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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, 2016 | Oct. 31, 2015
Income Tax Disclosure [Abstract] |  |
Beginning balance | $ 132,054 | $ 124,102
Increases in unrecognized tax benefits related to prior year tax positions | 7,205 | 10,922
Decreases in unrecognized tax benefits related to prior year tax positions | (43,944) | (7,526)
Increases in unrecognized tax benefits related to current year tax positions | 13,880 | 13,232
Decreases in unrecognized tax benefits related to settlements with taxing authorities | (333) | 0
Reductions in unrecognized tax benefits due to lapse of applicable statute of limitations | (2,659) | (5,996)
Increases in unrecognized tax benefits acquired | 49 | 976
Changes in unrecognized tax benefits due to foreign currency translation | 290 | (3,656)
Ending Balance | $ 106,542 | $ 132,054

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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 + 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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=65882285&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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 + Details
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