Post-Employment and Other Long-Term Employees Benefits - Reconciliation for Plan Assets Measured at Fair Value Using Unobservable Inputs (Level 3) (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Change in plan assets: | ||
| Plan assets at fair value at beginning of year | $ 646 | |
| Foreign currency translation adjustment | $ 0 | |
| Plan assets at fair value at end of year | 717 | 646 |
| Significant Unobservable Inputs (Level 3) | ||
| Change in plan assets: | ||
| Plan assets at fair value at beginning of year | 232 | 233 |
| Contributions (employer and employee) | 7 | 25 |
| Actual return on plan assets | 13 | 15 |
| Net benefit payment | (4) | (13) |
| Net transfers in (out of) Level 3 | 10 | |
| Settlements | (11) | |
| Foreign currency translation adjustment | 16 | (17) |
| Plan assets at fair value at end of year | $ 274 | $ 232 |
| X | ||||||||||
- Definition The increase in the fair value of plan assets from contributions made by the employer and employee. No definition available.
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- Definition Defined Benefit Plan, Plan Assets, Increase (Decrease) for Net Benefits Payments No definition available.
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- Definition Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase (decrease) in plan assets of defined benefit plan from assets transferred into (from) plan. No definition available.
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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