Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2021 office
Number of international offices	4
Total consumer lending | Charge off threshold - consumer loan
Threshold period of financing receivable past due, writeoff	180 days
Minimum
Threshold period of financing receivable past due, writeoff	120 days
Minimum | Furniture and Equipment
Estimated useful life of property and equipment	1 year
Minimum | Software and Software Development Costs
Estimated useful life of property and equipment	1 year
Minimum | Total consumer lending | Charge off threshold - consumer loan
Threshold period of financing receivable past due, writeoff	120 days
Maximum
Threshold period of financing receivable past due, writeoff	180 days
Maximum | Furniture and Equipment
Estimated useful life of property and equipment	10 years
Maximum | Buildings
Estimated useful life of property and equipment	40 years
Maximum | Leasehold Improvements
Estimated useful life of property and equipment	15 years
Maximum | Software and Software Development Costs
Estimated useful life of property and equipment	10 years
Maximum | Total consumer lending | Charge off threshold - consumer loan
Threshold period of financing receivable past due, writeoff	180 days