LEASES - Components of Net Lease Cost (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Leases [Abstract]
Operating lease cost	$ 28.7	$ 57.9
Finance lease cost
Amortization of leased assets	0.5	1.6
Interest on lease liabilities	0.2	0.4
Net lease cost	$ 29.4	$ 59.9