Iron Mountain (IRM) 10-K 13 Feb 20 2019 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2019	Feb. 07, 2020	Jun. 30, 2019
Cover page.
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 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
Title of 12(b) Security	Common Stock, $.01 par value per share
Trading Symbol	IRM
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 8.9
Entity Common Stock, Shares Outstanding		287,343,251
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Certain information required in Items 10, 11, 12, 13 and 14 of Part III of this Annual Report on Form 10-K (the "Annual Report") is incorporated by reference from our definitive Proxy Statement for our 2020 Annual Meeting of Stockholders (our "Proxy Statement") to be filed with the Securities and Exchange Commission (the "SEC") within 120 days after the close of the fiscal year ended December 31, 2019 .
Entity Central Index Key	0001020569
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 193,555	$ 165,485
Accounts receivable (less allowances of $42,856 and $43,584 as of December 31, 2019 and 2018, respectively)	850,701	846,889
Prepaid expenses and other	192,083	195,740
Total Current Assets	1,236,339	1,208,114
Property, Plant and Equipment:
Property, plant and equipment	8,048,906
Less—Accumulated depreciation	(3,425,869)
Property, Plant and Equipment, net	4,623,037
Property, plant and equipment	8,048,906	7,600,949
Less—Accumulated depreciation	(3,425,869)	(3,111,392)
Property, Plant and Equipment, net		4,489,557
Other Assets, Net:
Goodwill	4,485,209	4,441,030
Customer relationships, customer inducements and data center lease-based intangibles	1,393,183	1,506,522
Operating lease right-of-use assets (see Note 2.m.)	1,869,101	0
Other	209,947	211,995
Total Other Assets, Net	7,957,440	6,159,547
Total Assets	13,816,816	11,857,218
Current Liabilities:
Current portion of long-term debt	389,013	126,406
Accounts payable	324,708	318,765
Accrued expenses and other current liabilities (includes current portion of operating lease liabilities, see Note 2.m.)	961,752	780,781
Deferred revenue	274,036	264,823
Total Current Liabilities	1,949,509	1,490,775
Long-term Debt, net of current portion	8,275,566	8,016,417
Long-term Operating Lease Liabilities, net of current portion (see Note 2.m.)	1,728,686	0
Other Long-term Liabilities	143,018	111,331
Deferred Rent (see Note 2.m.)	0	121,864
Deferred Income Taxes	188,128	183,836
Commitments and Contingencies (see Note 10)
Redeemable Noncontrolling Interests (see Note 2.v.)	67,682	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 287,299,645 shares and 286,321,009 shares as of December 31, 2019 and 2018, respectively)	2,873	2,863
Additional paid-in capital	4,298,566	4,263,348
(Distributions in excess of earnings) Earnings in excess of distributions	(2,574,896)	(2,139,493)
Accumulated other comprehensive items, net	(262,581)	(265,664)
Total Iron Mountain Incorporated Stockholders' Equity	1,463,962	1,861,054
Noncontrolling Interests	265	1,409
Total Equity	1,464,227	1,862,463
Total Liabilities and Equity	$ 13,816,816	$ 11,857,218

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 42,856	$ 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	287,299,645	286,321,009
Common stock, outstanding shares	287,299,645	286,321,009

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	Oct. 01, 2017	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues:
Storage rental										$ 2,681,087
Revenues						$ 1,061,489	$ 1,060,991	$ 1,060,823	$ 1,042,458		$ 4,225,761	$ 3,845,578
Total Revenues		$ 1,079,590	$ 1,062,224	$ 1,066,907	$ 1,053,863					4,262,584
Operating Expenses:
Cost of sales (excluding depreciation and amortization)										1,833,315	1,793,954	1,664,825
Selling, general and administrative										991,664	1,006,983	937,180
Depreciation and amortization										658,201	639,514	522,376
Significant Acquisition Costs (see Note 2.x.)										13,293	50,665	84,901
Restructuring Charges (see Note 14)		48,600								48,597	0	0
Intangible impairments	$ 3,011									0	0	3,011
(Gain) Loss on disposal/write-down of property, plant and equipment, net										(63,824)	(73,622)	(766)
Total Operating Expenses										3,481,246	3,417,494	3,211,527
Operating (Loss) Income		206,074	223,474	193,115	158,675	254,053	195,635	201,460	157,119	781,338	808,267	634,051
Interest Expense, Net (includes Interest Income of $6,559, $6,553 and $7,659 in 2019, 2018 and 2017, respectively)										419,298	409,648	353,645
Other Expense (Income), Net										33,898	(11,692)	79,429
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes										328,142	410,311	200,977
Provision (Benefit) for Income Taxes										59,931	42,753	22,962
Income (Loss) from Continuing Operations		37,104	108,284	92,347	30,476	158,557	77,349	92,263	39,389	268,211	367,558	178,015
Income (Loss) from Discontinued Operations, Net of Tax		0	0	128	(24)	0	(11,605)	(360)	(462)	104	(12,427)	(6,291)
Net Income (Loss)		37,104	108,284	92,475	30,452	158,557	65,744	91,903	38,927	268,315	355,131	171,724
Less: Net Income (Loss) Attributable to Noncontrolling Interests										938	1,198	1,611
Net Income (Loss) Attributable to Iron Mountain Incorporated		$ 37,700	$ 107,675	$ 92,441	$ 29,561	$ 157,844	$ 65,869	$ 91,761	$ 38,459	$ 267,377	$ 353,933	$ 170,113
Earnings (Losses) per Share—Basic:
Income (Loss) from Continuing Operations (in dollars per share)		$ 0.13	$ 0.37	$ 0.32	$ 0.10	$ 0.55	$ 0.27	$ 0.32	$ 0.14	$ 0.93	$ 1.28	$ 0.66
Total (Loss) Income from Discontinued Operations, Net of Tax (in dollars per share)		0	0	0	0	0	(0.04)	0	0	0	(0.04)	(0.02)
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)		0.13	0.37	0.32	0.10	0.55	0.23	0.32	0.13	0.93	1.24	0.64
Earnings (Losses) per Share—Diluted:
Income (Loss) from Continuing Operations (in dollars per share)		0.13	0.37	0.32	0.10	0.55	0.27	0.32	0.14	0.93	1.28	0.66
Total (Loss) Income from Discontinued Operations, Net of Tax (in dollars per share)		0	0	0	0	0	(0.04)	0	0	0	(0.04)	(0.02)
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)		$ 0.13	$ 0.37	$ 0.32	$ 0.10	$ 0.55	$ 0.23	$ 0.32	$ 0.13	$ 0.93	$ 1.23	$ 0.64
Weighted Average Common Shares Outstanding-Basic (in shares)										286,971,000	285,913,000	265,898,000
Weighted Average Common Shares Outstanding-Diluted (in shares)										287,686,944	286,652,588	266,844,584
Storage rental
Revenues:
Revenues											$ 2,622,455	$ 2,377,557
Service
Revenues:
Revenues										$ 1,581,497	$ 1,603,306	$ 1,468,021

CONSOLIDATED STATEMENTS OF OP_2

CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Interest Income	$ 6,559	$ 6,553	$ 7,659

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 37,104	$ 108,284	$ 92,475	$ 30,452	$ 158,557	$ 65,744	$ 91,903	$ 38,927	$ 268,315	$ 355,131	$ 171,724
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustment									11,994	(164,107)	108,564
Change in Fair Value of Derivative Instruments									(8,783)	(973)
Total Other Comprehensive Income (Loss)									3,211	(165,080)	108,564
Comprehensive Income (Loss)									271,526	190,051	280,288
Comprehensive Income (Loss) Attributable to Noncontrolling Interests									1,066	(2,207)	1,591
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated									$ 270,460	$ 192,258	$ 278,697

CONSOLIDATED STATEMENTS OF EQUI

CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Earnings in Excess of Distributions (Distributions in Excess of Earnings)	Accumulated Other Comprehensive Items, Net	Noncontrolling Interests	Redeemable Noncontrolling Interests	Equity Offering	Equity OfferingCommon Stock	Equity OfferingAdditional Paid-in Capital	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
Stockholders' equity, beginning balance at Dec. 31, 2016	$ 1,936,671	$ 2,636	$ 3,489,795	$ (1,343,311)	$ (212,573)	$ 124
Balance (in shares) at Dec. 31, 2016		263,682,670
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	43,110	$ 13	43,097
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		1,252,823
Issuance of shares								$ 515,952	$ 145	$ 515,807				$ 58,566	$ 15	$ 58,551
Issuance of shares (in shares)									14,500,000						1,481,053
Issuance of shares in connection with the Fortrust Transaction (see Note 6)	83,014	$ 22	82,992
Issuance of shares in connection with the Fortrust Transaction (see Note 6) (in shares)		2,193,637
Change in value of redeemable noncontrolling interests (see Note 2.v.)	(25,680)		(25,680)				$ 25,680
Parent cash dividends declared	(606,476)			(606,476)
Foreign currency translation adjustment	108,481				108,584	(103)
Net income (loss)	171,945
Net Income (Loss)	171,724			170,113		1,832
Noncontrolling interests equity contributions							13,230
Noncontrolling interests dividends	(1,956)					(1,956)
Purchase of noncontrolling interests	1,507					1,507
Stockholders' equity, ending balance at Dec. 31, 2017	2,285,134	$ 2,831	4,164,562	(1,779,674)	(103,989)	1,404
Balance (in shares) at Dec. 31, 2017		283,110,183
Balance at Dec. 31, 2016							54,697
Increase (Decrease) in Temporary Equity [Roll Forward]
Foreign currency translation adjustment							83
Net income (loss)							(221)
Noncontrolling interests dividends							(2,051)
Balance at Dec. 31, 2017							91,418
Increase (Decrease) in Stockholders' Equity
Cumulative-effect adjustment for adoption | ASU 2014-09	(30,233)			(30,233)
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	30,020	$ 8	30,012
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		762,340
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 (see Note 2.v.)	(16,110)		(16,110)				(16,151)
Parent cash dividends declared	(683,519)			(683,519)
Foreign currency translation adjustment	(160,548)				(160,702)	154
Change in fair value of derivative instruments	(973)				(973)
Net income (loss)	353,784
Net Income (Loss)	355,131			353,933		(149)
Noncontrolling interests dividends	0
Stockholders' equity, ending balance at Dec. 31, 2018	$ 1,862,463	$ 2,863	4,263,348	(2,139,493)	(265,664)	1,409
Balance (in shares) at Dec. 31, 2018	286,321,009	286,321,009
Increase (Decrease) in Temporary Equity [Roll Forward]
Foreign currency translation adjustment							(3,559)
Net income (loss)							1,347
Noncontrolling interests dividends							(2,523)
Balance at Dec. 31, 2018	$ 70,532						70,532
Increase (Decrease) in Stockholders' Equity
Cumulative-effect adjustment for adoption | ASU 2016-02	5,781			5,781
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	36,682	$ 10	36,672
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		978,636
Change in value of redeemable noncontrolling interests (see Note 2.v.)	(1,454)		(1,454)				(3,136)
Parent cash dividends declared	(708,561)			(708,561)
Foreign currency translation adjustment	11,866				11,866
Change in fair value of derivative instruments	(8,783)				(8,783)
Net income (loss)	266,233
Net Income (Loss)	268,315			267,377		(1,144)
Stockholders' equity, ending balance at Dec. 31, 2019	$ 1,464,227	$ 2,873	$ 4,298,566	$ (2,574,896)	$ (262,581)	$ 265
Balance (in shares) at Dec. 31, 2019	287,299,645	287,299,645
Increase (Decrease) in Temporary Equity [Roll Forward]
Foreign currency translation adjustment							128
Net income (loss)							2,082
Noncontrolling interests dividends							(1,924)
Balance at Dec. 31, 2019	$ 67,682						$ 67,682

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flows from Operating Activities:
Net Income (Loss)	$ 268,315	$ 355,131	$ 171,724
(Income) loss from discontinued operations	(104)	12,427	6,291
Adjustments to reconcile net income (loss) to cash flows from operating activities:
Depreciation	456,323	452,740	406,283
Amortization (includes amortization of deferred financing costs and discounts of $16,740, $15,675 and $14,962 in 2019, 2018 and 2017, respectively)	218,618	202,449	131,055
Intangible impairments	0	0	3,011
Revenue reduction associated with amortization of permanent withdrawal fees and above- and below-market leases (see Note 2.i.)	13,703	16,281	11,253
Stock-based compensation expense	35,654	31,167	30,019
(Benefit) provision for deferred income taxes	(624)	(4,239)	(39,355)
Debt extinguishment expense, net	0	0	78,368
(Gain) loss on disposal/write-down of property, plant and equipment, net	(63,824)	(74,134)	(766)
Gain on Russia and Ukraine Divestment (see Note 13)	0	0	(38,869)
Foreign currency transactions and other, net	29,838	(16,395)	50,503
Decrease (increase) in assets	5,404	(36,054)	(93,805)
Increase (decrease) in liabilities	3,352	(2,829)	8,547
Cash Flows from Operating Activities-Continuing Operations	966,655	936,544	724,259
Cash Flows from Operating Activities-Discontinued Operations	0	(995)	(3,291)
Cash Flows from Operating Activities	966,655	935,549	720,968
Cash Flows from Investing Activities:
Capital expenditures	(692,983)	(460,062)	(343,131)
Cash paid for acquisitions, net of cash acquired (see Note 6)	(58,237)	(1,758,557)	(219,705)
Acquisition of customer relationships	(46,105)	(63,577)	(55,126)
Customer inducements (see Note 2.i.)	(9,371)	(8,902)	(20,059)
Customer fulfillment costs and third party commissions (see Note 2.l.)	(76,171)	(26,208)	0
Net proceeds from divestments (see Note 13)	0	1,019	29,236
Investments in Joint Ventures (see Note 13)	(19,222)	0	0
Proceeds from sales of property and equipment and other, net (including real estate) and proceeds from involuntary conversion of property and equipment	166,143	86,159	9,337
Cash Flows from Investing Activities-Continuing Operations	(735,946)	(2,230,128)	(599,448)
Cash Flows from Investing Activities-Discontinued Operations	5,061	8,250	0
Cash Flows from Investing Activities	(730,885)	(2,221,878)	(599,448)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(14,535,115)	(14,192,139)	(14,429,695)
Proceeds from revolving credit and term loan facilities and other debt	14,059,818	15,351,614	13,917,055
Early retirement of senior subordinated and senior notes	0	0	(1,746,856)
Net proceeds from sales of senior notes	987,500	0	2,656,948
Debt financing and equity contribution from noncontrolling interests	0	0	13,230
Debt repayment and equity distribution to noncontrolling interests	(1,924)	(2,523)	(4,151)
Parent cash dividends	(704,526)	(673,635)	(439,999)
Net proceeds associated with the Equity Offering, including Over-Allotment Option	0	76,192	516,462
Net proceeds associated with the At The Market (ATM) Program	0	8,716	59,129
Net proceeds (payments) associated with employee stock-based awards	1,027		13,095
Net proceeds (payments) associated with employee stock-based awards		(1,142)
Payment of debt financing and stock issuance costs and other	(5,753)	(16,405)	(14,793)
Cash Flows from Financing Activities-Continuing Operations	(198,973)	550,678	540,425
Cash Flows from Financing Activities-Discontinued Operations	0	0	0
Cash Flows from Financing Activities	(198,973)	550,678	540,425
Effect of Exchange Rates on Cash and Cash Equivalents	(8,727)	(24,563)	27,270
Increase (decrease) in Cash and Cash Equivalents	28,070	(760,214)	689,215
Cash and cash equivalents, including Restricted Cash, beginning of year	165,485	925,699	236,484
Cash and cash equivalents, including Restricted Cash, end of year	193,555	165,485	925,699
Supplemental Information:
Cash Paid for Interest	394,984	388,440	368,468
Cash Paid for Income Taxes, Net	61,691	64,493	104,498
Non-Cash Investing and Financing Activities:
Financing Leases (see Note 2.m.)	32,742	83,948	166,843
Accrued Capital Expenditures	82,345	84,143	71,098
Accrued Purchase Price and Other Holdbacks (see Note 6)	4,135	35,218	20,093
Dividends Payable	186,021	181,986	172,102
Fair Value of Stock Issued for Fortrust Transaction (see Note 6)	$ 0	$ 0	$ 83,014

CONSOLIDATED STATEMENTS OF CA_2

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Cash Flows [Abstract]
Deferred financing costs and discount included in Amortization	$ 16,740	$ 15,675	$ 14,962

Nature of Business

Nature of Business	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business	Nature of Business The accompanying financial statements represent the consolidated accounts of Iron Mountain Incorporated, a Delaware corporation (“IMI”), and its subsidiaries (“we” or “us”). We help organizations around the world protect their information, reduce storage rental costs, comply with regulations, facilitate corporate disaster recovery, and better use their information and information technology ("IT") infrastructure for business advantages, regardless of its format, location or life cycle stage. We do this by storing physical records and data backup media, offering information management solutions, and providing data center space for enterprise-class colocation and opportunistic hyperscale data center deployments. 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’ IT infrastructure, with reliable and flexible deployment options. 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 focuses 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. We are also implementing systems and process changes designed to make our organization more agile and dynamic, streamline our organization and reallocate our resources to better align with our strategic goals as part of Project Summit. The activities associated with Project Summit began in the fourth quarter of 2019 and are expected to be substantially complete by the end of 2021. See Note 2.h., Note 9 and Note 14. On January 1, 2019, we adopted Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842) , as amended ("ASU 2016-02"). See Note 2.m. On January 10, 2018, we completed the acquisition of IO Data Centers, LLC ("IODC"). See Note 6. On January 1, 2018, we adopted ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"). See Note 2.l.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies a. Principles of Consolidation The accompanying financial statements reflect our financial position, results of operations, comprehensive income (loss), equity and cash flows on a consolidated basis. All intercompany transactions and account balances have been eliminated. b. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires us to make estimates, judgments and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities at the date of the financial statements and for the period then ended. On an ongoing basis, we evaluate the estimates used. We base our estimates on historical experience, actuarial estimates, current conditions and various other assumptions that we believe to be reasonable under the circumstances. These estimates form the basis for making judgments about the carrying values of assets and liabilities and are not readily apparent from other sources. Actual results may differ from these estimates. c. 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 December 31, 2019 and 2018 , we had $4,865 and $15,141 d. Foreign Currency Local currencies are the functional currencies for our operations outside the United States, with the exception of certain foreign holding companies, whose functional currency is the United States dollar. In those instances where the local currency is the functional currency, assets and liabilities are translated at period-end exchange rates, and revenues and expenses are translated at average exchange rates for the applicable period. Resulting translation adjustments are reflected in the accumulated other comprehensive, net component of Iron Mountain Incorporated Stockholders' Equity. See Note 2.t. e. Derivative Instruments and Hedging Activities Every derivative instrument is required to be recorded in the balance sheet as either an asset or a liability measured at its fair value. Periodically, we acquire derivative instruments that are intended to hedge either cash flows or values that are subject to foreign exchange or other market price risk and not for trading purposes. We have formally documented our hedging relationships, including identification of the hedging instruments and the hedged items, as well as our risk management objectives and strategies for undertaking each hedge transaction. Given the recurring nature of our revenues and the long-term nature of our asset base, we have the ability and the preference to use long-term, fixed interest rate debt to finance our business, thereby preserving our long-term returns on invested capital. We target approximately 75% of our debt portfolio to be fixed with respect to interest rates. Occasionally, we may use interest rate swaps as a tool to maintain our targeted level of fixed rate debt. In addition, we may use borrowings in foreign currencies, either obtained in the United States or by our foreign subsidiaries, to hedge foreign currency risk associated with our international investments. Sometimes we enter into currency swaps to temporarily hedge an overseas investment, such as a major acquisition, while we arrange permanent financing or to hedge our exposure due to foreign currency exchange movements related to our intercompany accounts with and between our foreign subsidiaries. As of December 31, 2019 and 2018 , none of our derivative instruments contained credit-risk related contingent features. See Note 3. f. Property, Plant and Equipment Property, plant and equipment are stated at cost and depreciated using the straight-line method with the following useful lives (in years): Range Buildings and building improvements 5 to 40 Leasehold improvements 5 to 10 or life of the lease (whichever is shorter) Racking 1 to 20 or life of the lease (whichever is shorter) Warehouse equipment/vehicles 1 to 10 Furniture and fixtures 1 to 10 Computer hardware and software 2 to 5 Property, plant and equipment (including financing leases in the respective category), at cost, consist of the following: December 31, 2019 2018 Land $ 448,566 $ 400,980 Buildings and building improvements 3,029,309 2,991,307 Leasehold improvements 852,022 770,666 Racking 2,040,832 2,001,831 Warehouse equipment/vehicles 483,218 481,515 Furniture and fixtures 54,275 56,207 Computer hardware and software 689,261 680,283 Construction in progress 451,423 218,160 $ 8,048,906 $ 7,600,949 Minor maintenance costs are expensed as incurred. Major improvements which extend the life, increase the capacity or improve the safety or the efficiency of property owned are capitalized and depreciated. Major improvements to leased buildings are capitalized as leasehold improvements and depreciated. We capitalize interest expense during the active construction period of major capital projects. Capitalized interest is added to the cost of the underlying assets and is amortized over the useful lives of the assets. During the years ended December 31, 2019 and 2018 , we capitalized interest of $15,980 and $3,732 , respectively. The amount of capitalized interest during the year ended December 31, 2017 was insignificant. We develop various software applications for internal use. Computer software costs associated with internal use software are expensed as incurred until certain capitalization criteria are met. Third party consulting costs, as well as payroll and related costs for employees directly associated with, and devoting time to, the development of internal use computer software projects (to the extent time is spent directly on the project) are capitalized. During the years ended December 31, 2019 , 2018 and 2017 , we capitalized $34,650 , $29,407 and $25,166 of costs, respectively, associated with the development of internal use computer software projects. Capitalization begins when the design stage of the application has been completed and it is probable that the project will be completed and used to perform the function intended. Capitalization ends when the asset is ready for its intended use. Depreciation begins when the software is placed in service. Computer software costs that are capitalized are periodically evaluated for impairment. Entities are required to record the fair value of a liability for an asset retirement obligation in the period in which it is incurred. Asset retirement obligations represent the costs to replace or remove tangible long-lived assets required by law, regulatory rule or contractual agreement. Our asset retirement obligations are primarily the result of requirements under our facility lease agreements which generally have "return to original condition" clauses which would require us to remove or restore items such as shred pits, vaults, demising walls and office build-outs, among others. The significant assumptions used in estimating our aggregate asset retirement obligations are the timing of removals, the probability of a requirement to perform, estimated cost and associated expected inflation rates that are consistent with historical rates and credit-adjusted risk-free rates that approximate our incremental borrowing rate. Our asset retirement obligations at December 31, 2019 and 2018 were $30,831 and $28,256 , respectively. g. Long-Lived Assets We review long-lived assets, including all finite-lived intangible assets, for impairment whenever events or changes in circumstances indicate the carrying amount of such assets may not be recoverable. Recoverability of these assets is determined by comparing the sum of the forecasted undiscounted net cash flows of the operation to which the assets relate to their carrying amount. The operations are generally distinguished by the business segment and geographic region in which they operate. If it is determined that we are unable to recover the carrying amount of the assets, the long-lived assets are written down, on a pro rata basis, to fair value. Fair value is determined based on discounted cash flows or appraised values, depending upon the nature of the assets. Long-lived assets, including finite-lived intangible assets, are amortized over their useful lives. Annually, or more frequently if events or circumstances warrant, we assess whether a change in the lives over which long-lived assets, including finite-lived intangible assets, are amortized is necessary. Consolidated gain on disposal/write-down of property, plant and equipment, net, for the year ended December 31, 2019 was $63,824 . The gain consisted primarily of gains associated with (i) sale and sale-leaseback transactions involving the sales of facilities in the United States of approximately $67,800 and (ii) the sale of certain land and buildings in the United Kingdom of approximately $36,000 . These gains were partially offset by losses primarily associated with (i) the impairment charge on the assets associated with the select offerings within our Iron Cloud portfolio (as defined and described below) and (ii) the write-down of certain property, plant and equipment in the United States of approximately $15,700 . During the second quarter of 2019, we began exploring strategic options regarding how to maintain and support the infrastructure of select offerings within our Iron Mountain Iron Cloud (“Iron Cloud”) portfolio. As a result, during the second quarter of 2019, we performed a long-lived asset impairment analysis on the assets associated with these select offerings and concluded that the associated carrying value of the long-lived assets (which consisted entirely of property, plant and equipment) was not recoverable based upon the underlying cash flows associated with these select offerings. On September 30, 2019, we entered into an agreement (the “Iron Cloud Outsourcing Agreement”) with a wholesale provider of data infrastructure and data management services to outsource the operation, infrastructure management and maintenance and delivery of select offerings within our Iron Cloud portfolio. In conjunction with the entry into the Iron Cloud Outsourcing Agreement, we also sold certain IT infrastructure assets and the rights to certain hardware and software maintenance contracts used to deliver these Iron Cloud offerings. As a result of our long-lived asset impairment analysis and sale of certain IT infrastructure assets and rights to certain hardware and software maintenance contracts, we recognized an impairment charge and a loss on sale of the assets totaling approximately $25,000 during the year ended December 31, 2019 . Consolidated gain on disposal/write-down of property, plant and equipment, net for the year ended December 31, 2018 was $73,622 . The gain consisted primarily of (i) the gain on sale of real estate for the sale of buildings in the United Kingdom of approximately $63,800 h. Goodwill and Other Indefinite-Lived Intangible Assets Goodwill and intangible assets with indefinite lives are not amortized but are reviewed annually for impairment or more frequently if impairment indicators arise. Other than goodwill, we currently have no intangible assets that have indefinite lives and which are not amortized. We have selected October 1 as our annual goodwill impairment review date. We have performed our annual goodwill impairment review as of October 1, 2019 , 2018 and 2017 . We concluded that as of October 1, 2019 and October 1, 2018, goodwill was not impaired. As of October 1, 2017, we determined that the fair value of the Consumer Storage reporting unit was less than its carrying value and, therefore, we recorded a $3,011 impairment charge, which represented a full write-off of all goodwill associated with this reporting unit. We concluded that the goodwill associated with each of our other reporting units was not impaired as of October 1, 2017. Our reporting units at which level we performed our goodwill impairment analysis as of December 31, 2017 were as follows: (1) North American Records and Information Management; (2) North American Data Management; (3) Consumer Storage; (4) Fine Arts; (5) Western Europe; (6) Northern/Eastern Europe and Middle East, Africa and India ("NEE and MEAI"); (7) Latin America; (8) Australia and New Zealand; (9) Asia; and (10) Global Data Center. The following is a discussion regarding (i) the reporting units at which level we tested goodwill for impairment as of October 1, 2018, (ii) changes to the composition of our reporting units between October 1, 2018 and December 31, 2018, (iii) the reporting units at which level we tested goodwill for impairment as of October 1, 2019 and (iv) changes to the composition of our reporting units between October 1, 2019 and December 31, 2019 (including the amount of goodwill associated with each reporting unit). When changes occur in the composition of one or more reporting units, the goodwill is reassigned to the reporting units affected based upon their relative fair values. Goodwill Impairment Analysis - 2018 a. Reporting Units as of October 1, 2018 Our reporting units at which level we performed our goodwill impairment analysis as of October 1, 2018 were as follows: (1) North American Records and Information Management; (2) North American Data Management; (3) Consumer Storage; (4) Fine Arts; (5) Entertainment Services; (6) Western Europe; (7) Northern/Eastern Europe and Middle East and India ("NEE and MEI"); (8) Latin America; (9) Australia, New Zealand and South Africa ("ANZ SA"); (10) Asia; and (11) Global Data Center. We concluded that the goodwill associated with each of our reporting units was not impaired as of October 1, 2018. b. Changes to Composition of Reporting Units between October 1, 2018 and December 31, 2018 During the fourth quarter of 2018, as a result of changes in the management of our Information Governance and Digital Solutions business in Sweden, we reassessed the composition of our reporting units. As part of this reassessment, we determined that our Information Governance and Digital Solutions business in Sweden (which was previously managed along with our other businesses within the Western Europe reporting unit) was at the time being managed in conjunction with our businesses included in our NEE and MEI reporting unit, which already included the remainder of our business in Sweden. We concluded that the goodwill associated with our Western Europe and NEE and MEI reporting units was not impaired following this change in reporting units. Goodwill by Reporting Unit as of December 31, 2018 The carrying value of goodwill, net for each of our reporting units described above as of December 31, 2018 is as follows: Carrying Value North American Records and Information Management(1) $ 2,251,795 North American Data Management(2) 493,491 Consumer Storage(3) — Fine Arts(3) 35,526 Entertainment Services(3) 34,233 Western Europe(4) 381,806 NEE and MEI(5) 169,780 Latin America(5) 136,099 ANZ SA(5) 300,204 Asia(5) 212,140 Global Data Center(6) 425,956 Total $ 4,441,030 _______________________________________________________________________________ (1) This reporting unit comprised our former North American Records and Information Management Business segment. (2) This reporting unit comprised our former North American Data Management Business segment. (3) This reporting unit was included in our Corporate and Other Business segment. (4) This reporting unit comprised our former Western European Business segment. (5) This reporting unit was included in our former Other International Business segment. (6) This reporting unit comprised our Global Data Center Business segment. Goodwill Impairment Analysis - 2019 a. Reporting Units as of October 1, 2019 Our reporting units at which level we performed our goodwill impairment analysis as of October 1, 2019 were as follows: (1) North American Records and Information Management; (2) North American Data Management; (3) Fine Arts; (4) Entertainment Services; (5) Western Europe; (6) NEE and MEI; (7) Latin America; (8) ANZ SA; (9) Asia; and (10) Global Data Center. We concluded that the goodwill associated with each of our reporting units was not impaired as of such date. b. Changes to Composition of Reporting Units between October 1, 2019 and December 31, 2019 During the fourth quarter of 2019, as a result of the realignment of our global managerial structure and changes to our internal financial reporting associated with Project Summit, we reassessed the composition of our reportable operating segments (see Note 9 for a description and definitions of our reporting operating segments) as well as our reporting units. As of December 31, 2019, we have nine reporting units. We note the following changes to our reporting units: (1) our former North American Records and Information Management (excluding our technology escrow services business) and North American Data Management reporting units are now being managed as our “North America RIM” reporting unit; (2) our former Western Europe and NEE and MEI reporting units (excluding India) and our business in Africa (which was previously managed as a component of our former ANZ SA reporting unit) is now being managed together as our “Europe RIM” reporting unit; (3) our business in India, which was previously managed as a component of our former NEE and MEI reporting unit is now being managed in conjunction with our businesses in Asia as our “Asia RIM” reporting unit; (4) our former Australia, New Zealand and South Africa reporting unit will no longer include South Africa and will be referred to as our “Australia and New Zealand RIM” (or “ANZ RIM”) reporting unit; and (5) our technology escrow services business is now being managed separately as our “Technology Escrow Services” reporting unit. There were no changes to our Global Data Center, Fine Arts, Entertainment Services and Latin America RIM reporting units. We concluded that the goodwill associated with our North America RIM, Europe RIM, ANZ RIM, Asia RIM and Technology Escrow Services reporting units were not impaired following this change in reporting units. Goodwill by Reporting Unit as of December 31, 2019 The carrying value of goodwill, net for each of our reporting units described above as of December 31, 2019 is as follows: Carrying Value North America RIM(1) $ 2,715,550 Europe RIM(1) 572,482 Latin America RIM(1) 140,897 ANZ RIM(1) 274,913 Asia RIM(1) 239,059 Global Data Center(2) 424,568 Fine Arts(3) 37,533 Entertainment Services(3) 34,102 Technology Escrow Services(3) 46,105 Total $ 4,485,209 ______________________________________________________________________ (1) This reporting unit is included in our Global RIM (as defined in Note 9) Business segment. (2) This reporting unit comprises our Global Data Center Business segment. (3) This reporting unit is included in our Corporate and Other Business segment. Reporting unit valuations have generally been determined using a combined approach based on the present value of future cash flows (the "Discounted Cash Flow Model") and market multiples (the "Market Approach"). The Discounted Cash Flow Model incorporates significant assumptions including future revenue growth rates, operating margins, discount rates and capital expenditures. The Market Approach requires us to make assumptions related to Adjusted EBITDA multiples. Changes in economic and operating conditions impacting these assumptions or changes in multiples could result in goodwill impairments in future periods. In conjunction with our annual goodwill impairment reviews, we reconcile the sum of the valuations of all of our reporting units to our market capitalization as of such dates. The changes in the carrying value of goodwill attributable to each reportable operating segment for the years ended December 31, 2019 and 2018 is as follows: Global RIM Business Global Data Center Business Corporate and Other Business Total Goodwill balance, net of accumulated amortization, as of December 31, 2017 $ 3,964,114 $ — $ 106,153 $ 4,070,267 Deductible goodwill acquired during the year 3,251 — 6,644 9,895 Non-deductible goodwill acquired during the year 34,230 429,853 3,620 467,703 Goodwill allocated to IMFS Divestment (see Note 13) (1,202 ) — — (1,202 ) Fair value and other adjustments(1) 3,860 — 609 4,469 Currency effects (105,043 ) (3,897 ) (1,162 ) (110,102 ) Goodwill balance, net of accumulated amortization, as of December 31, 2018 3,899,210 425,956 115,864 4,441,030 Deductible goodwill acquired during the year 16,450 — — 16,450 Non-deductible goodwill acquired during the year 11,228 — 1,904 13,132 Fair value and other adjustments(2) 4,439 258 (417 ) 4,280 Currency effects 11,574 (1,646 ) 389 10,317 Goodwill balance, net of accumulated amortization, as of December 31, 2019 $ 3,942,901 $ 424,568 $ 117,740 $ 4,485,209 Accumulated Goodwill Impairment Balance as of December 31, 2018 $ 132,409 $ — $ 3,011 $ 135,420 Accumulated Goodwill Impairment Balance as of December 31, 2019 $ 132,409 $ — $ 3,011 $ 135,420 ___________________________________________________________________ (1) Total fair value and other adjustments primarily include net adjustments of $(2,717) primarily related to property, plant and equipment, customer relationship intangible assets and other liabilities and $7,186 of cash paid related to certain acquisitions completed in 2017. (2) Total fair value and other adjustments primarily include net adjustments of $4,942 primarily related to property, plant and equipment, customer relationship 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. i. Finite-lived Intangible Assets and Liabilities i. Customer Relationship Intangible Assets Customer relationship intangible assets, which are acquired through either business combinations or acquisitions of customer relationships, are amortized over periods ranging from 10 to 30 years (weighted average of 17 years at December 31, 2019 ) and are included in depreciation and amortization in the accompanying Consolidated Statements of Operations. The value of customer relationship intangible assets is calculated based upon estimates of their fair value. ii. Customer Inducements Upon the adoption of ASU 2014-09, free intake costs to transport boxes to one of our facilities, which include labor and transportation costs ("Free Move Costs"), are considered a Contract Fulfillment Cost (as defined in Note 2.l.) and, therefore, are now deferred and amortized and included in amortization expense over three years , consistent with the transfer of the performance obligation to the customer to which the asset relates. See Note 2.l. for information regarding the accounting for Free Move Costs, which are now a component of Intake Costs (as defined in Note 2.l.), following the adoption of ASU 2014-09. Payments that are made to a customer's current records management vendor in order to terminate the customer's existing contract with that vendor, or direct payments to a customer ("Permanent Withdrawal Fees"), are amortized over periods ranging from five to 15 years (weighted average of seven years as of December 31, 2019 ) and are included in storage and service revenue in the accompanying Consolidated Statements of Operations. Our accounting for Permanent Withdrawal Fees did not change as a result of the adoption of ASU 2014-09. Free Move Costs (prior to the adoption of ASU 2014-09) and Permanent Withdrawal Fees are collectively referred to as "Customer Inducements". If the customer terminates its relationship with us, the unamortized carrying value of the Customer Inducement intangible asset is charged to expense or revenue. However, in the event of such termination, we generally collect, and record as income, permanent removal fees that generally equal or exceed the amount of the unamortized Customer Inducement intangible asset. iii. Data Center Intangible Assets and Liabilities Finite-lived intangible assets associated with our Global Data Center Business consist of the following: Data Center In-Place Lease Intangible Assets and Data Center Tenant Relationship Intangible Assets Data Center In-Place Lease Intangible Assets (“Data Center In-Place Leases”) and Data Center Tenant Relationship Intangible Assets (“Data Center Tenant Relationships") are acquired through either business combinations or asset acquisitions in our Global Data Center Business. These intangible assets reflect the value associated with acquiring a data center operation with active tenants as of the date of acquisition. The value of Data Center In-Place Leases is determined based upon an estimate of the economic costs (such as lost revenues, tenant improvement costs, commissions, legal expenses and other costs to acquire new data center leases) avoided by acquiring a data center operation with active tenants that would have otherwise been incurred if the data center operation was purchased vacant. Data Center In-Place Leases are amortized over the weighted average remaining term of the acquired data center leases (weighted average of five years as of December 31, 2019 ) and are included in depreciation and amortization in the accompanying Consolidated Statements of Operations. The value of Data Center Tenant Relationships is determined based upon an estimate of the economic costs avoided upon lease renewal of the acquired tenants, based upon expectations of lease renewal. Data Center Tenant Relationships are amortized over the weighted average remaining anticipated life of the relationship with the acquired tenant (weighted average of eight years as of December 31, 2019 ) and are included in depreciation and amortization in the accompanying Consolidated Statements of Operations. Data Center In-Place Leases and Data Center Tenant Relationships are included in Customer relationships, customer inducements and data center lease-based intangibles in the accompanying Consolidated Balance Sheets. Data Center Above-Market and Below-Market In-Place Lease Intangible Assets Data Center Above-Market In-Place Lease Intangible Assets (“Data Center Above-Market Leases”) and Data Center Below-Market In-Place Lease Intangible Assets (“Data Center Below-Market Leases”) are acquired through either business combinations or asset acquisitions in our Global Data Center Business. We record Data Center Above-Market Leases and Data Center Below-Market Leases at the net present value of the difference between (i) the contractual amounts to be paid pursuant to each in-place lease and (ii) management’s estimate of the fair market lease rates for each corresponding in-place lease. Data Center Above-Market Leases (weighted average of four years as of December 31, 2019 ) and Data Center Below-Market Leases (weighted average of nine years as of December 31, 2019 ) are amortized over the remaining non-cancellable term of the acquired in-place lease to storage revenue in the accompanying Consolidated Statements of Operations. Data Center Above-Market Leases are included in Customer relationships, customer inducements and data center lease-based intangibles in the accompanying Consolidated Balance Sheets. Data Center Below-Market Leases are included in Other long-term liabilities in the accompanying Consolidated Balance Sheets. The gross carrying amount and accumulated amortization of our finite-lived intangible assets as of December 31, 2019 and 2018 , respectively, are as follows: December 31, 2019 December 31, 2018 Gross Carrying Accumulated Net Carrying Gross Carrying Accumulated Net Carrying Assets: Customer relationship intangible assets $ 1,751,848 $ (544,721 ) $ 1,207,127 $ 1,718,919 $ (455,705 ) $ 1,263,214 Customer inducements 52,718 (29,397 ) 23,321 56,478 (34,181 ) 22,297 Data center lease-based intangible assets(1) 265,945 (103,210 ) 162,735 271,818 (50,807 ) 221,011 Third-party commissions asset(2) 31,708 (4,134 ) 27,574 30,071 (1,089 ) 28,982 $ 2,102,219 $ (681,462 ) $ 1,420,757 $ 2,077,286 $ (541,782 ) $ 1,535,504 Liabilities: Data center below-market leases $ 12,750 $ (3,937 ) $ 8,813 $ 12,318 $ (1,642 ) $ 10,676 _______________________________________________________________________________ (1) Includes Data Center In-Place Leases, Data Center Tenant Relationships and Data Center Above-Market Leases. (2) Third-party commissions asset is included in Other, a component of Other assets, net in the accompanying Consolidated Balance Sheets as of December 31, 2019 and 2018 . See Note 6 for additional information on the third-party commissions asset. Other finite-lived intangible assets, including trade names, noncompetition agreements and trademarks, are capitalized and amortized over a weighted average of four years as of December 31, 2019 , and are included in depreciation and amortization in the accompanying Consolidated Statements of Operations. December 31, 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) $ 19,893 $ (18,405 ) $ 1,488 $ 20,310 $ (14,798 ) $ 5,512 Amortization expense associated with finite-lived intangible assets, revenue reduction associated with the amortization of Permanent Withdrawal Fees and net revenue reduction associated with the amortization of Data Center Above-Market Leases and Data Center Below-Market Leases for the years ended December 31, 2019 , 2018 and 2017 are as follows: Year Ended December 31, 2019 2018 2017 Amortization expense included in depreciation and amortization associated with: Customer relationship and customer inducement intangible assets $ 117,972 $ 113,782 $ 109,563 Data center in-place leases and tenant relationships 46,696 43,061 — Third-party commissions asset and other finite-lived intangible assets 7,957 5,713 6,530 Revenue reduction associated with amortization of: Permanent withdrawal fees $ 9,993 $ 11,408 $ 11,253 Data center above-market leases and data center below-market leases 3,710 4,873 — Estimated amortization expense for existing finite-lived intangible assets (excluding deferred financing costs, as disclosed in Note 2.j. and Contract Fulfillment Costs, as defined and disclosed in Note 2.l.) is as follows: Estimated Amortization Included in Depreciation Revenue Reduction Associated with the Amortization of Permanent Withdrawal Fees Revenue Reduction (Increase) Associated with Amortization of Data Center Above-market leases and Below-market leases 2020 $ 160,865 $ 7,760 $ 872 2021 157,647 5,207 234 2022 127,148 3,200 273 2023 121,256 2,112 (470 ) 2024 116,253 1,125 (610 ) Thereafter 712,369 1,303 (3,112 ) j. Deferred Financing Costs Deferred financing costs are amortized over the life of the related debt. If debt is retired early, the related unamortized deferred financing costs are written-off in the period the debt is retired to Other expense (income), net. As of December 31, 2019 and 2018 , the gross carrying amount of deferred financing costs was $144,981 and $128,469 , respectively, and accumulated amortization of those costs was $58,016 and $41,862 , respectively. Unamortized deferred financing costs are included as a component of Long-term debt in our Consolidated Balance Sheets. Estimated amortization expense for deferred financing costs, which are amortized as a component of interest expense, is as follows: Estimated Amortization of Deferred Financing Costs 2020 $ 17,132 2021 16,002 2022 14,888 2023 11,618 2024 8,424 Thereafter 18,901 k. Prepaid Expenses and Accrued Expenses There are no prepaid expenses with items greater than 5% of total current assets as of December 31, 2019 and 2018 . Accrued expenses, with items greater than 5% of total current liabilities are shown separately, and consist of the following: December 31, 2019 2018 Interest $ 97,987 $ 84,283 Incentive compensation 56,662 75,256 Sales tax and VAT payable 115,352 124,232 Dividend 186,021 181,986 Operating lease liabilities 223,249 — Other 282,481 315,024 Accrued expenses $ 961,752 $ 780,781 l. Revenues Our revenues consist of storage rental revenues as well as service revenues and are reflected net of sales and value-added taxes. Storage rental revenues, which are considered a key driver of financial performance for the storage and information management services industry, consist primarily of recurring periodic rental charges

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	Derivative instruments we are party to include: (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 December 31, 2019 and 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 December 31, 2019 and 2018 , we had a derivative liability of $8,774 and $973 , respectively, which was recorded as a component of Other long-term liabilities in our Consolidated Balance Sheets. We have recorded the change in fair value of the interest rate swap agreements as a component of Accumulated other comprehensive items, net in our Consolidated Balance Sheets. We have recorded unrealized losses of $7,801 and $973 for the years ended December 31, 2019 and 2018 , respectively. As of December 31, 2019 , cumulative net losses of $8,774 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 items, net. Unrealized gains are recognized as assets while unrecognized losses are recognized as liabilities. At December 31, 2019 we had a derivative liability of $982 , which was recorded as a component of Other long-term liabilities in our Consolidated Balance Sheets, which represents the fair value of the cross-currency swap agreements. We have recorded unrealized losses of $982 for the year ended December 31, 2019 . b. Euro Notes Designated as a Hedge of Net Investment In addition, we have designated a portion of our Euro Notes (as defined in Note 4) as a hedge of net investment of certain of our Euro denominated subsidiaries. For the years ended December 31, 2019 , 2018 and 2017 we designated, on average, 284,986 , 224,424 and 103,682 Euros, respectively, of our Euro Notes as a hedge of net investment of certain of our Euro denominated subsidiaries. As a result, we recorded the following foreign exchange gains (losses) related to the change in fair value of such debt due to the currency translation adjustments, which is a component of Accumulated other comprehensive items, net: Year Ended December 31, 2019 2018 2017 Foreign exchange gains (losses) $ 6,003 $ 11,070 $ (15,015 ) As of December 31, 2019 , cumulative net gains of $20,261 , 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 December 31, 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 is recorded as a component of Prepaid expenses and other in our Consolidated Balance Sheet. Net cash payments (receipts) included in cash from operating activities related to settlements associated with foreign currency forward contracts for the years ended December 31, 2019 , 2018 and 2017 , are as follows: Year Ended December 31, 2019 2018 2017 Net payments (receipts) $ 737 $ 5,797 $ (9,073 ) Losses (gains) for our derivative instruments for the years ended December 31, 2019 , 2018 and 2017 are as follows: Amount of Loss (Gain) Recognized in Income on Derivatives December 31, Derivatives Not Designated as Hedging Instruments Location of Loss (Gain) Recognized in Income on Derivative 2019 2018 2017 Foreign exchange contracts Other expense (income), net $ 737 $ 4,954 $ (8,292 )

Debt

Debt	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Debt	Long-term debt is as follows: December 31, 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) $ 348,808 $ (12,053 ) $ 336,755 $ 348,808 $ 793,832 $ (14,117 ) $ 779,715 $ 793,832 Term Loan A(1) 228,125 — 228,125 228,125 240,625 — 240,625 240,625 Term Loan B(1)(2) 686,395 (7,493 ) 678,902 686,890 693,169 (8,742 ) 684,427 660,013 Australian Dollar Term Loan (the "AUD Term Loan")(3)(4) 226,924 (2,313 ) 224,611 228,156 233,955 (3,084 ) 230,871 235,645 UK Bilateral Revolving Credit Facility (the "UK Bilateral Facility")(4) 184,601 (1,801 ) 182,800 184,601 178,299 (2,357 ) 175,942 178,299 4 3 / 8 % Senior Notes due 2021 (the "4 3 / 8 % Notes")(5)(6)(7) 500,000 (2,436 ) 497,564 503,450 500,000 (4,155 ) 495,845 488,750 6% Senior Notes due 2023 (the "6% Notes due 2023")(5)(6) 600,000 (4,027 ) 595,973 613,500 600,000 (5,126 ) 594,874 606,000 5 3 / 8 % CAD Senior Notes due 2023 (the "CAD Notes due 2023")(5)(7)(8) 192,058 (2,071 ) 189,987 199,380 183,403 (2,506 ) 180,897 186,154 5 3 / 4 % Senior Subordinated Notes due 2024 (the "5 3 / 4 % Notes")(5)(6) 1,000,000 (6,409 ) 993,591 1,010,625 1,000,000 (7,782 ) 992,218 940,000 3% Euro Senior Notes due 2025 (the "Euro Notes")(5)(6)(7) 336,468 (3,462 ) 333,006 345,660 343,347 (4,098 ) 339,249 321,029 3 7 / 8 % GBP Senior Notes due 2025 (the "GBP Notes due 2025")(5)(7)(9) 527,432 (5,809 ) 521,623 539,892 509,425 (6,573 ) 502,852 453,811 5 3 / 8 % Senior Notes due 2026 (the "5 3 / 8 % Notes")(5)(7)(10) 250,000 (2,756 ) 247,244 261,641 250,000 (3,185 ) 246,815 224,375 4 7 / 8 % Senior Notes due 2027 (the "4 7 / 8 % Notes due 2027")(5)(6)(7) 1,000,000 (11,020 ) 988,980 1,029,475 1,000,000 (12,442 ) 987,558 855,000 5 1 / 4 % Senior Notes due 2028 (the "5 1 / 4 % Notes")(5)(6)(7) 825,000 (9,742 ) 815,258 859,598 825,000 (10,923 ) 814,077 713,625 4 7 / 8 % Senior Notes due 2029 (the "4 7 / 8 % Notes due 2029")(5)(6)(7) 1,000,000 (14,104 ) 985,896 1,015,640 — — — — Real Estate Mortgages, Financing Lease Liabilities and Other(11) 523,671 (406 ) 523,265 523,671 606,702 (171 ) 606,531 606,702 Accounts Receivable Securitization Program(12) 272,062 (81 ) 271,981 272,062 221,673 (218 ) 221,455 221,673 Mortgage Securitization Program(13) 50,000 (982 ) 49,018 50,000 50,000 (1,128 ) 48,872 50,000 Total Long-term Debt 8,751,544 (86,965 ) 8,664,579 8,229,430 (86,607 ) 8,142,823 Less Current Portion (389,013 ) — (389,013 ) (126,406 ) — (126,406 ) Long-term Debt, Net of Current Portion $ 8,362,531 $ (86,965 ) $ 8,275,566 $ 8,103,024 $ (86,607 ) $ 8,016,417 ______________________________________________________________ (1) The capital stock or other equity interests of most of our United States subsidiaries, and up to 66% of the capital stock or other equity interests of most of our first-tier foreign subsidiaries, are pledged to secure these debt instruments, together with all intercompany obligations (including promissory notes) of subsidiaries owed to us or to one of our United States subsidiary guarantors. In addition, Iron Mountain Canada Operations ULC ("Canada Company") has pledged 66% of the capital stock of its subsidiaries, and all intercompany obligations (including promissory notes) owed to or held by it, to secure the Canadian dollar subfacility under the Revolving Credit Facility. The fair value (Level 3 of fair value hierarchy described at Note 2.s.) of these debt instruments approximates the carrying value (as borrowings under these debt instruments are based on current variable market interest rates (plus a margin that is subject to change based on our consolidated leverage ratio), as of December 31, 2019 and 2018 . (2) The amount of debt for the Term Loan B (as defined below) reflects an unamortized original issue discount of $1,355 and $1,581 as of December 31, 2019 and 2018 , respectively. (3) The amount of debt for the AUD Term Loan reflects an unamortized original issue discount of $ 1,232 and $1,690 as of December 31, 2019 and 2018 , respectively. (4) The fair value (Level 3 of fair value hierarchy described at Note 2.s.) of this debt instrument approximates the carrying value as borrowings under this debt instrument are based on a current variable market interest rate. (5) The fair values (Level 1 of fair value hierarchy described at Note 2.s.) of these debt instruments are based on quoted market prices for these notes on December 31, 2019 and 2018 , respectively. (6) Collectively, the "Parent Notes". IMI is the direct obligor on the Parent Notes, which are fully and unconditionally guaranteed, on a senior or senior subordinated basis, as the case may be, by IMI's direct and indirect 100% owned United States subsidiaries that represent the substantial majority of our United States operations (the "Guarantors"). These guarantees are joint and several obligations of the Guarantors. The remainder of our subsidiaries do not guarantee the Parent Notes. See Note 5. (7) The 4 3 / 8 % Notes, the CAD Notes due 2023, the Euro Notes, the GBP Notes due 2025, the 5 3 / 8 % Notes, the 4 7 / 8 % Notes due 2027, the 5 1 / 4 % Notes and the 4 7 / 8 % Notes due 2029 (collectively, the "Unregistered Notes") have not been registered under the Securities Act of 1933, as amended (the “Securities Act”), or under the securities laws of any other jurisdiction. Unless they are registered, the Unregistered Notes may be offered only in transactions that are exempt from registration under the Securities Act or the securities laws of any other jurisdiction. (8) Canada Company is the direct obligor on the CAD Notes due 2023, which are fully and unconditionally guaranteed, on a senior basis, by IMI and the Guarantors. These guarantees are joint and several obligations of IMI and the Guarantors. See Note 5. (9) Iron Mountain (UK) PLC ("IM UK") is the direct obligor on the GBP Notes due 2025, which are fully and unconditionally guaranteed, on a senior basis, by IMI and the Guarantors. These guarantees are joint and several obligations of IMI and the Guarantors. See Note 5. (10) Iron Mountain US Holdings, Inc. ("IM US Holdings"), one of the Guarantors, is the direct obligor on the 5 3 / 8 % Notes, which are fully and unconditionally guaranteed, on a senior basis, by IMI and the other Guarantors. These guarantees are joint and several obligations of IMI and such Guarantors. See Note 5. (11) Includes (i) real estate mortgages of $27,036 and $18,576 as of December 31, 2019 and 2018 , respectively, which bear interest at approximately 3.9% as of December 31, 2019 and 4.1% as of December 31, 2018 and are payable in various installments through 2024, (ii) financing lease liabilities of $367,182 and $447,173 as of December 31, 2019 and 2018 , respectively, which bear a weighted average interest rate of 5.7% at December 31, 2019 and 2018 and (iii) other notes and other obligations, which were assumed by us as a result of certain acquisitions, of $129,453 and $140,953 as of December 31, 2019 and 2018 , respectively, and bear a weighted average interest rate of 10.8% at December 31, 2019 and 11.1% at December 31, 2018 , respectively. We believe the fair value (Level 3 of fair value hierarchy described at Note 2.s.) of this debt approximates its carrying value. (12) The Accounts Receivable Securitization Special Purpose Subsidiaries are the obligors under this program. We believe the fair value (Level 3 of fair value hierarchy described at Note 2.s.) of this debt approximates its carrying value. (13) The Mortgage Securitization Special Purpose Subsidiary is the obligor under this program. We believe the fair value (Level 3 of fair value hierarchy described at Note 2.s.) of this debt approximates its carrying value. a. Credit Agreement On August 21, 2017, we entered into a new credit agreement (the "Credit Agreement") which amended and restated our then existing credit agreement which consisted of a revolving credit facility (the "Former Revolving Credit Facility") and a term loan and was scheduled to terminate on July 6, 2019. The Credit Agreement consists of a revolving credit facility (the "Revolving Credit Facility") and a term loan (the "Term Loan A"). The maximum amount permitted to be borrowed under the Revolving Credit Facility is $1,750,000 . The original principal amount of the Term Loan A was $250,000 . Under the Revolving Credit Facility, we had the option to request additional commitments of up to $500,000 , in the form of term loans or through increased commitments under the Revolving Credit Facility, subject to the conditions specified in the Credit Agreement. The Credit Agreement was originally scheduled to mature on August 21, 2022, at which point all obligations were to become due. On March 22, 2018, we entered into an amendment (the “March 2018 Amendment”) to the Credit Agreement which provided us with the option to request additional commitments of up to approximately $1,260,000 under the Credit Agreement in the form of term loans or through increased commitments under the Revolving Credit Facility, subject to the conditions specified in the Credit Agreement. On June 4, 2018, we entered into another amendment (the "June 2018 Amendment") to the Credit Agreement which (i) reduced interest rate margins applicable to existing and future borrowings under the Revolving Credit Facility and Term Loan A by 0.25% and (ii) extended the maturity date of the Credit Agreement to June 4, 2023. The Term Loan A is to be paid in quarterly installments in an amount equal to $3,125 per quarter, with the remaining balance due on June 4, 2023. On December 20, 2019, we entered into an amendment (the “December 2019 Amendment”) to the Credit Agreement. The December 2019 Amendment amended the definition of EBITDA and certain other definitions and restrictive covenants contained in the Credit Agreement. The Revolving Credit Facility enables IMI and certain of its United States and foreign subsidiaries to borrow in United States dollars and (subject to sublimits) a variety of other currencies (including Canadian dollars, British pounds sterling and Euros, among other currencies) in an aggregate outstanding amount not to exceed $1,750,000 . IMI and the Guarantors guarantee all obligations under the Credit Agreement. The interest rate on borrowings under the Credit Agreement varies depending on our choice of interest rate and currency options, plus an applicable margin, which varies based on our consolidated leverage ratio. Additionally, the Credit Agreement requires the payment of a commitment fee on the unused portion of the Revolving Credit Facility, which fee ranges from between 0.25% to 0.4% based on our consolidated leverage ratio and fees associated with outstanding letters of credit. As of December 31, 2019 , we had $348,808 and $228,125 of outstanding borrowings under the Revolving Credit Facility and the Term Loan A, respectively. Of the $348,808 of outstanding borrowings under the Revolving Credit Facility, $257,800 was denominated in United States dollars, 44,300 was denominated in Canadian dollars and 50,800 was denominated in Euros. In addition, we also had various outstanding letters of credit totaling $4,853 under the Revolving Credit Facility. The remaining amount available for borrowing under the Revolving Credit Facility as of December 31, 2019 , which is based on IMI's leverage ratio, the last 12 months' earnings before interest, taxes, depreciation and amortization and rent expense ("EBITDAR"), other adjustments as defined in the Credit Agreement and current external debt, was $1,396,339 (which amount represents the maximum availability as of such date). Available borrowings under the Revolving Credit Facility are subject to compliance with our indenture covenants as described more fully in Note 4.i. The average interest rate in effect under the Credit Agreement was 3.3% as of December 31, 2019 . The average interest rate in effect under the Revolving Credit Facility was 3.2% as of December 31, 2019 and the interest rate in effect under the Term Loan A as of December 31, 2019 was 3.5% . In connection with the March 2018 Amendment, IMI's wholly owned subsidiary, 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 original principal amount of $700,000 (the “Term Loan B”). On March 26, 2018, IMIM borrowed the full amount of the Term Loan B, which matures on January 2, 2026. The Term Loan B was issued at 99.75% of par. The aggregate net proceeds of approximately $689,850 , after paying commissions to the joint lead arrangers and net of the original discount, were used to repay outstanding borrowings under the Revolving Credit Facility. The Term Loan B holders benefit from the same security and guarantees as other borrowings under the Credit Agreement. The Term Loan B holders also benefit from the same affirmative and negative covenants as other borrowings under the Credit Agreement; however, the Term Loan B holders are not generally entitled to the benefits of the financial covenants under the Credit Agreement. Principal payments on the Term Loan B are to be paid in quarterly installments of $1,750 per quarter during the period June 30, 2018 through December 31, 2025, with the balance due on January 2, 2026. The Term Loan B may be prepaid without penalty at any time. The Term Loan B bears interest at a rate of LIBOR plus 1.75% . The interest rate in effect under Term Loan B as of December 31, 2019 was 3.6% . b. Notes Issued under Indentures As of December 31, 2019 , we had 10 series of senior subordinated or senior notes issued under various indentures, seven of which are direct obligations of the parent company, IMI; one of which (the 5 3 / 8 % Notes) is a direct obligation of IM US Holdings; one of which (the CAD Notes due 2023) is a direct obligation of Canada Company; and one of which (the GBP Notes due 2025) is a direct obligation of IM UK. Each series of notes shown below (i) is effectively subordinated to all of our secured indebtedness, including under the Credit Agreement, to the extent of the value of the collateral securing such indebtedness, (ii) ranks pari passu in right of payment with each other and with debt outstanding under the Credit Agreement, except the 5 3 / 4 % Notes which are subordinated in right of payment to the Credit Agreement, the senior notes shown below and other "Senior Debt" as defined in, and to the extent set forth in, our indenture for the 5 3 / 4 % Notes, and (iii) is structurally subordinated to all liabilities of our subsidiaries that do not guarantee such series of notes: • 4 3 / 8 % Notes: $500,000 principal amount of senior notes maturing on June 1, 2021 and bearing interest at a rate of 4 3 / 8 % per annum, payable semi-annually in arrears on December 1 and June 1; • 6% Notes due 2023: $600,000 principal amount of senior notes maturing on August 15, 2023 and bearing interest at a rate of 6% per annum, payable semi-annually in arrears on February 15 and August 15; • CAD Notes due 2023: 250,000 CAD principal amount of senior notes maturing on September 15, 2023 and bearing interest at a rate of 5 3 / 8 % per annum, payable semi-annually in arrears on March 15 and September 15; • 5 3 / 4 % Notes: $1,000,000 principal amount of senior subordinated notes maturing on August 15, 2024 and bearing interest at a rate of 5 3 / 4 % per annum, payable semi-annually in arrears on February 15 and August 15; • Euro Notes: 300,000 Euro principal amount of senior notes maturing on January 15, 2025 and bearing interest at a rate of 3% per annum, payable semi-annually in arrears on January 15 and July 15; • GBP Notes due 2025: 400,000 British pounds sterling principal amount of senior notes maturing on November 15, 2025 and bearing interest at a rate of 3 7 / 8 % per annum, payable semi-annually in arrears on May 15 and November 15; • 5 3 / 8 % Notes: $250,000 principal amount of senior notes maturing on June 1, 2026 and bearing interest at a rate of 5 3 / 8 % per annum, payable semi-annually in arrears on December 1 and June 1; • 4 7 / 8 % Notes due 2027: $1,000,000 principal amount of senior notes maturing on September 15, 2027 and bearing interest at a rate of 4 7 / 8 % per annum, payable semi-annually in arrears on March 15 and September 15; • 5 1 / 4 % Notes: $825,000 principal amount of senior notes maturing on March 15, 2028 and bearing interest at a rate of 5 1 / 4 % per annum, payable semi-annually in arrears on March 15 and September 15; and • 4 7 / 8 % Notes due 2029: $1,000,000 principal amount of senior notes maturing on September 15, 2029 and bearing interest at a rate of 4 7 / 8 % per annum, payable semi-annually in arrears on March 15 and September 15. In May 2017, IMI completed a private offering of 300,000 Euros in aggregate principal amount of the Euro Notes, which were issued at par. The net proceeds to IMI from the Euro Notes of 296,250 Euros (or $332,683 , based upon the exchange rate between the Euro and the United States dollar on May 23, 2017 (the settlement date for the Euro Notes)), after paying the initial purchasers' commissions, were used to repay outstanding borrowings under the Former Revolving Credit Facility. In August 2017, we redeemed all of the 200,000 Canadian dollars in aggregate principal outstanding of the 6 1 / 8 % CAD Senior Notes due 2021 (the "CAD Notes due 2021") (approximately $157,458 , based upon the exchange rate between the Canadian dollar and the United States dollar on August 15, 2017 (the redemption date for the CAD Notes due 2021)) at 103.063% of par, plus accrued and unpaid interest to, but excluding the redemption date, utilizing borrowings under the Former Revolving Credit Facility. We recorded a charge of $6,354 to Other expense (income), net in the third quarter of 2017 related to the early extinguishment of this debt, representing the call premium associated with the early redemption, as well as a write-off of unamortized deferred financing costs. In September 2017, IMI completed a private offering of $1,000,000 in aggregate principal amount of the 4 7 / 8 % Notes due 2027, which were issued at par. The net proceeds of approximately $987,500 from the 4 7 / 8 % Notes due 2027 after deducting discounts to the initial purchasers, together with borrowings under the Revolving Credit Facility, were used to fund the redemption of all of the 6% Notes due 2020. In September 2017, we redeemed all of the $1,000,000 in aggregate principal outstanding of the 6% Notes due 2020 at 103.155% of par, plus accrued and unpaid interest to, but excluding, the redemption date. We recorded a charge of $41,738 to Other expense (income), net in the third quarter of 2017 related to the early extinguishment of this debt, representing the call premium associated with the early redemption, as well as a write-off of unamortized deferred financing costs. In November 2017, IM UK completed a private offering of 400,000 British pounds sterling in aggregate principal amount of the GBP Notes due 2025, which were issued at 100% of par. The net proceeds to IM UK of 395,000 British pounds sterling (or $522,077 , based upon the exchange rate between the British pounds sterling and the United States dollar on November 13, 2017 (the settlement date for the GBP Notes due 2025)), after deducting discounts to the initial purchasers, were used, together with borrowings under the Revolving Credit Facility, to fund the redemption of all the GBP Notes due 2022. In November 2017, we redeemed all of the GBP Notes due 2022 at 104.594% of par, plus accrued and unpaid interest to, but excluding, the redemption date. We recorded a charge of $30,056 to Other expense (income), net in the fourth quarter of 2017 related to the early extinguishment of this debt, representing the call premium associated with the early redemption, as well as a write-off of unamortized deferred financing costs. In December 2017, IMI completed a private offering of $825,000 in aggregate principal amount of the 5 1 / 4 % Notes. The 5 1 / 4 % Notes were issued at par. The net proceeds of approximately $814,688 from the 5 1 / 4 % Notes after deducting discounts to the initial purchasers, together with the net proceeds from the Equity Offering and the Over-Allotment Option (each as defined in Note 12), were used to finance the purchase price of the IODC Transaction, which closed on January 10, 2018, and to pay related fees and expenses. At December 31, 2017, the net proceeds from the 5 1 / 4 % Notes, together with the net proceeds of the Equity Offering, were used to temporarily repay borrowings under our Revolving Credit Facility and invest in money market funds. 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 paying the initial purchasers' commissions, were used to repay outstanding borrowings under the Revolving Credit Facility. Each of the indentures for the notes provides that we may redeem the outstanding notes, in whole or in part, upon satisfaction of certain terms and conditions. In any redemption, we are also required to pay all accrued but unpaid interest on the outstanding notes. The following table presents the various redemption dates and prices of the senior or senior subordinated notes. The redemption dates reflect the date at or after which the notes may be redeemed at our option at a premium redemption price. After these dates, the notes may be redeemed at 100% of face value: Redemption Date 4 3 / 8 % Notes June 1, 6% Notes CAD Notes 5 3 / 4 % Notes Euro Notes GBP Notes 5 3 / 8 % Notes June 1, 4 7 / 8 % Notes due 2027 5 1 / 4 % Notes 4 7 / 8 % Notes due 2029 2019 101.094 % (1) 102.000 % (1) 104.031 % (1) 100.958 % (1) — — — — — — 2020 100.000 % 101.000 % 102.688 % 100.000 % 101.500 % (1) 101.938 % (1) — — — — 2021 100.000 % 100.000 % 101.344 % 100.000 % 100.750 % 100.969 % 102.688 % (1) — — — 2022 — 100.000 % 100.000 % 100.000 % 100.000 % 100.000 % 101.792 % 102.438 % (1) 102.625 % (1) — 2023 — 100.000 % 100.000 % 100.000 % 100.000 % 100.000 % 100.896 % 101.625 % 101.750 % — 2024 — — — 100.000 % 100.000 % 100.000 % 100.000 % 100.813 % 100.875 % 102.438 % (1) 2025 — — — — 100.000 % 100.000 % 100.000 % 100.000 % 100.000 % 101.609 % 2026 — — — — — — 100.000 % 100.000 % 100.000 % 100.814 % 2027 — — — — — — — 100.000 % 100.000 % 100.000 % 2028 — — — — — — — — 100.000 % 100.000 % 2029 — — — — — — — — — 100.000 % _______________________________________________________________________________ (1) Prior to this date, the relevant notes are redeemable, at our option, in whole or in part, at a specified redemption price or make-whole price, as the case may be. Each of the indentures for the notes provides that we must repurchase, at the option of the holders, the notes at 101% of their principal amount, plus accrued and unpaid interest, upon the occurrence of a "Change of Control," which is defined in each respective indenture. Except for required repurchases upon the occurrence of a Change of Control or in the event of certain asset sales, each as described in the respective indenture, we are not required to make sinking fund or redemption payments with respect to any of the notes. c. Australian Dollar Term Loan On March 27, 2018, Iron Mountain Australia Group Pty, Ltd. ("IM Australia"), a wholly owned subsidiary of IMI, amended its AUD Term Loan (the "AUD Term Loan Amendment") to (i) increase the borrowings under the AUD Term Loan from 250,000 Australian dollars to 350,000 Australian dollars; (ii) increase the quarterly principal payments from 6,250 Australian dollars per year to 8,750 Australian dollars per year; and (iii) decrease the interest rate on the AUD Term Loan from BBSY (an Australian benchmark variable interest rate) plus 4.3% to BBSY plus 3.875% . The AUD Term Loan matures in September 2022. All indebtedness associated with the AUD Term Loan was issued at 99% of par. The net proceeds associated with the AUD Term Loan Amendment of approximately 99,000 Australian dollars (or approximately $75,600 , based upon the exchange rate between the Australian dollar and the United States dollar on March 29, 2018 (the closing date of the AUD Term Loan Amendment)), net of the original discount, were used to repay outstanding borrowings under the Revolving Credit Facility. Principal payments on the AUD Term Loan are to be paid in quarterly installments in an amount equivalent to an aggregate of 8,750 Australian dollars per year, with the remaining balance due September 22, 2022. The AUD Term Loan is secured by substantially all assets of IM Australia. IMI and the Guarantors guarantee all obligations under the AUD Term Loan. As of December 31, 2019 , we had 325,313 Australian dollars ( $228,156 based upon the exchange rate between the United States dollar and the Australian dollar as of December 31, 2019 ) outstanding on the AUD Term Loan. As of December 31, 2018 , we had 334,063 Australian dollars ( $235,645 based upon the exchange rate between the United States dollar and the Australian dollar as of December 31, 2018 ) outstanding on the AUD Term Loan. The interest rate in effect under the AUD Term Loan was 4.8% and 6.0% as of December 31, 2019 and 2018 , respectively. d. UK Bilateral Revolving Credit Facility On September 24, 2018, IM UK and Iron Mountain (UK) Data Centre Limited entered into a 140,000 British pounds sterling Revolving Credit Facility (the "UK Bilateral Facility") with Barclays Bank PLC. The maximum amount permitted to be borrowed under the UK Bilateral Facility is 140,000 British pounds sterling, and we have the option to request additional commitments of up to 125,000 British pounds sterling, subject to the conditions specified in the UK Bilateral Facility. The UK Bilateral Facility was fully utilized on September 24, 2018 (the closing date of the UK Bilateral Facility). The initial net proceeds received under the UK Bilateral Facility of 138,250 British pounds sterling (or approximately $180,300 , based upon the exchange rate between the British pound sterling and the United States dollar on September 24, 2018), net of upfront fees, were used to repay borrowings under the Revolving Credit Facility. The UK Bilateral Facility is secured by certain properties in the United Kingdom. IMI and the Guarantors guarantee all obligations under the UK Bilateral Facility. The UK Bilateral Facility is scheduled to mature on September 23, 2022, at which point all obligations become due. The UK Bilateral Facility contains an option to extend the maturity date for an additional year, subject to the conditions specified in the UK Bilateral Facility, including the lender's consent. The UK Bilateral Facility bears interest at a rate of LIBOR plus 2.25% . The interest rate in effect under the UK Bilateral Facility was 3.1% as of December 31, 2019 and 2018 . e. Accounts Receivable Securitization Program In March 2015, we entered into a $250,000 accounts receivable securitization program (the "Accounts Receivable Securitization Program") involving several of our wholly owned subsidiaries and certain financial institutions. Under the Accounts Receivable Securitization Program, certain of our subsidiaries sell substantially all of their United States accounts receivable balances to our wholly owned special purpose entities, Iron Mountain Receivables QRS, LLC and Iron Mountain Receivables TRS, LLC (the "Accounts Receivable Securitization Special Purpose Subsidiaries"). The Accounts Receivable Securitization Special Purpose Subsidiaries use the accounts receivable balances to collateralize loans obtained from certain financial institutions. The Accounts Receivable Securitization Special Purpose Subsidiaries are consolidated subsidiaries of IMI. The Accounts Receivable Securitization Program is accounted for as a collateralized financing activity, rather than a sale of assets, and therefore: (i) accounts receivable balances pledged as collateral are presented as assets and borrowings are presented as liabilities on our Consolidated Balance Sheets, (ii) our Consolidated Statements of Operations reflect the associated charges for bad debt expense related to pledged accounts receivable (a component of selling, general and administrative expenses) and reductions to revenue due to billing and service related credit memos issued to customers and related reserves, as well as interest expense associated with the collateralized borrowings and (iii) receipts from customers related to the underlying accounts receivable are reflected as operating cash flows and borrowings and repayments under the collateralized loans are reflected as financing cash flows within our Consolidated Statements of Cash Flows. IMIM retains the responsibility of servicing the accounts receivable balances pledged as collateral for the Accounts Receivable Securitization Program and IMI provides a performance guaranty. The maximum availability allowed is limited by eligible accounts receivable, as defined under the terms of the Accounts Receivable Securitization Program. On July 31, 2017, we amended the Accounts Receivable Securitization Program to (i) increase the maximum amount available from $250,000 to $275,000 and (ii) to extend the maturity date from March 6, 2018 to July 30, 2020, at which point all obligations become due. As the Accounts Receivable Securitization Program matures on July 30, 2020, the amount outstanding under the Accounts Receivable Securitization Program is classified within the current portion of long-term debt in our Consolidated Balance Sheet as of December 31, 2019 . As of December 31, 2019 and 2018 , the maximum availability allowed and amount outstanding under the Accounts Receivable Securitization Program was $272,062 and $221,673 , respectively. The interest rate in effect under the Accounts Receivable Securitization Program was 2.8% and 3.0% as of December 31, 2019 and 2018 , respectively. Commitment fees at a rate of 40 basis points are charged on amounts made available but not borrowed under the Accounts Receivable Securitization Program. f. Mortgage Securitization Program In October 2016, we entered into a $50,000 mortgage securitization program (the "Mortgage Securitization Program") involving certain of our wholly owned subsidiaries with Goldman Sachs Mortgage Company (“Goldman Sachs”). Under the Mortgage Securitization Program, IMIM contributed certain real estate assets to its wholly owned special purpose entity, Iron Mountain Mortgage Finance I, LLC (the "Mortgage Securitization Special Purpose Subsidiary"). The Mortgage Securitization Special Purpose Subsidiary then used the real estate to secure a collateralized loan obtained from Goldman Sachs. The Mortgage Securitization Special Purpose Subsidiary is a consolidated subsidiary of IMI. The Mortgage Securitization Program is accounted for as a collateralized financing activity, rather than a sale of assets, and therefore: (i) real estate assets pledged as collateral remain as assets and borrowings are presented as liabilities on our Consolidated Balance Sheets, (ii) our Consolidated Statements of Operations reflects the associated charges for depreciation expense related to the pledged real estate and interest expense associated with the collateralized borrowings and (iii) borrowings and repayments under the collateralized loans are reflected as financing cash flows within our Consolidated Statements of Cash Flows. The Mortgage Securitization Program is scheduled to terminate on November 6, 2026, at which point all obligations become due. The outstanding amount under the Mortgage Securitization Program was $50,000 at both December 31, 2019 and 2018 . The interest rate in effect under the Mortgage Securitization Program was 3.5% as of December 31, 2019 and 2018 . g. Cash Pooling Certain of our subsidiaries participate in cash pooling arrangements (the “Cash Pools”) with Bank Mendes Gans (“BMG”), an independently operated wholly owned subsidiary of ING Group, in order to help manage global liquidity requirements. Under the Cash Pools, cash deposited by participating subsidiaries with BMG is pledged as security against the debit balances of other participating subsidiaries, and legal rights of offset are provided and, therefore, amounts are presented in our Consolidated Ba

