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Tax (Tables)
6 Months Ended
Jun. 30, 2014
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,
 
     2014     2013     2014     2013  

Federal income tax at U.S. federal statutory rate

   $ 312      $ 249      $ 588      $ 482   

Foreign income tax rate differential

     (51     (65     (98     (122

State income tax, net of federal benefit

     9        4        15        12   

Nondeductible expenses

     8        8        19        16   

Tax benefit of manufacturing deduction

     (10     (8     (17     (16

Foreign dividends, net of foreign tax credits

     12        8        21        12   

Tax impact of foreign exchange

     6        21        (2     39   

Other

     (2     1        (3     —     
  

 

 

   

 

 

   

 

 

   

 

 

 

Provision for income taxes

   $ 284      $ 218      $ 523      $ 423