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RETIREMENT PLANS AND POSTRETIREMENT BENEFITS - Schedule of Net Periodic (Benefit) Cost (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Retirement Benefits [Abstract]    
Interest cost $ 8.0 $ 5.6
Expected return on plan assets (10.3) (6.2)
Net periodic benefit $ (2.3) $ (0.6)