Selected Consolidated Financial

Selected Consolidated Financial Statements of Parent, Guarantors, and Non-Guarantors	12 Months Ended
	Dec. 31, 2019
Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors
Selected Consolidated Financial Statements of Parent, Guarantors, and Non-Guarantors	e following data summarizes the consolidating results of IMI on the equity method of accounting as of December 31, 2019 and 2018 and for the years ended December 31, 2019 , 2018 and 2017 and are prepared on the same basis as the consolidated financial statements. The Parent Notes, the CAD Notes due 2023, the GBP Notes due 2025 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 due 2023, which were issued by Canada Company, the GBP Notes, which were issued by IM UK, and the 5 3 / 8 % Notes, which were issued by IM US Holdings, 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 due 2023, 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 Consolidated Balance Sheets and equity in the earnings (losses) of subsidiaries, net of tax in the below Consolidated Statements of Operations and Comprehensive Income (Loss) with respect to the relevant Parent, Guarantors, Non-Guarantors and Eliminations columns also would change. CONSOLIDATED BALANCE SHEETS December 31, 2019 Parent Guarantors Non- Guarantors Eliminations Consolidated ASSETS Current Assets: Cash and cash equivalents(1) $ 105 $ 206,297 $ 163,858 $ (176,705 ) $ 193,555 Accounts receivable — 45,608 805,093 — 850,701 Intercompany receivable — 658,580 — (658,580 ) — Prepaid expenses and other — 104,164 87,948 (29 ) 192,083 Total Current Assets 105 1,014,649 1,056,899 (835,314 ) 1,236,339 Property, Plant and Equipment, Net 597 3,051,426 1,571,014 — 4,623,037 Other Assets, Net: Long-term notes receivable from affiliates and intercompany receivable 5,347,774 — — (5,347,774 ) — Investment in subsidiaries 1,966,978 1,063,178 — (3,030,156 ) — Goodwill — 2,855,424 1,629,785 — 4,485,209 Operating lease right-of-use assets — 986,362 882,739 — 1,869,101 Other — 911,803 691,327 — 1,603,130 Total Other Assets, Net 7,314,752 5,816,767 3,203,851 (8,377,930 ) 7,957,440 Total Assets $ 7,315,454 $ 9,882,842 $ 5,831,764 $ (9,213,244 ) $ 13,816,816 LIABILITIES AND EQUITY Intercompany Payable $ 338,794 $ — $ 319,786 $ (658,580 ) $ — Debit Balances Under Cash Pool — — 176,705 (176,705 ) — Current Portion of Long-term Debt — 51,868 337,174 (29 ) 389,013 Total Other Current Liabilities (includes current portion of operating lease liabilities) 292,673 704,109 563,714 — 1,560,496 Long-term Debt, Net of Current Portion 5,210,269 1,482,571 1,582,726 — 8,275,566 Long-Term Operating Lease Liabilities, Net of Current Portion — 915,840 812,846 — 1,728,686 Long-term Notes Payable to Affiliates and Intercompany Payable — 5,347,774 — (5,347,774 ) — Other Long-term Liabilities 9,756 62,525 258,865 — 331,146 Commitments and Contingencies (see Note 10) Redeemable Noncontrolling Interests (see Note 2.v.) — — 67,682 — 67,682 Total Iron Mountain Incorporated Stockholders' Equity 1,463,962 1,318,155 1,712,001 (3,030,156 ) 1,463,962 Noncontrolling Interests — — 265 — 265 Total Equity 1,463,962 1,318,155 1,712,266 (3,030,156 ) 1,464,227 Total Liabilities and Equity $ 7,315,454 $ 9,882,842 $ 5,831,764 $ (9,213,244 ) $ 13,816,816 ______________________________________________________________ (1) Included within Cash and Cash Equivalents at December 31, 2019 is approximately $198,300 and $0 of cash on deposit associated with our Cash Pools for the Guarantors and Non-Guarantors, respectively. See Note 4 for more information on our Cash Pools. CONSOLIDATED BALANCE SHEETS (Continued) December 31, 2018 Parent Guarantors Non- Guarantors 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 10) Redeemable Noncontrolling Interests (see Note 2.v.) — — 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 CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) Year Ended December 31, 2019 Parent Guarantors Non- Guarantors Eliminations Consolidated Revenues: Storage rental $ — $ 1,654,359 $ 1,026,728 $ — $ 2,681,087 Service — 978,227 603,270 — 1,581,497 Intercompany revenues — 4,668 20,233 (24,901 ) — Total Revenues — 2,637,254 1,650,231 (24,901 ) 4,262,584 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 1,048,514 784,801 — 1,833,315 Intercompany cost of sales — 20,233 4,668 (24,901 ) — Selling, general and administrative 444 679,964 311,256 — 991,664 Depreciation and amortization 91 410,524 247,586 — 658,201 Significant Acquisition Costs — 7,055 6,238 — 13,293 Restructuring Charges — 32,218 16,379 — 48,597 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (26,472 ) (37,352 ) — (63,824 ) Total Operating Expenses 535 2,172,036 1,333,576 (24,901 ) 3,481,246 Operating (Loss) Income (535 ) 465,218 316,655 — 781,338 Interest Expense (Income), Net 213,149 18,923 187,226 — 419,298 Other Expense (Income), Net 59 19,271 14,568 — 33,898 (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (213,743 ) 427,024 114,861 — 328,142 Provision (Benefit) for Income Taxes — 6,698 53,233 — 59,931 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (481,120 ) (64,490 ) — 545,610 — Income (Loss) from Continuing Operations 267,377 484,816 61,628 (545,610 ) 268,211 Income (Loss) from Discontinued Operations, Net of Tax — 120 (16 ) — 104 Net Income (Loss) 267,377 484,936 61,612 (545,610 ) 268,315 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 938 — 938 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 267,377 $ 484,936 $ 60,674 $ (545,610 ) $ 267,377 Net Income (Loss) $ 267,377 $ 484,936 $ 61,612 $ (545,610 ) $ 268,315 Other Comprehensive Income (Loss): Foreign Currency Translation Adjustment 6,003 — 5,991 — 11,994 Change in Fair Value of Derivative Instruments (8,783 ) — — — (8,783 ) Equity in Other Comprehensive (Loss) Income of Subsidiaries 5,863 5,714 — (11,577 ) — Total Other Comprehensive Income (Loss) 3,083 5,714 5,991 (11,577 ) 3,211 Comprehensive Income (Loss) 270,460 490,650 67,603 (557,187 ) 271,526 Comprehensive Income (Loss) Attributable to Noncontrolling Interests — — 1,066 — 1,066 Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 270,460 $ 490,650 $ 66,537 $ (557,187 ) $ 270,460 CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued) Year Ended December 31, 2018 Parent Guarantors Non- Guarantors Eliminations Consolidated Revenues: Storage rental $ — $ 1,606,346 $ 1,016,109 $ — $ 2,622,455 Service — 974,213 629,093 — 1,603,306 Intercompany revenues — 4,759 18,439 (23,198 ) — Total Revenues — 2,585,318 1,663,641 (23,198 ) 4,225,761 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 1,009,890 784,064 — 1,793,954 Intercompany cost of sales — 18,439 4,759 (23,198 ) — Selling, general and administrative (288 ) 679,740 327,531 — 1,006,983 Depreciation and amortization 122 404,574 234,818 — 639,514 Significant Acquisition Costs — 35,607 15,058 — 50,665 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (2,841 ) (70,781 ) — (73,622 ) Total Operating Expenses (166 ) 2,145,409 1,295,449 (23,198 ) 3,417,494 Operating Income (Loss) 166 439,909 368,192 — 808,267 Interest Expense (Income), Net 199,955 6,392 203,301 — 409,648 Other Expense (Income), Net 2,328 17,158 (31,178 ) — (11,692 ) (Loss) Income from Continuing Operations Before (Benefit) Provision for Income Taxes (202,117 ) 416,359 196,069 — 410,311 (Benefit) Provision for Income Taxes — (1,006 ) 43,759 — 42,753 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (556,050 ) (147,575 ) — 703,625 — Income (Loss) from Continuing Operations 353,933 564,940 152,310 (703,625 ) 367,558 (Loss) Income from Discontinued Operations, Net of Tax — (12,283 ) (144 ) — (12,427 ) Net Income (Loss) 353,933 552,657 152,166 (703,625 ) 355,131 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 1,198 — 1,198 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 353,933 $ 552,657 $ 150,968 $ (703,625 ) $ 353,933 Net Income (Loss) $ 353,933 $ 552,657 $ 152,166 $ (703,625 ) $ 355,131 Other Comprehensive (Loss) Income: Foreign Currency Translation Adjustment 11,070 — (175,177 ) — (164,107 ) Change in Fair Value of Derivative Instrument (973 ) — — — (973 ) Equity in Other Comprehensive (Loss) Income of Subsidiaries (171,772 ) (139,971 ) — 311,743 — Total Other Comprehensive (Loss) Income (161,675 ) (139,971 ) (175,177 ) 311,743 (165,080 ) Comprehensive Income (Loss) 192,258 412,686 (23,011 ) (391,882 ) 190,051 Comprehensive (Loss) Income Attributable to Noncontrolling Interests — — (2,207 ) — (2,207 ) Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 192,258 $ 412,686 $ (20,804 ) $ (391,882 ) $ 192,258 CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued) Year Ended December 31, 2017 Parent Guarantors Non- Guarantors Eliminations Consolidated Revenues: Storage rental $ — $ 1,443,219 $ 934,338 $ — $ 2,377,557 Service — 866,318 601,703 — 1,468,021 Intercompany revenues — 4,577 24,613 (29,190 ) — Total Revenues — 2,314,114 1,560,654 (29,190 ) 3,845,578 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 922,008 742,817 — 1,664,825 Intercompany cost of sales — 24,613 4,577 (29,190 ) — Selling, general and administrative 161 613,350 323,669 — 937,180 Depreciation and amortization 167 310,962 211,247 — 522,376 Significant Acquisition Costs — 52,621 32,280 — 84,901 Intangible impairments — 3,011 — — 3,011 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (1,001 ) 235 — (766 ) Total Operating Expenses 328 1,925,564 1,314,825 (29,190 ) 3,211,527 Operating (Loss) Income (328 ) 388,550 245,829 — 634,051 Interest Expense (Income), Net 163,541 7,606 182,498 — 353,645 Other Expense (Income), Net 47,176 9,178 23,075 — 79,429 (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (211,045 ) 371,766 40,256 — 200,977 Provision (Benefit) for Income Taxes — 3,988 18,974 — 22,962 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (381,158 ) (11,677 ) — 392,835 — Income (Loss) from Continuing Operations 170,113 379,455 21,282 (392,835 ) 178,015 (Loss) Income from Discontinued Operations, Net of Tax — (4,370 ) (1,921 ) — (6,291 ) Net Income (Loss) 170,113 375,085 19,361 (392,835 ) 171,724 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 1,611 — 1,611 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 170,113 $ 375,085 $ 17,750 $ (392,835 ) $ 170,113 Net Income (Loss) $ 170,113 $ 375,085 $ 19,361 $ (392,835 ) $ 171,724 Other Comprehensive Income (Loss): Foreign Currency Translation Adjustment (15,015 ) — 123,579 — 108,564 Equity in Other Comprehensive Income (Loss) of Subsidiaries 123,599 82,127 — (205,726 ) — Total Other Comprehensive Income (Loss) 108,584 82,127 123,579 (205,726 ) 108,564 Comprehensive Income (Loss) 278,697 457,212 142,940 (598,561 ) 280,288 Comprehensive Income (Loss) Attributable to Noncontrolling Interests — — 1,591 — 1,591 Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 278,697 $ 457,212 $ 141,349 $ (598,561 ) $ 278,697 CONSOLIDATED STATEMENTS OF CASH FLOWS Year Ended December 31, 2019 Parent Guarantors Non- Guarantors Eliminations Consolidated Cash Flows from Operating Activities: Cash Flows from Operating Activities-Continuing Operations $ (157,162 ) $ 850,840 $ 272,977 $ — $ 966,655 Cash Flows from Operating Activities-Discontinued Operations — — — — — Cash Flows from Operating Activities (157,162 ) 850,840 272,977 — 966,655 Cash Flows from Investing Activities: Capital expenditures — (412,725 ) (280,258 ) — (692,983 ) Cash paid for acquisitions, net of cash acquired — (9,508 ) (48,729 ) — (58,237 ) Intercompany loans to subsidiaries (124,897 ) 4,637 — 120,260 — Acquisitions of customer relationships, customer inducements and data center lease-based intangibles — (99,610 ) (32,037 ) — (131,647 ) Investment in joint ventures — (19,222 ) — — (19,222 ) Net proceeds from Divestments — — — — — Proceeds from sales of property and equipment and other, net (including real estate) and proceeds from involuntary conversion of property and equipment — 115,775 50,368 — 166,143 Cash Flows from Investing Activities-Continuing Operations (124,897 ) (420,653 ) (310,656 ) 120,260 (735,946 ) Cash Flows from Investing Activities-Discontinued Operations — 2,564 2,497 — 5,061 Cash Flows from Investing Activities (124,897 ) (418,089 ) (308,159 ) 120,260 (730,885 ) Cash Flows from Financing Activities: Repayment of revolving credit and term loan facilities and other debt — (10,479,101 ) (4,056,014 ) — (14,535,115 ) Proceeds from revolving credit and term loan facilities and other debt — 10,057,145 4,002,673 — 14,059,818 Net proceeds from sales of senior notes 987,500 — — — 987,500 Debit (payments) balances under cash pools — (10,612 ) 119,945 (109,333 ) — Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net — — (1,924 ) — (1,924 ) Intercompany loans from parent — 143,767 (23,507 ) (120,260 ) — Parent cash dividends (704,526 ) — — — (704,526 ) Net proceeds (payments) associated with employee stock-based awards 1,027 — — — 1,027 Payment of debt financing and stock issuance costs and other (1,969 ) (1,060 ) (2,724 ) — (5,753 ) Cash Flows from Financing Activities-Continuing Operations 282,032 (289,861 ) 38,449 (229,593 ) (198,973 ) Cash Flows from Financing Activities-Discontinued Operations — — — — — Cash Flows from Financing Activities 282,032 (289,861 ) 38,449 (229,593 ) (198,973 ) Effect of exchange rates on cash and cash equivalents — — (8,727 ) — (8,727 ) Increase (Decrease) in cash and cash equivalents (27 ) 142,890 (5,460 ) (109,333 ) 28,070 Cash and cash equivalents, including Restricted Cash, beginning of year 132 63,407 169,318 (67,372 ) 165,485 Cash and cash equivalents, including Restricted Cash, end of year $ 105 $ 206,297 $ 163,858 $ (176,705 ) $ 193,555 CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued) Year Ended December 31, 2018 Parent Guarantors Non- Eliminations Consolidated Cash Flows from Operating Activities: Cash Flows from Operating Activities-Continuing Operations $ (217,819 ) $ 880,615 $ 273,748 $ — $ 936,544 Cash Flows from Operating Activities-Discontinued Operations — (995 ) — — (995 ) Cash Flows from Operating Activities (217,819 ) 879,620 273,748 — 935,549 Cash Flows from Investing Activities: Capital expenditures — (313,510 ) (146,552 ) — (460,062 ) Cash paid for acquisitions, net of cash acquired — (1,338,888 ) (419,669 ) — (1,758,557 ) Intercompany loans to subsidiaries 805,799 90,569 — (896,368 ) — Acquisitions of customer relationships, customer inducements and data center lease-based intangibles — (76,388 ) (22,299 ) — (98,687 ) Net proceeds from Divestments — 1,019 — — 1,019 Proceeds from sales of property and equipment and other, net (including real estate) and proceeds from involuntary conversion of property and equipment — 299 85,860 — 86,159 Cash Flows from Investing Activities-Continuing Operations 805,799 (1,636,899 ) (502,660 ) (896,368 ) (2,230,128 ) Cash Flows from Investing Activities-Discontinued Operations — 8,250 — — 8,250 Cash Flows from Investing Activities 805,799 (1,628,649 ) (502,660 ) (896,368 ) (2,221,878 ) Cash Flows from Financing Activities: Repayment of revolving credit and term loan facilities and other debt — (7,355,086 ) (6,837,053 ) — (14,192,139 ) Proceeds from revolving credit and term loan facilities and other debt — 8,445,551 6,906,063 — 15,351,614 Debit balances (payments) under cash pools — (45,621 ) 18,267 27,354 — Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net — — (2,523 ) — (2,523 ) Intercompany loans from parent — (862,425 ) (33,943 ) 896,368 — Parent cash dividends (673,635 ) — — — (673,635 ) Net payments associated with employee stock-based awards (1,142 ) — — — (1,142 ) Net proceeds associated with the Equity Offering, including Over-Allotment Option 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 and other (412 ) (12,391 ) (3,602 ) — (16,405 ) Cash Flows from Financing Activities-Continuing Operations (590,281 ) 170,028 47,209 923,722 550,678 Cash Flows from Financing Activities-Discontinued Operations — — — — — Cash Flows from Financing Activities (590,281 ) 170,028 47,209 923,722 550,678 Effect of exchange rates on cash and cash equivalents — — (24,563 ) — (24,563 ) (Decrease) Increase in cash and cash equivalents (2,301 ) (579,001 ) (206,266 ) 27,354 (760,214 ) Cash and cash equivalents, including Restricted Cash, beginning of year 2,433 642,408 375,584 (94,726 ) 925,699 Cash and cash equivalents, including Restricted Cash, end of year $ 132 $ 63,407 $ 169,318 $ (67,372 ) $ 165,485 CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued) Year Ended December 31, 2017 Parent Guarantors Non- Eliminations Consolidated Cash Flows from Operating Activities: Cash Flows from Operating Activities-Continuing Operations $ (203,403 ) $ 737,532 $ 190,130 $ — $ 724,259 Cash Flows from Operating Activities-Discontinued Operations — (1,345 ) (1,946 ) — (3,291 ) Cash Flows from Operating Activities (203,403 ) 736,187 188,184 — 720,968 Cash Flows from Investing Activities: Capital expenditures — (237,004 ) (106,127 ) — (343,131 ) Cash paid for acquisitions, net of cash acquired — (96,946 ) (122,759 ) — (219,705 ) Intercompany loans to subsidiaries (990,635 ) (344,919 ) — 1,335,554 — Investment in subsidiaries (16,170 ) — — 16,170 — Acquisitions of customer relationships and customer inducements — (63,759 ) (11,426 ) — (75,185 ) Net proceeds from Divestments — — 29,236 — 29,236 Proceeds from sales of property and equipment and other, net (including real estate) and proceeds from involuntary conversion of property and equipment — 12,963 (3,626 ) — 9,337 Cash Flows from Investing Activities-Continuing Operations (1,006,805 ) (729,665 ) (214,702 ) 1,351,724 (599,448 ) Cash Flows from Investing Activities-Discontinued Operations — — — — — Cash Flows from Investing Activities (1,006,805 ) (729,665 ) (214,702 ) 1,351,724 (599,448 ) Cash Flows from Financing Activities: Repayment of revolving credit and term loan facilities and other debt (262,579 ) (8,077,553 ) (6,089,563 ) — (14,429,695 ) Proceeds from revolving credit and term loan facilities and other debt 224,660 7,650,436 6,041,959 — 13,917,055 Early retirement of senior subordinated and senior notes (1,031,554 ) — (715,302 ) — (1,746,856 ) Net proceeds from sales of senior notes 2,134,870 — 522,078 — 2,656,948 Debit balances (payments) under cash pools — 56,233 38,493 (94,726 ) — Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net — — 9,079 — 9,079 Intercompany loans from parent — 992,708 342,846 (1,335,554 ) — Equity contribution from parent — — 16,170 (16,170 ) — Parent cash dividends (439,999 ) — — — (439,999 ) Net proceeds associated with employee stock-based awards 13,095 — — — 13,095 Net proceeds associated with the Equity Offering, including Over-Allotment Option 516,462 — — — 516,462 Net proceeds associated with the At The Market (ATM) Program 59,129 — — — 59,129 Payment of debt financing and stock issuance costs (3,848 ) (9,391 ) (1,554 ) — (14,793 ) Cash Flows from Financing Activities-Continuing Operations 1,210,236 612,433 164,206 (1,446,450 ) 540,425 Cash Flows from Financing Activities-Discontinued Operations — — — — — Cash Flows from Financing Activities 1,210,236 612,433 164,206 (1,446,450 ) 540,425 Effect of exchange rates on cash and cash equivalents — — 27,270 — 27,270 Increase (Decrease) in cash and cash equivalents 28 618,955 164,958 (94,726 ) 689,215 Cash and cash equivalents, including Restricted Cash, beginning of year 2,405 23,453 210,626 — 236,484 Cash and cash equivalents, including Restricted Cash, end of year $ 2,433 $ 642,408 $ 375,584 $ (94,726 ) $ 925,699

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 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. a. Acquisitions Completed During the Year Ended December 31, 2019 During the year ended December 31, 2019 , in order to enhance our existing operations in the United States, Colombia, Germany, Hong Kong, Latvia, Slovakia, Switzerland, Thailand and the United Kingdom and to expand our operations into Bulgaria, we completed the acquisition of 10 storage and records management companies and one art storage company for total cash consideration of approximately $51,000 . The individual purchase prices of these acquisitions ranged from approximately $700 to $12,500 . b. Acquisitions Completed During the Year Ended December 31, 2018 Acquisition of IO Data Centers On January 10, 2018, we completed the acquisition of the United States operations of IODC, a leading data center colocation space and solutions provider based in Phoenix, Arizona, including the land and buildings associated with four data centers in Phoenix and Scottsdale, Arizona; Edison, New Jersey; and Columbus, Ohio (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 Consolidated Balance Sheets at December 31, 2019 and 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. (Unaudited) Year Ended December 31, 2018 2017 Total Revenues $ 4,229,251 $ 3,983,016 Income from Continuing Operations $ 377,510 $ 110,677 Per Share Income from Continuing Operations - Basic $ 1.32 $ 0.39 Per Share Income from Continuing Operations - Diluted $ 1.31 $ 0.39 In addition to our IODC Transaction, we completed certain other acquisitions in 2019 , 2018 and 2017 . The Pro Forma Financial Information does not reflect these acquisitions due to the insignificant impact of these acquisitions on our consolidated results of operations. Other Noteworthy Acquisitions On May 25, 2018, in order to further expand our data center operations in Europe, we acquired EvoSwitch Netherlands B.V. and EvoSwitch Global Services B.V. (collectively, "EvoSwitch"), a data center colocation space and solutions provider with a data center in Amsterdam (the "EvoSwitch Transaction"), for (i) cash consideration of 189,000 Euros (or approximately $222,000 , based upon the exchange rate between the Euro and the United States dollar on the closing date of the EvoSwitch Transaction) and (ii) $25,000 of additional consideration in the form of future services we will provide to the seller, which is included in purchase price holdbacks and other in the allocation of the purchase price paid table below. On March 8, 2018, in order to expand our data center operations into Europe and Asia, we acquired the operations of two data centers in London and Singapore from Credit Suisse International and Credit Suisse AG (together, "Credit Suisse") for a total of (i) 34,600 British pounds sterling and (ii) 81,000 Singapore dollars (or collectively, approximately $111,400 , based upon the exchange rates between the United States dollar and the British pound sterling and Singapore dollar on the closing date of the Credit Suisse transaction) (the “Credit Suisse Transaction”). As part of the Credit Suisse Transaction, Credit Suisse entered into a long-term lease with us to maintain existing data center operations. In addition to the transactions noted above, during 2018, in order to enhance our existing operations in the United States, Brazil, China, India, Ireland, Philippines, South Korea and the United Kingdom and to expand our operations into Croatia, we completed the acquisition of 11 storage and records management companies and three art storage companies for total consideration of approximately $98,100 . The individual purchase prices of these acquisitions ranged from approximately $1,000 to $34,100 . c. Acquisitions Completed During the Year Ended December 31, 2017 In December 2017, we acquired the storage and information management assets and operations of Santa Fe in China (the “Santa Fe China Transaction”) for approximately $16,800 . The purchase price for the Santa Fe China Transaction was not paid until January 2018 and, therefore, we accrued for the purchase price of the Santa Fe China Transaction in our Consolidated Balance Sheet as of December 31, 2017. In September 2017, in order to expand our existing entertainment storage and services operations in the United States and to expand our entertainment storage and services operations into Canada, the United Kingdom, France, the Netherlands and Hong Kong, we completed the acquisition of Bonded Services of America, Inc. and Bonded Services Acquisition, Ltd. (together, "Bonded") (the "Bonded Transaction"), providers of media asset storage and management services for global entertainment and media companies, for approximately 62,000 British pounds sterling (or approximately $83,000 , based upon the exchange rate between the British pound sterling and the United States dollar on the closing date of the Bonded Transaction). In September 2017, in order to expand our data center operations in the United States, we acquired Mag Datacenters LLC, which operated Fortrust, a private data center business with operations in Denver, Colorado (the “Fortrust Transaction”). At the closing of the Fortrust Transaction, we paid approximately $54,500 in cash (the "Fortrust Cash Consideration") and issued 2,193,637 shares of our common stock (the "Fortrust Stock Consideration"). The shares of our common stock issued to the former owners of Fortrust in connection with the Fortrust Transaction contain certain restrictions that impact the marketability of such shares for a period of six months following the closing date of the Fortrust Transaction (the “Lack of Marketability Restriction”). The 2,193,637 shares issued as part of the Fortrust Stock Consideration were valued at approximately $37.84 per share, which reflects a discount related to the Lack of Marketability Restriction, resulting in a total purchase price (including the Fortrust Cash Consideration and the Fortrust Stock Consideration) of approximately $137,500 . In addition to the transactions noted above, during 2017, in order to enhance our existing operations in the United States, India, Greece, Peru and South Africa and to expand our operations into Cyprus, Macau, South Korea and the United Arab Emirates, we completed the acquisition of 12 records and information management companies and one art storage company for total consideration of approximately $98,200 . The individual purchase prices of these acquisitions ranged from approximately $100 to $28,500 . d. Purchase Price Allocation A summary of the cumulative consideration paid and the allocation of the purchase price paid for all of our acquisitions in each respective year is as follows: 2019 2018 2017 Total IODC Transaction Other Fiscal Year 2018 Acquisitions Total Total Cash Paid (gross of cash acquired)(1) $ 53,230 $ 1,347,046 $ 432,078 $ 1,779,124 $ 234,314 Purchase Price Holdbacks and Other(2) 4,135 — 35,218 35,218 20,093 Fair Value of Common Stock Issued — — — — 83,014 Fair Value of Noncontrolling Interests — — — — 1,507 Total Consideration 57,365 1,347,046 467,296 1,814,342 338,928 Fair Value of Identifiable Assets Acquired: Cash 2,260 34,307 10,227 44,534 14,746 Accounts Receivable, Prepaid Expenses and Other Assets 3,102 7,070 17,662 24,732 24,379 Property, Plant and Equipment(3) 5,396 863,027 225,848 1,088,875 150,878 Customer Relationship Intangible Assets(4) 22,071 — 44,622 44,622 116,028 Operating Lease Right-of-Use Assets 16,956 — — — — Data Center In-Place Leases(5) — 104,340 36,130 140,470 6,300 Data Center Tenant Relationships(6) — 77,362 18,410 95,772 — Data Center Above-Market Leases(7) — 16,439 2,381 18,820 — Other Intangible Assets — — — — 14,487 Debt Assumed — — (12,312 ) (12,312 ) (5,287 ) Accounts Payable, Accrued Expenses and Other Liabilities (3,233 ) (36,230 ) (17,206 ) (53,436 ) (24,869 ) Operating Lease Liabilities (16,956 ) — — — — Deferred Income Taxes (1,813 ) — (43,218 ) (43,218 ) (18,122 ) Data Center Below-Market Leases(7) — (11,421 ) (694 ) (12,115 ) — Total Fair Value of Identifiable Net Assets Acquired 27,783 1,054,894 281,850 1,336,744 278,540 Goodwill Initially Recorded(8) $ 29,582 $ 292,152 $ 185,446 $ 477,598 $ 60,388 _______________________________________________________________________________ (1) Included in cash paid for acquisitions in our Consolidated Statement of Cash Flows for the year ended December 31, 2019 is net cash acquired of $2,260 and contingent and other payments, net of $7,267 related to acquisitions made in years prior to 2019 . Included in cash paid for acquisitions in our Consolidated Statement of Cash Flows for the year ended December 31, 2018 is net cash acquired of $44,534 and contingent and other payments, net of $23,967 related to acquisitions made in years prior to 2018 . Included in cash paid for acquisitions in our Consolidated Statement of Cash Flows for the year ended December 31, 2017 is net cash acquired of $14,746 and contingent and other payments, net of $137 related to acquisitions made in years prior to 2017 . (2) Purchase price holdbacks and other includes $18,824 purchase price accrued for the EvoSwitch Transaction in 2018 and $16,771 purchase price accrued for the Santa Fe China Transaction in 2017. (3) Consists primarily of buildings, building improvements, leasehold improvements, data center infrastructure, racking structures, warehouse equipment and computer hardware and software. (4) The weighted average lives of customer relationship intangible assets associated with acquisitions in 2019 , 2018 and 2017 was 16 years, 10 years and 12 years, respectively. (5) The weighted average lives of data center in-place leases associated with acquisitions in 2018 was six years . (6) The weighted average lives of data center tenant relationships associated with acquisitions in 2018 was nine years . (7) The weighted average lives of data center above-market leases associated with acquisitions in 2018 was three years and the weighted average lives of data center below-market leases associated with acquisitions in 2018 was seven years . (8) The goodwill associated with acquisitions, including IODC, is primarily attributable to the assembled workforce, expanded market opportunities and costs and other operating synergies anticipated upon the integration of the operations of us and the acquired businesses. Allocations of the purchase price for acquisitions made in 2019 , 2018 and 2017 were based on estimates of the fair value of the net assets acquired and are subject to adjustment upon the finalization of the purchase price allocations. The accounting for business combinations requires estimates and judgments regarding expectations for future cash flows of the acquired business, and the allocations of those cash flows to identifiable tangible and intangible assets, in determining the assets acquired and liabilities assumed. The fair values assigned to tangible and intangible assets acquired and liabilities assumed, including contingent consideration, are based on management's best estimates and assumptions, as well as other information compiled by management, including valuations that utilize customary valuation procedures and techniques. The estimates and assumptions underlying the initial valuations are subject to the collection of information necessary to complete the valuations within the measurement periods, which are up to one year from the respective acquisition dates. The preliminary purchase price allocations that are not finalized as of December 31, 2019 primarily relate to the final assessment of the fair values of intangible assets (primarily customer relationship intangible assets), property, plant and equipment (primarily racking structures) and income taxes (primarily deferred income taxes) 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 fourth quarter of 2019 were not material to our results from operations.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	We have been organized and have operated as a REIT effective beginning with our taxable year that ended on December 31, 2014. As a REIT, we are generally permitted to deduct from our federal taxable income the dividends we pay to our stockholders. The income represented by such dividends is not subject to federal taxation at the entity level but is taxed, if at all, at the stockholder level. The income of our domestic taxable REIT subsidiaries ("TRSs"), which hold our domestic operations that may not be REIT-compliant as currently operated and structured, is subject, as applicable, to federal and state corporate income tax. In addition, we and our subsidiaries continue to be subject to foreign income taxes in other jurisdictions in which we have business operations or a taxable presence, regardless of whether assets are held or operations are conducted through subsidiaries disregarded for federal income tax purposes or TRSs. We will also be subject to a separate corporate income tax on any gains recognized on the sale or disposition of any asset previously owned by a C corporation during a five-year period after the date we first owned the asset as a REIT asset that are attributable to "built-in gains" with respect to that asset on that date. We will also be subject to a built-in gains tax on our depreciation recapture recognized into income as a result of accounting method changes in connection with our acquisition activities. If we fail to remain qualified for taxation as a REIT, we will be subject to federal income tax at regular corporate income tax rates. Even if we remain qualified for taxation as a REIT, we may be subject to some federal, state, local and foreign taxes on our income and property in addition to taxes owed with respect to our TRS operations. In particular, while state income tax regimes often parallel the federal income tax regime for REITs, many states do not completely follow federal rules and some do not follow them at all. On December 22, 2017, legislation commonly referred to as the Tax Cuts and Jobs Act (the “Tax Reform Legislation”) was enacted into law in the United States. The Tax Reform Legislation amended the Internal Revenue Code of 1986, as amended (the “Code”), to reduce tax rates and modify policies, credits and deductions for businesses and individuals. The following summarizes certain components of the Tax Reform Legislation and the impact such components of the Tax Reform Legislation. One of the primary components of the Tax Reform Legislation was a reduction in the United States corporate federal income tax rate from 35% to 21% for taxable years beginning after December 31, 2017. a. Deemed Repatriation Transition Tax The Tax Reform Legislation imposed a transition tax (the “Deemed Repatriation Transition Tax”) on a mandatory deemed repatriation of post-1986 undistributed foreign earnings and profits not previously subject to United States tax as of November 2, 2017 or December 31, 2017, whichever was greater (the “Undistributed E&P”) as of the last taxable year beginning before January 1, 2018. The Deemed Repatriation Transition Tax varied depending on whether the Undistributed E&P was held in liquid (as defined in the Tax Reform Legislation) or non-liquid assets. A participation deduction against the deemed repatriation resulted in a Deemed Repatriation Transition Tax on Undistributed E&P of 15.5% if held in cash and liquid assets and 8.0% if held in non-liquid assets. The Deemed Repatriation Transition Tax applied regardless of whether or not an entity had cash in its foreign subsidiaries and regardless of whether the entity actually repatriated the Undistributed E&P back to the United States. We have completed our analysis and determined that the amount of Undistributed E&P deemed repatriated under the Tax Reform Legislation in our taxable year ending December 31, 2017 was $160,000 . We opted to include the full amount of Undistributed E&P in our 2017 taxable income, rather than spread it over eight years (as permitted by the Tax Reform Legislation). After applying the participation deduction, included in our REIT taxable income for 2017 was approximately $70,900 related to the deemed repatriation of Undistributed E&P. b. Global Intangible Low-Taxed Income For taxable years beginning after December 31, 2017, the Tax Reform Legislation introduced new provisions intended to prevent the erosion of the United States federal income tax base through the taxation of certain global intangible low-taxed income (“GILTI”). The GILTI provisions created a new requirement that certain income earned by controlled foreign corporations (“CFCs”) must be included currently in the gross income of the CFC’s United States tax resident shareholder. Generally, GILTI is the excess of the United States shareholder’s pro rata portion of the income of its foreign subsidiaries over the net deemed tangible income return of such subsidiaries. The GILTI provisions also provide for certain deductions against the inclusion of GILTI in taxable income; however, REITs are not eligible for such deductions. Therefore, 100% of our GILTI is included in our taxable income and will increase the required minimum distribution to our stockholders. There was no GILTI included in our taxable income for the year ended December 31, 2019 and the amount included in our REIT taxable income for the year ended December 31, 2018 was $41,944 . We have adopted an accounting policy such that we will recognize no deferred taxes related to basis differences resulting from GILTI. c. Interest Deduction Limitation The Tax Reform Legislation also limits, for certain entities, the deduction for net interest expense to the sum of business interest income plus 30% of adjusted taxable income (the “Interest Deduction Limitation”). Adjusted taxable income is defined in the Tax Reform Legislation similar to earnings before interest, taxes, depreciation and amortization for taxable years beginning after December 31, 2017 and before January 1, 2022, and is defined similar to earnings before interest and taxes for taxable years beginning after December 31, 2021. The Interest Deduction Limitation does not apply to taxpayers that qualify, and make an election, to be treated as an “electing real property trade or business”. As a REIT, IMI, including all of our qualified REIT subsidiaries ("QRSs"), made an election to be treated as an "electing real property trade or business" beginning in our taxable year ended December 31, 2018. As such, the interest deduction limitation does not apply to IMI or our QRSs; however, IMI will be required to utilize the alternative depreciation system for its real property. This election does not have a material impact on our consolidated financial statements. We do not generally believe our TRSs are eligible for treatment as "electing real property trades or businesses". The significant components of our deferred tax assets and deferred tax liabilities are presented below: December 31, 2019 2018 Deferred Tax Assets: Accrued liabilities and other adjustments(1) $ 53,197 $ 59,477 Net operating loss carryforwards 99,240 92,952 Federal benefit of unrecognized tax benefits 3,039 2,925 Valuation allowance (60,003 ) (55,666 ) 95,473 99,688 Deferred Tax Liabilities: Other assets, principally due to differences in amortization (177,645 ) (166,469 ) Plant and equipment, principally due to differences in depreciation (67,515 ) (74,147 ) Other (21,903 ) (26,260 ) (267,063 ) (266,876 ) Net deferred tax liability $ (171,590 ) $ (167,188 ) ______________________________________________________________________________ (1) Amounts as of December 31, 2018 has been restated to reflect the impact of the Netherlands VAT liability (as discussed in Note 2.y.) which resulted in an increase in accrued liabilities and other adjustments of $4,971 . The deferred tax assets and deferred tax liabilities are presented below: December 31, 2019 2018 Noncurrent deferred tax assets (Included in Other, a component of Other assets, net) $ 16,538 $ 16,648 Deferred income taxes (188,128 ) (183,836 ) At December 31, 2019 , we have federal net operating loss carryforwards of $152,743 available to reduce future federal taxable income, the majority of which expire from 2024 through 2037. Of the $152,743 , we expect to utilize $39,156 and realize a federal tax benefit of $8,223 . We can carry forward these net operating losses to the extent we do not utilize them in any given available year. We have state net operating loss carryforwards, which expire from 2020 through 2039, of which an insignificant state tax benefit is expected to be realized. We have assets for foreign net operating losses of $90,811 , with various expiration dates (and in some cases no expiration date), subject to a valuation allowance of approximately 64% . Rollforward of the valuation allowance is as follows: Year Ended December 31, Balance at Beginning of the Year Charged (Credited) to Expense Other Increases/(Decreases)(1) Balance at End of the Year 2019 $ 55,666 $ 6,211 $ (1,874 ) $ 60,003 2018 61,756 3,568 (9,658 ) 55,666 2017 71,359 (4,317 ) (5,286 ) 61,756 _______________________________________________________________________________ (1) Other increases and decreases in valuation allowances are primarily related to changes in foreign currency exchange rates and disposal of certain foreign subsidiaries. The components of income (loss) from continuing operations before provision (benefit) for income taxes are: Year Ended December 31, 2019 2018 2017 United States $ 203,225 $ 203,078 $ 162,763 Canada 48,326 53,779 50,019 Other Foreign 76,591 153,454 (11,805 ) $ 328,142 $ 410,311 $ 200,977 The provision (benefit) for income taxes consists of the following components: Year Ended December 31, 2019 2018 2017 Federal—current $ 7,262 $ 703 $ 16,345 Federal—deferred (3,356 ) (4,162 ) (12,655 ) State—current 3,943 918 3,440 State—deferred (1,126 ) 627 (1,276 ) Foreign—current 49,350 45,371 42,532 Foreign—deferred 3,858 (704 ) (25,424 ) Provision (Benefit) for Income Taxes $ 59,931 $ 42,753 $ 22,962 A reconciliation of total income tax expense and the amount computed by applying the current federal statutory tax rate of 21.0% to income from continuing operations before provision (benefit) for income taxes for the years ended December 31, 2019 and 2018 and the former federal statutory tax rate of 35.0% to income from continuing operations before provision (benefit) for income taxes for the year ended December 31, 2017 is as follows: Year Ended December 31, 2019 2018 2017 Computed "expected" tax provision $ 68,910 $ 86,165 $ 70,342 Changes in income taxes resulting from: Tax adjustment relating to REIT (40,577 ) (35,165 ) (78,873 ) State taxes (net of federal tax benefit) 2,115 1,599 2,692 Increase (decrease) in valuation allowance (net operating losses) 6,211 3,568 (4,317 ) Foreign repatriation — — 29,476 U.S. Federal Rate Reduction — — (4,685 ) Reserve (reversal) accrual and audit settlements (net of federal tax benefit) 514 (13,985 ) (9,103 ) Foreign tax rate differential 8,562 1,031 (9,639 ) Disallowed foreign interest, Subpart F income, and other foreign taxes 14,241 903 29,325 Other, net (45 ) (1,363 ) (2,256 ) Provision (Benefit) for Income Taxes $ 59,931 $ 42,753 $ 22,962 Our effective tax rates for the years ended December 31, 2019 , 2018 and 2017 were 18.3% , 10.4% and 11.4% , respectively. 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 and our 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. The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the year ended December 31, 2019 were the benefit derived from the dividends paid deduction of $40,577 and the impact of differences in the tax rates at which our foreign earnings are subject to, resulting in a tax provision of $8,562 . The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the year ended December 31, 2018 were the benefit derived from the dividends paid deduction of $35,165 , the impact of differences in the tax rates at which our foreign earnings are subject to, resulting in a tax provision of $1,031 and a discrete tax benefit of approximately $14,000 associated with the resolution of a tax matter (which was included as a component of Accrued expenses in our Consolidated Balance Sheet as of December 31, 2017 ). The primary reconciling items between the former federal statutory tax rate of 35.0% and our overall effective tax rate for the year ended December 31, 2017 were the benefit derived from the dividends paid deduction of $78,873 , the impact of differences in the tax rates at which our foreign earnings are subject to, resulting in a tax benefit of $9,639 , and a release of valuation allowances on certain of our foreign net operating losses of $4,317 as a result of the merger of certain of our foreign subsidiaries, partially offset by the impact of the Tax Reform Legislation of $24,791 (reflecting the impact of the Deemed Repatriation Transition Tax, partially offset by the impact of the U.S. Federal Tax Rate Reduction). As a REIT, we are entitled to a deduction for dividends paid, resulting in a substantial reduction of federal income tax expense. As a REIT, substantially all of our income tax expense will be incurred based on the earnings generated by our foreign subsidiaries and our domestic TRSs. Following our conversion to a REIT in 2014, we concluded that it was not our intent to reinvest our current and future undistributed earnings of our foreign subsidiaries indefinitely outside the United States. As of December 31, 2016, we concluded that it is our intent to indefinitely reinvest our current and future undistributed earnings of certain of our unconverted foreign TRSs outside the United States. We no longer provide incremental foreign withholding taxes on the retained book earnings of these unconverted foreign TRSs, which was approximately $279,700 as of December 31, 2019. As a REIT, future repatriation of incremental undistributed earnings of our foreign subsidiaries will not be subject to federal or state income tax, with the exception of foreign withholding taxes in limited instances; however, such future repatriations will require distribution in accordance with REIT distribution rules, and any such distribution may then be taxable, as appropriate, at the stockholder level. We continue, however, to provide for incremental foreign withholding taxes on net book over outside basis differences related to the earnings of our foreign QRSs and certain other foreign TRSs (excluding unconverted foreign TRSs). The evaluation of an uncertain tax position is a two-step process. The first step is a recognition process whereby we determine whether it is more likely than not that a tax position will be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits of the position. The second step is a measurement process whereby a tax position that meets the more likely than not recognition threshold is calculated to determine the amount of benefit to recognize in the financial statements. The tax position is measured as the largest amount of benefit that is greater than 50% likely of being realized upon ultimate settlement. We have elected to recognize interest and penalties associated with uncertain tax positions as a component of the provision (benefit) for income taxes in the accompanying Consolidated Statements of Operations. We recorded an increase of $1,780 , $1,961 and $289 for gross interest and penalties for the years ended December 31, 2019 , 2018 and 2017 , respectively. We had $9,282 and $7,557 accrued for the payment of interest and penalties as of December 31, 2019 and 2018 , respectively. A summary of tax years that remain subject to examination by major tax jurisdictions is as follows: Tax Years Tax Jurisdiction See Below United States—Federal and State 2015 to present United Kingdom 2012 to present Canada The normal statute of limitations for United States federal tax purposes is three years from the date the tax return is filed; however, the statute of limitations may remain open for periods longer than three years in instances where a federal tax examination is in progress. The 2018, 2017 and 2016 tax years remain subject to examination for United States federal tax purposes as well as net operating loss carryforwards utilized in these years. We utilized net operating losses from 2002 through 2003 and 2010 through 2015 in our federal income tax returns for these tax years. The normal statute of limitations for state purposes is between three to five years. However, certain of our state statute of limitations remain open for periods longer than this when audits are in progress. We are subject to income taxes in the United States and numerous foreign jurisdictions. We are subject to examination by various tax authorities in jurisdictions in which we have business operations or a taxable presence. We regularly assess the likelihood of additional assessments by tax authorities and provide for these matters as appropriate. As of December 31, 2019 , we had $35,068 of reserves related to uncertain tax positions, of which $31,992 and $3,076 is included in other long-term liabilities and deferred income taxes, respectively, in the accompanying Consolidated Balance Sheet. As of December 31, 2018 , we had $35,320 of reserves related to uncertain tax positions, of which $32,144 and $3,176 is included in other long-term liabilities and deferred income taxes, respectively, in the accompanying Consolidated Balance Sheet. Although we believe our tax estimates are appropriate, the final determination of tax audits and any related litigation could result in changes in our estimates. A rollforward of unrecognized tax benefits is as follows: Gross tax contingencies—December 31, 2016 $ 59,466 Gross additions based on tax positions related to the current year 4,067 Gross additions for tax positions of prior years 3,368 Gross reductions for tax positions of prior years(1) (2,789 ) Lapses of statutes (2,629 ) Settlements (22,950 ) Gross tax contingencies—December 31, 2017 38,533 Gross additions based on tax positions related to the current year 3,147 Gross additions for tax positions of prior years 981 Gross reductions for tax positions of prior years (2,865 ) Lapses of statutes (4,462 ) Settlements (14 ) Gross tax contingencies—December 31, 2018 35,320 Gross additions based on tax positions related to the current year 2,914 Gross additions for tax positions of prior years 1,271 Gross reductions for tax positions of prior years (299 ) Lapses of statutes (4,034 ) Settlements (104 ) Gross tax contingencies—December 31, 2019 $ 35,068 _______________________________________________________________________________ (1) This amount includes gross additions related to the Recall Transaction. The reversal of these reserves of $35,068 ( $32,311 net of federal tax benefit) as of December 31, 2019 will be recorded as a reduction of our income tax provision, if sustained. We believe that it is reasonably possible that an amount up to approximately $7,400 ( $4,587 net of federal tax benefit) of our unrecognized tax positions may be recognized by the end of 2020

