Finance Receivables and Loans, Net - Schedule of Sales of Financing Receivables and Loans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total sales and transfers	$ 237	$ 0	$ 1,390	$ 1
Consumer | Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total sales and transfers	0	0	1,108	0
Consumer | Consumer mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total sales and transfers	117	0	117	1
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total sales and transfers	$ 120	$ 0	$ 165	$ 0