Intangibles (Schedule Of Intangible Assets) (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Intangible Assets [Line Items]
Gross Carrying Amount	$ 4,441	$ 4,441
Accumulated Amortization	(1,257)	(1,177)
Net Carrying Amount	3,184	3,264
Customer Relationships - Business [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	800	800
Accumulated Amortization	(285)	(267)
Net Carrying Amount	515	533
Customer Relationships - Wholesale [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	3,491	3,491
Accumulated Amortization	(855)	(800)
Net Carrying Amount	2,636	2,691
Trademarks and Tradenames [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	150	150
Accumulated Amortization	(117)	(110)
Net Carrying Amount	$ 33	$ 40