Other assets impairments, restructuring and other items - Schedule of Other Assets Impairments, Restructuring and Other Items (Detail) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Restructuring And Impairment [Abstract] | |||||||
| Impairments of long-lived tangible assets | $ 204 | $ 15 | $ 296 | $ 28 | |||
| Contingent consideration | 2 | 16 | 25 | 46 | |||
| Restructuring | 58 | 29 | 121 | 196 | |||
| Other | [1] | 3 | (4) | 2 | |||
| Total | $ 264 | $ 62 | $ 438 | $ 272 | |||
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| X | ||||||||||
- Definition Impairment and restructuring. No definition available.
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| X | ||||||||||
- Definition Legal settlements loss contingencies impairments other expenses. No definition available.
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| X | ||||||||||
- Definition Restructuring and impairment. No definition available.
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| X | ||||||||||
- Definition Amount of increase (decrease) in value of liability in contingent consideration arrangement in business combination, including, but not limited to, difference arising upon settlement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of impairment loss for long-lived asset held and used. Includes, but is not limited to, impairment loss for long-lived asset to be disposed of other than by sale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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