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OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Operations And Significant Accounting Policies [Line Items] |  |
Prepayments and other | $ 75,300,000 | $ 99,700,000
Goodwill | 154,900,000 | 154,900,000
Goodwill change | 0 |
New Energy |  |
Operations And Significant Accounting Policies [Line Items] |  |
Prepayments and other | $ 22,500,000 | $ 32,400,000

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