Benefit Plans (Schedule of Components of Net Periodic Pension Cost) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Pension [Member] | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Service cost | $ 10 | $ 9 | $ 18 | $ 18 |
| Interest cost | 73 | 80 | 145 | 159 |
| Expected return on plan assets | (99) | (108) | (198) | (215) |
| Amortization: | ||||
| Net loss (gain) | 24 | 12 | 48 | 25 |
| Prior service cost (credit) | 2 | 1 | 3 | 2 |
| Net periodic benefit cost (income) | 10 | (6) | 16 | (11) |
| Postretirement Benefit Plan [Member] | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Service cost | 3 | 3 | 5 | 6 |
| Interest cost | 12 | 14 | 25 | 28 |
| Expected return on plan assets | (1) | (1) | (2) | (2) |
| Amortization: | ||||
| Net loss (gain) | (2) | (3) | (5) | (6) |
| Prior service cost (credit) | (10) | (10) | (20) | (20) |
| Net periodic benefit cost (income) | $ 2 | $ 3 | $ 3 | $ 6 |
| X | ||||||||||
- References No definition available.
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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/disclosureRef
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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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- Details
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- Details
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