Finance Receivables and Loans, Net (Schedule of Purchases of Financing Receivables and Loans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivables and loans, significant purchases	$ 7,247	$ 6,590
Fair Square Financial Holdings LLC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables and loans	882
Consumer | Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivables and loans, significant purchases	2,506	2,355
Consumer | Mortgage/Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivables and loans, significant purchases	3,853	4,230
Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivables and loans, significant purchases	882	0
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivables and loans, significant purchases	$ 6	$ 5