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Net Earnings (Loss) Per Share | 12 Months Ended
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Dec. 31, 2012
Net Earnings (Loss) Per Share [Abstract] |
Net Earnings (Loss) Per Share | 04. Net Earnings (Loss) Per Share The calculation of net earnings (loss) per share — basic was as follows:
Year Ended December 31 |  | 2012 |  | 2011 |  | 2010 |
Net earnings (loss) available to common shareholders |  | $ | 197.6 |  | $ | 251.6 |  | $ | (263.6 | )
Weighted-average common shares outstanding (in millions) |  |  | 79.5 |  |  | 81.6 |  |  | 81.0 |
Total |  | $ | 2.49 |  | $ | 3.08 |  | $ | (3.26 | )
The calculation of net earnings (loss) per share — diluted was as follows:
Year Ended December 31 |  | 2012 |  | 2011 |  | 2010 |
Net earnings (loss) available to common shareholders |  | $ | 197.6 |  | $ | 251.6 |  | $ | (263.6 | )
Weighted-average common shares outstanding (in millions) |  |  | 79.5 |  |  | 81.6 |  |  | 81.0 |
Effect of dilutive securities — stock options (in millions) |  |  | 0.3 |  |  | 0.7 |  |  | — |
Effect of other share-based awards (in millions) |  |  | 0.3 |  |  | 0.5 |  |  | — |
|  |  | 80.1 |  |  | 82.8 |  |  | 81.0 |
Total |  | $ | 2.47 |  | $ | 3.04 |  | $ | (3.26 | )
There were 4.3 million and 3.1 million share-based awards excluded from the calculation of net earnings per share — diluted for the year ended December 31, 2012 and 2011, respectively, as the exercise prices for these awards were greater than the average market price of the common shares during the period. Due to the net loss for the year ended December 31, 2010, the assumed exercise of share-based awards had an antidilutive effect and therefore was not included in the calculation of net loss per share — diluted. The number, exercise prices and weighted-average remaining life of these antidilutive awards were as follows:
|  |  | 2012 |  |  | 2011 |  |  | 2010 |
Shares (in thousands) |  |  | 4,257 |  |  | 3,074 |  |  | 6,583 |
Exercise price ranges |  |  | $40–$93 |  |  | $52–$93 |  |  | $11–$93 |
Weighted-average remaining life |  |  | 4.8 years |  |  | 6.3 years |  |  | 5.8 years |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=16381557&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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