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Net Earnings (Loss) Per Common Share | 3 Months Ended
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Mar. 31, 2013
Earnings Per Share [Abstract] |
Net Earnings (Loss) Per Common Share | (17) Net Earnings (Loss) Per Common Share The following table shows the calculation of basic and diluted net earnings (loss) per common share under the two-class method.
|  | Three Months Ended |
|  | March 31, |
|  | 2013 |  |  | 2012 |
Basic Net Earnings (Loss) Per Common Share: |  |  |  |  |  |  |  |
Numerator |  |  |  |  |  |  |  |
Net earnings (loss) available to common stockholders |  | $ | 2.7 |  |  | $ | (6.0 | )
Distributed and allocated undistributed net earnings (loss) to non-vested restricted stockholders |  |  | (0.1 | ) |  |  | (0.1 | )
Distributed and allocated undistributed net earnings (loss) to common stockholders |  |  | 2.6 |  |  |  | (6.1 | )
Distributed net earnings (loss) — dividends paid to common stockholders |  |  | (25.3 | ) |  |  | (25.1 | )
Allocation of undistributed net earnings (loss) to common stockholders |  | $ | (22.7 | ) |  | $ | (31.2 | )
Denominator(1) |  |  |  |  |  |  |  |
Weighted average number of common shares outstanding — basic |  |  | 193.8 |  |  |  | 191.9 |
Basic net earnings (loss) per common share: |  |  |  |  |  |  |  |
Distributed net earnings (loss) to common stockholders |  | $ | 0.13 |  |  | $ | 0.13 |
Allocated undistributed net earnings (loss) to common stockholders |  |  | (0.12 | ) |  |  | (0.16 | )
Basic net (loss) earnings per common share: |  | $ | 0.01 |  |  | $ | (0.03 | )
Diluted Net Earnings (Loss) Per Common Share: |  |  |  |  |  |  |  |
Numerator |  |  |  |  |  |  |  |
Distributed and allocated undistributed net earnings (loss) to common stockholders |  | $ | 2.6 |  |  | $ | (6.1 | )
Add: Allocated undistributed net earnings (loss) to non-vested restricted stockholders |  |  | — |  |  |  | — |
Less: Undistributed net earnings (loss) reallocated to non-vested restricted stockholders |  |  | — |  |  |  | — |
Net earnings (loss) available to common stockholders — diluted |  | $ | 2.6 |  |  | $ | (6.1 | )
Denominator(1) |  |  |  |  |  |  |  |
Weighted average number of common shares outstanding — basic |  |  | 193.8 |  |  |  | 191.9 |
Effect of assumed issuance of Settlement agreement shares |  |  | 18.0 |  |  |  | — |
Effect of non-vested restricted stock units |  |  | 0.9 |  |  |  | — |
Weighted average number of common shares outstanding — diluted |  |  | 212.7 |  |  |  | 191.9 |
Diluted net earnings (loss) per common share |  | $ | 0.01 |  |  | $ | (0.03 | )
(1) | In calculating diluted net earnings (loss) per common share for 2012, our diluted weighted average number of common shares outstanding excludes the effect of assumed issuance of shares under the Settlement agreement and non-vested restricted stock units as the effect was anti-dilutive.
PSU Awards Since the PSU awards include contingently issuable shares that are based on a condition other than earnings or market price, they are included in the diluted weighted average number of common shares outstanding when we meet the performance conditions as of that date. However, in 2012, unvested PSU awards that met the performance conditions as of March 31, 2012 were not included in the diluted weighted average number of common shares outstanding for the three months ended March 31, 2012 as the effect was anti-dilutive. SLO Awards The shares or units associated with the 2013 SLO awards are considered contingently issuable shares and therefore are not included in the basic or diluted weighted average number of common shares outstanding for the three months ended March 31, 2013. These shares or units will not be included in the common shares outstanding until the final determination of the amount of annual incentive compensation is made in the first quarter of 2014. Once this determination is made, the shares or units will be included in both the basic and diluted weighted average number of common shares outstanding if the employee is retirement eligible or in the diluted weighted average number of common shares outstanding if the employee is not retirement eligible if the impact to diluted net earnings per common share is dilutive. The numbers of shares or units associated with SLO awards for the three months ended March 31, 2013 and 2012 were nominal and have not been included in the diluted weighted average number of common shares outstanding for the three months ended March 31, 2012 as the effect was anti-dilutive.

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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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