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Acquisitions - Allocation (Detail) - USD ($) $ in Millions | Sep. 30, 2024 | Jun. 03, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Purchase price allocation |  |  |
Goodwill | $ 9,822 |  | $ 9,254
2024 Business Acquisitions [Member] |  |  |
Purchase price allocation |  |  |
Property and equipment | 160 |  |
Other intangible assets | 78 |  |
Goodwill | $ 581 |  |
Stericycle [Member] |  |  |
Purchase price allocation |  |  |
Long-term debt, less current portion |  | $ (1,400) |

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