Leases - Schedule of Supplemental Consolidated Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Operating leases:
Operating lease right-of-use assets	$ 86.3	$ 91.2
Current operating lease liabilities	20.5	21.3
Operating lease liabilities	66.3	70.3
Total operating lease liabilities	$ 86.8	$ 91.6
Weighted average remaining lease term, in years	5 years 7 months 6 days	5 years 9 months 18 days
Weighted average discount rate	7.20%	7.40%