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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2023
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table shows the calculation of basic and diluted earnings per share (in millions, except per share data).
| Three Months Ended |  | Nine Months Ended |  |
| September 30, |  | September 30, |  |
| 2023 |  | 2022 |  | 2023 |  | 2022 |  |  |  |
Income from continuing operations | $ | 59.4 |  |  | $ | 71.1 |  |  | $ | 169.0 |  |  | $ | 211.3 |  |  |  |  |
Loss from discontinued operations, net of income taxes | — |  |  | 2.1 |  |  | — |  |  | 1.2 |  |  |  |  |
Net income | $ | 59.4 |  |  | $ | 73.2 |  |  | $ | 169.0 |  |  | $ | 212.5 |  |  |  |  |
Weighted-average number of common shares outstanding — basic | 48.1 |  |  | 50.1 |  |  | 48.8 |  |  | 50.9 |  |  |  |  |
Dilutive effect of common share equivalents | 0.3 |  |  | 0.6 |  |  | 0.4 |  |  | 0.7 |  |  |  |  |
Weighted-average number of common shares and share equivalents outstanding — diluted | 48.4 |  |  | 50.7 |  |  | 49.2 |  |  | 51.6 |  |  |  |  |
Basic earnings per share: |  |  |  |  |  |  |  |  |  |  |
Continuing operations | $ | 1.23 |  |  | $ | 1.42 |  |  | $ | 3.46 |  |  | $ | 4.15 |  |  |  |  |
Discontinued operations | — |  |  | 0.04 |  |  | — |  |  | 0.02 |  |  |  |  |
| $ | 1.23 |  |  | $ | 1.46 |  |  | $ | 3.46 |  |  | $ | 4.17 |  |  |  |  |
Diluted earnings per share: |  |  |  |  |  |  |  |  |  |  |
Continuing operations | $ | 1.23 |  |  | $ | 1.40 |  |  | $ | 3.43 |  |  | $ | 4.09 |  |  |  |  |
Discontinued operations | — |  |  | 0.04 |  |  | — |  |  | 0.02 |  |  |  |  |
| $ | 1.23 |  |  | $ | 1.44 |  |  | $ | 3.43 |  |  | $ | 4.11 |  |  |  |  |

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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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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