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Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2020
Accounting Policies [Abstract] |
Schedule of changes in the carrying value of goodwill attributable to each reportable operating segment | The changes in the carrying value of goodwill attributable to each reportable operating segment for the nine months ended September 30, 2020 are as follows:
| Global RIM Business |  | Global Data Center Business |  | Corporate and Other Business |  | Total Consolidated
Goodwill balance, net of accumulated amortization as of December 31, 2019 | $ | 3,942,901 |  |  | $ | 424,568 |  |  | $ | 117,740 |  |  | $ | 4,485,209 |
Non-deductible goodwill acquired during the period | 51,319 |  |  | — |  |  | — |  |  | 51,319 |
Goodwill impairment | — |  |  | — |  |  | (23,000) |  |  | (23,000) |
Fair value and other adjustments | (4,131) |  |  | — |  |  | 403 |  |  | (3,728) |
Currency effects | (54,428) |  |  | 6,026 |  |  | 131 |  |  | (48,271) |
Goodwill balance, net accumulated amortization as of September 30, 2020 | $ | 3,935,661 |  |  | $ | 430,594 |  |  | $ | 95,274 |  |  | $ | 4,461,529 |
Accumulated goodwill impairment balance as of September 30, 2020 | $ | 132,409 |  |  | $ | — |  |  | $ | 26,011 |  |  | $ | 158,420 |
Schedule of amortization expense associated with commissions asset and Intake Costs | Contract fulfillment costs consist of the costs of the initial intake of customer records into physical storage and capitalized commissions asset (collectively, "Contract Fulfillment Costs"), which as of September 30, 2020 and December 31, 2019, are as follows:
|  | September 30, 2020 |  | December 31, 2019
|  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Contract Fulfillment Costs |  | $ | 123,795 |  |  | $ | (57,538) |  |  | $ | 66,257 |  |  | $ | 109,232 |  |  | $ | (50,757) |  |  | $ | 58,475 |
Schedule of deferred revenue liabilities | Deferred revenue liabilities are reflected in our Condensed Consolidated Balance Sheets as follows:
Description |  | September 30, 2020 |  | December 31, 2019
Deferred revenue - Current |  | $ | 244,430 |  |  | $ | 274,036 |
Deferred revenue - Long-term |  | 35,187 |  |  | 36,029 |
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 ASU 2016-02. Storage rental revenue, including revenue associated with power and connectivity, associated with our Global Data Center Business for the three and nine months ended September 30, 2020 and 2019 are as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Storage rental revenue(1) | $ | 68,416 |  |  | $ | 62,001 |  |  | $ | 196,823 |  |  | $ | 182,301 |
______________________________________________________________ (1)Revenue associated with power and connectivity included within storage rental revenue was $12,033 and $34,986 for the three and nine months ended September 30, 2020, respectively, and $12,001 and $31,031 for the three and nine months ended September 30, 2019, respectively.
