EMPLOYEE BENEFIT PLANS - Schedule of Projected and Accumulated Benefit Obligations in Excess of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 116.6	$ 149.5
Fair value of plan assets	26.5	46.7
Accumulated benefit obligation	108.3	122.8
Fair value of plan assets	25.4	28.2
Health Care Benefits
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	15.8	18.3
Fair value of plan assets	0.0	0.0
Accumulated benefit obligation	15.8	18.3
Fair value of plan assets	$ 0.0	$ 0.0