Schedule of Cash Flow Information Related to Leases (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 27.0	$ 17.0	$ 15.9
Financing cash flows from finance leases	0.6	1.1	1.0
Right-of-use assets obtained in exchange for lease liabilities
Operating leases	$ 27.1	39.5	17.0
Finance leases		$ 1.3	$ 2.9