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Accumulated Other Comprehensive Income (Loss) - Effect of Amounts Reclassified out of Each Component of Accumulated Other Comprehensive Income (Loss) into Net Income (Detail) - Reclassification out of accumulated other comprehensive income (loss) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Jul. 31, 2016 | Jul. 31, 2015 | Jul. 31, 2016 | Jul. 31, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Reclassifications into net income | $ (5,169) | $ (2,385) | $ (14,072) | $ (9,795)
Revenues | Gain (loss) on cash flow hedges, net of taxes |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Reclassifications into net income |  | 4,005 |  | 6,411
Operating expenses | Gain (loss) on cash flow hedges, net of taxes |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Reclassifications into net income |  | (6,395) |  | (16,228)
Other income (expense) | Gain (loss) on available-for-sale securities |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Reclassifications into net income | $ 5 | $ 5 | $ 15 | $ 22

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