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Post Employment and Other Long Term Employees Benefits - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Compensation And Retirement Disclosure [Abstract]      
Expected amortization of actuarial losses in year 2014 $ 2    
Expected amortization of past service cost in year 2014 1    
Employer contributions 29 34  
Expected contribution in cash 26    
Accrued benefits related to defined contribution pension plans 19 19  
Annual cost of defined contribution plans $ 89 $ 94 $ 98