Finance Receivables and Loans, Net (Schedule of Purchases of Financing Receivables and Loans) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total purchases of finance receivables and loans	$ 1,085	$ 2,367	$ 1,852	$ 3,685
Consumer | Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total purchases of finance receivables and loans	1,080	1,558	1,838	2,051
Consumer | Consumer mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total purchases of finance receivables and loans	5	808	7	1,633
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total purchases of finance receivables and loans	$ 0	$ 1	$ 7	$ 1