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Income Taxes - Income Before Income Taxes (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]      
United States $ (41) $ (85) $ (79)
Foreign 17 72 106
Total (loss) income before income taxes $ (24) $ (13) $ 27