Unaudited Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
Net income	$ 68,691	$ 20,971	$ 138,613	$ 77,665
Other comprehensive income (loss):
Change in foreign currency translation adjustment	(7,670)	(5,010)	(14,512)	(7,059)
Cash flow hedges:
Deferred gains (losses), net of tax of $2,188 and $2,532, for the three and six months ended April 30, 2013, respectively, and of ($549) and $381 for each of the same periods in fiscal 2012, respectively	(2,128)	4,586	3,696	(120)
Reclassification adjustment on deferred (gains) losses included in net income, net of tax of $(144) and $(199), for the three and six months ended April 30, 2013, respectively, and of $(605) and $(1,593) for each of the same periods in fiscal 2012, respectively	(2,010)	2,117	(1,730)	5,570
Change in unrealized (losses) gains on investments, net of tax of $117 and $58, for the three and six months ended April 30, 2012.		(179)		(88)
Other comprehensive income (loss), net of tax effects	(11,808)	1,514	(12,546)	(1,697)
Comprehensive income	$ 56,883	$ 22,485	$ 126,067	$ 75,968