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Projected Benefit Obligations, Accumulated Benefit Obligations and Fair Value of Plan Assets (Detail) (Pension Plans, USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
U.S. Pension Plans
   
Defined Benefit Plan Disclosure [Line Items]    
Projected benefit obligation $ 86 $ 1,389
Accumulated benefit obligation 73 1,218
Fair value of plan assets 2 903
Non-U.S. Pension Plans
   
Defined Benefit Plan Disclosure [Line Items]    
Projected benefit obligation 8,379 9,539
Accumulated benefit obligation 8,197 9,230
Fair value of plan assets $ 6,571 $ 7,119