Accumulated Other Comprehensive Income (Loss) - Effect of Amounts Reclassified out of Each Component of Accumulated Other Comprehensive Income (Loss) into Net Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2015	Jan. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	$ 542,043	$ 478,951
Other income (expense), net	5,116	11,028
Net income	65,189	67,696
Reclassification out of accumulated other comprehensive income (loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	(1,043)	3,306
Gain (loss) on cash flow hedges, net of taxes | Reclassification out of accumulated other comprehensive income (loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	2,381	2,756
Operating expenses	(3,436)	550
Gain (loss) on available-for-sale securities | Reclassification out of accumulated other comprehensive income (loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	$ 12	$ 0