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Earnings (Loss) per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2011
Earnings (loss) per common share: |
Basic and diluted earnings (loss) per common share | Basic and diluted earnings (loss) per common share for the years ended December 31, 2011, 2010 and 2009 were calculated as follows:
(in millions, except per share data) |  | 2011 |  |  | 2010 |  |  | 2009 |
Net earnings (loss) |  | $ | 71.9 |  |  | $ | (110.6 | ) |  | $ | (586.2 | )
Weighted average outstanding shares – basic |  |  | 89.3 |  |  |  | 88.7 |  |  |  | 88.4 |
Dilutive effect of common stock equivalents |  |  | 2.9 |  |  |  | - |  |  |  | - |
Weighted average outstanding shares – diluted |  |  | 92.2 |  |  |  | 88.7 |  |  |  | 88.4 |
Basic earnings (loss) per common share |  | $ | 0.81 |  |  | $ | (1.25 | ) |  | $ | (6.63 | )
Diluted earnings (loss) per common share |  | $ | 0.78 |  |  | $ | (1.25 | ) |  | $ | (6.63 | )

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