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Net Earnings Per Share | 6 Months Ended
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Jun. 30, 2019
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:
|  | 3 Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Net earnings available to common shareholders |  | $ | 127.3 |  |  | $ | 143.4 |  |  | $ | 180.8 |  |  | $ | 240.4 |
Weighted-average common shares outstanding (in millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average common shares outstanding - basic |  |  | 60.0 |  |  |  | 65.7 |  |  |  | 60.3 |  |  |  | 65.8 |
Effect of dilutive securities - stock options |  |  | 0.1 |  |  |  | 0.1 |  |  |  | 0.1 |  |  |  | 0.2 |
Effect of other share-based awards |  |  | 0.3 |  |  |  | 0.3 |  |  |  | 0.3 |  |  |  | 0.4 |
Weighted-average common shares outstanding - diluted |  |  | 60.4 |  |  |  | 66.1 |  |  |  | 60.7 |  |  |  | 66.4 |
Net earnings per share - basic |  | $ | 2.12 |  |  | $ | 2.18 |  |  | $ | 3.00 |  |  | $ | 3.65 |
Net earnings per share - diluted |  | $ | 2.11 |  |  | $ | 2.17 |  |  | $ | 2.98 |  |  | $ | 3.62 |
There were 0.4 million and 0.3 million share-based awards excluded from the calculation of net earnings per share – diluted for the three months ended June 30, 2019 and 2018, respectively, and the calculations of earnings per share – diluted for the six months ended June 30, 2019 and June 30, 2018 because their impact was anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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