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Net Income Per Common Share Computations (Tables) | 6 Months Ended
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Jun. 30, 2022
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following is a reconciliation of the numerator and denominator of the net income per common share computations:
| Three Months Ended June 30, |  | Six Months Ended June 30,
(in millions, except per share data) | 2022 |  | 2021 |  | 2022 |  | 2021
Numerator for basic and diluted net income per common share: |  |  |  |  |  |  |
Net income | $ | 339.3 |  |  | $ | 108.3 |  |  | $ | 381.4 |  |  | $ | 144.4 |
Denominator for net income per common share: |  |  |  |  |  |  |
Basic | 38.1 |  |  | 38.7 |  |  | 38.2 |  |  | 38.8 |
Plus dilutive effect of stock awards | 0.5 |  |  | 0.6 |  |  | 0.5 |  |  | 0.6 |
Diluted | 38.6 |  |  | 39.3 |  |  | 38.7 |  |  | 39.4 |
Net income per common share data: |  |  |  |  |  |  |
Basic net income | $ | 8.91 |  |  | $ | 2.80 |  |  | $ | 9.98 |  |  | $ | 3.72 |
Diluted net income | $ | 8.79 |  |  | $ | 2.76 |  |  | $ | 9.85 |  |  | $ | 3.66 |

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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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