,484 40,817 60,106 27,299 (67,976 ) 362,330 Expenditures for Segment Assets 53,665 5,033 2,774 49,330 42,585 29,435 182,822 Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations) 31,373 5,033 551 21,929 41,896 11,570 112,352 Cash Paid for Acquisitions, Net of Cash Acquired — — — 26,277 — 17,865 44,142 Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs 22,292 — 2,223 1,124 689 — 26,328 North American North American Western European Business Other International Business Global Data Center Business Corporate Business Total As of and for the Nine Months Ended September 30, 2019 Total Revenues $ 1,608,697 $ 289,714 $ 377,517 $ 598,507 $ 188,245 $ 120,314 $ 3,182,994 Storage Rental 938,161 199,819 237,258 387,086 182,301 60,955 2,005,580 Service 670,536 89,895 140,259 211,421 5,944 59,359 1,177,414 Depreciation and Amortization 181,494 27,011 42,842 91,367 98,370 43,291 484,375 Depreciation 137,801 20,451 30,560 53,563 58,233 35,877 336,485 Amortization 43,693 6,560 12,282 37,804 40,137 7,414 147,890 Adjusted EBITDA 715,683 157,998 122,011 178,993 85,913 (209,449 ) 1,051,149 Total Assets(1) 5,742,593 860,101 1,319,442 2,620,709 2,349,917 684,405 13,577,167 Expenditures for Segment Assets 166,908 13,708 72,560 93,373 314,242 42,831 703,622 Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations) 103,660 13,708 41,031 56,048 279,856 39,311 533,614 Cash Paid for Acquisitions, Net of Cash Acquired 9,876 — 11,850 31,253 — 3,520 56,499 Acquisitions of Customer Relationships and Customer Inducements and Contract Fulfillment Costs and third-party commissions 53,372 — 19,679 6,072 34,386 — 113,509 As of and for the Nine Months Ended September 30, 2018 Total Revenues $ 1,605,526 $ 297,472 $ 393,869 $ 618,933 $ 164,878 $ 83,594 $ 3,164,272 Storage Rental 917,347 205,833 245,883 386,278 157,479 50,741 1,963,561 Service 688,179 91,639 147,986 232,655 7,399 32,853 1,200,711 Depreciation and Amortization 183,591 29,114 49,372 93,724 72,736 46,058 474,595 Depreciation 144,146 22,517 34,575 56,535 40,931 39,219 337,923 Amortization 39,445 6,597 14,797 37,189 31,805 6,839 136,672 Adjusted EBITDA 719,199 162,616 131,377 181,305 72,990 (202,027 ) 1,065,460 Total Assets(1) 4,961,149 823,868 1,104,221 2,328,574 2,159,955 433,103 11,810,870 Expenditures for Segment Assets 138,210 15,529 37,813 111,777 1,745,770 55,426 2,104,525 Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations) 86,365 15,529 31,694 60,992 98,169 37,204 329,953 Cash Paid for Acquisitions, Net of Cash Acquired 1,551 — — 45,673 1,645,922 17,865 1,711,011 Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs 50,294 — 6,119 5,112 1,679 357 63,561 ______________________________________________________________ (1) Excludes all intercompany receivables or payables and investment in subsidiary balances. Total assets as of September 30, 2019 reflects the adoption of ASU 2016-02. The accounting policies of the reportable operating segments are the same as those described in Note 2 and in Note 2 to Notes to Consolidated Financial Statements included 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, net (including real estate); (ii) intangible impairments; (iii) other (income) expense, net (which includes foreign currency transaction (gains) losses, net); and (iv) Significant Acquisition 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 for the three and nine months ended September 30, 2019 and 2018 is as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Adjusted EBITDA $ 375,701 $ 362,330 $ 1,051,149 $ 1,065,460 (Add)/Deduct: Provision (Benefit) for Income Taxes 21,928 14,023 43,127 39,957 Other (Income) Expense, Net (13,415 ) 325 (13,397 ) 1,420 Interest Expense, Net 106,677 103,938 314,427 303,836 (Gain) Loss on disposal/write-down of property, plant and equipment, net (9,284 ) (388 ) (17,087 ) (2,064 ) Depreciation and amortization 157,561 157,797 484,375 474,595 Significant Acquisition Costs(1) 3,950 9,286 8,597 38,715 Income (Loss) from Continuing Operations $ 108,284 $ 77,349 $ 231,107 $ 209,001 _______________________________________________________________________________ (1) As defined in Note 9 to Notes to Consolidated Financial Statements included in our Annual Report. Information as to our revenues by product and service lines by segment for the three and nine months ended September 30, 2019 and 2018 are as follows: North American Records and Information Management Business North American Data Management Business Western European Business Other International Business Global Data Center Business Corporate and Other Business Total Consolidated For the Three Months Ended September 30, 2019 Records Management(1) $ 452,336 $ — $ 103,683 $ 169,748 $ — $ 23,837 $ 749,604 Data Management(1) — 93,016 17,551 18,884 — 16,208 145,659 Information Destruction(1)(2) 89,708 3,536 203 9,096 — — 102,543 Data Center — — — — 64,418 — 64,418 Total Revenues $ 542,044 $ 96,552 $ 121,437 $ 197,728 $ 64,418 $ 40,045 $ 1,062,224 For the Three Months Ended September 30, 2018 Records Management(1) $ 441,102 $ — $ 107,388 $ 173,426 $ — $ 19,183 $ 741,099 Data Management(1) — 94,917 18,914 18,541 — 14,355 146,727 Information Destruction(1)(2) 98,501 2,560 52 8,672 — — 109,785 Data Center — — — — 63,380 — 63,380 Total Revenues $ 539,603 $ 97,477 $ 126,354 $ 200,639 $ 63,380 $ 33,538 $ 1,060,991 For the Nine Months Ended September 30, 2019 Records Management(1) $ 1,322,488 $ — $ 321,759 $ 515,158 $ — $ 74,377 $ 2,233,782 Data Management(1) — 280,157 54,345 56,898 — 45,937 437,337 Information Destruction(1)(2) 286,209 9,557 1,413 26,451 — — 323,630 Data Center — — — — 188,245 — 188,245 Total Revenues $ 1,608,697 $ 289,714 $ 377,517 $ 598,507 $ 188,245 $ 120,314 $ 3,182,994 For the Nine Months Ended September 30, 2018 Records Management(1) $ 1,317,505 $ — $ 335,072 $ 533,950 $ — $ 41,388 $ 2,227,915 Data Management(1) — 290,279 58,526 58,246 — 42,206 449,257 Information Destruction(1)(2) 288,021 7,193 271 26,737 — — 322,222 Data Center — — — — 164,878 — 164,878 Total Revenues $ 1,605,526 $ 297,472 $ 393,869 $ 618,933 $ 164,878 $ 83,594 $ 3,164,272 ____________________________________________________________________________ (1) Each of the offerings within our product and service lines has a component of revenue that is storage rental related and a component that is service revenues, except for information destruction, which does not have a storage rental component. (2) Includes secure shredding services.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	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. There have been no material updates or changes to the matters disclosed in Note 10 to Notes to Consolidated Financial Statements included in our Annual Report. We believe that the resolution of the matters disclosed in Note 10 to Notes to Consolidated Financial Statements included in our Annual Report will not have a material impact on our consolidated financial condition, results of operations or cash flows. We have estimated a reasonably possible range for all loss contingencies, including those disclosed in Note 10 to Notes to Consolidated Financial Statements included in our Annual Report and the item below, and believe it is reasonably possible that we could incur aggregate losses in addition to amounts currently accrued for all matters up to an additional $17,000 over the next several years, of which certain amounts would be covered by insurance or indemnity arrangements. In June 2019, we received a notification of assessment from tax and customs authorities in the Netherlands related to a VAT liability of approximately 16,800 Euros. The notification of assessment is related to our customs clearing and logistics business in the Netherlands, which we acquired through the acquisition of Bonded Services of America, Inc. and Bonded Services Acquisition, Ltd. (collectively, “Bonded”) in September 2017. As part of the import and declaration services we provide in the Netherlands, we file import declaration forms to the customs authorities for all goods imported in a particular month and calculate the amount of VAT that is due on the goods being imported. In certain instances, we remit import VAT to the Dutch tax authorities and subsequently are reimbursed by the entity the goods are being imported on behalf of. In other instances, however, the payment of VAT may be deferred and paid upon the sale of the goods to the ultimate end customer in cases where the entity receiving the goods holds a valid license allowing for the deferment of VAT (referred to as an Article 23 license). In the notification of assessment, the Dutch tax authorities have asserted that (i) we inappropriately deferred VAT for goods imported under Article 23 for certain of our customers between March 2017 and August 2018 and (ii) we are liable for the amount of VAT related to those goods for which VAT was inappropriately deferred. We have responded to the notification of assessment and have requested additional information regarding the matter from the Dutch tax authorities.

Stockholders' Equity Matters

Stockholders' Equity Matters	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Stockholders' Equity Matters	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 2018 and the first nine months of 2019, our board of directors declared the following dividends: Declaration Date Dividend Record Date Total Payment Date February 14, 2018 $ 0.5875 March 15, 2018 $ 167,969 April 2, 2018 May 24, 2018 0.5875 June 15, 2018 168,078 July 2, 2018 July 24, 2018 0.5875 September 17, 2018 168,148 October 2, 2018 October 25, 2018 0.6110 December 17, 2018 174,935 January 3, 2019 February 7, 2019 0.6110 March 15, 2019 175,242 April 2, 2019 May 22, 2019 0.6110 June 17, 2019 175,389 July 2, 2019 July 26, 2019 0.6110 September 16, 2019 175,434 October 2, 2019 At The Market (ATM) Equity Program As described in greater detail in Note 12 to Notes to Consolidated Financial Statements included in our Annual Report, we entered into a distribution agreement with a syndicate of 10 banks (the “Agents”) pursuant to which we may sell, from time to time, up to an aggregate sales price of $500,000 of our common stock through the Agents (the “At The Market (ATM) Equity Program”). There were no shares of common stock sold under the At The Market (ATM) Equity Program during the nine months ended September 30, 2019. As of September 30, 2019, the remaining aggregate sale price of shares of our common stock available for distribution under the At The Market (ATM) Equity Program was approximately $431,200 .

Divestments

Divestments	9 Months Ended
	Sep. 30, 2019
Discontinued Operations and Disposal Groups [Abstract]
Divestments	Divestments On March 19, 2019, we contributed our customer contracts and certain intellectual property and other assets used by us to operate our consumer storage business in the United States and Canada (the "IM Consumer Storage Assets") and approximately $20,000 in cash (gross of certain transaction expenses) (the "Cash Contribution") to a joint venture entity, Makespace LLC (the "Makespace JV"), established by us and Makespace Labs, Inc. ("Makespace"), a consumer storage services provider (the "Consumer Storage Transaction"). Upon the closing of the Consumer Storage Transaction on March 19, 2019, the Makespace JV owned (i) the IM Consumer Storage Assets, (ii) the Cash Contribution and (iii) the customer contracts, intellectual property and certain other assets used by Makespace to operate its consumer storage business in the United States. As part of the Consumer Storage Transaction, we received an equity interest of approximately 34% in the Makespace JV (the "Makespace Investment"). In connection with the Consumer Storage Transaction and the Makespace Investment, we also entered into a storage and service agreement with the Makespace JV to provide certain storage and related services to the Makespace JV (see Note 12). We have concluded that the divestment of the IM Consumer Storage Assets in the Consumer Storage Transaction does not meet the criteria to be reported as a discontinued operation in our consolidated financial statements, as our decision to divest this business 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 this business are presented as a component of Income (loss) from continuing operations in our Condensed Consolidated Statements of Operations for the nine months ended September 30, 2019 through the closing date of the Consumer Storage Transaction and for the three and nine months ended September 30, 2018 and the cash flows associated with this business are presented as a component of cash flows from continuing operations in our Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2019 through the closing date of the Consumer Storage Transaction and for the nine months ended September 30, 2018. As a result of the Consumer Storage Transaction, we recorded a gain on sale of approximately $4,200 to Other (income) expense, net, in the first quarter of 2019, representing the excess of the fair value of the consideration received over the sum of (i) the carrying value of our consumer storage operations and (ii) the Cash Contribution. At the closing date of the Consumer Storage Transaction, the fair value of the Makespace Investment was approximately $27,500 . We account for the Makespace Investment as an equity method investment. The carrying value of the Makespace Investment at September 30, 2019 is $21,152 , and is presented as a component of Other within Other assets, net in our Condensed Consolidated Balance Sheet.

Significant Acquisition Costs

Significant Acquisition Costs	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Significant Acquisition Costs	Significant Acquisition Costs included in the accompanying Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2019 and 2018 are as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Cost of sales (excluding depreciation and amortization) $ 1,945 $ 2,892 $ 4,136 $ 5,015 Selling, general and administrative expenses 2,005 6,394 4,461 33,700 Total Significant Acquisition Costs $ 3,950 $ 9,286 $ 8,597 $ 38,715 Significant Acquisition Costs included in the accompanying Condensed Consolidated Statements of Operations by segment for the three and nine months ended September 30, 2019 and 2018 are as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 North American Records and Information Management Business $ 796 $ 950 $ 1,174 $ 4,551 North American Data Management Business 11 83 11 434 Western European Business 4 1,806 85 5,385 Other International Business 1,307 2,001 2,760 3,434 Global Data Center Business 70 232 337 11,572 Corporate and Other Business 1,762 4,214 4,230 13,339 Total Significant Acquisition Costs $ 3,950 $ 9,286 $ 8,597 $ 38,715

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions In connection with the Consumer Storage Transaction and the Makespace Investment (both as described more fully in Note 10), we also entered into a storage and service agreement with the Makespace JV to provide certain storage and related services to the Makespace JV (the "Makespace Agreement"). Revenues and expenses associated with the Makespace Agreement are presented as a component of our North American Records and Information Management Business segment. We recognized approximately $7,300 and $15,200 of revenue, respectively, for the three and nine months ended September 30, 2019, associated with the Makespace Agreement.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2019
Subsequent Events [Abstract]
Subsequent Events [Text Block]	In October 2019, we announced a global program designed to better position us for future growth and achievement of our strategic objectives (“Project Summit”). Project Summit will focus on simplifying our global structure by combining our core records and information management operations under one global leader and rebalancing our resources, streamlining managerial structures and leveraging our global and regional customer facing resources. The activities associated with Project Summit will begin in the fourth quarter of 2019 and are expected to be substantially complete by the end of 2021. We expect the total program benefits associated with Project Summit to be fully realized by the end of 2022. We estimate that the implementation of Project Summit will result in total restructuring charges (including operating and capital expenditures) of approximately $240,000 . We expect to incur restructuring charges associated with Project Summit of approximately $60,000 during the fourth quarter of 2019, substantially all of which will consist of employee severance costs and professional fees that will be settled in cash during the fourth quarter of 2019 and 2020. As a result of the realignment of our global managerial structure and changes to our internal financial reporting associated with Project Summit, during the fourth quarter of 2019, we reassessed the composition of our reportable operating segments. Subsequent to the implementation of the planned managerial structure changes associated with Project Summit, we expect to have three reportable operating segments: (i) Global Records and Information Management Business (which will consist of our existing North American Records and Information Management Business, North American Data Management Business, Western European Business and Other International Business operating segments); (ii) Global Data Center Business; and (iii) Corporate and Other Business (which includes our Adjacent Businesses operating segment). We also are in the process of reassessing the composition of our reporting units, at which level we assess goodwill for impairment.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Cash, Cash Equivalents and Restricted Cash	Cash, Cash Equivalents and Restricted Cash Cash and cash equivalents include cash on hand and cash invested in highly liquid short-term securities, which have remaining maturities at the date of purchase of less than 90 days. Cash and cash equivalents are carried at cost, which approximates fair value.
Goodwill and Other Intangible Assets and Liabilities	Goodwill and Other Intangible Assets and Liabilities Goodwill Since December 31, 2018, there have been no changes to our accounting polices related to the accounting for goodwill. As of September 30, 2019 and December 31, 2018 , no factors were identified that would alter our October 1, 2018 goodwill impairment analysis. Our reporting units as of December 31, 2018 are described in detail in Note 2.h. to Notes to Consolidated Financial Statements included in our Annual Report. On March 19, 2019, we divested the business included in our former Consumer Storage reporting unit, which had no goodwill associated with it at December 31, 2018 or at the date of the divestment. See Note 10 for additional information. The goodwill associated with acquisitions completed during the first nine months of 2019 (which are described in Note 4) has been incorporated into our reporting units as they existed as of December 31, 2018. Finite-lived Intangible Assets and Liabilities Finite-lived intangible assets and liabilities are primarily comprised of customer relationship intangible assets, customer inducements and data center intangible assets and liabilities (which include data center in-place lease intangible assets, data center tenant relationship intangible assets, data center above-market in-place lease intangible assets and data center below-market in-place lease intangible assets). Since December 31, 2018, there have been no changes to our accounting policies related to the accounting for any of our finite-lived intangible assets and liabilities as disclosed in Note 2.i. to Notes to Consolidated Financial Statements included in our Annual Report.
Revenues	Data Center Lessor Considerations Our data center business features storage rental provided to customers at contractually specified rates over a fixed contractual period. Prior to January 1, 2019, our data center revenue contracts were accounted for in accordance with Accounting Standards Codification (“ASC”) No. 840, Leases ("ASC 840"). On January 1, 2019, we adopted ASU 2016-02, as described in more detail in Note 2.d. Beginning on January 1, 2019, our data center revenue contracts are accounted for in accordance with ASU 2016-02. ASU 2016-02 provides a practical expedient which allows lessors to account for nonlease components (such as power and connectivity, in the case of our data center business) with the related lease component if both the timing and pattern of transfer are the same for nonlease components and the lease component, and the lease component would be classified as an operating lease. The single combined component is accounted for under ASU 2016-02 if the lease component is the predominant component and is accounted for under ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"), if the nonlease components are the predominant components. We have elected to take this practical expedient. Storage rental revenue associated with our data center business was approximately $62,000 and $182,300 for the three and nine months ended September 30, 2019, respectively, which includes approximately $12,000 and $31,000 of revenue associated with power and connectivity for the three and nine months ended September 30, 2019, respectively. The revenue related to the service component of our data center business remains unchanged from the adoption of ASU 2016-02 and is recognized in the period the related services are provided. Our accounting treatment for data center revenue was not significantly impacted by the adoption of ASU 2016-02.
Leases	Leases We lease facilities for certain warehouses, data centers and office space. We also have land leases, including those on which certain facilities are located. The majority of our leased facilities are classified as operating leases that, on average, have initial lease terms of five to 10 years , with one or more lease renewal options to extend the lease term. Our lease renewal option terms generally range from one to five years . The exercise of the lease renewal option is at our sole discretion and may contain fixed rent, fair market value based rent or Consumer Price Index rent escalation clauses. We include option periods in the lease term when our failure to renew the lease would result in an economic disincentive, thereby making it reasonably certain that we will renew the lease. We recognize straight line rental expense over the life of the lease and any fair market value or Consumer Price Index rent escalations are recognized as variable lease expense in the period in which the obligation is incurred. In addition, we lease certain vehicles and equipment. Vehicle and equipment leases have lease terms ranging from one to seven years . In February 2016, the Financial Accounting Standards Board ("FASB") issued ASU 2016-02, Leases (Topic 842), which requires lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by all leases, both operating and financing (formerly referred to as capital leases under ASC 840). ASU 2016-02 requires certain qualitative and quantitative disclosures designed to give financial statement users information on the amount, timing, and uncertainty of cash flows arising from leases. We adopted ASU 2016-02 on January 1, 2019 on a modified retrospective basis under which we recognized and measured leases existing at, or entered into after, the beginning of the period of adoption. Therefore, we applied ASC 840 to all earlier comparative periods (prior to the adoption of ASU 2016-02), including disclosures, and recognized the effects of applying ASU 2016-02 as a cumulative-effect adjustment to (Distributions in excess of earnings) Earnings in excess of distributions as of January 1, 2019, the effective date of the standard. As such, the comparative Condensed Consolidated Balance Sheet as of December 31, 2018 has not been restated to reflect the adoption of ASU 2016-02. Accordingly, the majority of the amount presented as deferred rent liabilities on our Consolidated Balance Sheet as of December 31, 2018 is now included in the calculation of operating lease right-of-use assets and any remaining amounts are now classified within other liability line items on our Condensed Consolidated Balance Sheet as of September 30, 2019. The transition guidance associated with ASU 2016-02 also permitted certain practical expedients. We elected the "package of 3" practical expedients permitted under the transition guidance which, among other things, allowed us to carryforward our historical lease classifications. We also adopted an accounting policy which provides that leases with an initial term of 12 months or less will not be included within the lease right-of-use assets and lease liabilities recognized on our Condensed Consolidated Balance Sheets after the adoption of ASU 2016-02. We will continue to recognize the lease payments for those leases with an initial term of 12 months or less in the Condensed Consolidated Statements of Operations on a straight-line basis over the lease term. The lease right-of-use assets and related lease liabilities are classified as either operating or financing. Lease right-of-use assets are calculated as the net present value of future payments plus any capitalized initial direct costs less any tenant improvements or lease incentives. Lease liabilities are calculated as the net present value of future payments. In calculating the present value of the lease payments, we will utilize the rate stated within the lease (in the limited circumstances when such rate is available) or, if no rate is explicitly stated, we have elected to utilize a rate that reflects our securitized incremental borrowing rate by geography for the lease term. In July 2018, the FASB issued ASU No. 2018-11, Leases - Targeted Improvements ("ASU 2018-11"). ASU 2018-11 provides a practical expedient which allows lessees to account for nonlease components (which include common area maintenance, taxes, and insurance) with the related lease component. Any variable nonlease components are not included within the lease right-of-use asset and lease liability on the Condensed Consolidated Balance Sheets, and instead, are reflected as an expense in the period incurred. We have elected to take this practical expedient upon adoption of ASU 2016-02. At January 1, 2019, we recognized the cumulative effect of initially applying ASU 2016-02 as an adjustment to the opening balance of (Distributions in excess of earnings) Earnings in excess of distributions, resulting in an increase of approximately $5,800 to stockholders' equity due to certain build to suit leases that were accounted for as financing leases under ASC 840, Leases , but are accounted for as operating leases under ASU 2016-02 at January 1, 2019.
Stock-Based Compensation	For our Employee Stock-Based Awards made on or after February 20, 2019, we have included the following retirement provision: Upon an employee’s retirement on or after attaining age 58, if the sum of (i) the award recipient’s age at retirement and (ii) the award recipient’s years of service with the company totals at least 70, the award recipient is entitled to continued vesting of any outstanding Employee Stock-Based Awards which include the 2019 Retirement Criteria subsequent to their retirement, provided that, for awards granted in the year of retirement, their retirement occurs on or after July 1 st (the “2019 Retirement Criteria”). Accordingly, (i) grants of Employee Stock-Based Awards to an employee who has met the 2019 Retirement Criteria on or before the date of grant, or will meet the Retirement Criteria before July 1 st of the year of the grant, will be expensed between the date of grant and July 1 st of the grant year and (ii) grants of Employee Stock-Based Awards to employees who will meet the 2019 Retirement Criteria during the award’s normal vesting period will be expensed between the date of grant and the date upon which the award recipient meets the 2019 Retirement Criteria. Stock options and RSUs granted to recipients who meet the 2019 Retirement Criteria will continue vesting on the original vesting schedule, and the stock options will remain exercisable up to three years after retirement, or the original expiration date of the stock options, if earlier. PUs granted to recipients who meet the 2019 Retirement Criteria will continue to vest and be delivered in accordance with the original vesting schedule of the applicable PU award and remain subject to the same performance conditions.
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	We provide for income taxes during interim periods based on our estimate of the effective tax rate for the year. Our estimate of the effective tax rates for the years ending December 31, 2019 and 2018 reflect the impact of the U.S. tax reform legislation, commonly referred to as the Tax Cuts and Jobs Act (the “Tax Reform Legislation”). See Note 7 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding the impact the Tax Reform Legislation had on us. 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	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.
Foreign Currency Transactions	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, include gains or losses related to (i) borrowings in certain foreign currencies under our Revolving Credit Facility (as defined and discussed more fully in Note 5), (ii) our Euro Notes (as defined in Note 5), (iii) certain foreign currency denominated intercompany obligations of our foreign subsidiaries to us and between our foreign subsidiaries, which are not considered permanently invested, and (iv) amounts that are paid or received on the net settlement amount from forward contracts (as more fully discussed in Note 3).
New Accounting Pronouncements	New Accounting Pronouncements In August 2018, the FASB issued ASU No. 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force) ("ASU 2018-15"). ASU 2018-15 aligns the accounting for costs incurred to implement a cloud computing arrangement that is a service arrangement with the guidance on capitalizing costs associated with developing or obtaining internal-use software. We adopted ASU 2018-15 on January 1, 2019. ASU 2018-15 did not have a material impact on our consolidated financial statements.
Correction in Presentation	Correction in Presentation

