XML 95 R67.htm IDEA: XBRL DOCUMENT v3.22.0.1
Financial Instruments (Schedule of AFS Unrealized Gain (Loss)) (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Unrealized gross gains $ 9.7 $ 20.9
Unrealized gross losses 5.2 0.5
Fair value of securities in an unrealized gain position 250.7 348.9
Fair value of securities in an unrealized loss position $ 290.2 $ 11.4