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Securitized or Asset-Backed Financing Arrangement Small Business Association Loan Small Business Association Loan [Member] Small Business Association Loan Grants (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Unsecured personal loans Financing Receivable [Member] Use of Estimates Use of Estimates, Policy [Policy Text Block] Principal payments Cash received Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Discount rates, impact of 200 basis point increase Sensitivity Analysis Of Fair Value, Loans Invested In By Company, Impact Of Adverse Change In Discount Rate, 200 Basis Point Increase Sensitivity Analysis Of Fair Value, Loans Invested In By Company, Impact Of Adverse Change In Discount Rate, 200 Basis Point Increase Total capital Banking Regulation, Total Capital, Actual Income tax effect Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Occupancy Occupancy Occupancy Occupancy, Net Present value of future minimum lease payments Sales-type and Direct Financing Leases, Lease Receivable Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Insider Trading Arrangements [Line Items] Prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year Current Financial Asset, Not Past Due [Member] Allowance for Credit Losses Allowance for credit losses, beginning of period Allowance for credit losses, end of period Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Total liabilities Liabilities % of unsecured personal loans at amortized cost as of period end Financing Receivable, Excluding Accrued Interest, Modified in Period, to Total Financing Receivables, Percentage Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Gross increase – tax positions related to current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Property, Equipment and Software Property, Plant and Equipment, Other Types [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Purchase of servicing asset investment Payment To Acquire Servicing Asset Payment To Acquire Servicing Asset Benefit from intraperiod tax allocation Effective Income Tax Rate Reconciliation, Benefit From Intraperiod Tax Allocation, Percent Effective Income Tax Rate Reconciliation, Benefit From Intraperiod Tax Allocation, Percent Consolidation Items [Axis] Consolidation Items [Axis] New York MCTD New York MCTD [Member] New York MCTD Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member]