Finance Receivables and Loans, Net - Schedule of Consumer Concentration Risk (Details) - Consumer - Financing Receivable - Geographic Concentration Risk	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	26.00%
Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage		26.40%
Automotive
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	100.00%	100.00%
Automotive | California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	8.50%	8.50%
Automotive | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	13.50%	13.70%
Automotive | Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	9.30%	9.50%
Automotive | North Carolina
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	4.60%	4.30%
Automotive | Pennsylvania
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	4.50%	4.50%
Automotive | Georgia
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	4.00%	4.10%
Automotive | New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3.80%	3.70%
Automotive | New Jersey
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3.30%	3.20%
Automotive | Illinois
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3.20%	3.30%
Automotive | Ohio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3.30%	3.40%
Automotive | Other United States
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	42.00%	41.80%
Consumer mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	100.00%	100.00%
Consumer mortgage | California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	39.90%	39.20%
Consumer mortgage | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	7.20%	7.30%
Consumer mortgage | Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	6.20%	6.50%
Consumer mortgage | North Carolina
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	1.90%	1.90%
Consumer mortgage | Pennsylvania
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	2.10%	2.10%
Consumer mortgage | Georgia
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	2.90%	2.90%
Consumer mortgage | New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	1.90%	1.90%
Consumer mortgage | New Jersey
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	2.50%	2.40%
Consumer mortgage | Illinois
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	2.80%	2.80%
Consumer mortgage | Ohio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	0.40%	0.40%
Consumer mortgage | Other United States
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	32.20%	32.60%
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	100.00%	100.00%
Other | California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	9.30%	9.40%
Other | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	7.80%	7.60%
Other | Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	9.10%	9.00%
Other | North Carolina
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3.00%	2.90%
Other | Pennsylvania
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	4.10%	4.20%
Other | Georgia
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3.70%	3.70%
Other | New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	5.40%	5.40%
Other | New Jersey
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	3.50%	3.70%
Other | Illinois
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	4.60%	4.60%
Other | Ohio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	4.50%	4.50%
Other | Other United States
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	45.00%	45.00%