Other Operating Expenses (Schedule Of Other Operating Expenses) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Expenses [Abstract]
Insurance commissions	$ 562	$ 517	$ 475
Technology and communications	345	314	311
Advertising and marketing	241	171	180
Lease and loan administration	222	203	172
Property and equipment depreciation	153	136	96
Professional services	146	118	126
Regulatory and licensing fees	75	96	115
Vehicle remarketing and repossession	74	73	105
Charitable contributions	63	43	8
Occupancy	62	57	57
Non-income taxes	34	28	34
Amortization of intangible assets	20	18	13
Other	209	270	194
Total other operating expenses	$ 2,206	$ 2,044	$ 1,886