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Intangibles (Schedule Of Intangible Assets) (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Intangible Assets [Line Items]    
Gross Carrying Amount $ 4,441 $ 4,441
Accumulated Amortization (1,418) (1,177)
Net Carrying Amount 3,023 3,264
Customer Relationships - Business [Member]    
Intangible Assets [Line Items]    
Gross Carrying Amount 800 800
Accumulated Amortization (321) (267)
Net Carrying Amount 479 533
Customer Relationships - Wholesale [Member]    
Intangible Assets [Line Items]    
Gross Carrying Amount 3,491 3,491
Accumulated Amortization (964) (800)
Net Carrying Amount 2,527 2,691
Trademarks and Tradenames [Member]    
Intangible Assets [Line Items]    
Gross Carrying Amount 150 150
Accumulated Amortization (133) (110)
Net Carrying Amount $ 17 $ 40