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Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2021
Accounting Policies [Abstract]  
Schedule of allowance for credit loss Rollforward of allowance for doubtful accounts and credit memo reserves for the three months ended March 31, 2021 is as follows:
Balance as of December 31, 2020$56,981 
Credit memos charged to revenue13,026 
Allowance for bad debts charged to expense9,850 
Deductions and other(1)
(19,114)
Balance as of March 31, 2021$60,743 
(1)Primarily consists of the issuance of credit memos, the write-off of accounts receivable and the impact associated with currency translation adjustments.
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 March 31, 2021 and December 31, 2020 are as follows:
DESCRIPTIONMARCH 31, 2021DECEMBER 31, 2020
Assets:
Operating lease right-of-use assets$2,205,299 $2,196,502 
Financing lease right-of-use assets, net of accumulated depreciation(1)
300,399 310,534 
Liabilities:
Current
Operating lease liabilities$248,319 $250,239 
Financing lease liabilities(1)
42,692 43,149 
Long-term
Operating lease liabilities2,061,140 2,044,598 
Financing lease liabilities(1)
311,448 323,162 
(1)Financing lease right-of-use assets, current financing lease liabilities and long-term financing lease liabilities are included within Property, Plant and Equipment, Net, Current portion of long-term debt and Long-term Debt, net of current portion, respectively, within our Condensed Consolidated Balance Sheets.
Schedule of lease, cost
The components of the lease expense for the three months ended March 31, 2021 and 2020 are as follows:
THREE MONTHS ENDED MARCH 31,
DESCRIPTION20212020
Operating lease cost(1)
$132,675 $123,289 
Financing lease cost:
Depreciation of financing lease right-of-use assets$12,648 $12,955 
Interest expense for financing lease liabilities4,975 4,844 
(1)Operating lease cost, the majority of which is included in Cost of sales, includes variable lease costs of $28,368 and $27,805 for the three months ended March 31, 2021 and 2020, respectively.
Supplemental cash flow information relating to our leases for the three months ended March 31, 2021 and 2020 is as follows:
THREE MONTHS ENDED MARCH 31,
CASH PAID FOR AMOUNTS INCLUDED IN MEASUREMENT OF LEASE LIABILITIES:20212020
Operating cash flows used in operating leases$93,645 $86,418 
Operating cash flows used in financing leases (interest)4,975 4,844 
Financing cash flows used in financing leases12,441 12,739 
NON-CASH ITEMS:
Operating lease modifications and reassessments$31,994 $34,916 
New operating leases (including acquisitions and sale-leaseback transactions)48,200 110,609 
Schedule of changes in the carrying value of goodwill attributable to each reportable operating segment
The changes in the carrying value of goodwill attributable to each reportable operating segment for the three months ended March 31, 2021 are as follows:
GLOBAL RIM BUSINESSGLOBAL DATA CENTER BUSINESSCORPORATE AND OTHER BUSINESSTOTAL CONSOLIDATED
Goodwill balance, net of accumulated amortization as of
December 31, 2020
$4,024,182 $436,987 $96,440 $4,557,609 
Fair value and other adjustments(5,804)— — (5,804)
Currency effects(24,298)(6,359)(373)(31,030)
Goodwill balance, net accumulated amortization as of March 31, 2021$3,994,080 $430,628 $96,067 $4,520,775 
Accumulated goodwill impairment balance as of March 31, 2021$132,409 $— $26,011 $158,420 
Schedule of assets and liabilities carried at fair value measured on a recurring basis
The assets and liabilities carried at fair value measured on a recurring basis as of March 31, 2021 and December 31, 2020 are as follows:
  FAIR VALUE MEASUREMENTS AT MARCH 31, 2021 USING
DESCRIPTIONTOTAL CARRYING
VALUE AT
MARCH 31, 2021
QUOTED PRICES IN
ACTIVE MARKETS
(LEVEL 1)
SIGNIFICANT OTHER
OBSERVABLE INPUTS
(LEVEL 2)
SIGNIFICANT
UNOBSERVABLE
INPUTS (LEVEL 3)
Money Market Funds$7,673 $— $7,673 $— 
Time Deposits1,291 — 1,291 — 
Trading Securities11,323 11,067  256  — 
Derivative Liabilities34,497 — 34,497 — 
  FAIR VALUE MEASUREMENTS AT DECEMBER 31, 2020 USING
DESCRIPTIONTOTAL CARRYING
VALUE AT
DECEMBER 31, 2020
QUOTED PRICES IN
ACTIVE MARKETS
(LEVEL 1)
SIGNIFICANT OTHER
OBSERVABLE INPUTS
(LEVEL 2)
SIGNIFICANT
UNOBSERVABLE
INPUTS (LEVEL 3)
Money Market Funds$62,657 $— $62,657 $— 
Time Deposits2,121 — 2,121 — 
Trading Securities10,892 10,636  256  — 
Derivative Liabilities49,703 — 49,703 — 
Schedule of changes in accumulated other comprehensive items, net
The changes in accumulated other comprehensive items, net for the three months ended March 31, 2021 and 2020 are as follows:
THREE MONTHS ENDED MARCH 31, 2021THREE MONTHS ENDED MARCH 31, 2020
 FOREIGN
CURRENCY
TRANSLATION AND OTHER
ADJUSTMENTS
CHANGE IN FAIR VALUE OF
DERIVATIVE
INSTRUMENTS
TOTALFOREIGN
CURRENCY
TRANSLATION AND OTHER
ADJUSTMENTS
CHANGE IN FAIR VALUE OF DERIVATIVE INSTRUMENTSTOTAL
Beginning of Period$(206,190)$(49,703)$(255,893)$(252,825)$(9,756)$(262,581)
Other comprehensive (loss) income:
Foreign currency translation and other adjustments(66,224)— (66,224)(222,305)— (222,305)
