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Taxes - Summary of Components of Income Tax (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
U.S. federal      
Current $ 174 $ (182) $ (73)
Deferred 1,004 (1,315) (1,074)
State and local      
Current 222 65 153
Deferred 202 (152) (172)
Total United States 1,602 (1,584) (1,166)
International      
Current 4,854 1,833 4,577
Deferred (506) (2,141) (720)
Total International 4,348 (308) 3,857
Total income tax expense (benefit) $ 5,950 $ (1,892) $ 2,691