LEASES - Schedule of Supplemental Cash flow Information Related to Leases (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 117.1	$ 122.4
Operating cash flows from finance leases (interest)	1.9	0.9
Financing cash flows from finance leases (principle)	4.3	4.3	$ 8.2
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	79.8	203.8
Finance leases	$ 1.1	$ 17.0