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
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 nine months ended September 30, 2019 are as follows: North American North American Western European Business Other International Business Global Data Center Business Corporate and Other Business Total Goodwill balance, net of accumulated amortization as of December 31, 2018 $ 2,251,795 $ 493,491 $ 381,806 $ 818,223 $ 425,956 $ 69,759 $ 4,441,030 Deductible goodwill acquired during the year 5,109 — 675 10,333 — — 16,117 Non-deductible goodwill acquired during the year — — 5,011 4,638 — 1,904 11,553 Fair value and other adjustments(1) 55 — (1,012 ) 1,321 258 (417 ) 205 Currency effects 5,501 1,495 (15,717 ) (32,461 ) (5,182 ) (546 ) (46,910 ) Goodwill balance, net accumulated amortization as of September 30, 2019 $ 2,262,460 $ 494,986 $ 370,763 $ 802,054 $ 421,032 $ 70,700 $ 4,421,995 Accumulated Goodwill Impairment Balance as of December 31, 2018 $ 85,909 $ — $ 46,500 $ — $ — $ 3,011 $ 135,420 Accumulated Goodwill Impairment Balance as of September 30, 2019 $ 85,909 $ — $ 46,500 $ — $ — $ 3,011 $ 135,420 _______________________________________________________________________________ (1) Total fair value and other adjustments primarily include $867 in net adjustments related to property, plant and equipment, customer relationships and data center lease-based intangible assets and deferred income taxes and other liabilities offset by $662 of net cash received related to certain acquisitions completed in 2018.
Schedule of components of amortizable intangible assets	The other finite-lived intangible assets as of September 30, 2019 and December 31, 2018 are as follows: September 30, 2019 December 31, 2018 Gross Carrying Accumulated Net Carrying Gross Carrying Accumulated Net Carrying Other finite-lived intangible assets (included in Other, a component of Other assets, net) $ 19,842 $ (17,385 ) $ 2,457 $ 20,310 $ (14,798 ) $ 5,512 The gross carrying amount and accumulated amortization of our finite-lived intangible assets as of September 30, 2019 and December 31, 2018 are as follows: September 30, 2019 December 31, 2018 Gross Carrying Accumulated Net Carrying Gross Carrying Accumulated Net Carrying Assets: Customer relationship intangible assets $ 1,747,535 $ (529,164 ) $ 1,218,371 $ 1,718,919 $ (455,705 ) $ 1,263,214 Customer inducements 53,097 (30,298 ) 22,799 56,478 (34,181 ) 22,297 Data center lease-based intangible assets(1) 264,382 (90,265 ) 174,117 271,818 (50,807 ) 221,011 Third-party commissions asset(2) 31,708 (3,001 ) 28,707 30,071 (1,089 ) 28,982 $ 2,096,722 $ (652,728 ) $ 1,443,994 $ 2,077,286 $ (541,782 ) $ 1,535,504 Liabilities: Data center below-market leases $ 12,720 $ (3,424 ) $ 9,296 $ 12,318 $ (1,642 ) $ 10,676 _______________________________________________________________________________ (1) Includes data center in-place lease intangible assets, data center tenant relationship intangible assets and data center above-market in-place lease intangible assets. (2) Third-party commissions asset is included in Other, a component of Other assets, net in the accompanying Condensed Consolidated Balance Sheets as of September 30, 2019 and December 31, 2018. The third-party commissions asset is primarily comprised of additional payments associated with the execution of future customer contracts through the one-year anniversary of the acquisition of IODC, as described in Note 4.
Schedule of amortization expenses	Amortization expense associated with finite-lived intangible assets, revenue reduction associated with the amortization of customer inducements and net revenue reduction associated with the amortization of data center above-market leases and data center below-market leases for the three and nine months ended September 30, 2019 and 2018 are as follows: Three Months Ended September 30, Nine Months Ended 2019 2018 2019 2018 Amortization expense included in depreciation and amortization associated with: Customer relationship and customer inducement intangible assets $ 29,064 $ 26,782 $ 85,228 $ 84,401 Data center in-place leases and tenant relationships 11,356 12,036 35,337 30,437 Third-party commissions asset and other finite-lived intangible assets 2,515 642 5,456 3,486 Revenue reduction associated with amortization of: Customer inducements $ 2,303 $ 3,229 $ 7,641 $ 8,782 Data center above-market leases and data center below-market leases 936 1,276 2,776 3,648
Schedule of amortization expense associated with commissions asset and Intake Costs	The costs of the initial intake of customer records into physical storage ("Intake Costs") and capitalized commissions asset (collectively, "Contract Fulfillment Costs") as of September 30, 2019 and December 31, 2018 are as follows: September 30, 2019 December 31, 2018 Description Location in Balance Sheet Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Intake Costs asset Other (within Other Assets, Net) $ 37,938 $ (20,974 ) $ 16,964 $ 39,748 $ (24,504 ) $ 15,244 Capitalized commissions asset Other (within Other Assets, Net) 56,585 (21,933 ) 34,652 58,424 (34,637 ) 23,787 Amortization expense associated with the Intake Costs asset and capitalized commissions asset for the three and nine months ended September 30, 2019 and 2018 are as follows: Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Intake Costs asset $ 2,250 $ 2,294 $ 7,764 $ 7,915 Capitalized commissions asset 4,224 3,053 14,105 10,433
Schedule of deferred revenue liabilities	Deferred revenue liabilities are reflected as follows in our Condensed Consolidated Balance Sheets: Description Location in Balance Sheet September 30, 2019 December 31, 2018 Deferred revenue - Current Deferred revenue $ 257,328 $ 264,823 Deferred revenue - Long-term Other Long-term Liabilities 26,572 26,401
Schedule of operating and financing lease right-of-use assets and lease liabilities	Operating and financing lease right-of-use assets and lease liabilities as of September 30, 2019 and January 1, 2019 (date of adoption of ASU 2016-02) are as follows: Description Location in Balance Sheet September 30, 2019 January 1, 2019 Assets: Operating lease right-of-use assets(1) Operating lease right-of-use assets $ 1,765,496 $ 1,825,721 Financing lease right-of-use assets, net of accumulated depreciation(2) Property, Plant and Equipment, Net 327,264 361,078 Total $ 2,092,760 $ 2,186,799 Liabilities: Current Operating lease liabilities Accrued expenses and other current liabilities $ 216,176 $ 209,911 Financing lease liabilities Current portion of long-term debt 47,112 50,437 Total current lease liabilities 263,288 260,348 Long-term Operating lease liabilities Long-term Operating Lease Liabilities, net of current portion 1,626,907 1,685,771 Financing lease liabilities Long-term Debt, net of current portion 318,986 350,263 Total long-term lease liabilities 1,945,893 2,036,034 Total $ 2,209,181 $ 2,296,382 ______________________________________________________________ (1) At September 30, 2019, these assets are comprised of approximately 98% real estate related assets (which include land, buildings and racking) and 2% non-real estate related assets (which include warehouse equipment, vehicles, furniture and fixtures and computer hardware and software). (2) At September 30, 2019, these assets are comprised of approximately 64% real estate related assets and 36% non-real estate related assets.
Schedule of lease, cost	Weighted average remaining lease terms and discount rates as of September 30, 2019 are as follows: Remaining Lease Term Operating leases 11.0 Years Financing leases 11.0 Years Discount Rate Operating leases 7.1 % Financing leases 5.6 % The components of the lease expense for the three and nine months ended September 30, 2019 are as follows: Description Location in Statement of Operations Three Months Ended Nine Months Ended September 30, 2019 Operating lease cost(1) Cost of sales and Selling, general and administrative $ 114,727 $ 343,282 Financing lease cost: Depreciation of financing lease right-of-use assets Depreciation and amortization $ 14,679 $ 45,950 Interest expense for financing lease liabilities Interest Expense, Net 4,905 15,972 Total financing lease cost $ 19,584 $ 61,922 ______________________________________________________________ (1) Of the $114,727 incurred for the three months ended September 30, 2019, $111,423 is included within Cost of sales and $3,304 is included within Selling, general and administrative expenses. Of the $343,282 incurred for the nine months ended September 30, 2019, $333,742 is included within Cost of sales and $9,540 is included within Selling, general and administrative expenses. Operating lease cost includes variable lease costs of $26,121 and $78,712 for the three and nine months ended September 30, 2019, respectively. Cash paid for amounts included in measurement of lease liabilities: Nine Months Ended Operating cash flows used in operating leases $ 252,277 Operating cash flows used in financing leases (interest) 15,972 Financing cash flows used in financing leases 44,808 Non-cash items: Operating lease modifications and reassessments $ 42,418 New operating leases (including acquisitions) 117,193 New financing leases, modifications and reassessments 20,699
Schedule of future minimum lease payments for capital leases	The estimated minimum future lease payments as of September 30, 2019, are as follows: Year Operating Leases(1) Sublease Income Financing Leases(1) 2019 (excluding the nine months ended September 30, 2019) $ 87,009 $ (1,646 ) $ 32,386 2020 323,448 (7,520 ) 57,887 2021 298,656 (5,185 ) 52,685 2022 274,021 (4,905 ) 46,358 2023 248,066 (4,795 ) 38,695 Thereafter 1,505,195 (10,673 ) 292,903 Total minimum lease payments 2,736,395 $ (34,724 ) 520,914 Less amounts representing interest or imputed interest (893,312 ) (154,816 ) Present value of lease obligations $ 1,843,083 $ 366,098 The estimated minimum future lease payments as of December 31, 2018 are as follows: Year Operating Leases(1) Sublease Income Financing Leases(1)(2) 2019 $ 323,454 $ (7,525 ) $ 80,513 2020 293,276 (7,200 ) 71,335 2021 267,379 (7,063 ) 61,269 2022 246,128 (6,694 ) 52,832 2023 221,808 (6,409 ) 44,722 Thereafter 1,287,807 (6,279 ) 377,750 Total minimum lease payments $ 2,639,852 $ (41,170 ) 688,421 Less amounts representing interest (241,248 ) Present value of lease obligations $ 447,173 _______________________________________________________________________________ (1) Estimated minimum future lease payments exclude variable common area maintenance charges, insurance and taxes. Differences in estimated lease payments between September 30, 2019 and December 31, 2018 are primarily related to adjustments to account for certain build to suit leases that were accounted for as financing obligations under ASC 840 but are accounted for as operating leases under ASU 2016-02 and foreign currency exchange rate impacts. (2) Includes capital lease and financing obligations associated with build to suit lease transactions at December 31, 2018.
Schedule of finance lease, liability, maturity	The estimated minimum future lease payments as of September 30, 2019, are as follows: Year Operating Leases(1) Sublease Income Financing Leases(1) 2019 (excluding the nine months ended September 30, 2019) $ 87,009 $ (1,646 ) $ 32,386 2020 323,448 (7,520 ) 57,887 2021 298,656 (5,185 ) 52,685 2022 274,021 (4,905 ) 46,358 2023 248,066 (4,795 ) 38,695 Thereafter 1,505,195 (10,673 ) 292,903 Total minimum lease payments 2,736,395 $ (34,724 ) 520,914 Less amounts representing interest or imputed interest (893,312 ) (154,816 ) Present value of lease obligations $ 1,843,083 $ 366,098 The estimated minimum future lease payments as of December 31, 2018 are as follows: Year Operating Leases(1) Sublease Income Financing Leases(1)(2) 2019 $ 323,454 $ (7,525 ) $ 80,513 2020 293,276 (7,200 ) 71,335 2021 267,379 (7,063 ) 61,269 2022 246,128 (6,694 ) 52,832 2023 221,808 (6,409 ) 44,722 Thereafter 1,287,807 (6,279 ) 377,750 Total minimum lease payments $ 2,639,852 $ (41,170 ) 688,421 Less amounts representing interest (241,248 ) Present value of lease obligations $ 447,173 _______________________________________________________________________________ (1) Estimated minimum future lease payments exclude variable common area maintenance charges, insurance and taxes. Differences in estimated lease payments between September 30, 2019 and December 31, 2018 are primarily related to adjustments to account for certain build to suit leases that were accounted for as financing obligations under ASC 840 but are accounted for as operating leases under ASU 2016-02 and foreign currency exchange rate impacts. (2) Includes capital lease and financing obligations associated with build to suit lease transactions at December 31, 2018.
Schedule of lessee, operating lease, liability, maturity	The estimated minimum future lease payments as of September 30, 2019, are as follows: Year Operating Leases(1) Sublease Income Financing Leases(1) 2019 (excluding the nine months ended September 30, 2019) $ 87,009 $ (1,646 ) $ 32,386 2020 323,448 (7,520 ) 57,887 2021 298,656 (5,185 ) 52,685 2022 274,021 (4,905 ) 46,358 2023 248,066 (4,795 ) 38,695 Thereafter 1,505,195 (10,673 ) 292,903 Total minimum lease payments 2,736,395 $ (34,724 ) 520,914 Less amounts representing interest or imputed interest (893,312 ) (154,816 ) Present value of lease obligations $ 1,843,083 $ 366,098 The estimated minimum future lease payments as of December 31, 2018 are as follows: Year Operating Leases(1) Sublease Income Financing Leases(1)(2) 2019 $ 323,454 $ (7,525 ) $ 80,513 2020 293,276 (7,200 ) 71,335 2021 267,379 (7,063 ) 61,269 2022 246,128 (6,694 ) 52,832 2023 221,808 (6,409 ) 44,722 Thereafter 1,287,807 (6,279 ) 377,750 Total minimum lease payments $ 2,639,852 $ (41,170 ) 688,421 Less amounts representing interest (241,248 ) Present value of lease obligations $ 447,173 _______________________________________________________________________________ (1) Estimated minimum future lease payments exclude variable common area maintenance charges, insurance and taxes. Differences in estimated lease payments between September 30, 2019 and December 31, 2018 are primarily related to adjustments to account for certain build to suit leases that were accounted for as financing obligations under ASC 840 but are accounted for as operating leases under ASU 2016-02 and foreign currency exchange rate impacts. (2) Includes capital lease and financing obligations associated with build to suit lease transactions at December 31, 2018.
Schedule of lessor, operating lease, maturity	The future minimum lease payments we expect to receive under non-cancellable data center operating leases, for which we are the lessor, excluding month to month leases, for the next five years are as follows: Year Future minimum lease payments 2019 (excluding the nine months ended September 30, 2019) $ 58,381 2020 177,528 2021 118,980 2022 83,677 2023 67,569
Schedule of stock option activity	A summary of stock option activity for the nine months ended September 30, 2019 is as follows: Stock Options Outstanding at December 31, 2018 4,271,834 Granted 920,706 Exercised (236,704 ) Forfeited (13,542 ) Expired (16,715 ) Outstanding at September 30, 2019 4,925,579 Options exercisable at September 30, 2019 3,128,621 Options expected to vest 1,716,446
Schedule of restricted stock and RSU activity	The fair value of RSUs vested during the three and nine months ended September 30, 2019 and 2018 is as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Fair value of RSUs vested $ 3,092 $ 3,189 $ 20,802 $ 19,195 A summary of RSU activity for the nine months ended September 30, 2019 is as follows: RSUs Non-vested at December 31, 2018 1,196,566 Granted 752,555 Vested (611,828 ) Forfeited (81,437 ) Non-vested at September 30, 2019 1,255,856
Schedule of performance units	The fair value of earned PUs that vested during the three and nine months ended September 30, 2019 and 2018 is as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Fair value of earned PUs that vested $ 1,176 $ 84 $ 7,679 $ 3,117
Schedule of Performance Unit (PU) activity	A summary of PU activity for the nine months ended September 30, 2019 is as follows: Original PU Adjustment(1) Total Non-vested at December 31, 2018 967,049 (299,948 ) 667,101 Granted 380,856 — 380,856 Vested (202,141 ) — (202,141 ) Forfeited/Performance or Market Conditions Not Achieved (13,898 ) (14,850 ) (28,748 ) Non-vested at September 30, 2019 1,131,866 (314,798 ) 817,068 _______________________________________________________________________________ (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.
Schedule of 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 and nine months ended September 30, 2019 and 2018 are as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Income (loss) from continuing operations $ 108,284 $ 77,349 $ 231,107 $ 209,001 Less: Net income (loss) attributable to noncontrolling interests 609 (125 ) 1,534 485 Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation) $ 107,675 $ 77,474 $ 229,573 $ 208,516 (Loss) income from discontinued operations, net of tax $ — $ (11,605 ) $ 104 $ (12,427 ) Net income (loss) attributable to Iron Mountain Incorporated $ 107,675 $ 65,869 $ 229,677 $ 196,089 Weighted-average shares—basic 287,152,000 286,159,000 286,869,000 285,801,000 Effect of dilutive potential stock options 93,752 264,451 157,928 250,574 Effect of dilutive potential RSUs and PUs 445,081 558,891 528,387 463,583 Weighted-average shares—diluted 287,690,833 286,982,342 287,555,315 286,515,157 Earnings (losses) per share—basic: Income (loss) from continuing operations $ 0.37 $ 0.27 $ 0.80 $ 0.73 (Loss) income from discontinued operations, net of tax — (0.04 ) — (0.04 ) Net income (loss) attributable to Iron Mountain Incorporated(1) $ 0.37 $ 0.23 $ 0.80 $ 0.69 Earnings (losses) per share—diluted: Income (loss) from continuing operations $ 0.37 $ 0.27 $ 0.80 $ 0.73 (Loss) income from discontinued operations, net of tax — (0.04 ) — (0.04 ) Net income (loss) attributable to Iron Mountain Incorporated(1) $ 0.37 $ 0.23 $ 0.80 $ 0.68 Antidilutive stock options, RSUs and PUs, excluded from the calculation 4,782,661 3,253,975 4,590,645 3,256,206 _______________________________________________________________________________ (1) Columns may not foot due to rounding.
Schedule of effective income tax rate reconciliation	Our effective tax rates for the three and nine months ended September 30, 2019 and 2018 are as follows: Three Months Ended September 30, Nine Months Ended 2019(1) 2018(1) 2019(1) 2018(2) Effective Tax Rate 16.8 % 15.3 % 15.7 % 16.0 % _______________________________________________________________________________ (1) The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three and nine months ended September 30, 2019 and for the three months ended September 30, 2018 were the benefit derived from the dividends paid deduction and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates. (2) The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the nine months ended September 30, 2018 were the benefit derived from the dividends paid deduction, a discrete tax benefit of approximately $14,000 associated with the resolution of a tax matter and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates.
Schedule of 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 September 30, 2019 and December 31, 2018 , respectively, are as follows: Fair Value Measurements at Description Total Carrying Quoted prices Significant other Significant Money Market Funds(1) $ 30,123 $ — $ 30,123 $ — Trading Securities 9,996 9,540 (2) 456 (3) — Derivative Assets(4) 1,972 — 1,972 — Derivative Liabilities(4) 12,046 — 12,046 — Fair Value Measurements at Description Total Carrying Value at December 31, 2018 Quoted prices in active markets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Time Deposits(1) $ 956 $ — $ 956 $ — Trading Securities 10,753 10,248 (2) 505 (3) — Derivative Assets(4) 93 — 93 — Derivative Liabilities(4) 973 — 973 — _______________________________________________________________________________ (1) Money market funds and time deposits 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) Certain trading securities are measured based on inputs that are observable other than quoted market prices. (4)
Schedule of changes in accumulated other comprehensive items, net	The changes in accumulated other comprehensive items, net for the three and nine months ended September 30, 2019, respectively, are as follows: Three Months Ended September 30, 2019 Nine Months Ended September 30, 2019 Foreign Change in Fair Value of Derivative Instruments Total Foreign Change in Fair Value of Derivative Instruments Total Beginning of Period $ (253,243 ) $ (8,578 ) $ (261,821 ) $ (264,691 ) $ (973 ) $ (265,664 ) Other comprehensive (loss) income: Foreign currency translation adjustment (82,886 ) — (82,886 ) (71,438 ) — (71,438 ) Change in fair value of derivative instruments — (1,496 ) (1,496 ) — (9,101 ) (9,101 ) Total other comprehensive (loss) income (82,886 ) (1,496 ) (84,382 ) (71,438 ) (9,101 ) (80,539 ) End of Period $ (336,129 ) $ (10,074 ) $ (346,203 ) $ (336,129 ) $ (10,074 ) $ (346,203 ) The changes in accumulated other comprehensive items, net for the three and nine months ended September 30, 2018, respectively, are as follows: Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 Foreign Change in Fair Value of Derivative Instruments Total Foreign Change in Fair Value of Derivative Instruments Total Beginning of Period $ (209,653 ) $ 2,203 $ (207,450 ) $ (103,989 ) $ — $ (103,989 ) Other comprehensive (loss) income: Foreign currency translation adjustment (22,790 ) — (22,790 ) (128,454 ) — (128,454 ) Change in fair value of derivative instruments — 1,980 1,980 — 4,183 4,183 Total other comprehensive (loss) income (22,790 ) 1,980 (20,810 ) (128,454 ) 4,183 (124,271 ) End of Period $ (232,443 ) $ 4,183 $ (228,260 ) $ (232,443 ) $ 4,183 $ (228,260 )
Schedule of other expense (income), net	Other (income) expense, net for the three and nine months ended September 30, 2019 and 2018 consists of the following: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Foreign currency transaction (gains) losses, net $ (18,251 ) $ 664 $ (19,885 ) $ 3,825 Other, net 4,836 (339 ) 6,488 (2,405 ) Other (Income) Expense, Net $ (13,415 ) $ 325 $ (13,397 ) $ 1,420
Schedule of immaterial restatement	The following table sets forth the effect of the immaterial restatement to certain line items of our Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2018: Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 Selling, general and administrative $ 1,459 $ 10,798 Total Operating Expenses $ 1,459 $ 10,798 Operating Income (Loss) $ (1,459 ) $ (10,798 ) Interest Expense, Net $ 97 $ 262 Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes $ (1,556 ) $ (11,060 ) Provision (Benefit) for Income Taxes $ (277 ) $ (1,916 ) Income (Loss) from Continuing Operations $ (1,279 ) $ (9,144 ) Net Income (Loss) $ (1,279 ) $ (9,144 ) Net Income (Loss) Attributable to Iron Mountain Incorporated $ (1,279 ) $ (9,144 ) Earnings (Losses) per Share - Basic: Income (Loss) from Continuing Operations $ (0.01 ) $ (0.03 ) Net Income (Loss) Attributable to Iron Mountain Incorporated $ — $ (0.03 ) Earnings (Losses) per Share - Diluted: Income (Loss) from Continuing Operations $ — $ (0.03 ) Net Income (Loss) Attributable to Iron Mountain Incorporated $ — $ (0.04 ) The following table sets forth the effect of the immaterial restatement to certain line items of our Consolidated Balance Sheet as of December 31, 2018: December 31, 2018 Total Other Assets, Net $ 4,971 Total Assets $ 4,971 Accrued expenses and other current liabilities $ 28,097 Total Current Liabilities $ 28,097 (Distribution in excess of earnings) Earnings in excess of distributions $ (23,126 ) Total Iron Mountain Incorporated Stockholders' Equity $ (23,126 )

