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Pay vs Performance Disclosure - USD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pay vs Performance Disclosure |  |  |  |
Pay vs Performance Disclosure, Table |
|  | PEO McKim(1) |  | Co-PEO Battles(1) |  | Co-PEO Gerstenberg(1) |  | Average SCT Total for Non-PEO NEOs(3)(4) ($) |  | Average CAP to Non-PEO NEOs(3)(9) ($) |  | Value of Initial Fixed $100 Investment Based On: |  |  |  |
Year |  | SCT Total(2) ($) |  | CAP(9) ($) |  | SCT Total(2) ($) |  | CAP(9) ($) |  | SCT Total(2) ($) |  | CAP(9) ($) |  |  |  | TSR(5) ($) |  | Peer Group TSR(6) ($) |  | Net Income ('000)(7) ($) |  | Adjusted EBITDA ('000)(8) ($)
2023 |  | 2,296,564 |  |  | 3,620,475 |  |  | 4,917,312 |  |  | 9,168,758 |  |  | 4,938,543 |  |  | 10,246,152 |  |  | 1,344,687 |  |  | 3,379,706 |  |  | 203.46 |  |  | 172.43 |  |  | 377,856 |  |  | 1,012,570 |
2022 |  | 6,241,356 |  |  | 6,773,049 |  |  | — |  | — |  | — |  | — |  | 2,755,014 |  |  | 3,349,545 |  |  | 133.07 |  |  | 138.62 |  |  | 411,744 |  |  | 1,022,128 |
2021 |  | 5,612,724 |  |  | 6,601,096 |  |  | — |  | — |  | — |  | — |  | 2,931,679 |  |  | 3,736,275 |  |  | 116.35 |  |  | 153.53 |  |  | 203,247 |  |  | 676,606 |
2020 |  | 3,828,532 |  |  | 3,661,166 |  |  | — |  | — |  | — |  | — |  | 2,343,696 |  |  | 2,262,282 |  |  | 88.75 |  |  | 116.53 |  |  | 134,837 |  |  | 573,804 |
Company Selected Measure Name | AdjustedEBITDA ('000)(8)($) |  |  |
Named Executive Officers, Footnote | (1) During the period from January 1, 2023 through March 31, 2023 and for all of 2022, 2021 and 2020, the Company had one PEO, namely Alan S. McKim. Effective March 31, 2023, Michael L. Battles (who had previously served as the Company's Chief Financial Officer) and Eric. W. Gerstenberg (who had previously served as the Company's Chief Operating Officer) were appointed as the Company's Co-Chief Executive Officers, and served concurrently in that capacity for the remainder of 2023. (2) The dollar amounts reported in this column are the amounts of total compensation reported for Mr. McKim, Mr. Battles or Mr. Gerstenberg in the “Total” column of the Summary Compensation Table for years in which they held the role of PEO. (3) For 2023, the Non-PEO NEOs whose average compensation is reported in this column include Eric J. Dugas, Brian P. Weber, Robert E. Speights and Sharon M. Gabriel. For each of 2022 and 2021 the Non-PEO NEOs whose average compensation is reported in this column include Michael L. Battles, Eric W. Gerstenberg, Brian P. Weber and Robert E. Speights. For 2020, the Non-PEO NEOs whose average compensation is reported in this column include Michael L. Battles, Eric W. Gerstenberg, Brian P. Weber and Sharon M. Gabriel. |  |  |
Peer Group Issuers, Footnote | Represents the weighted peer group TSR based on a fixed investment of $100 on January 2, 2020. For each of the four fiscal years presented in the table above, the peer group was comprised of ABM Industries Incorporated, Advanced Drainage Systems, Inc., Chemed Corporation, Emcor Group, Inc., Enviri Corporation, GFL Environmental, Inc., Healthcare Services Group, Inc., Huntsman Corporation, Iron Mountain Incorporated, KBR, Inc, Quanta Services, Inc., Republic Services, Inc., Rollins, Inc., Stanley Black & Decker, Inc., Stericycle, Inc., Tetra Tech, Inc., Waste Connections, Inc., and Waste Management, Inc. Heritage-Crystal Clean, Inc. was previously included in the Peer Group but is no longer listed since being acquired by a private company in 2023, the Peer Group TSR values have been recast to reflect the current peer group for each of 2022, 2021 and 2020. The TSR of the peer group that included Heritage Crystal Clean for 2022, 2021 and 2020 is $140.46, $155.52 and $118.41, respectively. |  |  |
