XML 98 R58.htm IDEA: XBRL DOCUMENT v3.20.1
Bank segment - Troubled debt restructuring - narrative (Details) - Troubled debt restructurings real estate loans - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Troubled debt restructurings    
Financing receivable modifications minimum, period of payment default of loans determined to be TDRs (in days) 90 days  
Commitments to lend additional funds to borrows with impaired or modified loans $ 0.0 $ 0.0
Consumer mortgage loans collateralized by residential real estate property in foreclosure process $ 3.7 $ 3.5