Leases - Summary of Components of Lease Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Finance lease cost:
Net lease cost	$ 116.9	$ 122.0	$ 130.5
Other Operating Income (Expense)
Lessee Lease Description [Line Items]
Operating lease cost	85.6	89.0	93.1
Finance lease cost:
Variable lease cost	29.7	31.8	34.2
Short-term lease cost	1.4	2.1	2.6
Depreciation And Amortization
Finance lease cost:
Amortization of lease assets	2.7	1.7	1.7
Interest
Finance lease cost:
Interest of lease liabilities	0.2	0.1	0.1
Information And Other
Finance lease cost:
Sublease income	$ (2.7)	$ (2.7)	$ (1.2)