Schedule of Cash Flow Information Related to Leases (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 15.9	$ 16.7	$ 17.2
Operating cash flows from finance leases	0.0	0.0	0.1
Financing cash flows from finance leases	1.0	0.6	0.9
Right-of-use assets obtained in exchange for lease liabilities
Operating leases	17.0	8.1	19.9
Finance leases	$ 2.9	$ 0.4	$ 0.5