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PENSION PLANS - Plans with Accumulated Benefit Obligations in Excess of Plan Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Retirement Benefits [Abstract]    
Projected benefit obligation $ 65.8 $ 51.6
Accumulated benefit obligation 55.6 45.4
Fair value of plan assets $ 3.0 $ 0.0