Other Operating Expenses (Schedule Of Other Operating Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating Expenses [Abstract]
Insurance commissions	$ 151	$ 138	$ 300	$ 274
Technology and communications	100	81	197	159
Advertising and marketing	77	45	149	86
Lease and loan administration	54	57	105	112
Professional services	47	28	90	61
Property and equipment depreciation	41	38	80	74
Regulatory and licensing fees	22	17	48	35
Vehicle remarketing and repossession	22	17	42	38
Amortization of intangible assets	8	4	16	9
Charitable contributions	6	54	7	55
Other	84	76	149	137
Total other operating expenses	$ 612	$ 555	$ 1,183	$ 1,040