Quarterly Results of Operations

Quarterly Results of Operations (Unaudited)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Quarterly Results of Operations (Unaudited)	Quarter Ended March 31 June 30 September 30 December 31 2019 Total revenues $ 1,053,863 $ 1,066,907 $ 1,062,224 $ 1,079,590 Operating income (loss) 158,675 193,115 223,474 206,074 Income (loss) from continuing operations 30,476 92,347 108,284 37,104 Total (loss) income from discontinued operations (24 ) 128 — — Net income (loss) 30,452 92,475 108,284 37,104 Net income (loss) attributable to Iron Mountain Incorporated 29,561 92,441 107,675 37,700 (1) Earnings (losses) per Share-Basic: Income (loss) per share from continuing operations 0.10 0.32 0.37 0.13 Total (loss) income per share from discontinued operations — — — — Net income (loss) per share attributable to Iron Mountain Incorporated 0.10 0.32 0.37 0.13 Earnings (losses) per Share-Diluted: Income (loss) per share from continuing operations 0.10 0.32 0.37 0.13 Total (loss) income per share from discontinued operations — — — — Net income (loss) per share attributable to Iron Mountain Incorporated 0.10 0.32 0.37 0.13 2018 Total revenues $ 1,042,458 $ 1,060,823 $ 1,060,991 $ 1,061,489 Operating income (loss) 157,119 201,460 195,635 254,053 Income (loss) from continuing operations(2) 39,389 92,263 77,349 158,557 Total (loss) income from discontinued operations (462 ) (360 ) (11,605 ) — Net income (loss) 38,927 91,903 65,744 158,557 Net income (loss) attributable to Iron Mountain Incorporated 38,459 91,761 65,869 157,844 (3) Earnings (losses) per Share-Basic: Income (loss) per share from continuing operations 0.14 0.32 0.27 0.55 Total (loss) income per share from discontinued operations — — (0.04 ) — Net income (loss) per share attributable to Iron Mountain Incorporated 0.13 0.32 0.23 0.55 Earnings (losses) per Share-Diluted: Income (loss) per share from continuing operations 0.14 0.32 0.27 0.55 Total (loss) income per share from discontinued operations — — (0.04 ) — Net income (loss) per share attributable to Iron Mountain Incorporated 0.13 0.32 0.23 0.55 _______________________________________________________________________________ (1) The change in net income (loss) attributable to Iron Mountain Incorporated in the fourth quarter of 2019 compared to the third quarter of 2019 is primarily attributable to (i) an increase of approximately $63,000 in losses on foreign currency transactions in the fourth quarter of 2019 compared to the third quarter of 2019, (ii) Restructuring Charges of $48,600 , which began in the fourth quarter of 2019 (as described in Note 14), partially offset by (iii) an increase in net gains on disposal/write-down of property, plant and equipment of $37,500 recorded during the fourth quarter of 2019 compared to the third quarter of 2019 and (iv) a decrease of approximately $5,100 in the provision for income taxes recorded in the fourth quarter of 2019 compared to the third quarter of 2019. (2) Income (loss) from continuing operations reflects the immaterial restatement described in Note 2.y., which reduced Income (loss) from continuing operations for the three month periods ended March 31, 2018, June 30, 2018, September 30, 2018 and December 31, 2018 by $6,225 , $1,640 , $1,279 and $274 , respectively. (3) The change in net income (loss) attributable to Iron Mountain Incorporated in the fourth quarter of 2018 compared to the third quarter of 2018 is primarily attributable to (i) gains of approximately $62,500 recorded during the fourth quarter of 2018 associated with the sale of land and buildings in the United Kingdom (see Note 2.g.), (ii) a gain on disposal/write-down of property, plant and equipment (excluding real estate) recorded during the fourth quarter of 2018 of approximately $8,800 related to the receipt of insurance proceeds related to the involuntary conversion of certain assets in a facility we own in Argentina (see Note 2.g.), (iii) a decrease in the provision for income taxes recorded in the fourth quarter of 2018 compared to the third quarter of 2018 of approximately $11,200 , (iv) an increase in gains on foreign currency transactions in the fourth quarter of 2018 compared to the third quarter of 2018 of approximately $20,000 and (v) a charge of $11,100 recorded during the third quarter of 2018 relating to the resolution of the post-closing adjustments to the Access Contingent Consideration (as defined and discussed in Note 13) that did not recur during the fourth quarter of 2018.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Segment Information	During the fourth quarter of 2019, as a result of the realignment of our global managerial structure and changes to our internal financial reporting associated with Project Summit, we reassessed the composition of our reportable operating segments and reporting units. As a result of the managerial structure changes associated with Project Summit, we now have the following reportable operating segments: (i) Global Records and Information Management ("Global RIM") Business (which consists of the former North American Records and Information Management Business (excluding our technology escrow services business, which is now included as a component of our Corporate and Other Business segment), North American Data Management Business, Western European Business and Other International Business); (ii) Global Data Center Business; and (iii) Corporate and Other Business (which includes our Adjacent Businesses and our technology escrow services business). As a result of these changes, previously reported segment information has been restated to conform to the current presentation. As of December 31, 2019 , our three reportable operating segments are described as follows: • Global RIM Business—provides (i) storage of physical records, including media such as microfilm and microfiche, film, X-rays and blueprints, including healthcare information services, vital records services, service and courier operations, and the collection, handling and disposal of sensitive documents for customers in approximately 50 countries ("Records Management"), (ii) storage and rotation of backup computer media as part of corporate disaster recovery plans, including service and courier operations (“Data Protection & Recovery”); server and computer backup services; and related services offerings, (collectively, "Data Management"), (iii) Information Governance and Digital Solutions, which develops, implements and supports comprehensive storage and information management solutions for the complete lifecycle of our customers' information, including the management of physical records, document conversion and digital storage in the United States and Canada, (iv) the shredding of sensitive documents for customers that, in many cases, store their records with us ("Secure Shredding") and the subsequent sale of shredded paper for recycling, and (v) on-demand, valet storage for consumers across 24 markets in North America through the MakeSpace JV (as defined in Note 13). • Global Data Center Business—provides enterprise-class data center facilities to protect mission-critical assets and ensure the continued operation of our customers’ IT infrastructure, with secure and reliable data center options. As of December 31, 2019, our Global Data Center Business footprint spanned nine markets in the United States: Denver, Colorado; Kansas City, Missouri; Boston, Massachusetts; Boyers, Pennsylvania; Manassas, Virginia; Edison, New Jersey; Columbus, Ohio; and Phoenix and Scottsdale, Arizona and four international markets: Amsterdam, London, and Singapore, with land held for development in Frankfurt. • Corporate and Other Business—consists primarily of Adjacent Businesses and other corporate items. Our Adjacent Businesses is comprised of (i) helping entertainment and media industry clients store, safeguard and deliver physical media of all types, and provides digital content repository systems that house, distribute, and archive key media assets, throughout the United States, Canada, France, China - Hong Kong S.A.R., the Netherlands and the United Kingdom ("Entertainment Services") and (ii) technical expertise in the handling, installation and storing of art in the United States, Canada and Europe ("Fine Arts"). Additionally, our Corporate and Other Business segment includes costs related to executive and staff functions, including finance, human resources and IT, which benefit the enterprise as a whole, and stock-based employee compensation expense associated with all stock options, restricted stock units, performance units and shares of stock issued under our employee stock purchase plan. Additionally, our Corporate and Other Business segment includes our technology escrow services business in the United States. An analysis of our business segment information and reconciliation to the accompanying Consolidated Financial Statements is as follows: Global RIM Business Global Data Center Business Corporate and Total As of and for the Year Ended December 31, 2019 Total Revenues $ 3,812,433 $ 257,151 $ 193,000 $ 4,262,584 Storage Rental 2,320,076 246,925 114,086 2,681,087 Service 1,492,357 10,226 78,914 1,581,497 Depreciation and Amortization 454,652 133,927 69,622 658,201 Depreciation 330,534 78,939 46,850 456,323 Amortization 124,118 54,988 22,772 201,878 Adjusted EBITDA 1,563,223 121,517 (247,135 ) 1,437,605 Total Assets(1) 10,753,218 2,535,848 527,750 13,816,816 Expenditures for Segment Assets 398,690 427,935 56,242 882,867 Capital Expenditures 248,232 392,029 52,722 692,983 Cash Paid for Acquisitions, Net of Cash Acquired 54,717 — 3,520 58,237 Acquisitions of Customer Relationships, Customer Inducements, Contract Fulfillment Costs and third-party commissions 95,741 35,906 — 131,647 As of and for the Year Ended December 31, 2018 Total Revenues $ 3,842,600 $ 228,983 $ 154,178 $ 4,225,761 Storage Rental 2,301,344 218,675 102,436 2,622,455 Service 1,541,256 10,308 51,742 1,603,306 Depreciation and Amortization 472,155 105,680 61,679 639,514 Depreciation 341,384 58,707 52,649 452,740 Amortization 130,771 46,973 9,030 186,774 Adjusted EBITDA 1,569,353 99,574 (244,103 ) 1,424,824 Total Assets(1) 9,135,198 2,217,505 504,515 11,857,218 Expenditures for Segment Assets 443,634 1,794,386 79,286 2,317,306 Capital Expenditures 254,308 152,739 53,015 460,062 Cash Paid for Acquisitions, Net of Cash Acquired 93,217 1,639,427 25,913 1,758,557 Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs 96,109 2,220 358 98,687 As of and for the Year Ended December 31, 2017 Total Revenues $ 3,706,110 $ 37,694 $ 101,774 $ 3,845,578 Storage Rental 2,261,831 35,839 79,887 2,377,557 Service 1,444,279 1,855 21,887 1,468,021 Depreciation and Amortization 458,634 10,224 53,518 522,376 Depreciation 351,915 8,617 45,751 406,283 Amortization 106,719 1,607 7,767 116,093 Adjusted EBITDA 1,470,579 11,275 (238,281 ) 1,243,573 Total Assets(1) 9,151,755 382,198 1,441,434 10,975,387 Expenditures for Segment Assets 424,628 86,543 126,850 638,021 Capital Expenditures 262,474 32,015 48,642 343,131 Cash Paid for Acquisitions, Net of Cash Acquired(2) 86,969 54,528 78,208 219,705 Acquisitions of Customer Relationships and Customer Inducements 75,185 — — 75,185 _______________________________________________________________________________ (1) Excludes all intercompany receivables or payables and investment in subsidiary balances. Total Assets as of December 31, 2019 reflects the adoption of ASU 2016-02. Total Assets for the Corporate and Other Business segment have been restated to reflect the impact of the Netherlands VAT liability (as discussed in Note 2.y.) which resulted in an increase in total assets for this segment of $4,971 and $2,985 , at December 31, 2018 and 2017, respectively. The accounting policies of the reportable segments are the same as those described in Note 2. 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: (1) (gain) loss on disposal/write-down of property, plant and equipment (including real estate); (2) intangible impairments; (3) other expense (income), net (which includes foreign currency transaction (gains) losses, net); (4) Significant Acquisition Costs; and (5) Restructuring Charges. Internally, we use Adjusted EBITDA as the basis for evaluating the performance of, and allocated resources to, our operating segments. A reconciliation of Adjusted EBITDA to income (loss) from continuing operations on a consolidated basis is as follows: Year Ended December 31, 2019 2018 2017 Adjusted EBITDA $ 1,437,605 $ 1,424,824 $ 1,243,573 (Add)/Deduct: Provision (Benefit) for Income Taxes 59,931 42,753 22,962 Other Expense (Income), Net 33,898 (11,692 ) 79,429 Interest Expense, Net 419,298 409,648 353,645 (Gain) Loss on disposal/write-down of property, plant and equipment, net (63,824 ) (73,622 ) (766 ) Depreciation and amortization 658,201 639,514 522,376 Significant Acquisition Costs 13,293 50,665 84,901 Restructuring Charges 48,597 — — Intangible impairments — — 3,011 Income (Loss) from Continuing Operations $ 268,211 $ 367,558 $ 178,015 Information as to our operations in different geographical areas is as follows: Year Ended December 31, 2019 2018 2017 Revenues: United States $ 2,632,586 $ 2,579,847 $ 2,310,296 United Kingdom 274,931 280,993 246,373 Canada 243,033 249,505 243,625 Australia 143,511 155,367 157,333 Remaining Countries 968,523 960,049 887,951 Total Revenues $ 4,262,584 $ 4,225,761 $ 3,845,578 Long-lived Assets: United States $ 7,862,262 $ 6,902,232 $ 5,476,551 United Kingdom 755,859 547,768 529,233 Canada 556,591 453,398 500,396 Australia 530,755 442,755 470,432 Remaining Countries 2,875,010 2,302,951 2,048,460 Total Long-lived Assets $ 12,580,477 $ 10,649,104 $ 9,025,072 Information as to our revenues by product and service lines by segment are as follows: Global RIM Business Global Data Center Business Corporate and Total For the Year Ended December 31, 2019 Records Management(1) $ 2,866,192 $ — $ 128,954 $ 2,995,146 Data Management(1) 520,082 — 64,046 584,128 Information Destruction(1)(2) 426,159 — — 426,159 Data Center — 257,151 — 257,151 Total Revenues $ 3,812,433 $ 257,151 $ 193,000 $ 4,262,584 For the Year Ended December 31, 2018 Records Management(1) $ 2,871,253 $ — $ 96,669 $ 2,967,922 Data Management(1) 539,035 — 57,509 596,544 Information Destruction(1)(2) 432,312 — — 432,312 Data Center — 228,983 — 228,983 Total Revenues $ 3,842,600 $ 228,983 $ 154,178 $ 4,225,761 For the Year Ended December 31, 2017 Records Management(1) $ 2,778,024 $ — $ 69,667 $ 2,847,691 Data Management(1) 542,148 — 32,103 574,251 Information Destruction(1)(2) 385,938 — 4 385,942 Data Center — 37,694 — 37,694 Total Revenues $ 3,706,110 $ 37,694 $ 101,774 $ 3,845,578 _______________________________________________________________________________ (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 the destruction services offering, which does not have a storage rental component. (2) Includes Secure Shredding services. Significant Acquisition Costs included in the accompanying Consolidated Statements of Operations by segment are as follows: Year Ended December 31, 2019 2018 2017 Global RIM Business $ 8,223 $ 20,590 $ 47,722 Global Data Center Business 337 11,423 — Corporate and Other Business 4,733 18,652 37,179 Total Significant Acquisition Costs $ 13,293 $ 50,665 $ 84,901

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	We have certain contractual obligations related to purchase commitments which require minimum payments as follows: Year Purchase 2020 $ 134,127 2021 68,208 2022 32,480 2023 2,004 2024 1,985 Thereafter 340 $ 239,144 ______________________________________________________________________ (1) Purchase commitments (i) include obligations for future construction costs associated with the expansion of our Global Data Center Business, which represent a significant amount of the purchase commitments due in 2020 and (ii) exclude our operating and financing lease obligations (see Note 2.m.). b. Self-Insured Liabilities We are self-insured up to certain limits for costs associated with workers' compensation claims, vehicle accidents, property and general business liabilities, and benefits paid under employee healthcare and short-term disability programs. At December 31, 2019 and 2018 there were $43,127 and $41,328 , respectively, of self-insurance accruals reflected in Accrued expenses on our Consolidated Balance Sheets. The measurement of these costs requires the consideration of historical cost experience and judgments about the present and expected levels of cost per claim. We account for these costs primarily through actuarial methods, which develop estimates of the undiscounted liability for claims incurred, including those claims incurred but not reported. These methods provide estimates of future claim costs based on claims incurred as of the balance sheet date. c. Litigation—General We are involved in litigation from time to time in the ordinary course of business. A portion of the defense and/or settlement costs associated with such litigation is covered by various commercial liability insurance policies purchased by us and, in limited cases, indemnification from third parties. Our policy is to establish reserves for loss contingencies when the losses are both probable and reasonably estimable. We record legal costs associated with loss contingencies as expenses in the period in which they are incurred. The matters described below represent our significant loss contingencies. We have evaluated each matter and, if both probable and estimable, accrued an amount that represents our estimate of any probable loss associated with such matter. In addition, we have estimated a reasonably possible range for all loss contingencies including those described below. We believe it is reasonably possible that we could incur aggregate losses in addition to amounts currently accrued for all matters up to an additional $6,000 over the next several years, of which certain amounts would be covered by insurance or indemnity arrangements. d. Netherlands VAT Liability In June 2019, we received a notification of assessment from tax and customs authorities in the Netherlands related to VAT liability of approximately 16,800 Euros primarily related to the years ending December 31, 2018 and 2017. The notification of assessment is related to our customs clearing and logistics business in the Netherlands, which we acquired through the acquisition of 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 on behalf of which the goods are being imported. 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. e. Italy Fire On November 4, 2011, we experienced a fire at a facility we leased in Aprilia, Italy. The facility primarily stored archival and inactive business records for local area businesses. Despite quick response by local fire authorities, damage to the building was extensive, and the building and its contents were a total loss. We have been sued by six customers. Four of those lawsuits have been settled and two remain pending, including a claim asserted by Azienda per i Transporti Autoferrotranviari del Comune di Roma, S.p.A, seeking 42,600 Euros for the loss of its current and historical archives. We have also received correspondence from other affected customers, including certain customers demanding payment under various theories of liability. Although our warehouse legal liability insurer has reserved its rights to contest coverage related to certain types of potential claims, we believe we carry adequate insurance. We deny any liability with respect to the fire and we have referred these claims to our warehouse legal liability insurer for an appropriate response. We do not expect that this event will have a material impact on our consolidated financial condition, results of operations or cash flows. We sold our Italian operations on April 27, 2012, and we indemnified the buyers related to certain obligations and contingencies associated with this fire. As a result of the sale of the Italian operations, any future statement of operations and cash flow impacts related to the fire will be reflected as discontinued operations. f. Argentina Fire On February 5, 2014, we experienced a fire at a facility we own in Buenos Aires, Argentina. As a result of the quick response by local fire authorities, the fire was contained before the entire facility was destroyed and all employees were safely evacuated; however, a number of first responders lost their lives, or in some cases, were severely injured. The cause of the fire is currently being investigated. We believe we carry adequate insurance and do not expect that this event will have a material impact to our consolidated financial condition, results of operations or cash flows. Revenues from our operations at this facility represent less than 0.5% of our consolidated revenues. In December 2018, we received insurance proceeds of approximately $13,700 related to the involuntary conversion of assets included in the facility and, as a result, we recorded a gain on disposal/write-down of property, plant and equipment, net of $8,814 during the fourth quarter of 2018. g. Brooklyn Fire (Recall) On January 31, 2015, a former Recall leased facility located in Brooklyn, New York was completely destroyed by a fire. Approximately 900,000 cartons of customer records were lost impacting approximately 1,200 customers. No one was injured as a result of the fire. We believe we carry adequate insurance to cover any losses resulting from the fire. There is one pending customer-related lawsuit stemming from the fire, which is being defended by our warehouse legal liability insurer. We have also received correspondence from other customers, under various theories of liability. We deny any liability with respect to the fire and we have referred these claims to our insurer for an appropriate response. We do not expect that this event will have a material impact on our consolidated financial condition, results of operations or cash flows. _______________________________________________________________________________ Our policy related to business interruption insurance recoveries is to record gains within Other expense (income), net in our Consolidated Statements of Operations and proceeds received within cash flows from operating activities in our Consolidated Statements of Cash Flows. Such amounts are recorded in the period the cash is received. Our policy with respect to involuntary conversion of property, plant and equipment is to record any gain or loss within (Gain) loss on disposal/write-down of property, plant and equipment, net within operating income in our Consolidated Statements of Operations and proceeds received within cash flows from investing activities within our Consolidated Statements of Cash Flows. Losses are recorded when incurred and gains are recorded in the period when the cash received exceeds the carrying value of the related property, plant and equipment.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions In March 2019, in connection with the Consumer Storage Transaction and the MakeSpace Investment (both as defined and described more fully in Note 13), we entered into a storage and service agreement with the MakeSpace JV (as defined in Note 13) 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 Global RIM Business segment. We recognized approximately $22,500 of revenue during the year ended December 31, 2019, associated with the MakeSpace Agreement. During the years ended December 31, 2019, 2018 and 2017 , the Company had no other related party transactions.

Stockholders' Equity Matters

Stockholders' Equity Matters	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Stockholders' Equity Matters	Our board of directors has adopted a dividend policy under which we have paid, and in the future intend to pay, quarterly cash dividends on our common stock. The amount and timing of future dividends will continue to be subject to the approval of our board of directors, in its sole discretion, and to applicable legal requirements. In 2017 , 2018 and 2019 , our board of directors declared the following dividends: Declaration Date Dividend Per Share Record Date Total Amount Payment Date February 15, 2017 $ 0.5500 March 15, 2017 $ 145,235 April 3, 2017 May 24, 2017 0.5500 June 15, 2017 145,417 July 3, 2017 July 27, 2017 0.5500 September 15, 2017 146,772 October 2, 2017 October 24, 2017 0.5875 December 15, 2017 166,319 January 2, 2018 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 October 31, 2019 0.6185 December 16, 2019 177,687 January 2, 2020 During the years ended December 31, 2019 , 2018 , and 2017 , we declared distributions to our stockholders of $703,752 , $679,130 and $603,743 , respectively. These distributions represent approximately $2.45 per share, $2.38 per share and $2.27 per share for the years ended December 31, 2019 , 2018 , and 2017 , respectively, based on the weighted average number of common shares outstanding during each respective year. For federal income tax purposes, distributions to our stockholders are generally treated as nonqualified ordinary dividends (potentially eligible for the lower effective tax rates available for "qualified REIT dividends"), qualified ordinary dividends or return of capital. The United States Internal Revenue Service requires historical C corporation earnings and profits to be distributed prior to any REIT distributions, which may affect the character of each distribution to our stockholders, including whether and to what extent each distribution is characterized as a qualified or nonqualified ordinary dividend. In addition, certain of our distributions qualify as capital gain distributions. For the years ended December 31, 2019 , 2018 , and 2017 , the dividends we paid on our common shares were classified as follows: Year Ended December 31, 2019 2018 2017 Nonqualified ordinary dividends 54.8 % 83.0 % 82.1 % Qualified ordinary dividends 4.5 % 4.8 % 17.9 % Capital gains 14.7 % 5.8 % — % Return of capital 26.0 % 6.4 % — % 100.0 % 100.0 % 100.0 % Dividends paid during the years ended December 31, 2019 , 2018 , and 2017 which were classified as qualified ordinary dividends for federal income tax purposes primarily related to the distribution of historical C corporation earnings and profits related to certain acquisitions completed during the years ended December 31, 2019 , 2018 , and 2017 . In 2019, the percentage of our dividend that was classified as a capital gain was 14.7% and primarily related to the sale of land and buildings in the United States and United Kingdom. In 2018, the percentage of our dividend that was classified as a capital gain was 5.8% and primarily relates to the sale of land and buildings in the United Kingdom . In 2017, none of our dividends were characterized as a return of capital primarily due to the impact of the Deemed Repatriation Transition Tax. See Note 7 for further disclosure regarding the impact of the Deemed Repatriation Transition Tax. At The Market (ATM) Equity Program In October 2017, we entered into a distribution agreement (the “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”). Sales of our common stock made pursuant to the Distribution Agreement may be made in negotiated transactions or transactions that are deemed to be “at the market” offerings as defined in Rule 415 under the Securities Act, including sales made directly on the NYSE, or sales made to or through a market maker other than on an exchange, or as otherwise agreed between the applicable Agent and us. We intend to use the net proceeds from sales of our common stock pursuant to the At The Market (ATM) Equity Program for general corporate purposes, which may include acquisitions and investments, including acquisitions and investments in our Global Data Center Business, and repaying amounts outstanding from time to time under the Revolving Credit Facility. During the quarter and year ended December 31, 2019 , there were no shares of common stock sold under the At The Market (ATM) Equity Program. During the year ended December 31, 2018 , under the At The Market (ATM) Equity Program, we sold an aggregate of 273,486 shares of common stock for gross proceeds of approximately $8,800 , generating net proceeds of $8,716 , after deducting commissions of $90 . During the year ended December 31, 2017, under the At The Market (ATM) Equity Program, we sold an aggregate of 1,481,053 shares of common stock for gross proceeds of approximately $60,000 , generating net proceeds of $59,100 after deducting commissions of $900 . As of December 31, 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 . Equity Offering On December 12, 2017, we entered into an underwriting agreement (the "Underwriting Agreement") with a syndicate of 16 banks (the “Underwriters”) related to the public offering by us of 14,500,000 shares (the “Firm Shares”) of our common stock (the “Equity Offering”). The offering price to the public for the Equity Offering was $37.00 per share, and we agreed to pay the Underwriters an underwriting commission of $1.38195 per share. The net proceeds to us from the Equity Offering, after deducting underwriters' commissions, was $516,462 . Pursuant to the Underwriting Agreement, we granted the Underwriters a 30-day option to purchase from us up to an additional 2,175,000 shares of common stock (the “Option Shares”) at the public offering price, less the underwriting commission and less an amount per share equal to any dividends or distributions declared by us and payable on the Firm Shares but not payable on the Option Shares (the “Over-Allotment Option"). On January 10, 2018, the Underwriters exercised the Over-Allotment Option in its entirety. The net proceeds to us from the exercise of the Over-Allotment Option, after deducting underwriters' commissions and the per share value of the dividend we declared on our common stock on October 24, 2017 (for which the record date was December 15, 2017) which was paid on January 2, 2018, was approximately $76,200 . The net proceeds of the Equity Offering and the Over-Allotment Option, together with the net proceeds from the issuance of the 5 1 / 4 % Notes, were used to finance the purchase price of the IODC Transaction, and to pay related fees and expenses. At December 31, 2017, the net proceeds of the Equity Offering, together with the net proceeds from the 5 1 / 4 % Notes, were used to temporarily repay borrowings under our Revolving Credit Facility and invest in money market funds.

Divestments

Divestments	12 Months Ended
	Dec. 31, 2019
Discontinued Operations and Disposal Groups [Abstract]
Divestments	a. Consumer Storage Transaction 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 11). 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 discontinued operations 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 Consolidated Statements of Operations for the year ended December 31, 2019 through the closing date of the Consumer Storage Transaction and for the years ended December 31, 2018 and 2017 and the cash flows associated with this business are presented as a component of cash flows from continuing operations in our Consolidated Statements of Cash Flows for the year ended December 31, 2019 through the closing date of the Consumer Storage Transaction and for the years ended December 31, 2018 and 2017. As a result of the Consumer Storage Transaction, we recorded a gain on sale of approximately $4,200 to Other expense (income), 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 December 31, 2019 is $18,570 , and is presented as a component of Other within Other assets, net in our Consolidated Balance Sheet. b. IMFS Divestment On September 28, 2018, Iron Mountain Fulfillment Services, Inc. ("IMFS"), a consolidated subsidiary of IMI that operated our fulfillment services business in the United States, sold substantially all of its assets for total consideration of approximately $3,000 (the "IMFS Divestment"). We have concluded that the IMFS Divestment does not meet the criteria to be reported as discontinued operations 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 Consolidated Statements of Operations for the years ended December 31, 2018 and 2017 and the cash flows associated with this business are presented as a component of cash flows from continuing operations in our Consolidated Statements of Cash Flows for the years ended December 31, 2018 and 2017 through the sale date. The fair value of the consideration received as a result of the IMFS Divestment approximated the carrying value of IMFS and, therefore, during the third quarter of 2018, we recorded an insignificant loss in connection with the IMFS Divestment to Other (income) expense, net. c. Russia and Ukraine Divestment On May 30, 2017, IM EES sold its records and information management operations in Russia and Ukraine to OSG Records Management (Europe) Limited ("OSG") in a stock transaction (the “Russia and Ukraine Divestment”). As consideration for the Russia and Ukraine Divestment, IM EES received a 25% equity interest in OSG (the “OSG Investment”). We have concluded that the Russia and Ukraine Divestment does not meet the criteria to be reported as discontinued operations in our consolidated financial statements, as our decision to divest these businesses 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 these businesses are presented as a component of Income (loss) from continuing operations in our Consolidated Statement of Operations for the year ended December 31, 2017 through the sale date and the cash flows associated with these businesses are presented as a component of cash flows from continuing operations in our Consolidated Statement of Cash Flows for the year ended December 31, 2017 through the sale date. As a result of the Russia and Ukraine Divestment, we recorded a gain on sale of $38,869 to Other expense (income), net, in the second quarter of 2017, representing the excess of the fair value of the consideration received over the carrying value of our businesses in Russia and Ukraine. As of the closing date of the Russia and Ukraine Divestment, the fair value of the OSG Investment was approximately $18,000 . We account for the OSG Investment as an equity method investment. As of the closing date of the Russia and Ukraine Divestment, the carrying value of our businesses in Russia and Ukraine was a credit balance of $20,869 , which consisted of (i) a credit balance of approximately $29,100 of cumulative translation adjustment associated with our businesses in Russia and Ukraine that was reclassified from accumulated other comprehensive items, net, (ii) the carrying value of the net assets of our businesses in Russia and Ukraine, excluding goodwill, of $4,716 and (iii) $3,515 of goodwill associated with our former Northern and Eastern Europe reporting unit (of which our businesses in Russia and Ukraine were a component of prior to the Russia and Ukraine Divestment), which was allocated, on a relative fair value basis, to our businesses in Russia and Ukraine. The carrying value of the OSG Investment at December 31, 2019 and 2018 is $17,012 and $17,514 , respectively, and is presented as a component of Other within Other assets, net in our Consolidated Balance Sheets. On January 9, 2020 we acquired the remaining 75% equity interest in OSG. See Note 15. d. Recall Divestments In connection with the acquisition of Recall, we sought regulatory approval of the Recall Transaction from the United States Department of Justice (the "DOJ"), the Australian Competition and Consumer Commission (the "ACCC"), the Canada Competition Bureau (the "CCB") and the United Kingdom Competition and Markets Authority (the "CMA"), and as part of the regulatory approval process, we agreed to make certain divestments in the United States, Australia, Canada and the United Kingdom (the "Divestments"), which include the Recall Divestments (as defined below). We have concluded that the following divestments (collectively, the “Recall Divestments”) meet the criteria to be reported as discontinued operations in our Consolidated Statements of Operations and Consolidated Statements of Cash Flows for the years ended December 31, 2019, 2018 and 2017 as the Recall Divestments met the criteria to be reported as assets and liabilities held for sale at, or within a short period of time following, the closing of the Recall Transaction: • The assets and liabilities, including all associated tangible and intangible assets and employees, related to Recall's records and information management facilities in 13 United States cities were sold to Access CIG, LLC (“Access CIG”) on May 4, 2016 (the “Access Sale”); • The assets and liabilities, including associated tangible and intangible assets and employees, related to Recall’s record and information management facilities in two areas of Scotland were sold to Oasis Group on December 9, 2016; and • The assets and liabilities, including all associated tangible and intangible assets and employees, related to certain of Recall’s records and information management facilities in two cities in the United States, and in three cities in Canada, were sold to Arkive Information Management LLC and Arkive Information Management Ltd. on December 29, 2016. The table below summarizes certain results of operations of the Recall Divestments included in discontinued operations for the years ended December 31, 2019 , 2018 and 2017 : Year Ended December 31, Description 2019 2018(1) 2017 Total Revenues $ — $ — $ — Income (Loss) from Discontinued Operations Before Provision (Benefit) for Income Taxes 104 (12,574 ) (8,118 ) (Benefit) Provision for Income Taxes — (147 ) (1,827 ) Income (Loss) from Discontinued Operations, Net of Tax $ 104 $ (12,427 ) $ (6,291 ) ______________________________________________________________________________ (1) As indicated above, on May 4, 2016, we completed the Access Sale. As part of the total consideration for the Access Sale we were entitled to receive up to $25,000 of additional cash proceeds (the "Access Contingent Consideration"). During 2018, we settled the Access Contingent Consideration with Access CIG, as well as indemnification claims Access CIG previously raised in connection with the Access Sale. Changes to the realizable value of the Access Contingent Consideration were recorded to our Consolidated Statement of Operations as a component of discontinued operations. The loss from discontinued operations during the year ended December 31, 2018 primarily relates to losses incurred due to the resolution of the post-closing adjustments to the Access Contingent Consideration in connection with our agreement with Access CIG.

Restructuring Charges

Restructuring Charges	12 Months Ended
	Dec. 31, 2019
Restructuring and Related Activities [Abstract]
Restructuring Charges	Restructuring Charges We estimate total costs associated with Project Summit to be approximately $240,000 which includes operating expenditures ("Restructuring Charges") and capital expenditures. During the fourth quarter of 2019, we incurred approximately $48,600 of Restructuring Charges primarily related to employee severance costs and professional fees. Our accrued liabilities for the Restructuring Charges in our Consolidated Balance Sheet at December 31, 2019 is not material. Restructuring Charges included in the accompanying Consolidated Statement of Operations by segment for the year ended December 31, 2019 is as follows: Year Ended December 31, 2019 Global RIM Business $ 21,900 Global Data Center Business 306 Corporate and Other Business 26,391 Restructuring Charges $ 48,597

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On January 9, 2020 we acquired the remaining 75% equity interest in OSG for cash consideration of 6,026,020 Russian rubles (or approximately $95,100 , based upon the exchange rate between the Russian ruble and the United States dollar on the closing date of the OSG Acquisition) (the "OSG Acquisition"). The OSG Acquisition will enable us to extend our Global RIM Business in Russia, Ukraine, Kazakhstan, Belarus, and Armenia. Commencing on the date of the OSG Acquisition, we will fully consolidate the results of OSG within our consolidated financial statements.

SCHEDULE III - SCHEDULE OF REAL

SCHEDULE III - SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION	12 Months Ended
	Dec. 31, 2019
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]
Schedule III - Schedule of Real Estate and Accumulated Depreciation	IRON MOUNTAIN INCORPORATED SCHEDULE III—SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION DECEMBER 31, 2019 (Dollars in thousands) Schedule III - Schedule of Real Estate and Accumulated Depreciation ("Schedule III") reflects the cost and associated accumulated depreciation for the real estate facilities that are owned. The gross cost included in Schedule III includes the cost for land, land improvements, buildings, building improvements and racking. Schedule III does not reflect the 1,150 leased facilities in our real estate portfolio. In addition, Schedule III does not include any value for financing leases for property that is classified as land, buildings and building improvements in our consolidated financial statements. The following table presents a reconciliation of the gross amount of real estate assets, as presented in Schedule III below, to the sum of the historical book value of land, buildings and building improvements, racking and construction in progress as disclosed in Note 2.f. to Notes to Consolidated Financial Statements as of December 31, 2019: Gross Amount of Real Estate Assets, As Reported on Schedule III $ 3,856,515 Add Reconciling Items: Book value of racking included in leased facilities(1) 1,321,159 Book value of financing leases(2) 439,166 Book value of construction in progress(3) 280,108 Book value of other(4) 73,182 Total Reconciling Items 2,113,615 Gross Amount of Real Estate Assets, As Disclosed in Note 2.f. $ 5,970,130 _______________________________________________________________________________ (1) Represents the gross book value of racking installed in our 1,150 leased facilities, which is included in historical book value of racking in Note 2.f., but excluded from Schedule III. (2) Represents the gross book value of buildings and building improvements that are subject to financing leases, which are included in the historical book value of building and building improvements in Note 2.f., but excluded from Schedule III. (3) Represents the gross book value of non-real estate assets that are included in the historical book value of construction in progress assets in Note 2.f., but excluded from Schedule III, as such assets are not considered real estate associated with owned buildings. The historical book value of real estate assets associated with owned buildings that were related to construction in progress as of December 31, 2019 is included in Schedule III. (4) Represents the gross book value of owned land that is either (i) associated with buildings that are subject to financing leases or (ii) under development, which are included in the historical book value of either land or construction in progress, respectively, in Note 2.f., but excluded from Schedule III. IRON MOUNTAIN INCORPORATED SCHEDULE III—SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued) DECEMBER 31, 2019 (Dollars in thousands) The following table presents a reconciliation of the accumulated depreciation of real estate assets, as presented in Schedule III below, to the total accumulated depreciation for all property, plant and equipment presented on our Consolidated Balance Sheet as of December 31, 2019: Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III $ 1,072,013 Add Reconciling Items: Accumulated Depreciation - non-real estate assets(1) 1,412,193 Accumulated Depreciation - racking in leased facilities(2) 817,069 Accumulated Depreciation - financing leases(3) 124,594 Total Reconciling Items 2,353,856 Accumulated Depreciation, As Reported on Consolidated Balance Sheet $ 3,425,869 _______________________________________________________________________________ (1) Represents the accumulated depreciation of non-real estate assets that is included in the total accumulated depreciation of property, plant and equipment on our Consolidated Balance Sheet, but excluded from Schedule III as the assets to which this accumulated depreciation relates are not considered real estate assets associated with owned buildings. (2) Represents the accumulated depreciation of racking as of December 31, 2019 installed in our 1,150 leased facilities, which is included in total accumulated depreciation of property, plant and equipment on our Consolidated Balance Sheet, but excluded from Schedule III, as disclosed in Footnote 1 to Schedule III. (3) Represents the accumulated depreciation of buildings and building improvements as of December 31, 2019 that are subject to financing leases, which is included in the total accumulated depreciation of property, plant and equipment on our Consolidated Balance Sheet, but excluded from Schedule III, as disclosed in Footnote 1 to Schedule III. IRON MOUNTAIN INCORPORATED SCHEDULE III—SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued) DECEMBER 31, 2019 (Dollars in thousands) (A) (B) (C) (D) (E) (F) Region/Country/State/Campus Address Facilities(1) Encumbrances Initial cost to Company(1) Cost capitalized subsequent to acquisition (1)(2) Gross amount carried at close of current period (1)(8) Accumulated depreciation at close of current period(1)(8) Date of construction or acquired(3) Life on which depreciation in latest income statement is computed North America United States (Including Puerto Rico) 140 Oxmoor Ct, Birmingham, Alabama 1 $ — $ 1,322 $ 953 $ 2,275 $ 1,107 2001 Up to 40 years 1420 North Fiesta Blvd, Gilbert, Arizona 1 — 1,637 2,737 4,374 1,937 2001 Up to 40 years 4802 East Van Buren, Phoenix, Arizona 1 — 15,599 141,274 156,873 257 2019 Up to 40 years 615 North 48th Street, Phoenix, Arizona 1 — 423,107 15,322 438,429 28,395 2018 (5) Up to 40 years 2955 S. 18th Place, Phoenix, Arizona 1 — 12,178 11,461 23,639 5,227 2007 Up to 40 years 4449 South 36th St, Phoenix, Arizona 1 — 7,305 1,045 8,350 5,002 2012 Up to 40 years 8521 E. Princess Drive, Scottsdale, Arizona 1 — 87,865 1,302 89,167 8,139 2018 (5) Up to 40 years 13379 Jurupa Ave, Fontana, California 1 — 10,472 8,714 19,186 9,930 2002 Up to 40 years 600 Burning Tree Rd, Fullerton, California 1 — 4,762 1,897 6,659 2,969 2002 Up to 40 years 21063 Forbes St., Hayward, California 1 — 13,407 351 13,758 2,666 2019 (7) Up to 40 years 5086 4th St, Irwindale, California 1 — 6,800 2,523 9,323 3,589 2002 Up to 40 years 6933 Preston Ave, Livermore, California 1 — 14,585 13,927 28,512 10,535 2002 Up to 40 years 1006 North Mansfield, Los Angeles, California 1 — 749 — 749 109 2014 Up to 40 years 1025 North Highland Ave, Los Angeles, California 1 — 10,168 26,191 36,359 13,914 1988 Up to 40 years 1350 West Grand Ave, Oakland, California 1 — 15,172 6,224 21,396 14,882 1997 Up to 40 years 1760 North Saint Thomas Circle, Orange, California 1 — 4,576 495 5,071 1,842 2002 Up to 40 years 8700 Mercury Lane, Pico Rivera, California 1 — 27,957 213 28,170 9,584 2012 Up to 40 years 8661 Kerns St, San Diego, California 1 — 10,512 6,821 17,333 7,352 2002 Up to 40 years 1915 South Grand Ave, Santa Ana, California 1 — 3,420 1,261 4,681 1,954 2001 Up to 40 years 2680 Sequoia Dr, South Gate, California 1 — 6,329 2,251 8,580 4,177 2002 Up to 40 years 336 Oyster Point Blvd, South San Francisco, California 1 — 15,100 18 15,118 2,168 2019 (7) Up to 40 years 25250 South Schulte Rd, Tracy, California 1 — 3,049 1,774 4,823 2,080 2001 Up to 40 years 3576 N. Moline, Aurora, Colorado 1 — 1,583 4,390 5,973 1,810 2001 Up to 40 years North Stone Ave, Colorado Springs, Colorado 2 — 761 2,718 3,479 1,771 2001 Up to 40 years 4300 Brighton Boulevard, Denver, Colorado 1 — 116,336 19,117 135,453 9,503 2017 Up to 40 years 11333 E 53rd Ave, Denver, Colorado 1 — 7,403 10,215 17,618 9,330 2001 Up to 40 years 5151 E. 46th Ave, Denver, Colorado 1 — 6,312 709 7,021 1,528 2014 Up to 40 years 20 Eastern Park Rd, East Hartford, Connecticut 1 — 7,417 1,891 9,308 6,125 2002 Up to 40 years Bennett Rd, Suffield, Connecticut 2 — 1,768 933 2,701 1,373 2000 Up to 40 years Kennedy Road, Windsor, Connecticut 2 — 10,447 31,140 41,587 20,432 2001 Up to 40 years 293 Ella Grasso Rd, Windsor Locks, Connecticut 1 — 4,021 2,019 6,040 2,846 2002 Up to 40 years 150-200 Todds Ln, Wilmington, Delaware 1 — 7,226 1,044 8,270 5,036 2002 Up to 40 years 13280 Vantage Way, Jacksonville, Florida 1 — 1,853 567 2,420 938 2001 Up to 40 years 12855 Starkey Rd, Largo, Florida 1 — 3,293 2,966 6,259 3,187 2001 Up to 40 years 7801 Riviera Blvd, Miramar, Florida 1 — 8,250 221 8,471 808 2017 Up to 40 years IRON MOUNTAIN INCORPORATED SCHEDULE III—SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued) DECEMBER 31, 2019 (Dollars in thousands) (A) (B) (C) (D) (E) (F) Region/Country/State/Campus Address Facilities(1) Encumbrances Initial cost to Company(1) Cost capitalized subsequent to acquisition (1)(2) Gross amount Accumulated depreciation at close of current period(1)(8) Date of construction or acquired(3) Life on which depreciation in latest income statement is computed United States (Including Puerto Rico) (continued) 10002 Satellite Blvd, Orlando, Florida 1 $ — $ 1,927 $ 295 $ 2,222 $ 886 2001 Up to 40 years 3501 Electronics Way, West Palm Beach, Florida 1 — 4,201 13,678 17,879 6,968 2001 Up to 40 years 1890 MacArthur Blvd, Atlanta Georgia 1 — 1,786 742 2,528 1,123 2002 Up to 40 years 3881 Old Gordon Rd, Atlanta, Georgia 1 — 1,185 326 1,511 863 2001 Up to 40 years 5319 Tulane Drive SW, Atlanta, Georgia 1 — 2,808 3,940 6,748 3,146 2002 Up to 40 years 6111 Live Oak Parkway, Norcross, Georgia 1 — 3,542 1,648 5,190 390 2017 Up to 40 years 3150 Nifda Dr, Smyrna, Georgia 1 — 463 770 1,233 731 1990 Up to 40 years 1301 S. Rockwell St, Chicago, Illinois 1 — 7,947 19,657 27,604 15,927 1999 Up to 40 years 2211 W. Pershing Rd, Chicago, Illinois 1 — 4,264 13,979 18,243 8,435 2001 Up to 40 years 2425 South Halsted St, Chicago, Illinois 1 — 7,470 1,658 9,128 4,310 2006 Up to 40 years 2604 West 13th St, Chicago, Illinois 1 — 404 2,818 3,222 2,799 2001 Up to 40 years 2255 Pratt Blvd, Elk Grove, Illinois 1 — 1,989 3,892 5,881 1,516 2000 Up to 40 years 4175 Chandler Dr Opus No. Corp, Hanover Park, Illinois 1 — 22,048 2,461 24,509 9,552 2014 Up to 40 years 2600 Beverly Drive, Lincoln, Illinois 1 — 1,378 923 2,301 254 2015 Up to 40 years 6090 NE 14th Street, Des Moines, Iowa 1 — 622 504 1,126 408 2003 Up to 40 years South 7th St, Louisville, Kentucky 4 — 709 13,427 14,136 5,302 Various Up to 40 years 26 Parkway Drive (fka 133 Pleasant), Scarborough, Maine 1 — 8,337 387 8,724 3,151 2015 (7) Up to 40 years 8928 McGaw Ct, Columbia, Maryland 1 — 2,198 6,416 8,614 3,591 1999 Up to 40 years 10641 Iron Bridge Rd, Jessup, Maryland 1 — 3,782 1,337 5,119 2,618 2000 Up to 40 years 8275 Patuxent Range Rd, Jessup, Maryland 1 — 10,105 7,703 17,808 10,037 2001 Up to 40 years 96 High St, Billerica, Massachusetts 1 — 3,221 3,926 7,147 3,661 1998 Up to 40 years 120 Hampden St, Boston, Massachusetts 1 — 164 930 1,094 542 2002 Up to 40 years 32 George St, Boston, Massachusetts 1 — 1,820 5,391 7,211 5,431 1991 Up to 40 years 3435 Sharps Lot Rd, Dighton, Massachusetts 1 — 1,911 788 2,699 2,085 1999 Up to 40 years 77 Constitution Boulevard, Franklin, Massachusetts 1 — 5,413 218 5,631 713 2014 Up to 40 years 216 Canal St, Lawrence, Massachusetts 1 — 1,298 1,089 2,387 1,270 2001 Up to 40 years Bearfoot Road, Northboro, Massachusetts 2 — 55,923 12,506 68,429 40,067 Various Up to 40 years 38300 Plymouth Road, Livonia, Michigan 1 — 10,285 1,243 11,528 3,937 2015 (7) Up to 40 years 6601 Sterling Dr South, Sterling Heights, Michigan 1 — 1,294 1,150 2,444 1,240 2002 Up to 40 years 1985 Bart Ave, Warren, Michigan 1 — 1,802 530 2,332 1,113 2000 Up to 40 years Wahl Court, Warren, Michigan 2 — 3,426 2,635 6,061 3,705 Various Up to 40 years 31155 Wixom Rd, Wixom, Michigan 1 — 4,000 1,381 5,381 2,687 2001 Up to 40 years 3140 Ryder Trail South, Earth City, Missouri 1 — 3,072 3,398 6,470 2,351 2004 Up to 40 years Missouri Bottom Road, Hazelwood, Missouri 4 — 28,282 4,969 33,251 7,708 Various (7) Up to 40 years Leavenworth St/18th St, Omaha, Nebraska 3 — 2,924 19,736 22,660 7,533 Various Up to 40 years 4105 North Lamb Blvd, Las Vegas, Nevada 1 — 3,430 8,957 12,387 5,850 2002 Up to 40 years 17 Hydro Plant Rd, Milton, New Hampshire 1 — 6,179 4,351 10,530 6,523 2001 Up to 40 years IRON MOUNTAIN INCORPORATED SCHEDULE III—SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued) DECEMBER 31, 2019 (Dollars in thousands) (A) (B) (C) (D) (E) (F) Region/Country/State/Campus Address Facilities(1) Encumbrances Initial cost to Company(1) Cost capitalized subsequent to acquisition (1)(2) Gross amount Accumulated depreciation at close of current period(1)(8) Date of construction or acquired(3) Life on which depreciation in latest income statement is computed United States (Including Puerto Rico) (continued) Kimberly Rd, East Brunsick, New Jersey 3 $ — $ 22,105 $ 5,924 $ 28,029 $ 14,303 Various Up to 40 years 3003 Woodbridge Avenue, Edison, New Jersey 1 — 310,404 36,772 347,176 19,038 2018 (5) Up to 40 years 811 Route 33, Freehold, New Jersey 3 — 38,697 55,396 94,093 52,431 Various Up to 40 years 51-69 & 77-81 Court St, Newark, New Jersey 1 — 11,734 9,774 21,508 1,478 2015 Up to 40 years 560 Irvine Turner Blvd, Newark, New Jersey 1 — 9,522 709 10,231 858 2015 Up to 40 years 231 Johnson Ave, Newark, New Jersey 1 — 8,945 1,855 10,800 905 2015 Up to 40 years 650 Howard Avenue, Somerset, New Jersey 1 — 3,585 11,808 15,393 6,027 2006 Up to 40 years 100 Bailey Ave, Buffalo, New York 1 — 1,324 11,086 12,410 6,584 1998 Up to 40 years 64 Leone Ln, Chester, New York 1 — 5,086 1,132 6,218 3,482 2000 Up to 40 years 1368 County Rd 8, Farmington, New York 1 — 2,611 4,788 7,399 4,609 1998 Up to 40 years County Rd 10, Linlithgo, New York 2 — 102 2,959 3,061 1,646 2001 Up to 40 years 77 Seaview Blvd, N. Hempstead New York 1 — 5,719 1,442 7,161 2,721 2006 Up to 40 years 37 Hurds Corner Road, Pawling, New York 1 — 4,323 1,285 5,608 2,271 2005 Up to 40 years Ulster Ave/Route 9W, Port Ewen, New York 3 — 23,137 11,277 34,414 22,318 2001 Up to 40 years Binnewater Rd, Rosendale, New York 2 — 5,142 11,664 16,806 7,062 Various Up to 40 years 220 Wavel St, Syracuse, New York 1 — 2,929 2,712 5,641 2,924 1997 Up to 40 years 2235 Cessna Drive, Burlington, North Carolina 1 — 1,602 328 1,930 222 2015 Up to 40 years 14500 Weston Pkwy, Cary, North Carolina 1 — 1,880 2,224 4,104 1,909 1999 Up to 40 years 826 Church Street, Morrisville, North Carolina 1 — 7,087 266 7,353 1,335 2017 Up to 40 years 1275 East 40th, Cleveland, Ohio 1 — 3,129 599 3,728 2,041 1999 Up to 40 years 7208 Euclid Avenue, Cleveland, Ohio 1 — 3,336 3,268 6,604 3,185 2001 Up to 40 years 4260 Tuller Ridge Rd, Dublin, Ohio 1 — 1,030 1,881 2,911 1,483 1999 Up to 40 years 3366 South Tech Boulevard, Miamisburg, Ohio 1 — 29,092 507 29,599 2,013 2018 (5) Up to 40 years 302 South Byrne Rd, Toledo, Ohio 1 — 602 1,081 1,683 752 2001 Up to 40 years Partnership Drive, Oklahoma City, Oklahoma 3 — 11,437 313 11,750 3,286 2015 (7) Up to 40 years 7530 N. Leadbetter Road, Portland, Oregon 1 — 5,187 1,874 7,061 4,170 2002 Up to 40 years Branchton Rd, Boyers, Pennsylvania 3 — 21,166 232,609 253,775 61,886 Various Up to 40 years 800 Carpenters Crossings, Folcroft, Pennsylvania 1 — 2,457 953 3,410 2,069 2000 Up to 40 years 36 Great Valley Pkwy, Malvern, Pennsylvania 1 — 2,397 7,076 9,473 4,420 1999 Up to 40 years 2300 Newlins Mill Road, Palmer Township, Pennsylvania 1 — 18,365 9,027 27,392 1,412 2017 Up to 40 years Henderson Dr/Elmwood Ave, Sharon Hill, Pennsylvania 2 — 24,153 105 24,258 12,362 Various Up to 40 years Las Flores Industrial Park, Rio Grande, Puerto Rico 1 — 4,185 3,447 7,632 4,416 2001 Up to 40 years 24 Snake Hill Road, Chepachet, Rhode Island 1 — 2,659 2,202 4,861 2,928 2001 Up to 40 years 1061 Carolina Pines Road, Columbia, South Carolina 1 — 11,776 2,340 14,116 3,223 2016 (7) Up to 40 years 2301 Prosperity Way, Florence, South Carolina 1 — 2,846 1,258 4,104 1,217 2016 (7) Up to 40 years Mitchell Street, Knoxville, Tennessee 2 — 718 4,557 5,275 2,022 Various Up to 40 years 6005 Dana Way, Nashville, Tennessee 2 — 1,827 2,915 4,742 1,921 2000 Up to 40 years IRON MOUNTAIN INCORPORATED SCHEDULE III—SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued) DECEMBER 31, 2019 (Dollars in thousands) (A) (B) (C) (D) (E) (F) Region/Country/State/Campus Address Facilities(1) Encumbrances Initial cost to Company(1) Cost capitalized subsequent to acquisition (1)(2) Gross amount Accumulated depreciation at close of current period(1)(8) Date of construction or acquired(3) Life on which depreciation in latest income statement is computed United States (Including Puerto Rico) (continued) 11406 Metric Blvd, Austin, Texas 1 $ — $ 5,489 $ 2,211 $ 7,700 $ 4,090 2002 Up to 40 years 6600 Metropolis Drive, Austin, Texas 1 — 4,519 454 4,973 1,358 2011 Up to 40 years Capital Parkway, Carrollton, Texas 3 — 8,299 246 8,545 2,661 2015 (7) Up to 40 years 1800 Columbian Club Dr, Carrolton, Texas 1 — 19,673 1,179 20,852 9,438 2013 Up to 40 years 1905 John Connally Dr, Carrolton, Texas 1 — 2,174 791 2,965 1,387 2000 Up to 40 years 13425 Branchview Ln, Dallas, Texas 1 — 3,518 3,680 7,198 4,193 2001 Up to 40 years Cockrell Ave, Dallas, Texas 1 — 1,277 1,596 2,873 1,979 2000 Up to 40 years 1819 S. Lamar St, Dallas, Texas 1 — 3,215 1,083 4,298 2,578 2000 Up to 40 years 2000 Robotics Place Suite B, Fort Worth, Texas 1 — 5,328 2,065 7,393 2,951 2002 Up to 40 years 1202 Ave R, Grand Prairie, Texas 1 — 8,354 2,173 10,527 5,947 2003 Up to 40 years 15333 Hempstead Hwy, Houston, Texas 3 — 6,327 37,648 43,975 13,034 2004 Up to 40 years 2600 Center Street, Houston, Texas 1 — 2,840 2,172 5,012 2,575 2000 Up to 40 years 3502 Bissonnet St, Houston, Texas 1 — 7,687 692 8,379 5,840 2002 Up to 40 years 5249 Glenmont Ave, Houston, Texas 1 — 3,467 2,401 5,868 2,753 2000 Up to 40 years 5707 Chimney Rock, Houston, Texas 1 — 1,032 1,189 2,221 1,089 2002 Up to 40 years 5757 Royalton Dr, Houston, Texas 1 — 1,795 994 2,789 1,300 2000 Up to 40 years 6203 Bingle Rd, Houston, Texas 1 — 3,188 11,476 14,664 8,672 2001 Up to 40 years 7800 Westpark, Houston, Texas 1 — 6,323 1,276 7,599 1,832 2015 (7) Up to 40 years 9601 West Tidwell, Houston, Texas 1 — 1,680 2,305 3,985 1,302 2001 Up to 40 years 15300 FM 1825, Pflugerville, Texas 2 — 3,811 7,952 11,763 5,042 2001 Up to 40 years 930 Avenue B, San Antonio, Texas 1 — 393 245 638 259 1998 Up to 40 years 931 North Broadway, San Antonio, Texas 1 — 3,526 1,144 4,670 2,857 1999 Up to 40 years 1665 S. 5350 West, Salt Lake City, Utah 1 — 6,239 4,270 10,509 5,236 2002 Up to 40 years 11052 Lakeridge Pkwy, Ashland, Virginia 1 — 1,709 1,924 3,633 1,842 1999 Up to 40 years 2301 International Parkway, Fredericksburg, Virginia 1 — 20,980 30 21,010 5,777 2015 (7) Up to 40 years 4555 Progress Road, Norfolk, Virginia 1 — 6,527 1,088 7,615 3,297 2011 Up to 40 years 3725 Thirlane Rd. N.W., Roanoke, Virginia 1 — 2,577 172 2,749 1,119 2015 (7) Up to 40 years 7700-7730 Southern Dr, Springfield, Virginia 1 — 14,167 2,651 16,818 9,475 2002 Up to 40 years 8001 Research Way, Springfield, Virginia 1 — 5,230 2,790 8,020 3,384 2002 Up to 40 years 22445 Randolph Dr, Sterling, Virginia 1 — 7,598 3,724 11,322 6,018 2005 Up to 40 years 307 South 140th St, Burien, Washington 1 — 2,078 2,367 4,445 2,323 1999 Up to 40 years 8908 W. Hallett Rd, Cheney, Washington 1 — 510 4,259 4,769 2,066 1999 Up to 40 years 6600 Hardeson Rd, Everett, Washington 1 — 5,399 3,404 8,803 3,543 2002 Up to 40 years 19826 Russell Rd, South, Kent, Washington 1 — 14,793 9,752 24,545 10,705 2002 Up to 40 years 1201 N. 96th St, Seattle, Washington 1 — 4,496 2,112 6,608 3,556 2001 Up to 40 years 4330 South Grove Road, Spokane, Washington 1 — 3,906 850 4,756 472 2015 Up to 40 years 12021 West Bluemound Road, Wauwatosa, Wisconsin 1 — 1,307 2,124 3,431 1,445 1999 Up to 40 years 179 — 1,908,077 1,070,345 2,978,422 791,249 IRON MOUNTAIN INCORPORATED SCHEDULE III—SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued) DECEMBER 31, 2019 (Dollars in thousands) (A) (B) (C) (D) (E) (F) Region/Country/State/Campus Address Facilities(1) Encumbrances Initial cost to Company(1) Cost capitalized subsequent to acquisition (1)(2) Gross amount Accumulated depreciation at close of current period(1)(8) Date of construction or acquired(3) Life on which depreciation in latest income statement is computed Canada One Command Court, Bedford 1 $ — $ 3,847 $ 4,482 $ 8,329 $ 4,126 2000 Up to 40 years 195 Summerlea Road, Brampton 1 — 5,403 6,479 11,882 5,357 2000 Up to 40 years 10 Tilbury Court, Brampton 1 — 5,007 17,257 22,264 7,916 2000 Up to 40 years 8825 Northbrook Court, Burnaby 1 — 8,091 2,062 10,153 4,648 2001 Up to 40 years 8088 Glenwood Drive, Burnaby 1 — 4,326 7,114 11,440 4,658 2005 Up to 40 years 5811 26th Street S.E., Calgary 1 — 14,658 8,509 23,167 11,114 2000 Up to 40 years 3905-101 Street, Edmonton 1 — 2,020 640 2,660 1,578 2000 Up to 40 years 68 Grant Timmins Drive, Kingston 1 — 3,639 660 4,299 330 2016 Up to 40 years 3005 Boul. Jean-Baptiste Deschamps, Lachine 1 — 2,751 138 2,889 1,382 2000 Up to 40 years 1655 Fleetwood, Laval 1 — 8,196 18,161 26,357 12,687 2000 Up to 40 years 4005 Richelieu, Montreal 1 — 1,800 2,531 4,331 1,699 2000 Up to 40 years 1209 Algoma Rd, Ottawa 1 — 1,059 6,899 7,958 4,019 2000 Up to 40 years 1650 Comstock Rd, Ottawa 1 — 7,478 (70 ) 7,408 2,647 2017 Up to 40 years 235 Edson Street, Saskatoon 1 — 829 1,676 2,505 855 2008 Up to 40 years 640 Coronation Drive, Scarborough 1 — 1,853 1,208 3,061 1,279 2000 Up to 40 years 610 Sprucewood Ave, Windsor 1 — 1,243 667 1,910 676 2007 Up to 40 years 16 — 72,200 78,413 150,613 64,971 195 — 1,980,277 1,148,758 3,129,035 856,220 IRON MOUNTAIN INCORPORATED SCHEDULE III—SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued) DECEMBER 31, 2019 (Dollars in thousands) (A) (B) (C) (D) (E) (F) Region/Country/State/Campus Address Facilities(1) Encumbrances Initial cost to Cost capitalized (1)(2) Gross amount Accumulated Date of Life on which Europe Gewerbeparkstr. 3, Vienna, Austria 1 $ — $ 6,542 $ 8,051 $ 14,593 $ 3,514 2010 Up to 40 years Woluwelaan 147, Diegem, Belgium 1 — 2,541 6,309 8,850 4,218 2003 Up to 40 years Stupničke Šipkovine 62, Zagreb, Croatia 1 — 1,408 572 1,980 33 2018 Up to 40 years Kratitirion 9 Kokkinotrimithia Industrial District, Nicosia, Cyprus 1 — 3,136 3,227 6,363 434 2017 Up to 40 years Karyatidon 1, Agios Sylas Industrial Area (3rd), Limassol, Cyprus 1 — 1,935 (46 ) 1,889 158 2017 Up to 40 years 65 Egerton Road, Birmingham, England 1 — 6,980 1,550 8,530 4,888 2003 Up to 40 years Corby 278, Long Croft Road, Corby, England 1 — 20,486 744 21,230 537 2018 Up to 40 years Otterham Quay Lane, Gillingham, England 9 — 7,418 3,430 10,848 5,269 2003 Up to 40 years Pennine Way, Hemel Hempstead, England 1 — 10,847 6,113 16,960 7,002 2004 Up to 40 years Kemble Industrial Park, Kemble, England 2 — 5,277 6,990 12,267 8,524 2004 Up to 40 years Gayton Road, Kings Lynn, England 3 — 3,119 1,829 4,948 2,872 2003 Up to 40 years Cody Road, London, England 3 — 20,307 8,816 29,123 11,398 Various Up to 40 years 17 Broadgate, Oldham, England 1 — 4,039 342 4,381 2,342 2008 Up to 40 years Harpway Lane, Sopley, England 1 — 681 1,445 2,126 1,384 2004 Up to 40 years Unit 1A Broadmoor Road, Swindom, England 1 — 2,636 478 3,114 1,190 2006 Up to 40 years Jeumont-Schneider, Champagne Sur Seine, France 3 — 1,750 2,429 4,179 2,214 2003 Up to 40 years Bat I-VII Rue de Osiers, Coignieres, France 4 — 21,318 (747 ) 20,571 3,904 2016 (4) Up to 40 years 26 Rue de I Industrie, Fergersheim, France 1 — 1,322 (80 ) 1,242 235 2016 (4) Up to 40 years Bat A, B, C1, C2, C3 Rue Imperiale, Gue de Longroi, France 1 — 3,390 700 4,090 846 2016 (4) Up to 40 years Le Petit Courtin Site de Dois, Gueslin, Mingieres, France 1 — 14,141 (272 ) 13,869 1,838 2016 (4) Up to 40 years ZI des Sables, Morangis, France 1 582 12,407 15,136 27,543 18,712 2004 Up to 40 years 45 Rue de Savoie, Manissieux, Saint Priest, France 1 — 5,546 (185 ) 5,361 779 2016 (4) Up to 40 years Gutenbergstrabe 55, Hamburg, Germany 1 — 4,022 742 4,764 966 2016 (4) Up to 40 years Brommer Weg 1, Wipshausen, Germany 1 — 3,220 1,571 4,791 3,272 2006 Up to 40 years Warehouse and Offices 4 Springhill, Cork, Ireland 1 — 9,040 2,534 11,574 4,604 2014 Up to 40 years 17 Crag Terrace, Dublin, Ireland 1 — 2,818 742 3,560 1,333 2001 Up to 40 years Damastown Industrial Park, Dublin, Ireland 1 — 16,034 6,983 23,017 7,689 2012 Up to 40 years Portsmuiden 46, Amsterdam, The Netherlands 1 — 1,852 1,824 3,676 2,255 2015 (7) Up to 40 years Schepenbergweg 1, Amsterdam, The Netherlands 1 — 1,258 (657 ) 601 300 2015 (7) Up to 40 years Vareseweg 130, Rotterdam, The Netherlands 1 — 1,357 1,022 2,379 1,691 2015 (7) Up to 40 years Howemoss Drive, Aberdeen, Scotland 2 — 6,970 5,556 12,526 4,912 Various Up to 40 years Traquair Road, Innerleithen, Scotland 1 — 113 2,170 2,283 1,101 2004 Up to 40 years IRON MOUNTAIN INCORPORATED SCHEDULE III—SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued) DECEMBER 31, 2019 (Dollars in thousands) (A) (B) (C) (D) (E) (F) Region/Country/State/Campus Address Facilities(1) Encumbrances Initial cost to Company(1) Cost capitalized subsequent to acquisition (1)(2) Gross amount Accumulated depreciation at close of current period(1)(8) Date of construction or acquired(3) Life on which depreciation in latest income statement is computed Europe (Continued) Nettlehill Road, Houston Industrial Estate, Livingston, Scotland 1 $ — $ 11,517 $ 25,433 $ 36,950 $ 17,916 2001 Up to 40 years Av Madrid s/n Poligono Industrial Matillas, Alcala de Henares, Spain 1 — 186 317 503 264 2014 Up to 40 years Calle Bronce, 37, Chiloeches, Spain 1 — 11,011 1,845 12,856 3,088 2010 Up to 40 years Ctra M.118 , Km.3 Parcela 3, Madrid, Spain 1 — 3,981 5,719 9,700 6,460 2001 Up to 40 years Abanto Ciervava, Spain 2 — 1,053 (75 ) 978 446 Various Up to 40 years 57 582 231,658 122,557 354,215 138,588 Latin America Amancio Alcorta 2396, Buenos Aires, Argentina 2 — 655 1,188 1,843 535 Various Up to 40 years Azara 1245, Buenos Aires, Argentina 1 — 166 (162 ) 4 — 1998 Up to 40 years Saraza 6135, Buenos Aires, Argentina 1 — 144 98 242 52 1995 Up to 40 years Spegazzini, Ezeiza Buenos Aires, Argentina 1 — 12,773 (9,554 ) 3,219 582 2012 Up to 40 years Av Ernest de Moraes 815, Bairro Fim do Campo, Jarinu Brazil 1 — 12,562 (2,267 ) 10,295 1,524 2016 (4) Up to 40 years Rua Peri 80, Jundiai, Brazil 2 — 8,894 (1,760 ) 7,134 1,141 2016 (4) Up to 40 years Francisco de Souza e Melo, Rio de Janerio, Brazil 3 — 1,868 10,436 12,304 3,341 Various Up to 40 years Hortolandia, Sao Paulo, Brazil 1 — 24,078 1,279 25,357 3,569 2014 Up to 40 years El Taqueral 99, Santiago, Chile 2 — 2,629 32,773 35,402 11,212 2006 Up to 40 years Panamericana Norte 18900, Santiago, Chile 5 — 4,001 18,831 22,832 7,261 2004 Up to 40 years Avenida Prolongacion del Colli 1104, Guadalajara, Mexico 1 — 374 1,292 1,666 1,016 2002 Up to 40 years Privada Las Flores No. 25 (G3), Guadalajara, Mexico 1 — 905 1,278 2,183 998 2004 Up to 40 years Tula KM Parque de Las, Huehuetoca, Mexico 2 — 19,937 (771 ) 19,166 2,864 2016 (4) Up to 40 years Carretera Pesqueria Km2.5(M3), Monterrey, Mexico 2 — 3,537 3,691 7,228 2,636 2004 Up to 40 years Lote 2, Manzana A, (T2& T3), Toluca, Mexico 1 — 2,204 4,790 6,994 5,167 2002 Up to 40 years Prolongacion de la Calle 7 (T4), Toluca, Mexico 1 — 7,544 15,171 22,715 7,341 2007 Up to 40 years Panamericana Sur, KM 57.5, Lima, Peru 7 — 1,549 893 2,442 1,203 Various Up to 40 years Av. Elmer Faucett 3462, Lima, Peru 2 1,232 4,112 5,314 9,426 4,656 Various Up to 40 years Calle Los Claveles-Seccion 3, Lima, Peru 1 — 8,179 32,720 40,899 9,227 2010 Up to 40 years 37 1,232 116,111 115,240 231,351 64,325 IRON MOUNTAIN INCORPORATED SCHEDULE III—SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued) DECEMBER 31, 2019 (Dollars in thousands) (A) (B) (C) (D) (E) (F) Region/Country/State/Campus Address Facilities(1) Encumbrances Initial cost to Cost capitalized (1)(2) Gross amount Accumulated Date of Life on which Asia Warehouse No 4, Shanghai, China 1 $ — $ 1,530 $ 671 $ 2,201 $ 373 2013 Up to 40 years Jalan Karanggan Muda Raya No 59, Bogor Indonesia 1 — 7,897 (316 ) 7,581 2,195 2017 Up to 40 years 1 Serangoon North Avenue 6, Singapore 1 — 58,637 21,633 80,270 5,058 2018 (7) Up to 40 years 2 Yung Ho Road, Singapore 1 — 10,395 871 11,266 836 2016 (4) Up to 40 years 26 Chin Bee Drive, Singapore 1 — 15,699 1,315 17,014 1,262 2016 (4) Up to 40 years IC1 69 Moo 2, Soi Wat Namdaeng, Bangkok, Thailand 2 — 13,226 6,136 19,362 2,659 2016 (4) Up to 40 years 7 — 107,384 30,310 137,694 12,383 Australia 8 Whitestone Drive, Austins Ferry, Australia 1 — 681 2,532 3,213 404 2012 Up to 40 years 6 Norwich Street, South Launceston, Australia 1 — 1,090 (83 ) 1,007 93 2015 Up to 40 years 2 — 1,771 2,449 4,220 497 Total 298 $ 1,814 $ 2,437,201 $ 1,419,314 $ 3,856,515 $ 1,072,013 ____________________________________ (1) The above information only includes the real estate facilities that are owned. The gross cost includes the cost for land, land improvements, buildings, building improvements and racking. The listing does not reflect the 1,150 leased facilities in our real estate portfolio. In addition, the above information does not include any value for financing leases for property that is classified as land, buildings and building improvements in our consolidated financial statements. (2) Amount includes cumulative impact of foreign currency translation fluctuations. (3) Date of construction or acquired represents the date we constructed the facility, acquired the facility through purchase or acquisition. (4) Property was acquired in connection with the Recall Transaction. (5) Property was acquired in connection with the IODC Transaction. (6) Property was acquired in connection with the Credit Suisse Transaction. (7) This date represents the date the categorization of the property was changed from a leased facility to an owned facility. IRON MOUNTAIN INCORPORATED SCHEDULE III—SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued) DECEMBER 31, 2019 (Dollars in thousands) (8) The following tables present the changes in gross carrying amount of real estate owned and accumulated depreciation for the years ended December 31, 2019 and 2018: Year Ended December 31, Gross Carrying Amount of Real Estate 2019 2018 Gross amount at beginning of period $ 3,700,307 $ 2,707,925 Additions during period: Discretionary capital projects 278,508 155,901 Acquisitions(1) — 918,091 Other adjustments(2) 25,077 — Foreign currency translation fluctuations 5,978 (58,798 ) 309,563 1,015,194 Deductions during period: Cost of real estate sold, disposed or written-down (153,355 ) (22,812 ) Gross amount at end of period $ 3,856,515 $ 3,700,307 _______________________________________________________________________________ (1) Includes acquisition of sites through business combinations and purchase accounting adjustments. (2) Includes costs associated with real estate we acquired which primarily includes building improvements and racking, which were previously subject to leases. Year Ended December 31, Accumulated Depreciation 2019 2018 Gross amount of accumulated depreciation at beginning of period $ 1,011,050 $ 909,092 Additions during period: Depreciation 122,366 125,280 Other adjustments(1) 1,314 — Foreign currency translation fluctuations 3,514 (16,016 ) 127,194 109,264 Deductions during period: Amount of accumulated depreciation for real estate assets sold, disposed or written-down (66,231 ) (7,306 ) Gross amount of end of period $ 1,072,013 $ 1,011,050 _______________________________________________________________________________ (1) Includes accumulated depreciation associated with building improvements and racking, which were previously subject to leases. The aggregate cost of our real estate assets for federal tax purposes at December 31, 2019 was approximately $3,812,000 .