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	A summary of the cumulative consideration paid and the preliminary allocation of the purchase price paid for all of our 2019 acquisitions through September 30, 2019 is as follows: Nine Months Ended Cash Paid (gross of cash acquired)(1) $ 51,456 Purchase Price Holdbacks and Other 4,135 Total Consideration 55,591 Fair Value of Identifiable Assets Acquired: Cash 2,224 Accounts Receivable, Prepaid Expenses and Other Assets 3,228 Property, Plant and Equipment(2) 5,320 Customer Relationship Intangible Assets 21,584 Operating Lease Right-of-Use Assets 16,956 Accounts Payable, Accrued Expenses and Other Liabilities (2,716 ) Operating Lease Liabilities (16,956 ) Deferred Income Taxes (1,719 ) Total Fair Value of Identifiable Net Assets Acquired 27,921 Goodwill Initially Recorded(3) $ 27,670 _______________________________________________________________________________ (1) Included in cash paid for acquisitions in the Condensed Consolidated Statement of Cash Flows for the nine months ended September 30, 2019 is net cash acquired of $2,224 and contingent and other payments, net of $7,267 related to acquisitions made in previous years. (2) Consists primarily of leasehold improvements, 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 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.
Schedule of Business Acquisition, Pro Forma Information	The unaudited consolidated pro forma financial information (the "Pro Forma Financial Information") below summarizes the combined results of us and IODC on a pro forma basis as if the IODC Transaction had occurred on January 1, 2017. 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, 2017. The Pro Forma Financial Information, for the period presented, includes purchase accounting adjustments (including amortization expenses from acquired intangible assets and depreciation of acquired property, plant and equipment). We and IODC collectively incurred $28,064 of operating expenditures to complete the IODC Transaction (including advisory and professional fees). 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, 2017. Three Months Ended September 30, 2018 Nine Months Ended Total Revenues $ 1,060,991 $ 3,167,762 Income from Continuing Operations $ 77,349 $ 218,953 Per Share Income from Continuing Operations - Basic $ 0.27 $ 0.76 Per Share Income from Continuing Operations - Diluted $ 0.27 $ 0.76

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Schedule of Carrying Amount and Fair Value of Long-Term Debt Instruments	Long-term debt is as follows: September 30, 2019 December 31, 2018 Debt (inclusive of discount) Unamortized Deferred Financing Costs Carrying Amount Fair Debt (inclusive of discount) Unamortized Deferred Financing Costs Carrying Amount Fair Revolving Credit Facility(1) $ 354,879 $ (11,763 ) $ 343,116 $ 354,879 $ 793,832 $ (14,117 ) $ 779,715 $ 793,832 Term Loan A(1) 231,250 — 231,250 231,250 240,625 — 240,625 240,625 Term Loan B(2) 688,089 (7,806 ) 680,283 688,638 693,169 (8,742 ) 684,427 660,013 Australian Dollar Term Loan (the "AUD Term Loan")(3) 219,871 (2,389 ) 217,482 221,165 233,955 (3,084 ) 230,871 235,645 UK Bilateral Revolving Credit Facility (the "UK Bilateral Facility")(4) 172,180 (1,845 ) 170,335 172,180 178,299 (2,357 ) 175,942 178,299 4 3 / 8 % Senior Notes due 2021 (the "4 3 / 8 % Notes")(5) 500,000 (2,866 ) 497,134 503,750 500,000 (4,155 ) 495,845 488,750 6% Senior Notes due 2023 (the "6% Notes due 2023")(5) 600,000 (4,302 ) 595,698 615,000 600,000 (5,126 ) 594,874 606,000 5 3 / 8 % CAD Senior Notes due 2023 (the "CAD Notes") 188,811 (2,173 ) 186,638 194,475 183,403 (2,506 ) 180,897 186,154 5 3 / 4 % Senior Subordinated Notes due 2024 (the "5 3 / 4 % Notes")(5) 1,000,000 (6,752 ) 993,248 1,010,000 1,000,000 (7,782 ) 992,218 940,000 3% Euro Senior Notes due 2025 (the "Euro Notes")(5) 327,508 (3,622 ) 323,886 334,877 343,347 (4,098 ) 339,249 321,029 3 7 / 8 % GBP Senior Notes due 2025 (the "GBP Notes") 491,943 (5,651 ) 486,292 493,173 509,425 (6,573 ) 502,852 453,811 5 3 / 8 % Senior Notes due 2026 (the "5 3 / 8 % Notes") 250,000 (2,863 ) 247,137 257,500 250,000 (3,185 ) 246,815 224,375 4 7 / 8 % Senior Notes due 2027 (the "4 7 / 8 % Notes due 2027")(5) 1,000,000 (11,375 ) 988,625 1,022,500 1,000,000 (12,442 ) 987,558 855,000 5 1 / 4 % Senior Notes due 2028 (the "5 1 / 4 % Notes")(5) 825,000 (10,037 ) 814,963 852,844 825,000 (10,923 ) 814,077 713,625 4 7 / 8 % Senior Notes due 2029 (the "4 7 / 8 % Notes due 2029")(5) 1,000,000 (14,451 ) 985,549 1,015,000 — — — — Real Estate Mortgages, Financing Lease Liabilities and Other 533,549 (444 ) 533,105 533,549 606,702 (171 ) 606,531 606,702 Accounts Receivable Securitization Program(6) 271,562 (115 ) 271,447 271,562 221,673 (218 ) 221,455 221,673 Mortgage Securitization Program(7) 50,000 (1,019 ) 48,981 50,000 50,000 (1,128 ) 48,872 50,000 Total Long-term Debt 8,704,642 (89,473 ) 8,615,169 8,229,430 (86,607 ) 8,142,823 Less Current Portion (394,822 ) — (394,822 ) (126,406 ) — (126,406 ) Long-term Debt, Net of Current Portion $ 8,309,820 $ (89,473 ) $ 8,220,347 $ 8,103,024 $ (86,607 ) $ 8,016,417 ______________________________________________________________ (1) Collectively, the credit agreement ("Credit Agreement"). The Credit Agreement consists of a revolving credit facility (the "Revolving Credit Facility") and a term loan (the "Term Loan A"). The Credit Agreement is scheduled to mature on June 3, 2023. Of the $354,879 of outstanding borrowings under the Revolving Credit Facility as of September 30, 2019, 221,900 was denominated in United States dollars, 72,000 was denominated in Canadian dollars and 72,000 was denominated in Euros. In addition, we also had various outstanding letters of credit totaling $16,843 . The remaining amount available for borrowing under the Revolving Credit Facility as of September 30, 2019 was $1,378,278 (which amount represents the maximum availability as of such date). The average interest rate in effect under the Credit Agreement was 3.5% as of September 30, 2019 . The average interest rate in effect under the Revolving Credit Facility as of September 30, 2019 was 3.3% and the interest rate in effect under Term Loan A as of September 30, 2019 was 3.8% . (2) In connection with the 2018 First Amendment (as defined in Note 5 to Notes to Consolidated Financial Statements included in our Annual Report), Iron Mountain Information Management, LLC ("IMIM") entered into an incremental term loan activation notice (the "Activation Notice") with certain lenders pursuant to which the lenders party to the Activation Notice agreed to provide commitments to fund an incremental term loan B in the amount of $700,000 (the "Term Loan B"). On March 26, 2018, IMIM borrowed the full amount of the Term Loan B. The Term Loan B is scheduled to mature on January 2, 2026. The interest rate in effect as of September 30, 2019 was 3.8% . The amount of debt for the Term Loan B reflects an unamortized original issue discount of $1,411 and $1,581 as of September 30, 2019 and December 31, 2018, respectively. (3) The interest rate in effect as of September 30, 2019 was 4.9% . We had 327,500 Australian dollars outstanding on the AUD Term Loan as of September 30, 2019. The amount of debt for the AUD Term Loan reflects an unamortized original issue discount of $1,294 and $1,690 as of September 30, 2019 and December 31, 2018, respectively. (4) The interest rate in effect as of September 30, 2019 was 3.0% . (5) Collectively, the "Parent Notes". (6) The interest rate in effect as of September 30, 2019 was 3.1% . The Accounts Receivable Securitization Program terminates on July 30, 2020, at which point all obligations under the program become due. The full amount outstanding under the Accounts Receivable Securitization Program is classified within the current portion of long-term debt in our Condensed Consolidated Balance Sheet as of September 30, 2019. (7) The interest rate in effect as of September 30, 2019 was 3.5% .
Schedule of Net Cash Position in Cash Pool Agreements	The approximate amount of the net cash position for our QRS Cash Pool and the TRS Cash Pool and the approximate amount of the gross position and outstanding debit balances for each of these pools as of September 30, 2019 and December 31, 2018 are as follows: September 30, 2019 December 31, 2018 Gross Cash Position Outstanding Debit Balances Net Cash Position Gross Cash Position Outstanding Debit Balances Net Cash Position QRS Cash Pool $ 358,200 $ (355,800 ) $ 2,400 $ 300,800 $ (298,800 ) $ 2,000 TRS Cash Pool 302,200 (296,300 ) 5,900 281,500 (279,300 ) 2,200
Schedule of Leverage and Fixed Charge Ratios	Our leverage and fixed charge coverage ratios under the Credit Agreement as of September 30, 2019 and December 31, 2018, as well as our leverage ratio under our indentures as of September 30, 2019 and December 31, 2018 are as follows: September 30, 2019 December 31, 2018 Maximum/Minimum Allowable Net total lease adjusted leverage ratio 5.8 5.6 Maximum allowable of 6.5 Net secured debt lease adjusted leverage ratio 2.3 2.6 Maximum allowable of 4.0 Bond leverage ratio (not lease adjusted) 6.1 5.8 Maximum allowable of 6.5-7.0(1) Fixed charge coverage ratio 2.1 2.2 Minimum allowable of 1.5 ______________________________________________________________ (1) The maximum allowable leverage ratio under our indentures for the 4 7 / 8 % Notes due 2029, the 4 7 / 8 % Notes due 2027, the GBP Notes and the 5 1 / 4 % Notes is 7.0 , while the maximum allowable leverage ratio under the indentures pertaining to our remaining senior and senior subordinated notes is 6.5 . In certain instances as provided in our indentures, we have the ability to incur additional indebtedness that would result in our bond leverage ratio exceeding the maximum allowable ratio under our indentures and still remain in compliance with the covenant.

