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Pretax Income (Loss) for Domestic and Foreign Operations (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Tax Disclosure [Abstract]      
United States $ 114 $ 17 $ 127
Foreign 153 194 152
Income before income taxes $ 267 $ 211 $ 279