SEGMENT REPORTING - Reconciliation of Segment Profitability to Income from Operations (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting [Abstract]
Total Reportable Segment Adjusted Income from Operations	$ 90.5	$ 84.7
ERP and System Modernization	(4.4)	(2.7)
Intangible Amortization	(27.8)	(28.2)
Operational Optimization	(5.6)	0.0
Portfolio Optimization	(1.6)	(5.6)
Litigation, Settlements and Regulatory Compliance	(12.2)	(8.2)
Income from operations	$ 38.9	$ 40.0