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Principals of Consolidation	Principles of Consolidation The accompanying financial statements reflect our financial position, results of operations, comprehensive income (loss), equity and cash flows on a consolidated basis. All intercompany transactions and account balances have been eliminated.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires us to make estimates, judgments and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities at the date of the financial statements and for the period then ended. On an ongoing basis, we evaluate the estimates used. We base our estimates on historical experience, actuarial estimates, current conditions and various other assumptions that we believe to be reasonable under the circumstances. These estimates form the basis for making judgments about the carrying values of assets and liabilities and are not readily apparent from other sources. Actual results may differ from these estimates.
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.
Foreign Currency	Foreign Currency
Derivatives Instruments and Hedging Activities	Derivative Instruments and Hedging Activities Every derivative instrument is required to be recorded in the balance sheet as either an asset or a liability measured at its fair value. Periodically, we acquire derivative instruments that are intended to hedge either cash flows or values that are subject to foreign exchange or other market price risk and not for trading purposes. We have formally documented our hedging relationships, including identification of the hedging instruments and the hedged items, as well as our risk management objectives and strategies for undertaking each hedge transaction. Given the recurring nature of our revenues and the long-term nature of our asset base, we have the ability and the preference to use long-term, fixed interest rate debt to finance our business, thereby preserving our long-term returns on invested capital. We target approximately 75%
Property, Plant and Equipment	Minor maintenance costs are expensed as incurred. Major improvements which extend the life, increase the capacity or improve the safety or the efficiency of property owned are capitalized and depreciated. Major improvements to leased buildings are capitalized as leasehold improvements and depreciated. Property, plant and equipment are stated at cost and depreciated using the straight-line method with the following useful lives (in years): Range Buildings and building improvements 5 to 40 Leasehold improvements 5 to 10 or life of the lease (whichever is shorter) Racking 1 to 20 or life of the lease (whichever is shorter) Warehouse equipment/vehicles 1 to 10 Furniture and fixtures 1 to 10 Computer hardware and software 2 to 5 We develop various software applications for internal use. Computer software costs associated with internal use software are expensed as incurred until certain capitalization criteria are met. Third party consulting costs, as well as payroll and related costs for employees directly associated with, and devoting time to, the development of internal use computer software projects (to the extent time is spent directly on the project) are capitalized. During the years ended December 31, 2019 , 2018 and 2017 , we capitalized $34,650 , $29,407 and $25,166 of costs, respectively, associated with the development of internal use computer software projects. Capitalization begins when the design stage of the application has been completed and it is probable that the project will be completed and used to perform the function intended. Capitalization ends when the asset is ready for its intended use. Depreciation begins when the software is placed in service. Computer software costs that are capitalized are periodically evaluated for impairment.
Long-Lived Assets	Long-Lived Assets We review long-lived assets, including all finite-lived intangible assets, for impairment whenever events or changes in circumstances indicate the carrying amount of such assets may not be recoverable. Recoverability of these assets is determined by comparing the sum of the forecasted undiscounted net cash flows of the operation to which the assets relate to their carrying amount. The operations are generally distinguished by the business segment and geographic region in which they operate. If it is determined that we are unable to recover the carrying amount of the assets, the long-lived assets are written down, on a pro rata basis, to fair value. Fair value is determined based on discounted cash flows or appraised values, depending upon the nature of the assets. Long-lived assets, including finite-lived intangible assets, are amortized over their useful lives. Annually, or more frequently if events or circumstances warrant, we assess whether a change in the lives over which long-lived assets, including finite-lived intangible assets, are amortized is necessary.
Goodwill and Other Intangible Assets	Goodwill and Other Indefinite-Lived Intangible Assets Goodwill and intangible assets with indefinite lives are not amortized but are reviewed annually for impairment or more frequently if impairment indicators arise. Other than goodwill, we currently have no intangible assets that have indefinite lives and which are not amortized. Reporting unit valuations have generally been determined using a combined approach based on the present value of future cash flows (the "Discounted Cash Flow Model") and market multiples (the "Market Approach"). The Discounted Cash Flow Model incorporates significant assumptions including future revenue growth rates, operating margins, discount rates and capital expenditures. The Market Approach requires us to make assumptions related to Adjusted EBITDA multiples. Changes in economic and operating conditions impacting these assumptions or changes in multiples could result in goodwill impairments in future periods. In conjunction with our annual goodwill impairment reviews, we reconcile the sum of the valuations of all of our reporting units to our market capitalization as of such dates.
Customer Relationships and Acquisitions Costs and Other Intangible Assets	Data Center Intangible Assets and Liabilities Finite-lived intangible assets associated with our Global Data Center Business consist of the following: Data Center In-Place Lease Intangible Assets and Data Center Tenant Relationship Intangible Assets Data Center In-Place Lease Intangible Assets (“Data Center In-Place Leases”) and Data Center Tenant Relationship Intangible Assets (“Data Center Tenant Relationships") are acquired through either business combinations or asset acquisitions in our Global Data Center Business. These intangible assets reflect the value associated with acquiring a data center operation with active tenants as of the date of acquisition. The value of Data Center In-Place Leases is determined based upon an estimate of the economic costs (such as lost revenues, tenant improvement costs, commissions, legal expenses and other costs to acquire new data center leases) avoided by acquiring a data center operation with active tenants that would have otherwise been incurred if the data center operation was purchased vacant. Data Center In-Place Leases are amortized over the weighted average remaining term of the acquired data center leases (weighted average of five years as of December 31, 2019 ) and are included in depreciation and amortization in the accompanying Consolidated Statements of Operations. The value of Data Center Tenant Relationships is determined based upon an estimate of the economic costs avoided upon lease renewal of the acquired tenants, based upon expectations of lease renewal. Data Center Tenant Relationships are amortized over the weighted average remaining anticipated life of the relationship with the acquired tenant (weighted average of eight years as of December 31, 2019 ) and are included in depreciation and amortization in the accompanying Consolidated Statements of Operations. Data Center In-Place Leases and Data Center Tenant Relationships are included in Customer relationships, customer inducements and data center lease-based intangibles in the accompanying Consolidated Balance Sheets. Data Center Above-Market and Below-Market In-Place Lease Intangible Assets Data Center Above-Market In-Place Lease Intangible Assets (“Data Center Above-Market Leases”) and Data Center Below-Market In-Place Lease Intangible Assets (“Data Center Below-Market Leases”) are acquired through either business combinations or asset acquisitions in our Global Data Center Business. We record Data Center Above-Market Leases and Data Center Below-Market Leases at the net present value of the difference between (i) the contractual amounts to be paid pursuant to each in-place lease and (ii) management’s estimate of the fair market lease rates for each corresponding in-place lease. Data Center Above-Market Leases (weighted average of four years as of December 31, 2019 ) and Data Center Below-Market Leases (weighted average of nine years as of December 31, 2019 ) are amortized over the remaining non-cancellable term of the acquired in-place lease to storage revenue in the accompanying Consolidated Statements of Operations. Data Center Above-Market Leases are included in Customer relationships, customer inducements and data center lease-based intangibles in the accompanying Consolidated Balance Sheets. Data Center Below-Market Leases are included in Other long-term liabilities in the accompanying Consolidated Balance Sheets. Other finite-lived intangible assets, including trade names, noncompetition agreements and trademarks, are capitalized and amortized over a weighted average of four years as of December 31, 2019 , and are included in depreciation and amortization in the accompanying Consolidated Statements of Operations. Customer relationship intangible assets, which are acquired through either business combinations or acquisitions of customer relationships, are amortized over periods ranging from 10 to 30 years (weighted average of 17 years at December 31, 2019 ) and are included in depreciation and amortization in the accompanying Consolidated Statements of Operations. The value of customer relationship intangible assets is calculated based upon estimates of their fair value.
Deferred Financing Costs	Deferred Financing Costs
Revenues	Customer Inducements Upon the adoption of ASU 2014-09, free intake costs to transport boxes to one of our facilities, which include labor and transportation costs ("Free Move Costs"), are considered a Contract Fulfillment Cost (as defined in Note 2.l.) and, therefore, are now deferred and amortized and included in amortization expense over three years , consistent with the transfer of the performance obligation to the customer to which the asset relates. See Note 2.l. for information regarding the accounting for Free Move Costs, which are now a component of Intake Costs (as defined in Note 2.l.), following the adoption of ASU 2014-09. Payments that are made to a customer's current records management vendor in order to terminate the customer's existing contract with that vendor, or direct payments to a customer ("Permanent Withdrawal Fees"), are amortized over periods ranging from five to 15 years (weighted average of seven years as of December 31, 2019 ) and are included in storage and service revenue in the accompanying Consolidated Statements of Operations. Our accounting for Permanent Withdrawal Fees did not change as a result of the adoption of ASU 2014-09. Free Move Costs (prior to the adoption of ASU 2014-09) and Permanent Withdrawal Fees are collectively referred to as "Customer Inducements". If the customer terminates its relationship with us, the unamortized carrying value of the Customer Inducement intangible asset is charged to expense or revenue. However, in the event of such termination, we generally collect, and record as income, permanent removal fees that generally equal or exceed the amount of the unamortized Customer Inducement intangible asset. Our revenues consist of storage rental revenues as well as service revenues and are reflected net of sales and value-added taxes. Storage rental revenues, which are considered a key driver of financial performance for the storage and information management services industry, consist primarily of recurring periodic rental charges related to the storage of materials or data (generally on a per unit basis) that are typically retained by customers for many years, technology escrow services that protect and manage source code and revenues associated with our data center operations. Service revenues include charges for related service activities, the most significant of which include: (1) the handling of records, including the addition of new records, temporary removal of records from storage, refiling of removed records and courier operations, consisting primarily of the pickup and delivery of records upon customer request; (2) destruction services, consisting primarily of secure shredding of sensitive documents and the subsequent sale of shredded paper for recycling, the price of which can fluctuate from period to period, and customer termination and permanent removal fees; (3) other services, including the scanning, imaging and document conversion services of active and inactive records and project revenues; and (4) consulting services. In May 2014, the Financial Accounting Standards Board ("FASB") issued ASU 2014-09. ASU 2014-09 provides guidance for management to reassess revenue recognition as it relates to: (1) transfer of control, (2) variable consideration, (3) allocation of transaction price based on relative standalone selling price, (4) licenses, (5) time value of money, and (6) contract costs. We adopted ASU 2014-09 as of January 1, 2018 using the modified retrospective method for all of our customer contracts, whereby the cumulative effect of applying ASU 2014-09 is recognized at the date of initial application. At January 1, 2018, we recognized the cumulative effect of initially applying ASU 2014-09 as an adjustment to the opening balance of (Distributions in excess of earnings) Earnings in excess of distributions, resulting in a decrease of approximately $30,200 to stockholders' equity. The reduction of (Distribution in excess of earnings) Earnings in excess of distributions represents the net effect of (i) the write-off of Free Move Costs, net (which were capitalized and amortized prior to the adoption of ASU 2014-09) based upon the net book value of the Free Move Costs as of December 31, 2017, (ii) the recognition of certain Contract Fulfillment Costs, specifically Intake Costs (each as defined below) and commission assets, (iii) the recognition of deferred revenue associated with Intake Costs billed to our customers, and (iv) the deferred income tax impact of the aforementioned items. As we adopted ASU 2014-09 on a modified retrospective basis, the prior period consolidated financial statements were not restated to reflect the adoption of ASU 2014-09 and reflect our revenue policies in place at that time. Storage rental and service revenues are recognized in the month the respective storage rental or service is provided, and customers are generally billed on a monthly basis on contractually agreed-upon terms. Amounts related to future storage rental or prepaid service contracts for customers where storage rental fees or services are billed in advance are accounted for as deferred revenue and recognized ratably over the period the applicable storage rental or service is provided or performed. Revenues from the sales of products, which are included as a component of service revenues, are recognized when products are shipped and title has passed to the customer. Revenues from the sales of products, which represented less than 2% of consolidated revenue for the year ended December 31, 2019 , have historically not been significant. The performance obligation is a series of distinct services (as determined for purposes of ASU 2014-09, a “series”) that have the same pattern of transfer to the customer that is satisfied over time. For those contracts that qualify as a series, we have a right to consideration from the customer in an amount that corresponds directly with the value of the underlying performance obligation transferred to the customer to date. This concept is known as "right to invoice" and we are applying the "right to invoice" practical expedient to all revenues, with the exception of storage revenues in our Global Data Center Business. For all of our businesses, with the exception of the storage component of our Global Data Center Business, each purchasing decision is fully in the control of the customer and, therefore, consideration beyond the current reporting period is variable and allocated to the specific period, which is consistent with the practical expedient described above. Our Global Data Center Business features storage rental provided to the customer at contractually specified rates over a fixed contractual period. The storage rental revenue related to the storage component of our Global Data Center Business is recognized on a straight-line basis over the contract term. The revenue related to the service component of our Global Data Center Business is recognized in the period the related services are provided. The costs associated with the initial movement of customer records into physical storage and certain commissions are considered costs to obtain or fulfill customer contracts (“Contract Fulfillment Costs”). The following describes each of these Contract Fulfillment Costs recognized under ASU 2014-09: Intake Costs (and associated deferred revenue) Upon the adoption of ASU 2014-09, all the costs of the initial intake of customer records into physical storage ("Intake Costs"), regardless of whether or not the services associated with such initial moves are billed to the customer or are provided to the customer at no charge, are deferred and amortized as a component of depreciation and amortization in our Consolidated Statements of Operations over three years, consistent with the transfer of the performance obligation to the customer to which the asset relates. Similarly, in instances where such Intake Costs are billed to the customer, the associated revenue will be deferred and recognized over the same three -year period. Commissions Upon the adoption of ASU 2014-09, certain commission payments that are directly associated with the fulfillment of long-term storage contracts are capitalized and amortized as a component of depreciation and amortization in our Consolidated Statements of Operations over three years, consistent with the transfer of the performance obligation to the customer to which the asset relates. Certain direct commission payments associated with contracts with a duration of one year or less are expensed as incurred under the practical expedient which allows an entity to expense as incurred an incremental cost of obtaining a contract if the amortization period of the asset that the entity otherwise would have recognized is one year or less.
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 typically have lease terms ranging from one to seven years . In February 2016, FASB issued ASU 2016-02 which requires lessees to recognize assets and liabilities on the balance sheet for the rights and the 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, our 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 Consolidated Balance Sheet as of December 31, 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 carry forward 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 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 our 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 in the lease (in the limited circumstances when such rate is explicitly stated) 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 our 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.
Stock-Based Compensation	Stock-Based Compensation We record stock-based compensation expense, utilizing the straight-line method, for the cost of stock options, restricted stock units ("RSUs"), performance units ("PUs") and shares of stock issued under our employee stock purchase plan ("ESPP") (together, "Employee Stock-Based Awards"). We offer an ESPP in which participation is available to substantially all United States and Canadian employees who meet certain service eligibility requirements. The ESPP provides a way for our eligible employees to become stockholders on favorable terms. The ESPP provides for the purchase of our common stock by eligible employees through successive offering periods. We have historically had two six -month offering periods per year, the first of which generally runs from June 1 through November 30 and the second of which generally runs from December 1 through May 31. During each offering period, participating employees accumulate after-tax payroll contributions, up to a maximum of 15% of their compensation, to pay the purchase price at the end of the offering. Participating employees may withdraw from an offering before the purchase date and obtain a refund of the amounts withheld as payroll deductions. At the end of the offering period, outstanding options under the ESPP are exercised, and each employee's accumulated contributions are used to purchase our common stock. The price for shares purchased under the ESPP is 95% Stock Options Under our various stock option plans, options are generally granted with exercise prices equal to the market price of the stock on the date of grant; however, in certain instances, options are granted at prices greater than the market price of the stock on the date of grant. The options we issue become exercisable ratably over a period of either (i) three years from the date of grant and have a contractual life of 10 years from the date of grant, unless the holder's employment is terminated sooner, or (ii) five years from the date of grant and have a contractual life of 10 years from the date of grant, unless the holder's employment is terminated sooner. Our non-employee directors are considered employees for purposes of our stock option plans and stock option reporting. Performance Units Under our various equity compensation plans, we may also make awards of PUs. For the majority of outstanding PUs, the number of PUs earned is determined based on our performance against predefined targets of revenue and return on invested capital ("ROIC") and, with PUs granted in 2018, Adjusted EBITDA (as defined in Note 9). The number of PUs earned may range from 0% to 200% of the initial award. The number of PUs earned is determined based on our actual performance as compared to the targets at the end of a three -year performance period. Certain PUs that we grant will be earned based on a market condition associated with the total return on our common stock in relation to either (i) a subset of the Standard & Poor's 500 Index (for certain PUs granted prior to 2017), or (ii) the MSCI United States REIT Index (for certain PUs granted in 2017 and thereafter), rather than the revenue, ROIC and Adjusted EBITDA targets noted above. The number of PUs earned based on this market condition may range from 0% to 200% of the initial award. All of our PUs will be settled in shares of our common stock and are subject to cliff vesting three years from the date of the original PU grant. As detailed above, PUs granted on or after February 20, 2019 are subject to the 2019 Retirement Criteria. 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. PUs granted prior to February 20, 2019 to employees who terminate their employment during the three -year performance period and on or after attaining age 55 and completing 10 years of qualifying service are eligible for pro-rated vesting, subject to the actual achievement against the predefined targets or a market condition as discussed above, based on the number of full years of service completed following the grant date (but delivery of the shares remains deferred). As a result, PUs are generally expensed over the three-year performance period. All PUs accrue dividend equivalents associated with the underlying stock as we declare dividends. Dividends will generally be paid to holders of PUs in cash upon the settlement date of the associated PU and will be forfeited if the PU does not vest. three Under our various equity compensation plans, we may also grant RSUs. Our RSUs generally have a vesting period of three years from the date of grant. However, RSUs granted to our non-employee directors vest immediately upon grant. All RSUs accrue dividend equivalents associated with the underlying stock as we declare dividends. Dividends will generally be paid to holders of RSUs in cash upon the vesting date of the associated RSU and will be forfeited if the RSU does not vest. The fair value of RSUs is the excess of the market price of our common stock at the date of grant over the purchase price (which is typically zero). Expected volatility is calculated utilizing daily historical volatility over a period that equates to the expected life of the option. The risk-free interest rate was based on the United States Treasury interest rates whose term is consistent with the expected life (estimated period of time outstanding) of the stock options. Expected dividend yield is considered in the option pricing model and represents our current annualized expected per share dividends over the current trade price of our common stock. The expected life of the stock options granted is estimated using the historical exercise behavior of employees.
Income Taxes	Income Taxes Accounting for income taxes requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the tax and financial reporting bases of assets and liabilities and for loss and credit carryforwards. Valuation allowances are provided when recovery of deferred tax assets does not meet the more likely than not standard as defined in GAAP. We have elected to recognize interest and penalties associated with uncertain tax positions as a component of the Provision (benefit) for income taxes in the accompanying Consolidated Statements of Operations.
Income (Loss) Per Share-Basic and Diluted	Income (Loss) Per Share—Basic and Diluted
Allowance for Doubtful Accounts and Credit Memo Reserves	We maintain an allowance for doubtful accounts and credit memos for estimated losses resulting from the potential inability of our customers to make required payments and potential disputes regarding billing and service issues. When calculating the allowance, we consider our past loss experience, current and prior trends in our aged receivables and credit memo activity, current economic conditions and specific circumstances of individual receivable balances. If the financial condition of our customers were to significantly change, resulting in a significant improvement or impairment of their ability to make payments, an adjustment of the allowance may be required. We write-off uncollectible balances as circumstances warrant, generally, no later than one year past due.
Concentrations of Credit Risk	As per our risk management investment policy, we limit exposure to concentration of credit risk by limiting the amount invested in any one mutual fund to a maximum of 1% of the fund total assets or in any one financial institution to a maximum of $75,000
Fair Value Measurements	Fair Value Measurements Entities are permitted under GAAP to elect to measure certain financial instruments and certain other items at either fair value or cost. We have elected the cost measurement option. 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).
Redeemable Noncontrolling Interests	Redeemable Noncontrolling Interests Certain unaffiliated third parties own noncontrolling interests in our consolidated subsidiaries in Chile, India and South Africa. The underlying agreements between us and our noncontrolling interest shareholders for these subsidiaries contain provisions under which the noncontrolling interest shareholders can require us to purchase their respective interests in such subsidiaries at certain times and at a purchase price as stipulated in the underlying agreements (generally at fair value). These put options make these noncontrolling interests redeemable and, therefore, these noncontrolling interests are classified as temporary equity outside of stockholders' equity. Redeemable noncontrolling interests are reported at the higher of their redemption value or the noncontrolling interest holders' proportionate share of the underlying subsidiaries net carrying value. Increases or decreases in the redemption value of the noncontrolling interest are offset against Additional Paid-in Capital.
New Accounting Pronouncements	New Accounting Pronouncements Recently Adopted 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. In February 2016, the FASB issued ASU 2016-02. We adopted ASU 2016-02 on January 1, 2019 on a modified retrospective basis. See Note 2.m. for information regarding the impact of the adoption of ASU 2016-02 on our consolidated financial statements. Other As Yet Adopted Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses-Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”). ASU 2016-13 changes how entities will measure credit losses on most financial assets. The standard will eliminate the probable initial recognition of estimated losses and will provide a forward-looking expected credit loss model for accounts receivables, loans and other financial instruments. Adoption of the standard will be applied using a modified retrospective approach through a cumulative adjustment to retained earnings as of the effective date to align our credit loss methodology with the new standard. ASU 2016-13 is effective for us on January 1, 2020, with early adoption permitted. Under ASU 2016-13 we will be required to use a forward-looking expected credit loss model for accounts receivable, loans and other financial instruments. We do not expect ASU 2016-13 will have a material impact on our consolidated financial statements.
Changes in Presentation	We have historically classified our significant acquisition costs which represent operating expenditures associated with (1) the acquisition of Recall Holdings Limited ("Recall") that we completed on May 2, 2016 (the "Recall Transaction"), including: (i) advisory and professional fees to complete the Recall Transaction; (ii) costs associated with the Divestments (as defined in Note 13) required in connection with receipt of regulatory approvals (including transitional services); and (iii) costs to integrate Recall with our existing operations, including moving, severance, facility upgrade, REIT integration and system upgrade costs, as well as certain costs associated with our shared service center initiative for our finance, human resources and information technology functions; and (2) the advisory and professional fees to complete the IODC Transaction (as defined in Note 6) (collectively, "Significant Acquisition Costs"), as components of Selling, general and administrative expenses and Cost of sales. Beginning in 2019, we present Significant Acquisition Costs as its own line item within Operating Expenses in our Consolidated Statements of Operations. All prior periods have been conformed to this presentation. See Note 9 for Significant Acquisition Costs by segment.
Gains on Sale of Real Estate	Gains on Sale of Real Estate

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Property, Plant and Equipment at cost	Property, plant and equipment are stated at cost and depreciated using the straight-line method with the following useful lives (in years): Range Buildings and building improvements 5 to 40 Leasehold improvements 5 to 10 or life of the lease (whichever is shorter) Racking 1 to 20 or life of the lease (whichever is shorter) Warehouse equipment/vehicles 1 to 10 Furniture and fixtures 1 to 10 Computer hardware and software 2 to 5 Property, plant and equipment (including financing leases in the respective category), at cost, consist of the following: December 31, 2019 2018 Land $ 448,566 $ 400,980 Buildings and building improvements 3,029,309 2,991,307 Leasehold improvements 852,022 770,666 Racking 2,040,832 2,001,831 Warehouse equipment/vehicles 483,218 481,515 Furniture and fixtures 54,275 56,207 Computer hardware and software 689,261 680,283 Construction in progress 451,423 218,160 $ 8,048,906 $ 7,600,949
Schedule of carrying value of goodwill, net for each of the reporting units	The carrying value of goodwill, net for each of our reporting units described above as of December 31, 2019 is as follows: Carrying Value North America RIM(1) $ 2,715,550 Europe RIM(1) 572,482 Latin America RIM(1) 140,897 ANZ RIM(1) 274,913 Asia RIM(1) 239,059 Global Data Center(2) 424,568 Fine Arts(3) 37,533 Entertainment Services(3) 34,102 Technology Escrow Services(3) 46,105 Total $ 4,485,209 ______________________________________________________________________ (1) This reporting unit is included in our Global RIM (as defined in Note 9) Business segment. (2) This reporting unit comprises our Global Data Center Business segment. (3) This reporting unit is included in our Corporate and Other Business segment.
Schedule of changes in the carrying value of goodwill attributable to each reportable operating segment	The carrying value of goodwill, net for each of our reporting units described above as of December 31, 2018 is as follows: Carrying Value North American Records and Information Management(1) $ 2,251,795 North American Data Management(2) 493,491 Consumer Storage(3) — Fine Arts(3) 35,526 Entertainment Services(3) 34,233 Western Europe(4) 381,806 NEE and MEI(5) 169,780 Latin America(5) 136,099 ANZ SA(5) 300,204 Asia(5) 212,140 Global Data Center(6) 425,956 Total $ 4,441,030 _______________________________________________________________________________ (1) This reporting unit comprised our former North American Records and Information Management Business segment. (2) This reporting unit comprised our former North American Data Management Business segment. (3) This reporting unit was included in our Corporate and Other Business segment. (4) This reporting unit comprised our former Western European Business segment. (5) This reporting unit was included in our former Other International Business segment. The changes in the carrying value of goodwill attributable to each reportable operating segment for the years ended December 31, 2019 and 2018 is as follows: Global RIM Business Global Data Center Business Corporate and Other Business Total Goodwill balance, net of accumulated amortization, as of December 31, 2017 $ 3,964,114 $ — $ 106,153 $ 4,070,267 Deductible goodwill acquired during the year 3,251 — 6,644 9,895 Non-deductible goodwill acquired during the year 34,230 429,853 3,620 467,703 Goodwill allocated to IMFS Divestment (see Note 13) (1,202 ) — — (1,202 ) Fair value and other adjustments(1) 3,860 — 609 4,469 Currency effects (105,043 ) (3,897 ) (1,162 ) (110,102 ) Goodwill balance, net of accumulated amortization, as of December 31, 2018 3,899,210 425,956 115,864 4,441,030 Deductible goodwill acquired during the year 16,450 — — 16,450 Non-deductible goodwill acquired during the year 11,228 — 1,904 13,132 Fair value and other adjustments(2) 4,439 258 (417 ) 4,280 Currency effects 11,574 (1,646 ) 389 10,317 Goodwill balance, net of accumulated amortization, as of December 31, 2019 $ 3,942,901 $ 424,568 $ 117,740 $ 4,485,209 Accumulated Goodwill Impairment Balance as of December 31, 2018 $ 132,409 $ — $ 3,011 $ 135,420 Accumulated Goodwill Impairment Balance as of December 31, 2019 $ 132,409 $ — $ 3,011 $ 135,420 ___________________________________________________________________ (1) Total fair value and other adjustments primarily include net adjustments of $(2,717) primarily related to property, plant and equipment, customer relationship intangible assets and other liabilities and $7,186 of cash paid related to certain acquisitions completed in 2017. (2) Total fair value and other adjustments primarily include net adjustments of $4,942 primarily related to property, plant and equipment, customer relationship 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.
Components of amortizable intangible assets	The gross carrying amount and accumulated amortization of our finite-lived intangible assets as of December 31, 2019 and 2018 , respectively, are as follows: December 31, 2019 December 31, 2018 Gross Carrying Accumulated Net Carrying Gross Carrying Accumulated Net Carrying Assets: Customer relationship intangible assets $ 1,751,848 $ (544,721 ) $ 1,207,127 $ 1,718,919 $ (455,705 ) $ 1,263,214 Customer inducements 52,718 (29,397 ) 23,321 56,478 (34,181 ) 22,297 Data center lease-based intangible assets(1) 265,945 (103,210 ) 162,735 271,818 (50,807 ) 221,011 Third-party commissions asset(2) 31,708 (4,134 ) 27,574 30,071 (1,089 ) 28,982 $ 2,102,219 $ (681,462 ) $ 1,420,757 $ 2,077,286 $ (541,782 ) $ 1,535,504 Liabilities: Data center below-market leases $ 12,750 $ (3,937 ) $ 8,813 $ 12,318 $ (1,642 ) $ 10,676 _______________________________________________________________________________ (1) Includes Data Center In-Place Leases, Data Center Tenant Relationships and Data Center Above-Market Leases. (2) Third-party commissions asset is included in Other, a component of Other assets, net in the accompanying Consolidated Balance Sheets as of December 31, 2019 and 2018 . See Note 6 for additional information on the third-party commissions asset. December 31, 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) $ 19,893 $ (18,405 ) $ 1,488 $ 20,310 $ (14,798 ) $ 5,512
Schedule of amortization expenses	Amortization expense associated with finite-lived intangible assets, revenue reduction associated with the amortization of Permanent Withdrawal Fees and net revenue reduction associated with the amortization of Data Center Above-Market Leases and Data Center Below-Market Leases for the years ended December 31, 2019 , 2018 and 2017 are as follows: Year Ended December 31, 2019 2018 2017 Amortization expense included in depreciation and amortization associated with: Customer relationship and customer inducement intangible assets $ 117,972 $ 113,782 $ 109,563 Data center in-place leases and tenant relationships 46,696 43,061 — Third-party commissions asset and other finite-lived intangible assets 7,957 5,713 6,530 Revenue reduction associated with amortization of: Permanent withdrawal fees $ 9,993 $ 11,408 $ 11,253 Data center above-market leases and data center below-market leases 3,710 4,873 —
Estimated amortization expense for existing intangible assets for the next five succeeding fiscal years	Estimated amortization expense for existing finite-lived intangible assets (excluding deferred financing costs, as disclosed in Note 2.j. and Contract Fulfillment Costs, as defined and disclosed in Note 2.l.) is as follows: Estimated Amortization Included in Depreciation Revenue Reduction Associated with the Amortization of Permanent Withdrawal Fees Revenue Reduction (Increase) Associated with Amortization of Data Center Above-market leases and Below-market leases 2020 $ 160,865 $ 7,760 $ 872 2021 157,647 5,207 234 2022 127,148 3,200 273 2023 121,256 2,112 (470 ) 2024 116,253 1,125 (610 ) Thereafter 712,369 1,303 (3,112 )
Schedule of amortization of deferred financing costs	Estimated amortization expense for deferred financing costs, which are amortized as a component of interest expense, is as follows: Estimated Amortization of Deferred Financing Costs 2020 $ 17,132 2021 16,002 2022 14,888 2023 11,618 2024 8,424 Thereafter 18,901
Components of prepaid expenses	Accrued expenses, with items greater than 5% of total current liabilities are shown separately, and consist of the following: December 31, 2019 2018 Interest $ 97,987 $ 84,283 Incentive compensation 56,662 75,256 Sales tax and VAT payable 115,352 124,232 Dividend 186,021 181,986 Operating lease liabilities 223,249 — Other 282,481 315,024 Accrued expenses $ 961,752 $ 780,781
Schedule of amortization expense associated with commissions asset and Intake Costs	The Contract Fulfillment Costs as of December 31, 2019 and 2018 are as follows: December 31, 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) $ 41,224 $ (23,579 ) $ 17,645 $ 39,748 $ (24,504 ) $ 15,244 Commissions asset Other (within Other Assets, Net) 68,008 (27,178 ) 40,830 58,424 (34,637 ) 23,787 Amortization expense associated with the Intake Costs asset and capitalized commissions asset for the years ended December 31, 2019 and 2018 are as follows: Year Ended December 31, Description 2019 2018 Intake Costs asset $ 10,144 $ 10,380 Capitalized commissions asset 19,109 13,838
Contract with customer, future amortization expense	Estimated amortization expense for Contract Fulfillment Costs is as follows: Year Estimated Amortization 2020 $ 28,156 2021 20,448 2022 9,871
Schedule of deferred revenue liabilities	Deferred revenue liabilities are reflected as follows in our Consolidated Balance Sheets: December 31, Description Location in Balance Sheet 2019 2018 Deferred revenue - Current Deferred revenue $ 274,036 $ 264,823 Deferred revenue - Long-term Other Long-term Liabilities 36,029 26,401
Schedule of future minimum rental payments for operating leases	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 2020 $ 202,130 2021 135,911 2022 98,797 2023 80,079 2024 68,376 The estimated minimum future lease payments as of December 31, 2019 , are as follows: Year Operating Leases(1) Sublease Income Financing Leases(1) 2020 $ 339,469 $ (7,695 ) $ 62,271 2021 319,628 (5,282 ) 54,993 2022 295,981 (4,996 ) 44,886 2023 267,809 (4,885 ) 39,130 2024 237,604 (3,543 ) 31,849 Thereafter 1,454,918 (7,691 ) 277,890 Total minimum lease payments 2,915,409 $ (34,092 ) 511,019 Less amounts representing interest or imputed interest (963,474 ) (143,837 ) Present value of lease obligations $ 1,951,935 $ 367,182 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 December 31, 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 financing lease and financing obligations associated with build to suit lease transactions at December 31, 2018 .
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 December 31, 2019 and January 1, 2019 (date of adoption of ASU 2016-02) are as follows: Description Location in Balance Sheet December 31, 2019 January 1, 2019 (Date of Adoption of ASU 2016-02) Assets: Operating lease right-of-use assets(1) Operating lease right-of-use assets $ 1,869,101 $ 1,825,721 Financing lease right-of-use assets, net of accumulated depreciation(2) Property, Plant and Equipment, Net 327,215 361,078 Total $ 2,196,316 $ 2,186,799 Liabilities: Current Operating lease liabilities Accrued expenses and other current liabilities $ 223,249 $ 209,911 Financing lease liabilities Current portion of long-term debt 46,582 50,437 Total current lease liabilities 269,831 260,348 Long-term Operating lease liabilities Long-term Operating Lease Liabilities, net of current portion 1,728,686 1,685,771 Financing lease liabilities Long-term Debt, net of current portion 320,600 350,263 Total long-term lease liabilities 2,049,286 2,036,034 Total $ 2,319,117 $ 2,296,382 ______________________________________________________________ (1) At December 31, 2019 , these assets are comprised of approximately 99% real estate related assets (which include land, buildings and racking) and 1% non-real estate related assets (which include warehouse equipment, vehicles, furniture and fixtures and computer hardware and software). (2) At December 31, 2019 , these assets are comprised of approximately 69% real estate related assets and 31% non-real estate related assets.
Schedule of lease, cost	Supplemental cash flow information relating to our leases for the year ended December 31, 2019 is as follows: Cash paid for amounts included in measurement of lease liabilities: Year Ended December 31, 2019 Operating cash flows used in operating leases $ 338,059 Operating cash flows used in financing leases (interest) 21,031 Financing cash flows used in financing leases 58,033 Non-cash items: Operating lease modifications and reassessments $ 108,023 New operating leases (including acquisitions) 170,464 New financing leases, modifications and reassessments 32,742 Weighted average remaining lease terms and discount rates as of December 31, 2019 are as follows: Remaining Lease Term Operating leases 11.0 Years Financing leases 11.6 Years Discount Rate Operating leases 7.1 % Financing leases 5.7 % The components of the lease expense for the year ended December 31, 2019 are as follows: Description Location in Statement of Operations December 31, 2019 Operating lease cost(1) Cost of sales and Selling, general and administrative $ 459,619 Financing lease cost: Depreciation of financing lease right-of-use assets Depreciation and amortization $ 59,258 Interest expense for financing lease liabilities Interest Expense, Net 21,031 Total financing lease cost $ 80,289 ______________________________________________________________ (1) Of the $459,619 incurred for the year ended December 31, 2019 , $447,194 is included within Cost of sales and $12,425 is included within Selling, general and administrative expenses. Operating lease cost includes variable lease costs of $105,922 for the year ended December 31, 2019
Schedule of future minimum lease payments for capital leases	The estimated minimum future lease payments as of December 31, 2019 , are as follows: Year Operating Leases(1) Sublease Income Financing Leases(1) 2020 $ 339,469 $ (7,695 ) $ 62,271 2021 319,628 (5,282 ) 54,993 2022 295,981 (4,996 ) 44,886 2023 267,809 (4,885 ) 39,130 2024 237,604 (3,543 ) 31,849 Thereafter 1,454,918 (7,691 ) 277,890 Total minimum lease payments 2,915,409 $ (34,092 ) 511,019 Less amounts representing interest or imputed interest (963,474 ) (143,837 ) Present value of lease obligations $ 1,951,935 $ 367,182 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 December 31, 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 financing lease and financing obligations associated with build to suit lease transactions at December 31, 2018 .
Schedule of weighted average assumptions	The weighted average assumptions used for grants in the year ended December 31: Weighted Average Assumptions 2019 2018 2017 Expected volatility 24.3 % 25.4 % 25.7 % Risk-free interest rate 2.47 % 2.65 % 1.96 % Expected dividend yield 7 % 7 % 6 % Expected life 5.0 years 5.0 years 5.0 years
Summary of stock option activity	A summary of our stock options outstanding as of December 31, 2019 by vesting terms is as follows: December 31, 2019 Stock Options Outstanding % of Three-year vesting period (10 year contractual life) 4,691,321 97.0 % Five-year vesting period (10 year contractual life) 144,400 3.0 % 4,835,721 100.0 % A summary of stock option activity for the year ended December 31, 2019 is as follows: Options Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding at December 31, 2018 4,271,834 $ 34.78 Granted 920,706 35.71 Exercised (303,543 ) 23.86 Forfeited (23,984 ) 35.21 Expired (29,292 ) 34.78 Outstanding at December 31, 2019 4,835,721 $ 35.64 6.72 $ 3,005 Options exercisable at December 31, 2019 3,068,945 $ 35.80 5.81 $ 3,005 Options expected to vest 1,648,127 $ 35.34 8.47 $ —
Aggregate intrinsic value of stock options exercised	The aggregate intrinsic value of stock options exercised for the years ended December 31, 2019 , 2018 and 2017 is as follows: Year Ended December 31, 2019 2018 2017 Aggregate intrinsic value of stock options exercised $ 3,148 $ 2,181 $ 8,485
Summary of restricted stock and RSU activity	Cash dividends accrued and paid on RSUs for the years ended December 31, 2019 , 2018 and 2017 , are as follows: Year Ended December 31, 2019 2018 2017 Cash dividends accrued on RSUs $ 3,215 $ 2,899 $ 2,590 Cash dividends paid on RSUs 2,369 2,477 2,370 The fair value of RSUs vested during the years ended December 31, 2019 , 2018 and 2017 , are as follows: Year Ended December 31, 2019 2018 2017 Fair value of RSUs vested $ 21,191 $ 20,454 $ 19,825 A summary of RSU activity for the year ended December 31, 2019 is as follows: RSUs Weighted- Non-vested at December 31, 2018 1,196,566 $ 34.33 Granted 823,508 34.72 Vested (678,138 ) 34.06 Forfeited (138,337 ) 34.75 Non-vested at December 31, 2019 1,203,599 $ 34.71
Schedule of performance units	Cash dividends accrued and paid on PUs for the years ended December 31, 2019 , 2018 and 2017 , are as follows: Year Ended December 31, 2019 2018 2017 Cash dividends accrued on PUs $ 2,260 $ 1,804 $ 1,290 Cash dividends paid on PUs 1,162 644 205 The fair value of earned PUs that vested during the years ended December 31, 2019 , 2018 and 2017 , is as follows: Year Ended December 31, 2019 2018 2017 Fair value of earned PUs that vested $ 6,503 $ 3,117 $ 1,242
Summary of performance unit (PU) activity	A summary of PU activity for the year ended December 31, 2019 is as follows: Original PU Adjustment(1) Total Weighted- Non-vested at December 31, 2018 967,049 (299,948 ) 667,101 $ 36.54 Granted 380,856 — 380,856 36.07 Vested (206,279 ) — (206,279 ) 37.97 Forfeited/Performance or Market Conditions Not Achieved (27,935 ) (14,850 ) (42,785 ) 26.50 Non-vested at December 31, 2019 1,113,691 (314,798 ) 798,893 $ 36.56 _______________________________________________________________________________ (1) Represents an increase or decrease in the number of original PUs awarded based on either the final performance criteria or market condition achievement at the end of the performance period of such PUs or a change in estimated awards based on the forecasted performance against the predefined targets.
Calculation of basic and diluted net income (loss) per share attributable to the entity	The calculation of basic and diluted income (loss) per share for the years ended December 31, 2019 , 2018 and 2017 is as follows: Year Ended December 31, 2019 2018 2017 Income (loss) from continuing operations $ 268,211 $ 367,558 $ 178,015 Less: Net income (loss) attributable to noncontrolling interests 938 1,198 1,611 Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation) 267,273 366,360 176,404 Income (loss) from discontinued operations, net of tax 104 (12,427 ) (6,291 ) Net income (loss) attributable to Iron Mountain Incorporated $ 267,377 $ 353,933 $ 170,113 Weighted-average shares—basic 286,971,000 285,913,000 265,898,000 Effect of dilutive potential stock options 145,509 234,558 431,071 Effect of dilutive potential RSUs and PUs 570,435 505,030 509,235 Effect of Over-Allotment Option(1) — — 6,278 Weighted-average shares—diluted 287,686,944 286,652,588 266,844,584 Earnings (losses) per share—basic: Income (loss) from continuing operations $ 0.93 $ 1.28 $ 0.66 (Loss) income from discontinued operations, net of tax — (0.04 ) (0.02 ) Net income (loss) attributable to Iron Mountain Incorporated(2) $ 0.93 $ 1.24 $ 0.64 Earnings (losses) per share—diluted: Income (loss) from continuing operations $ 0.93 $ 1.28 $ 0.66 (Loss) income from discontinued operations, net of tax — (0.04 ) (0.02 ) Net income (loss) attributable to Iron Mountain Incorporated(2) $ 0.93 $ 1.23 $ 0.64 Antidilutive stock options, RSUs and PUs, excluded from the calculation 4,475,745 3,258,078 2,326,344 ___________________________________________________________________ (1) See Note 12. (2) Columns may not foot due to rounding.
Roll forward of allowance for doubtful accounts and credit memo reserves	Rollforward of allowance for doubtful accounts and credit memo reserves is as follows: Year Ended December 31, Balance at Credit Memos Allowance for Deductions and Other(1) Balance at 2019 $ 43,584 $ 51,846 $ 19,389 $ (71,963 ) $ 42,856 2018 46,648 36,329 18,625 (58,018 ) 43,584 2017 44,290 38,966 14,826 (51,434 ) 46,648 _______________________________________________________________________________ (1) Primarily consists of the issuance of credit memos, the write-off of accounts receivable and the impact associated with currency translation adjustments.
Assets and liabilities carried at fair value measured on a recurring basis	Fair Value Measurements at December 31, 2019 Using Description Total Carrying Quoted prices Significant other Significant Money Market Funds(1) $ 13,653 $ — $ 13,653 $ — Trading Securities 10,732 10,168 (2) 564 (3) — Derivative Liabilities(4) 9,756 — 9,756 — Fair Value Measurements at Description Total Carrying Quoted prices Significant other Significant 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 other than quoted market prices that are observable. (4) Derivative assets and liabilities include (i) interest rate swap agreements, including forward-starting interest rate swap agreements, to limit our exposure to changes in interest rates on a portion of our floating rate indebtedness, (ii) cross-currency swap agreements to hedge the variability of exchange rates impacts between the United States dollar and the Euro and certain of our Euro denominated subsidiaries and (iii) short-term (six months or less) foreign exchange currency forward contracts that we have entered into to hedge certain of our foreign exchange intercompany exposures. Our derivative financial instruments are measured using industry standard valuation models using market-based observable inputs, including interest rate curves, forward and spot prices for currencies and implied volatilities. Credit risk is also factored into the determination of the fair value of our derivative financial instruments. See Note 3 for additional information on our derivative financial instruments.
Schedule of changes in accumulated other comprehensive items, net	The changes in accumulated other comprehensive items, net for the years ended December 31, 2019 , 2018 and 2017 are as follows: Foreign Currency Change in Fair Value of Derivative Instruments Total Balance as of December 31, 2016 $ (212,573 ) $ — $ (212,573 ) Other comprehensive (loss) income: Foreign currency translation adjustment(1) 108,584 — 108,584 Total other comprehensive (loss) income 108,584 — 108,584 Balance as of December 31, 2017 (103,989 ) — (103,989 ) Other comprehensive (loss) income: Foreign currency translation adjustment (160,702 ) — (160,702 ) Change in fair value of derivative instruments — (973 ) (973 ) Total other comprehensive (loss) income (160,702 ) (973 ) (161,675 ) Balance as of December 31, 2018 (264,691 ) (973 ) (265,664 ) Other comprehensive (loss) income: Foreign currency translation adjustment 11,866 — 11,866 Change in fair value of derivative instruments — (8,783 ) (8,783 ) Total other comprehensive (loss) income 11,866 (8,783 ) 3,083 Balance as of December 31, 2019 $ (252,825 ) $ (9,756 ) $ (262,581 ) ______________________________________________________________ (1) During the year ended December 31, 2017, approximately $29,100 of cumulative translation adjustment associated with our businesses in Russia and Ukraine was reclassified from accumulated other comprehensive items, net and was included in the gain on sale associated with the Russia and Ukraine Divestment (see Note 13).
Other expense (income), net	Other expense (income), net for the years ended December 31, 2019 , 2018 and 2017 consists of the following: Year Ended December 31, 2019 2018 2017 Foreign currency transaction losses (gains), net(1) $ 24,852 $ (15,567 ) $ 43,248 Debt extinguishment expense, net — — 78,368 Other, net(2) 9,046 3,875 (42,187 ) Other Expense (Income), Net $ 33,898 $ (11,692 ) $ 79,429 _______________________________________________________________________________ (1) 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, includes gains or losses primarily related to (i) borrowings in certain foreign currencies under our Revolving Credit Facility and our Former Revolving Credit Facility (each as defined in Note 4), (ii) our Euro Notes (as defined in Note 4), (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). (2) Other, net for the year ended December 31, 2017 includes a gain of $38,869 associated with the Russia and Ukraine Divestment (as defined in Note 13).
Schedule of immaterial restatement	The following table sets forth the effect of the (i) change in presentation of Significant Acquisition Costs and (ii) correction in presentation of gain on sale of real estate to certain line items of our Consolidated Statements of Operations for December 31, 2018 and 2017. The effect of these items did not impact Income (Loss) from Continuing Operations or Net Income (Loss). Year Ended December 31, 2018 2017 Significant Acquisition Costs Gain on Sale of Real Estate Total Significant Acquisition Costs Gain on Sale of Real Estate Total Cost of sales (excluding depreciation and amortization) $ (7,628 ) $ — $ (7,628 ) $ (20,493 ) $ — $ (20,493 ) Selling, general and administrative $ (43,037 ) $ — $ (43,037 ) $ (64,408 ) $ — $ (64,408 ) Significant Acquisition Costs $ 50,665 $ — $ 50,665 $ 84,901 $ — $ 84,901 (Gain) Loss on disposal/write-down of property, plant and equipment, net $ — $ (63,804 ) $ (63,804 ) $ — $ (1,565 ) $ (1,565 ) Total Operating Expenses $ — $ (63,804 ) $ (63,804 ) $ — $ (1,565 ) $ (1,565 ) Operating Income (Loss) $ — $ 63,804 $ 63,804 $ — $ 1,565 $ 1,565 Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes $ — $ 63,804 $ 63,804 $ — $ 1,565 $ 1,565 Provision (Benefit) for Income Taxes $ — $ 8,476 $ 8,476 $ — $ — $ — Gain on Sale of Real Estate, Net of tax $ — $ 55,328 $ 55,328 $ — $ 1,565 $ 1,565 Year Ended December 31, 2018 2017 Selling, general and administrative $ 11,045 $ 16,623 Total Operating Expenses $ 11,045 $ 16,623 Operating Income (Loss) $ (11,045 ) $ (16,623 ) Interest Expense, Net $ 359 $ 70 Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes $ (11,404 ) $ (16,693 ) Provision (Benefit) for Income Taxes $ (1,986 ) $ (2,985 ) Income (Loss) from Continuing Operations $ (9,418 ) $ (13,708 ) Net Income (Loss) $ (9,418 ) $ (13,708 ) Net Income (Loss) Attributable to Iron Mountain Incorporated $ (9,418 ) $ (13,708 ) Earnings (Losses) per Share - Basic: Income (Loss) from Continuing Operations $ (0.03 ) $ (0.05 ) Net Income (Loss) Attributable to Iron Mountain Incorporated $ (0.03 ) $ (0.05 ) Earnings (Losses) per Share - Diluted: Income (Loss) from Continuing Operations $ (0.03 ) $ (0.05 ) Net Income (Loss) Attributable to Iron Mountain Incorporated $ (0.03 ) $ (0.05 ) 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 )

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss)	As a result, we recorded the following foreign exchange gains (losses) related to the change in fair value of such debt due to the currency translation adjustments, which is a component of Accumulated other comprehensive items, net: Year Ended December 31, 2019 2018 2017 Foreign exchange gains (losses) $ 6,003 $ 11,070 $ (15,015 )
Schedule of Net Cash (Receipts) Payments Included in Cash From Operacting Activities Related to Settlements	Net cash payments (receipts) included in cash from operating activities related to settlements associated with foreign currency forward contracts for the years ended December 31, 2019 , 2018 and 2017 , are as follows: Year Ended December 31, 2019 2018 2017 Net payments (receipts) $ 737 $ 5,797 $ (9,073 )
Schedule of (Gains) Losses For Derivative Instruments	Losses (gains) for our derivative instruments for the years ended December 31, 2019 , 2018 and 2017 are as follows: Amount of Loss (Gain) Recognized in Income on Derivatives December 31, Derivatives Not Designated as Hedging Instruments Location of Loss (Gain) Recognized in Income on Derivative 2019 2018 2017 Foreign exchange contracts Other expense (income), net $ 737 $ 4,954 $ (8,292 )

