Pensions and Other Postretirement Benefits - Benefit Cost Components (Details) - USD ($) $ in Millions |
12 Months Ended | ||
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Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
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Pension Benefits | |||
Defined Benefit Plan Disclosure [Line Items] | |||
Service cost | $ 25 | $ 40 | $ 43 |
Interest cost | 108 | 67 | 55 |
Expected return on plan assets | (208) | (213) | (193) |
Amortization of net losses | 4 | 49 | 66 |
Amortization of prior service benefit | (1) | 0 | 0 |
Net cost (benefit) | (72) | (57) | (29) |
Other Postretirement Benefits | |||
Defined Benefit Plan Disclosure [Line Items] | |||
Service cost | 4 | 6 | 6 |
Interest cost | 17 | 9 | 7 |
Expected return on plan assets | (11) | (13) | (12) |
Amortization of net losses | 0 | 0 | 1 |
Amortization of prior service benefit | (26) | (25) | (26) |
Net cost (benefit) | $ (16) | $ (23) | $ (24) |
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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