Adjustment To PEO Compensation, Footnote | 9) CAP is calculated in accordance with the Item 402(v) of Regulation S-K. Reconciliations of Summary Compensation Table data to CAP for fiscal 2023, 2022, 2021, and 2020 for the PEOs and the Non-PEO NEOs are included in the table below:
|  | PEO (Alan S. McKim)
Year |  | 2023 |  | 2022 |  | 2021 |  | 2020
Summary Compensation Table Total Compensation |  | $ | 2,296,564 |  |  | $ | 6,241,356 |  |  | $ | 5,612,724 |  |  | $ | 3,828,532 |
Less: Grant Date Fair Value of Stock Awards (from Summary Compensation Table) |  | — |  |  | 1,199,998 |  |  | 1,293,846 |  |  | 1,406,079 |
Add: |  |  |  |  |  |  |  |
Change in Fair Value of Awards Granted During Year and Outstanding and Unvested as of Year-End |  | — |  |  | 1,492,575 |  |  | 1,384,608 |  |  | 1,835,380 |
Change in Fair Value of Prior Year Awards Unvested as of Year-End |  | 1,134,728 |  |  | 159,314 |  |  | 150,020 |  |  | (218,891) |
Change in Fair Value of Prior Year Awards that Vested During Year |  | 189,183 |  |  | 79,802 |  |  | 747,590 |  |  | (377,776) |
Total Additions to Compensation Actually Paid |  | 1,323,911 |  |  | 1,731,691 |  |  | 2,282,218 |  |  | 1,238,713 |
Compensation Actually Paid |  | $ | 3,620,475 |  |  | $ | 6,773,049 |  |  | $ | 6,601,096 |  |  | $ | 3,661,166 |
|  | Co-PEO (Michael L. Battles)
Year |  | 2023 |  | 2022 |  | 2021 |  | 2020
Summary Compensation Table Total Compensation |  | $ | 4,917,312 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Less: Grant Date Fair Value of Stock Awards (from Summary Compensation Table) |  | 2,931,746 |  |  | — |  |  | — |  |  | — |
Add: |  |  |  |  |  |  |  |
Change in Fair Value of Awards Granted During Year and Outstanding and Unvested as of Year-End |  | 5,086,269 |  |  | — |  |  | — |  |  | — |
Change in Fair Value of Prior Year Awards Unvested as of Year-End |  | 1,250,254 |  |  | — |  |  | — |  |  | — |
Change in Fair Value of Prior Year Awards that Vested During Year |  | 846,669 |  |  | — |  |  | — |  |  | — |
Total Additions to Compensation Actually Paid |  | 7,183,192 |  |  | — |  |  | — |  |  | — |
Compensation Actually Paid |  | $ | 9,168,758 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
|  | Co-PEO (Eric W. Gerstenberg)
Year |  | 2023 |  | 2022 |  | 2021 |  | 2020
Summary Compensation Table Total Compensation |  | $ | 4,938,543 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Less: Grant Date Fair Value of Stock Awards (from Summary Compensation Table) |  | 2,931,746 |  |  | — |  |  | — |  |  | — |
Add: |  |  |  |  |  |  |  |
Change in Fair Value of Awards Granted During Year and Outstanding and Unvested as of Year-End |  | 5,086,268 |  |  | — |  |  | — |  |  | — |
Change in Fair Value of Prior Year Awards Unvested as of Year-End |  | 1,792,496 |  |  | — |  |  | — |  |  | — |
Change in Fair Value of Prior Year Awards that Vested During Year |  | 1,360,591 |  |  | — |  |  | — |  |  | — |
Total Additions to Compensation Actually Paid |  | 8,239,355 |  |  | — |  |  | — |  |  | — |
Compensation Actually Paid |  | $ | 10,246,152 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Non-PEO NEO Average Total Compensation Amount | $ 1,344,687 | $ 2,755,014 | $ 2,931,679 | $ 2,343,696
Non-PEO NEO Average Compensation Actually Paid Amount | $ 3,379,706 | 3,349,545 | 3,736,275 | 2,262,282
Adjustment to Non-PEO NEO Compensation Footnote | 9) CAP is calculated in accordance with the Item 402(v) of Regulation S-K. Reconciliations of Summary Compensation Table data to CAP for fiscal 2023, 2022, 2021, and 2020 for the PEOs and the Non-PEO NEOs are included in the table below:
|  | Average of Non-PEO NEOs
Year |  | 2023 |  | 2022 |  | 2021 |  | 2020