Change in fair value of derivative instruments— 15,206 15,206 — (8,362)(8,362)
Total other comprehensive (loss) income(66,224)15,206 (51,018)(222,305)(8,362)(230,667)
End of Period$(272,414)$(34,497)$(306,911)$(475,130)$(18,118)$(493,248)
Schedule of amortization expense associated with commissions asset and Intake Costs
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 (collectively, “Contract Fulfillment Costs”). Contract Fulfillment Costs as of March 31, 2021 and December 31, 2020, are as follows:
MARCH 31, 2021DECEMBER 31, 2020
GROSS
CARRYING
AMOUNT
ACCUMULATED
AMORTIZATION
NET
CARRYING
AMOUNT
GROSS
CARRYING
AMOUNT
ACCUMULATED
AMORTIZATION
NET
CARRYING
AMOUNT
Intake Costs asset$66,337 $(35,904)$30,433 $63,721 $(33,352)$30,369 
Commissions asset99,721 (43,125)56,596 91,069 (38,787)52,282 
Schedule of deferred revenue liabilities
Deferred revenue liabilities are reflected in our Condensed Consolidated Balance Sheets as follows:
DESCRIPTIONLOCATION IN BALANCE SHEETMARCH 31, 2021DECEMBER 31, 2020
Deferred revenue - CurrentDeferred revenue$284,974 $295,785 
Deferred revenue - Long-termOther Long-term Liabilities36,581 35,612 
Schedule of revenue
Our Global Data Center Business features storage rental provided to customers at contractually specified rates over a fixed contractual period, which are accounted for in accordance with Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842), as amended (“ASU 2016-02”). Storage rental revenue, including revenue associated with power and connectivity, associated with our Global Data Center Business for the three months ended March 31, 2021 and 2020 are as follows:
THREE MONTHS ENDED MARCH 31,
20212020
Storage rental revenue(1)
$67,157 $64,595 
(1)Revenue associated with power and connectivity included within storage rental revenue was $13,133 and $11,413 for the three months ended March 31, 2021 and 2020, respectively.
Schedule of stock-based compensation expense
Stock-based compensation expense for the cost of stock options, restricted stock units (“RSUs”), performance units (“PUs”) and shares of stock issued under our employee stock purchase plan (collectively, “Employee Stock-Based Awards”) for the three months ended March 31, 2021 and 2020 is as follows:
THREE MONTHS ENDED MARCH 31,
20212020
Stock-based compensation expense$10,953 $6,527 
Schedule of vested and expected to vest
The fair value of RSUs and earned PUs that vested during the three months ended March 31, 2021 and 2020 is as follows:
THREE MONTHS ENDED MARCH 31,
 20212020
Fair value of RSUs vested$19,861 $18,379 
Fair value of earned PUs that vested5,591 10,890 
Schedule of other expense (income), net
Consolidated other expense (income), net for the three months ended March 31, 2021 and 2020 consists of the following:
 THREE MONTHS ENDED MARCH 31,
DESCRIPTION20212020
Foreign currency transaction losses (gains), net$2,314 $(37,399)
Other, net(1)
2,399 (5,327)
Other Expense (Income), Net$4,713 $(42,726)
(1)Other, net for the three months ended March 31, 2021 is primarily comprised of losses on our equity method investments. Other, net for the three months ended March 31, 2020 is primarily comprised of a gain on our previously held 25% equity investment in OSG Records Management (Europe) Limited (“OSG”), which is partially offset by losses on our equity method investments.
Schedule of income taxes
Our effective tax rates for the three months ended March 31, 2021 and 2020 are as follows:
 THREE MONTHS ENDED MARCH 31,
2021(1)
2020(2)
Effective Tax Rate23.9 %13.0 %
(1)The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three months ended March 31, 2021 were the benefits derived from the dividends paid deduction and the impacts of differences in the tax rates at which our foreign earnings are subject.
(2)The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three months ended March 31, 2020 were the benefits derived from the dividends paid deduction and foreign exchange losses in different jurisdictions with different tax rates as well as the impacts of differences in the tax rates at which our foreign earnings are subject.
Schedule of calculation of basic and diluted net income (loss) per share attributable to the entity
The calculation of basic and diluted income (loss) per share for the three months ended March 31, 2021 and 2020 are as follows:
 
THREE MONTHS ENDED MARCH 31,
 20212020
Net Income (Loss)$46,631 $64,892 
Less: Net Income (Loss) Attributable to Noncontrolling Interests1,028 917 
Net Income (Loss) Attributable to Iron Mountain Incorporated (utilized in numerator of Earnings Per Share calculation)$45,603 $63,975 
Weighted-average shares—basic288,756,000 287,840,000 
Effect of dilutive potential stock options56,437 51,799 
Effect of dilutive potential RSUs and PUs715,850 467,334 
Weighted-average shares—diluted289,528,287 288,359,133 
Net Income (Loss) Per Share Attributable to Iron Mountain Incorporated:  
 Basic$0.16 $0.22 
 Diluted$0.16 $0.22 
Antidilutive stock options, RSUs and PUs, excluded from the calculation4,708,068 5,513,714