Registration of securities issued in business combination transactions

Schedule II-Valuation and Qualifying Accounts

v2.4.0.6
Schedule II-Valuation and Qualifying Accounts
12 Months Ended
Dec. 31, 2012
Schedule II-Valuation and Qualifying Accounts  
Schedule II-Valuation and Qualifying Accounts

Schedule II—Valuation and Qualifying Accounts
(Dollars in Millions)

Column A
  Column B   Column C    
  Column D   Column E  
 
   
  Additions    
   
   
 
Description
  Balance at
Beginning of
Period
  Charges
(Credits)
to cost and
expenses
  Charged to
other
accounts
  Deductions   Balance at
End of
Period
 

Allowance for Doubtful Accounts:

                               

Year ended December 31, 2012

  $ 46   $ 4   $ (3 ) $   $ 47  

Year ended December 31, 2011

    52     (4 )   (2 )       46  

Year ended December 31, 2010

    56     6     (10 )       52