Schedule of allowance for credit loss | The rollforward of allowance for doubtful accounts and credit memo reserves for the nine months ended September 30, 2020 is as follows:
Balance at December 31, 2019 |  |  |  | $ | 42,856 |
Credit memos charged to revenue |  |  |  | 42,713 |
Allowance for bad debts charged to expense |  |  |  | 25,715 |
Deductions and other(1) |  |  |  | (57,496) |
Balance at September 30, 2020 |  |  |  | $ | 53,788 |
_______________________________________________________________ (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 September 30, 2020 and December 31, 2019 are as follows:
Description |  | September 30, 2020 |  | December 31, 2019
Assets: |  |  |  |
Operating lease right-of-use assets |  | $ | 1,963,019 |  |  | $ | 1,869,101 |
Financing lease right-of-use assets, net of accumulated depreciation(1) |  | 306,640 |  |  | 327,215 |
Liabilities: |  |  |  |
Current |  |  |  |
Operating lease liabilities |  | $ | 236,019 |  |  | $ | 223,249 |
Financing lease liabilities(1) |  | 42,620 |  |  | 46,582 |
Long-term |  |  |  |
Operating lease liabilities |  | 1,818,844 |  |  | 1,728,686 |
Financing lease liabilities(1) |  | 311,387 |  |  | 320,600 |
_______________________________________________________________ (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 and nine months ended September 30, 2020 and 2019 are as follows:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
Description |  | 2020 |  | 2019 |  | 2020 |  | 2019
Operating lease cost(1) |  | $ | 122,737 |  |  | $ | 114,727 |  |  | $ | 365,303 |  |  | $ | 343,282 |
Financing lease cost: |  |  |  |  |  |  |  |
Depreciation of financing lease right-of-use assets |  | $ | 12,973 |  |  | $ | 14,679 |  |  | $ | 38,495 |  |  | $ | 45,950 |
Interest expense for financing lease liabilities |  | 4,891 |  |  | 4,905 |  |  | 14,664 |  |  | 15,972 |
_______________________________________________________________ (1) Operating lease cost, the majority of which is in Cost of sales, includes variable lease costs of $27,486 and $82,287 for the three and nine months ended September 30, 2020, respectively, and $26,121 and $78,712 for the three and nine months ended September 30, 2019, respectively. Supplemental cash flow information relating to our leases for the nine months ended September 30, 2020 and 2019 is as follows:
|  | Nine Months Ended September 30,
Cash paid for amounts included in measurement of lease liabilities: |  | 2020 |  | 2019
Operating cash flows used in operating leases |  | $ | 266,619 |  |  | $ | 252,277 |
Operating cash flows used in financing leases (interest) |  | 14,664 |  |  | 15,972 |
Financing cash flows used in financing leases |  | 36,008 |  |  | 44,808 |
Operating Lease Non-cash items: |  |  |  |
Operating lease modifications and reassessments |  | $ | 89,727 |  |  | $ | 42,418 |
New operating leases (including acquisitions) |  | 173,635 |  |  | 117,193 |
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 and nine months ended September 30, 2020 and 2019 is as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Stock-based compensation expense | $ | 8,946 |  |  | $ | 7,120 |  |  | $ | 35,618 |  |  | $ | 28,140 |
Schedule of vested and expected to vest | The fair value of RSUs and earned PUs that vested during the three and nine months ended September 30, 2020 and 2019 is as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Fair value of RSUs vested | $ | 2,766 |  |  | $ | 3,092 |  |  | $ | 24,411 |  |  | $ | 20,802 |
Fair value of earned PUs that vested | 1,370 |  |  | 1,176 |  |  | 12,421 |  |  | 7,679 |
Schedule of calculation of basic and diluted net income (loss) per share attributable to the entity | The calculation of basic and diluted income (loss) per share for the three and nine months ended September 30, 2020 and 2019 are as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Income (loss) from continuing operations | $ | 38,562 |  |  | $ | 108,284 |  |  | $ | 96,341 |  |  | $ | 231,107 |
