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Income Taxes - Summary of Income (Loss) Before Income Taxes (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
U.S. operations (including exports) $ (136) $ (375) $ 114
International operations 315 251 1,041
Income (loss) before income taxes $ 179 $ (124) $ 1,155