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Pay vs Performance Disclosure - USD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pay vs Performance Disclosure [Table] |  |  |
Pay vs Performance [Table Text Block] | 2022 PAY VERSUS PERFORMANCE SUMMARY The following table sets forth information concerning the compensation of our principal executive officer (“PEO”) and our other NEOs (“Non- PEO NEOs”) for each of the fiscal years ended December 31, 2022, 2021 and 2020 and our financial performance for each such fiscal year.
|  |  |  |  |  |  |  |  | AVERAGE SUMMARY COMPENSATION TABLE TOTAL FOR NON-PEO NEOs(3) |  |  | AVERAGE COMPENSATION ACTUALLY PAID TO NON-PEO NEOs(4) |  |  | VALUE OF INITIAL FIXED $100 INVESTMENT BASED ON: |  |  |  |  |  |  |
YEAR |  |  | SUMMARY COMPENSATION TABLE TOTAL FOR PEO(1) |  |  | COMPENSATION ACTUALLY PAID TO PEO(2) |  |  |  |  |  |  | TOTAL SHAREHOLDER RETURN |  |  | PEER GROUP TOTAL SHAREHOLDER RETURN(5) |  |  | NET INCOME (MILLIONS)(6) |  |  | REVENUE (MILLIONS)(7) |
(a) |  |  | (b) |  |  | (c) |  |  | (d) |  |  | (e) |  |  | (f) |  |  | (g) |  |  | (h) |  |  | (i) |
2022 |  |  | $ | 15,102,071 |  |  | $ | 14,437,479 |  |  | $ | 3,737,416 |  |  | $ | 4,268,522 |  |  | $ | 189.43 |  |  | $ | 99.82 |  |  | $ | 562.15 |  |  | $ | 5,104 |
2021 |  |  | $ | 17,046,118 |  |  | $ | 59,232,411 |  |  | $ | 3,562,277 |  |  | $ | 7,434,654 |  |  | $ | 189.58 |  |  | $ | 132.23 |  |  | $ | 452.73 |  |  | $ | 4,492 |
2020 |  |  | $ | 12,281,609 |  |  | $ | 13,757,847 |  |  | $ | 3,744,539 |  |  | $ | 3,807,249 |  |  | $ | 100.98 |  |  | $ | 92.43 |  |  | $ | 343.10 |  |  | $ | 4,147 |
Company Selected Measure Name | revenue |  |
Named Executive Officers, Footnote [Text Block] | The dollar amounts reported in column (b) are the amounts of total compensation reported for our CEO, William L. Meaney, in the Summary Compensation Table for fiscal years ended December 31, 2022, December 31, 2021 and December 31, 2020. Mr. Meaney was the CEO for each of the fiscal years presented. |  |
PEO Total Compensation Amount | $ 15,102,071 | $ 17,046,118 | $ 12,281,609
PEO Actually Paid Compensation Amount | $ 14,437,479 | 59,232,411 | 13,757,847
Adjustment To PEO Compensation, Footnote [Text Block] | The dollar amounts reported in column (c) represent the amounts of compensation actually paid to our CEO for the applicable fiscal year, as computed in accordance with applicable SEC rules. The dollar amounts reported may not reflect the actual amount of compensation earned by or paid to our CEO during the applicable fiscal year. In accordance with applicable SEC rules, the following adjustments were made to our CEO’s total compensation for each applicable fiscal year to determine the compensation actually paid to our CEO:
PEO |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
YEAR |  |  | YEAR END FAIR VALUE OF EQUITY AWARDS |  |  | YEAR OVER YEAR CHANGE IN FAIR VALUE OF EQUITY AWARDS GRANTED IN PRIOR YEARS THAT VESTED IN THE YEAR |  |  | FAIR VALUE AS OF VESTING DATE OF EQUITY AWARDS GRANTED AND VESTED IN THE YEAR |  |  | YEAR OVER YEAR CHANGE IN FAIR VALUE OF OUTSTANDING AND UNVESTED EQUITY AWARDS |  |  | FAIR VALUE AT THE END OF THE PRIOR YEAR OF EQUITY AWARDS THAT FAILED TO MEET VESTING CONDITIONS IN THE YEAR |  |  | VALUE OF DIVIDENDS OR OTHER EARNINGS PAID ON STOCK OR OPTION AWARDS NOT OTHERWISE REFLECTED IN FAIR VALUE OR TOTAL COMPENSATION |  |  | TOTAL EQUITY AWARD ADJUSTMENTS |
2022 |  |  | $ | 15,180,077 |  |  | $ | (1,385,555 | ) |  | $ | – |  |  | $ | (4,530,733 | ) |  | $ | – |  |  | $ | 1,494,881 |  |  | $ | 10,758,670 |
2021 |  |  | $ | 30,532,123 |  |  | $ | 22,647,626 |  |  | $ | – |  |  | $ | 1,052,694 |  |  | $ | – |  |  | $ | 576,154 |  |  | $ | 54,808,598 |
2020 |  |  | $ | 9,042,239 |  |  | $ | 536,799 |  |  | $ | – |  |  | $ | 355,676 |  |  | $ | – |  |  | $ | 807,166 |  |  | $ | 10,741,881 |
