XML 145 R130.htm IDEA: XBRL DOCUMENT v3.20.2
Deposits - Additional Information (Details) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Deposits [Abstract]    
Brokered deposits $ 700 $ 500
Overdrafts in demand deposit accounts reclassified to loans $ 3 $ 4