Other Intangibles (Schedule Of Intangible Assets) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Intangible Assets [Line Items]
Gross Carrying Amount	$ 4,441	$ 4,441
Accumulated Amortization	(294)	(214)
Net Carrying Amount	4,147	4,227
Customer Relationships - Business [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	800	800
Accumulated Amortization	(67)	(48)
Net Carrying Amount	733	752
Customer Relationships - Wholesale [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	3,491	3,491
Accumulated Amortization	(200)	(146)
Net Carrying Amount	3,291	3,345
Trademarks and Tradenames [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	150	150
Accumulated Amortization	(27)	(20)
Net Carrying Amount	$ 123	$ 130