Capital Shares - Capital Shares (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Equity [Abstract]
Number of Shares	5,360	2,224	459
Total Amount	$ 381,598	$ 163,584	$ 30,443
Average per Share	$ 71.19	$ 73.55	$ 66.29