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Derivatives (Tables)
9 Months Ended
Dec. 31, 2011
Derivatives [Abstract]  
Effect of interest rate and foreign exchange derivatives on Consolidated Statement of Operations
                 

Location of Amounts Recognized

  Amount of Net (Gain)/Loss Recognized in the
Condensed Consolidated Statements of Operations
(in millions)
 
  Three Months Ended
December 31, 2011
    Three Months Ended
December 31, 2010
 

Interest expense, net – interest rate swaps designated as cash flow hedges

  $ —       $ 1  

Interest expense, net – interest rate swaps designated as fair value hedges

  $ (3   $ (3

Other expenses (gains), net – foreign currency contracts

  $ 8     $ 1  

 

                 

Location of Amounts Recognized

  Amount of Net (Gain)/Loss Recognized in the
Condensed Consolidated Statements of Operations
(in millions)
 
  Nine Months Ended
December 31, 2011
    Nine Months Ended
December 31, 2010
 

Interest expense, net – interest rate swaps designated as cash flows hedges

  $ —       $ 4  

Interest expense, net – interest rate swaps designated as fair value hedges

  $ (9   $ (9

Other expenses (gains), net – foreign currency contracts

  $ 9     $ 9