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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2012
Future Minimum Lease Commitments Under Non-Cancellable Operating Leases with Initial or Remaining Terms of One Year or More

Future minimum lease commitments under noncancellable operating leases with initial or remaining terms of one year or more at December 31, 2012, are payable as follows (in millions):

 

2013

   $ 220   

2014

     176   

2015

     146   

2016

     111   

2017

     91   

Thereafter

     375   
  

 

 

 

Total future lease commitments

   $ 1,119