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RETIREMENT PLANS AND POSTRETIREMENT BENEFITS - Schedule of Net Periodic (Benefit) Cost (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2024
Retirement Benefits [Abstract]    
Interest cost $ 7.8 $ 21.5
Expected return on plan assets (8.5) (23.4)
Net periodic benefit $ (0.7) $ (1.9)