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, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting [Abstract]
Total Reportable Segment Adjusted Income from Operations	$ 323.7	$ 352.4	$ 388.6
Intangible amortization	(124.0)	(117.9)	(124.9)
ERP and system modernization	(19.2)	(59.0)	(50.8)
Operational Optimization	0.0	0.0	(3.1)
Portfolio Optimization	8.7	(3.3)	(133.0)
Litigation, Settlements and Regulatory Compliance	(30.0)	(93.2)	(20.3)
Asset Impairments	(5.5)	(6.7)	(15.5)
Other	0.0	0.0	(9.1)
Income from operations	$ 153.7	$ 72.3	$ 31.9