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Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Current:      
U.S. $ 21 $ 23 $ (26)
Non-U.S. 21 37 48
Income tax expense (benefit), current 42 60 22
Deferred:      
U.S. 11 (11) (15)
Non-U.S. 11 (14) (308)
Income tax expense (benefit), deferred 22 (25) (323)
Income tax expense (benefit) $ 64 $ 35 $ (301)