Lease Commitments - Lease Cost Components (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating Lease Cost	$ 93.5	$ 109.2
Variable Lease, Cost	49.3	54.7
Sublease Income	(3.0)	(2.7)
Total Lease Cost	$ 139.8	$ 161.2