Non-PEO NEO Average Total Compensation Amount | $ 3,737,416 | 3,562,277 | 3,744,539
Non-PEO NEO Average Compensation Actually Paid Amount | $ 4,268,522 | 7,434,654 | 3,807,249
Adjustment to Non-PEO NEO Compensation Footnote [Text Block] | The dollar amounts reported in column (e) represent the average amount of compensation actually paid to our NEOs as a group (excluding our CEO), as computed in accordance with applicable SEC rules. The dollar amounts reported may not reflect the actual average amount of compensation earned by or paid to the NEOs as a group (excluding our CEO) during the applicable fiscal year. The names of the NEOs (excluding our CEO) included for purposes of calculating the average amounts in each applicable year are as described in footnote (3) above. In accordance with applicable SEC rules, the following adjustments were made to average total compensation for the NEOs as a group (excluding our CEO) for each fiscal year to determine the compensation actually paid, using the same methodology described above in footnote (2) above:
NON-PEO NEOs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
YEAR |  |  | YEAR END FAIR VALUE OF EQUITY AWARDS |  |  | YEAR OVER YEAR CHANGE IN FAIR VALUE OF EQUITY AWARDS GRANTED IN PRIOR YEARS THAT VESTED IN THE YEAR |  |  | FAIR VALUE AS OF VESTING DATE OF EQUITY AWARDS GRANTED AND VESTED IN THE YEAR |  |  | YEAR OVER YEAR CHANGE IN FAIR VALUE OF OUTSTANDING AND UNVESTED EQUITY AWARDS |  |  | FAIR VALUE AT THE END OF THE PRIOR YEAR OF EQUITY AWARDS THAT FAILED TO MEET VESTING CONDITIONS IN THE YEAR |  |  | VALUE OF DIVIDENDS OR OTHER EARNINGS PAID ON STOCK OR OPTION AWARDS NOT OTHERWISE REFLECTED IN FAIR VALUE OR TOTAL COMPENSATION |  |  | TOTAL EQUITY AWARD ADJUSTMENTS |
(b) |  |  | (c) |  |  | (d) |  |  | (e) |  |  | (f) |  |  | (g) |  |  | (h) |  |  | (i) |
2022 |  |  | $ | 2,983,946 |  |  | $ | (101,015 | ) |  | $ | – |  |  | $ | (185,430 | ) |  | $ | – |  |  | $ | 159,011 |  |  | $ | 2,856,512 |
2021 |  |  | $ | 3,433,602 |  |  | $ | 2,317,677 |  |  | $ | – |  |  | $ | 58,121 |  |  | $ | – |  |  | $ | 56,530 |  |  | $ | 5,865,930 |
2020 |  |  | $ | 1,860,816 |  |  | $ | 52,562 |  |  | $ | – |  |  | $ | 27,686 |  |  | $ | – |  |  | $ | 71,132 |  |  | $ | 2,012,196 |
Compensation Actually Paid vs. Total Shareholder Return [Text Block] |
| CAP VERSUS TOTAL SHAREHOLDER RETURN (TSR)
Compensation Actually Paid vs. Net Income [Text Block] |
| CAP VERSUS NET INCOME
Compensation Actually Paid vs. Company Selected Measure [Text Block] |
| CAP VERSUS REVENUE
Tabular List [Table Text Block] | FINANCIAL PERFORMANCE MEASURES As described in greater detail in the section captioned “EXECUTIVE COMPENSATION – Compensation Discussion and Analysis,” our executive compensation program is designed to motivate and reward exceptional performance in a straightforward and effective way, while also recognizing the size, scope, and success of our business. The compensation of our NEOs has three primary components: annual base salary, short-term incentives, and long-term incentives. Our compensation programs are designed to support our long-term strategy, with the majority of our executive team pay being at risk, and in the form of long-term incentives. Our executive compensation programs reward achievement of enterprise financial goals and strategic objectives that drive long-term stockholder value creation, thereby aligning the interests of our executives with our stockholders. Changes in stockholder value are incorporated in changes in the fair value of our equity awards and reflected in compensation actually paid amounts reported in columns (c) and (e) in the table above. For the fiscal year ended December 31, 2022, the most important financial performance measures used by Iron Mountain to link executive compensation actually paid to the NEOs to our performance are as follows:
