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Pension and Other Post-Employment Benefits (Recognized Amounts In Other Comprehensive Income) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items] |  |  |
Amortization of Net Actuarial Gains and (Losses) | $ 6 | $ 7 | $ 8
Curtailment of Net Prior Service Costs | 1 | 0 | 0
Total Amounts Recognized in Other Comprehensive (Income) Loss, After Tax | 3 | 4 | 4
Defined Benefits [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net Actuarial (Gains) Losses | (1) | (1) | (4)
Amortization of Net Actuarial Gains and (Losses) | 0 | 0 | 0
Curtailment of Net Prior Service Costs | 0 | 0 | 0
Total Amounts Recognized in Other Comprehensive (Income) Loss, Before Tax | (1) | (1) | (4)
Total Amounts Recognized in Other Comprehensive (Income) Loss, After Tax | (1) | (1) | (3)
OPEB [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net Actuarial (Gains) Losses | 0 | (1) | 1
Amortization of Net Actuarial Gains and (Losses) | 6 | 7 | 8
Curtailment of Net Prior Service Costs | (1) | 0 | 0
Total Amounts Recognized in Other Comprehensive (Income) Loss, Before Tax | 5 | 6 | 9
Total Amounts Recognized in Other Comprehensive (Income) Loss, After Tax | $ 4 | $ 5 | $ 7

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