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FAIR VALUE MEASUREMENTS - Narrative (Details) - Deferred compensation plan - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cost basis of investment funds | $ 77.4 | $ 82.7 | $ 78.6
Fair Value Measurements on a Recurring Basis |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Deferred compensation plan | 98.3 | 98.6 | 94.0
Fair Value Measured at Net Asset Value Per Share | Fair Value Measurements on a Recurring Basis |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Deferred compensation plan | $ 7.3 | $ 7.0 | $ 6.8

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