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Net Income (Loss) Per Common Share | 9 Months Ended
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Jul. 31, 2021
Earnings Per Share [Abstract] |
Net Income (Loss) Per Common Share | NET INCOME (LOSS) PER COMMON SHARE Basic and Diluted Net Income (Loss) Per Common Share Calculations
| Three Months Ended July 31, |  | Nine Months Ended July 31,
(in millions, except per share amounts) | 2021 |  | 2020 |  | 2021 |  | 2020
(Loss) income from continuing operations | $ | (13.7) |  |  | $ | 56.0 |  |  | $ | 92.0 |  |  | $ | (52.9) |
Income from discontinued operations, net of taxes | — |  |  | — |  |  | — |  |  | 0.1 |
Net (loss) income | $ | (13.7) |  |  | $ | 56.0 |  |  | $ | 92.0 |  |  | $ | (52.8) |
Weighted-average common and common equivalent shares outstanding — Basic | 67.5 |  |  | 66.9 |  |  | 67.3 |  |  | 66.9 |
Effect of dilutive securities(1) |  |  |  |  |  |  |
Restricted stock units | — |  |  | 0.1 |  |  | 0.4 |  |  | — |
Stock options | — |  |  | 0.1 |  |  | — |  |  | — |
Performance shares | — |  |  | 0.1 |  |  | 0.1 |  |  | — |
Weighted-average common and common equivalent shares outstanding — Diluted | 67.5 |  |  | 67.2 |  |  | 67.8 |  |  | 66.9 |
Net (loss) income per common share — Basic |  |  |  |  |  |  |
(Loss) income from continuing operations | $ | (0.20) |  |  | $ | 0.84 |  |  | $ | 1.37 |  |  | $ | (0.79) |
Income from discontinued operations | — |  |  | — |  |  | — |  |  | — |
Net (loss) income | $ | (0.20) |  |  | $ | 0.84 |  |  | $ | 1.37 |  |  | $ | (0.79) |
Net (loss) income per common share — Diluted |  |  |  |  |  |  |
(Loss) income from continuing operations | $ | (0.20) |  |  | $ | 0.83 |  |  | $ | 1.36 |  |  | $ | (0.79) |
Income from discontinued operations | — |  |  | — |  |  | — |  |  | — |
Net (loss) income | $ | (0.20) |  |  | $ | 0.83 |  |  | $ | 1.36 |  |  | $ | (0.79) |
(1) Excludes the impact of potentially dilutive outstanding share-based securities that are excluded from the calculation of diluted loss per share in periods when we have a loss, as their inclusion would have an anti-dilutive effect. Such impact is included in the table below. Anti-Dilutive Outstanding Stock Awards Issued Under Share-Based Compensation Plans
| Three Months Ended July 31, |  | Nine Months Ended July 31,
(in millions) | 2021 |  | 2020 |  | 2021 |  | 2020
Anti-dilutive | — |  |  | 0.4 |  |  | — |  |  | 0.6 |

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