Summary Compensation Table Total Compensation |  | $ | 1,344,687 |  |  | $ | 2,755,014 |  |  | $ | 2,931,679 |  |  | $ | 2,343,696 |
Less: Grant Date Fair Value of Stock Awards (from Summary Compensation Table) |  | 342,733 |  |  | 1,371,984 |  |  | 1,604,777 |  |  | 1,308,804 |
Add: |  |  |  |  |  |  |  |
Change in Fair Value of Awards Granted During Year and Outstanding and Unvested as of Year-End |  | 1,281,296 |  |  | 1,706,493 |  |  | 1,643,335 |  |  | 1,909,616 |
Change in Fair Value of Prior Year Awards Unvested as of Year-End |  | 844,916 |  |  | 325,300 |  |  | 543,138 |  |  | (179,536) |
Change in Fair Value of Prior Year Awards that Vested During Year |  | 251,540 |  |  | (65,278) |  |  | 318,653 |  |  | (346,796) |
Change in Fair Value of Prior Year Awards that Forfeited During Year |  | — |  |  | — |  |  | (95,753) |  |  | (155,894) |
Total Additions to Compensation Actually Paid |  | 2,377,752 |  |  | 1,966,515 |  |  | 2,409,373 |  |  | 1,227,390 |
Compensation Actually Paid |  | $ | 3,379,706 |  |  | $ | 3,349,545 |  |  | $ | 3,736,275 |  |  | $ | 2,262,282 |
Compensation Actually Paid vs. Total Shareholder Return | The following chart sets forth the relationship between Compensation Actually Paid to the PEO (which, for 2023 is the average of the Compensation Actual Paid for 2023 to the Mr. McKim and the two Co-PEOs), and, on average, to the other NEOs, and the Company’s TSR and that of our peer group over the four most recently completed fiscal years. PEO and Average Other NEO Compensation Actually Paid Versus Clean Harbors TSR |  |  |
Compensation Actually Paid vs. Net Income | The following chart sets forth the relationship between Compensation Actually Paid to the PEO (which, for 2023 is the average of the total annual compensation paid for 2023 to Mr. McKim and the two Co-PEOs), and on average to the other NEOs, and the Company's net income during the four most recently completed fiscal years. PEO and Average Other NEO Compensation Actually Paid Versus Clean Harbors Net Income |  |  |
Compensation Actually Paid vs. Company Selected Measure | on average, the other NEOs and the Company's Adjusted EBITDA during the four most recently completed fiscal years. PEO and Average Other NEO Compensation Actually Paid Versus Clean Harbors Adjusted EBITDA |  |  |
Tabular List, Table |
Performance Metrics
Adjusted EBITDA
Adjusted EBITDA Margin
Adjusted Free Cash Flow
Adjusted Return on Invested Capital
Revenue
TRIR
Total Shareholder Return Amount | $ 203.46 | 133.07 | 116.35 | 88.75
Peer Group Total Shareholder Return Amount | 172.43 | 138.62 | 153.53 | 116.53
Net Income (Loss) | $ 377,856,000 | $ 411,744,000 | $ 203,247,000 | $ 134,837,000
Company Selected Measure Amount | 1,012,570,000 | 1,022,128,000 | 676,606,000 | 573,804,000
Measure:: 1 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Adjusted EBITDA |  |  |
Measure:: 2 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Adjusted EBITDA Margin |  |  |
Measure:: 3 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Adjusted Free Cash Flow |  |  |
Measure:: 4 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Adjusted Return on Invested Capital |  |  |
Measure:: 5 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Revenue |  |  |
Measure:: 6 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | TRIR |  |  |
Alan S. McKim [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
PEO Total Compensation Amount | $ 2,296,564 | $ 6,241,356 | $ 5,612,724 | $ 3,828,532
PEO Actually Paid Compensation Amount | 3,620,475 | 6,773,049 | 6,601,096 | 3,661,166
Michael L. Battles [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
PEO Total Compensation Amount | 4,917,312 |  |  |
PEO Actually Paid Compensation Amount | 9,168,758 |  |  |