Selected Consolidated Financi_2

Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors (Tables)	9 Months Ended
	Sep. 30, 2019
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	CONDENSED CONSOLIDATED BALANCE SHEETS September 30, 2019 Parent Guarantors Non- Eliminations Consolidated Assets Current Assets: Cash and cash equivalents(1) $ 10 $ 157,771 $ 162,024 $ (133,027 ) $ 186,778 Accounts receivable — 58,400 763,526 — 821,926 Intercompany receivable — 456,222 — (456,222 ) — Prepaid expenses and other — 96,737 98,481 (29 ) 195,189 Total Current Assets 10 769,130 1,024,031 (589,278 ) 1,203,893 Property, Plant and Equipment, Net 122 3,049,090 1,507,507 — 4,556,719 Other Assets, Net: Long-term notes receivable from affiliates and intercompany receivable 5,180,133 — — (5,180,133 ) — Investment in subsidiaries 1,940,454 1,051,609 — (2,992,063 ) — Goodwill — 2,853,466 1,568,529 — 4,421,995 Operating lease right-of-use assets — 939,631 825,865 — 1,765,496 Other 1,972 945,025 682,067 — 1,629,064 Total Other Assets, Net 7,122,559 5,789,731 3,076,461 (8,172,196 ) 7,816,555 Total Assets $ 7,122,691 $ 9,607,951 $ 5,607,999 $ (8,761,474 ) $ 13,577,167 Liabilities and Equity Intercompany Payable $ 167,220 $ — $ 289,002 $ (456,222 ) $ — Debit Balances Under Cash Pools — — 133,027 (133,027 ) — Current Portion of Long-Term Debt — 54,028 340,823 (29 ) 394,822 Total Other Current Liabilities (includes current portion of operating lease liabilities) 233,492 685,486 516,311 — 1,435,289 Long-Term Debt, Net of Current Portion 5,199,103 1,457,499 1,563,745 — 8,220,347 Long-Term Operating Lease Liabilities, Net of Current Portion — 871,377 755,530 — 1,626,907 Long-Term Notes Payable to Affiliates and Intercompany Payable — 5,180,133 — (5,180,133 ) — Other Long-term Liabilities 12,046 52,842 254,966 — 319,854 Commitments and Contingencies (See Note 8) Redeemable Noncontrolling Interests — — 68,099 — 68,099 Total Iron Mountain Incorporated Stockholders' Equity 1,510,830 1,306,586 1,685,477 (2,992,063 ) 1,510,830 Noncontrolling Interests — — 1,019 — 1,019 Total Equity 1,510,830 1,306,586 1,686,496 (2,992,063 ) 1,511,849 Total Liabilities and Equity $ 7,122,691 $ 9,607,951 $ 5,607,999 $ (8,761,474 ) $ 13,577,167 ______________________________________________________________ (1) Included within Cash and Cash Equivalents at September 30, 2019 is approximately $141,300 and $0 of cash on deposit associated with our Cash Pools for the Guarantors and Non-Guarantors, respectively. CONDENSED CONSOLIDATED BALANCE SHEETS (Continued) December 31, 2018 Parent Guarantors Non- Eliminations Consolidated Assets Current Assets: Cash and cash equivalents(1) $ 132 $ 63,407 $ 169,318 $ (67,372 ) $ 165,485 Accounts receivable — 47,472 799,417 — 846,889 Intercompany receivable — 821,324 — (821,324 ) — Prepaid expenses and other 93 109,480 86,196 (29 ) 195,740 Total Current Assets 225 1,041,683 1,054,931 (888,725 ) 1,208,114 Property, Plant and Equipment, Net 190 3,010,767 1,478,600 — 4,489,557 Other Assets, Net: Long-term notes receivable from affiliates and intercompany receivable 4,954,686 — — (4,954,686 ) — Investment in subsidiaries 1,862,048 983,018 — (2,845,066 ) — Goodwill — 2,861,381 1,579,649 — 4,441,030 Other — 982,932 735,585 — 1,718,517 Total Other Assets, Net 6,816,734 4,827,331 2,315,234 (7,799,752 ) 6,159,547 Total Assets $ 6,817,149 $ 8,879,781 $ 4,848,765 $ (8,688,477 ) $ 11,857,218 Liabilities and Equity Intercompany Payable $ 462,927 $ — $ 358,397 $ (821,324 ) $ — Debit Balances Under Cash Pools — 10,612 56,760 (67,372 ) — Current Portion of Long-Term Debt — 63,859 62,576 (29 ) 126,406 Total Other Current Liabilities 268,373 618,513 477,483 — 1,364,369 Long-Term Debt, Net of Current Portion 4,223,822 1,878,079 1,914,516 — 8,016,417 Long-Term Notes Payable to Affiliates and Intercompany Payable — 4,954,686 — (4,954,686 ) — Other Long-term Liabilities 973 116,895 299,163 — 417,031 Commitments and Contingencies (See Note 8) Redeemable Noncontrolling Interests — — 70,532 — 70,532 Total Iron Mountain Incorporated Stockholders' Equity 1,861,054 1,237,137 1,607,929 (2,845,066 ) 1,861,054 Noncontrolling Interests — — 1,409 — 1,409 Total Equity 1,861,054 1,237,137 1,609,338 (2,845,066 ) 1,862,463 Total Liabilities and Equity $ 6,817,149 $ 8,879,781 $ 4,848,765 $ (8,688,477 ) $ 11,857,218 ______________________________________________________________ (1) Included within Cash and Cash Equivalents at December 31, 2018 is approximately $58,900 and $12,700 of cash on deposit associated with our Cash Pools for the Guarantors and Non-Guarantors, respectively.
Schedule of selected consolidated Income statements of Parent, Guarantors, Canada Company and Non-Guarantors	CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) Three Months Ended September 30, 2019 Parent Guarantors Non- Eliminations Consolidated Revenues: Storage rental $ — $ 416,967 $ 256,351 $ — $ 673,318 Service — 245,584 143,322 — 388,906 Intercompany revenues — 1,173 5,631 (6,804 ) — Total Revenues — 663,724 405,304 (6,804 ) 1,062,224 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 262,183 189,134 — 451,317 Intercompany — 5,631 1,173 (6,804 ) — Selling, general and administrative 161 162,052 76,943 — 239,156 Depreciation and amortization 23 100,023 57,515 — 157,561 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (8,922 ) (362 ) — (9,284 ) Total Operating Expenses 184 520,967 324,403 (6,804 ) 838,750 Operating (Loss) Income (184 ) 142,757 80,901 — 223,474 Interest Expense (Income), Net(1) 52,166 6,074 48,437 — 106,677 Other (Income) Expense, Net (596 ) 11,577 (24,396 ) — (13,415 ) (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (51,754 ) 125,106 56,860 — 130,212 Provision (Benefit) for Income Taxes — 12,814 9,114 — 21,928 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (159,429 ) (46,345 ) — 205,774 — Income (Loss) from Continuing Operations 107,675 158,637 47,746 (205,774 ) 108,284 Income (Loss) from Discontinued Operations, Net of Tax — — — — — Net Income (Loss) 107,675 158,637 47,746 (205,774 ) 108,284 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 609 — 609 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 107,675 $ 158,637 $ 47,137 $ (205,774 ) $ 107,675 Net Income (Loss) $ 107,675 $ 158,637 $ 47,746 $ (205,774 ) $ 108,284 Other Comprehensive (Loss) Income: Foreign Currency Translation Adjustments 13,101 — (96,696 ) — (83,595 ) Change in Fair Value of Derivative Instruments (1,496 ) — — — (1,496 ) Equity in Other Comprehensive (Loss) Income of Subsidiaries (95,987 ) (81,135 ) — 177,122 — Total Other Comprehensive (Loss) Income (84,382 ) (81,135 ) (96,696 ) 177,122 (85,091 ) Comprehensive Income (Loss) 23,293 77,502 (48,950 ) (28,652 ) 23,193 Comprehensive (Loss) Income Attributable to Noncontrolling Interests — — (100 ) — (100 ) Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 23,293 $ 77,502 $ (48,850 ) $ (28,652 ) $ 23,293 __________________________________________________________ (1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements. CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued) Three Months Ended September 30, 2018 Parent Guarantors Non- Eliminations Consolidated Revenues: Storage rental $ — $ 404,397 $ 252,576 $ — $ 656,973 Service — 250,471 153,547 — 404,018 Intercompany revenues — 1,192 4,330 (5,522 ) — Total Revenues — 656,060 410,453 (5,522 ) 1,060,991 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 254,068 193,950 — 448,018 Intercompany cost of sales — 4,330 1,192 (5,522 ) — Selling, general and administrative (427 ) 177,777 82,579 — 259,929 Depreciation and amortization 31 100,210 57,556 — 157,797 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (1,669 ) 1,281 — (388 ) Total Operating Expenses (396 ) 534,716 336,558 (5,522 ) 865,356 Operating Income (Loss) 396 121,344 73,895 — 195,635 Interest Expense (Income), Net(1) 49,964 3,151 50,823 — 103,938 Other Expense (Income), Net 439 4,155 (4,269 ) — 325 (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (50,007 ) 114,038 27,341 — 91,372 Provision (Benefit) for Income Taxes — 9,012 5,011 — 14,023 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (115,876 ) (25,414 ) — 141,290 — Income (Loss) from Continuing Operations 65,869 130,440 22,330 (141,290 ) 77,349 (Loss) Income from Discontinued Operations — (11,588 ) (17 ) — (11,605 ) Net Income (Loss) 65,869 118,852 22,313 (141,290 ) 65,744 Less: Net (Loss) Income Attributable to Noncontrolling Interests — — (125 ) — (125 ) Net Income (Loss) Attributable to Iron Mountain Incorporated $ 65,869 $ 118,852 $ 22,438 $ (141,290 ) $ 65,869 Net Income (Loss) $ 65,869 $ 118,852 $ 22,313 $ (141,290 ) $ 65,744 Other Comprehensive (Loss) Income: Foreign Currency Translation Adjustment 2,139 — (26,908 ) — (24,769 ) Change in Fair Value of Derivative Instruments 1,980 — — — 1,980 Equity in Other Comprehensive (Loss) Income of Subsidiaries (24,929 ) (14,443 ) — 39,372 — Total Other Comprehensive (Loss) Income (20,810 ) (14,443 ) (26,908 ) 39,372 (22,789 ) Comprehensive Income (Loss) 45,059 104,409 (4,595 ) (101,918 ) 42,955 Comprehensive (Loss) Income Attributable to Noncontrolling Interests — — (2,104 ) — (2,104 ) Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 45,059 $ 104,409 $ (2,491 ) $ (101,918 ) $ 45,059 _____________________________________________________________ (1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements. CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued) Nine Months Ended September 30, 2019 Parent Guarantors Non- Eliminations Consolidated Revenues: Storage rental $ — $ 1,235,353 $ 770,227 $ — $ 2,005,580 Service — 733,247 444,167 — 1,177,414 Intercompany revenues — 3,485 15,094 (18,579 ) — Total Revenues — 1,972,085 1,229,488 (18,579 ) 3,182,994 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 788,864 589,099 — 1,377,963 Intercompany cost of sales — 15,094 3,485 (18,579 ) — Selling, general and administrative 310 523,844 238,325 — 762,479 Depreciation and amortization 68 308,284 176,023 — 484,375 Loss (Gain) on disposal/write-down of property, plant and equipment, net — 18,436 (35,523 ) — (17,087 ) Total Operating Expenses 378 1,654,522 971,409 (18,579 ) 2,607,730 Operating (Loss) Income (378 ) 317,563 258,079 — 575,264 Interest Expense (Income), Net(1) 151,392 19,128 143,907 — 314,427 Other (Income) Expense, Net (55 ) 16,636 (29,978 ) — (13,397 ) (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (151,715 ) 281,799 144,150 — 274,234 Provision (Benefit) for Income Taxes — 15,268 27,859 — 43,127 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (381,392 ) (111,897 ) — 493,289 — Income (Loss) from Continuing Operations 229,677 378,428 116,291 (493,289 ) 231,107 Income (Loss) from Discontinued Operations — 120 (16 ) — 104 Net Income (Loss) 229,677 378,548 116,275 (493,289 ) 231,211 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 1,534 — 1,534 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 229,677 $ 378,548 $ 114,741 $ (493,289 ) $ 229,677 Net Income (Loss) $ 229,677 $ 378,548 $ 116,275 $ (493,289 ) $ 231,211 Other Comprehensive (Loss) Income: Foreign Currency Translation Adjustments 14,962 — (86,157 ) — (71,195 ) Change in Fair Value of Derivative Instruments (9,101 ) — — — (9,101 ) Equity in Other Comprehensive (Loss) Income of Subsidiaries (86,400 ) (72,858 ) — 159,258 — Total Other Comprehensive (Loss) Income (80,539 ) (72,858 ) (86,157 ) 159,258 (80,296 ) Comprehensive Income (Loss) 149,138 305,690 30,118 (334,031 ) 150,915 Comprehensive Income (Loss) Attributable to Noncontrolling Interests — — 1,777 — 1,777 Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 149,138 $ 305,690 $ 28,341 $ (334,031 ) $ 149,138 _____________________________________________________________ (1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements. CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued) Nine Months Ended September 30, 2018 Parent Guarantors Non- Eliminations Consolidated Revenues: Storage rental $ — $ 1,201,035 $ 762,526 $ — $ 1,963,561 Service — 726,915 473,796 — 1,200,711 Intercompany revenues — 3,613 13,126 (16,739 ) — Total Revenues — 1,931,563 1,249,448 (16,739 ) 3,164,272 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 753,837 594,366 — 1,348,203 Intercompany cost of sales — 13,126 3,613 (16,739 ) — Selling, general and administrative (348 ) 531,507 258,165 — 789,324 Depreciation and amortization 96 299,372 175,127 — 474,595 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (2,491 ) 427 — (2,064 ) Total Operating Expenses (252 ) 1,595,351 1,031,698 (16,739 ) 2,610,058 Operating Income (Loss) 252 336,212 217,750 — 554,214 Interest Expense (Income), Net(1) 150,218 4,863 148,755 — 303,836 Other Expense (Income), Net 2,049 12,323 (12,952 ) — 1,420 (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (152,015 ) 319,026 81,947 — 248,958 Provision (Benefit) for Income Taxes — 14,810 25,147 — 39,957 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (348,104 ) (54,395 ) — 402,499 — Income (Loss) from Continuing Operations 196,089 358,611 56,800 (402,499 ) 209,001 (Loss) Income from Discontinued Operations — (12,283 ) (144 ) — (12,427 ) Net Income (Loss) 196,089 346,328 56,656 (402,499 ) 196,574 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 485 — 485 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 196,089 $ 346,328 $ 56,171 $ (402,499 ) $ 196,089 Net Income (Loss) $ 196,089 $ 346,328 $ 56,656 $ (402,499 ) $ 196,574 Other Comprehensive (Loss) Income: Foreign Currency Translation Adjustment 6,761 — (139,051 ) — (132,290 ) Change in Fair Value of Derivative Instruments 4,183 — — — 4,183 Equity in Other Comprehensive (Loss) Income of Subsidiaries (135,215 ) (105,967 ) — 241,182 — Total Other Comprehensive (Loss) Income (124,271 ) (105,967 ) (139,051 ) 241,182 (128,107 ) Comprehensive Income (Loss) 71,818 240,361 (82,395 ) (161,317 ) 68,467 Comprehensive (Loss) Income Attributable to Noncontrolling Interests — — (3,351 ) — (3,351 ) Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 71,818 $ 240,361 $ (79,044 ) $ (161,317 ) $ 71,818 ______________________________________________________ (1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements.
Schedule of selected consolidated Comprehensive Income statements of Parent, Guarantors, Canada Company and Non-Guarantors	CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) Three Months Ended September 30, 2019 Parent Guarantors Non- Eliminations Consolidated Revenues: Storage rental $ — $ 416,967 $ 256,351 $ — $ 673,318 Service — 245,584 143,322 — 388,906 Intercompany revenues — 1,173 5,631 (6,804 ) — Total Revenues — 663,724 405,304 (6,804 ) 1,062,224 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 262,183 189,134 — 451,317 Intercompany — 5,631 1,173 (6,804 ) — Selling, general and administrative 161 162,052 76,943 — 239,156 Depreciation and amortization 23 100,023 57,515 — 157,561 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (8,922 ) (362 ) — (9,284 ) Total Operating Expenses 184 520,967 324,403 (6,804 ) 838,750 Operating (Loss) Income (184 ) 142,757 80,901 — 223,474 Interest Expense (Income), Net(1) 52,166 6,074 48,437 — 106,677 Other (Income) Expense, Net (596 ) 11,577 (24,396 ) — (13,415 ) (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (51,754 ) 125,106 56,860 — 130,212 Provision (Benefit) for Income Taxes — 12,814 9,114 — 21,928 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (159,429 ) (46,345 ) — 205,774 — Income (Loss) from Continuing Operations 107,675 158,637 47,746 (205,774 ) 108,284 Income (Loss) from Discontinued Operations, Net of Tax — — — — — Net Income (Loss) 107,675 158,637 47,746 (205,774 ) 108,284 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 609 — 609 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 107,675 $ 158,637 $ 47,137 $ (205,774 ) $ 107,675 Net Income (Loss) $ 107,675 $ 158,637 $ 47,746 $ (205,774 ) $ 108,284 Other Comprehensive (Loss) Income: Foreign Currency Translation Adjustments 13,101 — (96,696 ) — (83,595 ) Change in Fair Value of Derivative Instruments (1,496 ) — — — (1,496 ) Equity in Other Comprehensive (Loss) Income of Subsidiaries (95,987 ) (81,135 ) — 177,122 — Total Other Comprehensive (Loss) Income (84,382 ) (81,135 ) (96,696 ) 177,122 (85,091 ) Comprehensive Income (Loss) 23,293 77,502 (48,950 ) (28,652 ) 23,193 Comprehensive (Loss) Income Attributable to Noncontrolling Interests — — (100 ) — (100 ) Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 23,293 $ 77,502 $ (48,850 ) $ (28,652 ) $ 23,293 __________________________________________________________ (1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements. CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued) Three Months Ended September 30, 2018 Parent Guarantors Non- Eliminations Consolidated Revenues: Storage rental $ — $ 404,397 $ 252,576 $ — $ 656,973 Service — 250,471 153,547 — 404,018 Intercompany revenues — 1,192 4,330 (5,522 ) — Total Revenues — 656,060 410,453 (5,522 ) 1,060,991 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 254,068 193,950 — 448,018 Intercompany cost of sales — 4,330 1,192 (5,522 ) — Selling, general and administrative (427 ) 177,777 82,579 — 259,929 Depreciation and amortization 31 100,210 57,556 — 157,797 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (1,669 ) 1,281 — (388 ) Total Operating Expenses (396 ) 534,716 336,558 (5,522 ) 865,356 Operating Income (Loss) 396 121,344 73,895 — 195,635 Interest Expense (Income), Net(1) 49,964 3,151 50,823 — 103,938 Other Expense (Income), Net 439 4,155 (4,269 ) — 325 (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (50,007 ) 114,038 27,341 — 91,372 Provision (Benefit) for Income Taxes — 9,012 5,011 — 14,023 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (115,876 ) (25,414 ) — 141,290 — Income (Loss) from Continuing Operations 65,869 130,440 22,330 (141,290 ) 77,349 (Loss) Income from Discontinued Operations — (11,588 ) (17 ) — (11,605 ) Net Income (Loss) 65,869 118,852 22,313 (141,290 ) 65,744 Less: Net (Loss) Income Attributable to Noncontrolling Interests — — (125 ) — (125 ) Net Income (Loss) Attributable to Iron Mountain Incorporated $ 65,869 $ 118,852 $ 22,438 $ (141,290 ) $ 65,869 Net Income (Loss) $ 65,869 $ 118,852 $ 22,313 $ (141,290 ) $ 65,744 Other Comprehensive (Loss) Income: Foreign Currency Translation Adjustment 2,139 — (26,908 ) — (24,769 ) Change in Fair Value of Derivative Instruments 1,980 — — — 1,980 Equity in Other Comprehensive (Loss) Income of Subsidiaries (24,929 ) (14,443 ) — 39,372 — Total Other Comprehensive (Loss) Income (20,810 ) (14,443 ) (26,908 ) 39,372 (22,789 ) Comprehensive Income (Loss) 45,059 104,409 (4,595 ) (101,918 ) 42,955 Comprehensive (Loss) Income Attributable to Noncontrolling Interests — — (2,104 ) — (2,104 ) Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 45,059 $ 104,409 $ (2,491 ) $ (101,918 ) $ 45,059 _____________________________________________________________ (1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements. CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued) Nine Months Ended September 30, 2019 Parent Guarantors Non- Eliminations Consolidated Revenues: Storage rental $ — $ 1,235,353 $ 770,227 $ — $ 2,005,580 Service — 733,247 444,167 — 1,177,414 Intercompany revenues — 3,485 15,094 (18,579 ) — Total Revenues — 1,972,085 1,229,488 (18,579 ) 3,182,994 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 788,864 589,099 — 1,377,963 Intercompany cost of sales — 15,094 3,485 (18,579 ) — Selling, general and administrative 310 523,844 238,325 — 762,479 Depreciation and amortization 68 308,284 176,023 — 484,375 Loss (Gain) on disposal/write-down of property, plant and equipment, net — 18,436 (35,523 ) — (17,087 ) Total Operating Expenses 378 1,654,522 971,409 (18,579 ) 2,607,730 Operating (Loss) Income (378 ) 317,563 258,079 — 575,264 Interest Expense (Income), Net(1) 151,392 19,128 143,907 — 314,427 Other (Income) Expense, Net (55 ) 16,636 (29,978 ) — (13,397 ) (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (151,715 ) 281,799 144,150 — 274,234 Provision (Benefit) for Income Taxes — 15,268 27,859 — 43,127 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (381,392 ) (111,897 ) — 493,289 — Income (Loss) from Continuing Operations 229,677 378,428 116,291 (493,289 ) 231,107 Income (Loss) from Discontinued Operations — 120 (16 ) — 104 Net Income (Loss) 229,677 378,548 116,275 (493,289 ) 231,211 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 1,534 — 1,534 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 229,677 $ 378,548 $ 114,741 $ (493,289 ) $ 229,677 Net Income (Loss) $ 229,677 $ 378,548 $ 116,275 $ (493,289 ) $ 231,211 Other Comprehensive (Loss) Income: Foreign Currency Translation Adjustments 14,962 — (86,157 ) — (71,195 ) Change in Fair Value of Derivative Instruments (9,101 ) — — — (9,101 ) Equity in Other Comprehensive (Loss) Income of Subsidiaries (86,400 ) (72,858 ) — 159,258 — Total Other Comprehensive (Loss) Income (80,539 ) (72,858 ) (86,157 ) 159,258 (80,296 ) Comprehensive Income (Loss) 149,138 305,690 30,118 (334,031 ) 150,915 Comprehensive Income (Loss) Attributable to Noncontrolling Interests — — 1,777 — 1,777 Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 149,138 $ 305,690 $ 28,341 $ (334,031 ) $ 149,138 _____________________________________________________________ (1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements. CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued) Nine Months Ended September 30, 2018 Parent Guarantors Non- Eliminations Consolidated Revenues: Storage rental $ — $ 1,201,035 $ 762,526 $ — $ 1,963,561 Service — 726,915 473,796 — 1,200,711 Intercompany revenues — 3,613 13,126 (16,739 ) — Total Revenues — 1,931,563 1,249,448 (16,739 ) 3,164,272 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 753,837 594,366 — 1,348,203 Intercompany cost of sales — 13,126 3,613 (16,739 ) — Selling, general and administrative (348 ) 531,507 258,165 — 789,324 Depreciation and amortization 96 299,372 175,127 — 474,595 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (2,491 ) 427 — (2,064 ) Total Operating Expenses (252 ) 1,595,351 1,031,698 (16,739 ) 2,610,058 Operating Income (Loss) 252 336,212 217,750 — 554,214 Interest Expense (Income), Net(1) 150,218 4,863 148,755 — 303,836 Other Expense (Income), Net 2,049 12,323 (12,952 ) — 1,420 (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (152,015 ) 319,026 81,947 — 248,958 Provision (Benefit) for Income Taxes — 14,810 25,147 — 39,957 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (348,104 ) (54,395 ) — 402,499 — Income (Loss) from Continuing Operations 196,089 358,611 56,800 (402,499 ) 209,001 (Loss) Income from Discontinued Operations — (12,283 ) (144 ) — (12,427 ) Net Income (Loss) 196,089 346,328 56,656 (402,499 ) 196,574 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 485 — 485 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 196,089 $ 346,328 $ 56,171 $ (402,499 ) $ 196,089 Net Income (Loss) $ 196,089 $ 346,328 $ 56,656 $ (402,499 ) $ 196,574 Other Comprehensive (Loss) Income: Foreign Currency Translation Adjustment 6,761 — (139,051 ) — (132,290 ) Change in Fair Value of Derivative Instruments 4,183 — — — 4,183 Equity in Other Comprehensive (Loss) Income of Subsidiaries (135,215 ) (105,967 ) — 241,182 — Total Other Comprehensive (Loss) Income (124,271 ) (105,967 ) (139,051 ) 241,182 (128,107 ) Comprehensive Income (Loss) 71,818 240,361 (82,395 ) (161,317 ) 68,467 Comprehensive (Loss) Income Attributable to Noncontrolling Interests — — (3,351 ) — (3,351 ) Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 71,818 $ 240,361 $ (79,044 ) $ (161,317 ) $ 71,818 ______________________________________________________ (1) Included within Interest Expense (Income), Net are intercompany management fees and royalty fees, which are eliminated in our consolidated financial statements.
Schedule of selected consolidated cash flow statements of Parent, Guarantors, Canada Company and Non-Guarantors	CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Nine Months Ended September 30, 2019 Parent Guarantors Non- Eliminations Consolidated Cash Flows from Operating Activities: Cash Flows from Operating Activities—Continuing Operations $ (161,288 ) $ 596,529 $ 212,904 $ — $ 648,145 Cash Flows from Operating Activities—Discontinued Operations — — — — — Cash Flows from Operating Activities (161,288 ) 596,529 212,904 — 648,145 Cash Flows from Investing Activities: Capital expenditures — (306,567 ) (227,047 ) — (533,614 ) Cash paid for acquisitions, net of cash acquired — (9,508 ) (46,991 ) — (56,499 ) Intercompany loans to subsidiaries (295,124 ) 6,526 — 288,598 — Acquisitions of customer relationships, customer inducements and data center lease-based intangibles — (86,052 ) (27,457 ) — (113,509 ) Investments in joint ventures (see Note 10) — (19,222 ) — — (19,222 ) Proceeds from sales of property and equipment and other, net — 33,031 49,117 — 82,148 Cash Flows from Investing Activities—Continuing Operations (295,124 ) (381,792 ) (252,378 ) 288,598 (640,696 ) Cash Flows from Investing Activities—Discontinued Operations — 2,564 2,497 — 5,061 Cash Flows from Investing Activities (295,124 ) (379,228 ) (249,881 ) 288,598 (635,635 ) Cash Flows from Financing Activities: Repayment of revolving credit facility, term loan facilities and other debt — (9,507,136 ) (3,183,555 ) — (12,690,691 ) Proceeds from revolving credit facility, term loan facilities and other debt — 9,068,245 3,188,031 — 12,256,276 Net proceeds from sales of senior notes 987,500 — — — 987,500 Debit (payments) balances under cash pools — (10,612 ) 76,267 (65,655 ) — Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net — — (1,464 ) — (1,464 ) Intercompany loans from parent — 326,566 (37,968 ) (288,598 ) — Parent cash dividends (528,908 ) — — — (528,908 ) Net (payments) proceeds associated with employee stock-based awards (2,059 ) — — — (2,059 ) Payment of debt financing and stock issuance costs (243 ) — (526 ) — (769 ) Cash Flows from Financing Activities—Continuing Operations 456,290 (122,937 ) 40,785 (354,253 ) 19,885 Cash Flows from Financing Activities—Discontinued Operations — — — — — Cash Flows from Financing Activities 456,290 (122,937 ) 40,785 (354,253 ) 19,885 Effect of exchange rates on cash and cash equivalents — — (11,102 ) — (11,102 ) (Decrease) Increase in cash and cash equivalents (122 ) 94,364 (7,294 ) (65,655 ) 21,293 Cash and cash equivalents, including Restricted Cash, beginning of period 132 63,407 169,318 (67,372 ) 165,485 Cash and cash equivalents, including Restricted Cash, $ 10 $ 157,771 $ 162,024 $ (133,027 ) $ 186,778 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued) Nine Months Ended September 30, 2018 Parent Guarantors Non- Eliminations Consolidated Cash Flows from Operating Activities: Cash Flows from Operating Activities—Continuing Operations $ (208,384 ) $ 644,493 $ 189,429 $ — $ 625,538 Cash Flows from Operating Activities—Discontinued Operations — (995 ) — — (995 ) Cash Flows from Operating Activities (208,384 ) 643,498 189,429 — 624,543 Cash Flows from Investing Activities: Capital expenditures — (224,594 ) (105,359 ) — (329,953 ) Cash paid for acquisitions, net of cash acquired — (1,332,235 ) (378,776 ) — (1,711,011 ) Intercompany loans to subsidiaries 629,918 (23,092 ) — (606,826 ) — Acquisitions of customer relationships, customer inducements and data center lease-based intangibles — (47,531 ) (16,030 ) — (63,561 ) Net proceeds from Divestments — 1,019 — — 1,019 Proceeds from sales of property and equipment and other, net — 283 430 — 713 Cash Flows from Investing Activities—Continuing Operations 629,918 (1,626,150 ) (499,735 ) (606,826 ) (2,102,793 ) Cash Flows from Investing Activities—Discontinued Operations — — — — — Cash Flows from Investing Activities 629,918 (1,626,150 ) (499,735 ) (606,826 ) (2,102,793 ) Cash Flows from Financing Activities: Repayment of revolving credit facility, term loan facilities and other debt — (5,386,024 ) (5,840,147 ) — (11,226,171 ) Proceeds from revolving credit facility, term loan facilities and other debt — 6,456,050 5,980,967 — 12,437,017 Debit (payments) balances under cash pools — (832 ) (389 ) 1,221 — Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net — — (2,035 ) — (2,035 ) Intercompany loans from parent — (664,591 ) 57,765 606,826 — Parent cash dividends (505,403 ) — — — (505,403 ) Net (payments) proceeds associated with employee stock-based awards (2,800 ) — — — (2,800 ) Net proceeds associated with the Over-Allotment Option exercise 76,192 — — — 76,192 Net proceeds associated with the At the Market (ATM) Program 8,716 — — — 8,716 Payment of debt financing and stock issuance costs (412 ) (12,388 ) (3,157 ) — (15,957 ) Cash Flows from Financing Activities—Continuing Operations (423,707 ) 392,215 193,004 608,047 769,559 Cash Flows from Financing Activities—Discontinued Operations — — — — — Cash Flows from Financing Activities (423,707 ) 392,215 193,004 608,047 769,559 Effect of exchange rates on cash and cash equivalents — — (19,332 ) — (19,332 ) (Decrease) Increase in cash and cash equivalents (2,173 ) (590,437 ) (136,634 ) 1,221 (728,023 ) Cash and cash equivalents, including Restricted Cash, beginning of period 2,433 642,408 375,584 (94,726 ) 925,699 Cash and cash equivalents, including Restricted Cash, end of period $ 260 $ 51,971 $ 238,950 $ (93,505 ) $ 197,676

