Common Stock (Details) In Millions, unless otherwise specified	12 Months Ended
	Oct. 31, 2012
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 share repurchase plan	8.0
Non-voting common stock shares repurchased and retired under the Company's current share repurchase plan during the period	4.0
Non-voting shares remaining to be repurchased and retired under the Company's current share repurchase plan as of the end of the period	3.9