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EMPLOYEE BENEFIT PLANS (Pre-tax Amounts Recognized in Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Qualified Plan      
Defined Benefit Plan Disclosure [Line Items]      
Prior service costs $ 0.0 $ 0.0 $ 0.0
Net actuarial loss (gain) 0.4 9.5 27.6
Amortization of losses and prior service cost (0.3) (0.1) (0.1)
Total changes in other comprehensive (income) loss 0.1 9.4 27.5
Post-Retirement Medical Plan      
Defined Benefit Plan Disclosure [Line Items]      
Prior service costs 0.0 6.1 0.0
Net actuarial loss (gain) (3.3) (0.2) (4.0)
Amortization of losses and prior service cost (0.5) (0.1) (0.4)
Total changes in other comprehensive (income) loss $ (3.8) $ 5.8 $ (4.4)