Operating Segments - Reconciliation of Segment Operating Income to Consolidated Income Before Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2014	Jul. 31, 2013
Segment Reporting [Abstract]
Total profit for reportable segments	$ 114,455	$ 93,216	$ 261,148	$ 236,982
Interest expense	(3,810)	(3,353)	(10,917)	(11,045)
Interest and investment income	137	112	466	304
Other-net	(236)	2,699	(851)	934
Income before income taxes	$ 110,546	$ 92,674	$ 249,846	$ 227,175