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Schedule of analysis of business segment information and reconciliation	An analysis of our business segment information and reconciliation to the accompanying Condensed Consolidated Financial Statements is as follows: North American North American Western European Business Other International Business Global Data Center Business Corporate Business Total For the Three Months Ended September 30, 2019 Total Revenues $ 542,044 $ 96,552 $ 121,437 $ 197,728 $ 64,418 $ 40,045 $ 1,062,224 Storage Rental 317,820 66,497 78,009 128,715 62,001 20,276 673,318 Service 224,224 30,055 43,428 69,013 2,417 19,769 388,906 Depreciation and Amortization 58,801 6,709 13,257 30,008 34,067 14,719 157,561 Depreciation 45,394 4,620 9,137 17,512 20,193 11,296 108,152 Amortization 13,407 2,089 4,120 12,496 13,874 3,423 49,409 Adjusted EBITDA 246,415 54,378 38,639 62,120 32,261 (58,112 ) 375,701 Expenditures for Segment Assets 64,098 2,822 18,125 43,290 58,060 14,883 201,278 Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations) 46,376 2,822 16,191 28,944 57,267 14,883 166,483 Cash Paid for Acquisitions, Net of Cash Acquired — — — 11,848 — — 11,848 Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs and third-party commissions 17,722 — 1,934 2,498 793 — 22,947 For the Three Months Ended September 30, 2018 Total Revenues $ 539,603 $ 97,477 $ 126,354 $ 200,639 $ 63,380 $ 33,538 $ 1,060,991 Storage Rental 306,633 67,779 79,492 124,920 60,039 18,110 656,973 Service 232,970 29,698 46,862 75,719 3,341 15,428 404,018 Depreciation and Amortization 59,869 9,472 14,316 31,487 27,965 14,688 157,797 Depreciation 46,756 7,277 9,996 19,272 16,431 13,258 112,990 Amortization 13,113 2,195 4,320 12,215 11,534 1,430 44,807 Adjusted EBITDA 248,600 53,484 40,817 60,106 27,299 (67,976 ) 362,330 Expenditures for Segment Assets 53,665 5,033 2,774 49,330 42,585 29,435 182,822 Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations) 31,373 5,033 551 21,929 41,896 11,570 112,352 Cash Paid for Acquisitions, Net of Cash Acquired — — — 26,277 — 17,865 44,142 Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs 22,292 — 2,223 1,124 689 — 26,328 North American North American Western European Business Other International Business Global Data Center Business Corporate Business Total As of and for the Nine Months Ended September 30, 2019 Total Revenues $ 1,608,697 $ 289,714 $ 377,517 $ 598,507 $ 188,245 $ 120,314 $ 3,182,994 Storage Rental 938,161 199,819 237,258 387,086 182,301 60,955 2,005,580 Service 670,536 89,895 140,259 211,421 5,944 59,359 1,177,414 Depreciation and Amortization 181,494 27,011 42,842 91,367 98,370 43,291 484,375 Depreciation 137,801 20,451 30,560 53,563 58,233 35,877 336,485 Amortization 43,693 6,560 12,282 37,804 40,137 7,414 147,890 Adjusted EBITDA 715,683 157,998 122,011 178,993 85,913 (209,449 ) 1,051,149 Total Assets(1) 5,742,593 860,101 1,319,442 2,620,709 2,349,917 684,405 13,577,167 Expenditures for Segment Assets 166,908 13,708 72,560 93,373 314,242 42,831 703,622 Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations) 103,660 13,708 41,031 56,048 279,856 39,311 533,614 Cash Paid for Acquisitions, Net of Cash Acquired 9,876 — 11,850 31,253 — 3,520 56,499 Acquisitions of Customer Relationships and Customer Inducements and Contract Fulfillment Costs and third-party commissions 53,372 — 19,679 6,072 34,386 — 113,509 As of and for the Nine Months Ended September 30, 2018 Total Revenues $ 1,605,526 $ 297,472 $ 393,869 $ 618,933 $ 164,878 $ 83,594 $ 3,164,272 Storage Rental 917,347 205,833 245,883 386,278 157,479 50,741 1,963,561 Service 688,179 91,639 147,986 232,655 7,399 32,853 1,200,711 Depreciation and Amortization 183,591 29,114 49,372 93,724 72,736 46,058 474,595 Depreciation 144,146 22,517 34,575 56,535 40,931 39,219 337,923 Amortization 39,445 6,597 14,797 37,189 31,805 6,839 136,672 Adjusted EBITDA 719,199 162,616 131,377 181,305 72,990 (202,027 ) 1,065,460 Total Assets(1) 4,961,149 823,868 1,104,221 2,328,574 2,159,955 433,103 11,810,870 Expenditures for Segment Assets 138,210 15,529 37,813 111,777 1,745,770 55,426 2,104,525 Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations) 86,365 15,529 31,694 60,992 98,169 37,204 329,953 Cash Paid for Acquisitions, Net of Cash Acquired 1,551 — — 45,673 1,645,922 17,865 1,711,011 Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs 50,294 — 6,119 5,112 1,679 357 63,561 ______________________________________________________________ (1) Excludes all intercompany receivables or payables and investment in subsidiary balances. Total assets as of September 30, 2019 reflects the adoption of ASU 2016-02.
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 for the three and nine months ended September 30, 2019 and 2018 is as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Adjusted EBITDA $ 375,701 $ 362,330 $ 1,051,149 $ 1,065,460 (Add)/Deduct: Provision (Benefit) for Income Taxes 21,928 14,023 43,127 39,957 Other (Income) Expense, Net (13,415 ) 325 (13,397 ) 1,420 Interest Expense, Net 106,677 103,938 314,427 303,836 (Gain) Loss on disposal/write-down of property, plant and equipment, net (9,284 ) (388 ) (17,087 ) (2,064 ) Depreciation and amortization 157,561 157,797 484,375 474,595 Significant Acquisition Costs(1) 3,950 9,286 8,597 38,715 Income (Loss) from Continuing Operations $ 108,284 $ 77,349 $ 231,107 $ 209,001 _______________________________________________________________________________ (1) As defined in Note 9 to Notes to Consolidated Financial Statements included in our Annual Report.
Schedule of revenues by product and service lines by segment	Information as to our revenues by product and service lines by segment for the three and nine months ended September 30, 2019 and 2018 are as follows: North American Records and Information Management Business North American Data Management Business Western European Business Other International Business Global Data Center Business Corporate and Other Business Total Consolidated For the Three Months Ended September 30, 2019 Records Management(1) $ 452,336 $ — $ 103,683 $ 169,748 $ — $ 23,837 $ 749,604 Data Management(1) — 93,016 17,551 18,884 — 16,208 145,659 Information Destruction(1)(2) 89,708 3,536 203 9,096 — — 102,543 Data Center — — — — 64,418 — 64,418 Total Revenues $ 542,044 $ 96,552 $ 121,437 $ 197,728 $ 64,418 $ 40,045 $ 1,062,224 For the Three Months Ended September 30, 2018 Records Management(1) $ 441,102 $ — $ 107,388 $ 173,426 $ — $ 19,183 $ 741,099 Data Management(1) — 94,917 18,914 18,541 — 14,355 146,727 Information Destruction(1)(2) 98,501 2,560 52 8,672 — — 109,785 Data Center — — — — 63,380 — 63,380 Total Revenues $ 539,603 $ 97,477 $ 126,354 $ 200,639 $ 63,380 $ 33,538 $ 1,060,991 For the Nine Months Ended September 30, 2019 Records Management(1) $ 1,322,488 $ — $ 321,759 $ 515,158 $ — $ 74,377 $ 2,233,782 Data Management(1) — 280,157 54,345 56,898 — 45,937 437,337 Information Destruction(1)(2) 286,209 9,557 1,413 26,451 — — 323,630 Data Center — — — — 188,245 — 188,245 Total Revenues $ 1,608,697 $ 289,714 $ 377,517 $ 598,507 $ 188,245 $ 120,314 $ 3,182,994 For the Nine Months Ended September 30, 2018 Records Management(1) $ 1,317,505 $ — $ 335,072 $ 533,950 $ — $ 41,388 $ 2,227,915 Data Management(1) — 290,279 58,526 58,246 — 42,206 449,257 Information Destruction(1)(2) 288,021 7,193 271 26,737 — — 322,222 Data Center — — — — 164,878 — 164,878 Total Revenues $ 1,605,526 $ 297,472 $ 393,869 $ 618,933 $ 164,878 $ 83,594 $ 3,164,272 ____________________________________________________________________________ (1) Each of the offerings within our product and service lines has a component of revenue that is storage rental related and a component that is service revenues, except for information destruction, which does not have a storage rental component. (2) Includes secure shredding services.

Stockholders' Equity Matters (T

Stockholders' Equity Matters (Tables)	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Schedule of dividend declared and payments	In fiscal year 2018 and the first nine months of 2019, our board of directors declared the following dividends: Declaration Date Dividend Record Date Total Payment Date February 14, 2018 $ 0.5875 March 15, 2018 $ 167,969 April 2, 2018 May 24, 2018 0.5875 June 15, 2018 168,078 July 2, 2018 July 24, 2018 0.5875 September 17, 2018 168,148 October 2, 2018 October 25, 2018 0.6110 December 17, 2018 174,935 January 3, 2019 February 7, 2019 0.6110 March 15, 2019 175,242 April 2, 2019 May 22, 2019 0.6110 June 17, 2019 175,389 July 2, 2019 July 26, 2019 0.6110 September 16, 2019 175,434 October 2, 2019

Significant Acquisition Costs (

Significant Acquisition Costs (Tables)	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Schedule of Acquisition costs Included in Statement of Operations	Significant Acquisition Costs included in the accompanying Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2019 and 2018 are as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Cost of sales (excluding depreciation and amortization) $ 1,945 $ 2,892 $ 4,136 $ 5,015 Selling, general and administrative expenses 2,005 6,394 4,461 33,700 Total Significant Acquisition Costs $ 3,950 $ 9,286 $ 8,597 $ 38,715 Significant Acquisition Costs included in the accompanying Condensed Consolidated Statements of Operations by segment for the three and nine months ended September 30, 2019 and 2018 are as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 North American Records and Information Management Business $ 796 $ 950 $ 1,174 $ 4,551 North American Data Management Business 11 83 11 434 Western European Business 4 1,806 85 5,385 Other International Business 1,307 2,001 2,760 3,434 Global Data Center Business 70 232 337 11,572 Corporate and Other Business 1,762 4,214 4,230 13,339 Total Significant Acquisition Costs $ 3,950 $ 9,286 $ 8,597 $ 38,715

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Cash and Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Cash and Cash Equivalents and Restricted Cash [Abstract]
Restricted cash	$ 8,057	$ 15,141

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Schedule of Changes in Carrying Value of Goodwill (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)
Gross amount of goodwill [Roll Forward]
Goodwill beginning balance	$ 4,441,030
Deductible goodwill acquired during the year	16,117
Non-deductible goodwill acquired during the year	11,553
Fair value and other adjustments	205
Currency effects	(46,910)
Goodwill ending balance	4,421,995
Accumulated goodwill impairment, beginning balance	135,420
Accumulated goodwill impairment, ending balance	135,420
Total fair value and other adjustments	867
Cash received	662
North American Records and Information Management Business
Gross amount of goodwill [Roll Forward]
Goodwill beginning balance	2,251,795
Deductible goodwill acquired during the year	5,109
Non-deductible goodwill acquired during the year	0
Fair value and other adjustments	55
Currency effects	5,501
Goodwill ending balance	2,262,460
Accumulated goodwill impairment, beginning balance	85,909
Accumulated goodwill impairment, ending balance	85,909
North American Data Management Business
Gross amount of goodwill [Roll Forward]
Goodwill beginning balance	493,491
Deductible goodwill acquired during the year	0
Non-deductible goodwill acquired during the year	0
Fair value and other adjustments	0
Currency effects	1,495
Goodwill ending balance	494,986
Accumulated goodwill impairment, beginning balance	0
Accumulated goodwill impairment, ending balance	0
Western European Business
Gross amount of goodwill [Roll Forward]
Goodwill beginning balance	381,806
Deductible goodwill acquired during the year	675
Non-deductible goodwill acquired during the year	5,011
Fair value and other adjustments	(1,012)
Currency effects	(15,717)
Goodwill ending balance	370,763
Accumulated goodwill impairment, beginning balance	46,500
Accumulated goodwill impairment, ending balance	46,500
Other International Business
Gross amount of goodwill [Roll Forward]
Goodwill beginning balance	818,223
Deductible goodwill acquired during the year	10,333
Non-deductible goodwill acquired during the year	4,638
Fair value and other adjustments	1,321
Currency effects	(32,461)
Goodwill ending balance	802,054
Accumulated goodwill impairment, beginning balance	0
Accumulated goodwill impairment, ending balance	0
Global Data Center Business
Gross amount of goodwill [Roll Forward]
Goodwill beginning balance	425,956
Deductible goodwill acquired during the year	0
Non-deductible goodwill acquired during the year	0
Fair value and other adjustments	258
Currency effects	(5,182)
Goodwill ending balance	421,032
Accumulated goodwill impairment, beginning balance	0
Accumulated goodwill impairment, ending balance	0
Corporate and Other Business
Gross amount of goodwill [Roll Forward]
Goodwill beginning balance	69,759
Deductible goodwill acquired during the year	0
Non-deductible goodwill acquired during the year	1,904
Fair value and other adjustments	(417)
Currency effects	(546)
Goodwill ending balance	70,700
Accumulated goodwill impairment, beginning balance	3,011
Accumulated goodwill impairment, ending balance	$ 3,011

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Schedule of Components of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets:
Net Carrying Amount	$ 1,415,287	$ 1,506,522
Customer relationship intangible assets
Assets:
Gross Carrying Amount	1,747,535	1,718,919
Accumulated Amortization	(529,164)	(455,705)
Net Carrying Amount	1,218,371	1,263,214
Customer inducements
Assets:
Gross Carrying Amount	53,097	56,478
Accumulated Amortization	(30,298)	(34,181)
Net Carrying Amount	22,799	22,297
Data center lease-based intangible assets
Assets:
Gross Carrying Amount	264,382	271,818
Accumulated Amortization	(90,265)	(50,807)
Net Carrying Amount	174,117	221,011
Liabilities:
Gross Carrying Amount	12,720	12,318
Accumulated Amortization	(3,424)	(1,642)
Net Carrying Amount	9,296	10,676
Third-party commissions asset
Assets:
Gross Carrying Amount	31,708	30,071
Accumulated Amortization	(3,001)	(1,089)
Net Carrying Amount	28,707	28,982
Customer relationships, customer inducements and data center
Assets:
Gross Carrying Amount	2,096,722	2,077,286
Accumulated Amortization	(652,728)	(541,782)
Net Carrying Amount	$ 1,443,994	$ 1,535,504

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Schedule Of Other Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	$ 1,415,287	$ 1,506,522
Other finite-lived intangible assets (included in Other, a component of Other assets, net)
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	19,842	20,310
Accumulated Amortization	(17,385)	(14,798)
Net Carrying Amount	$ 2,457	$ 5,512

Summary of Significant Accoun_8

Summary of Significant Accounting Policies - Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 49,409	$ 44,807	$ 147,890	$ 136,672
Customer relationship and customer inducement intangible assets
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	29,064	26,782	85,228	84,401
Data center in-place leases and tenant relationships
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	11,356	12,036	35,337	30,437
Third-party commissions asset and other finite-lived intangible assets
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	2,515	642	5,456	3,486
Customer inducements
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	2,303	3,229	7,641	8,782
Data center above-market leases and data center below-market leases
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 936	$ 1,276	$ 2,776	$ 3,648

Summary of Significant Accoun_9

Summary of Significant Accounting Policies - Contract Fulfillment Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Intake Costs asset
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Gross Carrying Amount	$ 37,938	$ 39,748
Accumulated Amortization	(20,974)	(24,504)
Net Carrying Amount	16,964	15,244
Capitalized commissions asset
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Gross Carrying Amount	56,585	58,424
Accumulated Amortization	(21,933)	(34,637)
Net Carrying Amount	$ 34,652	$ 23,787

Summary of Significant Accou_10

Summary of Significant Accounting Policies - Amortization Expense Associated with Commissions Asset and Intake Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Intake Costs asset
Capitalized Contract Cost [Line Items]
Amortization expense	$ 2,250	$ 2,294	$ 7,764	$ 7,915
Capitalized commissions asset
Capitalized Contract Cost [Line Items]
Amortization expense	$ 4,224	$ 3,053	$ 14,105	$ 10,433

Summary of Significant Accou_11

Summary of Significant Accounting Policies - Summary of Deferred Revenue Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Deferred revenue	$ 257,328	$ 264,823
Other Long-term Liabilities	$ 26,572	$ 26,401

Summary of Significant Accou_12

Summary of Significant Accounting Policies - Revenue Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	$ 1,062,224	$ 1,060,991	$ 3,182,994	$ 3,164,272
Global Data Center Business
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	64,418	63,380	188,245	164,878
Storage rental
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	673,318	656,973	2,005,580	1,963,561
Storage rental | Global Data Center Business
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	62,001	$ 60,039	182,301	$ 157,479
Operating Segments | Storage Rental, Power and Connectivity | Global Data Center Business
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	$ 12,000		$ 31,000

Summary of Significant Accou_13

Summary of Significant Accounting Policies - Future Minimum Lease Payments (Details) - Operating Segments - Storage Rental, Power and Connectivity - Global Data Center Business $ in Thousands	Sep. 30, 2019USD ($)
Segment Information [Line Items]
2019 (excluding the nine months ended September 30, 2019)	$ 58,381
2020	177,528
2021	118,980
2022	83,677
2023	$ 67,569

Summary of Significant Accou_14

Summary of Significant Accounting Policies - Leases Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Sublease income	$ 1,667	$ 5,221
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Cumulative effect of new accounting principle in period of adoption			$ 5,800	$ 5,781
Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term	10 years	10 years
Lessee, operating lease, renewal term	5 years	5 years
Maximum | Vehicle and Equipment
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term	7 years	7 years
Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term	5 years	5 years
Lessee, operating lease, renewal term	1 year	1 year
Minimum | Vehicle and Equipment
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term	1 year	1 year

Summary of Significant Accou_15

Summary of Significant Accounting Policies - Supplemental Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Operating lease right-of-use assets	$ 1,765,496	$ 1,825,721	$ 0
Financing lease right-of-use assets, net of accumulated depreciation	327,264	361,078
Total	2,092,760	2,186,799
Current
Operating lease liabilities	216,176	209,911
Financing lease liabilities	47,112	50,437
Total current lease liabilities	263,288	260,348
Long-term
Operating lease liabilities	1,626,907	1,685,771	$ 0
Financing lease liabilities	318,986	350,263
Total long-term lease liabilities	1,945,893	2,036,034
Total	$ 2,209,181	$ 2,296,382
Operating lease, right-of-use asset, real estate assets, percent	98.00%
Operating lease, right-of-use asset, non-real estate assets, percent	2.00%
Finance lease, right-of-use asset, real estate assets, percent	64.00%
Finance lease, right-of-use asset, non-real estate assets, percent	36.00%

Summary of Significant Accou_16

Summary of Significant Accounting Policies - Leases Costs (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2019USD ($)
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 114,727	$ 343,282
Depreciation of financing lease right-of-use assets	14,679	45,950
Interest expense for financing lease liabilities	4,905	15,972
Total financing lease cost	19,584	61,922
Variable lease costs	$ 26,121	$ 78,712
Operating leases, Remaining Lease Term	11 years	11 years
Finance leases, Remaining Lease Term	11 years	11 years
Operating leases, Discount Rate	7.10%	7.10%
Financing leases, Discount Rate	5.60%	5.60%
Cost of Sales
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 111,423	$ 333,742
Selling, General and Administrative Expenses
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 3,304	$ 9,540

Summary of Significant Accou_17

Summary of Significant Accounting Policies - Estimated Future Lease Payments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Leases, Operating [Abstract]
2019 (excluding the nine months ended September 30, 2019)	$ 87,009
2020	323,448
2021	298,656
2022	274,021
2023	248,066
Thereafter	1,505,195
Total minimum lease payments	2,736,395
Less amounts representing interest or imputed interest	(893,312)
Present value of lease obligations	1,843,083
2019		$ 323,454
2020		293,276
2021		267,379
2022		246,128
2023		221,808
Thereafter		1,287,807
Total minimum lease payments		2,639,852
Lessee, Finance Sublease, Description [Abstract]
2019	(1,646)	(7,525)
2020	(7,520)	(7,200)
2021	(5,185)	(7,063)
2022	(4,905)	(6,694)
2023	(4,795)	(6,409)
Thereafter	(10,673)	(6,279)
Total minimum lease payments	(34,724)	(41,170)
Capital Lease Obligations [Abstract]
2019 (excluding the nine months ended September 30, 2019)	32,386
2020	57,887
2021	52,685
2022	46,358
2023	38,695
Thereafter	292,903
Total minimum lease payments	520,914
Less amounts representing interest or imputed interest	(154,816)
Present value of lease obligations	$ 366,098
2019		80,513
2020		71,335
2021		61,269
2022		52,832
2023		44,722
Thereafter		377,750
Total minimum lease payments		688,421
Less amounts representing interest or imputed interest		(241,248)
Present value of lease obligations		$ 447,173

Summary of Significant Accou_18

Summary of Significant Accounting Policies - Supplemental Cash Flows (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Accounting Policies [Abstract]
Operating cash flows used in operating leases	$ 252,277
Operating cash flows used in financing leases (interest)	15,972
Financing cash flows used in financing leases	44,808
Operating lease modifications and reassessments	42,418
New operating leases (including acquisitions)	117,193
New financing leases, modifications and reassessments	$ 20,699	$ 56,493

Summary of Significant Accou_19

Summary of Significant Accounting Policies - Stock-Based Compensation Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Employee Stock-Based Awards
Expiration period			3 years
Stock-based compensation	$ 7,120	$ 7,279	$ 28,140	$ 23,352
Stock-based compensation expense (income), net of tax	$ 6,632	$ 6,734	$ 26,216	$ 21,599
Stock-based compensation expense per basic and diluted share (in dollars per share)	$ 0.02	$ 0.02	$ 0.09	$ 0.08
Employee stock-based awards, unrecognized compensation costs on nonvested awards	$ 50,152		$ 50,152
Employee stock-based awards, unrecognized compensation costs on nonvested awards, weighted average period of recognition			1 year 10 months 24 days
Stock Options
Summary of Option Activity
Options outstanding balance, beginning of period (in shares)			4,271,834
Options granted (in shares)			920,706
Options exercised (in shares)			(236,704)
Options forfeited (in shares)			(13,542)
Options expired (in shares)			(16,715)
Options outstanding balance, end of period (in shares)	4,925,579		4,925,579
Options exercisable balance (in shares)	3,128,621		3,128,621
Options expected to vest (in shares)	1,716,446		1,716,446
Restricted Stock Units
Summary of Option Activity
Total fair value of shares or units vested	$ 3,092	$ 3,189	$ 20,802	$ 19,195
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Non-vested at the beginning of the period (in shares)			1,196,566
Granted (in shares)			752,555
Vested (in shares)			(611,828)
Forfeited (in shares)			(81,437)
Non-vested at the end of the period (in shares)	1,255,856		1,255,856
Performance units
Summary of Option Activity
Total fair value of shares or units vested	$ 1,176	$ 84	$ 7,679	$ 3,117
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Non-vested at the beginning of the period (in shares)			667,101
Granted (in shares)			380,856
Vested (in shares)			(202,141)
Forfeited (in shares)			(28,748)
Non-vested at the end of the period (in shares)	817,068		817,068
Performance units | Two Thousand Nineteen
Performance Units Disclosure
Percentage of achievement of the predefined revenue and ROIC targets	100.00%		100.00%
Performance units | Two Thousand Eighteen
Performance Units Disclosure
Percentage of achievement of the predefined revenue and ROIC targets	50.00%		50.00%
Performance units | Two Thousand Seventeen
Performance Units Disclosure
Percentage of achievement of the predefined revenue and ROIC targets	100.00%		100.00%
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)			967,049
Granted (in shares)			380,856
Vested (in shares)			(202,141)
Forfeited (in shares)			(13,898)
Non-vested at the end of the period (in shares)	1,131,866		1,131,866
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)			299,948
Granted (in shares)			0
Vested (in shares)			0
Forfeited (in shares)			(14,850)
Non-vested at the end of the period (in shares)	314,798		314,798

