BENEFIT PLANS - Schedule of Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2023	Aug. 12, 2023	Dec. 31, 2022	Dec. 31, 2021
Other Benefits
Components of net periodic benefit cost
Interest cost	$ 0.1	$ 0.2	$ 0.2	$ 0.7
Service cost	0.0	0.0	0.0	0.1
Recognized net actuarial (gain) loss	0.0	(0.3)	(0.4)	0.2
Net periodic benefit cost	0.1	(0.1)	(0.2)	1.0
U.S. Plans | Pension Benefits
Components of net periodic benefit cost
Interest cost	7.6	11.9	17.3	15.9
Expected return on plan assets	(6.0)	(11.0)	(21.2)	(22.3)
Recognized net actuarial (gain) loss	0.0	0.4	4.4	8.9
Settlement (gain) loss	0.0	0.0	14.3	0.0
Net periodic benefit cost	1.6	1.3	14.8	2.5
Non-U.S. Plans | Pension Benefits
Components of net periodic benefit cost
Interest cost	4.3	7.2	4.1	2.9
Service cost	2.7	3.9	8.9	9.8
Expected return on plan assets	(5.2)	(8.4)	(14.5)	(14.5)
Amortization of prior service cost	0.0	(0.5)	(0.4)	(0.1)
Recognized net actuarial (gain) loss	0.0	(2.2)	(1.6)	0.3
Curtailment loss	0.0	(0.1)	0.0	0.0
Settlement (gain) loss	0.1	(2.1)	(4.1)	(1.1)
Net periodic benefit cost	$ 1.9	$ (2.2)	$ (7.6)	$ (2.7)