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General (Details 2) - USD ($)
$ in Millions
3 Months Ended
Jan. 24, 2016
Jan. 25, 2015
Revocable standby letters of credit    
Guarantees    
Guarantee term P1Y  
Letters of Credit Outstanding, Amount $ 4.0  
Rabbi trust    
Investments    
Losses) gains related to securities held $ (1.7) $ 1.5