Operating segments and geographic area data (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009
Total consolidated income before income taxes
Total profit (loss) for reportable segments	$ 315,543	$ 234,833	$ (127,807)
Interest expense	(5,069)	(6,263)	(7,771)
Interest and investment income	569	819	492
Other - net	3,518	1,930	7,895
Income (loss) before income taxes	$ 314,561	$ 231,319	$ (127,191)