Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Nonrecurring Fair Value Inputs (Details)

v3.19.1
Fair Value Measurements - Nonrecurring Fair Value Inputs (Details) - Loans and leases - Nonrecurring - Level 3
$ in Millions
Mar. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair Value $ 120 $ 474
Measurement Input, Discount Rate | Market Comparables | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Inputs 0.13 0.13
Measurement Input, Discount Rate | Market Comparables | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Inputs 0.59 0.59
Measurement Input, Discount Rate | Market Comparables | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Inputs 0.25 0.25
Measurement Input, Cost to Sell | Market Comparables | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Inputs 0.08 0.08
Measurement Input, Cost to Sell | Market Comparables | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Inputs 0.26 0.26
Measurement Input, Cost to Sell | Market Comparables | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Inputs 0.09 0.09