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Pension and Other Post-Employment Benefits (Accumulated Benefit Obligation And Projected Benefit Obligation In Excess Of The Plan Assets Fair Value) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Defined Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected Benefit Obligation	$ (40)	$ (40)
Accumulated Benefit Obligation	(40)	(40)
Fair Value of Plan Assets	18	20
OPEB [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected Benefit Obligation	(44)	(45)
Accumulated Benefit Obligation	(44)	(45)
Fair Value of Plan Assets	$ 0	$ 0

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