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Restructuring Charges (Tables)
9 Months Ended
Jan. 27, 2012
Restructuring Charges [Abstract]  
Schedule of Restructuring Reserve
  Fiscal Year 2011 Initiative
(in millions) Employee        
Termination Asset  Other   
Costs Write-downs  Costs Total
Balance as of April 30, 2010 $ - $ - $ - $ -
Restructuring charges   162   24   71   257
Payments/write-downs   (5)   (24)   (24)   (53)
Balance as of April 29, 2011 $ 157 $ - $ 47 $ 204
Payments/write-downs   (63)   -   (13)   (76)
Balance as of July 29, 2011 $ 94 $ - $ 34 $ 128
Payments/write-downs   (43)   -   (15)   (58)
Balance as of October 28, 2011 $ 51 $ - $ 19 $ 70
Payments/write-downs   (12)   -   (5)   (17)
Balance as of January 27, 2012 $ 39 $ - $ 14 $ 53