Summary of Significant Accou_20

Summary of Significant Accounting Policies - Income Per Share, Allowance for Doubtful Accounts, Income Taxes, and Concentration of Credit Risk (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income (Loss) Per Share-Basic and Diluted
Income (loss) from continuing operations	$ 108,284	$ 77,349	$ 231,107	$ 209,001
Less: Net Income (Loss) Attributable to Noncontrolling Interests	609	(125)	1,534	485
Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation)	107,675	77,474	229,573	208,516
(Loss) income from discontinued operations, net of tax	0	(11,605)	104	(12,427)
Net Income (Loss) Attributable to Iron Mountain Incorporated	$ 107,675	$ 65,869	$ 229,677	$ 196,089
Weighted-average shares—basic (in shares)	287,152,000	286,159,000	286,869,000	285,801,000
Effect of dilutive potential stock options (in shares)	93,752	264,451	157,928	250,574
Effect of dilutive potential restricted stock, RSUs and PUs (in shares)	445,081	558,891	528,387	463,583
Weighted-average shares—diluted (in shares)	287,690,833	286,982,342	287,555,315	286,515,157
Earnings (losses) per share—basic:
Income (loss) from continuing operations (in dollars per share)	$ 0.37	$ 0.27	$ 0.80	$ 0.73
(Loss) income from discontinued operations, net of tax (in dollars per share)	0	(0.04)	0	(0.04)
Net income (loss) attributable to Iron Mountain Incorporated (in dollars per share)	0.37	0.23	0.80	0.69
Earnings (losses) per share—diluted:
Income (loss) from continuing operations (in dollars per share)	0.37	0.27	0.80	0.73
(Loss) income from discontinued operations, net of tax (in dollars per share)	0	(0.04)	0	(0.04)
Net income (loss) attributable to Iron Mountain Incorporated (in dollars per share)	$ 0.37	$ 0.23	$ 0.80	$ 0.68
Antidilutive stock options, RSUs and PUs, excluded from the calculation (in shares)	4,782,661	3,253,975	4,590,645	3,256,206

Summary of Significant Accou_21

Summary of Significant Accounting Policies - Effective Income Tax Rates (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounting Policies [Abstract]
Effective Tax Rate	16.80%	15.30%	15.70%	16.00%
Federal statutory tax rate			21.00%	21.00%
Discrete tax benefit				$ 14,000

Summary of Significant Accou_22

Summary of Significant Accounting Policies - Fair Value Measurements (Details) - Fair value measured on recurring basis - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Quoted prices in active markets (Level 1)
Assets and Liabilities Carried at Fair Value Measured on a Recurring Basis [Line Items]
Money Market Funds	$ 0
Time Deposits		$ 0
Trading securities	9,540	10,248
Derivative Assets	0	0
Derivative Liabilities	0	0
Significant other observable inputs (Level 2)
Assets and Liabilities Carried at Fair Value Measured on a Recurring Basis [Line Items]
Money Market Funds	30,123
Time Deposits		956
Trading securities	456	505
Derivative Assets	1,972	93
Derivative Liabilities	12,046	973
Significant unobservable inputs (Level 3)
Assets and Liabilities Carried at Fair Value Measured on a Recurring Basis [Line Items]
Money Market Funds	0
Time Deposits		0
Trading securities	0	0
Derivative Assets	0	0
Derivative Liabilities	0	0
Estimate of Fair Value Measurement
Assets and Liabilities Carried at Fair Value Measured on a Recurring Basis [Line Items]
Money Market Funds	30,123
Time Deposits		956
Trading securities	9,996	10,753
Derivative Assets	1,972	93
Derivative Liabilities	$ 12,046	$ 973

Summary of Significant Accou_23

Summary of Significant Accounting Policies - Accumulated Other Comprehensive Income and Other Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
AOCI Rollforward
Beginning of Period			$ 1,861,054
Other comprehensive (loss) income:
Change in fair value of derivative instruments	$ (1,496)	$ 1,980	(9,101)	$ 4,183
End of Period	1,510,830		1,510,830
Foreign Currency Translation Adjustments
AOCI Rollforward
Beginning of Period	(253,243)	(209,653)	(264,691)	(103,989)
Other comprehensive (loss) income:
Foreign currency translation adjustment	(82,886)	(22,790)	(71,438)	(128,454)
Change in fair value of derivative instruments	0	0	0	0
Total other comprehensive (loss) income	(82,886)	(22,790)	(71,438)	(128,454)
End of Period	(336,129)	(232,443)	(336,129)	(232,443)
Change in Fair Value of Derivative Instruments
AOCI Rollforward
Beginning of Period	(8,578)	2,203	(973)	0
Other comprehensive (loss) income:
Foreign currency translation adjustment	0	0	0	0
Change in fair value of derivative instruments	(1,496)	1,980	(9,101)	4,183
Total other comprehensive (loss) income	(1,496)	1,980	(9,101)	4,183
End of Period	(10,074)	4,183	(10,074)	4,183
Total
AOCI Rollforward
Beginning of Period	(261,821)	(207,450)	(265,664)	(103,989)
Other comprehensive (loss) income:
Foreign currency translation adjustment	(82,886)	(22,790)	(71,438)	(128,454)
Change in fair value of derivative instruments	(1,496)	1,980	(9,101)	4,183
Total other comprehensive (loss) income	(84,382)	(20,810)	(80,539)	(124,271)
End of Period	$ (346,203)	$ (228,260)	$ (346,203)	$ (228,260)

Summary of Significant Accou_24

Summary of Significant Accounting Policies - Gain on Disposal/Write-Down of Property, Plant and Equipment, (net) (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019USD ($)facility	Jun. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on disposal/write-down of property, plant and equipment, net	$ 9,284		$ 388	$ 17,087	$ 2,064
Gain associated with a sale-leaseback transaction	$ 9,800
Number of facilities | facility	5
United Kingdom | Disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of real estate, net of tax		$ 36,000
North American Records and Information Management Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on disposal/write-down of property, plant and equipment, net				(3,100)
Iron Mountain Iron Cloud
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on disposal/write-down of property, plant and equipment, net	$ (800)			$ (24,800)

Summary of Significant Accou_25

Summary of Significant Accounting Policies - Other Expense (Income), Net - Foreign Currency Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounting Policies [Abstract]
Foreign currency transaction (gains) losses, net	$ (18,251)	$ 664	$ (19,885)	$ 3,825
Other, net	4,836	(339)	6,488	(2,405)
Other (Income) Expense, Net	$ (13,415)	$ 325	$ (13,397)	$ 1,420

Summary of Significant Accou_26

Summary of Significant Accounting Policies - Correction in Presentation (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Sep. 30, 2018
Accounting Policies [Abstract]
Gain on sale of real estate	$ 54,000	$ 1,300

Summary of Significant Accou_27

Summary of Significant Accounting Policies - Immaterial Restatement Narrative (Details) € in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2019EUR (€)	Sep. 30, 2018USD ($)	Jun. 30, 2018USD ($)
Error Corrections and Prior Period Adjustments Restatement [Line Items]
(Distributions in excess of earnings) Earnings in excess of distributions	$ (2,139,493)		$ (2,433,802)
Foreign | Tax and Customs Administration, Netherlands
Error Corrections and Prior Period Adjustments Restatement [Line Items]
VAT liability | €				€ 16,800
Selling, General and Administrative Expenses
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Overstated (understated) misstatement amount	(11,000)	$ (16,600)
Interest Expense
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Overstated (understated) misstatement amount	(400)	(100)
Provision for Income Taxes
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Overstated (understated) misstatement amount	2,000	3,000
Net Income from Continuing Operations
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Overstated (understated) misstatement amount	9,400	13,700
Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Retained earnings	23,100
(Distributions in excess of earnings) Earnings in excess of distributions	$ (23,126)	$ (13,708)			$ (22,852)	$ (21,573)

Summary of Significant Accou_28

Summary of Significant Accounting Policies - Immaterial Restatements (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Selling, general and administrative	$ 239,156	$ 259,929	$ 762,479	$ 789,324
Total Operating Expenses	838,750	865,356	2,607,730	2,610,058
Operating Income (Loss)	223,474	195,635	575,264	554,214
Interest Expense, Net	(106,677)	(103,938)	(314,427)	(303,836)
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	130,212	91,372	274,234	248,958
Provision (Benefit) for Income Taxes	21,928	14,023	43,127	39,957
Income (Loss) from Continuing Operations	108,284	77,349	231,107	209,001
Net Income (Loss)	108,284	65,744	231,211	196,574
Net Income (Loss) Attributable to Iron Mountain Incorporated	$ 107,675	$ 65,869	$ 229,677	$ 196,089
Income (Loss) from Continuing Operations (in dollars per share)	$ 0.37	$ 0.27	$ 0.80	$ 0.73
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)	0.37	0.23	0.80	0.69
Income (Loss) from Continuing Operations (in dollars per share)	0.37	0.27	0.80	0.73
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)	$ 0.37	$ 0.23	$ 0.80	$ 0.68
Total Other Assets, Net	$ 7,816,555		$ 7,816,555		$ 6,159,547
Total Assets	13,577,167	$ 11,810,870	13,577,167	$ 11,810,870	11,857,218
Accrued expenses and other current liabilities	888,021		888,021		780,781
Total Current Liabilities	1,830,111		1,830,111		1,490,775
(Distributions in excess of earnings) Earnings in excess of distributions	(2,433,802)		(2,433,802)		(2,139,493)
Total Iron Mountain Incorporated Stockholders' Equity	$ 1,510,830		$ 1,510,830		1,861,054
Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Selling, general and administrative		1,459		10,798
Total Operating Expenses		1,459		10,798
Operating Income (Loss)		(1,459)		(10,798)
Interest Expense, Net		97		262
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes		(1,556)		(11,060)
Provision (Benefit) for Income Taxes		(277)		(1,916)
Income (Loss) from Continuing Operations		(1,279)		(9,144)
Net Income (Loss)		(1,279)		(9,144)
Net Income (Loss) Attributable to Iron Mountain Incorporated		$ (1,279)		$ (9,144)
Income (Loss) from Continuing Operations (in dollars per share)		$ (0.01)		$ (0.03)
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)		0		(0.03)
Income (Loss) from Continuing Operations (in dollars per share)		0		(0.03)
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)		$ 0		$ (0.04)
Total Other Assets, Net					4,971
Total Assets					4,971
Accrued expenses and other current liabilities					28,097
Total Current Liabilities					28,097
(Distributions in excess of earnings) Earnings in excess of distributions		$ (22,852)		$ (22,852)	(23,126)	$ (21,573)	$ (13,708)
Total Iron Mountain Incorporated Stockholders' Equity					$ (23,126)

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities - Interest Rate Swap Agreements (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jul. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Unrealized gain (loss) on cash flow hedges	$ (1,496,000)	$ 1,980,000	$ (9,101,000)	$ 4,183,000
Interest rate swap agreements
Derivative [Line Items]
Notional amount	350,000,000		350,000,000		$ 350,000,000	$ 350,000,000
Unrealized gain (loss) on cash flow hedges	(3,468,000)	$ 1,980,000	(11,073,000)	$ 4,183,000
Cumulative net losses in AOCI	12,046,000		12,046,000
Other Long-Term Liabilities | Interest rate swap agreements
Derivative [Line Items]
Derivative liability	$ 12,046,000		$ 12,046,000			$ 973,000

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Net Investment Hedges (Details) - Net Investment Hedges - Cross-currency swap agreements € in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2019USD ($)	Aug. 31, 2019USD ($)	Aug. 31, 2019EUR (€)
Derivative [Line Items]
Notional amount			$ 110,000	€ 99,055
Interest rate			6.00%	6.00%
Weighted average interest rate			3.65%	3.65%
Unrealized gains	$ 1,972	$ 1,972
Other Assets, Net
Derivative [Line Items]
Derivative asset	$ 1,972	$ 1,972

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Hedge of Net Investment (Details) - Euro Notes - Net Investment Hedges - Designated as Hedging Instrument € in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019EUR (€)	Sep. 30, 2018EUR (€)
Derivative [Line Items]
Hedged notes | €					€ 279,821	€ 209,276
Foreign exchange gains (losses)	$ 13,101	$ 2,139	$ 14,962	$ 6,761
Cumulative net gains			$ 29,220

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities - Forward Currency Contracts (Details) - Foreign Exchange Currency Forward Contracts € in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018EUR (€)
Derivative [Line Items]
Losses on derivatives	$ 0	$ 616,000	$ 737,000	$ 4,172,000
Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	$ 0		$ 0
Not Designated as Hedging Instrument | Purchase
Derivative [Line Items]
Notional amount | €						€ 29,000
Not Designated as Hedging Instrument | Sell
Derivative [Line Items]
Notional amount					$ 33,374,000
Not Designated as Hedging Instrument | Prepaid expenses and other
Derivative [Line Items]
Derivative asset					$ 93,000

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) $ in Thousands	Jan. 10, 2018USD ($)	Feb. 28, 2019USD ($)	Sep. 30, 2019USD ($)company
Storage and Data Management Company
Business Acquisition [Line Items]
Number of businesses acquired | company			9
Art Storage Company
Business Acquisition [Line Items]
Number of businesses acquired | company			1
Storage, Records Management and Art Storage Companies
Business Acquisition [Line Items]
Cash consideration			$ 49,200
IO Data Center LLC
Business Acquisition [Line Items]
Consideration transferred	$ 1,347,000	$ 31,000
Business combination separately recognized transactions expenses and losses recognized, acquisition costs incurred to date			$ 28,064

Acquisitions - Schedule of Purc

Acquisitions - Schedule of Purchase Price Allocation (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Jan. 01, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Purchase Price Holdbacks and Other	$ 4,135	$ 27,919
Fair Value of Identifiable Assets Acquired:
Operating Lease Right-of-Use Assets	1,765,496		$ 1,825,721	$ 0
Operating Lease Liabilities	(1,626,907)		$ (1,685,771)	0
Goodwill Initially Recorded	4,421,995			$ 4,441,030
2019 Acquisitions
Business Acquisition [Line Items]
Cash Paid (gross of cash acquired)	51,456
Purchase Price Holdbacks and Other	4,135
Total Consideration	55,591
Fair Value of Identifiable Assets Acquired:
Cash	2,224
Accounts Receivable, Prepaid Expenses and Other Assets	3,228
Property, Plant and Equipment	5,320
Customer Relationship Intangible Assets	21,584
Operating Lease Right-of-Use Assets	16,956
Accounts Payable, Accrued Expenses and Other Liabilities	(2,716)
Operating Lease Liabilities	(16,956)
Deferred Income Taxes	(1,719)
Total Fair Value of Identifiable Net Assets Acquired	27,921
Goodwill Initially Recorded	27,670
Net cash acquired	2,224
Payments for previous acquisitions	$ 7,267

Acquisitions - Pro Forma Financ

Acquisitions - Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Business Combinations [Abstract]
Total Revenues	$ 1,060,991	$ 3,167,762
Income from Continuing Operations	$ 77,349	$ 218,953
Per Share Income from Continuing Operations - Basic (in dollars per share)	$ 0.27	$ 0.76
Per Share Income from Continuing Operations - Diluted (in dollars per share)	$ 0.27	$ 0.76

Debt - Schedule of Long Term De

Debt - Schedule of Long Term Debt (Details) € in Thousands, $ in Thousands, $ in Thousands	1 Months Ended
	Sep. 22, 2019USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2019EUR (€)	Sep. 30, 2019AUD ($)	Sep. 30, 2019CAD ($)	Dec. 31, 2018USD ($)	Mar. 22, 2018USD ($)
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 8,704,642,000				$ 8,229,430,000
Long-term debt, gross, current maturities		(394,822,000)				(126,406,000)
Long term debt, gross, net of current portion		8,309,820,000				8,103,024,000
Unamortized Deferred Financing Costs		(89,473,000)				(86,607,000)
Unamortized debt issuance expense, current		0				0
Unamortized debt issuance expense, net		(89,473,000)				(86,607,000)
Carrying Amount		8,615,169,000				8,142,823,000
Carrying Amount, current maturities		(394,822,000)				(126,406,000)
Carrying Amount, excluding current maturities		8,220,347,000				8,016,417,000
Revolving Credit Facility
Debt Instrument [Line Items]
Letters of credit outstanding		16,843,000
Remaining capacity		1,378,278,000
Australian Dollar Term Loan
Debt Instrument [Line Items]
Debt (inclusive of discount)		219,871,000				233,955,000
Unamortized Deferred Financing Costs		(2,389,000)				(3,084,000)
Carrying Amount		217,482,000		$ 327,500		230,871,000
Fair Value		$ 221,165,000				235,645,000
Average interest rate (as a percent)		4.90%	4.90%	4.90%	4.90%
Debt instrument, unamortized discount		$ 1,294,000				1,690,000
Senior Notes 4.375 Percent due 2021
Debt Instrument [Line Items]
Debt (inclusive of discount)		500,000,000				500,000,000
Unamortized Deferred Financing Costs		(2,866,000)				(4,155,000)
Carrying Amount		497,134,000				495,845,000
Fair Value		$ 503,750,000				488,750,000
Stated interest rate (as a percent)		4.375%	4.375%	4.375%	4.375%
Senior Notes 6% percent due 2023
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 600,000,000				600,000,000
Unamortized Deferred Financing Costs		(4,302,000)				(5,126,000)
Carrying Amount		595,698,000				594,874,000
Fair Value		$ 615,000,000				606,000,000
Stated interest rate (as a percent)		6.00%	6.00%	6.00%	6.00%
CAD Senior Notes 5.375 Percent due 2023
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 188,811,000				183,403,000
Unamortized Deferred Financing Costs		(2,173,000)				(2,506,000)
Carrying Amount		186,638,000				180,897,000
Fair Value		$ 194,475,000				186,154,000
Stated interest rate (as a percent)		5.375%	5.375%	5.375%	5.375%
Senior Subordinated Notes 5 3/4% percent due 2024
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 1,000,000,000				1,000,000,000
Unamortized Deferred Financing Costs		(6,752,000)				(7,782,000)
Carrying Amount		993,248,000				992,218,000
Fair Value		$ 1,010,000,000				940,000,000
Stated interest rate (as a percent)		5.75%	5.75%	5.75%	5.75%
Euro Senior Notes 3 Percent due 2025
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 327,508,000				343,347,000
Unamortized Deferred Financing Costs		(3,622,000)				(4,098,000)
Carrying Amount		323,886,000				339,249,000
Fair Value		$ 334,877,000				321,029,000
Stated interest rate (as a percent)		3.00%	3.00%	3.00%	3.00%
GBP Senior Notes due 2025 3.875 Percent
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 491,943,000				509,425,000
Unamortized Deferred Financing Costs		(5,651,000)				(6,573,000)
Carrying Amount		486,292,000				502,852,000
Fair Value		$ 493,173,000				453,811,000
Stated interest rate (as a percent)		3.875%	3.875%	3.875%	3.875%
Senior Notes 5.375 Percent due 2026
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 250,000,000				250,000,000
Unamortized Deferred Financing Costs		(2,863,000)				(3,185,000)
Carrying Amount		247,137,000				246,815,000
Fair Value		$ 257,500,000				224,375,000
Stated interest rate (as a percent)		5.375%	5.375%	5.375%	5.375%
Senior Notes 4.875 Percent due 2027
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 1,000,000,000				1,000,000,000
Unamortized Deferred Financing Costs		(11,375,000)				(12,442,000)
Carrying Amount		988,625,000				987,558,000
Fair Value		$ 1,022,500,000				855,000,000
Stated interest rate (as a percent)		4.875%	4.875%	4.875%	4.875%
Senior Notes 5.25 Percent due 2028
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 825,000,000				825,000,000
Unamortized Deferred Financing Costs		(10,037,000)				(10,923,000)
Carrying Amount		814,963,000				814,077,000
Fair Value		$ 852,844,000				713,625,000
Stated interest rate (as a percent)		5.25%	5.25%	5.25%	5.25%
Senior Notes 4.875 Percent due 2029
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 1,000,000,000				0
Unamortized Deferred Financing Costs		(14,451,000)				0
Carrying Amount		985,549,000				0
Fair Value		$ 1,015,000,000				0
Stated interest rate (as a percent)		4.875%	4.875%	4.875%	4.875%
Principal amount		$ 1,000,000,000
Net proceeds	$ 987,500,000
Real Estate Mortgages, Capital Leases and Other
Debt Instrument [Line Items]
Debt (inclusive of discount)		533,549,000				606,702,000
Unamortized Deferred Financing Costs		(444,000)				(171,000)
Carrying Amount		533,105,000				606,531,000
Fair Value		533,549,000				606,702,000
Accounts Receivable Securitization Program
Debt Instrument [Line Items]
Debt (inclusive of discount)		271,562,000				221,673,000
Unamortized Deferred Financing Costs		(115,000)				(218,000)
Carrying Amount		271,447,000				221,455,000
Fair Value		$ 271,562,000				221,673,000
Average interest rate (as a percent)		3.10%	3.10%	3.10%	3.10%
Mortgage Securitization Program
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 50,000,000				50,000,000
Unamortized Deferred Financing Costs		(1,019,000)				(1,128,000)
Carrying Amount		48,981,000				48,872,000
Fair Value		$ 50,000,000				50,000,000
Average interest rate (as a percent)		3.50%	3.50%	3.50%	3.50%
New Credit Agreement
Debt Instrument [Line Items]
Average interest rate (as a percent)		3.50%	3.50%	3.50%	3.50%
New Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 354,879,000				793,832,000
Unamortized Deferred Financing Costs		(11,763,000)				(14,117,000)
Carrying Amount		343,116,000				779,715,000
Fair Value		$ 354,879,000				793,832,000
Average interest rate (as a percent)		3.30%	3.30%	3.30%	3.30%
Term Loan A | Term Loan Facility
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 231,250,000				240,625,000
Unamortized Deferred Financing Costs		0				0
Carrying Amount		231,250,000				240,625,000
Fair Value		$ 231,250,000				240,625,000
Average interest rate (as a percent)		3.80%	3.80%	3.80%	3.80%
Term Loan B | Term Loan Facility
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 688,089,000				693,169,000
Unamortized Deferred Financing Costs		(7,806,000)				(8,742,000)
Carrying Amount		680,283,000				684,427,000
Fair Value		$ 688,638,000				660,013,000
Average interest rate (as a percent)		3.80%	3.80%	3.80%	3.80%
Debt instrument, unamortized discount		$ 1,411,000				1,581,000
UK Bilateral Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Debt (inclusive of discount)		172,180,000				178,299,000
Unamortized Deferred Financing Costs		(1,845,000)				(2,357,000)
Carrying Amount		170,335,000				175,942,000
Fair Value		$ 172,180,000				$ 178,299,000
Line of credit facility, interest rate at period end		3.00%	3.00%	3.00%	3.00%
Term Loan Facility | Term Loan B | Loans Payable
Debt Instrument [Line Items]
Maximum borrowing capacity							$ 700,000,000
US Dollars | New Credit Agreement | Term Loan Facility
Debt Instrument [Line Items]
Debt (inclusive of discount)		$ 221,900,000
Canadian dollars | New Credit Agreement | Term Loan Facility
Debt Instrument [Line Items]
Debt (inclusive of discount)					$ 72,000
Euro | New Credit Agreement | Term Loan Facility
Debt Instrument [Line Items]
Debt (inclusive of discount) | €			€ 72,000

Debt - Cash Pool (Details)

