EMPLOYEE BENEFIT PLANS (Net Periodic Benefit Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net Periodic Benefit Cost
Attempted plan funded status, minimum, percentage	80.00%
Pension Benefits
Net Periodic Benefit Cost
Service cost	$ 0.7	$ 0.7	$ 0.7
Interest cost	3.3	2.7	4.3
Expected return on assets	(6.1)	(5.5)	(6.8)
Transition obligation	0.0	0.0	0.0
Settlement cost	0.0	0.0	0.0
Prior service cost	0.0	0.0	0.0
Actuarial loss	5.6	4.3	3.7
Settlement cost	0.0	0.0	0.0
Net periodic benefit cost	3.5	2.2	1.9
Other Benefits
Net Periodic Benefit Cost
Service cost	0.0	0.0	0.0
Interest cost	0.1	0.1	0.2
Expected return on assets	0.0	0.0	0.0
Transition obligation	0.0	0.0	0.0
Settlement cost	0.0	0.0	0.0
Prior service cost	0.0	0.0	0.0
Actuarial loss	0.1	0.2	0.1
Settlement cost	0.0	0.0	0.0
Net periodic benefit cost	$ 0.2	$ 0.3	$ 0.3