LEASE ACCOUNTING - Schedule of Aggregate Lease Costs by Lease Classification (Parenthetical) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Lease Cost [Line Items]
Office leases		$ 270.5	$ 280.8	$ 279.8
Equipment | Utilities and Other
Lease Cost [Line Items]
Short term lease payments		3.4	3.6	3.9
Real Estate | Facility Lease Expense
Lease Cost [Line Items]
Variable lease payments	[1]	64.4	68.3	36.4
Office leases		$ 1.4	$ 1.4	$ 1.3

[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.