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Lease Accounting - Schedule of Aggregate Lease Costs by Lease Classification (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Lease Cost [Line Items] |  |  |  |  |
Total operating lease costs |  | $ 85.3 | $ 89.1 | $ 252.1 | $ 255.3
Total finance lease costs |  | 5.2 | 4.8 | 15.8 | 14.2
Depreciation and Amortization |  |  |  |  |
Lease Cost [Line Items] |  |  |  |  |
Amortization of leased assets |  | 3.6 | 3.5 | 10.8 | 10.0
Interest Expense |  |  |  |  |
Lease Cost [Line Items] |  |  |  |  |
Interest on lease liabilities |  | 1.6 | 1.3 | 5.0 | 4.2
Equipment | Utilities and Other |  |  |  |  |
Lease Cost [Line Items] |  |  |  |  |
Total operating lease costs | [1] | 1.0 | 1.2 | 3.1 | 2.8
Real Estate | Facility Lease Expense |  |  |  |  |
Lease Cost [Line Items] |  |  |  |  |
Total operating lease costs | [1] | $ 84.3 | $ 87.9 | $ 249.0 | $ 252.5
[1] | Includes short-term lease payments, variable lease payments and office and equipment lease payments reflected in general and administrative expense as set forth in the following table for the periods presented:

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