Lease Accounting - Schedule of Minimum Cash Lease Payments (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash paid for amounts included in the measurement of lease liabilities
Cash outflows for operating leases	$ 203.7	$ 210.7
Cash outflows for finance leases - operating activities	4.2	3.7
Cash outflows for finance leases - financing activities	11.4	10.7
Non-cash amount of right-of-use assets obtained in exchange for:
Operating lease liability additions, net	135.6	73.3
Finance lease liability additions, net	$ 34.2	$ 0.0