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Net Earnings (Loss) Per Share (Tables) | 6 Months Ended
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Jun. 30, 2022
Earnings Per Share [Abstract] |
Calculations of Net Earnings (Loss) Per Share - Basic and Diluted | The calculations of net earnings per share - basic and net earnings per share - diluted were as follows:
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Net earnings available to common shareholders |  | $ | 122.2 |  |  | $ | 111.6 |  |  | $ | 213.8 |  |  | $ | 173.6 |
Weighted-average common shares outstanding (in millions) |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average common shares outstanding - basic |  |  | 52.7 |  |  |  | 54.5 |  |  |  | 53.2 |  |  |  | 54.8 |
Effect of dilutive securities - stock options |  |  | 0.1 |  |  |  | 0.2 |  |  |  | — |  |  |  | 0.1 |
Effect of other share-based awards |  |  | 0.6 |  |  |  | 0.7 |  |  |  | 0.6 |  |  |  | 0.6 |
Weighted-average common shares outstanding - diluted |  |  | 53.4 |  |  |  | 55.4 |  |  |  | 53.8 |  |  |  | 55.5 |
Net earnings per share - basic |  | $ | 2.32 |  |  | $ | 2.05 |  |  | $ | 4.02 |  |  | $ | 3.17 |
Net earnings per share - diluted |  | $ | 2.29 |  |  | $ | 2.02 |  |  | $ | 3.97 |  |  | $ | 3.13 |

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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 https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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