Schedule of Maturities of Lease Liabilities (Detail) $ in Millions	Sep. 30, 2019 USD ($)
OPERATING LEASES
Remainder of 2019	$ 4.0
2020	15.5
2021	9.7
2022	6.7
2023	2.8
Thereafter	3.8
Total lease payments	42.5
Less: interest	(1.7)
Total lease liabilities	40.8
FINANCE LEASES
Remainder of 2019	0.3
2020	0.8
2021	0.4
2022	0.1
2023	0.1
Total lease payments	1.7
Less: interest	(0.1)
Total lease liabilities	$ 1.6