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Schedule of Carrying Amount and Fair Value of Long-term Debt Instruments	Long-term debt is as follows: December 31, 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) $ 348,808 $ (12,053 ) $ 336,755 $ 348,808 $ 793,832 $ (14,117 ) $ 779,715 $ 793,832 Term Loan A(1) 228,125 — 228,125 228,125 240,625 — 240,625 240,625 Term Loan B(1)(2) 686,395 (7,493 ) 678,902 686,890 693,169 (8,742 ) 684,427 660,013 Australian Dollar Term Loan (the "AUD Term Loan")(3)(4) 226,924 (2,313 ) 224,611 228,156 233,955 (3,084 ) 230,871 235,645 UK Bilateral Revolving Credit Facility (the "UK Bilateral Facility")(4) 184,601 (1,801 ) 182,800 184,601 178,299 (2,357 ) 175,942 178,299 4 3 / 8 % Senior Notes due 2021 (the "4 3 / 8 % Notes")(5)(6)(7) 500,000 (2,436 ) 497,564 503,450 500,000 (4,155 ) 495,845 488,750 6% Senior Notes due 2023 (the "6% Notes due 2023")(5)(6) 600,000 (4,027 ) 595,973 613,500 600,000 (5,126 ) 594,874 606,000 5 3 / 8 % CAD Senior Notes due 2023 (the "CAD Notes due 2023")(5)(7)(8) 192,058 (2,071 ) 189,987 199,380 183,403 (2,506 ) 180,897 186,154 5 3 / 4 % Senior Subordinated Notes due 2024 (the "5 3 / 4 % Notes")(5)(6) 1,000,000 (6,409 ) 993,591 1,010,625 1,000,000 (7,782 ) 992,218 940,000 3% Euro Senior Notes due 2025 (the "Euro Notes")(5)(6)(7) 336,468 (3,462 ) 333,006 345,660 343,347 (4,098 ) 339,249 321,029 3 7 / 8 % GBP Senior Notes due 2025 (the "GBP Notes due 2025")(5)(7)(9) 527,432 (5,809 ) 521,623 539,892 509,425 (6,573 ) 502,852 453,811 5 3 / 8 % Senior Notes due 2026 (the "5 3 / 8 % Notes")(5)(7)(10) 250,000 (2,756 ) 247,244 261,641 250,000 (3,185 ) 246,815 224,375 4 7 / 8 % Senior Notes due 2027 (the "4 7 / 8 % Notes due 2027")(5)(6)(7) 1,000,000 (11,020 ) 988,980 1,029,475 1,000,000 (12,442 ) 987,558 855,000 5 1 / 4 % Senior Notes due 2028 (the "5 1 / 4 % Notes")(5)(6)(7) 825,000 (9,742 ) 815,258 859,598 825,000 (10,923 ) 814,077 713,625 4 7 / 8 % Senior Notes due 2029 (the "4 7 / 8 % Notes due 2029")(5)(6)(7) 1,000,000 (14,104 ) 985,896 1,015,640 — — — — Real Estate Mortgages, Financing Lease Liabilities and Other(11) 523,671 (406 ) 523,265 523,671 606,702 (171 ) 606,531 606,702 Accounts Receivable Securitization Program(12) 272,062 (81 ) 271,981 272,062 221,673 (218 ) 221,455 221,673 Mortgage Securitization Program(13) 50,000 (982 ) 49,018 50,000 50,000 (1,128 ) 48,872 50,000 Total Long-term Debt 8,751,544 (86,965 ) 8,664,579 8,229,430 (86,607 ) 8,142,823 Less Current Portion (389,013 ) — (389,013 ) (126,406 ) — (126,406 ) Long-term Debt, Net of Current Portion $ 8,362,531 $ (86,965 ) $ 8,275,566 $ 8,103,024 $ (86,607 ) $ 8,016,417 ______________________________________________________________ (1) The capital stock or other equity interests of most of our United States subsidiaries, and up to 66% of the capital stock or other equity interests of most of our first-tier foreign subsidiaries, are pledged to secure these debt instruments, together with all intercompany obligations (including promissory notes) of subsidiaries owed to us or to one of our United States subsidiary guarantors. In addition, Iron Mountain Canada Operations ULC ("Canada Company") has pledged 66% of the capital stock of its subsidiaries, and all intercompany obligations (including promissory notes) owed to or held by it, to secure the Canadian dollar subfacility under the Revolving Credit Facility. The fair value (Level 3 of fair value hierarchy described at Note 2.s.) of these debt instruments approximates the carrying value (as borrowings under these debt instruments are based on current variable market interest rates (plus a margin that is subject to change based on our consolidated leverage ratio), as of December 31, 2019 and 2018 . (2) The amount of debt for the Term Loan B (as defined below) reflects an unamortized original issue discount of $1,355 and $1,581 as of December 31, 2019 and 2018 , respectively. (3) The amount of debt for the AUD Term Loan reflects an unamortized original issue discount of $ 1,232 and $1,690 as of December 31, 2019 and 2018 , respectively. (4) The fair value (Level 3 of fair value hierarchy described at Note 2.s.) of this debt instrument approximates the carrying value as borrowings under this debt instrument are based on a current variable market interest rate. (5) The fair values (Level 1 of fair value hierarchy described at Note 2.s.) of these debt instruments are based on quoted market prices for these notes on December 31, 2019 and 2018 , respectively. (6) Collectively, the "Parent Notes". IMI is the direct obligor on the Parent Notes, which are fully and unconditionally guaranteed, on a senior or senior subordinated basis, as the case may be, by IMI's direct and indirect 100% owned United States subsidiaries that represent the substantial majority of our United States operations (the "Guarantors"). These guarantees are joint and several obligations of the Guarantors. The remainder of our subsidiaries do not guarantee the Parent Notes. See Note 5. (7) The 4 3 / 8 % Notes, the CAD Notes due 2023, the Euro Notes, the GBP Notes due 2025, the 5 3 / 8 % Notes, the 4 7 / 8 % Notes due 2027, the 5 1 / 4 % Notes and the 4 7 / 8 % Notes due 2029 (collectively, the "Unregistered Notes") have not been registered under the Securities Act of 1933, as amended (the “Securities Act”), or under the securities laws of any other jurisdiction. Unless they are registered, the Unregistered Notes may be offered only in transactions that are exempt from registration under the Securities Act or the securities laws of any other jurisdiction. (8) Canada Company is the direct obligor on the CAD Notes due 2023, which are fully and unconditionally guaranteed, on a senior basis, by IMI and the Guarantors. These guarantees are joint and several obligations of IMI and the Guarantors. See Note 5. (9) Iron Mountain (UK) PLC ("IM UK") is the direct obligor on the GBP Notes due 2025, which are fully and unconditionally guaranteed, on a senior basis, by IMI and the Guarantors. These guarantees are joint and several obligations of IMI and the Guarantors. See Note 5. (10) Iron Mountain US Holdings, Inc. ("IM US Holdings"), one of the Guarantors, is the direct obligor on the 5 3 / 8 % Notes, which are fully and unconditionally guaranteed, on a senior basis, by IMI and the other Guarantors. These guarantees are joint and several obligations of IMI and such Guarantors. See Note 5. (11) Includes (i) real estate mortgages of $27,036 and $18,576 as of December 31, 2019 and 2018 , respectively, which bear interest at approximately 3.9% as of December 31, 2019 and 4.1% as of December 31, 2018 and are payable in various installments through 2024, (ii) financing lease liabilities of $367,182 and $447,173 as of December 31, 2019 and 2018 , respectively, which bear a weighted average interest rate of 5.7% at December 31, 2019 and 2018 and (iii) other notes and other obligations, which were assumed by us as a result of certain acquisitions, of $129,453 and $140,953 as of December 31, 2019 and 2018 , respectively, and bear a weighted average interest rate of 10.8% at December 31, 2019 and 11.1% at December 31, 2018 , respectively. We believe the fair value (Level 3 of fair value hierarchy described at Note 2.s.) of this debt approximates its carrying value. (12) The Accounts Receivable Securitization Special Purpose Subsidiaries are the obligors under this program. We believe the fair value (Level 3 of fair value hierarchy described at Note 2.s.) of this debt approximates its carrying value. (13) The Mortgage Securitization Special Purpose Subsidiary is the obligor under this program. We believe the fair value (Level 3 of fair value hierarchy described at Note 2.s.) of this debt approximates its carrying value.
Schedule of Redemption Dates and Prices of the Senior or Senior Subordinated Notes	The following table presents the various redemption dates and prices of the senior or senior subordinated notes. The redemption dates reflect the date at or after which the notes may be redeemed at our option at a premium redemption price. After these dates, the notes may be redeemed at 100% of face value: Redemption Date 4 3 / 8 % Notes June 1, 6% Notes CAD Notes 5 3 / 4 % Notes Euro Notes GBP Notes 5 3 / 8 % Notes June 1, 4 7 / 8 % Notes due 2027 5 1 / 4 % Notes 4 7 / 8 % Notes due 2029 2019 101.094 % (1) 102.000 % (1) 104.031 % (1) 100.958 % (1) — — — — — — 2020 100.000 % 101.000 % 102.688 % 100.000 % 101.500 % (1) 101.938 % (1) — — — — 2021 100.000 % 100.000 % 101.344 % 100.000 % 100.750 % 100.969 % 102.688 % (1) — — — 2022 — 100.000 % 100.000 % 100.000 % 100.000 % 100.000 % 101.792 % 102.438 % (1) 102.625 % (1) — 2023 — 100.000 % 100.000 % 100.000 % 100.000 % 100.000 % 100.896 % 101.625 % 101.750 % — 2024 — — — 100.000 % 100.000 % 100.000 % 100.000 % 100.813 % 100.875 % 102.438 % (1) 2025 — — — — 100.000 % 100.000 % 100.000 % 100.000 % 100.000 % 101.609 % 2026 — — — — — — 100.000 % 100.000 % 100.000 % 100.814 % 2027 — — — — — — — 100.000 % 100.000 % 100.000 % 2028 — — — — — — — — 100.000 % 100.000 % 2029 — — — — — — — — — 100.000 % _______________________________________________________________________________ (1) Prior to this date, the relevant notes are redeemable, at our option, in whole or in part, at a specified redemption price or make-whole price, as the case may be.
Schedule of Net Cash Position in Cash Pool Agreements	The approximate amount of the net cash position, gross position and outstanding debit balances for the QRS Cash Pool and TRS Cash Pool as of December 31, 2019 and 2018 were as follows: December 31, 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 $ 372,100 $ (369,000 ) $ 3,100 $ 300,800 $ (298,800 ) $ 2,000 TRS Cash Pool 319,800 (301,300 ) 18,500 281,500 (279,300 ) 2,200
Schedule of Leverage and Fixed Charge Ratios	Our leverage and fixed charge coverage ratios under the Credit Agreement as of December 31, 2019 and 2018 , as well as our leverage ratio under our indentures as of December 31, 2019 and 2018 are as follows: December 31, 2019 December 31, 2018 Maximum/Minimum Allowable Net total lease adjusted leverage ratio 5.7 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) 5.9 5.8 Maximum allowable of 6.5-7.0(1) Fixed charge coverage ratio 2.2 2.2 Minimum allowable of 1.5 ______________________________________________________________ (1) The maximum allowable leverage ratio under our indentures for the GBP Notes due 2025, the 4 7 / 8 % Notes due 2027, the 5 1 / 4 % Notes and the 4 7 / 8 % Notes due 2029 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.
Schedule of Maturities of Long-term Debt	Maturities of long-term debt (gross of discounts) are as follows: Year Amount 2020 $ 389,013 2021 608,584 2022 487,601 2023 1,384,684 2024 1,036,688 Thereafter 4,847,561 8,754,131 Net Discounts (2,587 ) Net Deferred Financing Costs (86,965 ) Total Long-term Debt (including current portion) $ 8,664,579

Selected Consolidated Financi_2

Selected Consolidated Financial Statements of Parent, Guarantors, and Non-Guarantors (Tables)	12 Months Ended
	Dec. 31, 2019
Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors
Schedule of Selected Consolidated Balance Sheets of Parent, Guarantors and Non-Guarantors	CONSOLIDATED BALANCE SHEETS December 31, 2019 Parent Guarantors Non- Guarantors Eliminations Consolidated ASSETS Current Assets: Cash and cash equivalents(1) $ 105 $ 206,297 $ 163,858 $ (176,705 ) $ 193,555 Accounts receivable — 45,608 805,093 — 850,701 Intercompany receivable — 658,580 — (658,580 ) — Prepaid expenses and other — 104,164 87,948 (29 ) 192,083 Total Current Assets 105 1,014,649 1,056,899 (835,314 ) 1,236,339 Property, Plant and Equipment, Net 597 3,051,426 1,571,014 — 4,623,037 Other Assets, Net: Long-term notes receivable from affiliates and intercompany receivable 5,347,774 — — (5,347,774 ) — Investment in subsidiaries 1,966,978 1,063,178 — (3,030,156 ) — Goodwill — 2,855,424 1,629,785 — 4,485,209 Operating lease right-of-use assets — 986,362 882,739 — 1,869,101 Other — 911,803 691,327 — 1,603,130 Total Other Assets, Net 7,314,752 5,816,767 3,203,851 (8,377,930 ) 7,957,440 Total Assets $ 7,315,454 $ 9,882,842 $ 5,831,764 $ (9,213,244 ) $ 13,816,816 LIABILITIES AND EQUITY Intercompany Payable $ 338,794 $ — $ 319,786 $ (658,580 ) $ — Debit Balances Under Cash Pool — — 176,705 (176,705 ) — Current Portion of Long-term Debt — 51,868 337,174 (29 ) 389,013 Total Other Current Liabilities (includes current portion of operating lease liabilities) 292,673 704,109 563,714 — 1,560,496 Long-term Debt, Net of Current Portion 5,210,269 1,482,571 1,582,726 — 8,275,566 Long-Term Operating Lease Liabilities, Net of Current Portion — 915,840 812,846 — 1,728,686 Long-term Notes Payable to Affiliates and Intercompany Payable — 5,347,774 — (5,347,774 ) — Other Long-term Liabilities 9,756 62,525 258,865 — 331,146 Commitments and Contingencies (see Note 10) Redeemable Noncontrolling Interests (see Note 2.v.) — — 67,682 — 67,682 Total Iron Mountain Incorporated Stockholders' Equity 1,463,962 1,318,155 1,712,001 (3,030,156 ) 1,463,962 Noncontrolling Interests — — 265 — 265 Total Equity 1,463,962 1,318,155 1,712,266 (3,030,156 ) 1,464,227 Total Liabilities and Equity $ 7,315,454 $ 9,882,842 $ 5,831,764 $ (9,213,244 ) $ 13,816,816 ______________________________________________________________ (1) Included within Cash and Cash Equivalents at December 31, 2019 is approximately $198,300 and $0 of cash on deposit associated with our Cash Pools for the Guarantors and Non-Guarantors, respectively. See Note 4 for more information on our Cash Pools. CONSOLIDATED BALANCE SHEETS (Continued) December 31, 2018 Parent Guarantors Non- Guarantors 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 10) Redeemable Noncontrolling Interests (see Note 2.v.) — — 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
Schedule of Selected Consolidated Statements of Operations of Parent, Guarantors and Non-Guarantors	CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) Year Ended December 31, 2019 Parent Guarantors Non- Guarantors Eliminations Consolidated Revenues: Storage rental $ — $ 1,654,359 $ 1,026,728 $ — $ 2,681,087 Service — 978,227 603,270 — 1,581,497 Intercompany revenues — 4,668 20,233 (24,901 ) — Total Revenues — 2,637,254 1,650,231 (24,901 ) 4,262,584 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 1,048,514 784,801 — 1,833,315 Intercompany cost of sales — 20,233 4,668 (24,901 ) — Selling, general and administrative 444 679,964 311,256 — 991,664 Depreciation and amortization 91 410,524 247,586 — 658,201 Significant Acquisition Costs — 7,055 6,238 — 13,293 Restructuring Charges — 32,218 16,379 — 48,597 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (26,472 ) (37,352 ) — (63,824 ) Total Operating Expenses 535 2,172,036 1,333,576 (24,901 ) 3,481,246 Operating (Loss) Income (535 ) 465,218 316,655 — 781,338 Interest Expense (Income), Net 213,149 18,923 187,226 — 419,298 Other Expense (Income), Net 59 19,271 14,568 — 33,898 (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (213,743 ) 427,024 114,861 — 328,142 Provision (Benefit) for Income Taxes — 6,698 53,233 — 59,931 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (481,120 ) (64,490 ) — 545,610 — Income (Loss) from Continuing Operations 267,377 484,816 61,628 (545,610 ) 268,211 Income (Loss) from Discontinued Operations, Net of Tax — 120 (16 ) — 104 Net Income (Loss) 267,377 484,936 61,612 (545,610 ) 268,315 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 938 — 938 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 267,377 $ 484,936 $ 60,674 $ (545,610 ) $ 267,377 Net Income (Loss) $ 267,377 $ 484,936 $ 61,612 $ (545,610 ) $ 268,315 Other Comprehensive Income (Loss): Foreign Currency Translation Adjustment 6,003 — 5,991 — 11,994 Change in Fair Value of Derivative Instruments (8,783 ) — — — (8,783 ) Equity in Other Comprehensive (Loss) Income of Subsidiaries 5,863 5,714 — (11,577 ) — Total Other Comprehensive Income (Loss) 3,083 5,714 5,991 (11,577 ) 3,211 Comprehensive Income (Loss) 270,460 490,650 67,603 (557,187 ) 271,526 Comprehensive Income (Loss) Attributable to Noncontrolling Interests — — 1,066 — 1,066 Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 270,460 $ 490,650 $ 66,537 $ (557,187 ) $ 270,460 CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued) Year Ended December 31, 2018 Parent Guarantors Non- Guarantors Eliminations Consolidated Revenues: Storage rental $ — $ 1,606,346 $ 1,016,109 $ — $ 2,622,455 Service — 974,213 629,093 — 1,603,306 Intercompany revenues — 4,759 18,439 (23,198 ) — Total Revenues — 2,585,318 1,663,641 (23,198 ) 4,225,761 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 1,009,890 784,064 — 1,793,954 Intercompany cost of sales — 18,439 4,759 (23,198 ) — Selling, general and administrative (288 ) 679,740 327,531 — 1,006,983 Depreciation and amortization 122 404,574 234,818 — 639,514 Significant Acquisition Costs — 35,607 15,058 — 50,665 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (2,841 ) (70,781 ) — (73,622 ) Total Operating Expenses (166 ) 2,145,409 1,295,449 (23,198 ) 3,417,494 Operating Income (Loss) 166 439,909 368,192 — 808,267 Interest Expense (Income), Net 199,955 6,392 203,301 — 409,648 Other Expense (Income), Net 2,328 17,158 (31,178 ) — (11,692 ) (Loss) Income from Continuing Operations Before (Benefit) Provision for Income Taxes (202,117 ) 416,359 196,069 — 410,311 (Benefit) Provision for Income Taxes — (1,006 ) 43,759 — 42,753 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (556,050 ) (147,575 ) — 703,625 — Income (Loss) from Continuing Operations 353,933 564,940 152,310 (703,625 ) 367,558 (Loss) Income from Discontinued Operations, Net of Tax — (12,283 ) (144 ) — (12,427 ) Net Income (Loss) 353,933 552,657 152,166 (703,625 ) 355,131 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 1,198 — 1,198 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 353,933 $ 552,657 $ 150,968 $ (703,625 ) $ 353,933 Net Income (Loss) $ 353,933 $ 552,657 $ 152,166 $ (703,625 ) $ 355,131 Other Comprehensive (Loss) Income: Foreign Currency Translation Adjustment 11,070 — (175,177 ) — (164,107 ) Change in Fair Value of Derivative Instrument (973 ) — — — (973 ) Equity in Other Comprehensive (Loss) Income of Subsidiaries (171,772 ) (139,971 ) — 311,743 — Total Other Comprehensive (Loss) Income (161,675 ) (139,971 ) (175,177 ) 311,743 (165,080 ) Comprehensive Income (Loss) 192,258 412,686 (23,011 ) (391,882 ) 190,051 Comprehensive (Loss) Income Attributable to Noncontrolling Interests — — (2,207 ) — (2,207 ) Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 192,258 $ 412,686 $ (20,804 ) $ (391,882 ) $ 192,258 CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Continued) Year Ended December 31, 2017 Parent Guarantors Non- Guarantors Eliminations Consolidated Revenues: Storage rental $ — $ 1,443,219 $ 934,338 $ — $ 2,377,557 Service — 866,318 601,703 — 1,468,021 Intercompany revenues — 4,577 24,613 (29,190 ) — Total Revenues — 2,314,114 1,560,654 (29,190 ) 3,845,578 Operating Expenses: Cost of sales (excluding depreciation and amortization) — 922,008 742,817 — 1,664,825 Intercompany cost of sales — 24,613 4,577 (29,190 ) — Selling, general and administrative 161 613,350 323,669 — 937,180 Depreciation and amortization 167 310,962 211,247 — 522,376 Significant Acquisition Costs — 52,621 32,280 — 84,901 Intangible impairments — 3,011 — — 3,011 (Gain) Loss on disposal/write-down of property, plant and equipment, net — (1,001 ) 235 — (766 ) Total Operating Expenses 328 1,925,564 1,314,825 (29,190 ) 3,211,527 Operating (Loss) Income (328 ) 388,550 245,829 — 634,051 Interest Expense (Income), Net 163,541 7,606 182,498 — 353,645 Other Expense (Income), Net 47,176 9,178 23,075 — 79,429 (Loss) Income from Continuing Operations Before Provision (Benefit) for Income Taxes (211,045 ) 371,766 40,256 — 200,977 Provision (Benefit) for Income Taxes — 3,988 18,974 — 22,962 Equity in the (Earnings) Losses of Subsidiaries, Net of Tax (381,158 ) (11,677 ) — 392,835 — Income (Loss) from Continuing Operations 170,113 379,455 21,282 (392,835 ) 178,015 (Loss) Income from Discontinued Operations, Net of Tax — (4,370 ) (1,921 ) — (6,291 ) Net Income (Loss) 170,113 375,085 19,361 (392,835 ) 171,724 Less: Net Income (Loss) Attributable to Noncontrolling Interests — — 1,611 — 1,611 Net Income (Loss) Attributable to Iron Mountain Incorporated $ 170,113 $ 375,085 $ 17,750 $ (392,835 ) $ 170,113 Net Income (Loss) $ 170,113 $ 375,085 $ 19,361 $ (392,835 ) $ 171,724 Other Comprehensive Income (Loss): Foreign Currency Translation Adjustment (15,015 ) — 123,579 — 108,564 Equity in Other Comprehensive Income (Loss) of Subsidiaries 123,599 82,127 — (205,726 ) — Total Other Comprehensive Income (Loss) 108,584 82,127 123,579 (205,726 ) 108,564 Comprehensive Income (Loss) 278,697 457,212 142,940 (598,561 ) 280,288 Comprehensive Income (Loss) Attributable to Noncontrolling Interests — — 1,591 — 1,591 Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated $ 278,697 $ 457,212 $ 141,349 $ (598,561 ) $ 278,697
Schedule of Selected Consolidated Statements of Cash Flows of Parent, Guarantors and Non-Guarantors	CONSOLIDATED STATEMENTS OF CASH FLOWS Year Ended December 31, 2019 Parent Guarantors Non- Guarantors Eliminations Consolidated Cash Flows from Operating Activities: Cash Flows from Operating Activities-Continuing Operations $ (157,162 ) $ 850,840 $ 272,977 $ — $ 966,655 Cash Flows from Operating Activities-Discontinued Operations — — — — — Cash Flows from Operating Activities (157,162 ) 850,840 272,977 — 966,655 Cash Flows from Investing Activities: Capital expenditures — (412,725 ) (280,258 ) — (692,983 ) Cash paid for acquisitions, net of cash acquired — (9,508 ) (48,729 ) — (58,237 ) Intercompany loans to subsidiaries (124,897 ) 4,637 — 120,260 — Acquisitions of customer relationships, customer inducements and data center lease-based intangibles — (99,610 ) (32,037 ) — (131,647 ) Investment in joint ventures — (19,222 ) — — (19,222 ) Net proceeds from Divestments — — — — — Proceeds from sales of property and equipment and other, net (including real estate) and proceeds from involuntary conversion of property and equipment — 115,775 50,368 — 166,143 Cash Flows from Investing Activities-Continuing Operations (124,897 ) (420,653 ) (310,656 ) 120,260 (735,946 ) Cash Flows from Investing Activities-Discontinued Operations — 2,564 2,497 — 5,061 Cash Flows from Investing Activities (124,897 ) (418,089 ) (308,159 ) 120,260 (730,885 ) Cash Flows from Financing Activities: Repayment of revolving credit and term loan facilities and other debt — (10,479,101 ) (4,056,014 ) — (14,535,115 ) Proceeds from revolving credit and term loan facilities and other debt — 10,057,145 4,002,673 — 14,059,818 Net proceeds from sales of senior notes 987,500 — — — 987,500 Debit (payments) balances under cash pools — (10,612 ) 119,945 (109,333 ) — Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net — — (1,924 ) — (1,924 ) Intercompany loans from parent — 143,767 (23,507 ) (120,260 ) — Parent cash dividends (704,526 ) — — — (704,526 ) Net proceeds (payments) associated with employee stock-based awards 1,027 — — — 1,027 Payment of debt financing and stock issuance costs and other (1,969 ) (1,060 ) (2,724 ) — (5,753 ) Cash Flows from Financing Activities-Continuing Operations 282,032 (289,861 ) 38,449 (229,593 ) (198,973 ) Cash Flows from Financing Activities-Discontinued Operations — — — — — Cash Flows from Financing Activities 282,032 (289,861 ) 38,449 (229,593 ) (198,973 ) Effect of exchange rates on cash and cash equivalents — — (8,727 ) — (8,727 ) Increase (Decrease) in cash and cash equivalents (27 ) 142,890 (5,460 ) (109,333 ) 28,070 Cash and cash equivalents, including Restricted Cash, beginning of year 132 63,407 169,318 (67,372 ) 165,485 Cash and cash equivalents, including Restricted Cash, end of year $ 105 $ 206,297 $ 163,858 $ (176,705 ) $ 193,555 CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued) Year Ended December 31, 2018 Parent Guarantors Non- Eliminations Consolidated Cash Flows from Operating Activities: Cash Flows from Operating Activities-Continuing Operations $ (217,819 ) $ 880,615 $ 273,748 $ — $ 936,544 Cash Flows from Operating Activities-Discontinued Operations — (995 ) — — (995 ) Cash Flows from Operating Activities (217,819 ) 879,620 273,748 — 935,549 Cash Flows from Investing Activities: Capital expenditures — (313,510 ) (146,552 ) — (460,062 ) Cash paid for acquisitions, net of cash acquired — (1,338,888 ) (419,669 ) — (1,758,557 ) Intercompany loans to subsidiaries 805,799 90,569 — (896,368 ) — Acquisitions of customer relationships, customer inducements and data center lease-based intangibles — (76,388 ) (22,299 ) — (98,687 ) Net proceeds from Divestments — 1,019 — — 1,019 Proceeds from sales of property and equipment and other, net (including real estate) and proceeds from involuntary conversion of property and equipment — 299 85,860 — 86,159 Cash Flows from Investing Activities-Continuing Operations 805,799 (1,636,899 ) (502,660 ) (896,368 ) (2,230,128 ) Cash Flows from Investing Activities-Discontinued Operations — 8,250 — — 8,250 Cash Flows from Investing Activities 805,799 (1,628,649 ) (502,660 ) (896,368 ) (2,221,878 ) Cash Flows from Financing Activities: Repayment of revolving credit and term loan facilities and other debt — (7,355,086 ) (6,837,053 ) — (14,192,139 ) Proceeds from revolving credit and term loan facilities and other debt — 8,445,551 6,906,063 — 15,351,614 Debit balances (payments) under cash pools — (45,621 ) 18,267 27,354 — Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net — — (2,523 ) — (2,523 ) Intercompany loans from parent — (862,425 ) (33,943 ) 896,368 — Parent cash dividends (673,635 ) — — — (673,635 ) Net payments associated with employee stock-based awards (1,142 ) — — — (1,142 ) Net proceeds associated with the Equity Offering, including Over-Allotment Option 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 and other (412 ) (12,391 ) (3,602 ) — (16,405 ) Cash Flows from Financing Activities-Continuing Operations (590,281 ) 170,028 47,209 923,722 550,678 Cash Flows from Financing Activities-Discontinued Operations — — — — — Cash Flows from Financing Activities (590,281 ) 170,028 47,209 923,722 550,678 Effect of exchange rates on cash and cash equivalents — — (24,563 ) — (24,563 ) (Decrease) Increase in cash and cash equivalents (2,301 ) (579,001 ) (206,266 ) 27,354 (760,214 ) Cash and cash equivalents, including Restricted Cash, beginning of year 2,433 642,408 375,584 (94,726 ) 925,699 Cash and cash equivalents, including Restricted Cash, end of year $ 132 $ 63,407 $ 169,318 $ (67,372 ) $ 165,485 CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued) Year Ended December 31, 2017 Parent Guarantors Non- Eliminations Consolidated Cash Flows from Operating Activities: Cash Flows from Operating Activities-Continuing Operations $ (203,403 ) $ 737,532 $ 190,130 $ — $ 724,259 Cash Flows from Operating Activities-Discontinued Operations — (1,345 ) (1,946 ) — (3,291 ) Cash Flows from Operating Activities (203,403 ) 736,187 188,184 — 720,968 Cash Flows from Investing Activities: Capital expenditures — (237,004 ) (106,127 ) — (343,131 ) Cash paid for acquisitions, net of cash acquired — (96,946 ) (122,759 ) — (219,705 ) Intercompany loans to subsidiaries (990,635 ) (344,919 ) — 1,335,554 — Investment in subsidiaries (16,170 ) — — 16,170 — Acquisitions of customer relationships and customer inducements — (63,759 ) (11,426 ) — (75,185 ) Net proceeds from Divestments — — 29,236 — 29,236 Proceeds from sales of property and equipment and other, net (including real estate) and proceeds from involuntary conversion of property and equipment — 12,963 (3,626 ) — 9,337 Cash Flows from Investing Activities-Continuing Operations (1,006,805 ) (729,665 ) (214,702 ) 1,351,724 (599,448 ) Cash Flows from Investing Activities-Discontinued Operations — — — — — Cash Flows from Investing Activities (1,006,805 ) (729,665 ) (214,702 ) 1,351,724 (599,448 ) Cash Flows from Financing Activities: Repayment of revolving credit and term loan facilities and other debt (262,579 ) (8,077,553 ) (6,089,563 ) — (14,429,695 ) Proceeds from revolving credit and term loan facilities and other debt 224,660 7,650,436 6,041,959 — 13,917,055 Early retirement of senior subordinated and senior notes (1,031,554 ) — (715,302 ) — (1,746,856 ) Net proceeds from sales of senior notes 2,134,870 — 522,078 — 2,656,948 Debit balances (payments) under cash pools — 56,233 38,493 (94,726 ) — Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net — — 9,079 — 9,079 Intercompany loans from parent — 992,708 342,846 (1,335,554 ) — Equity contribution from parent — — 16,170 (16,170 ) — Parent cash dividends (439,999 ) — — — (439,999 ) Net proceeds associated with employee stock-based awards 13,095 — — — 13,095 Net proceeds associated with the Equity Offering, including Over-Allotment Option 516,462 — — — 516,462 Net proceeds associated with the At The Market (ATM) Program 59,129 — — — 59,129 Payment of debt financing and stock issuance costs (3,848 ) (9,391 ) (1,554 ) — (14,793 ) Cash Flows from Financing Activities-Continuing Operations 1,210,236 612,433 164,206 (1,446,450 ) 540,425 Cash Flows from Financing Activities-Discontinued Operations — — — — — Cash Flows from Financing Activities 1,210,236 612,433 164,206 (1,446,450 ) 540,425 Effect of exchange rates on cash and cash equivalents — — 27,270 — 27,270 Increase (Decrease) in cash and cash equivalents 28 618,955 164,958 (94,726 ) 689,215 Cash and cash equivalents, including Restricted Cash, beginning of year 2,405 23,453 210,626 — 236,484 Cash and cash equivalents, including Restricted Cash, end of year $ 2,433 $ 642,408 $ 375,584 $ (94,726 ) $ 925,699

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2019
Business Combinations [Abstract]
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. (Unaudited) Year Ended December 31, 2018 2017 Total Revenues $ 4,229,251 $ 3,983,016 Income from Continuing Operations $ 377,510 $ 110,677 Per Share Income from Continuing Operations - Basic $ 1.32 $ 0.39 Per Share Income from Continuing Operations - Diluted $ 1.31 $ 0.39
Schedule of recognized identified assets acquired and liabilities assumed	A summary of the cumulative consideration paid and the allocation of the purchase price paid for all of our acquisitions in each respective year is as follows: 2019 2018 2017 Total IODC Transaction Other Fiscal Year 2018 Acquisitions Total Total Cash Paid (gross of cash acquired)(1) $ 53,230 $ 1,347,046 $ 432,078 $ 1,779,124 $ 234,314 Purchase Price Holdbacks and Other(2) 4,135 — 35,218 35,218 20,093 Fair Value of Common Stock Issued — — — — 83,014 Fair Value of Noncontrolling Interests — — — — 1,507 Total Consideration 57,365 1,347,046 467,296 1,814,342 338,928 Fair Value of Identifiable Assets Acquired: Cash 2,260 34,307 10,227 44,534 14,746 Accounts Receivable, Prepaid Expenses and Other Assets 3,102 7,070 17,662 24,732 24,379 Property, Plant and Equipment(3) 5,396 863,027 225,848 1,088,875 150,878 Customer Relationship Intangible Assets(4) 22,071 — 44,622 44,622 116,028 Operating Lease Right-of-Use Assets 16,956 — — — — Data Center In-Place Leases(5) — 104,340 36,130 140,470 6,300 Data Center Tenant Relationships(6) — 77,362 18,410 95,772 — Data Center Above-Market Leases(7) — 16,439 2,381 18,820 — Other Intangible Assets — — — — 14,487 Debt Assumed — — (12,312 ) (12,312 ) (5,287 ) Accounts Payable, Accrued Expenses and Other Liabilities (3,233 ) (36,230 ) (17,206 ) (53,436 ) (24,869 ) Operating Lease Liabilities (16,956 ) — — — — Deferred Income Taxes (1,813 ) — (43,218 ) (43,218 ) (18,122 ) Data Center Below-Market Leases(7) — (11,421 ) (694 ) (12,115 ) — Total Fair Value of Identifiable Net Assets Acquired 27,783 1,054,894 281,850 1,336,744 278,540 Goodwill Initially Recorded(8) $ 29,582 $ 292,152 $ 185,446 $ 477,598 $ 60,388 _______________________________________________________________________________ (1) Included in cash paid for acquisitions in our Consolidated Statement of Cash Flows for the year ended December 31, 2019 is net cash acquired of $2,260 and contingent and other payments, net of $7,267 related to acquisitions made in years prior to 2019 . Included in cash paid for acquisitions in our Consolidated Statement of Cash Flows for the year ended December 31, 2018 is net cash acquired of $44,534 and contingent and other payments, net of $23,967 related to acquisitions made in years prior to 2018 . Included in cash paid for acquisitions in our Consolidated Statement of Cash Flows for the year ended December 31, 2017 is net cash acquired of $14,746 and contingent and other payments, net of $137 related to acquisitions made in years prior to 2017 . (2) Purchase price holdbacks and other includes $18,824 purchase price accrued for the EvoSwitch Transaction in 2018 and $16,771 purchase price accrued for the Santa Fe China Transaction in 2017. (3) Consists primarily of buildings, building improvements, leasehold improvements, data center infrastructure, racking structures, warehouse equipment and computer hardware and software. (4) The weighted average lives of customer relationship intangible assets associated with acquisitions in 2019 , 2018 and 2017 was 16 years, 10 years and 12 years, respectively. (5) The weighted average lives of data center in-place leases associated with acquisitions in 2018 was six years . (6) The weighted average lives of data center tenant relationships associated with acquisitions in 2018 was nine years . (7) The weighted average lives of data center above-market leases associated with acquisitions in 2018 was three years and the weighted average lives of data center below-market leases associated with acquisitions in 2018 was seven years . (8) The goodwill associated with acquisitions, including IODC, 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.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Components of deferred tax assets and deferred tax liabilities	The deferred tax assets and deferred tax liabilities are presented below: December 31, 2019 2018 Noncurrent deferred tax assets (Included in Other, a component of Other assets, net) $ 16,538 $ 16,648 Deferred income taxes (188,128 ) (183,836 ) The significant components of our deferred tax assets and deferred tax liabilities are presented below: December 31, 2019 2018 Deferred Tax Assets: Accrued liabilities and other adjustments(1) $ 53,197 $ 59,477 Net operating loss carryforwards 99,240 92,952 Federal benefit of unrecognized tax benefits 3,039 2,925 Valuation allowance (60,003 ) (55,666 ) 95,473 99,688 Deferred Tax Liabilities: Other assets, principally due to differences in amortization (177,645 ) (166,469 ) Plant and equipment, principally due to differences in depreciation (67,515 ) (74,147 ) Other (21,903 ) (26,260 ) (267,063 ) (266,876 ) Net deferred tax liability $ (171,590 ) $ (167,188 ) ______________________________________________________________________________ (1) Amounts as of December 31, 2018 has been restated to reflect the impact of the Netherlands VAT liability (as discussed in Note 2.y.) which resulted in an increase in accrued liabilities and other adjustments of $4,971 .
Roll forward of Valuation allowance	Rollforward of the valuation allowance is as follows: Year Ended December 31, Balance at Beginning of the Year Charged (Credited) to Expense Other Increases/(Decreases)(1) Balance at End of the Year 2019 $ 55,666 $ 6,211 $ (1,874 ) $ 60,003 2018 61,756 3,568 (9,658 ) 55,666 2017 71,359 (4,317 ) (5,286 ) 61,756 _______________________________________________________________________________ (1) Other increases and decreases in valuation allowances are primarily related to changes in foreign currency exchange rates and disposal of certain foreign subsidiaries.
Components of income (loss) from continuing operations before provision for income taxes	The components of income (loss) from continuing operations before provision (benefit) for income taxes are: Year Ended December 31, 2019 2018 2017 United States $ 203,225 $ 203,078 $ 162,763 Canada 48,326 53,779 50,019 Other Foreign 76,591 153,454 (11,805 ) $ 328,142 $ 410,311 $ 200,977
Provision (benefit) for income taxes	The provision (benefit) for income taxes consists of the following components: Year Ended December 31, 2019 2018 2017 Federal—current $ 7,262 $ 703 $ 16,345 Federal—deferred (3,356 ) (4,162 ) (12,655 ) State—current 3,943 918 3,440 State—deferred (1,126 ) 627 (1,276 ) Foreign—current 49,350 45,371 42,532 Foreign—deferred 3,858 (704 ) (25,424 ) Provision (Benefit) for Income Taxes $ 59,931 $ 42,753 $ 22,962
Reconciliation of total income tax expense and amount computed by applying the federal income tax rate	A reconciliation of total income tax expense and the amount computed by applying the current federal statutory tax rate of 21.0% to income from continuing operations before provision (benefit) for income taxes for the years ended December 31, 2019 and 2018 and the former federal statutory tax rate of 35.0% to income from continuing operations before provision (benefit) for income taxes for the year ended December 31, 2017 is as follows: Year Ended December 31, 2019 2018 2017 Computed "expected" tax provision $ 68,910 $ 86,165 $ 70,342 Changes in income taxes resulting from: Tax adjustment relating to REIT (40,577 ) (35,165 ) (78,873 ) State taxes (net of federal tax benefit) 2,115 1,599 2,692 Increase (decrease) in valuation allowance (net operating losses) 6,211 3,568 (4,317 ) Foreign repatriation — — 29,476 U.S. Federal Rate Reduction — — (4,685 ) Reserve (reversal) accrual and audit settlements (net of federal tax benefit) 514 (13,985 ) (9,103 ) Foreign tax rate differential 8,562 1,031 (9,639 ) Disallowed foreign interest, Subpart F income, and other foreign taxes 14,241 903 29,325 Other, net (45 ) (1,363 ) (2,256 ) Provision (Benefit) for Income Taxes $ 59,931 $ 42,753 $ 22,962
Tax years subject to examination by major tax jurisdictions	A summary of tax years that remain subject to examination by major tax jurisdictions is as follows: Tax Years Tax Jurisdiction See Below United States—Federal and State 2015 to present United Kingdom 2012 to present Canada
Reconciliation of unrecognized tax benefits	A rollforward of unrecognized tax benefits is as follows: Gross tax contingencies—December 31, 2016 $ 59,466 Gross additions based on tax positions related to the current year 4,067 Gross additions for tax positions of prior years 3,368 Gross reductions for tax positions of prior years(1) (2,789 ) Lapses of statutes (2,629 ) Settlements (22,950 ) Gross tax contingencies—December 31, 2017 38,533 Gross additions based on tax positions related to the current year 3,147 Gross additions for tax positions of prior years 981 Gross reductions for tax positions of prior years (2,865 ) Lapses of statutes (4,462 ) Settlements (14 ) Gross tax contingencies—December 31, 2018 35,320 Gross additions based on tax positions related to the current year 2,914 Gross additions for tax positions of prior years 1,271 Gross reductions for tax positions of prior years (299 ) Lapses of statutes (4,034 ) Settlements (104 ) Gross tax contingencies—December 31, 2019 $ 35,068 _______________________________________________________________________________ (1) This amount includes gross additions related to the Recall Transaction.

Quarterly Results of Operatio_2

Quarterly Results of Operations (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Quarterly Results of Operations (Unaudited)	Quarter Ended March 31 June 30 September 30 December 31 2019 Total revenues $ 1,053,863 $ 1,066,907 $ 1,062,224 $ 1,079,590 Operating income (loss) 158,675 193,115 223,474 206,074 Income (loss) from continuing operations 30,476 92,347 108,284 37,104 Total (loss) income from discontinued operations (24 ) 128 — — Net income (loss) 30,452 92,475 108,284 37,104 Net income (loss) attributable to Iron Mountain Incorporated 29,561 92,441 107,675 37,700 (1) Earnings (losses) per Share-Basic: Income (loss) per share from continuing operations 0.10 0.32 0.37 0.13 Total (loss) income per share from discontinued operations — — — — Net income (loss) per share attributable to Iron Mountain Incorporated 0.10 0.32 0.37 0.13 Earnings (losses) per Share-Diluted: Income (loss) per share from continuing operations 0.10 0.32 0.37 0.13 Total (loss) income per share from discontinued operations — — — — Net income (loss) per share attributable to Iron Mountain Incorporated 0.10 0.32 0.37 0.13 2018 Total revenues $ 1,042,458 $ 1,060,823 $ 1,060,991 $ 1,061,489 Operating income (loss) 157,119 201,460 195,635 254,053 Income (loss) from continuing operations(2) 39,389 92,263 77,349 158,557 Total (loss) income from discontinued operations (462 ) (360 ) (11,605 ) — Net income (loss) 38,927 91,903 65,744 158,557 Net income (loss) attributable to Iron Mountain Incorporated 38,459 91,761 65,869 157,844 (3) Earnings (losses) per Share-Basic: Income (loss) per share from continuing operations 0.14 0.32 0.27 0.55 Total (loss) income per share from discontinued operations — — (0.04 ) — Net income (loss) per share attributable to Iron Mountain Incorporated 0.13 0.32 0.23 0.55 Earnings (losses) per Share-Diluted: Income (loss) per share from continuing operations 0.14 0.32 0.27 0.55 Total (loss) income per share from discontinued operations — — (0.04 ) — Net income (loss) per share attributable to Iron Mountain Incorporated 0.13 0.32 0.23 0.55 _______________________________________________________________________________ (1) The change in net income (loss) attributable to Iron Mountain Incorporated in the fourth quarter of 2019 compared to the third quarter of 2019 is primarily attributable to (i) an increase of approximately $63,000 in losses on foreign currency transactions in the fourth quarter of 2019 compared to the third quarter of 2019, (ii) Restructuring Charges of $48,600 , which began in the fourth quarter of 2019 (as described in Note 14), partially offset by (iii) an increase in net gains on disposal/write-down of property, plant and equipment of $37,500 recorded during the fourth quarter of 2019 compared to the third quarter of 2019 and (iv) a decrease of approximately $5,100 in the provision for income taxes recorded in the fourth quarter of 2019 compared to the third quarter of 2019. (2) Income (loss) from continuing operations reflects the immaterial restatement described in Note 2.y., which reduced Income (loss) from continuing operations for the three month periods ended March 31, 2018, June 30, 2018, September 30, 2018 and December 31, 2018 by $6,225 , $1,640 , $1,279 and $274 , respectively. (3) The change in net income (loss) attributable to Iron Mountain Incorporated in the fourth quarter of 2018 compared to the third quarter of 2018 is primarily attributable to (i) gains of approximately $62,500 recorded during the fourth quarter of 2018 associated with the sale of land and buildings in the United Kingdom (see Note 2.g.), (ii) a gain on disposal/write-down of property, plant and equipment (excluding real estate) recorded during the fourth quarter of 2018 of approximately $8,800 related to the receipt of insurance proceeds related to the involuntary conversion of certain assets in a facility we own in Argentina (see Note 2.g.), (iii) a decrease in the provision for income taxes recorded in the fourth quarter of 2018 compared to the third quarter of 2018 of approximately $11,200 , (iv) an increase in gains on foreign currency transactions in the fourth quarter of 2018 compared to the third quarter of 2018 of approximately $20,000 and (v) a charge of $11,100 recorded during the third quarter of 2018 relating to the resolution of the post-closing adjustments to the Access Contingent Consideration (as defined and discussed in Note 13) that did not recur during the fourth quarter of 2018.

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 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 Consolidated Financial Statements is as follows: Global RIM Business Global Data Center Business Corporate and Total As of and for the Year Ended December 31, 2019 Total Revenues $ 3,812,433 $ 257,151 $ 193,000 $ 4,262,584 Storage Rental 2,320,076 246,925 114,086 2,681,087 Service 1,492,357 10,226 78,914 1,581,497 Depreciation and Amortization 454,652 133,927 69,622 658,201 Depreciation 330,534 78,939 46,850 456,323 Amortization 124,118 54,988 22,772 201,878 Adjusted EBITDA 1,563,223 121,517 (247,135 ) 1,437,605 Total Assets(1) 10,753,218 2,535,848 527,750 13,816,816 Expenditures for Segment Assets 398,690 427,935 56,242 882,867 Capital Expenditures 248,232 392,029 52,722 692,983 Cash Paid for Acquisitions, Net of Cash Acquired 54,717 — 3,520 58,237 Acquisitions of Customer Relationships, Customer Inducements, Contract Fulfillment Costs and third-party commissions 95,741 35,906 — 131,647 As of and for the Year Ended December 31, 2018 Total Revenues $ 3,842,600 $ 228,983 $ 154,178 $ 4,225,761 Storage Rental 2,301,344 218,675 102,436 2,622,455 Service 1,541,256 10,308 51,742 1,603,306 Depreciation and Amortization 472,155 105,680 61,679 639,514 Depreciation 341,384 58,707 52,649 452,740 Amortization 130,771 46,973 9,030 186,774 Adjusted EBITDA 1,569,353 99,574 (244,103 ) 1,424,824 Total Assets(1) 9,135,198 2,217,505 504,515 11,857,218 Expenditures for Segment Assets 443,634 1,794,386 79,286 2,317,306 Capital Expenditures 254,308 152,739 53,015 460,062 Cash Paid for Acquisitions, Net of Cash Acquired 93,217 1,639,427 25,913 1,758,557 Acquisitions of Customer Relationships, Customer Inducements and Contract Fulfillment Costs 96,109 2,220 358 98,687 As of and for the Year Ended December 31, 2017 Total Revenues $ 3,706,110 $ 37,694 $ 101,774 $ 3,845,578 Storage Rental 2,261,831 35,839 79,887 2,377,557 Service 1,444,279 1,855 21,887 1,468,021 Depreciation and Amortization 458,634 10,224 53,518 522,376 Depreciation 351,915 8,617 45,751 406,283 Amortization 106,719 1,607 7,767 116,093 Adjusted EBITDA 1,470,579 11,275 (238,281 ) 1,243,573 Total Assets(1) 9,151,755 382,198 1,441,434 10,975,387 Expenditures for Segment Assets 424,628 86,543 126,850 638,021 Capital Expenditures 262,474 32,015 48,642 343,131 Cash Paid for Acquisitions, Net of Cash Acquired(2) 86,969 54,528 78,208 219,705 Acquisitions of Customer Relationships and Customer Inducements 75,185 — — 75,185 _______________________________________________________________________________ (1) Excludes all intercompany receivables or payables and investment in subsidiary balances. Total Assets as of December 31, 2019 reflects the adoption of ASU 2016-02. Total Assets for the Corporate and Other Business segment have been restated to reflect the impact of the Netherlands VAT liability (as discussed in Note 2.y.) which resulted in an increase in total assets for this segment of $4,971 and $2,985
Schedule of Reconciliation of Adjusted EBITDA to Income (Loss) From Continuing Operations on a Consolidated Basis	A reconciliation of Adjusted EBITDA to income (loss) from continuing operations on a consolidated basis is as follows: Year Ended December 31, 2019 2018 2017 Adjusted EBITDA $ 1,437,605 $ 1,424,824 $ 1,243,573 (Add)/Deduct: Provision (Benefit) for Income Taxes 59,931 42,753 22,962 Other Expense (Income), Net 33,898 (11,692 ) 79,429 Interest Expense, Net 419,298 409,648 353,645 (Gain) Loss on disposal/write-down of property, plant and equipment, net (63,824 ) (73,622 ) (766 ) Depreciation and amortization 658,201 639,514 522,376 Significant Acquisition Costs 13,293 50,665 84,901 Restructuring Charges 48,597 — — Intangible impairments — — 3,011 Income (Loss) from Continuing Operations $ 268,211 $ 367,558 $ 178,015
Schedule of Operations in Different Geographical Areas	Information as to our operations in different geographical areas is as follows: Year Ended December 31, 2019 2018 2017 Revenues: United States $ 2,632,586 $ 2,579,847 $ 2,310,296 United Kingdom 274,931 280,993 246,373 Canada 243,033 249,505 243,625 Australia 143,511 155,367 157,333 Remaining Countries 968,523 960,049 887,951 Total Revenues $ 4,262,584 $ 4,225,761 $ 3,845,578 Long-lived Assets: United States $ 7,862,262 $ 6,902,232 $ 5,476,551 United Kingdom 755,859 547,768 529,233 Canada 556,591 453,398 500,396 Australia 530,755 442,755 470,432 Remaining Countries 2,875,010 2,302,951 2,048,460 Total Long-lived Assets $ 12,580,477 $ 10,649,104 $ 9,025,072
Schedule of Revenues By Product and Service Lines	Information as to our revenues by product and service lines by segment are as follows: Global RIM Business Global Data Center Business Corporate and Total For the Year Ended December 31, 2019 Records Management(1) $ 2,866,192 $ — $ 128,954 $ 2,995,146 Data Management(1) 520,082 — 64,046 584,128 Information Destruction(1)(2) 426,159 — — 426,159 Data Center — 257,151 — 257,151 Total Revenues $ 3,812,433 $ 257,151 $ 193,000 $ 4,262,584 For the Year Ended December 31, 2018 Records Management(1) $ 2,871,253 $ — $ 96,669 $ 2,967,922 Data Management(1) 539,035 — 57,509 596,544 Information Destruction(1)(2) 432,312 — — 432,312 Data Center — 228,983 — 228,983 Total Revenues $ 3,842,600 $ 228,983 $ 154,178 $ 4,225,761 For the Year Ended December 31, 2017 Records Management(1) $ 2,778,024 $ — $ 69,667 $ 2,847,691 Data Management(1) 542,148 — 32,103 574,251 Information Destruction(1)(2) 385,938 — 4 385,942 Data Center — 37,694 — 37,694 Total Revenues $ 3,706,110 $ 37,694 $ 101,774 $ 3,845,578 _______________________________________________________________________________ (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 the destruction services offering, which does not have a storage rental component. (2) Includes Secure Shredding services.
Schedule of Acquisition costs Included in Statement of Operations	Significant Acquisition Costs included in the accompanying Consolidated Statements of Operations by segment are as follows: Year Ended December 31, 2019 2018 2017 Global RIM Business $ 8,223 $ 20,590 $ 47,722 Global Data Center Business 337 11,423 — Corporate and Other Business 4,733 18,652 37,179 Total Significant Acquisition Costs $ 13,293 $ 50,665 $ 84,901

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Contractual obligations related to purchase commitments	We have certain contractual obligations related to purchase commitments which require minimum payments as follows: Year Purchase 2020 $ 134,127 2021 68,208 2022 32,480 2023 2,004 2024 1,985 Thereafter 340 $ 239,144 ______________________________________________________________________ (1) Purchase commitments (i) include obligations for future construction costs associated with the expansion of our Global Data Center Business, which represent a significant amount of the purchase commitments due in 2020 and (ii) exclude our operating and financing lease obligations (see Note 2.m.).

Stockholders' Equity Matters (T

Stockholders' Equity Matters (Tables)	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Schedule of Dividends Declared and Payments	In 2017 , 2018 and 2019 , our board of directors declared the following dividends: Declaration Date Dividend Per Share Record Date Total Amount Payment Date February 15, 2017 $ 0.5500 March 15, 2017 $ 145,235 April 3, 2017 May 24, 2017 0.5500 June 15, 2017 145,417 July 3, 2017 July 27, 2017 0.5500 September 15, 2017 146,772 October 2, 2017 October 24, 2017 0.5875 December 15, 2017 166,319 January 2, 2018 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 October 31, 2019 0.6185 December 16, 2019 177,687 January 2, 2020
Schedule of Classification of Dividends Paid	For the years ended December 31, 2019 , 2018 , and 2017 , the dividends we paid on our common shares were classified as follows: Year Ended December 31, 2019 2018 2017 Nonqualified ordinary dividends 54.8 % 83.0 % 82.1 % Qualified ordinary dividends 4.5 % 4.8 % 17.9 % Capital gains 14.7 % 5.8 % — % Return of capital 26.0 % 6.4 % — % 100.0 % 100.0 % 100.0 %

Divestments (Tables)

Divestments (Tables)	12 Months Ended
	Dec. 31, 2019
Discontinued Operations and Disposal Groups [Abstract]
Summary of Operations of the Recall Divestments	The table below summarizes certain results of operations of the Recall Divestments included in discontinued operations for the years ended December 31, 2019 , 2018 and 2017 : Year Ended December 31, Description 2019 2018(1) 2017 Total Revenues $ — $ — $ — Income (Loss) from Discontinued Operations Before Provision (Benefit) for Income Taxes 104 (12,574 ) (8,118 ) (Benefit) Provision for Income Taxes — (147 ) (1,827 ) Income (Loss) from Discontinued Operations, Net of Tax $ 104 $ (12,427 ) $ (6,291 ) ______________________________________________________________________________ (1) As indicated above, on May 4, 2016, we completed the Access Sale. As part of the total consideration for the Access Sale we were entitled to receive up to $25,000 of additional cash proceeds (the "Access Contingent Consideration"). During 2018, we settled the Access Contingent Consideration with Access CIG, as well as indemnification claims Access CIG previously raised in connection with the Access Sale. Changes to the realizable value of the Access Contingent Consideration were recorded to our Consolidated Statement of Operations as a component of discontinued operations. The loss from discontinued operations during the year ended December 31, 2018 primarily relates to losses incurred due to the resolution of the post-closing adjustments to the Access Contingent Consideration in connection with our agreement with Access CIG.

