Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2013	Jul. 31, 2012
Net income	$ 46,595	$ 61,643	$ 75,701	$ 75,729
Other comprehensive income (loss), net of tax:
Change in pension liability	(37)	201	(55)	293
Change in fair value of available-for-sale securities	(70)	258	(107)	414
Unrealized income (loss) on derivative held by equity investee	338	(214)	351	(942)
Other Comprehensive Income (Loss), Net of Tax	231	245	189	(235)
Comprehensive Income, Net of Tax, Attributable to Parent	$ 46,826	$ 61,888	$ 75,890	$ 75,494