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Income Taxes - Components of Provision for Income Taxes (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Current:      
Federal $ 680 $ 700 $ 484
State 59 48 37
Foreign 612 371 768
Total current income tax provision 1,351 1,119 1,289
Deferred:      
Federal (151) (151) (28)
State (12)   (3)
Foreign (170) 54 (321)
Total deferred income tax provision (333) (97) (352)
Total income tax provision $ 1,018 $ 1,022 $ 937