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Employee Benefit Plans - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]      
Accumulated pension benefit obligation $ 113 $ 100  
Pension plans with accumulated benefit obligation in excess of plan assets, projected benefit obligation 116 84  
Pension plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation 108 78  
Pension plans with accumulated benefit obligations in excess of plan assets fair value of plan assets 63 35  
Amount of gains and losses to be amortized to the extent that they exceed 10% of the higher of the market-related value or the projected benefit obligation of each respective plan 10.00%    
Amount Company plans to contribute to the international pension plans 11    
Amount Company plans to contribute to the postemployment benefit obligations plan 4    
U. S. Savings Plan Cost
      
Defined Benefit Plan Disclosure [Line Items]      
Defined contribution plan, cost recognized 21 19 15
International Subsidiary Savings Plan Cost
      
Defined Benefit Plan Disclosure [Line Items]      
Defined contribution plan, cost recognized $ 18 $ 14 $ 11