Debt - Cash Pool (Details) $ in Thousands	Sep. 30, 2019USD ($)cash_pool	Dec. 31, 2018USD ($)
Debt Instrument [Line Items]
Number of cash pools | cash_pool	2
QRS Cash Pool
Debt Instrument [Line Items]
Number of cash pools | cash_pool	1
Gross Cash Position	$ 358,200	$ 300,800
Outstanding Debit Balances	(355,800)	(298,800)
Net Cash Position	$ 2,400	2,000
TRS Cash Pool
Debt Instrument [Line Items]
Number of cash pools | cash_pool	1
Gross Cash Position	$ 302,200	281,500
Outstanding Debit Balances	(296,300)	(279,300)
Net Cash Position	$ 5,900	$ 2,200

Debt - Covenant Ratios (Details

Debt - Covenant Ratios (Details) $ in Thousands	Sep. 30, 2019USD ($)	Dec. 31, 2018
Credit Agreement
Debt Instrument [Line Items]
Letters of credit outstanding	$ 35,241
Net total lease adjusted leverage ratio	5.8	5.6
Net secured debt lease adjusted leverage ratio	2.3	2.6
Bond leverage ratio (not lease adjusted)	6.1	5.8
Fixed charge coverage ratio	2.1	2.2
Credit Agreement | Maximum
Debt Instrument [Line Items]
Net total lease adjusted leverage ratio	6.5
Net secured debt lease adjusted leverage ratio	4
Bond leverage ratio (not lease adjusted)	7
Credit Agreement | Minimum
Debt Instrument [Line Items]
Bond leverage ratio (not lease adjusted)	6.5
Fixed charge coverage ratio	1.5
Revolving Credit Facility
Debt Instrument [Line Items]
Letters of credit outstanding	$ 16,843
Senior Notes | Maximum
Debt Instrument [Line Items]
Bond leverage ratio (not lease adjusted)	6.5
Senior Notes 4.875 Percent due 2029, Senior Notes 4.875 Percent due 2027, GBP Notes due 2025 and 5.25 Percent Notes
Debt Instrument [Line Items]
Debt instrument covenant, indenture, leverage ratio maximum	7

Selected Consolidated Financi_3

Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors - Narrative (Details) - 5.375% Senior Notes	Sep. 30, 2019
Guarantors
Debt Instrument [Line Items]
Stated interest rate (as a percent)	5.375%
Non- Guarantors
Debt Instrument [Line Items]
Stated interest rate (as a percent)	5.375%

Selected Consolidated Financi_4

Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors - Balance Sheets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 186,778			$ 165,485
Accounts receivable	821,926			846,889
Intercompany receivable	0			0
Prepaid expenses and other	195,189			195,740
Total Current Assets	1,203,893			1,208,114
Property, Plant and Equipment, Net	4,556,719			4,489,557
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	0			0
Investment in subsidiaries	0			0
Goodwill	4,421,995			4,441,030
Operating lease right-of-use assets (see Note 2.d.)	1,765,496		$ 1,825,721	0
Other	1,629,064			1,718,517
Total Other Assets, Net	7,816,555			6,159,547
Total Assets	13,577,167			11,857,218	$ 11,810,870
Liabilities and Equity
Intercompany Payable	0			0
Debit Balances Under Cash Pools	0			0
Current Portion of Long-Term Debt	394,822			126,406
Total Other Current Liabilities (includes current portion of operating lease liabilities)	1,435,289			1,364,369
Long-Term Debt, Net of Current Portion	8,220,347			8,016,417
Long-Term Operating Lease Liabilities, Net of Current Portion	1,626,907		$ 1,685,771	0
Long-Term Notes Payable to Affiliates and Intercompany Payable	0			0
Other Long-term Liabilities	319,854			417,031
Commitments and Contingencies (See Note 8)
Redeemable Noncontrolling Interests	68,099			70,532
Total Iron Mountain Incorporated Stockholders' Equity	1,510,830			1,861,054
Noncontrolling Interests	1,019			1,409
Total Equity	1,511,849	$ 1,658,981		1,862,463	$ 1,916,024	$ 2,035,874	$ 2,285,134
Total Liabilities and Equity	13,577,167			11,857,218
Eliminations
Current Assets:
Cash and cash equivalents	(133,027)			(67,372)
Accounts receivable	0			0
Intercompany receivable	(456,222)			(821,324)
Prepaid expenses and other	(29)			(29)
Total Current Assets	(589,278)			(888,725)
Property, Plant and Equipment, Net	0			0
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	(5,180,133)			(4,954,686)
Investment in subsidiaries	(2,992,063)			(2,845,066)
Goodwill	0			0
Operating lease right-of-use assets (see Note 2.d.)	0
Other	0			0
Total Other Assets, Net	(8,172,196)			(7,799,752)
Total Assets	(8,761,474)			(8,688,477)
Liabilities and Equity
Intercompany Payable	(456,222)			(821,324)
Debit Balances Under Cash Pools	(133,027)			(67,372)
Current Portion of Long-Term Debt	(29)			(29)
Total Other Current Liabilities (includes current portion of operating lease liabilities)	0			0
Long-Term Debt, Net of Current Portion	0			0
Long-Term Operating Lease Liabilities, Net of Current Portion	0
Long-Term Notes Payable to Affiliates and Intercompany Payable	(5,180,133)			(4,954,686)
Other Long-term Liabilities	0			0
Commitments and Contingencies (See Note 8)
Redeemable Noncontrolling Interests	0			0
Total Iron Mountain Incorporated Stockholders' Equity	(2,992,063)			(2,845,066)
Noncontrolling Interests	0			0
Total Equity	(2,992,063)			(2,845,066)
Total Liabilities and Equity	(8,761,474)			(8,688,477)
Parent | Reportable legal entities
Current Assets:
Cash and cash equivalents	10			132
Accounts receivable	0			0
Intercompany receivable	0			0
Prepaid expenses and other	0			93
Total Current Assets	10			225
Property, Plant and Equipment, Net	122			190
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	5,180,133			4,954,686
Investment in subsidiaries	1,940,454			1,862,048
Goodwill	0			0
Operating lease right-of-use assets (see Note 2.d.)	0
Other	1,972			0
Total Other Assets, Net	7,122,559			6,816,734
Total Assets	7,122,691			6,817,149
Liabilities and Equity
Intercompany Payable	167,220			462,927
Debit Balances Under Cash Pools	0			0
Current Portion of Long-Term Debt	0			0
Total Other Current Liabilities (includes current portion of operating lease liabilities)	233,492			268,373
Long-Term Debt, Net of Current Portion	5,199,103			4,223,822
Long-Term Operating Lease Liabilities, Net of Current Portion	0
Long-Term Notes Payable to Affiliates and Intercompany Payable	0			0
Other Long-term Liabilities	12,046			973
Commitments and Contingencies (See Note 8)
Redeemable Noncontrolling Interests	0			0
Total Iron Mountain Incorporated Stockholders' Equity	1,510,830			1,861,054
Noncontrolling Interests	0			0
Total Equity	1,510,830			1,861,054
Total Liabilities and Equity	7,122,691			6,817,149
Guarantors
Current Assets:
Deposits	141,300			58,900
Guarantors | Reportable legal entities
Current Assets:
Cash and cash equivalents	157,771			63,407
Accounts receivable	58,400			47,472
Intercompany receivable	456,222			821,324
Prepaid expenses and other	96,737			109,480
Total Current Assets	769,130			1,041,683
Property, Plant and Equipment, Net	3,049,090			3,010,767
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	0			0
Investment in subsidiaries	1,051,609			983,018
Goodwill	2,853,466			2,861,381
Operating lease right-of-use assets (see Note 2.d.)	939,631
Other	945,025			982,932
Total Other Assets, Net	5,789,731			4,827,331
Total Assets	9,607,951			8,879,781
Liabilities and Equity
Intercompany Payable	0			0
Debit Balances Under Cash Pools	0			10,612
Current Portion of Long-Term Debt	54,028			63,859
Total Other Current Liabilities (includes current portion of operating lease liabilities)	685,486			618,513
Long-Term Debt, Net of Current Portion	1,457,499			1,878,079
Long-Term Operating Lease Liabilities, Net of Current Portion	871,377
Long-Term Notes Payable to Affiliates and Intercompany Payable	5,180,133			4,954,686
Other Long-term Liabilities	52,842			116,895
Commitments and Contingencies (See Note 8)
Redeemable Noncontrolling Interests	0			0
Total Iron Mountain Incorporated Stockholders' Equity	1,306,586			1,237,137
Noncontrolling Interests	0			0
Total Equity	1,306,586			1,237,137
Total Liabilities and Equity	9,607,951			8,879,781
Non- Guarantors
Current Assets:
Deposits	0			12,700
Non- Guarantors | Reportable legal entities
Current Assets:
Cash and cash equivalents	162,024			169,318
Accounts receivable	763,526			799,417
Intercompany receivable	0			0
Prepaid expenses and other	98,481			86,196
Total Current Assets	1,024,031			1,054,931
Property, Plant and Equipment, Net	1,507,507			1,478,600
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	0			0
Investment in subsidiaries	0			0
Goodwill	1,568,529			1,579,649
Operating lease right-of-use assets (see Note 2.d.)	825,865
Other	682,067			735,585
Total Other Assets, Net	3,076,461			2,315,234
Total Assets	5,607,999			4,848,765
Liabilities and Equity
Intercompany Payable	289,002			358,397
Debit Balances Under Cash Pools	133,027			56,760
Current Portion of Long-Term Debt	340,823			62,576
Total Other Current Liabilities (includes current portion of operating lease liabilities)	516,311			477,483
Long-Term Debt, Net of Current Portion	1,563,745			1,914,516
Long-Term Operating Lease Liabilities, Net of Current Portion	755,530
Long-Term Notes Payable to Affiliates and Intercompany Payable	0			0
Other Long-term Liabilities	254,966			299,163
Commitments and Contingencies (See Note 8)
Redeemable Noncontrolling Interests	68,099			70,532
Total Iron Mountain Incorporated Stockholders' Equity	1,685,477			1,607,929
Noncontrolling Interests	1,019			1,409
Total Equity	1,686,496			1,609,338
Total Liabilities and Equity	$ 5,607,999			$ 4,848,765

Selected Consolidated Financi_5

Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors - Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Consolidating financial statements
Revenues	$ 1,062,224	$ 1,060,991	$ 3,182,994	$ 3,164,272
Intercompany revenues	0	0	0	0
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	451,317	448,018	1,377,963	1,348,203
Intercompany	0	0	0	0
Selling, general and administrative	239,156	259,929	762,479	789,324
Depreciation and amortization	157,561	157,797	484,375	474,595
(Gain) Loss on disposal/write-down of property, plant and equipment, net	(9,284)	(388)	(17,087)	(2,064)
Total Operating Expenses	838,750	865,356	2,607,730	2,610,058
Operating Income (Loss)	223,474	195,635	575,264	554,214
Interest Expense (Income), Net	106,677	103,938	314,427	303,836
Other (Income) Expense, Net	(13,415)	325	(13,397)	1,420
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	130,212	91,372	274,234	248,958
Provision (Benefit) for Income Taxes	21,928	14,023	43,127	39,957
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	0	0	0	0
Income (Loss) from Continuing Operations	108,284	77,349	231,107	209,001
Income (Loss) from Discontinued Operations, Net of Tax	0	(11,605)	104	(12,427)
Net Income (Loss)	108,284	65,744	231,211	196,574
Less: Net Income (Loss) Attributable to Noncontrolling Interests	609	(125)	1,534	485
Net Income (Loss) Attributable to Iron Mountain Incorporated	107,675	65,869	229,677	196,089
Net Income (Loss)	108,284	65,744	231,211	196,574
Other Comprehensive (Loss) Income:
Foreign Currency Translation Adjustment	(83,595)	(24,769)	(71,195)	(132,290)
Change in Fair Value of Derivative Instruments	(1,496)	1,980	(9,101)	4,183
Equity in Other Comprehensive (Loss) Income of Subsidiaries	0	0	0	0
Total Other Comprehensive (Loss) Income	(85,091)	(22,789)	(80,296)	(128,107)
Comprehensive Income (Loss)	23,193	42,955	150,915	68,467
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	(100)	(2,104)	1,777	(3,351)
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	23,293	45,059	149,138	71,818
Eliminations
Consolidating financial statements
Revenues	(6,804)	(5,522)	(18,579)	(16,739)
Intercompany revenues	(6,804)	(5,522)	(18,579)	(16,739)
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	0	0	0	0
Intercompany	(6,804)	(5,522)	(18,579)	(16,739)
Selling, general and administrative	0	0	0	0
Depreciation and amortization	0	0	0	0
(Gain) Loss on disposal/write-down of property, plant and equipment, net	0	0	0	0
Total Operating Expenses	(6,804)	(5,522)	(18,579)	(16,739)
Operating Income (Loss)	0	0	0	0
Interest Expense (Income), Net	0	0	0	0
Other (Income) Expense, Net	0	0	0	0
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	0	0	0	0
Provision (Benefit) for Income Taxes	0	0	0	0
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	205,774	141,290	493,289	402,499
Income (Loss) from Continuing Operations	(205,774)	(141,290)	(493,289)	(402,499)
Income (Loss) from Discontinued Operations, Net of Tax	0	0	0	0
Net Income (Loss)	(205,774)	(141,290)	(493,289)	(402,499)
Less: Net Income (Loss) Attributable to Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Iron Mountain Incorporated	(205,774)	(141,290)	(493,289)	(402,499)
Net Income (Loss)	(205,774)	(141,290)	(493,289)	(402,499)
Other Comprehensive (Loss) Income:
Foreign Currency Translation Adjustment	0	0	0	0
Change in Fair Value of Derivative Instruments	0	0	0	0
Equity in Other Comprehensive (Loss) Income of Subsidiaries	177,122	39,372	159,258	241,182
Total Other Comprehensive (Loss) Income	177,122	39,372	159,258	241,182
Comprehensive Income (Loss)	(28,652)	(101,918)	(334,031)	(161,317)
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	0	0	0	0
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	(28,652)	(101,918)	(334,031)	(161,317)
Parent | Reportable legal entities
Consolidating financial statements
Revenues	0	0	0	0
Intercompany revenues	0	0	0	0
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	0	0	0	0
Intercompany	0	0	0	0
Selling, general and administrative	161	(427)	310	(348)
Depreciation and amortization	23	31	68	96
(Gain) Loss on disposal/write-down of property, plant and equipment, net	0	0	0	0
Total Operating Expenses	184	(396)	378	(252)
Operating Income (Loss)	(184)	396	(378)	252
Interest Expense (Income), Net	52,166	49,964	151,392	150,218
Other (Income) Expense, Net	(596)	439	(55)	2,049
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	(51,754)	(50,007)	(151,715)	(152,015)
Provision (Benefit) for Income Taxes	0	0	0	0
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(159,429)	(115,876)	(381,392)	(348,104)
Income (Loss) from Continuing Operations	107,675	65,869	229,677	196,089
Income (Loss) from Discontinued Operations, Net of Tax	0	0	0	0
Net Income (Loss)	107,675	65,869	229,677	196,089
Less: Net Income (Loss) Attributable to Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Iron Mountain Incorporated	107,675	65,869	229,677	196,089
Net Income (Loss)	107,675	65,869	229,677	196,089
Other Comprehensive (Loss) Income:
Foreign Currency Translation Adjustment	13,101	2,139	14,962	6,761
Change in Fair Value of Derivative Instruments	(1,496)	1,980	(9,101)	4,183
Equity in Other Comprehensive (Loss) Income of Subsidiaries	(95,987)	(24,929)	(86,400)	(135,215)
Total Other Comprehensive (Loss) Income	(84,382)	(20,810)	(80,539)	(124,271)
Comprehensive Income (Loss)	23,293	45,059	149,138	71,818
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	0	0	0	0
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	23,293	45,059	149,138	71,818
Guarantors | Reportable legal entities
Consolidating financial statements
Revenues	663,724	656,060	1,972,085	1,931,563
Intercompany revenues	1,173	1,192	3,485	3,613
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	262,183	254,068	788,864	753,837
Intercompany	5,631	4,330	15,094	13,126
Selling, general and administrative	162,052	177,777	523,844	531,507
Depreciation and amortization	100,023	100,210	308,284	299,372
(Gain) Loss on disposal/write-down of property, plant and equipment, net	(8,922)	(1,669)	18,436	(2,491)
Total Operating Expenses	520,967	534,716	1,654,522	1,595,351
Operating Income (Loss)	142,757	121,344	317,563	336,212
Interest Expense (Income), Net	6,074	3,151	19,128	4,863
Other (Income) Expense, Net	11,577	4,155	16,636	12,323
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	125,106	114,038	281,799	319,026
Provision (Benefit) for Income Taxes	12,814	9,012	15,268	14,810
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	(46,345)	(25,414)	(111,897)	(54,395)
Income (Loss) from Continuing Operations	158,637	130,440	378,428	358,611
Income (Loss) from Discontinued Operations, Net of Tax	0	(11,588)	120	(12,283)
Net Income (Loss)	158,637	118,852	378,548	346,328
Less: Net Income (Loss) Attributable to Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Iron Mountain Incorporated	158,637	118,852	378,548	346,328
Net Income (Loss)	158,637	118,852	378,548	346,328
Other Comprehensive (Loss) Income:
Foreign Currency Translation Adjustment	0	0	0	0
Change in Fair Value of Derivative Instruments	0	0	0	0
Equity in Other Comprehensive (Loss) Income of Subsidiaries	(81,135)	(14,443)	(72,858)	(105,967)
Total Other Comprehensive (Loss) Income	(81,135)	(14,443)	(72,858)	(105,967)
Comprehensive Income (Loss)	77,502	104,409	305,690	240,361
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	0	0	0	0
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	77,502	104,409	305,690	240,361
Non- Guarantors | Reportable legal entities
Consolidating financial statements
Revenues	405,304	410,453	1,229,488	1,249,448
Intercompany revenues	5,631	4,330	15,094	13,126
Operating Expenses:
Cost of sales (excluding depreciation and amortization)	189,134	193,950	589,099	594,366
Intercompany	1,173	1,192	3,485	3,613
Selling, general and administrative	76,943	82,579	238,325	258,165
Depreciation and amortization	57,515	57,556	176,023	175,127
(Gain) Loss on disposal/write-down of property, plant and equipment, net	(362)	1,281	(35,523)	427
Total Operating Expenses	324,403	336,558	971,409	1,031,698
Operating Income (Loss)	80,901	73,895	258,079	217,750
Interest Expense (Income), Net	48,437	50,823	143,907	148,755
Other (Income) Expense, Net	(24,396)	(4,269)	(29,978)	(12,952)
(Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes	56,860	27,341	144,150	81,947
Provision (Benefit) for Income Taxes	9,114	5,011	27,859	25,147
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax	0	0	0	0
Income (Loss) from Continuing Operations	47,746	22,330	116,291	56,800
Income (Loss) from Discontinued Operations, Net of Tax	0	(17)	(16)	(144)
Net Income (Loss)	47,746	22,313	116,275	56,656
Less: Net Income (Loss) Attributable to Noncontrolling Interests	609	(125)	1,534	485
Net Income (Loss) Attributable to Iron Mountain Incorporated	47,137	22,438	114,741	56,171
Net Income (Loss)	47,746	22,313	116,275	56,656
Other Comprehensive (Loss) Income:
Foreign Currency Translation Adjustment	(96,696)	(26,908)	(86,157)	(139,051)
Change in Fair Value of Derivative Instruments	0	0	0	0
Equity in Other Comprehensive (Loss) Income of Subsidiaries	0	0	0	0
Total Other Comprehensive (Loss) Income	(96,696)	(26,908)	(86,157)	(139,051)
Comprehensive Income (Loss)	(48,950)	(4,595)	30,118	(82,395)
Comprehensive (Loss) Income Attributable to Noncontrolling Interests	(100)	(2,104)	1,777	(3,351)
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated	(48,850)	(2,491)	28,341	(79,044)
Storage rental
Consolidating financial statements
Revenues	673,318	656,973	2,005,580	1,963,561
Storage rental | Eliminations
Consolidating financial statements
Revenues	0	0	0	0
Storage rental | Parent | Reportable legal entities
Consolidating financial statements
Revenues	0	0	0	0
Storage rental | Guarantors | Reportable legal entities
Consolidating financial statements
Revenues	416,967	404,397	1,235,353	1,201,035
Storage rental | Non- Guarantors | Reportable legal entities
Consolidating financial statements
Revenues	256,351	252,576	770,227	762,526
Service
Consolidating financial statements
Revenues	388,906	404,018	1,177,414	1,200,711
Service | Eliminations
Consolidating financial statements
Revenues	0	0	0	0
Service | Parent | Reportable legal entities
Consolidating financial statements
Revenues	0	0	0	0
Service | Guarantors | Reportable legal entities
Consolidating financial statements
Revenues	245,584	250,471	733,247	726,915
Service | Non- Guarantors | Reportable legal entities
Consolidating financial statements
Revenues	$ 143,322	$ 153,547	$ 444,167	$ 473,796

