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Other Income - Net (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Other Income and Expenses [Abstract]      
Pension and other postretirement benefits (Note 12) $ 102 $ 91 $ 63
COLI – net 17 85 69
Other (42) (23) (26)
Other income – net $ 77 $ 153 $ 106