Lease Accounting - Schedule of Minimum Cash Lease Payments (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash paid for amounts included in the measurement of lease liabilities
Cash outflows for operating leases	$ 140.3	$ 139.1
Cash outflows for finance leases - operating activities	2.5	2.7
Cash outflows for finance leases - financing activities	7.1	7.2
Non-cash amount of right-of-use assets obtained in exchange for:
Operating lease liability additions, net of write-offs	$ 46.3	$ 57.0