XML 119 R99.htm IDEA: XBRL DOCUMENT v3.10.0.1
Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Entity Information    
Credit extension commitments $ 2,620.4 $ 2,179.5
Unused credit card lines 1,058.5 775.0
Unused Credit Card Lines    
Entity Information    
Credit extension commitments 726.7 635.3
Standby Letters of Credit    
Entity Information    
Credit extension commitments $ 46.7 $ 50.5