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Restructuring and Other Charges (Tables)
9 Months Ended
Sep. 30, 2012
Roll Forward of Restructuring Reserve

Amounts related to activities that are part of our restructuring reserves are as follows:

 

     December 31,
2011
Restructuring
Reserve
     2012
Expenses
     2012
Cash
Payments
    September 30,
2012
Restructuring
Reserve
 
     (Millions)  

Employee Severance and Termination Benefits

   $ 1         6         (6   $ 1