Components of Other Income, Net (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
Other Income Net [Line Items]
Interest income	$ 928	$ 450	$ 1,263	$ 928
Interest expense	(456)	(710)	(921)	(727)
Gain (loss) on assets related to deferred compensation plan assets	4,256	3,800	9,669	6,420
Foreign currency exchange gain (loss)	1,505	1,961	5,910	1,986
Other, net	971	852	2,032	1,572
Total	$ 7,204	$ 6,353	$ 17,953	$ 10,179