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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2025
Earnings Per Share [Abstract] |
Schedule of Reconciliation of Basic and Diluted Earnings Per Share Computations | The following tables provide a reconciliation of basic and diluted earnings per share computations for the three months ended March 31, 2025 and 2024:
|  | Three Months Ended March 31, |  |
(Millions of dollars, except share and per share amounts) |  | 2025 |  | 2024 |  |  |  |
Earnings per common share: |  |  |  |  |  |  |  |
Net income per share - basic |  |  |  |  |  |  |  |
Net income attributable to common stockholders |  | $ | 53.2 |  |  | $ | 66.0 |  |  |  |  |
Weighted average common shares outstanding (in thousands) |  | 19,929 |  |  | 20,814 |  |  |  |  |
Earnings per common share |  | $ | 2.67 |  |  | $ | 3.17 |  |  |  |  |
|  | Three Months Ended March 31, |  |
(Millions of dollars, except share and per share amounts) |  | 2025 |  | 2024 |  |  |  |
Earnings per common share - assuming dilution: |  |  |  |  |  |  |  |
Net income per share - diluted |  |  |  |  |  |  |  |
Net income attributable to common stockholders |  | $ | 53.2 |  |  | $ | 66.0 |  |  |  |  |
Weighted average common shares outstanding (in thousands) |  | 19,929 |  |  | 20,814 |  |  |  |  |
Common equivalent shares: |  |  |  |  |  |  |  |
Dilutive share-based awards |  | 275 |  |  | 348 |  |  |  |  |
Weighted average common shares outstanding - assuming dilution (in thousands) |  | 20,204 |  |  | 21,162 |  |  |  |  |
Earnings per common share assuming dilution |  | $ | 2.63 |  |  | $ | 3.12 |  |  |  |  |
Schedule of Potentially Dilutive Shares Excluded from Earnings Per Share | We have excluded from the earnings-per-share calculation certain stock options and shares that are considered to be anti-dilutive under the treasury stock method and are reported in the table below.
|  | Three Months Ended March 31, |  |
Potentially dilutive shares excluded from the calculation as their inclusion would be anti-dilutive |  | 2025 |  | 2024 |  |  |  |
Stock Options |  | 47,623 |  |  | 16,597 |  |  |  |  |
RSUs |  | 4,912 |  |  | 151 |  |  |  |  |
PSUs |  | 9,824 |  |  | 5,689 |  |  |  |  |
Total anti-dilutive shares |  | 62,359 |  |  | 22,437 |  |  |  |  |

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