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Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2013
Assets and Liabilities Measured at Fair Value on Recurring Basis and Subject to Fair Value Disclosure Requirements

The Company’s assets measured at fair value on a recurring basis and subject to fair value disclosure requirements at December 31, 2013 and 2012 were as follows:

 

            Fair Value Measurements at Reporting Date Using  
            Quoted Prices in      Significant         
            Active Markets      Other      Signficant  
            for Identical      Observable      Unobservable  
            Assets      Inputs      Inputs  
In millions    Total      (Level 1)      (Level 2)      (Level 3)  

Assets

           

Money market funds, December 31, 2013

   $ 318       $ 318       $ 0       $ 0   

Money market funds, December 31, 2012

   $ 260       $ 260       $ 0       $ 0