Quarterly report pursuant to Section 13 or 15(d)

Litigation (Details)

v3.20.4
Litigation (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Feb. 29, 2020
Commitments and Contingencies Disclosure [Abstract]    
Loss contingency, maximum potential loss $ 31  
Disallowance $ 19 $ 12