Finance Receivables and Loans, Net (Schedule of Purchases of Financing Receivables and Loans) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total purchases of finance receivables and loans	$ 1,074	$ 2,475	$ 2,926	$ 6,160
Consumer | Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total purchases of finance receivables and loans	1,064	1,346	2,902	3,397
Consumer | Consumer mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total purchases of finance receivables and loans	7	1,127	14	2,760
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total purchases of finance receivables and loans	$ 3	$ 2	$ 10	$ 3