Benefit Obligations - Schedule of Net Periodic Benefit Costs Recognized (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
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| Pension Benefits | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Service cost | $ 3 | $ 4 | $ 7 | $ 7 |
| Interest cost | 31 | 32 | 60 | 63 |
| Expected return on plan assets | (32) | (34) | (64) | (68) |
| Total | 2 | 2 | 3 | 2 |
| Post-retirement Benefits | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Service cost | 0 | 0 | 0 | 0 |
| Interest cost | 0 | 0 | 1 | 1 |
| Expected return on plan assets | 0 | 0 | 0 | 0 |
| Total | $ 0 | $ 0 | $ 1 | $ 1 |
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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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