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Equity Tax amounts in components of other comprehensive income (loss) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Statement of Comprehensive Income [Abstract]    
Available-for-sale securities $ (1) $ (1)
Foreign currency translation adjustment 6 8
Actuarial loss relating to pension and other postretirement benefits 1 3
Other Comprehensive Income (Loss), Tax $ 6 $ 10