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Benefit Plans - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2014
U.S. Pension Plans
 
Defined Benefit Plan Disclosure [Line Items]  
Employer contribution $ 5
Estimated future employer contributions for remainder of the year 5
Non-U.S. Pension Plans
 
Defined Benefit Plan Disclosure [Line Items]  
Employer contribution 196
Estimated future employer contributions for remainder of the year $ 113