Lease Accounting - Schedule of Aggregate Lease Costs by Lease Classification (Parenthetical) (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Lease Cost [Line Items]
Lease payments				$ 203.7	$ 210.7
Equipment | Utilities and Other
Lease Cost [Line Items]
Short term lease payments		$ 1.1	$ 0.5	2.5	3.0
Real Estate | Facility Lease Expense
Lease Cost [Line Items]
Variable lease payments	[1]	20.4	18.2	49.1	51.0
Lease payments		$ 0.5	$ 0.4	$ 1.1	$ 1.0

[1] (1) Represents lease payments that are based on a change in index, such as CPI or inflation, variable payments based on revenue or attendance and variable common area maintenance costs.