SEGMENT REPORTING - Reconciliation of Company's Primary Measure of Segment Profitability Adjusted Income from Operations to Income from Operations (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting [Abstract]
Total Reportable Segment Adjusted Income from Operations	$ 84.7	$ 59.0
ERP and System Modernization	(2.7)	(5.6)
Intangible Amortization	(28.2)	(32.4)
Portfolio Optimization	(5.6)	(1.3)
Litigation, Settlements and Regulatory Compliance	(8.2)	(13.8)
Income from operations	$ 40.0	$ 5.9