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Loans Supplemental Loan Information (Details) - Consumer Portfolio Segment | 3 Months Ended
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Mar. 31, 2019
Credit Card Receivable | Minimum |
Schedule of Financing Receivable Terms [Line Items] |
Principal repayment terms, period | 1 year
Credit Card Receivable | Maximum |
Schedule of Financing Receivable Terms [Line Items] |
Principal repayment terms, period | 5 years
Automobile Loan | Minimum |
Schedule of Financing Receivable Terms [Line Items] |
Principal repayment terms, period | 3 years
Automobile Loan | Maximum |
Schedule of Financing Receivable Terms [Line Items] |
Principal repayment terms, period | 7 years

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