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Net Income (Loss) Per Common Share (Tables) | 9 Months Ended
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Jul. 31, 2021
Earnings Per Share [Abstract] |
Schedule of Basic and Diluted Net Income (Loss) Per Common Share Calculations | 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.
Schedule of Anti-Dilutive Outstanding Stock Awards Issued Under Share-Based Compensation Plans | 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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- 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 http://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 http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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