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Accumulated Other Comprehensive Income (Loss) (Tables) | 9 Months Ended
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Jul. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Components of Accumulated Other Comprehensive Income (Loss) | Components of accumulated other comprehensive income (loss), on an after-tax basis where applicable, were as follows:
| July 31, 2018 |  | October 31, 2017
| (in thousands)
Cumulative currency translation adjustments | $ | (78,680 | ) |  | $ | (70,407 | )
Unrealized gain (loss) on derivative instruments, net of taxes | (15,973 | ) |  | 4,428 |
Total accumulated other comprehensive income (loss) | $ | (94,653 | ) |  | $ | (65,979 | )
Effect of Amounts Reclassified out of Each Component of Accumulated Other Comprehensive Income (Loss) into Net Income | The effect of amounts reclassified out of each component of accumulated other comprehensive income (loss) into net income was as follows:
| Three Months Ended July 31, |  | Nine Months Ended July 31,
| 2018 |  | 2017 |  | 2018 |  | 2017
| (in thousands)
Reclassifications from accumulated other comprehensive income (loss) into unaudited condensed consolidated statement of operations: |  |  |  |  |  |  |
Gain (loss) on cash flow hedges, net of taxes |  |  |  |  |  |  |
Revenues | $ | (308 | ) |  | $ | (198 | ) |  | $ | 1,190 |  |  | $ | (2,379 | )
Operating expenses | 1,970 |  |  | 176 |  |  | 11,320 |  |  | (3,236 | )
Gain (loss) on available-for-sale securities |  |  |  |  |  |  |
Other income (expense) | — |  |  | — |  |  | — |  |  | 1 |
Total reclassifications into net income | $ | 1,662 |  |  | $ | (22 | ) |  | $ | 12,510 |  |  | $ | (5,614 | )

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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