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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