Operating Segments - Reconciliation of Segment Operating Income to Consolidated Income Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Segment Reporting [Abstract]
Total profit for reportable segments	$ 102,850	$ 114,455	$ 242,082	$ 261,148
Interest expense	(4,504)	(3,810)	(12,907)	(10,917)
Interest and investment income	111	137	349	466
Other - net	2	(236)	(787)	(851)
Income before income taxes	$ 98,459	$ 110,546	$ 228,737	$ 249,846