XML 124 R104.htm IDEA: XBRL DOCUMENT v3.22.0.1
EMPLOYEE BENEFIT PLANS (Pre-tax Amounts Recognized in Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Qualified Plan      
Defined Benefit Plan Disclosure [Line Items]      
Prior service costs $ 0.0 $ 0.0 $ 0.0
Net actuarial (gain) loss (21.1) (5.9) (10.7)
Amortization of losses and prior service cost (0.1) (0.3) (0.3)
Total changes in other comprehensive (income) loss (21.2) (6.2) (11.0)
Post-Retirement Medical Plan      
Defined Benefit Plan Disclosure [Line Items]      
Prior service costs 0.0 1.8 0.0
Net actuarial (gain) loss (4.0) 1.9 (2.3)
Amortization of losses and prior service cost (0.7) (0.6) (0.5)
Total changes in other comprehensive (income) loss $ (4.7) $ 3.1 $ (2.8)