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Tax (Tables)
6 Months Ended
Jun. 30, 2013
Income Tax Disclosure [Abstract]  
Difference Between Effective Tax Rate

The difference between the effective tax rate reflected in the provision for income taxes and the U.S. federal statutory rate of 35% was as follows (in millions):

 

     Three Months Ended
June 30,
    Six Months Ended
June 30,
 
     2013     2012     2013     2012  

Federal income tax at U.S. federal statutory rate

   $ 270      $ 310      $ 523      $ 616   

Foreign income tax rate differential

     (65     (57     (122     (80

State income tax, net of federal benefit

     4        9        12        17   

Nondeductible expenses

     8        10        16        23   

Tax benefit of manufacturing deduction

     (8     (9     (16     (18

Foreign dividends, net of foreign tax credits

     8        14        12        20   

Tax impact of foreign exchange

     21        12        39        (18

Other

     1        (4     (1     (6
  

 

 

   

 

 

   

 

 

   

 

 

 

Provision for income taxes

   $ 239      $ 285      $ 463      $ 554