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FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost basis of AFS			$ 6.7
Deferred compensation plan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost basis of investment funds	$ 84.8	$ 82.7	78.1
Fair Value Measurements on a Recurring Basis | Deferred compensation plan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan	99.2	98.6	90.7
Fair Value Measured at Net Asset Value Per Share | Fair Value Measurements on a Recurring Basis | Deferred compensation plan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan	$ 6.9	$ 7.0	$ 6.6

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