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Company Restructuring (Tables)
12 Months Ended
Dec. 31, 2012
Company Restructuring  
Schedule of changes in the restructuring liability

 

 

($ in millions)
  Employee
costs
  Exit
costs
  Total
liability
 

Balance as of December 31, 2011

  $ 5   $ 5   $ 10  

Expense incurred

    10     5     15  

Adjustments to liability

             

Payments applied against liability

    (9 )   (7 )   (16 )
               

Balance as of December 31, 2012

  $ 6   $ 3   $ 9