Securitizations and Variable Interest Entities (Schedule of Cash Flows with Nonconsolidated Special-Purpose Entities) (Details) - Off-balance sheet variable interest entities - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Flow Received and Paid to Nonconsolidated Securitization Entities [Line Items]
Total	$ 389	$ 4	$ 13
Automotive | Consumer
Cash Flow Received and Paid to Nonconsolidated Securitization Entities [Line Items]
Cash proceeds from transfers completed during the period	238	0	0
Cash flows received on retained interests in securitization entities	0	0	12
Servicing fees	1	0	3
Cash disbursements for repurchases during the period	0	0	2
Consumer other | Consumer
Cash Flow Received and Paid to Nonconsolidated Securitization Entities [Line Items]
Cash proceeds from transfers completed during the period	137	4	0
Servicing fees	$ 13	$ 0	$ 0