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Earnings Per Share | 9 Months Ended
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Jul. 31, 2021
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share
Periods Ended July 31, | Three Months |  | Nine Months
(In millions, except per share amounts) | 2021 |  | 2020 |  | 2021 |  | 2020
Net income | $ | 615.8 |  |  | $ | 55.2 |  |  | $ | 2,834.4 |  |  | $ | 157.2 |
Basic: |  |  |  |  |  |  |
Weighted average common shares | 49.3 |  |  | 49.1 |  |  | 49.2 |  |  | 49.1 |
Basic earnings per share | $ | 12.50 |  |  | $ | 1.13 |  |  | $ | 57.61 |  |  | $ | 3.20 |
Diluted: |  |  |  |  |  |  |
Weighted average common shares | 49.3 |  |  | 49.1 |  |  | 49.2 |  |  | 49.1 |
Effect of dilutive stock plans | 0.5 |  |  | 0.4 |  |  | 0.5 |  |  | 0.5 |
Diluted weighted average common shares | 49.8 |  |  | 49.5 |  |  | 49.7 |  |  | 49.6 |
Diluted earnings per share | $ | 12.37 |  |  | $ | 1.12 |  |  | $ | 57.01 |  |  | $ | 3.17 |
The following table sets forth stock options to purchase our common stock and restricted stock units 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) | 2021 |  | 2020 |  | 2021 |  | 2020
Stock option shares excluded | 107 |  |  | 392 |  |  | 107 |  |  | 207 |
Range of exercise prices | $ | 345.74 |  |  | $254.77 – $304.54 |  | $ | 345.74 |  |  | $ | 304.54 |
Restricted stock units excluded | 5 |  |  | 1 |  |  | 6 |  |  | 1 |

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