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Benefit Plans (Components of Net Periodic Cost (Benefit)) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items] |  |  |
Interest cost on projected benefit obligation | $ 87 | $ 98 | $ 67
DefinedBenefitPlanNetPeriodicBenefitCostCreditExpectedReturnLossStatementOfIncomeOrComprehensiveIncomeExtensibleListNotDisclosedFlag | Expected return on plan assets |  |
Expected return on plan assets | $ (116) | (119) | (152)
DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationOfGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleListNotDisclosedFlag | Amortization of net actuarial loss (gain) |  |
Amortization of net actuarial loss (gain) | $ 29 | 33 | 30
Pension settlement transaction loss | 371 | 0 | 0
Total net periodic pension cost (benefit) | $ 371 | $ 12 | $ (55)
Defined benefit plan net periodic benefit cost credit settlement gain loss statement of income or comprehensive income extensible list not disclosed flag | Pension settlement transaction loss | Pension settlement transaction loss | Pension settlement transaction loss
DefinedBenefitPlanNetPeriodicBenefitCostCreditInterestCostStatementOfIncomeOrComprehensiveIncomeExtensibleListNotDisclosedFlag | Interest cost on projected benefit obligation | Interest cost on projected benefit obligation |
Pension Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Interest cost on projected benefit obligation | $ 87 | $ 98 |

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