SEGMENT REPORTING - Reconciliation of Company's Primary Measure of Segment Profitability (EBITDA) to Loss from Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting [Abstract]
Total Reportable Segment Adjusted Income from Operations	$ 315.5	$ 323.7	$ 352.4
ERP and System Modernization	(19.2)	(19.2)	(59.0)
Intangible amortization	(112.0)	(124.0)	(117.9)
Operational Optimization	(4.1)	0.0	0.0
Portfolio Optimization	(65.6)	8.7	(3.3)
Litigation, Settlements and Regulatory Compliance	(30.8)	(30.0)	(93.2)
Asset Impairments	(6.5)	(5.5)	(6.7)
Income from operations	$ 77.3	$ 153.7	$ 72.3