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Net Earnings (Loss) Per Share | 3 Months Ended
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Mar. 31, 2023
Earnings Per Share [Abstract] |
Net Earnings Per Share | (8) Net Earnings Per Share The calculations of net earnings per share - basic and net earnings per share - diluted were as follows:
|  | Three Months Ended |
|  | March 31, |
|  | 2023 |  |  | 2022 |
Net earnings available to common shareholders |  | $ | 77.8 |  |  | $ | 91.6 |
Weighted-average common shares outstanding (in millions) |  |  |  |  |  |
Weighted-average common shares outstanding - basic |  |  | 50.9 |  |  |  | 53.6 |
Effect of dilutive securities - stock options |  |  | 0.1 |  |  |  | 0.1 |
Effect of other share-based awards |  |  | 0.6 |  |  |  | 0.7 |
Weighted-average common shares outstanding - diluted |  |  | 51.6 |  |  |  | 54.4 |
Net earnings per share - basic |  | $ | 1.53 |  |  | $ | 1.71 |
Net earnings per share - diluted |  | $ | 1.51 |  |  | $ | 1.68 |
There were 0.5 million and 0.2 million share-based awards excluded from the calculation of net earnings per share - diluted for the three months ended March 31, 2023 and 2022, respectively, because their impact was anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI https://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3630-109257 + Details
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