Selected Consolidated Financi_6

Selected Consolidated Financial Statements of Parent, Guarantors and Non-Guarantors - Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations			$ 648,145	$ 625,538
Cash Flows from Operating Activities—Discontinued Operations			0	(995)
Cash Flows from Operating Activities			648,145	624,543
Cash Flows from Investing Activities:
Capital expenditures	$ (166,483)	$ (112,352)	(533,614)	(329,953)
Cash paid for acquisitions, net of cash acquired	(11,848)	(44,142)	(56,499)	(1,711,011)
Intercompany loans to subsidiaries			0	0
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles	(22,947)	(26,328)	(113,509)	(63,561)
Net proceeds from Divestments			0	1,019
Investments in joint ventures (see Note 10)			(19,222)	0
Proceeds from sales of property and equipment and other, net			82,148	713
Cash Flows from Investing Activities—Continuing Operations			(640,696)	(2,102,793)
Cash Flows from Investing Activities—Discontinued Operations			5,061	0
Cash Flows from Investing Activities			(635,635)	(2,102,793)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt			(12,690,691)	(11,226,171)
Proceeds from revolving credit facility, term loan facilities and other debt			12,256,276	12,437,017
Net proceeds from sales of senior notes			987,500	0
Debit (payments) balances under cash pools			0	0
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net			(1,464)	(2,035)
Intercompany loans from parent			0	0
Parent cash dividends			(528,908)	(505,403)
Net (payments) proceeds associated with employee stock-based awards			(2,059)	(2,800)
Net proceeds associated with the Over-Allotment Option			0	76,192
Net proceeds associated with the At the Market (ATM) Program			0	8,716
Payment of debt financing and stock issuance costs			(769)	(15,957)
Cash Flows from Financing Activities - Continuing Operations			19,885	769,559
Cash Flows from Financing Activities - Discontinued Operations			0	0
Cash Flows from Financing Activities			19,885	769,559
Effect of Exchange Rates on Cash and Cash Equivalents			(11,102)	(19,332)
Increase (decrease) in Cash and Cash Equivalents			21,293	(728,023)
Cash and Cash Equivalents, including Restricted Cash, Beginning of Period			165,485	925,699
Cash and Cash Equivalents, including Restricted Cash, End of Period	186,778	197,676	186,778	197,676
Eliminations
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations			0	0
Cash Flows from Operating Activities—Discontinued Operations			0	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			288,598	(606,826)
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles			0	0
Net proceeds from Divestments				0
Investments in joint ventures (see Note 10)			0
Proceeds from sales of property and equipment and other, net			0	0
Cash Flows from Investing Activities—Continuing Operations			288,598	(606,826)
Cash Flows from Investing Activities—Discontinued Operations			0	0
Cash Flows from Investing Activities			288,598	(606,826)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt			0	0
Proceeds from revolving credit facility, term loan facilities and other debt			0	0
Net proceeds from sales of senior notes			0
Debit (payments) balances under cash pools			(65,655)	1,221
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net			0	0
Intercompany loans from parent			(288,598)	606,826
Parent cash dividends			0	0
Net (payments) proceeds associated with employee stock-based awards			0	0
Net proceeds associated with the Over-Allotment Option				0
Net proceeds associated with the At the Market (ATM) Program				0
Payment of debt financing and stock issuance costs			0	0
Cash Flows from Financing Activities - Continuing Operations			(354,253)	608,047
Cash Flows from Financing Activities - Discontinued Operations			0	0
Cash Flows from Financing Activities			(354,253)	608,047
Effect of Exchange Rates on Cash and Cash Equivalents			0	0
Increase (decrease) in Cash and Cash Equivalents			(65,655)	1,221
Cash and Cash Equivalents, including Restricted Cash, Beginning of Period			(67,372)	(94,726)
Cash and Cash Equivalents, including Restricted Cash, End of Period	(133,027)	(93,505)	(133,027)	(93,505)
Parent | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations			(161,288)	(208,384)
Cash Flows from Operating Activities—Discontinued Operations			0	0
Cash Flows from Operating Activities			(161,288)	(208,384)
Cash Flows from Investing Activities:
Capital expenditures			0	0
Cash paid for acquisitions, net of cash acquired			0	0
Intercompany loans to subsidiaries			(295,124)	629,918
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles			0	0
Net proceeds from Divestments				0
Investments in joint ventures (see Note 10)			0
Proceeds from sales of property and equipment and other, net			0	0
Cash Flows from Investing Activities—Continuing Operations			(295,124)	629,918
Cash Flows from Investing Activities—Discontinued Operations			0	0
Cash Flows from Investing Activities			(295,124)	629,918
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt			0	0
Proceeds from revolving credit facility, term loan facilities and other debt			0	0
Net proceeds from sales of senior notes			987,500
Debit (payments) balances under cash pools			0	0
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net			0	0
Intercompany loans from parent			0	0
Parent cash dividends			(528,908)	(505,403)
Net (payments) proceeds associated with employee stock-based awards			(2,059)	(2,800)
Net proceeds associated with the Over-Allotment Option				76,192
Net proceeds associated with the At the Market (ATM) Program				8,716
Payment of debt financing and stock issuance costs			(243)	(412)
Cash Flows from Financing Activities - Continuing Operations			456,290	(423,707)
Cash Flows from Financing Activities - Discontinued Operations			0	0
Cash Flows from Financing Activities			456,290	(423,707)
Effect of Exchange Rates on Cash and Cash Equivalents			0	0
Increase (decrease) in Cash and Cash Equivalents			(122)	(2,173)
Cash and Cash Equivalents, including Restricted Cash, Beginning of Period			132	2,433
Cash and Cash Equivalents, including Restricted Cash, End of Period	10	260	10	260
Guarantors | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations			596,529	644,493
Cash Flows from Operating Activities—Discontinued Operations			0	(995)
Cash Flows from Operating Activities			596,529	643,498
Cash Flows from Investing Activities:
Capital expenditures			(306,567)	(224,594)
Cash paid for acquisitions, net of cash acquired			(9,508)	(1,332,235)
Intercompany loans to subsidiaries			6,526	(23,092)
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles			(86,052)	(47,531)
Net proceeds from Divestments				1,019
Investments in joint ventures (see Note 10)			(19,222)
Proceeds from sales of property and equipment and other, net			33,031	283
Cash Flows from Investing Activities—Continuing Operations			(381,792)	(1,626,150)
Cash Flows from Investing Activities—Discontinued Operations			2,564	0
Cash Flows from Investing Activities			(379,228)	(1,626,150)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt			(9,507,136)	(5,386,024)
Proceeds from revolving credit facility, term loan facilities and other debt			9,068,245	6,456,050
Net proceeds from sales of senior notes			0
Debit (payments) balances under cash pools			(10,612)	(832)
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net			0	0
Intercompany loans from parent			326,566	(664,591)
Parent cash dividends			0	0
Net (payments) proceeds associated with employee stock-based awards			0	0
Net proceeds associated with the Over-Allotment Option				0
Net proceeds associated with the At the Market (ATM) Program				0
Payment of debt financing and stock issuance costs			0	(12,388)
Cash Flows from Financing Activities - Continuing Operations			(122,937)	392,215
Cash Flows from Financing Activities - Discontinued Operations			0	0
Cash Flows from Financing Activities			(122,937)	392,215
Effect of Exchange Rates on Cash and Cash Equivalents			0	0
Increase (decrease) in Cash and Cash Equivalents			94,364	(590,437)
Cash and Cash Equivalents, including Restricted Cash, Beginning of Period			63,407	642,408
Cash and Cash Equivalents, including Restricted Cash, End of Period	157,771	51,971	157,771	51,971
Non- Guarantors | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities—Continuing Operations			212,904	189,429
Cash Flows from Operating Activities—Discontinued Operations			0	0
Cash Flows from Operating Activities			212,904	189,429
Cash Flows from Investing Activities:
Capital expenditures			(227,047)	(105,359)
Cash paid for acquisitions, net of cash acquired			(46,991)	(378,776)
Intercompany loans to subsidiaries			0	0
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles			(27,457)	(16,030)
Net proceeds from Divestments				0
Investments in joint ventures (see Note 10)			0
Proceeds from sales of property and equipment and other, net			49,117	430
Cash Flows from Investing Activities—Continuing Operations			(252,378)	(499,735)
Cash Flows from Investing Activities—Discontinued Operations			2,497	0
Cash Flows from Investing Activities			(249,881)	(499,735)
Cash Flows from Financing Activities:
Repayment of revolving credit facility, term loan facilities and other debt			(3,183,555)	(5,840,147)
Proceeds from revolving credit facility, term loan facilities and other debt			3,188,031	5,980,967
Net proceeds from sales of senior notes			0
Debit (payments) balances under cash pools			76,267	(389)
Debt financing from (repayment to) and equity contribution from (distribution to) noncontrolling interests, net			(1,464)	(2,035)
Intercompany loans from parent			(37,968)	57,765
Parent cash dividends			0	0
Net (payments) proceeds associated with employee stock-based awards			0	0
Net proceeds associated with the Over-Allotment Option				0
Net proceeds associated with the At the Market (ATM) Program				0
Payment of debt financing and stock issuance costs			(526)	(3,157)
Cash Flows from Financing Activities - Continuing Operations			40,785	193,004
Cash Flows from Financing Activities - Discontinued Operations			0	0
Cash Flows from Financing Activities			40,785	193,004
Effect of Exchange Rates on Cash and Cash Equivalents			(11,102)	(19,332)
Increase (decrease) in Cash and Cash Equivalents			(7,294)	(136,634)
Cash and Cash Equivalents, including Restricted Cash, Beginning of Period			169,318	375,584
Cash and Cash Equivalents, including Restricted Cash, End of Period	$ 162,024	$ 238,950	$ 162,024	$ 238,950

Segment Information - Additiona

Segment Information - Additional Information (Details)	12 Months Ended
	Dec. 31, 2018segment
Segment Reporting [Abstract]
Number of operating segments	6

Segment Information - Segment R

Segment Information - Segment Reporting Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Segment Information [Line Items]
Revenues	$ 1,062,224	$ 1,060,991	$ 3,182,994	$ 3,164,272
Depreciation and Amortization	157,561	157,797	484,375	474,595
Depreciation	108,152	112,990	336,485	337,923
Amortization	49,409	44,807	147,890	136,672
Adjusted EBITDA	375,701	362,330	1,051,149	1,065,460
Total Assets	13,577,167	11,810,870	13,577,167	11,810,870	$ 11,857,218
Expenditures for Segment Assets	201,278	182,822	703,622	2,104,525
Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	166,483	112,352	533,614	329,953
Cash Paid for Acquisitions, Net of Cash Acquired	11,848	44,142	56,499	1,711,011
Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs	22,947	26,328	113,509	63,561
North American Records and Information Management Business
Segment Information [Line Items]
Revenues	542,044	539,603	1,608,697	1,605,526
Depreciation and Amortization	58,801	59,869	181,494	183,591
Depreciation	45,394	46,756	137,801	144,146
Amortization	13,407	13,113	43,693	39,445
Adjusted EBITDA	246,415	248,600	715,683	719,199
Total Assets	5,742,593	4,961,149	5,742,593	4,961,149
Expenditures for Segment Assets	64,098	53,665	166,908	138,210
Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	46,376	31,373	103,660	86,365
Cash Paid for Acquisitions, Net of Cash Acquired	0	0	9,876	1,551
Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs	17,722	22,292	53,372	50,294
North American Data Management Business
Segment Information [Line Items]
Revenues	96,552	97,477	289,714	297,472
Depreciation and Amortization	6,709	9,472	27,011	29,114
Depreciation	4,620	7,277	20,451	22,517
Amortization	2,089	2,195	6,560	6,597
Adjusted EBITDA	54,378	53,484	157,998	162,616
Total Assets	860,101	823,868	860,101	823,868
Expenditures for Segment Assets	2,822	5,033	13,708	15,529
Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	2,822	5,033	13,708	15,529
Cash Paid for Acquisitions, Net of Cash Acquired	0	0	0	0
Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs	0	0	0	0
Western European Business
Segment Information [Line Items]
Revenues	121,437	126,354	377,517	393,869
Depreciation and Amortization	13,257	14,316	42,842	49,372
Depreciation	9,137	9,996	30,560	34,575
Amortization	4,120	4,320	12,282	14,797
Adjusted EBITDA	38,639	40,817	122,011	131,377
Total Assets	1,319,442	1,104,221	1,319,442	1,104,221
Expenditures for Segment Assets	18,125	2,774	72,560	37,813
Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	16,191	551	41,031	31,694
Cash Paid for Acquisitions, Net of Cash Acquired	0	0	11,850	0
Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs	1,934	2,223	19,679	6,119
Other International Business
Segment Information [Line Items]
Revenues	197,728	200,639	598,507	618,933
Depreciation and Amortization	30,008	31,487	91,367	93,724
Depreciation	17,512	19,272	53,563	56,535
Amortization	12,496	12,215	37,804	37,189
Adjusted EBITDA	62,120	60,106	178,993	181,305
Total Assets	2,620,709	2,328,574	2,620,709	2,328,574
Expenditures for Segment Assets	43,290	49,330	93,373	111,777
Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	28,944	21,929	56,048	60,992
Cash Paid for Acquisitions, Net of Cash Acquired	11,848	26,277	31,253	45,673
Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs	2,498	1,124	6,072	5,112
Global Data Center Business
Segment Information [Line Items]
Revenues	64,418	63,380	188,245	164,878
Depreciation and Amortization	34,067	27,965	98,370	72,736
Depreciation	20,193	16,431	58,233	40,931
Amortization	13,874	11,534	40,137	31,805
Adjusted EBITDA	32,261	27,299	85,913	72,990
Total Assets	2,349,917	2,159,955	2,349,917	2,159,955
Expenditures for Segment Assets	58,060	42,585	314,242	1,745,770
Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	57,267	41,896	279,856	98,169
Cash Paid for Acquisitions, Net of Cash Acquired	0	0	0	1,645,922
Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs	793	689	34,386	1,679
Corporate and Other Business
Segment Information [Line Items]
Revenues	40,045	33,538	120,314	83,594
Depreciation and Amortization	14,719	14,688	43,291	46,058
Depreciation	11,296	13,258	35,877	39,219
Amortization	3,423	1,430	7,414	6,839
Adjusted EBITDA	(58,112)	(67,976)	(209,449)	(202,027)
Total Assets	684,405	433,103	684,405	433,103
Expenditures for Segment Assets	14,883	29,435	42,831	55,426
Capital Expenditures (see Liquidity and Capital Resources section of Management's Discussion & Analysis of Financial Condition and Results of Operations)	14,883	11,570	39,311	37,204
Cash Paid for Acquisitions, Net of Cash Acquired	0	17,865	3,520	17,865
Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs	0	0	0	357
Storage rental
Segment Information [Line Items]
Revenues	673,318	656,973	2,005,580	1,963,561
Storage rental | North American Records and Information Management Business
Segment Information [Line Items]
Revenues	317,820	306,633	938,161	917,347
Storage rental | North American Data Management Business
Segment Information [Line Items]
Revenues	66,497	67,779	199,819	205,833
Storage rental | Western European Business
Segment Information [Line Items]
Revenues	78,009	79,492	237,258	245,883
Storage rental | Other International Business
Segment Information [Line Items]
Revenues	128,715	124,920	387,086	386,278
Storage rental | Global Data Center Business
Segment Information [Line Items]
Revenues	62,001	60,039	182,301	157,479
Storage rental | Corporate and Other Business
Segment Information [Line Items]
Revenues	20,276	18,110	60,955	50,741
Service
Segment Information [Line Items]
Revenues	388,906	404,018	1,177,414	1,200,711
Service | North American Records and Information Management Business
Segment Information [Line Items]
Revenues	224,224	232,970	670,536	688,179
Service | North American Data Management Business
Segment Information [Line Items]
Revenues	30,055	29,698	89,895	91,639
Service | Western European Business
Segment Information [Line Items]
Revenues	43,428	46,862	140,259	147,986
Service | Other International Business
Segment Information [Line Items]
Revenues	69,013	75,719	211,421	232,655
Service | Global Data Center Business
Segment Information [Line Items]
Revenues	2,417	3,341	5,944	7,399
Service | Corporate and Other Business
Segment Information [Line Items]
Revenues	$ 19,769	$ 15,428	$ 59,359	$ 32,853

Segment Information - Reconcili

Segment Information - Reconciliation to Income from Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Reconciliation of Adjusted EBITDA to income from continuing operations
Adjusted EBITDA	$ 375,701	$ 362,330	$ 1,051,149	$ 1,065,460
Provision (Benefit) for Income Taxes	21,928	14,023	43,127	39,957
Other (Income) Expense, Net	(13,415)	325	(13,397)	1,420
Interest Expense, Net	106,677	103,938	314,427	303,836
(Gain) Loss on disposal/write-down of property, plant and equipment, net	(9,284)	(388)	(17,087)	(2,064)
Depreciation and amortization	157,561	157,797	484,375	474,595
Income (Loss) from Continuing Operations	108,284	77,349	231,107	209,001
Recall Transaction and IODC Transaction
Reconciliation of Adjusted EBITDA to income from continuing operations
Significant Acquisition Costs	$ 3,950	$ 9,286	$ 8,597	$ 38,715

Segment Information - Revenues

Segment Information - Revenues by Product and Service Lines by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Information [Line Items]
Revenues	$ 1,062,224	$ 1,060,991	$ 3,182,994	$ 3,164,272
North American Records and Information Management Business
Segment Information [Line Items]
Revenues	542,044	539,603	1,608,697	1,605,526
North American Data Management Business
Segment Information [Line Items]
Revenues	96,552	97,477	289,714	297,472
Western European Business
Segment Information [Line Items]
Revenues	121,437	126,354	377,517	393,869
Other International Business
Segment Information [Line Items]
Revenues	197,728	200,639	598,507	618,933
Global Data Center Business
Segment Information [Line Items]
Revenues	64,418	63,380	188,245	164,878
Corporate and Other Business
Segment Information [Line Items]
Revenues	40,045	33,538	120,314	83,594
Records Management
Segment Information [Line Items]
Revenues	749,604	741,099	2,233,782	2,227,915
Records Management | North American Records and Information Management Business
Segment Information [Line Items]
Revenues	452,336	441,102	1,322,488	1,317,505
Records Management | North American Data Management Business
Segment Information [Line Items]
Revenues	0	0	0	0
Records Management | Western European Business
Segment Information [Line Items]
Revenues	103,683	107,388	321,759	335,072
Records Management | Other International Business
Segment Information [Line Items]
Revenues	169,748	173,426	515,158	533,950
Records Management | Global Data Center Business
Segment Information [Line Items]
Revenues	0	0	0	0
Records Management | Corporate and Other Business
Segment Information [Line Items]
Revenues	23,837	19,183	74,377	41,388
Data Management
Segment Information [Line Items]
Revenues	145,659	146,727	437,337	449,257
Data Management | North American Records and Information Management Business
Segment Information [Line Items]
Revenues	0	0	0	0
Data Management | North American Data Management Business
Segment Information [Line Items]
Revenues	93,016	94,917	280,157	290,279
Data Management | Western European Business
Segment Information [Line Items]
Revenues	17,551	18,914	54,345	58,526
Data Management | Other International Business
Segment Information [Line Items]
Revenues	18,884	18,541	56,898	58,246
Data Management | Global Data Center Business
Segment Information [Line Items]
Revenues	0	0	0	0
Data Management | Corporate and Other Business
Segment Information [Line Items]
Revenues	16,208	14,355	45,937	42,206
Information Destruction
Segment Information [Line Items]
Revenues	102,543	109,785	323,630	322,222
Information Destruction | North American Records and Information Management Business
Segment Information [Line Items]
Revenues	89,708	98,501	286,209	288,021
Information Destruction | North American Data Management Business
Segment Information [Line Items]
Revenues	3,536	2,560	9,557	7,193
Information Destruction | Western European Business
Segment Information [Line Items]
Revenues	203	52	1,413	271
Information Destruction | Other International Business
Segment Information [Line Items]
Revenues	9,096	8,672	26,451	26,737
Information Destruction | Global Data Center Business
Segment Information [Line Items]
Revenues	0	0	0	0
Information Destruction | Corporate and Other Business
Segment Information [Line Items]
Revenues	0	0	0	0
Data Center
Segment Information [Line Items]
Revenues	64,418	63,380	188,245	164,878
Data Center | North American Records and Information Management Business
Segment Information [Line Items]
Revenues	0	0	0	0
Data Center | North American Data Management Business
Segment Information [Line Items]
Revenues	0	0	0	0
Data Center | Western European Business
Segment Information [Line Items]
Revenues	0	0	0	0
Data Center | Other International Business
Segment Information [Line Items]
Revenues	0	0	0	0
Data Center | Global Data Center Business
Segment Information [Line Items]
Revenues	64,418	63,380	188,245	164,878
Data Center | Corporate and Other Business
Segment Information [Line Items]
Revenues	$ 0	$ 0	$ 0	$ 0

Commitments and Contingencies (

Commitments and Contingencies (Details) € in Thousands, $ in Thousands	Sep. 30, 2019USD ($)	Jun. 30, 2019EUR (€)
Insurance Settlement
Commitments and Contingencies
Reasonably possible additional losses | $	$ 17,000
Tax and Customs Administration, Netherlands | Foreign
Commitments and Contingencies
VAT liability | €		€ 16,800

Stockholders' Equity Matters -

Stockholders' Equity Matters - Dividends Declared (Details) $ / shares in Units, $ in Thousands	Oct. 02, 2019USD ($)	Jul. 26, 2019$ / shares	Jul. 02, 2019USD ($)	May 22, 2019$ / shares	Apr. 02, 2019USD ($)	Feb. 07, 2019$ / shares	Jan. 03, 2019USD ($)	Oct. 25, 2018$ / shares	Oct. 02, 2018USD ($)	Jul. 24, 2018$ / shares	Jul. 02, 2018USD ($)	May 24, 2018$ / shares	Apr. 02, 2018USD ($)	Feb. 14, 2018$ / shares	Oct. 31, 2017USD ($)bank	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)shares	Sep. 30, 2018USD ($)
Subsidiary or Equity Method Investee [Line Items]
Dividend Per Share (in dollars per share) | $ / shares		$ 0.6110		$ 0.6110		$ 0.6110		$ 0.6110		$ 0.5875		$ 0.5875		$ 0.5875
Total Amount			$ 175,389		$ 175,242		$ 174,935		$ 168,148		$ 168,078		$ 167,969			$ 176,665	$ 169,186	$ 529,767	$ 507,437
Subsequent Event
Subsidiary or Equity Method Investee [Line Items]
Total Amount	$ 175,434
At The Market (ATM) Equity Program
Subsidiary or Equity Method Investee [Line Items]
Number of banks | bank															10
Aggregate sales price of common stock															$ 500,000
Shares of common stock sold (in shares) | shares																		0
Remaining aggregate sale price of shares of common stock																$ 431,200		$ 431,200

Divestments (Details)

Divestments (Details) - USD ($) $ in Thousands	Mar. 19, 2019	Mar. 31, 2019	Sep. 30, 2019	Sep. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investments in joint ventures			$ 19,222	$ 0
Consumer Storage | Disposal Group, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on disposal		$ 4,200
Corporate Joint Venture | Makespace
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investments in joint ventures	$ 20,000
Equity interest	34.00%
Equity method investment, fair value	$ 27,500
Carrying value of investment			$ 21,152

Significant Acquisition Costs -

Significant Acquisition Costs - Significant Acquisition Costs Included in Statements of Operations (Details) - Recall Transaction and IODC Transaction - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	$ 3,950	$ 9,286	$ 8,597	$ 38,715
Cost of sales (excluding depreciation and amortization)
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	1,945	2,892	4,136	5,015
Selling, general and administrative expenses
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	$ 2,005	$ 6,394	$ 4,461	$ 33,700

Significant Acquisition Costs_2

Significant Acquisition Costs - Significant Acquisition Costs by Segment (Details) - Recall Transaction and IODC Transaction - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	$ 3,950	$ 9,286	$ 8,597	$ 38,715
North American Records and Information Management Business
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	796	950	1,174	4,551
North American Data Management Business
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	11	83	11	434
Western European Business
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	4	1,806	85	5,385
Other International Business
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	1,307	2,001	2,760	3,434
Global Data Center Business
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	70	232	337	11,572
Corporate and Other Business
Business Combination, Separately Recognized Transactions [Line Items]
Total Significant Acquisition Costs	$ 1,762	$ 4,214	$ 4,230	$ 13,339

Related Party Transactions - (D

Related Party Transactions - (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Makespace
Related Party Transaction [Line Items]
Revenue	$ 7,300	$ 15,200

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ in Thousands	3 Months Ended	27 Months Ended
	Dec. 31, 2019	Dec. 31, 2021
Project Summit | Forecast
Subsequent Event [Line Items]
Restructuring costs pursuant to plan	$ 60,000	$ 240,000