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Net Earnings (Loss) Per Share | 9 Months Ended
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Sep. 30, 2022
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 |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Net earnings available to common shareholders |  | $ | 111.3 |  |  | $ | 97.7 |  |  | $ | 325.1 |  |  | $ | 271.3 |
Weighted-average common shares outstanding (in millions) |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average common shares outstanding - basic |  |  | 51.7 |  |  |  | 54.3 |  |  |  | 52.6 |  |  |  | 54.7 |
Effect of dilutive securities - stock options |  |  | — |  |  |  | 0.2 |  |  |  | 0.1 |  |  |  | 0.1 |
Effect of other share-based awards |  |  | 0.6 |  |  |  | 0.7 |  |  |  | 0.6 |  |  |  | 0.6 |
Weighted-average common shares outstanding - diluted |  |  | 52.3 |  |  |  | 55.2 |  |  |  | 53.3 |  |  |  | 55.4 |
Net earnings per share - basic |  | $ | 2.15 |  |  | $ | 1.80 |  |  | $ | 6.18 |  |  | $ | 4.96 |
Net earnings per share - diluted |  | $ | 2.13 |  |  | $ | 1.77 |  |  | $ | 6.10 |  |  | $ | 4.90 |
There were 0.7 million and 0.1 million share-based awards excluded from the calculation of net earnings per share - diluted for the three months ended September 30, 2022 and 2021, respectively, because their impact was anti-dilutive. There were 0.5 million and 0.2 million share-based awards excluded from the calculation of net earnings per share - diluted for the nine months ended September 30, 2022 and 2021, 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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