XML 95 R103.htm IDEA: XBRL DOCUMENT v3.20.1
Derivative Financial Instruments - Schedule of Cumulative Basis Adjustments For Fair Value Hedges (Parenthetical) (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Derivative Instruments And Hedging Activities Disclosure [Abstract]  
Amortized cost basis of closed portfolios used in hedging relationships $ 62.4
Cumulative basis adjustments associated with hedging relationships 0.3
Designated hedged items $ 20.0