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Commitments and Contingencies (Tables)
 9 Months Ended
Jul. 31, 2011
Commitments and Contingencies [Abstract]  
Changes in the warranty reserves
 
                                 
    Three Months Ended     Nine Months Ended  
    July 31,
 		    August 1,
 		    July 31,
 		    August 1,
 		 
    2011     2010     2011     2010  
    (In millions)  
 
Beginning balance
  $ 184     $ 140     $ 155     $ 117  
Provisions for warranty
    43       37       142       103  
Consumption of reserves
    (39 )     (30 )     (109 )     (73 )
                                 
Ending balance
  $ 188     $ 147     $ 188     $ 147