Fair Value Measurements (Additional quantitative informatiom ) (Details) - Level 3	Sep. 30, 2019
Sales Approach | Cost to Sell | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans	6.1
Sales Approach | Cost to Sell | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans	50.7
Sales Approach | Cost to Sell | Weighted average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans	19.0
Impaired loans | Appraisal of collateral | Appraisal Adjustment | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans	23.6
Impaired loans | Appraisal of collateral | Appraisal Adjustment | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans	28.9
Impaired loans | Appraisal of collateral | Appraisal Adjustment | Weighted average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans	27.3