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Stockholders' Equity - Summary of Non-controlling Interests (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Equity [Abstract]        
Beginning Balance     $ 227 $ 228
Investment by non-controlling interest       1
Comprehensive income (loss):        
Net income (loss) $ 4 $ 5 6 7
Foreign currency adjustments, net of income tax     2 (7)
Ending Balance $ 235 $ 229 $ 235 $ 229