XML 88 R84.htm IDEA: XBRL DOCUMENT v2.4.0.6
Income Taxes - Difference Between Effective Tax Rate (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Schedule Of Income Before Income Tax Domestic And Foreign Line Items      
Federal income tax at U.S. statutory rate $ 1,227 $ 1,023 $ 839
Foreign income tax rate differential (154) (152) (117)
State income tax, net of federal benefit 31 22 17
Nondeductible expenses 30 42 40
Tax benefit of manufacturing deduction (29) (37) (19)
Foreign dividends, net of foreign tax credits (115) 9 15
Change in deferred tax valuation allowance 80 (18)  
Other (48) 48 (37)
Total income tax provision $ 1,022 $ 937 $ 738