Pension, Savings and Other Postretirement Benefit Plans - Changes in Fair Value of Non-U.S. Pension Plan Insurance Contracts (Details) - Non-U.S. - Pension Plans - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2025 |
Dec. 31, 2024 |
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| Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] | ||
| Beginning balance | $ 1,906 | $ 2,146 |
| Foreign currency translation | (134) | 79 |
| Ending balance | 1,964 | 1,906 |
| Significant Unobservable Inputs (Level 3) | Alternatives, Insurance Contracts | ||
| Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] | ||
| Beginning balance | 23 | 21 |
| Purchases, sales, issuance and settlements (net) | 0 | 2 |
| Unrealized gains relating to instruments still held at the reporting date | (1) | 1 |
| Foreign currency translation | 2 | (1) |
| Ending balance | $ 24 | $ 23 |
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- Definition Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from actual return (loss) on assets still held. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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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, measured using unobservable input, of increase (decrease) in plan asset of defined benefit plan from purchase, sale and settlement of trade associated with underlying investment. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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