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Earnings Per Share (Tables) | 9 Months Ended
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Jul. 31, 2022
Earnings Per Share [Abstract] |
Schedule of earnings per share |
Periods Ended July 31, | Three Months |  | Nine Months
(In millions, except per share amounts) | 2022 |  | 2021 |  | 2022 |  | 2021
Net income | $ | 98.4 |  |  | $ | 615.8 |  |  | $ | 320.2 |  |  | $ | 2,834.4 |
Basic: |  |  |  |  |  |  |
Weighted average common shares | 49.3 |  |  | 49.3 |  |  | 49.3 |  |  | 49.2 |
Basic earnings per share | $ | 1.99 |  |  | $ | 12.50 |  |  | $ | 6.49 |  |  | $ | 57.61 |
Diluted: |  |  |  |  |  |  |
Weighted average common shares | 49.3 |  |  | 49.3 |  |  | 49.3 |  |  | 49.2 |
Effect of dilutive stock plans | 0.3 |  |  | 0.5 |  |  | 0.4 |  |  | 0.5 |
Diluted weighted average common shares | 49.6 |  |  | 49.8 |  |  | 49.7 |  |  | 49.7 |
Diluted earnings per share | $ | 1.98 |  |  | $ | 12.37 |  |  | $ | 6.44 |  |  | $ | 57.01 |
Schedule of stock options and restricted stock units that were not included in the diluted earnings per share calculation | The following table sets forth stock options to purchase our common stock that were not included in the diluted earnings per share calculation because their effect would have been antidilutive for the periods presented:
Periods Ended July 31, | Three Months |  | Nine Months
(In thousands, except exercise prices) | 2022 |  | 2021 |  | 2022 |  | 2021
Stock option shares excluded | 425 |  |  | 107 |  |  | 224 |  |  | 107 |
Range of exercise prices | $304.54 - $406.17 |  | $ | 345.74 |  |  | $304.54 - $406.17 |  | $ | 345.74 |
Restricted stock units excluded | 121 |  |  | 5 |  |  | 8 |  |  | 6 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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