PERFORMANCE MEASURES
Adjusted EBITDA
AFFO
Revenue
ROIC
Total Shareholder Return
Total Shareholder Return Amount | $ 189.43 | 189.58 | 100.98
Peer Group Total Shareholder Return Amount | 99.82 | 132.23 | 92.43
Net Income (Loss) | $ 562,150,000 | $ 452,730,000 | $ 343,100,000
Company Selected Measure Amount | 5,104,000,000 | 4,492,000,000 | 4,147,000,000
PEO Name | William L. Meaney | William L. Meaney | William L. Meaney
Measure [Axis]: 1 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | Revenue |  |
Non-GAAP Measure Description [Text Block] | The dollar amounts reported in column (i) represent the amount of revenue (in millions) as reported in our audited consolidated financial statements on Form 10-K for the applicable fiscal year. Revenue is our most important financial performance measure used to link compensation actually paid to our NEOs to company performance. |  |
Measure [Axis]: 2 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | Adjusted EBITDA |  |
Measure [Axis]: 3 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | AFFO |  |
Measure [Axis]: 4 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | ROIC |  |
Measure [Axis]: 5 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | Total Shareholder Return |  |
P E O Member Year End Fair Value Of Equity Awards [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | $ 15,180,077 | $ 30,532,123 | $ 9,042,239
P E O Member Year Over Year Change In Fair Value Of Equity Awards Granted In Prior Years That Vested In The Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (1,385,555) | 22,647,626 | 536,799
P E O Member Fair Value As Of Vesting Date Of Equity Awards Granted And Vested In The Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 0 | 0 | 0
P E O Member Year Over Year Change In Fair Value Of Outstanding And Unvested Equity Awards [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (4,530,733) | 1,052,694 | 355,676
P E O Member Fair Value At The End Of The Prior Year Of Equity Awards That Failed To Meet Vesting Conditions In The Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 0 | 0 | 0
P E O Member Value Of Dividends Or Other Earnings Paid On Stock Or Option Awards Not Otherwise Reflected In Fair Value Or Total Compensation [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 1,494,881 | 576,154 | 807,166
P E O Member Total Equity Award Adjustments [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 10,758,670 | 54,808,598 | 10,741,881
Non P E O N E O Member Year End Fair Value Of Equity Awards [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 2,983,946 | 3,433,602 | 1,860,816
Non P E O N E O Member Year Over Year Change In Fair Value Of Equity Awards Granted In Prior Years That Vested In The Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (101,015) | 2,317,677 | 52,562
Non P E O N E O Member Fair Value As Of Vesting Date Of Equity Awards Granted And Vested In The Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount |  |  |
Non P E O N E O Member Year Over Year Change In Fair Value Of Outstanding And Unvested Equity Awards [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (185,430) | 58,121 | 27,686
Non P E O N E O Member Fair Value At The End Of The Prior Year Of Equity Awards That Failed To Meet Vesting Conditions In The Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount |  |  |
Non P E O N E O Member Value Of Dividends Or Other Earnings Paid On Stock Or Option Awards Not Otherwise Reflected In Fair Value Or Total Compensation [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 159,011 | 56,530 | 71,132
Non P E O N E O Member Total Equity Award Adjustments [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | $ 2,856,512 | $ 5,865,930 | $ 2,012,196

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