RESTRUCTURING - Schedule of Restructuring Accrual Balances and Related Activity (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
Restructuring Reserve [Roll Forward]
Balance at beginning of period	$ 14.4	$ 44.2	$ 35.3	$ 62.9
Liabilities incurred	5.3	6.8	62.5	15.4
Liabilities paid/settled	(9.4)	(37.0)	(53.6)	(43.0)
Other		0.4
Balance at end of period	$ 10.3	$ 14.4	$ 44.2	$ 35.3