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Income Taxes - Summary of Reconciliation of Beginning and Ending Balance of Gross Unrecognized Tax Benefit (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Oct. 31, 2020 | Oct. 31, 2019
Reconciliation of Unrecognized Tax Benefits [Roll Forward] |  |
Beginning balance | $ 116,212 | $ 131,019
Increases in unrecognized tax benefits related to prior year tax positions | 5,390 | 41,346
Decreases in unrecognized tax benefits related to prior year tax positions | (43,783) | (71,092)
Increases in unrecognized tax benefits related to current year tax positions | 9,226 | 16,927
Decreases in unrecognized tax benefits related to settlements with taxing authorities | (1,411) | (1,624)
Reductions in unrecognized tax benefits due to lapse of applicable statute of limitations | (2,472) | (964)
Increases in unrecognized tax benefits acquired | 778 | 0
Changes in unrecognized tax benefits due to foreign currency translation | (791) | 600
Ending Balance | $ 83,149 | $ 116,212

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- Definition Unrecognized tax benefits, period increase decrease, due to foreign currency translation + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=120406818&loc=SL37586934-109318 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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