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Tax (Tables)
6 Months Ended
Jun. 30, 2015
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,
 
     2015      2014      2015      2014  

Federal income tax at U.S. federal statutory rate

   $ 137       $ 312       $ 313       $ 588   

Foreign income tax rate differential

     (41      (51      (87      (98

State income tax, net of federal benefit

     —           9         3         15   

Nondeductible expenses

     12         8         17         19   

Tax benefit of manufacturing deduction

     —           (10      (10      (17

Foreign dividends, net of foreign tax credits

     8         12         15         21   

Tax impact of foreign exchange

     (19      6         (18      (2

Change in tax reserves

     —           —           69         —     

Other

     8         (2      (8      (3
  

 

 

    

 

 

    

 

 

    

 

 

 

Provision for income taxes

   $ 105       $ 284       $ 294       $ 523