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REVENUES (Tables) | 3 Months Ended
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Mar. 31, 2024
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregation of Revenue | The following tables present the Company's third-party revenue disaggregated by source of revenue and geography (in thousands):
|  | Three Months Ended March 31, 2024
|  | Environmental Services |  | Safety-Kleen Sustainability Solutions |  | Corporate |  | Total
Primary Geographical Markets |  |  |  |  |  |  |  |
United States |  | $ | 1,053,458 |  |  | $ | 193,912 |  |  | $ | 102 |  |  | $ | 1,247,472 |
Canada |  | 107,821 |  |  | 21,402 |  |  | — |  |  | 129,223 |
Total third-party revenues |  | $ | 1,161,279 |  |  | $ | 215,314 |  |  | $ | 102 |  |  | $ | 1,376,695 |
Sources of Revenue |  |  |  |  |  |  |  |
Technical Services |  | $ | 407,491 |  |  | $ | — |  |  | $ | — |  |  | $ | 407,491 |
Industrial Services and Other |  | 359,397 |  |  | — |  |  | 102 |  |  | 359,499 |
Field and Emergency Response Services |  | 163,469 |  |  | — |  |  | — |  |  | 163,469 |
Safety-Kleen Environmental Services |  | 230,922 |  |  | 53,021 |  |  | — |  |  | 283,943 |
Safety-Kleen Oil |  | — |  |  | 162,293 |  |  | — |  |  | 162,293 |
Total third-party revenues |  | $ | 1,161,279 |  |  | $ | 215,314 |  |  | $ | 102 |  |  | $ | 1,376,695 |
|  | Three Months Ended March 31, 2023
|  | Environmental Services |  | Safety-Kleen Sustainability Solutions |  | Corporate |  | Total
Primary Geographical Markets |  |  |  |  |  |  |  |
United States |  | $ | 958,584 |  |  | $ | 221,771 |  |  | $ | 107 |  |  | $ | 1,180,462 |
Canada |  | 102,398 |  |  | 24,527 |  |  | — |  |  | 126,925 |
Total third-party revenues |  | $ | 1,060,982 |  |  | $ | 246,298 |  |  | $ | 107 |  |  | $ | 1,307,387 |
Sources of Revenue |  |  |  |  |  |  |  |
Technical Services |  | $ | 366,509 |  |  | $ | — |  |  | $ | — |  |  | $ | 366,509 |
Industrial Services and Other |  | 336,379 |  |  | — |  |  | 107 |  |  | 336,486 |
Field and Emergency Response Services |  | 148,086 |  |  | — |  |  | — |  |  | 148,086 |
Safety-Kleen Environmental Services |  | 210,008 |  |  | 49,559 |  |  | — |  |  | 259,567 |
Safety-Kleen Oil |  | — |  |  | 196,739 |  |  | — |  |  | 196,739 |
Total third-party revenues |  | $ | 1,060,982 |  |  | $ | 246,298 |  |  | $ | 107 |  |  | $ | 1,307,387 |
Schedule of Contract Balances |
(in thousands) |  | March 31, 2024 |  | December 31, 2023
Receivables |  | $ | 1,039,763 |  |  | $ | 983,111 |
Contract assets (unbilled receivables) |  | 165,592 |  |  | 107,859 |
Contract liabilities (deferred revenue) |  | 106,425 |  |  | 95,230 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-10 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-5 + Details
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