Less: Net income (loss) attributable to noncontrolling interests | 168 |  |  | 609 |  |  | 1,058 |  |  | 1,534 |
Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation) | 38,394 |  |  | 107,675 |  |  | 95,283 |  |  | 229,573 |
Income (loss) from discontinued operations, net of tax | — |  |  | — |  |  | — |  |  | 104 |
Net income (loss) attributable to Iron Mountain Incorporated | $ | 38,394 |  |  | $ | 107,675 |  |  | $ | 95,283 |  |  | $ | 229,677 |
Weighted-average shares—basic | 288,403,000 |  |  | 287,152,000 |  |  | 288,105,000 |  |  | 286,869,000 |
Effect of dilutive potential stock options | 14,758 |  |  | 93,752 |  |  | 28,723 |  |  | 157,928 |
Effect of dilutive potential RSUs and PUs | 392,943 |  |  | 445,081 |  |  | 337,588 |  |  | 528,387 |
Weighted-average shares—diluted | 288,810,701 |  |  | 287,690,833 |  |  | 288,471,311 |  |  | 287,555,315 |
Earnings (losses) per share—basic: |  |  |  |  |  |  |
Income (loss) from continuing operations | $ | 0.13 |  |  | $ | 0.37 |  |  | $ | 0.33 |  |  | $ | 0.80 |
Income (loss) from discontinued operations, net of tax | — |  |  | — |  |  | — |  |  | — |
Net income (loss) attributable to Iron Mountain Incorporated | $ | 0.13 |  |  | $ | 0.37 |  |  | $ | 0.33 |  |  | $ | 0.80 |
Earnings (losses) per share—diluted: |  |  |  |  |  |  |
Income (loss) from continuing operations | $ | 0.13 |  |  | $ | 0.37 |  |  | $ | 0.33 |  |  | $ | 0.80 |
Income (loss) from discontinued operations, net of tax | — |  |  | — |  |  | — |  |  | — |
Net income (loss) attributable to Iron Mountain Incorporated | $ | 0.13 |  |  | $ | 0.37 |  |  | $ | 0.33 |  |  | $ | 0.80 |
Antidilutive stock options, RSUs and PUs, excluded from the calculation | 5,529,126 |  |  | 4,782,661 |  |  | 5,959,693 |  |  | 4,590,645 |
Schedule of income taxes | Our effective tax rates for the three and nine months ended September 30, 2020 and 2019 are as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Effective Tax Rate(1) | 26.5 | % |  | 16.8 | % |  | 25.7 | % |  | 15.7 | %
_______________________________________________________________ (1)The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three and nine months ended September 30, 2020 and 2019 were the benefit derived from the dividends paid deduction and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates. In addition, for the three and nine months ended September 30, 2020, the costs associated with Project Summit (as defined in Note 10) are more heavily weighted to our United States qualified REIT subsidiaries, and, therefore, provide no tax benefit.
Schedule of assets and liabilities carried at fair value measured on a recurring basis | The assets and liabilities carried at fair value measured on a recurring basis as of September 30, 2020 and December 31, 2019 are as follows:
|  |  |  | Fair Value Measurements at September 30, 2020 Using
Description |  | Total Carrying Value at September 30, 2020 |  | Quoted prices in active markets (Level 1) |  | Significant other observable inputs (Level 2) |  | Significant unobservable inputs (Level 3)
Money Market Funds |  | $ | 15,030 |  |  | $ | — |  |  | $ | 15,030 |  |  | $ | — |
Trading Securities |  | 11,452 |  |  | 11,095 |  |  | 357 |  |  | — |
Derivative Assets |  | 4,346 |  |  | — |  |  | 4,346 |  |  | — |
Derivative Liabilities |  | 25,609 |  |  | — |  |  | 25,609 |  |  | — |
|  |  |  | Fair Value Measurements at December 31, 2019 Using
Description |  | Total Carrying Value at December 31, 2019 |  | Quoted prices in active markets (Level 1) |  | Significant other observable inputs (Level 2) |  | Significant unobservable inputs (Level 3)
Money Market Funds |  | $ | 13,653 |  |  | $ | — |  |  | $ | 13,653 |  |  | $ | — |
Trading Securities |  | 10,732 |  |  | 10,168 |  |  | 564 |  |  | — |
Derivative Liabilities |  | 9,756 |  |  | — |  |  | 9,756 |  |  | — |
Schedule of changes in accumulated other comprehensive items, net | The changes in accumulated other comprehensive items, net for the three and nine months ended September 30, 2020 and 2019 are as follows:
