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Net Earnings Per Share | 9 Months Ended
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Sep. 30, 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 |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Net earnings available to common shareholders |  | $ | 30.3 |  |  | $ | 111.3 |  |  | $ | 173.3 |  |  | $ | 325.1 |
Weighted-average common shares outstanding (in millions) |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average common shares outstanding - basic |  |  | 49.5 |  |  |  | 51.7 |  |  |  | 50.1 |  |  |  | 52.6 |
Effect of dilutive securities - share-based awards |  |  | 0.6 |  |  |  | 0.6 |  |  |  | 0.6 |  |  |  | 0.7 |
Weighted-average common shares outstanding - diluted |  |  | 50.1 |  |  |  | 52.3 |  |  |  | 50.7 |  |  |  | 53.3 |
Net earnings per share - basic |  | $ | 0.61 |  |  | $ | 2.15 |  |  | $ | 3.46 |  |  | $ | 6.18 |
Net earnings per share - diluted |  | $ | 0.60 |  |  | $ | 2.13 |  |  | $ | 3.42 |  |  | $ | 6.10 |
There were 0.6 million and 0.7 million share-based awards excluded from the calculation of net earnings per share - diluted for the three months ended September 30, 2023 and 2022, respectively, because their impact was anti-dilutive. There were 0.6 million and 0.5 million share-based awards excluded from the calculation of net earnings per share - diluted for the nine months ended September 30, 2023 and 2022, respectively, because their impact was anti-dilutive.

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