XML 122 R104.htm IDEA: XBRL DOCUMENT v3.20.4
Employee Benefit Plans - Funded Status Recognized on Balance Sheet (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Defined Pension  Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Other assets $ 108 $ 100
Other liabilities (12) (11)
Net amount recognized as of December 31, 96 89
Other Postretirement Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Other assets 0 0
Other liabilities (15) (21)
Net amount recognized as of December 31, $ (15) $ (21)