Loans Supplemental Loan Information (Details) - Consumer Portfolio Segment	3 Months Ended
	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