| Three Months Ended September 30, 2020 |  | Nine Months Ended September 30, 2020
| Foreign Currency Translation and Other Adjustments |  | Change in Fair Value of Derivative Instruments |  | Total |  | Foreign Currency Translation and Other Adjustments |  | Change in Fair Value of Derivative Instruments |  | Total
Beginning of Period | $ | (406,444) |  |  | $ | (21,079) |  |  | $ | (427,523) |  |  | $ | (252,825) |  |  | $ | (9,756) |  |  | $ | (262,581) |
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation and other adjustments | 44,529 |  |  | — |  |  | 44,529 |  |  | (109,090) |  |  | — |  |  | (109,090) |
Change in fair value of derivative instruments | — |  |  | (184) |  |  | (184) |  |  | — |  |  | (11,507) |  |  | (11,507) |
Total other comprehensive income (loss) | 44,529 |  |  | (184) |  |  | 44,345 |  |  | (109,090) |  |  | (11,507) |  |  | (120,597) |
End of Period | $ | (361,915) |  |  | $ | (21,263) |  |  | $ | (383,178) |  |  | $ | (361,915) |  |  | $ | (21,263) |  |  | $ | (383,178) |
| Three Months Ended September 30, 2019 |  | Nine Months Ended September 30, 2019
| Foreign Currency Translation and Other Adjustments |  | Change in Fair Value of Derivative Instruments |  | Total |  | Foreign Currency Translation and Other Adjustments |  | Change in Fair Value of Derivative Instruments |  | Total
Beginning of Period | $ | (253,243) |  |  | $ | (8,578) |  |  | $ | (261,821) |  |  | $ | (264,691) |  |  | $ | (973) |  |  | $ | (265,664) |
Other comprehensive (loss) income: |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation and other adjustments | (82,886) |  |  | — |  |  | (82,886) |  |  | (71,438) |  |  | — |  |  | (71,438) |
Change in fair value of derivative instruments | — |  |  | (1,496) |  |  | (1,496) |  |  | — |  |  | (9,101) |  |  | (9,101) |
Total other comprehensive (loss) income | (82,886) |  |  | (1,496) |  |  | (84,382) |  |  | (71,438) |  |  | (9,101) |  |  | (80,539) |
End of Period | $ | (336,129) |  |  | $ | (10,074) |  |  | $ | (346,203) |  |  | $ | (336,129) |  |  | $ | (10,074) |  |  | $ | (346,203) |
Schedule of other expense (income), net | Consolidated other expense (income), net for the three and nine months ended September 30, 2020 and 2019 consists of the following:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
Description |  | 2020 |  | 2019 |  | 2020 |  | 2019
Foreign currency transaction losses (gains), net |  | $ | 29,635 |  |  | $ | (18,251) |  |  | $ | (6,293) |  |  | $ | (19,885) |
Debt extinguishment expense |  | 51,260 |  |  | — |  |  | 68,300 |  |  | — |
Other, net(1) |  | 2,570 |  |  | 4,836 |  |  | 4,432 |  |  | 6,488 |
Other Expense (Income), Net |  | $ | 83,465 |  |  | $ | (13,415) |  |  | $ | 66,439 |  |  | $ | (13,397) |
_______________________________________________________________ (1) Other, net for the nine months ended September 30, 2020 is primarily comprised of losses on certain of our equity method investments, partially offset by a gain on our previously held 25% equity investment in OSG Records Management (Europe) Limited ("OSG"), as more fully discussed in Note 4.
Schedule of immaterial restatement | The following table sets forth the effect of the change in presentation of Significant Acquisition Costs to certain line items of our Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2019:
| Three Months Ended September 30, 2019 |  | Nine Months Ended September 30, 2019
Cost of sales (excluding depreciation and amortization) | $ | (1,945) |  |  | $ | (4,136) |
Selling, general and administrative | $ | (2,005) |  |  | $ | (4,461) |
Significant Acquisition Costs | $ | 3,950 |  |  | $ | 8,597 |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for outstanding restricted stock units that are fully vested and expected to vest. Includes, but is not limited to, unvested restricted stock units for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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