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Derivative Financial Instruments Derivative Financial Instruments (Details 2) - Non-hedging - Commercial loan/lease - Interest rate swap
Jun. 30, 2020
Dec. 31, 2019
Interest rate received    
Derivative [Line Items]    
Weighted average fixed interest rate 3.23% 3.94%
Interest rate paid    
Derivative [Line Items]    
Weighted average fixed interest rate 1.44% 3.26%