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Stock Plans - Compensation Expense and Related Income Tax Benefit for Share-Based Awards (Details) - USD ($) $ in Millions | 12 Months Ended
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Oct. 31, 2021 | Oct. 31, 2020 | Oct. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total compensation expense | $ 44.7 | $ 38.6 | $ 36.3
Related income tax benefit | 5.6 | 4.8 | 5.1
Selling, general and administrative expense |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total compensation expense | 38.4 | 32.2 | 28.7
Cost of sales |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total compensation expense | 3.9 | 4.0 | 4.7
Research and development expense |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total compensation expense | $ 2.4 | $ 2.4 | $ 2.9

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