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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2025
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Earnings per Share |
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
(in millions, except per share data) | 2025 |  | 2024 |  | 2025 |  | 2024
Net income attributable to common shareholders | $ | 50.5 |  |  | $ | 47.1 |  |  | $ | 97.1 |  |  | $ | 126.5 |
Average basic shares outstanding | 57.4 |  |  | 57.2 |  |  | 57.4 |  | 57.1 |
Effect of dilutive share-based awards | 0.6 |  |  | 0.6 |  |  | 0.6 |  |  | 0.7 |
Average diluted shares outstanding | 58.0 |  |  | 57.8 |  |  | 58.0 |  |  | 57.8 |
Earnings per basic share | $ | 0.88 |  |  | $ | 0.82 |  |  | $ | 1.69 |  |  | $ | 2.21 |
Earnings per diluted share | $ | 0.87 |  |  | $ | 0.81 |  |  | $ | 1.68 |  |  | $ | 2.19 |

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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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