Leases - Schedule of Information on Leases (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Lease cost	$ 64.7	$ 59.7	$ 62.4
Cash paid for leases recognized in operating cash flows	57.9	62.8	65.2
Right-of-use assets obtained in exchange for new lease liabilities	86.2	77.8	$ 72.0
Right-of-use assets recognized in Other assets	$ 213.5	$ 203.8
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets	Other assets
Lease liabilities recognized in Other current liabilities	$ 53.2	$ 52.9
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities
Lease liabilities recognized in Other long-term liabilities	$ 190.2	$ 174.4
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other long-term liabilities	Other long-term liabilities
Weighted-average remaining lease term	6 years 7 months 6 days	5 years 9 months 18 days
Weighted-average discount rate	3.50%	2.80%