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Leases - Other 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 $ 35.1 $ 33.3 $ 30.3
Right-of-use assets obtained in exchange for operating lease obligations $ 21.6 $ 33.9 $ 34.3
Weighted average remaining lease term - operating leases 5 years 7 months 6 days 6 years 1 month 6 days 6 years 10 months 24 days
Weighted average discount rate - operating leases 3.60% 3.50% 3.90%