Restructuring Charges (Tables)

Restructuring Charges (Tables)	12 Months Ended
	Dec. 31, 2019
Restructuring and Related Activities [Abstract]
Schedule of restructuring	Restructuring Charges included in the accompanying Consolidated Statement of Operations by segment for the year ended December 31, 2019 is as follows: Year Ended December 31, 2019 Global RIM Business $ 21,900 Global Data Center Business 306 Corporate and Other Business 26,391 Restructuring Charges $ 48,597

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Cash and Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Restricted cash	$ 4,865	$ 15,141

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Derivative Instruments and Hedging Activities (Details)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Target percentage of debt portfolio with fixed interest rates	75.00%

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	$ 8,048,906	$ 7,600,949
Capitalized interest	15,980	3,732
Capitalization of internal use computer software	34,650	29,407	$ 25,166
Asset retirement obligations	30,831	28,256
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	448,566	400,980
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	3,029,309	2,991,307
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	852,022	770,666
Racking
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	2,040,832	2,001,831
Warehouse equipment/vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	483,218	481,515
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	54,275	56,207
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	689,261	680,283
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, stated at cost	$ 451,423	$ 218,160
Minimum | Buildings and building improvements
Property, Plant and Equipment [Line Items]
Useful life	5 years
Minimum | Leasehold improvements
Property, Plant and Equipment [Line Items]
Useful life	5 years
Minimum | Racking
Property, Plant and Equipment [Line Items]
Useful life	1 year
Minimum | Warehouse equipment/vehicles
Property, Plant and Equipment [Line Items]
Useful life	1 year
Minimum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful life	1 year
Minimum | Computer hardware and software
Property, Plant and Equipment [Line Items]
Useful life	2 years
Maximum | Buildings and building improvements
Property, Plant and Equipment [Line Items]
Useful life	40 years
Maximum | Leasehold improvements
Property, Plant and Equipment [Line Items]
Useful life	10 years
Maximum | Racking
Property, Plant and Equipment [Line Items]
Useful life	20 years
Maximum | Warehouse equipment/vehicles
Property, Plant and Equipment [Line Items]
Useful life	10 years
Maximum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful life	10 years
Maximum | Computer hardware and software
Property, Plant and Equipment [Line Items]
Useful life	5 years

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Long Lived Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
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	$ 63,824	$ 73,622	$ 766
Sale and sale-leaseback transactions	67,800
Loss on disposal/write-down of property, plant and equipment	(63,824)	(74,134)	$ (766)
Iron Mountain Iron Cloud
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal/write-down of property, plant and equipment	25,000
United Kingdom
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of real estate, net of tax		$ 63,800
United States
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Write down of property	15,700
Disposed of by sale | United Kingdom
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

Summary of Significant Accoun_8

Summary of Significant Accounting Policies - Goodwill and Other Indefinite-Lived Intangible Assets (Details) unit in Thousands, $ in Thousands	Oct. 01, 2017USD ($)	Dec. 31, 2019USD ($)unit	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Accounting Policies [Abstract]
Intangible impairments | $	$ 3,011	$ 0	$ 0	$ 3,011
Number of reporting units | unit		9

Summary of Significant Accoun_9

Summary of Significant Accounting Policies - Schedule of Carrying Value of Goodwill, by Reporting Unit (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Goodwill
Goodwill	$ 4,485,209	$ 4,441,030
Global RIM Business | North American Records And Information Management
Goodwill
Goodwill	2,715,550	2,251,795
Global RIM Business | Western Europe
Goodwill
Goodwill	572,482
Global RIM Business | Latin America
Goodwill
Goodwill	140,897
Global RIM Business | ANZ SA
Goodwill
Goodwill	274,913
Global RIM Business | Asia
Goodwill
Goodwill	239,059
North American Data Management Business | North American Data Management
Goodwill
Goodwill		493,491
Corporate and Other Business | Consumer Storage
Goodwill
Goodwill		0
Corporate and Other Business | Fine Arts
Goodwill
Goodwill	37,533	35,526
Corporate and Other Business | Entertainment Services
Goodwill
Goodwill	34,102	34,233
Corporate and Other Business | Technology Escrow Services
Goodwill
Goodwill	46,105
Western European Business | Western Europe
Goodwill
Goodwill		381,806
Other International Business | NEE And MEI
Goodwill
Goodwill		169,780
Other International Business | Latin America
Goodwill
Goodwill		136,099
Other International Business | ANZ SA
Goodwill
Goodwill		300,204
Other International Business | Asia
Goodwill
Goodwill		212,140
Global Data Center Business | Global Data Center
Goodwill
Goodwill	$ 424,568	$ 425,956

Summary of Significant Accou_10

Summary of Significant Accounting Policies - Schedule of Changes in Carrying Value of Goodwill, by Reportable Operating Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Gross amount of goodwill [Roll Forward]
Beginning balance	$ 4,441,030	$ 4,070,267
Deductible goodwill acquired during the year	16,450	9,895
Non-deductible goodwill acquired during the year	13,132	467,703
Fair value and other adjustments	4,280	4,469
Currency effects	10,317	(110,102)
Ending balance	4,485,209	4,441,030
Accumulated goodwill impairment	135,420	135,420
Accounting adjustments	4,942	(2,717)
Cash paid for previous acquisition		7,186
Cash received related to certain acquisitions	662
Global RIM Business
Gross amount of goodwill [Roll Forward]
Beginning balance	3,899,210	3,964,114
Deductible goodwill acquired during the year	16,450	3,251
Non-deductible goodwill acquired during the year	11,228	34,230
Fair value and other adjustments	4,439	3,860
Currency effects	11,574	(105,043)
Ending balance	3,942,901	3,899,210
Accumulated goodwill impairment	132,409	132,409
Global Data Center Business
Gross amount of goodwill [Roll Forward]
Beginning balance	425,956	0
Deductible goodwill acquired during the year	0	0
Non-deductible goodwill acquired during the year	0	429,853
Fair value and other adjustments	258	0
Currency effects	(1,646)	(3,897)
Ending balance	424,568	425,956
Accumulated goodwill impairment	0	0
Corporate and Other Business
Gross amount of goodwill [Roll Forward]
Beginning balance	115,864	106,153
Deductible goodwill acquired during the year	0	6,644
Non-deductible goodwill acquired during the year	1,904	3,620
Fair value and other adjustments	(417)	609
Currency effects	389	(1,162)
Ending balance	117,740	115,864
Accumulated goodwill impairment	$ 3,011	3,011
Disposal Group, Not Discontinued Operations | IMFS
Gross amount of goodwill [Roll Forward]
Goodwill allocated to IMFS Divestment (see Note 13)		(1,202)
Disposal Group, Not Discontinued Operations | IMFS | Global RIM Business
Gross amount of goodwill [Roll Forward]
Goodwill allocated to IMFS Divestment (see Note 13)		(1,202)
Disposal Group, Not Discontinued Operations | IMFS | Global Data Center Business
Gross amount of goodwill [Roll Forward]
Goodwill allocated to IMFS Divestment (see Note 13)		0
Disposal Group, Not Discontinued Operations | IMFS | Corporate and Other Business
Gross amount of goodwill [Roll Forward]
Goodwill allocated to IMFS Divestment (see Note 13)		$ 0

Summary of Significant Accou_11

Summary of Significant Accounting Policies - Customer Relationships and Acquisition Costs and Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Amortizable intangible assets
Net Carrying Amount	$ 1,393,183	$ 1,506,522
Amortization	201,878	186,774	$ 116,093
Included in Depreciation and Amortization
Estimated amortization expense for existing intangible assets for the next five succeeding fiscal years
2020	160,865
2021	157,647
2022	127,148
2023	121,256
2024	116,253
Thereafter	712,369
Customer relationship intangible assets
Amortizable intangible assets
Gross Carrying Amount	1,751,848	1,718,919
Accumulated Amortization	(544,721)	(455,705)
Net Carrying Amount	$ 1,207,127	1,263,214
Customer relationship intangible assets | Minimum
Amortizable intangible assets
Useful life of finite-lived intangible assets	10 years
Customer relationship intangible assets | Maximum
Amortizable intangible assets
Useful life of finite-lived intangible assets	30 years
Customer relationship intangible assets | Weighted Average
Amortizable intangible assets
Useful life of finite-lived intangible assets	17 years
Customer Inducements
Amortizable intangible assets
Useful life of finite-lived intangible assets	3 years
Gross Carrying Amount	$ 52,718	56,478
Accumulated Amortization	(29,397)	(34,181)
Net Carrying Amount	$ 23,321	22,297
Customer Inducements, Current Record Management Vendor Or Payments To Customers | Minimum
Amortizable intangible assets
Useful life of finite-lived intangible assets	5 years
Customer Inducements, Current Record Management Vendor Or Payments To Customers | Maximum
Amortizable intangible assets
Useful life of finite-lived intangible assets	15 years
Customer Inducements, Current Record Management Vendor Or Payments To Customers | Weighted Average
Amortizable intangible assets
Useful life of finite-lived intangible assets	7 years
Data center in-place leases | Weighted Average
Amortizable intangible assets
Remaining amortization period	5 years
Data center tenant relationships | Weighted Average
Amortizable intangible assets
Remaining amortization period	8 years
Customer relationship and customer inducement intangible assets
Amortizable intangible assets
Amortization	$ 117,972	113,782	109,563
Data center in-place leases and tenant relationships
Amortizable intangible assets
Amortization	$ 46,696	43,061	0
Data Center Above Market Leases | Weighted Average
Amortizable intangible assets
Remaining amortization period	4 years
Data Center Below Market Leases | Weighted Average
Amortizable intangible assets
Remaining amortization period	9 years
Other Intangible Assets
Amortizable intangible assets
Gross Carrying Amount	$ 19,893	20,310
Accumulated Amortization	(18,405)	(14,798)
Net Carrying Amount	$ 1,488	5,512
Other Intangible Assets | Weighted Average
Amortizable intangible assets
Useful life of finite-lived intangible assets	4 years
Data center lease-based intangible assets
Amortizable intangible assets
Gross Carrying Amount	$ 265,945	271,818
Accumulated Amortization	(103,210)	(50,807)
Net Carrying Amount	162,735	221,011
Gross Carrying Amount	12,750	12,318
Accumulated Amortization	(3,937)	(1,642)
Net Carrying Amount	8,813	10,676
Third-party commissions asset and other finite-lived intangible assets
Amortizable intangible assets
Gross Carrying Amount	31,708	30,071
Accumulated Amortization	(4,134)	(1,089)
Net Carrying Amount	27,574	28,982
Amortization	7,957	5,713	6,530
Permanent withdrawal fees
Amortizable intangible assets
Amortization	9,993	11,408	11,253
Permanent withdrawal fees | Amortization Expense Charged To Revenues
Estimated amortization expense for existing intangible assets for the next five succeeding fiscal years
2020	7,760
2021	5,207
2022	3,200
2023	2,112
2024	1,125
Thereafter	1,303
Data center above-market leases and data center below-market leases
Amortizable intangible assets
Amortization	3,710	4,873	$ 0
Data center above-market leases and data center below-market leases | Amortization Expense Charged To Revenues
Estimated amortization expense for existing intangible assets for the next five succeeding fiscal years
2020	872
2021	234
2022	273
2023	(470)
2024	(610)
Thereafter	(3,112)
Customer Relationships, Customer Inducements and Data Center
Amortizable intangible assets
Gross Carrying Amount	2,102,219	2,077,286
Accumulated Amortization	(681,462)	(541,782)
Net Carrying Amount	$ 1,420,757	$ 1,535,504

Summary of Significant Accou_12

Summary of Significant Accounting Policies - Deferred Financing Costs (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Gross deferred financing costs	$ 144,981	$ 128,469
Accumulated amortization of deferred financing costs	58,016	$ 41,862
Deferred Financing Costs, Amortization Expense, Rolling Maturity [Abstract]
2020	17,132
2021	16,002
2022	14,888
2023	11,618
2024	8,424
Thereafter	$ 18,901

Summary of Significant Accou_13

Summary of Significant Accounting Policies - Prepaid Expenses and Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Minimum percentage of current assets and liabilities required to be disclosed separately	5.00%		5.00%
Interest	$ 97,987		$ 84,283
Incentive compensation	56,662		75,256
Sales tax and VAT payable	115,352		124,232
Dividend	186,021		181,986
Operating lease liabilities	223,249	$ 209,911
Other	282,481		315,024
Accrued expenses	$ 961,752		$ 780,781

Summary of Significant Accou_14

Summary of Significant Accounting Policies - Revenue - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2018
Capitalized Contract Cost [Line Items]
Revenue from sales of products, percentage					2.00%
Storage rental revenue					$ 2,681,087
Revenues	$ 1,061,489	$ 1,060,991	$ 1,060,823	$ 1,042,458		$ 4,225,761	$ 3,845,578
Intake Costs asset
Capitalized Contract Cost [Line Items]
Capitalized contract cost, amortization period					3 years
Commissions asset
Capitalized Contract Cost [Line Items]
Capitalized contract cost, amortization period					3 years
Contract term					1 year
Storage rental
Capitalized Contract Cost [Line Items]
Revenues						2,622,455	2,377,557
ASU 2014-09
Capitalized Contract Cost [Line Items]
Decrease to stockholders' equity							30,233	$ 30,200
Global Data Center Business
Capitalized Contract Cost [Line Items]
Storage rental revenue					$ 246,925
Revenues						228,983	37,694
Global Data Center Business | Storage rental
Capitalized Contract Cost [Line Items]
Revenues						218,675	$ 35,839
Global Data Center Business | Power and connectivity
Capitalized Contract Cost [Line Items]
Storage rental revenue					$ 43,300
Revenues						$ 38,800

Summary of Significant Accou_15

Summary of Significant Accounting Policies - Revenue - Contract Fulfillment Costs (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Intake Costs asset
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Gross Carrying Amount	$ 41,224	$ 39,748
Accumulated Amortization	(23,579)	(24,504)
Net Carrying Amount	17,645	15,244
Commissions asset
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Gross Carrying Amount	68,008	58,424
Accumulated Amortization	(27,178)	(34,637)
Net Carrying Amount	$ 40,830	$ 23,787

Summary of Significant Accou_16

Summary of Significant Accounting Policies - Revenue - Amortization Expense Associated with Commissions Asset and Intake Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Intake Costs asset
Capitalized Contract Cost [Line Items]
Amortization expense	$ 10,144	$ 10,380
Capitalized commissions asset
Capitalized Contract Cost [Line Items]
Amortization expense	$ 19,109	$ 13,838

Summary of Significant Accou_17

Summary of Significant Accounting Policies - Revenue - Estimated Amortization Expense for Contract Fulfillment Costs (Details) $ in Thousands	Dec. 31, 2019USD ($)
Accounting Policies [Abstract]
2020	$ 28,156
2021	20,448
2022	$ 9,871

Summary of Significant Accou_18

Summary of Significant Accounting Policies - Revenue - Summary of Deferred Revenue Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Deferred revenue - Current	$ 274,036	$ 264,823
Deferred revenue - Long-term	$ 36,029	$ 26,401

Summary of Significant Accou_19

Summary of Significant Accounting Policies - Revenue - Data Center (Details) $ in Thousands	Dec. 31, 2019USD ($)
Accounting Policies [Abstract]
2020	$ 202,130
2021	135,911
2022	98,797
2023	80,079
2024	$ 68,376

Summary of Significant Accou_20

Summary of Significant Accounting Policies - Leases Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Operating lease rent expense			$ 365,762	$ 350,403
Sublease Income		$ 6,637
Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term		5 years
Lessee, operating lease, renewal term		1 year
Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term		10 years
Lessee, operating lease, renewal term		5 years
Vehicle And Equipment | Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term		1 year
Vehicle And Equipment | Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term		7 years
ASU 2016-02
Lessee, Lease, Description [Line Items]
Cumulative effect of new accounting principle in period of adoption			$ 5,781		$ 5,800
United Kingdom
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term		25 years
Forecast | United Kingdom
Lessee, Lease, Description [Line Items]
Rent expense	$ 5,000

Summary of Significant Accou_21

Summary of Significant Accounting Policies - Supplemental Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Operating lease right-of-use assets	$ 1,869,101	$ 1,825,721	$ 0
Financing lease right-of-use assets, net of accumulated depreciation	327,215	361,078
Total	2,196,316	2,186,799
Current
Operating lease liabilities	223,249	209,911
Financing lease liabilities	46,582	50,437
Total current lease liabilities	269,831	260,348
Long-term
Operating lease liabilities	1,728,686	1,685,771	$ 0
Financing lease liabilities	320,600	350,263
Total long-term lease liabilities	2,049,286	2,036,034
Total	$ 2,319,117	$ 2,296,382
Operating lease, right-of-use asset, real estate assets, percent	99.00%
Operating lease, right-of-use asset, non-real estate assets, percent	1.00%
Finance lease, right-of-use asset, real estate assets, percent	69.00%
Finance lease, right-of-use asset, non-real estate assets, percent	31.00%

Summary of Significant Accou_22

Summary of Significant Accounting Policies - Leases Costs (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 459,619
Depreciation of financing lease right-of-use assets	59,258
Interest expense for financing lease liabilities	21,031
Total financing lease cost	80,289
Variable lease costs	$ 105,922
Operating leases, Remaining Lease Term	11 years
Finance leases, Remaining Lease Term	11 years 7 months 6 days
Operating leases, Discount Rate	7.10%
Financing leases, Discount Rate	5.70%
Cost of Sales
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 447,194
Selling, general and administrative expenses
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 12,425

Summary of Significant Accou_23

Summary of Significant Accounting Policies - Estimated Future Lease Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Leases, Operating [Abstract]
2020	$ 339,469
2021	319,628
2022	295,981
2023	267,809
2024	237,604
Thereafter	1,454,918
Total minimum lease payments	2,915,409
Less amounts representing interest or imputed interest	(963,474)
Present value of lease obligations	1,951,935
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
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		(7,525)
2020	(7,695)	(7,200)
2021	(5,282)	(7,063)
2022	(4,996)	(6,694)
2023	(4,885)	(6,409)
2024	(3,543)
Thereafter	(7,691)	(6,279)
Total minimum lease payments	(34,092)	(41,170)
Finance Lease, Liability, Payment, Due [Abstract]
2020	62,271
2021	54,993
2022	44,886
2023	39,130
2024	31,849
Thereafter	277,890
Total minimum lease payments	511,019
Less amounts representing interest or imputed interest	(143,837)
Present value of lease obligations	$ 367,182	447,173
Capital Lease Obligations [Abstract]
2019		80,513
2020		71,335
2021		61,269
2022		52,832
2023		44,722
Thereafter		377,750
Capital Leases, Total minimum lease payments		688,421
Less amounts representing interest		(241,248)
Present value of lease obligations		$ 447,173

Summary of Significant Accou_24

Summary of Significant Accounting Policies - Supplemental Cash Flows (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Accounting Policies [Abstract]
Operating cash flows used in operating leases	$ 338,059
Operating cash flows used in financing leases (interest)	21,031
Financing cash flows used in financing leases	58,033
Operating lease modifications and reassessments	108,023
New operating leases (including acquisitions)	170,464
New financing leases, modifications and reassessments	$ 32,742

Summary of Significant Accou_25

Summary of Significant Accounting Policies - Stock-Based Compensation (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)offering_period$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017USD ($)$ / sharesshares
Employee stock-based awards
Contractual term of awards	3 years
Stock-based compensation | $	$ 35,654	$ 31,167	$ 30,019
Stock-based compensation expense (income), net of tax | $	$ 33,103	$ 28,998	$ 26,512
Stock-based compensation expense per basic and diluted share (in dollars per share) | $ / shares	$ 0.12	$ 0.10	$ 0.10
Certain options as a percentage of total outstanding options	100.00%
Total amount of shares of common stock reserved and available for issuance pursuant to awards granted under the 2014 Plan (in shares)	48,253,839
Summary of option activity
Options outstanding balance, end of period (in shares)	4,835,721
Employee Stock Purchase Plan
Employee stock purchase plan, shares available for grant	4,095,067
Employee stock-based awards, unrecognized compensation costs on nonvested awards | $	$ 39,696
Employee stock-based awards, weighted average recognition period	1 year 9 months 18 days
Tranche Two
Employee stock-based awards
Certain options as a percentage of total outstanding options	3.00%
Summary of option activity
Options outstanding balance, end of period (in shares)	144,400
Tranche One
Employee stock-based awards
Certain options as a percentage of total outstanding options	97.00%
Summary of option activity
Options outstanding balance, end of period (in shares)	4,691,321
Performance Units Original 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)	(206,279)
Forfeited (in shares)	(27,935)
Non-vested at the end of the period (in shares)	1,113,691	967,049
Restricted Stock Units (RSUs)
Dividends accrued and paid
Accrued cash dividends | $	$ 3,215	$ 2,899	$ 2,590
Cash dividends paid | $	2,369	2,477	2,370
Total fair value of shares or units vested | $	$ 21,191	$ 20,454	19,825
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)	(299,948)
Performance Shares
Dividends accrued and paid
Accrued cash dividends | $	$ 2,260	$ 1,804	1,290
Cash dividends paid | $	1,162	644	205
Total fair value of shares or units vested | $	$ 6,503	$ 3,117	$ 1,242
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)	(206,279)
Forfeited (in shares)	(42,785)
Non-vested at the end of the period (in shares)	798,893	667,101
Weighted average grant date fair value
Weighted average grant date fair value, non-vested, beginning of period (in dollars per share) | $ / shares	$ 36.54
Weighted average grant date fair value, granted (in dollars per share) | $ / shares	36.07
Weighted average grant date fair value, vested (in dollars per share) | $ / shares	37.97
Weighted average grant date fair value, forfeited (in dollars per share) | $ / shares	26.50
Weighted average grant date fair value, non-vested, end of period (in dollars per share) | $ / shares	$ 36.56	$ 36.54
Performance units disclosure
Period of anniversary from the date of grant	3 years
Qualifying age for grant of performance units	55 years
Qualifying service period	10 years
Performance Shares | Two Thousand Sixteen
Performance units disclosure
Percentage of achievement of the predefined revenue and ROIC targets	100.00%
Performance Shares | Two Thousand Seventeen
Performance units disclosure
Percentage of achievement of the predefined revenue and ROIC targets		50.00%
Performance Shares | Two Thousand Eighteen
Performance units disclosure
Percentage of achievement of the predefined revenue and ROIC targets			100.00%
Performance Shares | Revenue or revenue growth and return on invested capital
Performance units disclosure
Performance period	3 years
Performance Shares | Market condition associated with shareholder return of common stock
Performance units disclosure
Performance period	3 years
Performance Shares | Minimum | Predefined Targets Of Revenue And Return On Invested Capital Or Adjusted EBITDA
Performance units disclosure
Percentage payout rate	0.00%
Performance Shares | Minimum | Market condition associated with shareholder return of common stock
Performance units disclosure
Percentage payout rate	0.00%
Performance Shares | Maximum | Predefined Targets Of Revenue And Return On Invested Capital Or Adjusted EBITDA
Performance units disclosure
Percentage payout rate	200.00%
Performance Shares | Maximum | Market condition associated with shareholder return of common stock
Performance units disclosure
Percentage payout rate	200.00%
Employee Stock Purchase Plan
Employee Stock Purchase Plan
Employee stock purchase plan, number of offering periods | offering_period	2
Employee stock purchase plan, duration of offering periods	6 months
Employee stock purchase plan, maximum employee subscription rate percent	15.00%
Percentage of market price for the purchase of shares	95.00%
Employee stock purchase plan, shares issued in period	129,505	119,123	102,826
Employee stock purchase plan, shares available for grant	376,140
Three Year Vesting Option
Employee stock-based awards
Contractual term of awards	10 years
Award vesting period	3 years
Five Year Vesting Option
Employee stock-based awards
Contractual term of awards	10 years
Award vesting period	5 years
Stock And Cash Incentive Plan2014
Employee stock-based awards
Total amount of shares of common stock reserved and available for issuance pursuant to awards granted under the 2014 Plan (in shares)	12,750,000
Employee And Non Employees Stock Option
Employee stock-based awards
Weighted average fair value of options granted (in dollars per share) | $ / shares	$ 3.58	$ 3.50	$ 4.28
Weighted average assumptions used for grants
Expected volatility (as a percent)	24.30%	25.40%	25.70%
Risk-free interest rate (as a percent)	2.47%	2.65%	1.96%
Expected dividend yield (as a percent)	7.00%	7.00%	6.00%
Expected life of the option	5 years	5 years	5 years
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)	(303,543)
Options forfeited (in shares)	(23,984)
Options expired (in shares)	(29,292)
Options outstanding balance, end of period (in shares)	4,835,721	4,271,834
Options exercisable balance (in shares)	3,068,945
Options expected to vest (in shares)	1,648,127
Weighted Average Exercise Price
Weighted average exercise price, options outstanding balance beginning of period (in dollars per share) | $ / shares	$ 34.78
Weighted average exercise price, options granted (in dollars per share) | $ / shares	35.71
Weighted average exercise price, options exercised (in dollars per share) | $ / shares	23.86
Weighted average exercise price, options forfeited (in dollars per share) | $ / shares	35.21
Weighted average exercise price, options expired (in dollars per share) | $ / shares	34.78
Weighted average exercise price, options outstanding balance end of period (in dollars per share) | $ / shares	35.64	$ 34.78
Weighted average exercise price, options exercisable (in dollars per share) | $ / shares	35.80
Weighted average exercise price, options expected to vest (in dollars per share) | $ / shares	$ 35.34
Weighted average remaining contractual term
Weighted average remaining contractual term, options outstanding	6 years 8 months 19 days
Weighted average remaining contractual term, options exercisable	5 years 9 months 21 days
Weighted average remaining contractual term, options expected to vest	8 years 5 months 19 days
Aggregate intrinsic value
Aggregate intrinsic value, options outstanding | $	$ 3,005
Aggregate intrinsic value, options exercisable | $	3,005
Aggregate intrinsic value, options expected to vest | $	0
Aggregate intrinsic value of stock options exercised
Aggregate intrinsic value of stock options exercised | $	$ 3,148	$ 2,181	$ 8,485
Restricted Stock And Restricted Stock Units
Employee stock-based awards
Award vesting period	3 years
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)	823,508
Vested (in shares)	(678,138)
Forfeited (in shares)	(138,337)
Non-vested at the end of the period (in shares)	1,203,599	1,196,566
Weighted average grant date fair value
Weighted average grant date fair value, non-vested, beginning of period (in dollars per share) | $ / shares	$ 34.33
Weighted average grant date fair value, granted (in dollars per share) | $ / shares	34.72
Weighted average grant date fair value, vested (in dollars per share) | $ / shares	34.06
Weighted average grant date fair value, forfeited (in dollars per share) | $ / shares	34.75
Weighted average grant date fair value, non-vested, end of period (in dollars per share) | $ / shares	$ 34.71	$ 34.33
Performance Units Original Awards
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Granted (in shares)		353,507	229,692

Summary of Significant Accou_26

Summary of Significant Accounting Policies - Income (Loss) Per Share - Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income (Loss) Per Share-Basic and Diluted
Income (Loss) from Continuing Operations	$ 37,104	$ 108,284	$ 92,347	$ 30,476	$ 158,557	$ 77,349	$ 92,263	$ 39,389	$ 268,211	$ 367,558	$ 178,015
Less: Net income (loss) attributable to noncontrolling interests									938	1,198	1,611
Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation)									267,273	366,360	176,404
Income (loss) from discontinued operations, net of tax	0	0	128	(24)	0	(11,605)	(360)	(462)	104	(12,427)	(6,291)
Net Income (Loss) Attributable to Iron Mountain Incorporated	$ 37,700	$ 107,675	$ 92,441	$ 29,561	$ 157,844	$ 65,869	$ 91,761	$ 38,459	$ 267,377	$ 353,933	$ 170,113
Weighted-average shares—basic (in shares)									286,971,000	285,913,000	265,898,000
Effect of dilutive potential stock options (in shares)									145,509	234,558	431,071
Effect of dilutive potential RSUs and PUs (in shares)									570,435	505,030	509,235
Effect of Over-Allotment Option (in shares)									0	0	6,278
Weighted-average shares—diluted (in shares)									287,686,944	286,652,588	266,844,584
Earnings (losses) per share—basic:
Income (loss) from continuing operations (in dollars per share)	$ 0.13	$ 0.37	$ 0.32	$ 0.10	$ 0.55	$ 0.27	$ 0.32	$ 0.14	$ 0.93	$ 1.28	$ 0.66
(Loss) income from discontinued operations, net of tax (in dollars per share)	0	0	0	0	0	(0.04)	0	0	0	(0.04)	(0.02)
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)	0.13	0.37	0.32	0.10	0.55	0.23	0.32	0.13	0.93	1.24	0.64
Earnings (losses) per share—diluted:
Income (Loss) from Continuing Operations (in dollars per share)	0.13	0.37	0.32	0.10	0.55	0.27	0.32	0.14	0.93	1.28	0.66
(Loss) income from discontinued operations, net of tax (in dollars per share)	0	0	0	0	0	(0.04)	0	0	0	(0.04)	(0.02)
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)	$ 0.13	$ 0.37	$ 0.32	$ 0.10	$ 0.55	$ 0.23	$ 0.32	$ 0.13	$ 0.93	$ 1.23	$ 0.64
Antidilutive stock options, RSUs and PUs, excluded from the calculation (in shares)									4,475,745	3,258,078	2,326,344

Summary of Significant Accou_27

Summary of Significant Accounting Policies - Allowance for Doubtful Accounts and Credit Memo Reserves (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Valuation Allowance [Line Items]
The general period to charge-off uncollectible balances of receivable, as circumstances warrant, is no later than this period of time past due	1 year
SEC Schedule, 12-09, Allowance, Credit Loss
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of the Year	$ 43,584	$ 46,648	$ 44,290
Credit Memos Charged to Revenue	51,846	36,329	38,966
Allowance for Bad Debts Charged to Expense	19,389	18,625	14,826
Deductions and Other	(71,963)	(58,018)	(51,434)
Balance at End of the Year	$ 42,856	$ 43,584	$ 46,648

Summary of Significant Accou_28

Summary of Significant Accounting Policies - Concentration of Credit Risk (Details)	12 Months Ended
	Dec. 31, 2019USD ($)fund	Dec. 31, 2018USD ($)bank
Cash and Cash Equivalents [Line Items]
Number of "Triple A" rated money market funds with cash, cash equivalent and restricted cash held on deposit | fund	7
Money market funds	$ 13,653,000	$ 0
Number of global banks with cash, cash equivalent and restricted cash held on deposit | bank		7
Maximum investment limit in any one financial institution	75,000,000
Cash and cash equivalents	$ 193,555,000	$ 165,485,000
Investment in single mutual fund | Credit Concentration Risk
Cash and Cash Equivalents [Line Items]
Concentration risk percentage	1.00%

Summary of Significant Accou_29

Summary of Significant Accounting Policies - Fair Value Measurements (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Assets and liabilities carried at fair value measured on a recurring basis
Money Market Funds	$ 13,653,000	$ 0
Fair Value, Measurements, Recurring | Quoted prices in active markets (Level 1)
Assets and liabilities carried at fair value measured on a recurring basis
Money Market Funds	0	0
Trading Securities	10,168,000	10,248,000
Derivative Assets		0
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring | Significant other observable inputs (Level 2)
Assets and liabilities carried at fair value measured on a recurring basis
Money Market Funds	13,653,000	956,000
Trading Securities	564,000	505,000
Derivative Assets		93,000
Derivative Liabilities	9,756,000	973,000
Fair Value, Measurements, Recurring | Significant unobservable inputs (Level 3)
Assets and liabilities carried at fair value measured on a recurring basis
Money Market Funds	0	0
Trading Securities	0	0
Derivative Assets		0
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring | Estimated Fair Value
Assets and liabilities carried at fair value measured on a recurring basis
Money Market Funds	13,653,000	956,000
Trading Securities	10,732,000	10,753,000
Derivative Assets		93,000
Derivative Liabilities	$ 9,756,000	$ 973,000

Summary of Significant Accou_30

Summary of Significant Accounting Policies - Accumulated Other Comprehensive Income, Other Expenses, and Change in Accounting Pronouncements (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other comprehensive loss:
Stockholders' equity, beginning balance	$ 1,862,463,000	$ 2,285,134,000	$ 1,936,671,000
Other comprehensive (loss) income:
Stockholders' equity, ending balance	1,464,227,000	1,862,463,000	2,285,134,000
Foreign Currency Translation Adjustment
Other comprehensive loss:
Stockholders' equity, beginning balance	(264,691,000)	(103,989,000)	(212,573,000)
Other comprehensive (loss) income:
Foreign currency translation adjustment	11,866,000	(160,702,000)	108,584,000
Change in fair value of derivative instruments	0	0
Total other comprehensive (loss) income	11,866,000	(160,702,000)	108,584,000
Stockholders' equity, ending balance	(252,825,000)	(264,691,000)	(103,989,000)
Change in Fair Value of Derivative Instruments
Other comprehensive loss:
Stockholders' equity, beginning balance		0	0
Other comprehensive (loss) income:
Foreign currency translation adjustment			0
Total other comprehensive (loss) income			0
Stockholders' equity, ending balance			0
Change in Fair Value of Derivative Instruments
Other comprehensive loss:
Stockholders' equity, beginning balance	(973,000)
Other comprehensive (loss) income:
Foreign currency translation adjustment	0	0
Change in fair value of derivative instruments	(8,783,000)	(973,000)
Total other comprehensive (loss) income	(8,783,000)	(973,000)
Stockholders' equity, ending balance	(9,756,000)	(973,000)
Total
Other comprehensive loss:
Stockholders' equity, beginning balance	(265,664,000)	(103,989,000)	(212,573,000)
Other comprehensive (loss) income:
Foreign currency translation adjustment	11,866,000	(160,702,000)	108,584,000
Change in fair value of derivative instruments	(8,783,000)	(973,000)
Total other comprehensive (loss) income	3,083,000	(161,675,000)	108,584,000
Stockholders' equity, ending balance	$ (262,581,000)	$ (265,664,000)	(103,989,000)
Disposal Group, Not Discontinued Operations | Russia and Ukraine Divestment
Other comprehensive (loss) income:
Cumulative translation adjustment			$ 29,100,000

Summary of Significant Accou_31

Summary of Significant Accounting Policies - Other Expense (Income), Net (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Foreign currency transaction losses (gains), net		$ 24,852	$ (15,567)	$ 43,248
Debt extinguishment expense, net		0	0	78,368
Other, net		9,046	3,875	(42,187)
Other Expense (Income), Net		33,898	(11,692)	79,429
Gain on divestiture		$ 0	$ 0	38,869
Disposal Group, Not Discontinued Operations | Russia and Ukraine Divestment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on divestiture	$ 38,869			$ 38,869

Summary of Significant Accou_32

Summary of Significant Accounting Policies - Schedule of Effect of Changes in Presentation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Selling, general and administrative									$ 991,664	$ 1,006,983	$ 937,180
Significant Acquisition Costs									13,293	50,665	84,901
(Gain) Loss on disposal/write-down of property, plant and equipment, net	$ 37,500
Total Operating Expenses									3,481,246	3,417,494	3,211,527
Operating Income (Loss)	$ 206,074	$ 223,474	$ 193,115	$ 158,675	$ 254,053	$ 195,635	$ 201,460	$ 157,119	781,338	808,267	634,051
Provision (Benefit) for Income Taxes									$ 59,931	42,753	22,962
Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Selling, general and administrative										11,045	16,623
Total Operating Expenses										11,045	16,623
Operating Income (Loss)										(11,045)	(16,623)
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes										(11,404)	(16,693)
Provision (Benefit) for Income Taxes										(1,986)	(2,985)
Correction In Presentation | Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales (excluding depreciation and amortization)										(7,628)	(20,493)
Selling, general and administrative										(43,037)	(64,408)
Significant Acquisition Costs										50,665	84,901
(Gain) Loss on disposal/write-down of property, plant and equipment, net										(63,804)	(1,565)
Total Operating Expenses										(63,804)	(1,565)
Operating Income (Loss)										63,804	1,565
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes										63,804	1,565
Provision (Benefit) for Income Taxes										8,476	0
Gain on Sale of Real Estate, Net of tax										55,328	1,565
Correction In Presentation | Restatement | Significant Acquisition Costs
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales (excluding depreciation and amortization)										(7,628)	(20,493)
Selling, general and administrative										(43,037)	(64,408)
Significant Acquisition Costs										50,665	84,901
(Gain) Loss on disposal/write-down of property, plant and equipment, net										0	0
Total Operating Expenses										0	0
Operating Income (Loss)										0	0
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes										0	0
Provision (Benefit) for Income Taxes										0	0
Gain on Sale of Real Estate, Net of tax										0	0
Correction In Presentation | Restatement | Gain on Sale of Real Estate
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales (excluding depreciation and amortization)										0	0
Selling, general and administrative										0	0
Significant Acquisition Costs										0	0
(Gain) Loss on disposal/write-down of property, plant and equipment, net										(63,804)	(1,565)
Total Operating Expenses										(63,804)	(1,565)
Operating Income (Loss)										63,804	1,565
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes										63,804	1,565
Provision (Benefit) for Income Taxes										8,476	0
Gain on Sale of Real Estate, Net of tax										$ 55,328	$ 1,565

Summary of Significant Accou_33

Summary of Significant Accounting Policies - Immaterial Restatement Narrative (Details) (Details) € in Thousands, $ in Thousands	Dec. 31, 2019USD ($)	Jun. 30, 2019EUR (€)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Error Corrections and Prior Period Adjustments Restatement [Line Items]
(Distributions in excess of earnings) Earnings in excess of distributions	$ (2,574,896)		$ (2,139,493)
Tax and Customs Administration, Netherlands | Foreign
Error Corrections and Prior Period Adjustments Restatement [Line Items]
VAT liability		€ 16,800	4,971
Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
(Distributions in excess of earnings) Earnings in excess of distributions			$ (23,126)	$ (13,708)

Summary of Significant Accou_34

Summary of Significant Accounting Policies - Immaterial Restatements (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Selling, general and administrative									$ 991,664	$ 1,006,983	$ 937,180
Total Operating Expenses									3,481,246	3,417,494	3,211,527
Operating Income (Loss)	$ 206,074	$ 223,474	$ 193,115	$ 158,675	$ 254,053	$ 195,635	$ 201,460	$ 157,119	781,338	808,267	634,051
Interest Expense, Net									(419,298)	(409,648)	(353,645)
Provision (Benefit) for Income Taxes									59,931	42,753	22,962
Income (Loss) from Continuing Operations	37,104	108,284	92,347	30,476	158,557	77,349	92,263	39,389	268,211	367,558	178,015
Net Income (Loss)	37,104	108,284	92,475	30,452	158,557	65,744	91,903	38,927	268,315	355,131	171,724
Net income (loss) attributable to Iron Mountain Incorporated	$ 37,700	$ 107,675	$ 92,441	$ 29,561	$ 157,844	$ 65,869	$ 91,761	$ 38,459	$ 267,377	$ 353,933	$ 170,113
Income (Loss) from Continuing Operations (in dollars per share)	$ 0.13	$ 0.37	$ 0.32	$ 0.10	$ 0.55	$ 0.27	$ 0.32	$ 0.14	$ 0.93	$ 1.28	$ 0.66
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)	0.13	0.37	0.32	0.10	0.55	0.23	0.32	0.13	0.93	1.24	0.64
Income (Loss) from Continuing Operations (in dollars per share)	0.13	0.37	0.32	0.10	0.55	0.27	0.32	0.14	0.93	1.28	0.66
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)	$ 0.13	$ 0.37	$ 0.32	$ 0.10	$ 0.55	$ 0.23	$ 0.32	$ 0.13	$ 0.93	$ 1.23	$ 0.64
Total Other Assets, Net	$ 7,957,440				$ 6,159,547				$ 7,957,440	$ 6,159,547
Total Assets	13,816,816				11,857,218				13,816,816	11,857,218	$ 10,975,387
Accrued expenses and other current liabilities	961,752				780,781				961,752	780,781
Total Current Liabilities	1,949,509				1,490,775				1,949,509	1,490,775
(Distribution in excess of earnings) Earnings in excess of distributions	(2,574,896)				(2,139,493)				(2,574,896)	(2,139,493)
Total Iron Mountain Incorporated Stockholders' Equity	$ 1,463,962				1,861,054				$ 1,463,962	1,861,054
Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Selling, general and administrative										11,045	16,623
Total Operating Expenses										11,045	16,623
Operating Income (Loss)										(11,045)	(16,623)
Interest Expense, Net										359	70
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes										(11,404)	(16,693)
Provision (Benefit) for Income Taxes										(1,986)	(2,985)
Income (Loss) from Continuing Operations										(9,418)	(13,708)
Net Income (Loss)										(9,418)	(13,708)
Net income (loss) attributable to Iron Mountain Incorporated										$ (9,418)	$ (13,708)
Income (Loss) from Continuing Operations (in dollars per share)										$ (0.03)	$ (0.05)
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)										(0.03)	(0.05)
Income (Loss) from Continuing Operations (in dollars per share)										(0.03)	(0.05)
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share)										$ (0.03)	$ (0.05)
Total Other Assets, Net					4,971					$ 4,971
Total Assets					4,971					4,971
Accrued expenses and other current liabilities					28,097					28,097
Total Current Liabilities					28,097					28,097
(Distribution in excess of earnings) Earnings in excess of distributions					(23,126)					(23,126)	$ (13,708)
Total Iron Mountain Incorporated Stockholders' Equity					$ (23,126)					$ (23,126)

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Interest Rate Swap Agreements (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Jul. 31, 2019
Derivative [Line Items]
Unrealized losses	$ 8,783,000	$ 973,000
Interest Rate Swap
Derivative [Line Items]
Notional amount of derivatives	350,000,000	350,000,000	$ 350,000,000
Unrealized losses	7,801,000	973,000
Cumulative unrealized losses within accumulated other comprehensive items, net	8,774,000
Interest Rate Swap | Other Noncurrent Liabilities
Derivative [Line Items]
Derivative liability	$ 8,774,000	$ 973,000

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Net Investment Hedges (Details) - Cross-currency swap agreements - Net Investment Hedging € in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 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 losses	$ (982)
Other Noncurrent Liabilities
Derivative [Line Items]
Derivative liability	$ 982

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities - Hedge of Net Investment (Details) (Details) - Euro Notes - Designated Hedging Instruments - Net Investment Hedging € in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2019EUR (€)	Dec. 31, 2018EUR (€)	Dec. 31, 2017EUR (€)
Derivative [Line Items]
Hedged notes | €		€ 284,986	€ 224,424	€ 103,682
Cumulative net gains | $	$ 20,261

Derivative Instruments and He_6

Derivative Instruments and Hedging Activities - Schedule of Foreign Exchange Gains Related to Fair of Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Foreign exchange gains (losses)	$ 6,003	$ 11,070	$ (15,015)

Derivative Instruments and He_7

Derivative Instruments and Hedging Activities - Forward Currency Contracts (Details) - Not Designated as Hedging Instrument - Foreign Exchange Currency Forward Contracts € in Thousands	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018EUR (€)
Derivative [Line Items]
Notional amount	$ 0
Purchase
Derivative [Line Items]
Notional amount | €			€ 29,000
Sell
Derivative [Line Items]
Notional amount		$ 33,374,000
Prepaid expenses and other
Derivative [Line Items]
Derivative assets		$ 93,000

Derivative Instruments and He_8

Derivative Instruments and Hedging Activities - Net Cash (Receipts) Payments Included In Cash From Operating Activities (Details) - Foreign exchange contracts - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Net payments	$ 737	$ 5,797
Net receipts			$ (9,073)

Derivative Instruments and He_9

Derivative Instruments and Hedging Activities - Amount of (Gains) Losses in Income on Derivatives (Details) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Foreign exchange contracts | Derivatives Not Designated as Hedging Instruments
Derivative [Line Items]
Foreign exchange contracts, other expense (income), net	$ 737	$ 4,954	$ (8,292)

Debt - Schedule of Long Term De

Debt - Schedule of Long Term Debt (Details) $ in Thousands, $ in Thousands	Dec. 31, 2019USD ($)	Dec. 31, 2019AUD ($)	Sep. 30, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018AUD ($)	Mar. 27, 2018AUD ($)	Sep. 30, 2017USD ($)	Aug. 21, 2017USD ($)	Sep. 28, 2016AUD ($)
Debt Instrument [Line Items]
Debt (inclusive of discount)	$ 8,751,544			$ 8,229,430
Unamortized Deferred Financing Costs	(86,965)			(86,607)
Total Long-term Debt (including current portion)	8,664,579			8,142,823
Debt, current portion	(389,013)			(126,406)
Unamortized deferred financing costs, current portion	0			0
Carrying amount, current portion	(389,013)			(126,406)
Long-term debt, net of current portion	8,362,531			8,103,024
Unamortized deferred financing costs	(86,965)			(86,607)
Long-term debt, net of current portion	$ 8,275,566			8,016,417
Capital stock of subsidiaries pledged to secure debt (as a percent)	66.00%	66.00%
Unamortized original issue discount	$ 2,587
Capital lease obligations	367,182			447,173
Revolving Credit Facility | New Credit Agreement
Debt Instrument [Line Items]
Debt (inclusive of discount)	348,808			793,832
Unamortized Deferred Financing Costs	(12,053)			(14,117)
Total Long-term Debt (including current portion)	336,755			779,715
Fair Value	348,808			793,832
Revolving Credit Facility | UK Bilateral Revolving Credit Facility
Debt Instrument [Line Items]
Debt (inclusive of discount)	184,601			178,299
Unamortized Deferred Financing Costs	(1,801)			(2,357)
Total Long-term Debt (including current portion)	182,800			175,942
Fair Value	184,601			178,299
Term Loan Facility | New Credit Agreement
Debt Instrument [Line Items]
Debt (inclusive of discount)								$ 250,000
Term Loan Facility | Term Loan A
Debt Instrument [Line Items]
Debt (inclusive of discount)	228,125			240,625
Unamortized Deferred Financing Costs	0			0
Total Long-term Debt (including current portion)	228,125			240,625
Fair Value	228,125			240,625
Term Loan Facility | Term Loan B
Debt Instrument [Line Items]
Debt (inclusive of discount)	686,395			693,169
Unamortized Deferred Financing Costs	(7,493)			(8,742)
Total Long-term Debt (including current portion)	678,902			684,427
Fair Value	686,890			660,013
Unamortized original issue discount	1,355			1,581
Australian Dollar Term Loan
Debt Instrument [Line Items]
Debt (inclusive of discount)	226,924			233,955		$ 350,000			$ 250,000
Unamortized Deferred Financing Costs	(2,313)			(3,084)
Total Long-term Debt (including current portion)	224,611			230,871
Fair Value	228,156	$ 325,313		235,645	$ 334,063
Unamortized original issue discount	1,232			1,690
Senior Notes 4.375 Percent due 2021
Debt Instrument [Line Items]
Debt (inclusive of discount)	500,000			500,000
Unamortized Deferred Financing Costs	(2,436)			(4,155)
Total Long-term Debt (including current portion)	497,564			495,845
Fair Value	$ 503,450			488,750
Stated interest rate (as a percent)	4.375%	4.375%
Senior Notes 6 Percent Due 2023
Debt Instrument [Line Items]
Debt (inclusive of discount)	$ 600,000			600,000
Unamortized Deferred Financing Costs	(4,027)			(5,126)
Total Long-term Debt (including current portion)	595,973			594,874
Fair Value	$ 613,500			606,000
Stated interest rate (as a percent)	6.00%	6.00%
CAD 5.375 Percent Senior Notes due 2023
Debt Instrument [Line Items]
Debt (inclusive of discount)	$ 192,058			183,403
Unamortized Deferred Financing Costs	(2,071)			(2,506)
Total Long-term Debt (including current portion)	189,987			180,897
Fair Value	$ 199,380			186,154
Stated interest rate (as a percent)	5.375%	5.375%
Senior Subordinated Notes 5.75 Percent due 2024
Debt Instrument [Line Items]
Debt (inclusive of discount)	$ 1,000,000			1,000,000
Unamortized Deferred Financing Costs	(6,409)			(7,782)
Total Long-term Debt (including current portion)	993,591			992,218
Fair Value	$ 1,010,625			940,000
Stated interest rate (as a percent)	5.75%	5.75%
Euro Senior Notes 3 Percent due 2025
Debt Instrument [Line Items]
Debt (inclusive of discount)	$ 336,468			343,347
Unamortized Deferred Financing Costs	(3,462)			(4,098)
Total Long-term Debt (including current portion)	333,006			339,249
Fair Value	$ 345,660			321,029
Stated interest rate (as a percent)	3.00%	3.00%
GBP Senior Notes 3.875 Percent due 2025
Debt Instrument [Line Items]
Debt (inclusive of discount)	$ 527,432			509,425
Unamortized Deferred Financing Costs	(5,809)			(6,573)
Total Long-term Debt (including current portion)	521,623			502,852
Fair Value	$ 539,892			453,811
Stated interest rate (as a percent)	3.875%	3.875%
Senior Notes 5.375 Percent due 2026
Debt Instrument [Line Items]
Debt (inclusive of discount)	$ 250,000			250,000
Unamortized Deferred Financing Costs	(2,756)			(3,185)
Total Long-term Debt (including current portion)	247,244			246,815
Fair Value	$ 261,641			224,375
Stated interest rate (as a percent)	5.375%	5.375%
Senior Notes 4.875 Percent due 2027
Debt Instrument [Line Items]
Debt (inclusive of discount)	$ 1,000,000			1,000,000			$ 1,000,000
Unamortized Deferred Financing Costs	(11,020)			(12,442)
Total Long-term Debt (including current portion)	988,980			987,558
Fair Value	$ 1,029,475			855,000
Stated interest rate (as a percent)	4.875%	4.875%
Senior Notes 4.875 Percent due 2029
Debt Instrument [Line Items]
Debt (inclusive of discount)	$ 825,000			825,000
Unamortized Deferred Financing Costs	(9,742)			(10,923)
Total Long-term Debt (including current portion)	815,258			814,077
Fair Value	$ 859,598			713,625
Stated interest rate (as a percent)	5.25%	5.25%
Senior Notes 4.875 Percent due 2029
Debt Instrument [Line Items]
Debt (inclusive of discount)	$ 1,000,000		$ 1,000,000	0
Unamortized Deferred Financing Costs	(14,104)			0
Total Long-term Debt (including current portion)	985,896			0
Fair Value	$ 1,015,640			0
Stated interest rate (as a percent)	4.875%	4.875%
Real Estate Mortgages, Capital Leases and Other
Debt Instrument [Line Items]
Debt (inclusive of discount)	$ 523,671			606,702
Unamortized Deferred Financing Costs	(406)			(171)
Total Long-term Debt (including current portion)	523,265			606,531
Fair Value	523,671			606,702
Accounts Receivable Securitization Program
Debt Instrument [Line Items]
Debt (inclusive of discount)	272,062			221,673
Unamortized Deferred Financing Costs	(81)			(218)
Total Long-term Debt (including current portion)	271,981			221,455
Fair Value	272,062			221,673
Mortgage Securitization Program
Debt Instrument [Line Items]
Debt (inclusive of discount)	50,000			50,000
Unamortized Deferred Financing Costs	(982)			(1,128)
Total Long-term Debt (including current portion)	49,018			48,872
Fair Value	$ 50,000			50,000
Credit Agreement
Debt Instrument [Line Items]
Capital stock of subsidiaries pledged to secure debt (as a percent)	66.00%	66.00%
Mortgages
Debt Instrument [Line Items]
Total Long-term Debt (including current portion)	$ 27,036			$ 18,576
Stated interest rate (as a percent)	3.90%	3.90%		4.10%	4.10%
Capital Lease Obligations
Debt Instrument [Line Items]
Weighted average interest rate (as a percent)	5.70%	5.70%		5.70%	5.70%
Other Notes And Obligations
Debt Instrument [Line Items]
Total Long-term Debt (including current portion)	$ 129,453			$ 140,953
Weighted average interest rate (as a percent)	10.80%	10.80%		11.10%	11.10%

Debt - New Credit Agreement Nar

Debt - New Credit Agreement Narrative (Details) € in Thousands, $ in Thousands, $ in Thousands	Jun. 04, 2018	Aug. 21, 2017USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2019EUR (€)	Dec. 31, 2019CAD ($)	Dec. 31, 2018USD ($)	Mar. 26, 2018	Mar. 22, 2018USD ($)
Debt Instrument [Line Items]
Debt			$ 8,751,544			$ 8,229,430
New Credit Agreement
Debt Instrument [Line Items]
Average interest rate			3.30%	3.30%	3.30%
Revolving Credit Facility
Debt Instrument [Line Items]
Letters of credit outstanding			$ 4,853
Period of earnings before interest, taxes, depreciation, amortization and rent expense (EBITDAR) for calculation of remaining borrowing capacity			12 months
Remaining amount available for borrowing under credit facility			$ 1,396,339
Revolving Credit Facility | New Credit Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 1,750,000
Debt			$ 348,808			793,832
Optional additional commitments		500,000						$ 1,260,000
Reduction in interest rate	0.25%
Average interest rate			3.20%	3.20%	3.20%
Term Loan Facility | New Credit Agreement
Debt Instrument [Line Items]
Debt		250,000
Amount of quarterly installments based on the original principal		$ 3,125
Term Loan Facility | Term Loan A
Debt Instrument [Line Items]
Debt			$ 228,125			240,625
Average interest rate			3.50%	3.50%	3.50%
Term Loan Facility | Term Loan B
Debt Instrument [Line Items]
Debt			$ 686,395			$ 693,169
USD | Term Loan Facility | New Credit Agreement
Debt Instrument [Line Items]
Carrying amount on long-term debt			$ 257,800
CAD | Term Loan Facility | New Credit Agreement
Debt Instrument [Line Items]
Debt					$ 44,300
Euro | Term Loan Facility | New Credit Agreement
Debt Instrument [Line Items]
Debt | €				€ 50,800
Minimum | New Credit Agreement
Debt Instrument [Line Items]
Commitment fee percentage			0.25%
Maximum | New Credit Agreement
Debt Instrument [Line Items]
Commitment fee percentage			0.40%
Term Loan Facility | Loans Payable | Term Loan B
Debt Instrument [Line Items]
Maximum borrowing capacity								$ 700,000
Par							99.75%
Proceeds from issuance of debt			$ 689,850
Quarterly payment amount			$ 1,750
Stated interest rate (as a percent)			3.60%	3.60%	3.60%			1.75%

Debt - Notes Issued Under Inden

Debt - Notes Issued Under Indentures Narrative (Details)	1 Months Ended								3 Months Ended		12 Months Ended
	Sep. 30, 2019USD ($)	Dec. 31, 2017USD ($)	Nov. 30, 2017USD ($)	Nov. 30, 2017GBP (£)	Sep. 30, 2017USD ($)	Aug. 31, 2017USD ($)	May 30, 2017USD ($)	May 30, 2017EUR (€)	Dec. 31, 2017USD ($)	Sep. 30, 2017USD ($)	Dec. 31, 2019USD ($)debt_instrument	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2019EUR (€)debt_instrument	Dec. 31, 2019CAD ($)debt_instrument	Dec. 31, 2019GBP (£)debt_instrument	Aug. 31, 2017CAD ($)	May 31, 2017EUR (€)
Debt Instrument [Line Items]
Number of series of subordinated notes | debt_instrument											10			10	10	10
Debt (inclusive of discount)											$ 8,751,544,000	$ 8,229,430,000
Long-term debt											8,664,579,000	8,142,823,000
Net proceeds from sales of senior notes											$ 987,500,000	0	$ 2,656,948,000
Redemption price, percentage											100.00%
Senior Notes 4.375 Percent due 2021
Debt Instrument [Line Items]
Principal Amount											$ 500,000,000
Stated interest rate (as a percent)											4.375%			4.375%	4.375%	4.375%
Debt (inclusive of discount)											$ 500,000,000	500,000,000
Long-term debt											497,564,000	495,845,000
Senior Notes 6 Percent Due 2023
Debt Instrument [Line Items]
Principal Amount											$ 600,000,000
Stated interest rate (as a percent)											6.00%			6.00%	6.00%	6.00%
Debt (inclusive of discount)											$ 600,000,000	600,000,000
Long-term debt											$ 595,973,000	594,874,000
CAD 5.375 Percent Senior Notes due 2023
Debt Instrument [Line Items]
Principal Amount															$ 250,000,000
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]
Principal Amount											$ 1,000,000,000
Stated interest rate (as a percent)											4.875%			4.875%	4.875%	4.875%
Debt (inclusive of discount)					$ 1,000,000,000					$ 1,000,000,000	$ 1,000,000,000	1,000,000,000
Long-term debt											$ 988,980,000	987,558,000
Net proceeds from sales of senior notes					987,500,000
Senior Subordinated Notes 5.75 Percent due 2024
Debt Instrument [Line Items]
Stated interest rate (as a percent)											5.75%			5.75%	5.75%	5.75%
Debt (inclusive of discount)											$ 1,000,000,000	1,000,000,000
Long-term debt											$ 993,591,000	992,218,000
Euro Notes 3 Percent due 2025
Debt Instrument [Line Items]
Principal Amount | €														€ 300,000,000
Stated interest rate (as a percent)											3.00%			3.00%	3.00%	3.00%
Debt (inclusive of discount) | €																		€ 300,000,000
Net proceeds from sales of senior notes							$ 332,683,000	€ 296,250,000
GBP Notes due 2025 3.875 Percent
Debt Instrument [Line Items]
Principal Amount | £																£ 400,000,000
Stated interest rate (as a percent)											3.875%			3.875%	3.875%	3.875%
Debt (inclusive of discount) | £				£ 400,000,000
Net proceeds from sales of senior notes			$ 522,077,000	£ 395,000,000
Par				100.00%
Senior Notes 5.375 Percent due 2026
Debt Instrument [Line Items]
Principal Amount											$ 250,000,000
Stated interest rate (as a percent)											5.375%			5.375%	5.375%	5.375%
Debt (inclusive of discount)											$ 250,000,000	250,000,000
Long-term debt											247,244,000	246,815,000
Senior Notes due 2028 5.25 Percent
Debt Instrument [Line Items]
Principal Amount											$ 825,000,000
Stated interest rate (as a percent)											5.25%			5.25%	5.25%	5.25%
Debt (inclusive of discount)		$ 825,000,000							$ 825,000,000				$ 825,000,000
Net proceeds from sales of senior notes		$ 814,688,000
Senior Notes 4.875 Percent due 2029
Debt Instrument [Line Items]
Principal Amount											$ 1,000,000,000
Stated interest rate (as a percent)											4.875%			4.875%	4.875%	4.875%
Debt (inclusive of discount)	$ 1,000,000,000										$ 1,000,000,000	0
Long-term debt											$ 985,896,000	$ 0
Net proceeds from sales of senior notes	$ 987,500,000
GBP Senior Notes 6.125% Due 2022
Debt Instrument [Line Items]
Redemption price, percentage			104.594%	104.594%
Aggregate principal amount outstanding									$ 30,056,000
CAD Notes
Debt Instrument [Line Items]
Long-term debt						$ 157,458,000											$ 200,000,000
Redemption price, percentage						103.063%
Aggregate principal amount outstanding										6,354,000
CAD 6 Percent Senior Notes Due 2020
Debt Instrument [Line Items]
Long-term debt					$ 1,000,000,000					1,000,000,000
Senior Notes 6 Percent Due 2020
Debt Instrument [Line Items]
Redemption price, percentage					103.155%
Aggregate principal amount outstanding										$ 41,738,000
Parent
Debt Instrument [Line Items]
Number of series of subordinated notes | debt_instrument											7			7	7	7
IM US Holdings
Debt Instrument [Line Items]
Number of series of subordinated notes | debt_instrument											1			1	1	1
Canada Company
Debt Instrument [Line Items]
Number of series of subordinated notes | debt_instrument											1			1	1	1
Iron Mountain Europe
Debt Instrument [Line Items]
Number of series of subordinated notes | debt_instrument											1			1	1	1

Debt - Redemption Rates (Detail

Debt - Redemption Rates (Details)	12 Months Ended
	Dec. 31, 2019
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Repurchase price in the event of change of control, percentage of principal plus accrued and unpaid interest	101.00%
Senior Notes 4.375 Percent due 2021 | Redemption date 2019
Debt Instrument [Line Items]
Redemption price, percentage	101.094%
Senior Notes 4.375 Percent due 2021 | Redemption date 2020
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Notes 4.375 Percent due 2021 | Redemption date 2021
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Notes 6 Percent Due 2023 | Redemption date 2019
Debt Instrument [Line Items]
Redemption price, percentage	102.00%
Senior Notes 6 Percent Due 2023 | Redemption date 2020
Debt Instrument [Line Items]
Redemption price, percentage	101.00%
Senior Notes 6 Percent Due 2023 | Redemption date 2021
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Notes 6 Percent Due 2023 | Redemption date 2022
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Notes 6 Percent Due 2023 | Redemption date 2023
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
CAD 5.375 Percent Senior Notes due 2023 | Redemption date 2019
Debt Instrument [Line Items]
Redemption price, percentage	104.031%
CAD 5.375 Percent Senior Notes due 2023 | Redemption date 2020
Debt Instrument [Line Items]
Redemption price, percentage	102.688%
CAD 5.375 Percent Senior Notes due 2023 | Redemption date 2021
Debt Instrument [Line Items]
Redemption price, percentage	101.344%
CAD 5.375 Percent Senior Notes due 2023 | Redemption date 2022
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
CAD 5.375 Percent Senior Notes due 2023 | Redemption date 2023
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Subordinated Notes 5.75 Percent due 2024 | Redemption date 2019
Debt Instrument [Line Items]
Redemption price, percentage	100.958%
Senior Subordinated Notes 5.75 Percent due 2024 | Redemption date 2020
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Subordinated Notes 5.75 Percent due 2024 | Redemption date 2021
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Subordinated Notes 5.75 Percent due 2024 | Redemption date 2022
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Subordinated Notes 5.75 Percent due 2024 | Redemption date 2023
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Subordinated Notes 5.75 Percent due 2024 | Redemption date 2024
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Euro Notes 3 Percent due 2025 | Redemption date 2020
Debt Instrument [Line Items]
Redemption price, percentage	101.50%
Euro Notes 3 Percent due 2025 | Redemption date 2021
Debt Instrument [Line Items]
Redemption price, percentage	100.75%
Euro Notes 3 Percent due 2025 | Redemption date 2022
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Euro Notes 3 Percent due 2025 | Redemption date 2023
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Euro Notes 3 Percent due 2025 | Redemption date 2024
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Euro Notes 3 Percent due 2025 | Redemption date 2025
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
GBP Notes due 2025 3.875 Percent | Redemption date 2020
Debt Instrument [Line Items]
Redemption price, percentage	101.938%
GBP Notes due 2025 3.875 Percent | Redemption date 2021
Debt Instrument [Line Items]
Redemption price, percentage	100.969%
GBP Notes due 2025 3.875 Percent | Redemption date 2022
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
GBP Notes due 2025 3.875 Percent | Redemption date 2023
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
GBP Notes due 2025 3.875 Percent | Redemption date 2024
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
GBP Notes due 2025 3.875 Percent | Redemption date 2025
Debt Instrument [Line Items]
Redemption price, percentage	100000.00%
Senior Notes 5.375 Percent due 2026 | Redemption date 2021
Debt Instrument [Line Items]
Redemption price, percentage	102.688%
Senior Notes 5.375 Percent due 2026 | Redemption date 2022
Debt Instrument [Line Items]
Redemption price, percentage	101.792%
Senior Notes 5.375 Percent due 2026 | Redemption date 2023
Debt Instrument [Line Items]
Redemption price, percentage	100.896%
Senior Notes 5.375 Percent due 2026 | Redemption date 2024
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Notes 5.375 Percent due 2026 | Redemption date 2025
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Notes 5.375 Percent due 2026 | Redemption date 2026
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Notes 4.875 Percent due 2027 | Redemption date 2022
Debt Instrument [Line Items]
Redemption price, percentage	102.438%
Senior Notes 4.875 Percent due 2027 | Redemption date 2023
Debt Instrument [Line Items]
Redemption price, percentage	101.625%
Senior Notes 4.875 Percent due 2027 | Redemption date 2024
Debt Instrument [Line Items]
Redemption price, percentage	100.813%
Senior Notes 4.875 Percent due 2027 | Redemption date 2025
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Notes 4.875 Percent due 2027 | Redemption date 2026
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Notes 4.875 Percent due 2027 | Redemption date 2027
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Notes due 2028 5.25 Percent | Redemption date 2022
Debt Instrument [Line Items]
Redemption price, percentage	102.625%
Senior Notes due 2028 5.25 Percent | Redemption date 2023
Debt Instrument [Line Items]
Redemption price, percentage	101.75%
Senior Notes due 2028 5.25 Percent | Redemption date 2024
Debt Instrument [Line Items]
Redemption price, percentage	100.875%
Senior Notes due 2028 5.25 Percent | Redemption date 2025
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Notes due 2028 5.25 Percent | Redemption date 2026
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Notes due 2028 5.25 Percent | Redemption date 2027
Debt Instrument [Line Items]
Redemption price, percentage	100000.00%
Senior Notes due 2028 5.25 Percent | Redemption date 2028
Debt Instrument [Line Items]
Redemption price, percentage	100000.00%
Senior Notes 4.875 Percent due 2029 | Redemption date 2024
Debt Instrument [Line Items]
Redemption price, percentage	102.438%
Senior Notes 4.875 Percent due 2029 | Redemption date 2025
Debt Instrument [Line Items]
Redemption price, percentage	101.609%
Senior Notes 4.875 Percent due 2029 | Redemption date 2026
Debt Instrument [Line Items]
Redemption price, percentage	100.814%
Senior Notes 4.875 Percent due 2029 | Redemption date 2027
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Notes 4.875 Percent due 2029 | Redemption date 2028
Debt Instrument [Line Items]
Redemption price, percentage	100.00%
Senior Notes 4.875 Percent due 2029 | Redemption date 2029
Debt Instrument [Line Items]
Redemption price, percentage	100.00%

Debt - Australian Dollar Term L

Debt - Australian Dollar Term Loan (Details) $ in Thousands, $ in Thousands	Mar. 29, 2018USD ($)	Mar. 29, 2018AUD ($)	Mar. 27, 2018AUD ($)	Sep. 28, 2016AUD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2019AUD ($)	Dec. 31, 2018AUD ($)
Debt Instrument [Line Items]
Debt (inclusive of discount)					$ 8,751,544	$ 8,229,430
Net proceeds from sales of senior notes					987,500	0	$ 2,656,948
Australian Dollar Term Loan
Debt Instrument [Line Items]
Debt (inclusive of discount)			$ 350,000	$ 250,000	226,924	233,955
Amount of quarterly installments based on the original principal			$ 8,750	$ 6,250
Par	99.00%	99.00%
Net proceeds from sales of senior notes	$ 75,600	$ 99,000
Fair Value					$ 228,156	$ 235,645		$ 325,313	$ 334,063
Effective interest rate (as a percent)					4.80%	6.00%		4.80%	6.00%
Australian Dollar Term Loan | BBSY
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			3.875%	4.30%

Debt - UK Bilateral Revolving C

Debt - UK Bilateral Revolving Credit Facility (Details) - Revolving Credit Facility - UK Bilateral Revolving Credit Facility $ in Thousands	Sep. 24, 2018USD ($)	Sep. 24, 2018GBP (£)	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Maximum borrowing capacity		£ 140,000,000
Optional additional commitments		125,000,000
Proceeds from lines of credit	$ 180,300	£ 138,250,000
Debt instrument, basis spread on variable rate	2.25%	2.25%
Effective interest rate (as a percent)			3.10%	3.10%

Debt - Accounts Receivable and

Debt - Accounts Receivable and Mortgage Securitization Program Narrative (Details) - Secured Debt - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Jul. 31, 2017	Oct. 31, 2016	Mar. 31, 2015
Accounts Receivable Securitization Program
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 275,000,000		$ 250,000,000
Line of credit	$ 272,062,000	$ 221,673,000
Effective interest rate (as a percent)	2.80%	3.00%
Commitment fee percentage	4.00%
Mortgage Securitization Program
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 50,000,000
Line of credit	$ 50,000,000	$ 50,000,000
Effective interest rate (as a percent)	3.50%	3.50%

Debt - Cash Pooling (Details)

Debt - Cash Pooling (Details)	3 Months Ended	12 Months Ended
	Jun. 30, 2017USD ($)	Dec. 31, 2019USD ($)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	$ 10,000,000	$ 372,100,000	$ 300,800,000
Outstanding Debit Balances		(369,000,000)	(298,800,000)
Net Cash Position		3,100,000	2,000,000
TRS Cash Pool
Debt Instrument [Line Items]
Gross Cash Position		319,800,000	281,500,000
Outstanding Debit Balances		(301,300,000)	(279,300,000)
Net Cash Position		$ 18,500,000	$ 2,200,000

Debt - Covenant Ratios (Details

Debt - Covenant Ratios (Details) $ in Thousands	Dec. 31, 2019USD ($)	Dec. 31, 2018
Credit Agreement
Debt Instrument [Line Items]
Letters of credit outstanding	$ 35,251
Net total lease adjusted leverage ratio	5.7	5.6
Net secured debt lease adjusted leverage ratio	2.3	2.6
Bond leverage ratio (not lease adjusted)	5.9	5.8
Fixed charge coverage ratio	2.2	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	$ 4,853
Senior And Senior Subordinated Notes
Debt Instrument [Line Items]
Maximum allowable leverage ratio under indentures pertaining to senior and senior subordinated notes	6.5
GBP Notes due 2025, Senior Notes 4.785 due 2027, Senior Notes 5.25 Notes and Senior Notes 4.785 due 2029
Debt Instrument [Line Items]
Maximum allowable leverage ratio under indentures pertaining to senior and senior subordinated notes	7

Debt - Maturities of Long Term

Debt - Maturities of Long Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
2020	$ 389,013
2021	608,584
2022	487,601
2023	1,384,684
2024	1,036,688
Thereafter	4,847,561
Long-term Debt, Excluding Unamortized (Discount) Premium and Debt Issuance Costs, and Current Maturities	8,754,131
Net Discounts	(2,587)
Net Deferred Financing Costs	(86,965)	$ (86,607)
Total Long-term Debt (including current portion)	$ 8,664,579	$ 8,142,823

Selected Consolidated Financi_3

Selected Consolidated Financial Statements of Parent, Guarantors, and Non-Guarantors - Additional Information (Details)	Dec. 31, 2019
Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors [Abstract]
Ownership percentage of subsidiaries	100.00%

