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SEGMENT REPORTING - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Segment Reporting Information [Line Items] |  |  |
Property, plant and equipment, net | $ 2,447,941 | $ 2,193,318 |
Goodwill | 1,477,199 | 1,287,736 | $ 1,246,878
Permits and other intangibles, net | 701,987 | 602,797 |
Total | 2,179,186 | 1,890,533 |
Environmental Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Goodwill | 1,296,204 | 1,112,013 | 1,071,846
Safety-Kleen Sustainability Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Goodwill | 180,995 | 175,723 | $ 175,032
Operating segments | Environmental Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Property, plant and equipment, net | 1,865,611 | 1,651,026 |
Goodwill | 1,296,204 | 1,112,013 |
Permits and other intangibles, net | 549,482 | 454,919 |
Total | 1,845,686 | 1,566,932 |
Operating segments | Safety-Kleen Sustainability Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Property, plant and equipment, net | 463,538 | 411,415 |
Goodwill | 180,995 | 175,723 |
Permits and other intangibles, net | 152,505 | 147,878 |
Total | 333,500 | 323,601 |
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Property, plant and equipment, net | $ 118,792 | $ 130,877 |

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