Eric W. Gerstenberg [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
PEO Total Compensation Amount | 4,938,543 |  |  |
PEO Actually Paid Compensation Amount | 10,246,152 |  |  |
PEO | Alan S. McKim [Member] | Fair Value of Awards Granted During Year and Unvested as of Year-End [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 0 | 1,492,575 | 1,384,608 | 1,835,380
PEO | Alan S. McKim [Member] | Change in Fair Value of Prior Year Awards Unvested as of Year-End [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 1,134,728 | 159,314 | 150,020 | (218,891)
PEO | Alan S. McKim [Member] | Change in Fair Value of Prior Year Awards that Vested During Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 189,183 | 79,802 | 747,590 | (377,776)
PEO | Alan S. McKim [Member] | Total Additions to Compensation Actually Paid [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 1,323,911 | 1,731,691 | 2,282,218 | 1,238,713
PEO | Michael L. Battles [Member] | Fair Value of Awards Granted During Year and Unvested as of Year-End [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 5,086,269 |  |  |
PEO | Michael L. Battles [Member] | Change in Fair Value of Prior Year Awards Unvested as of Year-End [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 1,250,254 |  |  |
PEO | Michael L. Battles [Member] | Change in Fair Value of Prior Year Awards that Vested During Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 846,669 |  |  |
PEO | Michael L. Battles [Member] | Total Additions to Compensation Actually Paid [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 7,183,192 |  |  |
PEO | Michael L. Battles [Member] | Grant Date Fair Value of Stock Awards in Fiscal Year (from Summary Compensation Table) [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 2,931,746 |  |  |
PEO | Eric W. Gerstenberg [Member] | Fair Value of Awards Granted During Year and Unvested as of Year-End [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 5,086,268 |  |  |
PEO | Eric W. Gerstenberg [Member] | Change in Fair Value of Prior Year Awards Unvested as of Year-End [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 1,792,496 |  |  |
PEO | Eric W. Gerstenberg [Member] | Change in Fair Value of Prior Year Awards that Vested During Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 1,360,591 |  |  |
PEO | Eric W. Gerstenberg [Member] | Total Additions to Compensation Actually Paid [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 8,239,355 |  |  |
PEO | Eric W. Gerstenberg [Member] | Grant Date Fair Value of Stock Awards in Fiscal Year (from Summary Compensation Table) [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 2,931,746 |  |  |
Non-PEO NEO | Fair Value of Awards Granted During Year and Unvested as of Year-End [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 1,281,296 | 1,706,493 | 1,643,335 | 1,909,616
Non-PEO NEO | Change in Fair Value of Prior Year Awards Unvested as of Year-End [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 844,916 | 325,300 | 543,138 | (179,536)
Non-PEO NEO | Change in Fair Value of Prior Year Awards that Vested During Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 251,540 | (65,278) | 318,653 | (346,796)
Non-PEO NEO | Total Additions to Compensation Actually Paid [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 2,377,752 | 1,966,515 | 2,409,373 | 1,227,390
Non-PEO NEO | Grant Date Fair Value of Stock Awards in Fiscal Year (from Summary Compensation Table) [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 342,733 | 1,371,984 | 1,604,777 | 1,308,804
Non-PEO NEO | Change in Fair Value of Prior Year Awards that Forfeited During Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | $ 0 | $ 0 | $ (95,753) | $ (155,894)

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