Selected Consolidated Financi_4

Selected Consolidated Financial Statements of Parent, Guarantors, and Non-Guarantors - Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current Assets:
Cash and cash equivalents	$ 193,555		$ 165,485
Accounts receivable	850,701		846,889
Intercompany receivable	0		0
Prepaid expenses and other	192,083		195,740
Total Current Assets	1,236,339		1,208,114
Property, Plant and Equipment, Net	4,623,037
Property, Plant and Equipment, Net			4,489,557
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	0		0
Investment in subsidiaries	0		0
Goodwill	4,485,209		4,441,030
Operating lease right-of-use assets	1,869,101	$ 1,825,721	0
Other	1,603,130		1,718,517
Total Other Assets, Net	7,957,440		6,159,547
Total Assets	13,816,816		11,857,218	$ 10,975,387
LIABILITIES AND EQUITY
Intercompany Payable	0		0
Debit Balances Under Cash Pool	0		0
Current Portion of Long-term Debt	389,013		126,406
Total Other Current Liabilities (includes current portion of operating lease liabilities)	1,560,496		1,364,369
Long-term Debt, Net of Current Portion	8,275,566		8,016,417
Long-Term Operating Lease Liabilities, Net of Current Portion	1,728,686	$ 1,685,771	0
Long-term Notes Payable to Affiliates and Intercompany Payable	0		0
Other Long-term Liabilities	331,146		417,031
Commitments and Contingencies (see Note 10)
Redeemable Noncontrolling Interests (see Note 2.v.)	67,682		70,532
Total Iron Mountain Incorporated Stockholders' Equity	1,463,962		1,861,054
Noncontrolling Interests	265		1,409
Total Equity	1,464,227		1,862,463	$ 2,285,134	$ 1,936,671
Total Liabilities and Equity	13,816,816		11,857,218
Eliminations
Current Assets:
Cash and cash equivalents	(176,705)		(67,372)
Accounts receivable	0		0
Intercompany receivable	(658,580)		(821,324)
Prepaid expenses and other	(29)		(29)
Total Current Assets	(835,314)		(888,725)
Property, Plant and Equipment, Net	0
Property, Plant and Equipment, Net			0
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	(5,347,774)		(4,954,686)
Investment in subsidiaries	(3,030,156)		(2,845,066)
Goodwill	0		0
Operating lease right-of-use assets	0
Other	0		0
Total Other Assets, Net	(8,377,930)		(7,799,752)
Total Assets	(9,213,244)		(8,688,477)
LIABILITIES AND EQUITY
Intercompany Payable	(658,580)		(821,324)
Debit Balances Under Cash Pool	(176,705)		(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	(5,347,774)		(4,954,686)
Other Long-term Liabilities	0		0
Redeemable Noncontrolling Interests (see Note 2.v.)	0		0
Total Iron Mountain Incorporated Stockholders' Equity	(3,030,156)		(2,845,066)
Noncontrolling Interests	0		0
Total Equity	(3,030,156)		(2,845,066)
Total Liabilities and Equity	(9,213,244)		(8,688,477)
Parent | Reportable legal entities
Current Assets:
Cash and cash equivalents	105		132
Accounts receivable	0		0
Intercompany receivable	0		0
Prepaid expenses and other	0		93
Total Current Assets	105		225
Property, Plant and Equipment, Net	597
Property, Plant and Equipment, Net			190
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	5,347,774		4,954,686
Investment in subsidiaries	1,966,978		1,862,048
Goodwill	0		0
Operating lease right-of-use assets	0
Other	0		0
Total Other Assets, Net	7,314,752		6,816,734
Total Assets	7,315,454		6,817,149
LIABILITIES AND EQUITY
Intercompany Payable	338,794		462,927
Debit Balances Under Cash Pool	0		0
Current Portion of Long-term Debt	0		0
Total Other Current Liabilities (includes current portion of operating lease liabilities)	292,673		268,373
Long-term Debt, Net of Current Portion	5,210,269		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	9,756		973
Redeemable Noncontrolling Interests (see Note 2.v.)	0		0
Total Iron Mountain Incorporated Stockholders' Equity	1,463,962		1,861,054
Noncontrolling Interests	0		0
Total Equity	1,463,962		1,861,054
Total Liabilities and Equity	7,315,454		6,817,149
Guarantors
LIABILITIES AND EQUITY
Deposits	198,300		58,900
Guarantors | Reportable legal entities
Current Assets:
Cash and cash equivalents	206,297		63,407
Accounts receivable	45,608		47,472
Intercompany receivable	658,580		821,324
Prepaid expenses and other	104,164		109,480
Total Current Assets	1,014,649		1,041,683
Property, Plant and Equipment, Net	3,051,426
Property, Plant and Equipment, Net			3,010,767
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	0		0
Investment in subsidiaries	1,063,178		983,018
Goodwill	2,855,424		2,861,381
Operating lease right-of-use assets	986,362
Other	911,803		982,932
Total Other Assets, Net	5,816,767		4,827,331
Total Assets	9,882,842		8,879,781
LIABILITIES AND EQUITY
Intercompany Payable	0		0
Debit Balances Under Cash Pool	0		10,612
Current Portion of Long-term Debt	51,868		63,859
Total Other Current Liabilities (includes current portion of operating lease liabilities)	704,109		618,513
Long-term Debt, Net of Current Portion	1,482,571		1,878,079
Long-Term Operating Lease Liabilities, Net of Current Portion	915,840
Long-term Notes Payable to Affiliates and Intercompany Payable	5,347,774		4,954,686
Other Long-term Liabilities	62,525		116,895
Redeemable Noncontrolling Interests (see Note 2.v.)	0		0
Total Iron Mountain Incorporated Stockholders' Equity	1,318,155		1,237,137
Noncontrolling Interests	0		0
Total Equity	1,318,155		1,237,137
Total Liabilities and Equity	9,882,842		8,879,781
Non-Guarantor Subsidiaries
LIABILITIES AND EQUITY
Deposits	0		12,700
Non-Guarantor Subsidiaries | Reportable legal entities
Current Assets:
Cash and cash equivalents	163,858		169,318
Accounts receivable	805,093		799,417
Intercompany receivable	0		0
Prepaid expenses and other	87,948		86,196
Total Current Assets	1,056,899		1,054,931
Property, Plant and Equipment, Net	1,571,014
Property, Plant and Equipment, Net			1,478,600
Other Assets, Net:
Long-term notes receivable from affiliates and intercompany receivable	0		0
Investment in subsidiaries	0		0
Goodwill	1,629,785		1,579,649
Operating lease right-of-use assets	882,739
Other	691,327		735,585
Total Other Assets, Net	3,203,851		2,315,234
Total Assets	5,831,764		4,848,765
LIABILITIES AND EQUITY
Intercompany Payable	319,786		358,397
Debit Balances Under Cash Pool	176,705		56,760
Current Portion of Long-term Debt	337,174		62,576
Total Other Current Liabilities (includes current portion of operating lease liabilities)	563,714		477,483
Long-term Debt, Net of Current Portion	1,582,726		1,914,516
Long-Term Operating Lease Liabilities, Net of Current Portion	812,846
Long-term Notes Payable to Affiliates and Intercompany Payable	0		0
Other Long-term Liabilities	258,865		299,163
Redeemable Noncontrolling Interests (see Note 2.v.)	67,682		70,532
Total Iron Mountain Incorporated Stockholders' Equity	1,712,001		1,607,929
Noncontrolling Interests	265		1,409
Total Equity	1,712,266		1,609,338
Total Liabilities and Equity	$ 5,831,764		$ 4,848,765

Selected Consolidated Financi_5

Selected Consolidated Financial Statements of Parent, Guarantors, and Non-Guarantors - Consolidated Statement of Operations and Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	Oct. 01, 2017	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues:
Storage rental										$ 2,681,087
Intercompany revenues										0	$ 0	$ 0
Revenues						$ 1,061,489	$ 1,060,991	$ 1,060,823	$ 1,042,458		4,225,761	3,845,578
Total Revenues		$ 1,079,590	$ 1,062,224	$ 1,066,907	$ 1,053,863					4,262,584
Operating Expenses:
Cost of sales (excluding depreciation and amortization)										1,833,315	1,793,954	1,664,825
Intercompany cost of sales										0	0	0
Selling, general and administrative										991,664	1,006,983	937,180
Depreciation and amortization										658,201	639,514	522,376
Significant Acquisition Costs										13,293	50,665	84,901
Intangible impairments	$ 3,011									0	0	3,011
Restructuring Charges		48,600								48,597	0	0
(Gain) Loss on disposal/write-down of property, plant and equipment, net										(63,824)	(73,622)	(766)
Total Operating Expenses										3,481,246	3,417,494	3,211,527
Operating (Loss) Income		206,074	223,474	193,115	158,675	254,053	195,635	201,460	157,119	781,338	808,267	634,051
Interest Expense (Income), Net										419,298	409,648	353,645
Other Expense (Income), Net										33,898	(11,692)	79,429
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes										328,142	410,311	200,977
Provision (Benefit) for Income Taxes										59,931	42,753	22,962
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax										0	0	0
Income (Loss) from Continuing Operations		37,104	108,284	92,347	30,476	158,557	77,349	92,263	39,389	268,211	367,558	178,015
Income (Loss) from Discontinued Operations, Net of Tax		0	0	128	(24)	0	(11,605)	(360)	(462)	104	(12,427)	(6,291)
Net Income (Loss)		37,104	108,284	92,475	30,452	158,557	65,744	91,903	38,927	268,315	355,131	171,724
Less: Net Income (Loss) Attributable to Noncontrolling Interests										938	1,198	1,611
Net Income (Loss) Attributable to Iron Mountain Incorporated		37,700	107,675	92,441	29,561	157,844	65,869	91,761	38,459	267,377	353,933	170,113
Net Income (Loss)		$ 37,104	$ 108,284	$ 92,475	$ 30,452	$ 158,557	$ 65,744	$ 91,903	$ 38,927	268,315	355,131	171,724
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustment										11,994	(164,107)	108,564
Change in Fair Value of Derivative Instruments										(8,783)	(973)
Equity in Other Comprehensive (Loss) Income of Subsidiaries										0	0	0
Total Other Comprehensive Income (Loss)										3,211	(165,080)	108,564
Comprehensive Income (Loss)										271,526	190,051	280,288
Comprehensive Income (Loss) Attributable to Noncontrolling Interests										1,066	(2,207)	1,591
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated										270,460	192,258	278,697
Eliminations
Revenues:
Storage rental										0
Intercompany revenues										(24,901)	(23,198)	(29,190)
Revenues											(23,198)	(29,190)
Total Revenues										(24,901)
Operating Expenses:
Cost of sales (excluding depreciation and amortization)										0	0	0
Intercompany cost of sales										(24,901)	(23,198)	(29,190)
Selling, general and administrative										0	0	0
Depreciation and amortization										0	0	0
Significant Acquisition Costs										0	0	0
Intangible impairments												0
Restructuring Charges										0
(Gain) Loss on disposal/write-down of property, plant and equipment, net										0	0	0
Total Operating Expenses										(24,901)	(23,198)	(29,190)
Operating (Loss) Income										0	0	0
Interest Expense (Income), Net										0	0	0
Other Expense (Income), Net										0	0	0
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes										0	0	0
Provision (Benefit) for Income Taxes										0	0	0
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax										545,610	703,625	392,835
Income (Loss) from Continuing Operations										(545,610)	(703,625)	(392,835)
Income (Loss) from Discontinued Operations, Net of Tax										0	0	0
Net Income (Loss)										(545,610)	(703,625)	(392,835)
Less: Net Income (Loss) Attributable to Noncontrolling Interests										0	0	0
Net Income (Loss) Attributable to Iron Mountain Incorporated										(545,610)	(703,625)	(392,835)
Net Income (Loss)										(545,610)	(703,625)	(392,835)
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustment										0	0	0
Change in Fair Value of Derivative Instruments										0	0
Equity in Other Comprehensive (Loss) Income of Subsidiaries										(11,577)	311,743	(205,726)
Total Other Comprehensive Income (Loss)										(11,577)	311,743	(205,726)
Comprehensive Income (Loss)										(557,187)	(391,882)	(598,561)
Comprehensive Income (Loss) Attributable to Noncontrolling Interests										0	0	0
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated										(557,187)	(391,882)	(598,561)
Parent | Reportable legal entities
Revenues:
Storage rental										0
Intercompany revenues										0	0	0
Revenues											0	0
Total Revenues										0
Operating Expenses:
Cost of sales (excluding depreciation and amortization)										0	0	0
Intercompany cost of sales										0	0	0
Selling, general and administrative										444	(288)	161
Depreciation and amortization										91	122	167
Significant Acquisition Costs										0	0	0
Intangible impairments												0
Restructuring Charges										0
(Gain) Loss on disposal/write-down of property, plant and equipment, net										0	0	0
Total Operating Expenses										535	(166)	328
Operating (Loss) Income										(535)	166	(328)
Interest Expense (Income), Net										213,149	199,955	163,541
Other Expense (Income), Net										59	2,328	47,176
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes										(213,743)	(202,117)	(211,045)
Provision (Benefit) for Income Taxes										0	0	0
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax										(481,120)	(556,050)	(381,158)
Income (Loss) from Continuing Operations										267,377	353,933	170,113
Income (Loss) from Discontinued Operations, Net of Tax										0	0	0
Net Income (Loss)										267,377	353,933	170,113
Less: Net Income (Loss) Attributable to Noncontrolling Interests										0	0	0
Net Income (Loss) Attributable to Iron Mountain Incorporated										267,377	353,933	170,113
Net Income (Loss)										267,377	353,933	170,113
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustment										6,003	11,070	(15,015)
Change in Fair Value of Derivative Instruments										(8,783)	(973)
Equity in Other Comprehensive (Loss) Income of Subsidiaries										5,863	(171,772)	123,599
Total Other Comprehensive Income (Loss)										3,083	(161,675)	108,584
Comprehensive Income (Loss)										270,460	192,258	278,697
Comprehensive Income (Loss) Attributable to Noncontrolling Interests										0	0	0
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated										270,460	192,258	278,697
Guarantors | Reportable legal entities
Revenues:
Storage rental										1,654,359
Intercompany revenues										4,668	4,759	4,577
Revenues											2,585,318	2,314,114
Total Revenues										2,637,254
Operating Expenses:
Cost of sales (excluding depreciation and amortization)										1,048,514	1,009,890	922,008
Intercompany cost of sales										20,233	18,439	24,613
Selling, general and administrative										679,964	679,740	613,350
Depreciation and amortization										410,524	404,574	310,962
Significant Acquisition Costs										7,055	35,607	52,621
Intangible impairments												3,011
Restructuring Charges										32,218
(Gain) Loss on disposal/write-down of property, plant and equipment, net										(26,472)	(2,841)	(1,001)
Total Operating Expenses										2,172,036	2,145,409	1,925,564
Operating (Loss) Income										465,218	439,909	388,550
Interest Expense (Income), Net										18,923	6,392	7,606
Other Expense (Income), Net										19,271	17,158	9,178
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes										427,024	416,359	371,766
Provision (Benefit) for Income Taxes										6,698	(1,006)	3,988
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax										(64,490)	(147,575)	(11,677)
Income (Loss) from Continuing Operations										484,816	564,940	379,455
Income (Loss) from Discontinued Operations, Net of Tax										120	(12,283)	(4,370)
Net Income (Loss)										484,936	552,657	375,085
Less: Net Income (Loss) Attributable to Noncontrolling Interests										0	0	0
Net Income (Loss) Attributable to Iron Mountain Incorporated										484,936	552,657	375,085
Net Income (Loss)										484,936	552,657	375,085
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustment										0	0	0
Change in Fair Value of Derivative Instruments										0	0
Equity in Other Comprehensive (Loss) Income of Subsidiaries										5,714	(139,971)	82,127
Total Other Comprehensive Income (Loss)										5,714	(139,971)	82,127
Comprehensive Income (Loss)										490,650	412,686	457,212
Comprehensive Income (Loss) Attributable to Noncontrolling Interests										0	0	0
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated										490,650	412,686	457,212
Non-Guarantor Subsidiaries | Reportable legal entities
Revenues:
Storage rental										1,026,728
Intercompany revenues										20,233	18,439	24,613
Revenues											1,663,641	1,560,654
Total Revenues										1,650,231
Operating Expenses:
Cost of sales (excluding depreciation and amortization)										784,801	784,064	742,817
Intercompany cost of sales										4,668	4,759	4,577
Selling, general and administrative										311,256	327,531	323,669
Depreciation and amortization										247,586	234,818	211,247
Significant Acquisition Costs										6,238	15,058	32,280
Intangible impairments												0
Restructuring Charges										16,379
(Gain) Loss on disposal/write-down of property, plant and equipment, net										(37,352)	(70,781)	235
Total Operating Expenses										1,333,576	1,295,449	1,314,825
Operating (Loss) Income										316,655	368,192	245,829
Interest Expense (Income), Net										187,226	203,301	182,498
Other Expense (Income), Net										14,568	(31,178)	23,075
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes										114,861	196,069	40,256
Provision (Benefit) for Income Taxes										53,233	43,759	18,974
Equity in the (Earnings) Losses of Subsidiaries, Net of Tax										0	0	0
Income (Loss) from Continuing Operations										61,628	152,310	21,282
Income (Loss) from Discontinued Operations, Net of Tax										(16)	(144)	(1,921)
Net Income (Loss)										61,612	152,166	19,361
Less: Net Income (Loss) Attributable to Noncontrolling Interests										938	1,198	1,611
Net Income (Loss) Attributable to Iron Mountain Incorporated										60,674	150,968	17,750
Net Income (Loss)										61,612	152,166	19,361
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustment										5,991	(175,177)	123,579
Change in Fair Value of Derivative Instruments										0	0
Equity in Other Comprehensive (Loss) Income of Subsidiaries										0	0	0
Total Other Comprehensive Income (Loss)										5,991	(175,177)	123,579
Comprehensive Income (Loss)										67,603	(23,011)	142,940
Comprehensive Income (Loss) Attributable to Noncontrolling Interests										1,066	(2,207)	1,591
Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated										66,537	(20,804)	141,349
Storage rental
Revenues:
Revenues											2,622,455	2,377,557
Storage rental | Eliminations
Revenues:
Revenues											0	0
Storage rental | Parent | Reportable legal entities
Revenues:
Revenues											0	0
Storage rental | Guarantors | Reportable legal entities
Revenues:
Revenues											1,606,346	1,443,219
Storage rental | Non-Guarantor Subsidiaries | Reportable legal entities
Revenues:
Revenues											1,016,109	934,338
Service
Revenues:
Revenues										1,581,497	1,603,306	1,468,021
Service | Eliminations
Revenues:
Revenues										0	0	0
Service | Parent | Reportable legal entities
Revenues:
Revenues										0	0	0
Service | Guarantors | Reportable legal entities
Revenues:
Revenues										978,227	974,213	866,318
Service | Non-Guarantor Subsidiaries | Reportable legal entities
Revenues:
Revenues										$ 603,270	$ 629,093	$ 601,703

Selected Consolidated Financi_6

Selected Consolidated Financial Statements of Parent, Guarantors, and Non-Guarantors - Consolidated Statement of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flows from Operating Activities:
Cash Flows from Operating Activities - Continuing Operations	$ 966,655	$ 936,544	$ 724,259
Cash Flows from Operating Activities-Discontinued Operations	0	(995)	(3,291)
Cash Flows from Operating Activities	966,655	935,549	720,968
Cash Flows from Investing Activities:
Capital expenditures	(692,983)	(460,062)	(343,131)
Cash paid for acquisitions, net of cash acquired	(58,237)	(1,758,557)	(219,705)
Intercompany loans to subsidiaries		0
Intercompany loans to subsidiaries	0		0
Investment in subsidiaries			0
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles	(131,647)	(98,687)	(75,185)
Investment in joint ventures	(19,222)	0	0
Net proceeds from Divestments	0	1,019	29,236
Proceeds from sales of property and equipment and other, net (including real estate) and proceeds from involuntary conversion of property and equipment	166,143	86,159	9,337
Cash Flows from Investing Activities-Continuing Operations	(735,946)	(2,230,128)	(599,448)
Cash Flows from Investing Activities-Discontinued Operations	5,061	8,250	0
Cash Flows from Investing Activities	(730,885)	(2,221,878)	(599,448)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(14,535,115)	(14,192,139)	(14,429,695)
Proceeds from revolving credit and term loan facilities and other debt	14,059,818	15,351,614	13,917,055
Early retirement of senior subordinated and senior notes	0	0	(1,746,856)
Net proceeds from sales of senior notes	987,500	0	2,656,948
Debit balances (payments) under cash pools	0	0	0
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net			9,079
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net	(1,924)	(2,523)	(4,151)
Debt financing and equity contribution from noncontrolling interests	0	0	13,230
Intercompany loans from parent	0	0	0
Equity contribution from parent			0
Parent cash dividends	(704,526)	(673,635)	(439,999)
Net proceeds (payments) associated with employee stock-based awards		(1,142)
Net proceeds (payments) associated with employee stock-based awards	1,027		13,095
Net proceeds associated with the Equity Offering, including Over-Allotment Option		76,192	516,462
Net proceeds associated with the At The Market (ATM) Program	0	8,716	59,129
Payment of debt financing and stock issuance costs and other	(5,753)	(16,405)	(14,793)
Cash Flows from Financing Activities-Continuing Operations	(198,973)	550,678	540,425
Cash Flows from Financing Activities-Discontinued Operations	0	0	0
Cash Flows from Financing Activities	(198,973)	550,678	540,425
Effect of exchange rates on cash and cash equivalents	(8,727)	(24,563)	27,270
Increase (decrease) in Cash and Cash Equivalents	28,070	(760,214)	689,215
Cash and cash equivalents, including Restricted Cash, beginning of year	165,485	925,699	236,484
Cash and cash equivalents, including Restricted Cash, end of year	193,555	165,485	925,699
Eliminations
Cash Flows from Operating Activities:
Cash Flows from Operating Activities - Continuing Operations	0	0	0
Cash Flows from Operating Activities-Discontinued Operations	0	0	0
Cash Flows from Operating Activities	0	0	0
Cash Flows from Investing Activities:
Capital expenditures	0	0	0
Cash paid for acquisitions, net of cash acquired	0	0	0
Intercompany loans to subsidiaries		(896,368)
Intercompany loans to subsidiaries	120,260		1,335,554
Investment in subsidiaries			16,170
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles	0	0	0
Investment in joint ventures	0
Net proceeds from Divestments	0	0	0
Proceeds from sales of property and equipment and other, net (including real estate) and proceeds from involuntary conversion of property and equipment	0	0	0
Cash Flows from Investing Activities-Continuing Operations	120,260	(896,368)	1,351,724
Cash Flows from Investing Activities-Discontinued Operations	0	0	0
Cash Flows from Investing Activities	120,260	(896,368)	1,351,724
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	0	0	0
Proceeds from revolving credit and term loan facilities and other debt	0	0	0
Early retirement of senior subordinated and senior notes			0
Net proceeds from sales of senior notes	0		0
Debit balances (payments) under cash pools	(109,333)	27,354	(94,726)
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net			0
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net	0	0
Intercompany loans from parent	(120,260)	896,368	(1,335,554)
Equity contribution from parent			(16,170)
Parent cash dividends	0	0	0
Net proceeds (payments) associated with employee stock-based awards		0
Net proceeds (payments) associated with employee stock-based awards	0		0
Net proceeds associated with the Equity Offering, including Over-Allotment Option		0	0
Net proceeds associated with the At The Market (ATM) Program		0	0
Payment of debt financing and stock issuance costs and other	0	0	0
Cash Flows from Financing Activities-Continuing Operations	(229,593)	923,722	(1,446,450)
Cash Flows from Financing Activities-Discontinued Operations	0	0	0
Cash Flows from Financing Activities	(229,593)	923,722	(1,446,450)
Effect of exchange rates on cash and cash equivalents	0	0	0
Increase (decrease) in Cash and Cash Equivalents	(109,333)	27,354	(94,726)
Cash and cash equivalents, including Restricted Cash, beginning of year	(67,372)	(94,726)	0
Cash and cash equivalents, including Restricted Cash, end of year	(176,705)	(67,372)	(94,726)
Parent | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities - Continuing Operations	(157,162)	(217,819)	(203,403)
Cash Flows from Operating Activities-Discontinued Operations	0	0	0
Cash Flows from Operating Activities	(157,162)	(217,819)	(203,403)
Cash Flows from Investing Activities:
Capital expenditures	0	0	0
Cash paid for acquisitions, net of cash acquired	0	0	0
Intercompany loans to subsidiaries		805,799
Intercompany loans to subsidiaries	(124,897)		(990,635)
Investment in subsidiaries			(16,170)
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles	0	0	0
Investment in joint ventures	0
Net proceeds from Divestments	0	0	0
Proceeds from sales of property and equipment and other, net (including real estate) and proceeds from involuntary conversion of property and equipment	0	0	0
Cash Flows from Investing Activities-Continuing Operations	(124,897)	805,799	(1,006,805)
Cash Flows from Investing Activities-Discontinued Operations	0	0	0
Cash Flows from Investing Activities	(124,897)	805,799	(1,006,805)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	0	0	(262,579)
Proceeds from revolving credit and term loan facilities and other debt	0	0	224,660
Early retirement of senior subordinated and senior notes			(1,031,554)
Net proceeds from sales of senior notes	987,500		2,134,870
Debit balances (payments) under cash pools	0	0	0
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net			0
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net	0	0
Intercompany loans from parent	0	0	0
Equity contribution from parent			0
Parent cash dividends	(704,526)	(673,635)	(439,999)
Net proceeds (payments) associated with employee stock-based awards		(1,142)
Net proceeds (payments) associated with employee stock-based awards	1,027		13,095
Net proceeds associated with the Equity Offering, including Over-Allotment Option		76,192	516,462
Net proceeds associated with the At The Market (ATM) Program		8,716	59,129
Payment of debt financing and stock issuance costs and other	(1,969)	(412)	(3,848)
Cash Flows from Financing Activities-Continuing Operations	282,032	(590,281)	1,210,236
Cash Flows from Financing Activities-Discontinued Operations	0	0	0
Cash Flows from Financing Activities	282,032	(590,281)	1,210,236
Effect of exchange rates on cash and cash equivalents	0	0	0
Increase (decrease) in Cash and Cash Equivalents	(27)	(2,301)	28
Cash and cash equivalents, including Restricted Cash, beginning of year	132	2,433	2,405
Cash and cash equivalents, including Restricted Cash, end of year	105	132	2,433
Guarantors | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities - Continuing Operations	850,840	880,615	737,532
Cash Flows from Operating Activities-Discontinued Operations	0	(995)	(1,345)
Cash Flows from Operating Activities	850,840	879,620	736,187
Cash Flows from Investing Activities:
Capital expenditures	(412,725)	(313,510)	(237,004)
Cash paid for acquisitions, net of cash acquired	(9,508)	(1,338,888)	(96,946)
Intercompany loans to subsidiaries		90,569
Intercompany loans to subsidiaries	4,637		(344,919)
Investment in subsidiaries			0
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles	(99,610)	(76,388)	(63,759)
Investment in joint ventures	(19,222)
Net proceeds from Divestments	0	1,019	0
Proceeds from sales of property and equipment and other, net (including real estate) and proceeds from involuntary conversion of property and equipment	115,775	299	12,963
Cash Flows from Investing Activities-Continuing Operations	(420,653)	(1,636,899)	(729,665)
Cash Flows from Investing Activities-Discontinued Operations	2,564	8,250	0
Cash Flows from Investing Activities	(418,089)	(1,628,649)	(729,665)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(10,479,101)	(7,355,086)	(8,077,553)
Proceeds from revolving credit and term loan facilities and other debt	10,057,145	8,445,551	7,650,436
Early retirement of senior subordinated and senior notes			0
Net proceeds from sales of senior notes	0		0
Debit balances (payments) under cash pools	(10,612)	(45,621)	56,233
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net			0
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net	0	0
Intercompany loans from parent	143,767	(862,425)	992,708
Equity contribution from parent			0
Parent cash dividends	0	0	0
Net proceeds (payments) associated with employee stock-based awards		0
Net proceeds (payments) associated with employee stock-based awards	0		0
Net proceeds associated with the Equity Offering, including Over-Allotment Option		0	0
Net proceeds associated with the At The Market (ATM) Program		0	0
Payment of debt financing and stock issuance costs and other	(1,060)	(12,391)	(9,391)
Cash Flows from Financing Activities-Continuing Operations	(289,861)	170,028	612,433
Cash Flows from Financing Activities-Discontinued Operations	0	0	0
Cash Flows from Financing Activities	(289,861)	170,028	612,433
Effect of exchange rates on cash and cash equivalents	0	0	0
Increase (decrease) in Cash and Cash Equivalents	142,890	(579,001)	618,955
Cash and cash equivalents, including Restricted Cash, beginning of year	63,407	642,408	23,453
Cash and cash equivalents, including Restricted Cash, end of year	206,297	63,407	642,408
Non-Guarantor Subsidiaries | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities - Continuing Operations	272,977	273,748	190,130
Cash Flows from Operating Activities-Discontinued Operations	0	0	(1,946)
Cash Flows from Operating Activities	272,977	273,748	188,184
Cash Flows from Investing Activities:
Capital expenditures	(280,258)	(146,552)	(106,127)
Cash paid for acquisitions, net of cash acquired	(48,729)	(419,669)	(122,759)
Intercompany loans to subsidiaries		0
Intercompany loans to subsidiaries	0		0
Investment in subsidiaries			0
Acquisitions of customer relationships, customer inducements and data center lease-based intangibles	(32,037)	(22,299)	(11,426)
Investment in joint ventures	0
Net proceeds from Divestments	0	0	29,236
Proceeds from sales of property and equipment and other, net (including real estate) and proceeds from involuntary conversion of property and equipment	50,368	85,860	(3,626)
Cash Flows from Investing Activities-Continuing Operations	(310,656)	(502,660)	(214,702)
Cash Flows from Investing Activities-Discontinued Operations	2,497	0	0
Cash Flows from Investing Activities	(308,159)	(502,660)	(214,702)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(4,056,014)	(6,837,053)	(6,089,563)
Proceeds from revolving credit and term loan facilities and other debt	4,002,673	6,906,063	6,041,959
Early retirement of senior subordinated and senior notes			(715,302)
Net proceeds from sales of senior notes	0		522,078
Debit balances (payments) under cash pools	119,945	18,267	38,493
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net			9,079
Debt (repayment to) financing from and equity (distribution to) contribution from noncontrolling interests, net	(1,924)	(2,523)
Intercompany loans from parent	(23,507)	(33,943)	342,846
Equity contribution from parent			16,170
Parent cash dividends	0	0	0
Net proceeds (payments) associated with employee stock-based awards		0
Net proceeds (payments) associated with employee stock-based awards	0		0
Net proceeds associated with the Equity Offering, including Over-Allotment Option		0	0
Net proceeds associated with the At The Market (ATM) Program		0	0
Payment of debt financing and stock issuance costs and other	(2,724)	(3,602)	(1,554)
Cash Flows from Financing Activities-Continuing Operations	38,449	47,209	164,206
Cash Flows from Financing Activities-Discontinued Operations	0	0	0
Cash Flows from Financing Activities	38,449	47,209	164,206
Effect of exchange rates on cash and cash equivalents	(8,727)	(24,563)	27,270
Increase (decrease) in Cash and Cash Equivalents	(5,460)	(206,266)	164,958
Cash and cash equivalents, including Restricted Cash, beginning of year	169,318	375,584	210,626
Cash and cash equivalents, including Restricted Cash, end of year	$ 163,858	$ 169,318	$ 375,584

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) $ / shares in Units, € in Thousands, £ in Thousands, $ in Thousands

May 25, 2018USD ($)

May 25, 2018EUR (€)

Mar. 08, 2018USD ($)data_center

Mar. 08, 2018GBP (£)data_center

Mar. 08, 2018SGD ($)data_center

Jan. 10, 2018USD ($)data_center

Feb. 28, 2019USD ($)

Dec. 31, 2017USD ($)

Sep. 30, 2017USD ($)$ / sharesshares

Sep. 30, 2017GBP (£)shares

Dec. 31, 2019USD ($)company

Dec. 31, 2018USD ($)company

Dec. 31, 2017USD ($)acquisitioncompany

Storage and Data Management Company

Business Acquisition [Line Items]

Number of companies acquired | company

10

11

Storage, Records Management And Art Storage Companies

Business Acquisition [Line Items]

Cash consideration

$ 51,000,000

Storage, Records Management And Art Storage Companies | Maximum

Business Acquisition [Line Items]

Purchase price

12,500,000

Storage, Records Management And Art Storage Companies | Minimum

Business Acquisition [Line Items]

Purchase price

700,000

IO Data Center LLC

Business Acquisition [Line Items]

Cash consideration

$ 1,347,046,000

Purchase price

$ 1,347,000,000

$ 31,000,000

$ 1,347,046,000

Number of data centers | data_center

4

Operating expenditures

$ 28,064

EvoSwitch

Business Acquisition [Line Items]

Cash consideration

$ 222,000,000

€ 189,000

Potential additional payments to be made

$ 25,000,000

Credit Suisse Data Center Acquisition

Business Acquisition [Line Items]

Purchase price

$ 111,400,000

£ 34,600

$ 81,000

Number of data centers | data_center

2

2

2

Art Storage Company

Business Acquisition [Line Items]

Number of companies acquired | company

1

3

1

Other 2018 Individually Immaterial Business Acquisitions

Business Acquisition [Line Items]

Purchase price

$ 98,100,000

Other 2018 Individually Immaterial Business Acquisitions | Maximum

Business Acquisition [Line Items]

Purchase price

34,100,000

Other 2018 Individually Immaterial Business Acquisitions | Minimum

Business Acquisition [Line Items]

Purchase price

$ 1,000,000

Santa Fe China Transaction

Business Acquisition [Line Items]

Purchase price

$ 16,800,000

Bonded Transaction

Business Acquisition [Line Items]

Purchase price

$ 83,000,000

£ 62,000

FORTRUST

Business Acquisition [Line Items]

Cash consideration

54,500,000

Purchase price

$ 137,500,000

Share price (in dollars per share) | $ / shares

$ 37.84

FORTRUST | Common Stock

Business Acquisition [Line Items]

Issuance of common stock (in shares) | shares

2,193,637

2,193,637

Storage and Records Management Company

Business Acquisition [Line Items]

Number of companies acquired | acquisition

12

Other 2017 Individually Immaterial Business Acquisitions

Business Acquisition [Line Items]

Purchase price

$ 98,200,000

Other 2017 Individually Immaterial Business Acquisitions | Maximum

Business Acquisition [Line Items]

Purchase price

28,500,000

Other 2017 Individually Immaterial Business Acquisitions | Minimum

Business Acquisition [Line Items]

Purchase price

$ 100,000

Acquisitions - Pro Forma Financ

Acquisitions - Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Business Combinations [Abstract]
Total Revenues	$ 4,229,251	$ 3,983,016
Income from Continuing Operations	$ 377,510	$ 110,677
Per Share Income from Continuing Operations - Basic (in dollars per share)	$ 1.32	$ 0.39
Per Share Income from Continuing Operations - Diluted (in dollars per share)	$ 1.31	$ 0.39

Acquisitions - Schedule of Purc

Acquisitions - Schedule of Purchase Price Allocation (Details) € in Thousands, $ in Thousands	May 25, 2018USD ($)	May 25, 2018EUR (€)	Jan. 10, 2018USD ($)	Feb. 28, 2019USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Jan. 01, 2019USD ($)
Consideration paid for acquisitions
Accrued Purchase Price and Other Holdbacks (see Note 6)						$ 4,135	$ 35,218	$ 20,093
Fair Value of Identifiable Assets Acquired:
Operating lease right-of-use assets						1,869,101	0		$ 1,825,721
Operating Lease Liabilities						(1,728,686)	0		$ (1,685,771)
Goodwill Initially Recorded						4,485,209	4,441,030
Cash paid for previous acquisition							7,186
Other Acquisitions
Consideration paid for acquisitions
Cash Paid (gross of cash acquired)						53,230	432,078	234,314
Accrued Purchase Price and Other Holdbacks (see Note 6)						4,135	35,218	20,093
Fair Value of Common Stock Issued						0	0	83,014
Fair Value of Noncontrolling Interests					$ 1,507	0	0	1,507
Total Consideration						57,365	467,296	338,928
Fair Value of Identifiable Assets Acquired:
Cash					14,746	2,260	10,227	14,746
Accounts Receivable, Prepaid Expenses and Other Assets					24,379	3,102	17,662	24,379
Property, Plant and Equipment					150,878	5,396	225,848	150,878
Customer Relationship Intangible Assets					116,028	22,071	44,622	116,028
Operating lease right-of-use assets					0	16,956	0	0
Data Center In-Place Leases					6,300	0	36,130	6,300
Data Center Tenant Relationships					0	0	18,410	0
Data Center Above-Market Leases					0	0	2,381	0
Other Intangible Assets					14,487	0	0	14,487
Debt Assumed					(5,287)	0	(12,312)	(5,287)
Accounts Payable, Accrued Expenses and Other Liabilities					(24,869)	(3,233)	(17,206)	(24,869)
Operating Lease Liabilities					0	(16,956)	0	0
Deferred Income Taxes					(18,122)	(1,813)	(43,218)	(18,122)
Data Center Below-Market Leases					0	0	(694)	0
Total Fair Value of Identifiable Net Assets Acquired					278,540	27,783	281,850	278,540
Goodwill Initially Recorded					60,388	29,582	185,446	60,388
Cash acquired from acquisition						2,260	44,534	14,746
Cash paid for previous acquisition						$ 7,267	23,967	137
IO Data Center LLC
Consideration paid for acquisitions
Cash Paid (gross of cash acquired)							1,347,046
Accrued Purchase Price and Other Holdbacks (see Note 6)							0
Fair Value of Common Stock Issued							0
Fair Value of Noncontrolling Interests							0
Total Consideration			$ 1,347,000	$ 31,000			1,347,046
Fair Value of Identifiable Assets Acquired:
Cash							34,307
Accounts Receivable, Prepaid Expenses and Other Assets							7,070
Property, Plant and Equipment							863,027
Customer Relationship Intangible Assets							0
Operating lease right-of-use assets							0
Data Center In-Place Leases							104,340
Data Center Tenant Relationships							77,362
Data Center Above-Market Leases							16,439
Other Intangible Assets							0
Debt Assumed							0
Accounts Payable, Accrued Expenses and Other Liabilities							(36,230)
Operating Lease Liabilities							0
Deferred Income Taxes							0
Data Center Below-Market Leases							(11,421)
Total Fair Value of Identifiable Net Assets Acquired							1,054,894
Goodwill Initially Recorded							292,152
Series of Individually Immaterial Business Acquisitions and IODC
Consideration paid for acquisitions
Cash Paid (gross of cash acquired)							1,779,124
Accrued Purchase Price and Other Holdbacks (see Note 6)							35,218
Fair Value of Common Stock Issued							0
Fair Value of Noncontrolling Interests							0
Total Consideration							1,814,342
Fair Value of Identifiable Assets Acquired:
Cash							44,534
Accounts Receivable, Prepaid Expenses and Other Assets							24,732
Property, Plant and Equipment							1,088,875
Customer Relationship Intangible Assets							44,622
Data Center In-Place Leases							140,470
Data Center Tenant Relationships							95,772
Data Center Above-Market Leases							18,820
Other Intangible Assets							0
Debt Assumed							(12,312)
Accounts Payable, Accrued Expenses and Other Liabilities							(53,436)
Deferred Income Taxes							(43,218)
Data Center Below-Market Leases							(12,115)
Total Fair Value of Identifiable Net Assets Acquired							1,336,744
Goodwill Initially Recorded							477,598
EvoSwitch
Consideration paid for acquisitions
Cash Paid (gross of cash acquired)	$ 222,000	€ 189,000
Accrued Purchase Price and Other Holdbacks (see Note 6)							$ 18,824
Santa Fe China Transaction
Consideration paid for acquisitions
Accrued Purchase Price and Other Holdbacks (see Note 6)								$ 16,771
Total Consideration					$ 16,800
Customer relationship intangible assets
Fair Value of Identifiable Assets Acquired:
Acquired finite-lived intangible assets, weighted average useful life						16 years	10 years	12 years
Data center in-place leases
Fair Value of Identifiable Assets Acquired:
Acquired finite-lived intangible assets, weighted average useful life							6 years
Data center tenant relationships
Fair Value of Identifiable Assets Acquired:
Acquired finite-lived intangible assets, weighted average useful life							9 years
Data center above-market leases
Fair Value of Identifiable Assets Acquired:
Acquired finite-lived intangible assets, weighted average useful life							3 years
Data center below-market leases
Fair Value of Identifiable Assets Acquired:
Acquired finite-lived intangible assets, weighted average useful life							7 years

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) € in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Jun. 30, 2019EUR (€)	Dec. 31, 2016USD ($)
Tax carryforwards
Transition tax			$ 160,000,000
REIT taxable income			70,900,000
GILTI estimate	$ 0	$ 41,944,000
Net operating loss carryforwards, tax effected	99,240,000	92,952,000
Benefit for income taxes	$ (59,931,000)	$ (42,753,000)	$ (22,962,000)
Federal tax rate	21.00%	21.00%	35.00%
Effective tax rate	18.30%	10.40%	11.40%
Tax adjustment relating to REIT	$ 40,577,000	$ 35,165,000	$ 78,873,000
Foreign tax rate differential provision (benefit)	8,562,000	1,031,000	(9,639,000)
Tax benefit as a result of the resolution of a tax matter		14,000,000
Increase in valuation allowance (net operating losses)	(6,211,000)	(3,568,000)	4,317,000
Tax expense			24,791,000
Incremental foreign earnings	279,700,000
Increase in gross interest and penalties recorded	1,780,000	1,961,000	289,000
Accrued interest and penalties recorded	9,282,000	7,557,000
Unrecognized tax benefits	35,068,000	35,320,000	$ 38,533,000		$ 59,466,000
Unrecognized tax benefits included in other long-term liabilities	31,992,000	32,144,000
Deferred income taxes including unrecognized tax benefits	3,076,000	3,176,000
Unrecognized tax benefits net of federal benefits	32,311,000
Unrecognized tax benefits that would impact tax rate	7,400,000
Unrecognized tax benefits that would impact tax rate, net of federal tax benefit		4,587,000
Foreign
Tax carryforwards
Net operating loss carryforwards, tax effected	$ 90,811,000
Net operating loss carryforwards subject to valuation allowance (as a percent)	64.00%
Tax and Customs Administration, Netherlands | Foreign
Tax carryforwards
VAT liability		$ 4,971,000		€ 16,800
Federal
Tax carryforwards
Net operating loss carryforwards, before tax effect	$ 152,743,000
Net operating loss carryforwards, tax effected	39,156,000
Benefit for income taxes	$ 8,223,000

Income Taxes - Significant Comp

Income Taxes - Significant Components To Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred Tax Assets:
Accrued liabilities and other adjustments	$ 53,197	$ 59,477
Net operating loss carryforwards	99,240	92,952
Federal benefit of unrecognized tax benefits	3,039	2,925
Valuation allowance	(60,003)	(55,666)
Deferred tax assets	95,473	99,688
Deferred Tax Liabilities:
Other assets, principally due to differences in amortization	(177,645)	(166,469)
Plant and equipment, principally due to differences in depreciation	(67,515)	(74,147)
Other	(21,903)	(26,260)
Deferred tax liabilities	(267,063)	(266,876)
Net deferred tax liability	$ (171,590)	$ (167,188)

Income Taxes - Current and Nonc

Income Taxes - Current and Noncurrent Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Noncurrent deferred tax assets (Included in Other, a component of Other assets, net)	$ 16,538	$ 16,648
Deferred income taxes	$ (188,128)	$ (183,836)

Income Taxes - Rollforward of V

Income Taxes - Rollforward of Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Roll forward of valuation allowance:
Balance at Beginning of the Year	$ 55,666
Balance at the End of the Year	60,003	$ 55,666
Valuation Allowance of Deferred Tax Assets
Roll forward of valuation allowance:
Balance at Beginning of the Year	55,666	61,756	$ 71,359
Charged (Credited) to Expense	6,211	3,568	(4,317)
Other Increases/(Decreases)	(1,874)	(9,658)	(5,286)
Balance at the End of the Year	$ 60,003	$ 55,666	$ 61,756

Income Taxes - Components Of In

Income Taxes - Components Of Income (Loss) From Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
United States	$ 203,225	$ 203,078	$ 162,763
Canada	48,326	53,779	50,019
Other Foreign	76,591	153,454	(11,805)
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes	$ 328,142	$ 410,311	$ 200,977

Income Taxes - Income Tax Recon

Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Provision (benefit) for income taxes:
Federal—current	$ 7,262	$ 703	$ 16,345
Federal—deferred	(3,356)	(4,162)	(12,655)
State—current	3,943	918	3,440
State—deferred	(1,126)	627	(1,276)
Foreign—current	49,350	45,371	42,532
Foreign—deferred	3,858	(704)	(25,424)
Provision (Benefit) for Income Taxes	59,931	42,753	22,962
Changes in income taxes resulting from:
Computed expected tax provision	68,910	86,165	70,342
Tax adjustment relating to REIT	(40,577)	(35,165)	(78,873)
State taxes (net of federal tax benefit)	2,115	1,599	2,692
Increase (decrease) in valuation allowance (net operating losses)	6,211	3,568	(4,317)
Foreign repatriation	0	0	29,476
U.S. Federal Rate Reduction	0	0	(4,685)
Reserve (reversal) accrual and audit settlements (net of federal tax benefit)	514	(13,985)	(9,103)
Foreign tax rate differential	8,562	1,031	(9,639)
Disallowed foreign interest, Subpart F income, and other foreign taxes	14,241	903	29,325
Other, net	(45)	(1,363)	(2,256)
Provision (Benefit) for Income Taxes	$ 59,931	$ 42,753	$ 22,962

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of unrecognized tax benefits:
Gross tax contingencies - beginning of the period	$ 35,320	$ 38,533	$ 59,466
Gross additions based on tax positions related to the current year	2,914	3,147	4,067
Gross additions for tax positions of prior years	1,271	981	3,368
Gross reductions for tax positions of prior years	(299)	(2,865)	(2,789)
Lapses of statutes	(4,034)	(4,462)	(2,629)
Settlements	(104)	(14)	(22,950)
Gross tax contingencies - end of the period	$ 35,068	$ 35,320	$ 38,533

Quarterly Results of Operatio_3

Quarterly Results of Operations (Unaudited) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Total revenues	$ 1,079,590,000	$ 1,062,224,000	$ 1,066,907,000	$ 1,053,863,000					$ 4,262,584,000
Total revenues					$ 1,061,489,000	$ 1,060,991,000	$ 1,060,823,000	$ 1,042,458,000		$ 4,225,761,000	$ 3,845,578,000
Operating income (loss)	206,074,000	223,474,000	193,115,000	158,675,000	254,053,000	195,635,000	201,460,000	157,119,000	781,338,000	808,267,000	634,051,000
Income (loss) from continuing operations	37,104,000	108,284,000	92,347,000	30,476,000	158,557,000	77,349,000	92,263,000	39,389,000	268,211,000	367,558,000	178,015,000
Total (loss) income from discontinued operations	0	0	128,000	(24,000)	0	(11,605,000)	(360,000)	(462,000)	104,000	(12,427,000)	(6,291,000)
Net Income (Loss)	37,104,000	108,284,000	92,475,000	30,452,000	158,557,000	65,744,000	91,903,000	38,927,000	268,315,000	355,131,000	171,724,000
Net income (loss) attributable to Iron Mountain Incorporated	$ 37,700,000	$ 107,675,000	$ 92,441,000	$ 29,561,000	$ 157,844,000	$ 65,869,000	$ 91,761,000	$ 38,459,000	$ 267,377,000	$ 353,933,000	$ 170,113,000
Earnings (Losses) per Share—Basic:
Income (loss) per share from continuing operations (in dollars per share)	$ 0.13	$ 0.37	$ 0.32	$ 0.10	$ 0.55	$ 0.27	$ 0.32	$ 0.14	$ 0.93	$ 1.28	$ 0.66
Total (loss) income per share from discontinued operations (in dollars per share)	0	0	0	0	0	(0.04)	0	0	0	(0.04)	(0.02)
Net income (loss) per share attributable to Iron Mountain Incorporated (in dollars per share)	0.13	0.37	0.32	0.10	0.55	0.23	0.32	0.13	0.93	1.24	0.64
Earnings (Losses) per Share—Diluted:
Income (loss) per share from continuing operations (in dollars per share)	0.13	0.37	0.32	0.10	0.55	0.27	0.32	0.14	0.93	1.28	0.66
Total (loss) income per share from discontinued operations (in dollars per share)	0	0	0	0	0	(0.04)	0	0	0	(0.04)	(0.02)
Net income (loss) per share attributable to Iron Mountain Incorporated (in dollars per share)	$ 0.13	$ 0.37	$ 0.32	$ 0.10	$ 0.55	$ 0.23	$ 0.32	$ 0.13	$ 0.93	$ 1.23	$ 0.64
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Increase in gains (losses) on foreign currency transactions	$ (63,000,000)				$ 20,000,000
Restructuring Charges	48,600,000								$ 48,597,000	$ 0	$ 0
(Gain) Loss on disposal/write-down of property, plant and equipment, net	37,500,000
Decrease in tax provision	$ 5,100,000				11,200,000
Initial United States Divestments | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Charge related to resolution of post-closing adjustment to Access Contingent Consideration					11,100,000
United Kingdom
Quarterly Financial Information Disclosure [Abstract]
Total revenues									$ 274,931,000
Total revenues										$ 280,993,000	$ 246,373,000
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					62,500,000
Income (Loss) From Continuing Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Immaterial misstatement					$ 274,000	$ 1,279,000	$ 1,640,000	$ 6,225,000

Segment Information - Additiona

Segment Information - Additional Information (Details)	12 Months Ended
	Dec. 31, 2019segment
Segment Reporting [Abstract]
Number of operating segments	3

Segment Information - Revenue a

Segment Information - Revenue and Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment information
Total Revenues	$ 1,079,590	$ 1,062,224	$ 1,066,907	$ 1,053,863					$ 4,262,584
Storage rental									2,681,087
Revenues					$ 1,061,489	$ 1,060,991	$ 1,060,823	$ 1,042,458		$ 4,225,761	$ 3,845,578
Depreciation and Amortization									658,201	639,514	522,376
Depreciation									456,323	452,740	406,283
Amortization									201,878	186,774	116,093
Adjusted EBITDA									1,437,605	1,424,824	1,243,573
Total Assets	13,816,816				11,857,218				13,816,816	11,857,218	10,975,387
Expenditures for Segment Assets									882,867	2,317,306	638,021
Capital Expenditures									692,983	460,062	343,131
Cash Paid for Acquisitions, Net of Cash Acquired									58,237	1,758,557	219,705
Acquisitions of Customer Relationships, Customer Inducements, Contract Fulfillment Costs and third-party commissions									131,647	98,687	75,185
Global RIM Business
Segment information
Total Revenues									3,812,433
Storage rental									2,320,076
Revenues										3,842,600	3,706,110
Depreciation and Amortization									454,652	472,155	458,634
Depreciation									330,534	341,384	351,915
Amortization									124,118	130,771	106,719
Adjusted EBITDA									1,563,223	1,569,353	1,470,579
Total Assets	10,753,218				9,135,198				10,753,218	9,135,198	9,151,755
Expenditures for Segment Assets									398,690	443,634	424,628
Capital Expenditures									248,232	254,308	262,474
Cash Paid for Acquisitions, Net of Cash Acquired									54,717	93,217	86,969
Acquisitions of Customer Relationships, Customer Inducements, Contract Fulfillment Costs and third-party commissions									95,741	96,109	75,185
Global Data Center Business
Segment information
Total Revenues									257,151
Storage rental									246,925
Revenues										228,983	37,694
Depreciation and Amortization									133,927	105,680	10,224
Depreciation									78,939	58,707	8,617
Amortization									54,988	46,973	1,607
Adjusted EBITDA									121,517	99,574	11,275
Total Assets	2,535,848				2,217,505				2,535,848	2,217,505	382,198
Expenditures for Segment Assets									427,935	1,794,386	86,543
Capital Expenditures									392,029	152,739	32,015
Cash Paid for Acquisitions, Net of Cash Acquired									0	1,639,427	54,528
Acquisitions of Customer Relationships, Customer Inducements, Contract Fulfillment Costs and third-party commissions									35,906	2,220	0
Corporate and Other Business
Segment information
Total Revenues									193,000
Storage rental									114,086
Revenues										154,178	101,774
Depreciation and Amortization									69,622	61,679	53,518
Depreciation									46,850	52,649	45,751
Amortization									22,772	9,030	7,767
Adjusted EBITDA									(247,135)	(244,103)	(238,281)
Total Assets	$ 527,750				504,515				527,750	504,515	1,441,434
Expenditures for Segment Assets									56,242	79,286	126,850
Capital Expenditures									52,722	53,015	48,642
Cash Paid for Acquisitions, Net of Cash Acquired									3,520	25,913	78,208
Acquisitions of Customer Relationships, Customer Inducements, Contract Fulfillment Costs and third-party commissions									0	358	0
Storage rental
Segment information
Revenues										2,622,455	2,377,557
Storage rental | Global RIM Business
Segment information
Revenues										2,301,344	2,261,831
Storage rental | Global Data Center Business
Segment information
Revenues										218,675	35,839
Storage rental | Corporate and Other Business
Segment information
Revenues										102,436	79,887
Service
Segment information
Revenues									1,581,497	1,603,306	1,468,021
Service | Global RIM Business
Segment information
Revenues									1,492,357	1,541,256	1,444,279
Service | Global Data Center Business
Segment information
Revenues									10,226	10,308	1,855
Service | Corporate and Other Business
Segment information
Revenues									$ 78,914	51,742	21,887
ASU 2016-02 | Corporate and Other Business
Segment information
Total Assets					$ 4,971					$ 4,971	$ 2,985

Segment Information - Reconcili

Segment Information - Reconciliation of Adjusted EBITDA to Income (Loss) from Continuing Operations (Details) - USD ($) $ in Thousands	Oct. 01, 2017	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Adjusted EBITDA to income from continuing operations
Adjusted EBITDA										$ 1,437,605	$ 1,424,824	$ 1,243,573
Provision (Benefit) for Income Taxes										59,931	42,753	22,962
Other Expense (Income), Net										33,898	(11,692)	79,429
Interest Expense (Income), Net										419,298	409,648	353,645
(Gain) Loss on disposal/write-down of property, plant and equipment, net										(63,824)	(73,622)	(766)
Depreciation and amortization										658,201	639,514	522,376
Significant Acquisition Costs										13,293	50,665	84,901
Restructuring Charges										48,597	0	0
Intangible impairments	$ 3,011									0	0	3,011
Income (Loss) from Continuing Operations		$ 37,104	$ 108,284	$ 92,347	$ 30,476	$ 158,557	$ 77,349	$ 92,263	$ 39,389	268,211	367,558	178,015
Recall Transaction and IODC Transaction
Reconciliation of Adjusted EBITDA to income from continuing operations
Significant Acquisition Costs										$ 13,293	$ 50,665	$ 84,901

Segment Information - Revenue_2

Segment Information - Revenue and Asset Information by Geography and Service Line (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues by product and service lines
Total Revenues	$ 1,079,590	$ 1,062,224	$ 1,066,907	$ 1,053,863					$ 4,262,584
Revenues					$ 1,061,489	$ 1,060,991	$ 1,060,823	$ 1,042,458		$ 4,225,761	$ 3,845,578
Long-Lived Assets	12,580,477				10,649,104				12,580,477	10,649,104	9,025,072
Records Management
Revenues by product and service lines
Total Revenues									2,995,146
Revenues										2,967,922	2,847,691
Data Management
Revenues by product and service lines
Total Revenues									584,128
Revenues										596,544	574,251
Information Destruction
Revenues by product and service lines
Total Revenues									426,159
Revenues										432,312	385,942
Data Center
Revenues by product and service lines
Total Revenues									257,151
Revenues										228,983	37,694
United States
Revenues by product and service lines
Total Revenues									2,632,586
Revenues										2,579,847	2,310,296
Long-Lived Assets	7,862,262				6,902,232				7,862,262	6,902,232	5,476,551
United Kingdom
Revenues by product and service lines
Total Revenues									274,931
Revenues										280,993	246,373
Long-Lived Assets	755,859				547,768				755,859	547,768	529,233
Canada
Revenues by product and service lines
Total Revenues									243,033
Revenues										249,505	243,625
Long-Lived Assets	556,591				453,398				556,591	453,398	500,396
Australia
Revenues by product and service lines
Total Revenues									143,511
Revenues										155,367	157,333
Long-Lived Assets	530,755				442,755				530,755	442,755	470,432
Remaining Countries
Revenues by product and service lines
Total Revenues									968,523
Revenues										960,049	887,951
Long-Lived Assets	$ 2,875,010				$ 2,302,951				2,875,010	2,302,951	2,048,460
Global RIM Business
Revenues by product and service lines
Total Revenues									3,812,433
Revenues										3,842,600	3,706,110
Global RIM Business | Records Management
Revenues by product and service lines
Total Revenues									2,866,192
Revenues										2,871,253	2,778,024
Global RIM Business | Data Management
Revenues by product and service lines
Total Revenues									520,082
Revenues										539,035	542,148
Global RIM Business | Information Destruction
Revenues by product and service lines
Total Revenues									426,159
Revenues										432,312	385,938
Global RIM Business | Data Center
Revenues by product and service lines
Total Revenues									0
Revenues										0	0
Global Data Center Business
Revenues by product and service lines
Total Revenues									257,151
Revenues										228,983	37,694
Global Data Center Business | Records Management
Revenues by product and service lines
Total Revenues									0
Revenues										0	0
Global Data Center Business | Data Management
Revenues by product and service lines
Total Revenues									0
Revenues										0	0
Global Data Center Business | Information Destruction
Revenues by product and service lines
Total Revenues									0
Revenues										0	0
Global Data Center Business | Data Center
Revenues by product and service lines
Total Revenues									257,151
Revenues										228,983	37,694
Corporate and Other Business
Revenues by product and service lines
Total Revenues									193,000
Revenues										154,178	101,774
Corporate and Other Business | Records Management
Revenues by product and service lines
Total Revenues									128,954
Revenues										96,669	69,667
Corporate and Other Business | Data Management
Revenues by product and service lines
Total Revenues									64,046
Revenues										57,509	32,103
Corporate and Other Business | Information Destruction
Revenues by product and service lines
Total Revenues									0
Revenues										0	4
Corporate and Other Business | Data Center
Revenues by product and service lines
Total Revenues									$ 0
Revenues										$ 0	$ 0

Segment Information - Significa

Segment Information - Significant Acquisition Costs by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment information
Total Significant Acquisition Costs	$ 13,293	$ 50,665	$ 84,901
Global RIM Business
Segment information
Total Significant Acquisition Costs	8,223	20,590	47,722
Global Data Center Business
Segment information
Total Significant Acquisition Costs	337	11,423	0
Corporate and Other Business
Segment information
Total Significant Acquisition Costs	$ 4,733	$ 18,652	$ 37,179

Commitments and Contingencies -

Commitments and Contingencies - Purchase Commitments (Details) $ in Thousands	Dec. 31, 2019USD ($)
Commitments and Contingencies Disclosure [Abstract]
2020	$ 134,127
2021	68,208
2022	32,480
2023	2,004
2024	1,985
Thereafter	340
Total	$ 239,144

Commitments and Contingencies_2

Commitments and Contingencies - Additional Information (Details) € in Thousands, box in Thousands, $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2019USD ($)customerlawsuitclaim	Dec. 31, 2019EUR (€)customerlawsuit	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Jun. 30, 2019EUR (€)	Jan. 31, 2015customerbox
Commitments and Contingencies
Self-insured accrual	$ 41,328	$ 41,328	$ 43,127		$ 41,328
Gain on disposal/write-down of property, plant and equipment (excluding real estate), net			63,824		74,134	$ 766
Insurance Settlement
Commitments and Contingencies
Loss contingencies, reasonably possible loss exposure in excess of the amount currently accrued			$ 6,000
Italy Fire
Commitments and Contingencies
Number of customer lawsuits | customer			6	6
Number of settled lawsuits | lawsuit			4	4
Number of pending lawsuits | lawsuit			2
Damages sought (Euros) | €				€ 42,600
Argentina Fire
Commitments and Contingencies
Facility revenue as a percentage of consolidated revenues (less than)			0.50%	0.50%
Insurance proceeds received	13,700
Gain on disposal/write-down of property, plant and equipment (excluding real estate), net		8,814
Insurance Claims
Commitments and Contingencies
Number of pending lawsuits | claim			1
Number of cartons of customer records lost | box								900
Number of customers impacted by fire | customer								1,200
Tax and Customs Administration, Netherlands | Foreign
Commitments and Contingencies
VAT liability	$ 4,971	$ 4,971			$ 4,971		€ 16,800

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Makespace
Related Party Transaction [Line Items]
Revenue from related party	$ 22,500

