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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Effective Tax Rate        
Income before income taxes $ 83 $ 2,163 $ 3,055 $ 3,454
Income tax expense $ 16 $ 545 $ 739 $ 840
Effective income tax rate 19.30% 25.20% 24.20% 24.30%
Uncertain Tax Benefits        
Non-current tax liability for uncertain tax benefits $ 23   $ 23  
Uncertain tax benefits, penalties and interest accrued $ 1   $ 1