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Financial Assets and Liabilities - Unaudited Condensed Consolidated Statement of Operations Location and Amount of Gains and Losses on Derivative Instrument Fair Values for Designated Hedge Instruments, Net of Tax (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2021 | Apr. 30, 2020 | Apr. 30, 2021 | Apr. 30, 2020
Financial Assets and Liabilities [Line Items] |  |  |  |
Amount of gain (loss) recognized in OCI on derivatives (effective portion) | $ 1,214 | $ (10,085) | $ 5,307 | $ (8,434)
Amount of gain (loss) reclassified from OCI (effective portion) | 4,623 | (331) | 7,350 | (854)
Foreign Exchange Contracts | Revenues |  |  |  |
Financial Assets and Liabilities [Line Items] |  |  |  |
Amount of gain (loss) recognized in OCI on derivatives (effective portion) | 1,804 | 1,130 | 1,641 | 2,210
Amount of gain (loss) reclassified from OCI (effective portion) | 921 | 272 | 1,034 | 182
Foreign Exchange Contracts | Operating expenses |  |  |  |
Financial Assets and Liabilities [Line Items] |  |  |  |
Amount of gain (loss) recognized in OCI on derivatives (effective portion) | (590) | (11,215) | 3,666 | (10,644)
Amount of gain (loss) reclassified from OCI (effective portion) | $ 3,702 | $ (603) | $ 6,316 | $ (1,036)

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- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624177-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
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- Definition Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121558989&loc=d3e80720-113993 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580 + Details
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