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Acquisitions and Divestitures - Intangible Allocation (Detail) - Stericycle [Member] - USD ($) $ in Millions | Nov. 04, 2024 | Sep. 30, 2025
--- | --- | ---
Intangible assets |  |
Other intangible assets | $ 3,482 | $ 3,482
Trade Names [Member] |  |
Intangible assets |  |
Other intangible assets | 610 |
Permits [Member] |  |
Intangible assets |  |
Other intangible assets | 319 |
Customer Relationships [Member] |  |
Intangible assets |  |
Other intangible assets | $ 2,296 |
Weighted average amortization periods | 15 years |
Trade Names [Member] |  |
Intangible assets |  |
Other intangible assets | $ 114 |
Weighted average amortization periods | 2 years 10 months 24 days |
ERP software [Member] |  |
Intangible assets |  |
Other intangible assets | $ 138 |
Weighted average amortization periods | 4 years 8 months 12 days |
Developed technology [Member] |  |
Intangible assets |  |
Other intangible assets | $ 5 |
Weighted average amortization periods | 17 years |

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