LEASES - Components of Net Lease Cost (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 114.2	$ 117.2
Finance lease cost:
Amortization of leased assets	4.7	3.5
Interest on lease liabilities	1.9	1.0
Net lease cost	$ 120.8	$ 121.7