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Net Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2013
Net Earnings Per Share [Abstract] |
Net Earnings Per Share | The calculations of net earnings per share – basic and net earnings per share – diluted were as follows:
|  | 3 Months Ended |  |  | 9 Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
Net earnings per share – basic: |  |  |  |  |  |  |  |  |  |  |  |
Net earnings available to common shareholders |  | $ | 94.7 |  |  | $ | 63.1 |  |  | $ | 186.8 |  |  | $ | 144.3 |
Weighted-average common shares outstanding |  |  | 78.4 |  |  |  | 79.5 |  |  |  | 77.6 |  |  |  | 79.9 |
|  | $ | 1.21 |  |  | $ | 0.79 |  |  | $ | 2.41 |  |  | $ | 1.81 |
Net earnings per share – diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings available to common shareholders |  | $ | 94.7 |  |  | $ | 63.1 |  |  | $ | 186.8 |  |  | $ | 144.3 |
Weighted-average common shares outstanding |  |  | 78.4 |  |  |  | 79.5 |  |  |  | 77.6 |  |  |  | 79.9 |
Effect of dilutive securities – stock options |  |  | 0.8 |  |  |  | 0.3 |  |  |  | 0.8 |  |  |  | 0.3 |
Effect of other share-based awards |  |  | 0.8 |  |  |  | 0.2 |  |  |  | 0.8 |  |  |  | 0.4 |
|  |  | 80.0 |  |  |  | 80.0 |  |  |  | 79.2 |  |  |  | 80.6 |
|  | $ | 1.18 |  |  | $ | 0.79 |  |  | $ | 2.36 |  |  | $ | 1.79 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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