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Operating Segments - Sales Information by Geographic Regions (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2018 | Apr. 30, 2017 | Apr. 30, 2018 | Apr. 30, 2017
Net external sales |  |  |  |
Net external sales | $ 553,706 | $ 496,137 | $ 1,104,130 | $ 903,607
United States [Member] |  |  |  |
Net external sales |  |  |  |
Net external sales | 178,821 | 156,095 | 344,652 | 281,616
Americas [Member] |  |  |  |
Net external sales |  |  |  |
Net external sales | 38,959 | 36,326 | 73,238 | 66,368
Europe [Member] |  |  |  |
Net external sales |  |  |  |
Net external sales | 154,736 | 128,468 | 296,674 | 247,627
Japan [Member] |  |  |  |
Net external sales |  |  |  |
Net external sales | 33,030 | 30,855 | 98,899 | 55,032
Asia Pacific [Member] |  |  |  |
Net external sales |  |  |  |
Net external sales | $ 148,160 | $ 144,393 | $ 290,667 | $ 252,964

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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