Finance Receivables and Loans, Net (Schedule of Financing Receivables, Nonaccrual Status) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	$ 1,454	$ 1,436	$ 1,522
Financing receivable, nonaccrual, with no allowance	519	568
Financing receivable, nonaccrual, interest income	13	13
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	1,292	1,179	1,361
Financing receivable, nonaccrual, with no allowance	484	485
Consumer | Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	1,187	1,078	1,256
Financing receivable, nonaccrual, with no allowance	445	423
Consumer | Consumer mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	49	85	102
Financing receivable, nonaccrual, with no allowance	39	62
Consumer | Mortgage Finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	34	59	67
Financing receivable, nonaccrual, with no allowance	25	39
Consumer | Mortgage - Legacy
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	15	26	35
Financing receivable, nonaccrual, with no allowance	14	23
Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	56	16	3
Financing receivable, nonaccrual, with no allowance	0	0
Consumer | Personal Lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	13	5	3
Financing receivable, nonaccrual, with no allowance	0	0
Consumer | Credit Card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	43	11	0
Financing receivable, nonaccrual, with no allowance	0	0
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	162	257	161
Financing receivable, nonaccrual, with no allowance	35	83
Commercial | Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	5	33	40
Financing receivable, nonaccrual, with no allowance	2	32
Commercial | Consumer mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	0	3	5
Financing receivable, nonaccrual, with no allowance	0	3
Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, nonaccrual status	157	221	$ 116
Financing receivable, nonaccrual, with no allowance	$ 33	$ 48