XML 107 R91.htm IDEA: XBRL DOCUMENT v3.6.0.2
Post-Employment and Other Long-Term Employees Benefits - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]      
Expected amortization of actuarial losses in year 2016 $ 9    
Pension plans with accumulated benefit obligations in excess of plan assets, accumulated benefit obligation 738 $ 547  
Pension plans with accumulated benefit obligations in excess of plan assets, fair value of plan assets 443 284  
Accrued benefits related to defined contribution pension plans 16 16  
Annual cost of defined contribution plans 70 70 $ 81
Pension Benefits [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Pension plans with benefit obligations in excess of plan assets, benefit obligation 811 653  
Pension plans with benefit obligations in excess of plan assets, fair value of plan assets 464 302  
Employer contributions 27 $ 28  
Expected contribution in cash $ 28