LEASE ACCOUNTING - Schedule of Aggregate Lease Costs by Lease Classification (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating lease costs
Total operating lease costs		$ 338.3	$ 352.7	$ 320.1
Finance lease costs
Depreciation of leased assets		58.4	73.9
Total finance lease costs		19.3	16.9	17.7
Depreciation and Amortization
Finance lease costs
Depreciation of leased assets		13.5	12.0	12.4
Interest Expense
Finance lease costs
Interest on lease liabilities		5.8	4.9	5.3
Equipment | Utilities and Other
Operating lease costs
Total operating lease costs	[1]	3.8	4.1	4.4
Real Estate | Facility Lease Expense
Operating lease costs
Total operating lease costs	[1]	$ 334.5	$ 348.6	$ 315.7

[1] Includes short-term lease payments, variable lease payments and office lease payments reflected in general and administrative expense as set forth in the following table for the periods presented:     Year Ended December 31,   Lease Cost Classification 2022   2023   2024   Operating lease costs               Equipment - Short-term and variable lease payments Utilities and other $ 3.9   $ 3.6   $ 3.4   Real Estate - Variable lease payments (1) Facility lease expense $ 36.4   $ 68.3   $ 64.4   Office and equipment leases General and administrative $ 1.3   $ 1.4   $ 1.4