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Pension and Other Post-Employment Benefits (Estimate Of Benefit Payments For The Next 10 Years) (Details)
$ in Millions
Dec. 31, 2025
USD ($)
Pension Benefits [Member]  
Defined Benefit Plan Disclosure [Line Items]  
2026 $ 11
2027 11
2028 11
2029 11
2030 10
2031 - 2035 45
OPEB [Member]  
Defined Benefit Plan Disclosure [Line Items]  
2026 5
2027 4
2028 4
2029 4
2030 3
2031 - 2035 $ 17