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Long-Term Employee Benefit Liabilities - Company's Retirement Medical Benefits Plans (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]    
Non-current liability $ 667 $ 504
Retirement Medical Benefits Plans [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Beginning of year 32 41
Interest cost 1 1
Actuarial losses (gains) and changes in actuarial assumptions (1) (7)
Benefits paid (1) (2)
Foreign exchange   (1)
Ending funded status 31 32
Current liability 2 2
Non-current liability 29 30
Net amount 31 32
Unrecognized past service costs 1 1
Unrecognized actuarial gains 11 11
Total amounts included in accumulated other comprehensive loss 12 12
Past service cost amortization (1) (1)
Net periodic benefit cost   1
Retirement Medical Benefits Plans [Member] | Net Periodic Benefit Costs [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Interest cost $ 1 $ 2