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Net Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2011
Net Earnings Per Share [Abstract] |
Net Earnings Per Share | The calculation of Net Earnings Per Share – Basic and Net Earnings Per Share – Diluted was as follows:
|  | 3 Months Ended |  |  | 9 Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2011 |  |  | 2010 |  |  | 2011 |  |  | 2010 |
Net Earnings Per Share – Basic: |  |  |  |  |  |  |  |  |  |  |  |
Net earnings available to common shareholders |  | $ | 79.6 |  |  | $ | 51.3 |  |  | $ | 188.0 |  |  | $ | 86.8 |
Weighted-average common shares outstanding |  |  | 81.7 |  |  |  | 81.9 |  |  |  | 81.9 |  |  |  | 80.7 |
|  | $ | 0.97 |  |  | $ | 0.63 |  |  | $ | 2.30 |  |  | $ | 1.08 |
Net Earnings Per Share – Diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings available to common shareholders |  | $ | 79.6 |  |  | $ | 51.3 |  |  | $ | 188.0 |  |  | $ | 86.8 |
Weighted-average common shares outstanding |  |  | 81.7 |  |  |  | 81.9 |  |  |  | 81.9 |  |  |  | 80.7 |
Effect of dilutive securities – stock options |  |  | 0.4 |  |  |  | 0.6 |  |  |  | 0.9 |  |  |  | 0.8 |
Effect of other stock-based awards |  |  | 0.3 |  |  |  | 0.2 |  |  |  | 0.5 |  |  |  | 0.2 |
|  |  | 82.4 |  |  |  | 82.7 |  |  |  | 83.3 |  |  |  | 81.7 |
|  | $ | 0.97 |  |  | $ | 0.62 |  |  | $ | 2.26 |  |  | $ | 1.06 |
There were 3.9 million and 3.2 million stock-based awards excluded from the calculation of Net Earnings Per Share – Diluted for the three months ended September 30, 2011 and 2010, respectively, and 2.5 million and 3.2 million stock-based awards excluded from the calculation of Net Earnings Per Share – Diluted for the nine months ended September 30, 2011 and 2010, respectively, as the exercise price for these awards was greater than the average market price of the common shares during the period.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + Details
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