BENEFIT PLANS (Components of Net Periodic Benefit Cost - Pension Benefits) (Details) - Pension Plans, Defined Benefit [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Components of Net Periodic Benefit Cost
Service cost	$ 0.6	$ 1.0	$ 1.9	$ 3.0
Interest cost	8.5	5.3	25.4	15.8
Expected return on plan assets	(6.9)	(7.5)	(20.7)	(22.6)
Amortization of prior service cost	0.4	0.4	1.1	1.1
Amortization of actuarial loss	1.4	1.1	4.2	3.2
Net periodic benefit cost	4.0	0.3	11.9	0.5
Pretax reclassification from AOCI included in net periodic pension benefit cost	$ 1.8	$ 1.5	$ 5.3	$ 4.3