Stockholders' Equity Matters -

Stockholders' Equity Matters - Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Thousands	Jan. 02, 2020	Oct. 31, 2019	Oct. 02, 2019	Jul. 26, 2019	Jul. 02, 2019	May 22, 2019	Apr. 02, 2019	Feb. 07, 2019	Jan. 03, 2019	Oct. 25, 2018	Oct. 02, 2018	Jul. 24, 2018	Jul. 02, 2018	May 24, 2018	Apr. 02, 2018	Feb. 14, 2018	Jan. 02, 2018	Oct. 24, 2017	Oct. 02, 2017	Jul. 27, 2017	Jul. 03, 2017	May 24, 2017	Apr. 03, 2017	Feb. 15, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Subsequent Event [Line Items]
Dividends per share (in dollars per share)		$ 0.6185		$ 0.6110		$ 0.6110		$ 0.6110		$ 0.6110		$ 0.5875		$ 0.5875		$ 0.5875		$ 0.5875		$ 0.5500		$ 0.5500		$ 0.5500	$ 2.45	$ 2.38	$ 2.27
Dividends declared			$ 175,434		$ 175,389		$ 175,242		$ 174,935		$ 168,148		$ 168,078		$ 167,969		$ 166,319		$ 146,772		$ 145,417		$ 145,235		$ 708,561	$ 683,519	$ 606,476
Subsequent Event
Subsequent Event [Line Items]
Dividends declared	$ 177,687

Stockholders' Equity Matters _2

Stockholders' Equity Matters - Additional Information (Details)	Oct. 31, 2019$ / shares	Jul. 26, 2019$ / shares	May 22, 2019$ / shares	Feb. 07, 2019$ / shares	Oct. 25, 2018$ / shares	Jul. 24, 2018$ / shares	May 24, 2018$ / shares	Feb. 14, 2018$ / shares	Jan. 02, 2018USD ($)	Dec. 12, 2017USD ($)bank$ / sharesshares	Oct. 24, 2017$ / shares	Jul. 27, 2017$ / shares	May 24, 2017$ / shares	Feb. 15, 2017$ / shares	Oct. 31, 2017USD ($)bank	Dec. 31, 2019USD ($)$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017USD ($)$ / sharesshares
Class of Stock [Line Items]
Amount of declared distributions																$ 703,752,000	$ 679,130,000	$ 603,743,000
Dividends per share (in dollars per share) | $ / shares	$ 0.6185	$ 0.6110	$ 0.6110	$ 0.6110	$ 0.6110	$ 0.5875	$ 0.5875	$ 0.5875			$ 0.5875	$ 0.5500	$ 0.5500	$ 0.5500		$ 2.45	$ 2.38	$ 2.27
Percent of dividends paid																100.00%	100.00%	100.00%
Sale of stock consideration received on transaction, gross																$ 0	$ 8,716,000	$ 59,129,000
Common stock, par value (in dollars per share) | $ / shares																$ 0.01	$ 0.01
At The Market (ATM) Equity Program
Class of Stock [Line Items]
Number of banks | bank															10
Sale of stock, authorized amount															$ 500,000,000
Sale of stock, number of shares issued in transaction (in shares) | shares																0	273,486	1,481,053
Sale of stock consideration received on transaction, gross																	$ 8,800,000	$ 60,000,000
Sale of stock, consideration received on transaction																	8,716,000	59,100,000
Payment of stock trading commission costs																	$ 90,000	$ 900,000
Sale of stock, remaining aggregate sale price of stock available for distribution																$ 431,200,000
Equity Offering
Class of Stock [Line Items]
Number of banks | bank										16
Sale of stock, number of shares issued in transaction (in shares) | shares										14,500,000
Sale of stock, consideration received on transaction										$ 516,462,000
Common stock, par value (in dollars per share) | $ / shares										$ 37
Payments of stock issuance costs per share (in dollars per share) | $ / shares										$ 1.38195
Over-Allotment Option
Class of Stock [Line Items]
Sale of stock, number of shares issued in transaction (in shares) | shares										2,175,000
Sale of stock, consideration received on transaction									$ 76,200,000
Capital gains
Class of Stock [Line Items]
Percent of dividends paid																14.70%	5.80%	0.00%

Stockholders' Equity Matters _3

Stockholders' Equity Matters - Classification of Dividends Paid (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Percent of dividends paid	100.00%	100.00%	100.00%
Nonqualified ordinary dividends
Class of Stock [Line Items]
Percent of dividends paid	54.80%	83.00%	82.10%
Qualified ordinary dividends
Class of Stock [Line Items]
Percent of dividends paid	4.50%	4.80%	17.90%
Capital gains
Class of Stock [Line Items]
Percent of dividends paid	14.70%	5.80%	0.00%
Return of capital
Class of Stock [Line Items]
Percent of dividends paid	26.00%	6.40%	0.00%

Divestments - Additional Inform

Divestments - Additional Information (Details) - USD ($) $ in Thousands	Mar. 19, 2019	May 30, 2017	May 04, 2016	Mar. 31, 2019	Jun. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 09, 2020	Sep. 28, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investments in joint ventures						$ 19,222	$ 0	$ 0
Gain on divestiture						0	0	38,869
Net proceeds from divestments						0	1,019	29,236
Disposal Group, Not Discontinued Operations | Consumer Storage
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on divestiture				$ 4,200
Disposal Group, Not Discontinued Operations | Russia and Ukraine Divestment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on divestiture					$ 38,869			$ 38,869
Ownership interest after disposal		25.00%
Cumulative translation adjustment		$ 29,100
Carrying value of net assets excluding goodwill		4,716
Goodwill		3,515
Disposal Group, Not Discontinued Operations | Other Assets | Russia and Ukraine Divestment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Fair value of previously held equity interests		18,000
Equity method investments		$ 20,869
Discontinued Operations, Disposed of by Sale | IMFS
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal consideration										$ 3,000
Discontinued Operations, Disposed of by Sale | Initial United States Divestments
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net proceeds from divestments			$ 25,000
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%
Fair value of previously held equity interests	$ 27,500
Equity method investments						18,570
Corporate Joint Venture | OSG Investment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity method investments						$ 17,012	$ 17,514
Subsequent Event | OSG Acquisition
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity interest acquired									75.00%

Divestments - Results of Operat

Divestments - Results of Operations (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (Loss) from Discontinued Operations, Net of Tax	$ 0	$ 0	$ 128	$ (24)	$ 0	$ (11,605)	$ (360)	$ (462)	$ 104	$ (12,427)	$ (6,291)
Recall Divestments | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Revenues									0	0	0
Income (Loss) from Discontinued Operations Before Provision (Benefit) for Income Taxes									104	(12,574)	(8,118)
(Benefit) Provision for Income Taxes									0	(147)	(1,827)
Income (Loss) from Discontinued Operations, Net of Tax									$ 104	$ (12,427)	$ (6,291)

Restructuring Charges - Additio

Restructuring Charges - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended			27 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 48,600	$ 48,597	$ 0	$ 0
Forecast | Project Summit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges					$ 240,000

Restructuring Charges - Restruc

Restructuring Charges - Restructuring Charges (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 48,600	$ 48,597	$ 0	$ 0
Global RIM Business
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		21,900
Global Data Center Business
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		306
Corporate and Other Business
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		$ 26,391

Subsequent Events (Details)

Subsequent Events (Details) - OSG Acquisition - Subsequent Event $ in Thousands	Jan. 09, 2020USD ($)	Jan. 09, 2020RUB (₽)
Subsequent Event [Line Items]
Equity interest acquired	75.00%	75.00%
Cash consideration	$ 95,100	₽ 6,026,020,000

SCHEDULE III - SCHEDULE OF RE_2

SCHEDULE III - SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2019USD ($)facility	Dec. 31, 2018USD ($)
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]
Number of facilities leased | facility			1,150
Gross Amount of Real Estate Assets, As Reported on Schedule III	$ 3,700,307	$ 2,707,925	$ 3,856,515	$ 3,700,307
Book value of racking included in leased facilities			1,321,159
Book value of financing leases			439,166
Book value of construction in progress			280,108
Book value of other			73,182
Total Reconciling Items			2,113,615
Gross Amount of Real Estate Assets, As Disclosed in Note 2.f.			5,970,130
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	1,072,013	909,092	1,072,013	1,011,050
Accumulated Depreciation, Non-Real Estate Assets			1,412,193
Accumulated Depreciation, Racking In Lease Facilities			817,069
Accumulated Depreciation, Financing Leases			124,594
Accumulated Depreciation, Reconciling Items			2,353,856
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment			$ 3,425,869	3,111,392
Activity in Real Estate
Gross amount at beginning of period	3,700,307	2,707,925
Additions during period:
Discretionary capital projects	278,508	155,901
Acquisitions	0	918,091
Other adjustments	25,077	0
Foreign currency translation fluctuations	5,978	(58,798)
Total additions	309,563	1,015,194
Deductions during period:
Cost of real estate sold, disposed or written-down	(153,355)	(22,812)
Gross amount at end of period	3,856,515	3,700,307
Change in accumulated depreciation
Gross amount of accumulation depreciation at beginning of year:	1,011,050	909,092
Additions during period:
Depreciation	122,366	125,280
Other adjustments	1,314	0
Foreign currency translation fluctuations	3,514	(16,016)
Total additions	127,194	109,264
Deductions during period
Amount of accumulated depreciation for real estate assets sold, disposed or written-down	(66,231)	(7,306)
Gross amount of end of period	$ 1,072,013	$ 1,011,050
Aggregate Cost of Real Estate Assets				$ 3,812,000

SCHEDULE III - SCHEDULE OF RE_3

SCHEDULE III - SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)facility	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	298
Encumbrances	$ 1,814
Initial cost to Company	2,437,201
Cost capitalized subsequent to acquisition	1,419,314
Gross amount carried at close of current period	3,856,515	$ 3,700,307	$ 2,707,925
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,072,013	$ 1,011,050	$ 909,092
Number of facilities leased | facility	1,150
North America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	195
Encumbrances	$ 0
Initial cost to Company	1,980,277
Cost capitalized subsequent to acquisition	1,148,758
Gross amount carried at close of current period	3,129,035
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 856,220
United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	179
Encumbrances	$ 0
Initial cost to Company	1,908,077
Cost capitalized subsequent to acquisition	1,070,345
Gross amount carried at close of current period	2,978,422
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 791,249
Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	16
Encumbrances	$ 0
Initial cost to Company	72,200
Cost capitalized subsequent to acquisition	78,413
Gross amount carried at close of current period	150,613
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 64,971
Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	57
Encumbrances	$ 582
Initial cost to Company	231,658
Cost capitalized subsequent to acquisition	122,557
Gross amount carried at close of current period	354,215
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 138,588
Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	37
Encumbrances	$ 1,232
Initial cost to Company	116,111
Cost capitalized subsequent to acquisition	115,240
Gross amount carried at close of current period	231,351
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 64,325
Asia Pacific
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	7
Encumbrances	$ 0
Initial cost to Company	107,384
Cost capitalized subsequent to acquisition	30,310
Gross amount carried at close of current period	137,694
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 12,383
Australia
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	1,771
Cost capitalized subsequent to acquisition	2,449
Gross amount carried at close of current period	4,220
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 497
140 Oxmoor Ct, Birmingham, Alabama | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,322
Cost capitalized subsequent to acquisition	953
Gross amount carried at close of current period	2,275
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,107
140 Oxmoor Ct, Birmingham, Alabama | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1420 North Fiesta Blvd, Gilbert, Arizona | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,637
Cost capitalized subsequent to acquisition	2,737
Gross amount carried at close of current period	4,374
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,937
1420 North Fiesta Blvd, Gilbert, Arizona | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
4802 East Van Buren, Phoenix, Arizona | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	15,599
Cost capitalized subsequent to acquisition	141,274
Gross amount carried at close of current period	156,873
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 257
4802 East Van Buren, Phoenix, Arizona | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
615 North 48th Street, Phoenix, Arizona | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	423,107
Cost capitalized subsequent to acquisition	15,322
Gross amount carried at close of current period	438,429
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 28,395
615 North 48th Street, Phoenix, Arizona | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
2955 S. 18th Place, Phoenix, Arizona | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	12,178
Cost capitalized subsequent to acquisition	11,461
Gross amount carried at close of current period	23,639
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,227
2955 S. 18th Place, Phoenix, Arizona | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
4449 South 36th St, Phoenix, Arizona | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	7,305
Cost capitalized subsequent to acquisition	1,045
Gross amount carried at close of current period	8,350
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,002
4449 South 36th St, Phoenix, Arizona | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
8521 E. Princess Drive, Scottsdale, Arizona | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	87,865
Cost capitalized subsequent to acquisition	1,302
Gross amount carried at close of current period	89,167
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 8,139
8521 E. Princess Drive, Scottsdale, Arizona | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
13379 Jurupa Ave, Fontana, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	10,472
Cost capitalized subsequent to acquisition	8,714
Gross amount carried at close of current period	19,186
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 9,930
13379 Jurupa Ave, Fontana, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
600 Burning Tree Rd, Fullerton, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	4,762
Cost capitalized subsequent to acquisition	1,897
Gross amount carried at close of current period	6,659
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,969
600 Burning Tree Rd, Fullerton, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
21063 Forbes St., Hayward, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	13,407
Cost capitalized subsequent to acquisition	351
Gross amount carried at close of current period	13,758
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,666
21063 Forbes St., Hayward, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
5086 4th St, Irwindale, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	6,800
Cost capitalized subsequent to acquisition	2,523
Gross amount carried at close of current period	9,323
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,589
5086 4th St, Irwindale, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
6933 Preston Ave, Livermore, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	14,585
Cost capitalized subsequent to acquisition	13,927
Gross amount carried at close of current period	28,512
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 10,535
6933 Preston Ave, Livermore, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1006 North Mansfield, Los Angeles, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	749
Cost capitalized subsequent to acquisition	0
Gross amount carried at close of current period	749
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 109
1006 North Mansfield, Los Angeles, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1025 North Highland Ave, Los Angeles, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	10,168
Cost capitalized subsequent to acquisition	26,191
Gross amount carried at close of current period	36,359
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 13,914
1025 North Highland Ave, Los Angeles, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1350 West Grand Ave, Oakland, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	15,172
Cost capitalized subsequent to acquisition	6,224
Gross amount carried at close of current period	21,396
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 14,882
1350 West Grand Ave, Oakland, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1760 North Saint Thomas Circle, Orange, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	4,576
Cost capitalized subsequent to acquisition	495
Gross amount carried at close of current period	5,071
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,842
1760 North Saint Thomas Circle, Orange, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
8700 Mercury Lane, Pico Rivera, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	27,957
Cost capitalized subsequent to acquisition	213
Gross amount carried at close of current period	28,170
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 9,584
8700 Mercury Lane, Pico Rivera, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
8661 Kerns St, San Diego, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	10,512
Cost capitalized subsequent to acquisition	6,821
Gross amount carried at close of current period	17,333
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 7,352
8661 Kerns St, San Diego, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1915 South Grand Ave, Santa Ana, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,420
Cost capitalized subsequent to acquisition	1,261
Gross amount carried at close of current period	4,681
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,954
1915 South Grand Ave, Santa Ana, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
2680 Sequoia Dr, South Gate, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	6,329
Cost capitalized subsequent to acquisition	2,251
Gross amount carried at close of current period	8,580
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,177
2680 Sequoia Dr, South Gate, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
336 Oyster Point Blvd, South San Francisco, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	15,100
Cost capitalized subsequent to acquisition	18
Gross amount carried at close of current period	15,118
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,168
336 Oyster Point Blvd, South San Francisco, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
25250 South Schulte Rd, Tracy, California | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,049
Cost capitalized subsequent to acquisition	1,774
Gross amount carried at close of current period	4,823
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,080
25250 South Schulte Rd, Tracy, California | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
3576 N. Moline, Aurora, Colorado | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,583
Cost capitalized subsequent to acquisition	4,390
Gross amount carried at close of current period	5,973
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,810
3576 N. Moline, Aurora, Colorado | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
North Stone Ave, Colorado Springs, Colorado | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	761
Cost capitalized subsequent to acquisition	2,718
Gross amount carried at close of current period	3,479
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,771
North Stone Ave, Colorado Springs, Colorado | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
4300 Brighton Boulevard, Denver, Colorado | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	116,336
Cost capitalized subsequent to acquisition	19,117
Gross amount carried at close of current period	135,453
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 9,503
4300 Brighton Boulevard, Denver, Colorado | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
11333 E 53rd Ave, Denver, Colorado | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	7,403
Cost capitalized subsequent to acquisition	10,215
Gross amount carried at close of current period	17,618
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 9,330
11333 E 53rd Ave, Denver, Colorado | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
5151 E. 46th Ave, Denver, Colorado | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	6,312
Cost capitalized subsequent to acquisition	709
Gross amount carried at close of current period	7,021
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,528
5151 E. 46th Ave, Denver, Colorado | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
20 Eastern Park Rd, East Hartford, Connecticut | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	7,417
Cost capitalized subsequent to acquisition	1,891
Gross amount carried at close of current period	9,308
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 6,125
20 Eastern Park Rd, East Hartford, Connecticut | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Bennett Rd, Suffield, Connecticut | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	1,768
Cost capitalized subsequent to acquisition	933
Gross amount carried at close of current period	2,701
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,373
Bennett Rd, Suffield, Connecticut | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Kennedy Road, Windsor, Connecticut | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	10,447
Cost capitalized subsequent to acquisition	31,140
Gross amount carried at close of current period	41,587
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 20,432
Kennedy Road, Windsor, Connecticut | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
293 Ella Grasso Rd, Windsor Locks, Connecticut | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	4,021
Cost capitalized subsequent to acquisition	2,019
Gross amount carried at close of current period	6,040
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,846
293 Ella Grasso Rd, Windsor Locks, Connecticut | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
150-200 Todds Ln, Wilmington, Delaware | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	7,226
Cost capitalized subsequent to acquisition	1,044
Gross amount carried at close of current period	8,270
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,036
150-200 Todds Ln, Wilmington, Delaware | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
13280 Vantage Way, Jacksonville, Florida | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,853
Cost capitalized subsequent to acquisition	567
Gross amount carried at close of current period	2,420
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 938
13280 Vantage Way, Jacksonville, Florida | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
12855 Starkey Rd, Largo, Florida | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,293
Cost capitalized subsequent to acquisition	2,966
Gross amount carried at close of current period	6,259
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,187
12855 Starkey Rd, Largo, Florida | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
7801 Riviera Blvd, Miramar, Florida | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	8,250
Cost capitalized subsequent to acquisition	221
Gross amount carried at close of current period	8,471
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 808
7801 Riviera Blvd, Miramar, Florida | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
10002 Satellite Blvd, Orlando, Florida | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,927
Cost capitalized subsequent to acquisition	295
Gross amount carried at close of current period	2,222
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 886
10002 Satellite Blvd, Orlando, Florida | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
3501 Electronics Way, West Palm Beach, Florida | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	4,201
Cost capitalized subsequent to acquisition	13,678
Gross amount carried at close of current period	17,879
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 6,968
3501 Electronics Way, West Palm Beach, Florida | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1890 MacArthur Blvd, Atlanta Georgia | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,786
Cost capitalized subsequent to acquisition	742
Gross amount carried at close of current period	2,528
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,123
1890 MacArthur Blvd, Atlanta Georgia | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
3881 Old Gordon Rd, Atlanta, Georgia | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,185
Cost capitalized subsequent to acquisition	326
Gross amount carried at close of current period	1,511
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 863
3881 Old Gordon Rd, Atlanta, Georgia | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
5319 Tulane Drive SW, Atlanta, Georgia | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,808
Cost capitalized subsequent to acquisition	3,940
Gross amount carried at close of current period	6,748
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,146
5319 Tulane Drive SW, Atlanta, Georgia | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
6111 Live Oak Parkway, Norcross, Georgia | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,542
Cost capitalized subsequent to acquisition	1,648
Gross amount carried at close of current period	5,190
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 390
6111 Live Oak Parkway, Norcross, Georgia | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
3150 Nifda Dr, Smyrna, Georgia | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	463
Cost capitalized subsequent to acquisition	770
Gross amount carried at close of current period	1,233
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 731
3150 Nifda Dr, Smyrna, Georgia | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1301 S. Rockwell St, Chicago, Illinois | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	7,947
Cost capitalized subsequent to acquisition	19,657
Gross amount carried at close of current period	27,604
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 15,927
1301 S. Rockwell St, Chicago, Illinois | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
2211 W. Pershing Rd, Chicago, Illinois | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	4,264
Cost capitalized subsequent to acquisition	13,979
Gross amount carried at close of current period	18,243
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 8,435
2211 W. Pershing Rd, Chicago, Illinois | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
2425 South Halsted St, Chicago, Illinois | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	7,470
Cost capitalized subsequent to acquisition	1,658
Gross amount carried at close of current period	9,128
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,310
2425 South Halsted St, Chicago, Illinois | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
2604 West 13th St, Chicago, Illinois | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	404
Cost capitalized subsequent to acquisition	2,818
Gross amount carried at close of current period	3,222
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,799
2604 West 13th St, Chicago, Illinois | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
2255 Pratt Blvd, Elk Grove, Illinois | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,989
Cost capitalized subsequent to acquisition	3,892
Gross amount carried at close of current period	5,881
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,516
2255 Pratt Blvd, Elk Grove, Illinois | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
4175 Chandler Dr Opus No. Corp, Hanover Park, Illinois | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	22,048
Cost capitalized subsequent to acquisition	2,461
Gross amount carried at close of current period	24,509
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 9,552
4175 Chandler Dr Opus No. Corp, Hanover Park, Illinois | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
2600 Beverly Drive, Lincoln, Illinois | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,378
Cost capitalized subsequent to acquisition	923
Gross amount carried at close of current period	2,301
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 254
2600 Beverly Drive, Lincoln, Illinois | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
6090 NE 14th Street, Des Moines, Iowa | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	622
Cost capitalized subsequent to acquisition	504
Gross amount carried at close of current period	1,126
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 408
6090 NE 14th Street, Des Moines, Iowa | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
South 7th St, Louisville, Kentucky | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	4
Encumbrances	$ 0
Initial cost to Company	709
Cost capitalized subsequent to acquisition	13,427
Gross amount carried at close of current period	14,136
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,302
South 7th St, Louisville, Kentucky | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
26 Parkway Drive (fka 133 Pleasant), Scarborough, Maine | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	8,337
Cost capitalized subsequent to acquisition	387
Gross amount carried at close of current period	8,724
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,151
26 Parkway Drive (fka 133 Pleasant), Scarborough, Maine | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
8928 McGaw Ct, Columbia, Maryland | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,198
Cost capitalized subsequent to acquisition	6,416
Gross amount carried at close of current period	8,614
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,591
8928 McGaw Ct, Columbia, Maryland | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
10641 Iron Bridge Rd, Jessup, Maryland | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,782
Cost capitalized subsequent to acquisition	1,337
Gross amount carried at close of current period	5,119
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,618
10641 Iron Bridge Rd, Jessup, Maryland | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
8275 Patuxent Range Rd, Jessup, Maryland | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	10,105
Cost capitalized subsequent to acquisition	7,703
Gross amount carried at close of current period	17,808
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 10,037
8275 Patuxent Range Rd, Jessup, Maryland | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
96 High St, Billerica, Massachusetts | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,221
Cost capitalized subsequent to acquisition	3,926
Gross amount carried at close of current period	7,147
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,661
96 High St, Billerica, Massachusetts | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
120 Hampden St, Boston, Massachusetts | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	164
Cost capitalized subsequent to acquisition	930
Gross amount carried at close of current period	1,094
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 542
120 Hampden St, Boston, Massachusetts | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
32 George St, Boston, Massachusetts | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,820
Cost capitalized subsequent to acquisition	5,391
Gross amount carried at close of current period	7,211
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,431
32 George St, Boston, Massachusetts | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
3435 Sharps Lot Rd, Dighton, Massachusetts | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,911
Cost capitalized subsequent to acquisition	788
Gross amount carried at close of current period	2,699
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,085
3435 Sharps Lot Rd, Dighton, Massachusetts | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
77 Constitution Boulevard, Franklin, Massachusetts | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	5,413
Cost capitalized subsequent to acquisition	218
Gross amount carried at close of current period	5,631
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 713
77 Constitution Boulevard, Franklin, Massachusetts | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
216 Canal St, Lawrence, Massachusetts | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,298
Cost capitalized subsequent to acquisition	1,089
Gross amount carried at close of current period	2,387
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,270
216 Canal St, Lawrence, Massachusetts | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Bearfoot Road, Northboro, Massachusetts | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	55,923
Cost capitalized subsequent to acquisition	12,506
Gross amount carried at close of current period	68,429
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 40,067
Bearfoot Road, Northboro, Massachusetts | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
38300 Plymouth Road, Livonia, Michigan | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	10,285
Cost capitalized subsequent to acquisition	1,243
Gross amount carried at close of current period	11,528
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,937
38300 Plymouth Road, Livonia, Michigan | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
6601 Sterling Dr South, Sterling Heights, Michigan | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,294
Cost capitalized subsequent to acquisition	1,150
Gross amount carried at close of current period	2,444
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,240
6601 Sterling Dr South, Sterling Heights, Michigan | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1985 Bart Ave, Warren, Michigan | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,802
Cost capitalized subsequent to acquisition	530
Gross amount carried at close of current period	2,332
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,113
1985 Bart Ave, Warren, Michigan | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Wahl Court, Warren, Michigan | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	3,426
Cost capitalized subsequent to acquisition	2,635
Gross amount carried at close of current period	6,061
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,705
Wahl Court, Warren, Michigan | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
31155 Wixom Rd, Wixom, Michigan | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	4,000
Cost capitalized subsequent to acquisition	1,381
Gross amount carried at close of current period	5,381
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,687
31155 Wixom Rd, Wixom, Michigan | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
3140 Ryder Trail South, Earth City, Missouri | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,072
Cost capitalized subsequent to acquisition	3,398
Gross amount carried at close of current period	6,470
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,351
3140 Ryder Trail South, Earth City, Missouri | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Missouri Bottom Road, Hazelwood, Missouri | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	4
Encumbrances	$ 0
Initial cost to Company	28,282
Cost capitalized subsequent to acquisition	4,969
Gross amount carried at close of current period	33,251
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 7,708
Missouri Bottom Road, Hazelwood, Missouri | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Leavenworth St/18th St, Omaha, Nebraska | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	3
Encumbrances	$ 0
Initial cost to Company	2,924
Cost capitalized subsequent to acquisition	19,736
Gross amount carried at close of current period	22,660
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 7,533
Leavenworth St/18th St, Omaha, Nebraska | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
4105 North Lamb Blvd, Las Vegas, Nevada | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,430
Cost capitalized subsequent to acquisition	8,957
Gross amount carried at close of current period	12,387
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,850
4105 North Lamb Blvd, Las Vegas, Nevada | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
17 Hydro Plant Rd, Milton, New Hampshire | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	6,179
Cost capitalized subsequent to acquisition	4,351
Gross amount carried at close of current period	10,530
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 6,523
17 Hydro Plant Rd, Milton, New Hampshire | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Kimberly Rd, East Brunsick, New Jersey | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	3
Encumbrances	$ 0
Initial cost to Company	22,105
Cost capitalized subsequent to acquisition	5,924
Gross amount carried at close of current period	28,029
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 14,303
Kimberly Rd, East Brunsick, New Jersey | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
3003 Woodbridge Avenue, Edison, New Jersey | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	310,404
Cost capitalized subsequent to acquisition	36,772
Gross amount carried at close of current period	347,176
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 19,038
3003 Woodbridge Avenue, Edison, New Jersey | Asia Pacific | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
811 Route 33, Freehold, New Jersey | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	3
Encumbrances	$ 0
Initial cost to Company	38,697
Cost capitalized subsequent to acquisition	55,396
Gross amount carried at close of current period	94,093
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 52,431
811 Route 33, Freehold, New Jersey | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
51-69 & 77-81 Court St, Newark, New Jersey | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	11,734
Cost capitalized subsequent to acquisition	9,774
Gross amount carried at close of current period	21,508
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,478
51-69 & 77-81 Court St, Newark, New Jersey | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
560 Irvine Turner Blvd, Newark, New Jersey | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	9,522
Cost capitalized subsequent to acquisition	709
Gross amount carried at close of current period	10,231
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 858
560 Irvine Turner Blvd, Newark, New Jersey | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
231 Johnson Ave, Newark, New Jersey | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	8,945
Cost capitalized subsequent to acquisition	1,855
Gross amount carried at close of current period	10,800
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 905
231 Johnson Ave, Newark, New Jersey | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
650 Howard Avenue, Somerset, New Jersey | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,585
Cost capitalized subsequent to acquisition	11,808
Gross amount carried at close of current period	15,393
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 6,027
650 Howard Avenue, Somerset, New Jersey | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
100 Bailey Ave, Buffalo, New York | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,324
Cost capitalized subsequent to acquisition	11,086
Gross amount carried at close of current period	12,410
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 6,584
100 Bailey Ave, Buffalo, New York | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
64 Leone Ln, Chester, New York | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	5,086
Cost capitalized subsequent to acquisition	1,132
Gross amount carried at close of current period	6,218
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,482
64 Leone Ln, Chester, New York | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1368 County Rd 8, Farmington, New York | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,611
Cost capitalized subsequent to acquisition	4,788
Gross amount carried at close of current period	7,399
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,609
1368 County Rd 8, Farmington, New York | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
County Rd 10, Linlithgo, New York | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	102
Cost capitalized subsequent to acquisition	2,959
Gross amount carried at close of current period	3,061
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,646
County Rd 10, Linlithgo, New York | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
77 Seaview Blvd, N. Hempstead New York | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	5,719
Cost capitalized subsequent to acquisition	1,442
Gross amount carried at close of current period	7,161
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,721
77 Seaview Blvd, N. Hempstead New York | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
37 Hurds Corner Road, Pawling, New York | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	4,323
Cost capitalized subsequent to acquisition	1,285
Gross amount carried at close of current period	5,608
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,271
37 Hurds Corner Road, Pawling, New York | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Ulster Ave/Route 9W, Port Ewen, New York | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	3
Encumbrances	$ 0
Initial cost to Company	23,137
Cost capitalized subsequent to acquisition	11,277
Gross amount carried at close of current period	34,414
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 22,318
Ulster Ave/Route 9W, Port Ewen, New York | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Binnewater Rd, Rosendale, New York | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	5,142
Cost capitalized subsequent to acquisition	11,664
Gross amount carried at close of current period	16,806
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 7,062
Binnewater Rd, Rosendale, New York | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
220 Wavel St, Syracuse, New York | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,929
Cost capitalized subsequent to acquisition	2,712
Gross amount carried at close of current period	5,641
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,924
220 Wavel St, Syracuse, New York | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
2235 Cessna Drive, Burlington, North Carolina | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,602
Cost capitalized subsequent to acquisition	328
Gross amount carried at close of current period	1,930
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 222
2235 Cessna Drive, Burlington, North Carolina | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
14500 Weston Pkwy, Cary, North Carolina | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,880
Cost capitalized subsequent to acquisition	2,224
Gross amount carried at close of current period	4,104
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,909
14500 Weston Pkwy, Cary, North Carolina | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
826 Church Street, Morrisville, North Carolina | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	7,087
Cost capitalized subsequent to acquisition	266
Gross amount carried at close of current period	7,353
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,335
826 Church Street, Morrisville, North Carolina | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1275 East 40th, Cleveland, Ohio | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,129
Cost capitalized subsequent to acquisition	599
Gross amount carried at close of current period	3,728
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,041
1275 East 40th, Cleveland, Ohio | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
7208 Euclid Avenue, Cleveland, Ohio | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,336
Cost capitalized subsequent to acquisition	3,268
Gross amount carried at close of current period	6,604
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,185
7208 Euclid Avenue, Cleveland, Ohio | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
4260 Tuller Ridge Rd, Dublin, Ohio | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,030
Cost capitalized subsequent to acquisition	1,881
Gross amount carried at close of current period	2,911
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,483
4260 Tuller Ridge Rd, Dublin, Ohio | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
3366 South Tech Boulevard, Miamisburg, Ohio | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	29,092
Cost capitalized subsequent to acquisition	507
Gross amount carried at close of current period	29,599
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,013
3366 South Tech Boulevard, Miamisburg, Ohio | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
302 South Byrne Rd, Toledo, Ohio | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	602
Cost capitalized subsequent to acquisition	1,081
Gross amount carried at close of current period	1,683
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 752
302 South Byrne Rd, Toledo, Ohio | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Partnership Drive, Oklahoma City, Oklahoma | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	3
Encumbrances	$ 0
Initial cost to Company	11,437
Cost capitalized subsequent to acquisition	313
Gross amount carried at close of current period	11,750
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,286
Partnership Drive, Oklahoma City, Oklahoma | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
7530 N. Leadbetter Road, Portland, Oregon | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	5,187
Cost capitalized subsequent to acquisition	1,874
Gross amount carried at close of current period	7,061
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,170
7530 N. Leadbetter Road, Portland, Oregon | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Branchton Rd, Boyers, Pennsylvania | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	3
Encumbrances	$ 0
Initial cost to Company	21,166
Cost capitalized subsequent to acquisition	232,609
Gross amount carried at close of current period	253,775
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 61,886
Branchton Rd, Boyers, Pennsylvania | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
800 Carpenters Crossings, Folcroft, Pennsylvania | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,457
Cost capitalized subsequent to acquisition	953
Gross amount carried at close of current period	3,410
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,069
800 Carpenters Crossings, Folcroft, Pennsylvania | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
36 Great Valley Pkwy, Malvern, Pennsylvania | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,397
Cost capitalized subsequent to acquisition	7,076
Gross amount carried at close of current period	9,473
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,420
36 Great Valley Pkwy, Malvern, Pennsylvania | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
2300 Newlins Mill Road, Palmer Township, Pennsylvania | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	18,365
Cost capitalized subsequent to acquisition	9,027
Gross amount carried at close of current period	27,392
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,412
2300 Newlins Mill Road, Palmer Township, Pennsylvania | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Henderson Dr/Elmwood Ave, Sharon Hill, Pennsylvania | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	24,153
Cost capitalized subsequent to acquisition	105
Gross amount carried at close of current period	24,258
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 12,362
Henderson Dr/Elmwood Ave, Sharon Hill, Pennsylvania | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Las Flores Industrial Park, Rio Grande, Puerto Rico | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	4,185
Cost capitalized subsequent to acquisition	3,447
Gross amount carried at close of current period	7,632
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,416
Las Flores Industrial Park, Rio Grande, Puerto Rico | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
24 Snake Hill Road, Chepachet, Rhode Island | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,659
Cost capitalized subsequent to acquisition	2,202
Gross amount carried at close of current period	4,861
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,928
24 Snake Hill Road, Chepachet, Rhode Island | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1061 Carolina Pines Road, Columbia, South Carolina | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	11,776
Cost capitalized subsequent to acquisition	2,340
Gross amount carried at close of current period	14,116
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,223
1061 Carolina Pines Road, Columbia, South Carolina | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
2301 Prosperity Way, Florence, South Carolina | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,846
Cost capitalized subsequent to acquisition	1,258
Gross amount carried at close of current period	4,104
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,217
2301 Prosperity Way, Florence, South Carolina | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Mitchell Street, Knoxville, Tennessee | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	718
Cost capitalized subsequent to acquisition	4,557
Gross amount carried at close of current period	5,275
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,022
Mitchell Street, Knoxville, Tennessee | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
6005 Dana Way, Nashville, Tennessee | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	1,827
Cost capitalized subsequent to acquisition	2,915
Gross amount carried at close of current period	4,742
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,921
6005 Dana Way, Nashville, Tennessee | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
11406 Metric Blvd, Austin, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	5,489
Cost capitalized subsequent to acquisition	2,211
Gross amount carried at close of current period	7,700
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,090
11406 Metric Blvd, Austin, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
6600 Metropolis Drive, Austin, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	4,519
Cost capitalized subsequent to acquisition	454
Gross amount carried at close of current period	4,973
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,358
6600 Metropolis Drive, Austin, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Capital Parkway, Carrollton, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	3
Encumbrances	$ 0
Initial cost to Company	8,299
Cost capitalized subsequent to acquisition	246
Gross amount carried at close of current period	8,545
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,661
Capital Parkway, Carrollton, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1800 Columbian Club Dr, Carrolton, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	19,673
Cost capitalized subsequent to acquisition	1,179
Gross amount carried at close of current period	20,852
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 9,438
1800 Columbian Club Dr, Carrolton, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1905 John Connally Dr, Carrolton, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,174
Cost capitalized subsequent to acquisition	791
Gross amount carried at close of current period	2,965
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,387
1905 John Connally Dr, Carrolton, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
13425 Branchview Ln, Dallas, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,518
Cost capitalized subsequent to acquisition	3,680
Gross amount carried at close of current period	7,198
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,193
13425 Branchview Ln, Dallas, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Cockrell Ave, Dallas, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,277
Cost capitalized subsequent to acquisition	1,596
Gross amount carried at close of current period	2,873
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,979
Cockrell Ave, Dallas, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1819 S. Lamar St, Dallas, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,215
Cost capitalized subsequent to acquisition	1,083
Gross amount carried at close of current period	4,298
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,578
1819 S. Lamar St, Dallas, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
2000 Robotics Place Suite B, Fort Worth, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	5,328
Cost capitalized subsequent to acquisition	2,065
Gross amount carried at close of current period	7,393
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,951
2000 Robotics Place Suite B, Fort Worth, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1202 Ave R, Grand Prairie, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	8,354
Cost capitalized subsequent to acquisition	2,173
Gross amount carried at close of current period	10,527
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,947
1202 Ave R, Grand Prairie, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
15333 Hempstead Hwy, Houston, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	3
Encumbrances	$ 0
Initial cost to Company	6,327
Cost capitalized subsequent to acquisition	37,648
Gross amount carried at close of current period	43,975
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 13,034
15333 Hempstead Hwy, Houston, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
2600 Center Street, Houston, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,840
Cost capitalized subsequent to acquisition	2,172
Gross amount carried at close of current period	5,012
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,575
2600 Center Street, Houston, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
3502 Bissonnet St, Houston, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	7,687
Cost capitalized subsequent to acquisition	692
Gross amount carried at close of current period	8,379
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,840
3502 Bissonnet St, Houston, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
5249 Glenmont Ave, Houston, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,467
Cost capitalized subsequent to acquisition	2,401
Gross amount carried at close of current period	5,868
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,753
5249 Glenmont Ave, Houston, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
5707 Chimney Rock, Houston, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,032
Cost capitalized subsequent to acquisition	1,189
Gross amount carried at close of current period	2,221
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,089
5707 Chimney Rock, Houston, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
5757 Royalton Dr, Houston, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,795
Cost capitalized subsequent to acquisition	994
Gross amount carried at close of current period	2,789
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,300
5757 Royalton Dr, Houston, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
6203 Bingle Rd, Houston, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,188
Cost capitalized subsequent to acquisition	11,476
Gross amount carried at close of current period	14,664
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 8,672
6203 Bingle Rd, Houston, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
7800 Westpark, Houston, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	6,323
Cost capitalized subsequent to acquisition	1,276
Gross amount carried at close of current period	7,599
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,832
7800 Westpark, Houston, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
9601 West Tidwell, Houston, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,680
Cost capitalized subsequent to acquisition	2,305
Gross amount carried at close of current period	3,985
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,302
9601 West Tidwell, Houston, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
15300 FM 1825, Pflugerville, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	3,811
Cost capitalized subsequent to acquisition	7,952
Gross amount carried at close of current period	11,763
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,042
15300 FM 1825, Pflugerville, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
930 Avenue B, San Antonio, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	393
Cost capitalized subsequent to acquisition	245
Gross amount carried at close of current period	638
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 259
930 Avenue B, San Antonio, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
931 North Broadway, San Antonio, Texas | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,526
Cost capitalized subsequent to acquisition	1,144
Gross amount carried at close of current period	4,670
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,857
931 North Broadway, San Antonio, Texas | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1665 S. 5350 West, Salt Lake City, Utah | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	6,239
Cost capitalized subsequent to acquisition	4,270
Gross amount carried at close of current period	10,509
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,236
1665 S. 5350 West, Salt Lake City, Utah | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
11052 Lakeridge Pkwy, Ashland, Virginia | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,709
Cost capitalized subsequent to acquisition	1,924
Gross amount carried at close of current period	3,633
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,842
11052 Lakeridge Pkwy, Ashland, Virginia | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
2301 International Parkway, Fredericksburg, Virginia | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	20,980
Cost capitalized subsequent to acquisition	30
Gross amount carried at close of current period	21,010
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,777
2301 International Parkway, Fredericksburg, Virginia | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
4555 Progress Road, Norfolk, Virginia | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	6,527
Cost capitalized subsequent to acquisition	1,088
Gross amount carried at close of current period	7,615
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,297
4555 Progress Road, Norfolk, Virginia | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
3725 Thirlane Rd. N.W., Roanoke, Virginia | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,577
Cost capitalized subsequent to acquisition	172
Gross amount carried at close of current period	2,749
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,119
3725 Thirlane Rd. N.W., Roanoke, Virginia | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
7700-7730 Southern Dr, Springfield, Virginia | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	14,167
Cost capitalized subsequent to acquisition	2,651
Gross amount carried at close of current period	16,818
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 9,475
7700-7730 Southern Dr, Springfield, Virginia | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
8001 Research Way, Springfield, Virginia | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	5,230
Cost capitalized subsequent to acquisition	2,790
Gross amount carried at close of current period	8,020
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,384
8001 Research Way, Springfield, Virginia | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
22445 Randolph Dr, Sterling, Virginia | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	7,598
Cost capitalized subsequent to acquisition	3,724
Gross amount carried at close of current period	11,322
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 6,018
22445 Randolph Dr, Sterling, Virginia | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
307 South 140th St, Burien, Washington | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,078
Cost capitalized subsequent to acquisition	2,367
Gross amount carried at close of current period	4,445
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,323
307 South 140th St, Burien, Washington | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
8908 W. Hallett Rd, Cheney, Washington | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	510
Cost capitalized subsequent to acquisition	4,259
Gross amount carried at close of current period	4,769
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,066
8908 W. Hallett Rd, Cheney, Washington | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
6600 Hardeson Rd, Everett, Washington | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	5,399
Cost capitalized subsequent to acquisition	3,404
Gross amount carried at close of current period	8,803
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,543
6600 Hardeson Rd, Everett, Washington | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
19826 Russell Rd, South, Kent, Washington | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	14,793
Cost capitalized subsequent to acquisition	9,752
Gross amount carried at close of current period	24,545
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 10,705
19826 Russell Rd, South, Kent, Washington | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1201 N. 96th St, Seattle, Washington | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	4,496
Cost capitalized subsequent to acquisition	2,112
Gross amount carried at close of current period	6,608
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,556
1201 N. 96th St, Seattle, Washington | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
4330 South Grove Road, Spokane, Washington | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,906
Cost capitalized subsequent to acquisition	850
Gross amount carried at close of current period	4,756
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 472
4330 South Grove Road, Spokane, Washington | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
12021 West Bluemound Road, Wauwatosa, Wisconsin | United States
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,307
Cost capitalized subsequent to acquisition	2,124
Gross amount carried at close of current period	3,431
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,445
12021 West Bluemound Road, Wauwatosa, Wisconsin | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
One Command Court, Bedford | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,847
Cost capitalized subsequent to acquisition	4,482
Gross amount carried at close of current period	8,329
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,126
One Command Court, Bedford | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
195 Summerlea Road, Brampton | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	5,403
Cost capitalized subsequent to acquisition	6,479
Gross amount carried at close of current period	11,882
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,357
195 Summerlea Road, Brampton | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
10 Tilbury Court, Brampton | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	5,007
Cost capitalized subsequent to acquisition	17,257
Gross amount carried at close of current period	22,264
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 7,916
10 Tilbury Court, Brampton | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
8825 Northbrook Court, Burnaby | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	8,091
Cost capitalized subsequent to acquisition	2,062
Gross amount carried at close of current period	10,153
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,648
8825 Northbrook Court, Burnaby | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
8088 Glenwood Drive, Burnaby | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	4,326
Cost capitalized subsequent to acquisition	7,114
Gross amount carried at close of current period	11,440
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,658
8088 Glenwood Drive, Burnaby | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
5811 26th Street S.E., Calgary | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	14,658
Cost capitalized subsequent to acquisition	8,509
Gross amount carried at close of current period	23,167
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 11,114
5811 26th Street S.E., Calgary | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
3905-101 Street, Edmonton | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,020
Cost capitalized subsequent to acquisition	640
Gross amount carried at close of current period	2,660
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,578
3905-101 Street, Edmonton | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
68 Grant Timmins Drive, Kingston | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,639
Cost capitalized subsequent to acquisition	660
Gross amount carried at close of current period	4,299
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 330
68 Grant Timmins Drive, Kingston | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
3005 Boul. Jean-Baptiste Deschamps, Lachine | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,751
Cost capitalized subsequent to acquisition	138
Gross amount carried at close of current period	2,889
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,382
3005 Boul. Jean-Baptiste Deschamps, Lachine | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1655 Fleetwood, Laval | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	8,196
Cost capitalized subsequent to acquisition	18,161
Gross amount carried at close of current period	26,357
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 12,687
1655 Fleetwood, Laval | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
4005 Richelieu, Montreal | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,800
Cost capitalized subsequent to acquisition	2,531
Gross amount carried at close of current period	4,331
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,699
4005 Richelieu, Montreal | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1209 Algoma Rd, Ottawa | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,059
Cost capitalized subsequent to acquisition	6,899
Gross amount carried at close of current period	7,958
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,019
1209 Algoma Rd, Ottawa | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1650 Comstock Rd, Ottawa | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	7,478
Cost capitalized subsequent to acquisition	(70)
Gross amount carried at close of current period	7,408
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,647
1650 Comstock Rd, Ottawa | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
235 Edson Street, Saskatoon | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	829
Cost capitalized subsequent to acquisition	1,676
Gross amount carried at close of current period	2,505
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 855
235 Edson Street, Saskatoon | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
640 Coronation Drive, Scarborough | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,853
Cost capitalized subsequent to acquisition	1,208
Gross amount carried at close of current period	3,061
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,279
640 Coronation Drive, Scarborough | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
610 Sprucewood Ave, Windsor | Canada
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,243
Cost capitalized subsequent to acquisition	667
Gross amount carried at close of current period	1,910
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 676
610 Sprucewood Ave, Windsor | Canada | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Gewerbeparkstr. 3, Vienna, Austria | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	6,542
Cost capitalized subsequent to acquisition	8,051
Gross amount carried at close of current period	14,593
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,514
Gewerbeparkstr. 3, Vienna, Austria | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Woluwelaan 147, Diegem, Belgium | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,541
Cost capitalized subsequent to acquisition	6,309
Gross amount carried at close of current period	8,850
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,218
Woluwelaan 147, Diegem, Belgium | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Stupničke Šipkovine 62, Zagreb, Croatia | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,408
Cost capitalized subsequent to acquisition	572
Gross amount carried at close of current period	1,980
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 33
Stupničke Šipkovine 62, Zagreb, Croatia | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Kratitirion 9 Kokkinotrimithia Industrial District, Nicosia, Cyprus | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,136
Cost capitalized subsequent to acquisition	3,227
Gross amount carried at close of current period	6,363
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 434
Kratitirion 9 Kokkinotrimithia Industrial District, Nicosia, Cyprus | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Karyatidon 1, Agios Sylas Industrial Area (3rd), Limassol, Cyprus | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,935
Cost capitalized subsequent to acquisition	(46)
Gross amount carried at close of current period	1,889
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 158
Karyatidon 1, Agios Sylas Industrial Area (3rd), Limassol, Cyprus | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
65 Egerton Road, Birmingham, England | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	6,980
Cost capitalized subsequent to acquisition	1,550
Gross amount carried at close of current period	8,530
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,888
65 Egerton Road, Birmingham, England | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Corby 278, Long Croft Road, Corby, England | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	20,486
Cost capitalized subsequent to acquisition	744
Gross amount carried at close of current period	21,230
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 537
Corby 278, Long Croft Road, Corby, England | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Otterham Quay Lane, Gillingham, England | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	9
Encumbrances	$ 0
Initial cost to Company	7,418
Cost capitalized subsequent to acquisition	3,430
Gross amount carried at close of current period	10,848
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,269
Otterham Quay Lane, Gillingham, England | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Pennine Way, Hemel Hempstead, England | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	10,847
Cost capitalized subsequent to acquisition	6,113
Gross amount carried at close of current period	16,960
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 7,002
Pennine Way, Hemel Hempstead, England | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Kemble Industrial Park, Kemble, England | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	5,277
Cost capitalized subsequent to acquisition	6,990
Gross amount carried at close of current period	12,267
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 8,524
Kemble Industrial Park, Kemble, England | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Gayton Road, Kings Lynn, England | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	3
Encumbrances	$ 0
Initial cost to Company	3,119
Cost capitalized subsequent to acquisition	1,829
Gross amount carried at close of current period	4,948
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,872
Gayton Road, Kings Lynn, England | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Cody Road, London, England | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	3
Encumbrances	$ 0
Initial cost to Company	20,307
Cost capitalized subsequent to acquisition	8,816
Gross amount carried at close of current period	29,123
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 11,398
Cody Road, London, England | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
17 Broadgate, Oldham, England | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	4,039
Cost capitalized subsequent to acquisition	342
Gross amount carried at close of current period	4,381
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,342
17 Broadgate, Oldham, England | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Harpway Lane, Sopley, England | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	681
Cost capitalized subsequent to acquisition	1,445
Gross amount carried at close of current period	2,126
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,384
Harpway Lane, Sopley, England | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Unit 1A Broadmoor Road, Swindom, England | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,636
Cost capitalized subsequent to acquisition	478
Gross amount carried at close of current period	3,114
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,190
Unit 1A Broadmoor Road, Swindom, England | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Jeumont-Schneider, Champagne Sur Seine, France | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	3
Encumbrances	$ 0
Initial cost to Company	1,750
Cost capitalized subsequent to acquisition	2,429
Gross amount carried at close of current period	4,179
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,214
Jeumont-Schneider, Champagne Sur Seine, France | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Bat I-VII Rue de Osiers, Coignieres, France | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	4
Encumbrances	$ 0
Initial cost to Company	21,318
Cost capitalized subsequent to acquisition	(747)
Gross amount carried at close of current period	20,571
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,904
Bat I-VII Rue de Osiers, Coignieres, France | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
26 Rue de I Industrie, Fergersheim, France | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,322
Cost capitalized subsequent to acquisition	(80)
Gross amount carried at close of current period	1,242
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 235
26 Rue de I Industrie, Fergersheim, France | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Bat A, B, C1, C2, C3 Rue Imperiale, Gue de Longroi, France | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,390
Cost capitalized subsequent to acquisition	700
Gross amount carried at close of current period	4,090
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 846
Bat A, B, C1, C2, C3 Rue Imperiale, Gue de Longroi, France | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Le Petit Courtin Site de Dois, Gueslin, Mingieres, France | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	14,141
Cost capitalized subsequent to acquisition	(272)
Gross amount carried at close of current period	13,869
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,838
Le Petit Courtin Site de Dois, Gueslin, Mingieres, France | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
ZI des Sables, Morangis, France | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 582
Initial cost to Company	12,407
Cost capitalized subsequent to acquisition	15,136
Gross amount carried at close of current period	27,543
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 18,712
ZI des Sables, Morangis, France | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
45 Rue de Savoie, Manissieux, Saint Priest, France | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	5,546
Cost capitalized subsequent to acquisition	(185)
Gross amount carried at close of current period	5,361
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 779
45 Rue de Savoie, Manissieux, Saint Priest, France | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Gutenbergstrabe 55, Hamburg, Germany | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	4,022
Cost capitalized subsequent to acquisition	742
Gross amount carried at close of current period	4,764
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 966
Gutenbergstrabe 55, Hamburg, Germany | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Brommer Weg 1, Wipshausen, Germany | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,220
Cost capitalized subsequent to acquisition	1,571
Gross amount carried at close of current period	4,791
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,272
Brommer Weg 1, Wipshausen, Germany | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Warehouse and Offices 4 Springhill, Cork, Ireland | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	9,040
Cost capitalized subsequent to acquisition	2,534
Gross amount carried at close of current period	11,574
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,604
Warehouse and Offices 4 Springhill, Cork, Ireland | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
17 Crag Terrace, Dublin, Ireland | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,818
Cost capitalized subsequent to acquisition	742
Gross amount carried at close of current period	3,560
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,333
17 Crag Terrace, Dublin, Ireland | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Damastown Industrial Park, Dublin, Ireland | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	16,034
Cost capitalized subsequent to acquisition	6,983
Gross amount carried at close of current period	23,017
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 7,689
Damastown Industrial Park, Dublin, Ireland | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Portsmuiden 46, Amsterdam, The Netherlands | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,852
Cost capitalized subsequent to acquisition	1,824
Gross amount carried at close of current period	3,676
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,255
Portsmuiden 46, Amsterdam, The Netherlands | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Schepenbergweg 1, Amsterdam, The Netherlands | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,258
Cost capitalized subsequent to acquisition	(657)
Gross amount carried at close of current period	601
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 300
Schepenbergweg 1, Amsterdam, The Netherlands | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Vareseweg 130, Rotterdam, The Netherlands | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,357
Cost capitalized subsequent to acquisition	1,022
Gross amount carried at close of current period	2,379
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,691
Vareseweg 130, Rotterdam, The Netherlands | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Howemoss Drive, Aberdeen, Scotland | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	6,970
Cost capitalized subsequent to acquisition	5,556
Gross amount carried at close of current period	12,526
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,912
Howemoss Drive, Aberdeen, Scotland | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Traquair Road, Innerleithen, Scotland | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	113
Cost capitalized subsequent to acquisition	2,170
Gross amount carried at close of current period	2,283
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,101
Traquair Road, Innerleithen, Scotland | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Nettlehill Road, Houston Industrial Estate, Livingston, Scotland | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	11,517
Cost capitalized subsequent to acquisition	25,433
Gross amount carried at close of current period	36,950
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 17,916
Nettlehill Road, Houston Industrial Estate, Livingston, Scotland | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Av Madrid s/n Poligono Industrial Matillas, Alcala de Henares, Spain | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	186
Cost capitalized subsequent to acquisition	317
Gross amount carried at close of current period	503
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 264
Av Madrid s/n Poligono Industrial Matillas, Alcala de Henares, Spain | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Calle Bronce, 37, Chiloeches, Spain | United States | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Calle Bronce, 37, Chiloeches, Spain | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	11,011
Cost capitalized subsequent to acquisition	1,845
Gross amount carried at close of current period	12,856
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,088
Ctra M.118 , Km.3 Parcela 3, Madrid, Spain | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	3,981
Cost capitalized subsequent to acquisition	5,719
Gross amount carried at close of current period	9,700
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 6,460
Ctra M.118 , Km.3 Parcela 3, Madrid, Spain | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Fundicion 8, Rivas-Vaciamadrid, Spain | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Abanto Ciervava, Spain | Europe
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	1,053
Cost capitalized subsequent to acquisition	(75)
Gross amount carried at close of current period	978
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 446
Abanto Ciervava, Spain | Europe | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Amancio Alcorta 2396, Buenos Aires, Argentina | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	655
Cost capitalized subsequent to acquisition	1,188
Gross amount carried at close of current period	1,843
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 535
Amancio Alcorta 2396, Buenos Aires, Argentina | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Azara 1245, Buenos Aires, Argentina | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	166
Cost capitalized subsequent to acquisition	(162)
Gross amount carried at close of current period	4
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 0
Azara 1245, Buenos Aires, Argentina | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Saraza 6135, Buenos Aires, Argentina | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	144
Cost capitalized subsequent to acquisition	98
Gross amount carried at close of current period	242
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 52
Saraza 6135, Buenos Aires, Argentina | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Spegazzini, Ezeiza Buenos Aires, Argentina | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	12,773
Cost capitalized subsequent to acquisition	(9,554)
Gross amount carried at close of current period	3,219
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 582
Spegazzini, Ezeiza Buenos Aires, Argentina | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Av Ernest de Moraes 815, Bairro Fim do Campo, Jarinu Brazil | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	12,562
Cost capitalized subsequent to acquisition	(2,267)
Gross amount carried at close of current period	10,295
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,524
Av Ernest de Moraes 815, Bairro Fim do Campo, Jarinu Brazil | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Rua Peri 80, Jundiai, Brazil | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	8,894
Cost capitalized subsequent to acquisition	(1,760)
Gross amount carried at close of current period	7,134
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,141
Rua Peri 80, Jundiai, Brazil | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Francisco de Souza e Melo, Rio de Janerio, Brazil | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	3
Encumbrances	$ 0
Initial cost to Company	1,868
Cost capitalized subsequent to acquisition	10,436
Gross amount carried at close of current period	12,304
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,341
Francisco de Souza e Melo, Rio de Janerio, Brazil | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Hortolandia, Sao Paulo, Brazil | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	24,078
Cost capitalized subsequent to acquisition	1,279
Gross amount carried at close of current period	25,357
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 3,569
Hortolandia, Sao Paulo, Brazil | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
El Taqueral 99, Santiago, Chile | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	2,629
Cost capitalized subsequent to acquisition	32,773
Gross amount carried at close of current period	35,402
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 11,212
El Taqueral 99, Santiago, Chile | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Panamericana Norte 18900, Santiago, Chile | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	5
Encumbrances	$ 0
Initial cost to Company	4,001
Cost capitalized subsequent to acquisition	18,831
Gross amount carried at close of current period	22,832
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 7,261
Panamericana Norte 18900, Santiago, Chile | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Avenida Prolongacion del Colli 1104, Guadalajara, Mexico | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	374
Cost capitalized subsequent to acquisition	1,292
Gross amount carried at close of current period	1,666
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,016
Avenida Prolongacion del Colli 1104, Guadalajara, Mexico | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Privada Las Flores No. 25 (G3), Guadalajara, Mexico | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	905
Cost capitalized subsequent to acquisition	1,278
Gross amount carried at close of current period	2,183
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 998
Privada Las Flores No. 25 (G3), Guadalajara, Mexico | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Tula KM Parque de Las, Huehuetoca, Mexico | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	19,937
Cost capitalized subsequent to acquisition	(771)
Gross amount carried at close of current period	19,166
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,864
Tula KM Parque de Las, Huehuetoca, Mexico | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Carretera Pesqueria Km2.5(M3), Monterrey, Mexico | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	3,537
Cost capitalized subsequent to acquisition	3,691
Gross amount carried at close of current period	7,228
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,636
Carretera Pesqueria Km2.5(M3), Monterrey, Mexico | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Lote 2, Manzana A, (T2& T3), Toluca, Mexico | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	2,204
Cost capitalized subsequent to acquisition	4,790
Gross amount carried at close of current period	6,994
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,167
Lote 2, Manzana A, (T2& T3), Toluca, Mexico | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Prolongacion de la Calle 7 (T4), Toluca, Mexico | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	7,544
Cost capitalized subsequent to acquisition	15,171
Gross amount carried at close of current period	22,715
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 7,341
Prolongacion de la Calle 7 (T4), Toluca, Mexico | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Panamericana Sur, KM 57.5, Lima, Peru | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	7
Encumbrances	$ 0
Initial cost to Company	1,549
Cost capitalized subsequent to acquisition	893
Gross amount carried at close of current period	2,442
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,203
Panamericana Sur, KM 57.5, Lima, Peru | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Av. Elmer Faucett 3462, Lima, Peru | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 1,232
Initial cost to Company	4,112
Cost capitalized subsequent to acquisition	5,314
Gross amount carried at close of current period	9,426
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 4,656
Av. Elmer Faucett 3462, Lima, Peru | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Calle Los Claveles-Seccion 3, Lima, Peru | Latin America
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	8,179
Cost capitalized subsequent to acquisition	32,720
Gross amount carried at close of current period	40,899
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 9,227
Calle Los Claveles-Seccion 3, Lima, Peru | Latin America | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Warehouse No 4, Shanghai, China | Asia Pacific
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,530
Cost capitalized subsequent to acquisition	671
Gross amount carried at close of current period	2,201
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 373
Warehouse No 4, Shanghai, China | Asia Pacific | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
Jalan Karanggan Muda Raya No 59, Bogor Indonesia | Asia Pacific
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	7,897
Cost capitalized subsequent to acquisition	(316)
Gross amount carried at close of current period	7,581
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,195
Life on which depreciation in latest income statement is computed	40 years
1 Serangoon North Avenue 6, Singapore | Asia | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
1 Serangoon North Avenue 6, Singapore | Asia Pacific
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	58,637
Cost capitalized subsequent to acquisition	21,633
Gross amount carried at close of current period	80,270
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 5,058
2 Yung Ho Road, Singapore | Asia Pacific
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	10,395
Cost capitalized subsequent to acquisition	871
Gross amount carried at close of current period	11,266
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 836
2 Yung Ho Road, Singapore | Asia Pacific | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
26 Chin Bee Drive, Singapore | Asia Pacific
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	15,699
Cost capitalized subsequent to acquisition	1,315
Gross amount carried at close of current period	17,014
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 1,262
26 Chin Bee Drive, Singapore | Asia Pacific | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
IC1 69 Moo 2, Soi Wat Namdaeng, Bangkok, Thailand | Asia Pacific
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	2
Encumbrances	$ 0
Initial cost to Company	13,226
Cost capitalized subsequent to acquisition	6,136
Gross amount carried at close of current period	19,362
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 2,659
IC1 69 Moo 2, Soi Wat Namdaeng, Bangkok, Thailand | Asia Pacific | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
8 Whitestone Drive, Austins Ferry, Australia | Asia Pacific | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
8 Whitestone Drive, Austins Ferry, Australia | Australia
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	681
Cost capitalized subsequent to acquisition	2,532
Gross amount carried at close of current period	3,213
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 404
6 Norwich Street, South Launceston, Australia | Asia Pacific | Maximum
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Life on which depreciation in latest income statement is computed	40 years
6 Norwich Street, South Launceston, Australia | Australia
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Facilities | facility	1
Encumbrances	$ 0
Initial cost to Company	1,090
Cost capitalized subsequent to acquisition	(83)
Gross amount carried at close of current period	1,007
Accumulated Depreciation of Real Estate Assets, As Reported on Schedule III	$ 93