RETIREMENT PLANS - Schedule of Net Periodic Defined Benefit Pension Cost (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]
Service Cost	$ 0.6	$ 0.6	$ 1.6	$ 1.5
Interest Cost	5.3	5.8	16.1	17.1
Expected Return on Plan Assets	(5.0)	(6.8)	(15.0)	(20.2)
Amortization of Prior Service Cost and Net Actuarial Loss (Gain)	0.2	(0.5)	0.5	(1.6)
Special Termination Benefits	0.0	0.0	0.2	0.0
Net Periodic Benefit Expense (Income)	$ 1.1	$ (0.9)	$ 3.4	$ (3.2)