Common Stock (Details)
shares in Millions
 12 Months Ended
Oct. 31, 2016
shares
Common Stock Disclosure Details [Abstract]  
Amount of non-voting common stock shares authorized by the Company's Board of Directors to be repurchased under the current share repurchase plan 8.0
Non-voting common stock shares repurchased and retired under the Company's current share repurchase plan during the period 5.1
Non-voting common stock shares repurchased and retired under the Company's previous repurchase authorization during the period 2.2
Non-voting shares remaining to be repurchased and retired under the Company's current share repurchase plan as of the end of the period 2.9
Date on which the current Non-Voting Common Stock share repurchase program was announced Jan. 13, 2016