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Pension and Other Postretirement Benefits - Narrative (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022 | Jul. 31, 2023 | Jun. 30, 2023 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |
Change in accrued other postretirement benefits liability |  |  | $ 10 |  |  |  |  |
Settlements |  |  |  |  |  | $ 0 | $ 5 | $ 58
Average duration for plans' projected cash flows (in years) |  |  |  |  |  | 9 years |  |
Period expected long-term rate of return is applied (in years) |  |  |  |  |  | 5 years |  |
Expected long-term rate of return on plan assets |  |  |  |  |  | 6.70% | 6.70% | 6.70%
Number of years over actual annual healthcare cost trend experience |  |  |  |  |  | 20 years |  |
Health care cost trend rate assumed for next year |  | 5.50% |  |  |  | 5.50% | 5.50% | 5.50%
Defined benefit plan, ultimate health care cost trend rate |  | 4.50% |  |  |  | 4.50% | 4.50% | 4.50%
Pension contributions |  |  |  |  |  | $ 79 | $ 36 | $ 43
Contribution next fiscal year |  |  |  |  |  | 60 |  |
Expenses related to defined contribution plan |  |  |  |  |  | $ 92 | 82 | 76
Minimum |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |
Defined benefit plan, ultimate health care cost trend rate |  |  |  |  |  | (0.40%) |  |
Maximum |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |
Defined benefit plan, ultimate health care cost trend rate |  |  |  |  |  | 1.50% |  |
United States |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |
Pension contributions |  |  |  |  |  | $ 79 | 36 |
Contribution next fiscal year |  |  |  |  |  | 44 |  |
United States | Scenario, forecast |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |
Expected long-term rate of return on plan assets |  |  |  |  | 7.00% |  |  |
Pension benefits |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |
Settlements |  |  |  | $ 3 |  | 0 | 5 | 58
Pension benefits | United States |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |
Increase (decrease) in obligation, pension benefits | $ 19 |  |  |  |  |  |  |
Settlements |  |  |  |  |  |  |  | 41
Pension benefits | Foreign Plan |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |
Increase (decrease) in obligation, pension benefits |  | $ 2 |  |  |  |  |  |
Other postretirement benefits |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |
Settlements |  |  |  |  |  | $ 0 | 0 | 0
Number of years over actual annual healthcare cost trend experience |  |  |  |  |  | 3 years |  |
Pension Settlement Cost |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges |  |  |  |  |  |  | $ 2 | $ 17

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