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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 $ 632 $ 654 $ 450
State 55 44 34
Foreign 592 357 751
Total current income tax provision 1,279 1,055 1,235
Deferred:      
Federal (157) (147) (23)
State (12) (1) (3)
Foreign (167) 58 (315)
Total deferred income tax provision (336) (90) (341)
Total income tax provision $ 943 $ 965 $ 894