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Earnings Per Share (Notes) | 6 Months Ended
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Jun. 30, 2016
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] | Earnings Per Share Basic earnings per share represents income available to common stockholders divided by the weighted average number of common shares outstanding during the reported period. Diluted earnings per share reflects the effect of the increase in shares outstanding determined by using the treasury stock method for awards issued under our long-term incentive stock plans. For the three and six months ended June 30, 2016, there were less than 0.1 million anti-dilutive stock-based awards outstanding. In addition, there were 6.5 million contingently issuable stock-based awards outstanding that were excluded from the diluted earnings per share calculation because the contingencies had not been met. As of June 30, 2015, there were 3.9 million anti-dilutive stock-based awards outstanding. These awards were anti-dilutive because we reported a net loss in each period. In addition, there were 6.5 million contingently issuable market-based stock awards outstanding that were excluded from the diluted earnings per share calculation because the contingencies had not been met. Basic and diluted weighted average shares outstanding and earnings per share were as follows:
(in millions, except per share data) |  | Three Months Ended June 30, 2016 |  | Three Months Ended June 30, 2015 |  | Six Months Ended June 30, 2016 |  | Six Months Ended June 30, 2015
Earnings per share - basic |  |  |  |  |  |  |  |
Earnings available to common shareholders |  | $ | 17.3 |  |  | $ | (2.6 | ) |  | $ | 29.9 |  |  | $ | (9.2 | )
Weighted average basic shares outstanding |  | 182.5 |  |  | 148.5 |  |  | 182.4 |  |  | 148.2 |
Earnings per share - basic |  | $ | 0.09 |  |  | $ | (0.02 | ) |  | $ | 0.16 |  |  | $ | (0.06 | )
Earnings per share - diluted |  |  |  |  |  |  |  |
Earnings available to common shareholders |  | $ | 17.3 |  |  | $ | (2.6 | ) |  | $ | 29.9 |  |  | $ | (9.2 | )
Weighted average basic shares outstanding |  | 182.5 |  |  | 148.5 |  |  | 182.4 |  |  | 148.2 |
Dilutive impact of stock based awards |  | 1.9 |  |  | — |  |  | 1.8 |  |  | — |
Weighted average dilutive shares outstanding |  | 184.4 |  |  | 148.5 |  |  | 184.2 |  |  | 148.2 |
Earnings per share - diluted |  | $ | 0.09 |  |  | $ | (0.02 | ) |  | $ | 0.16 |  |  | $ | (0.06 | )

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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 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 2: 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 3: 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 4: 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=32703322&loc=d3e4984-109258 Reference 5: 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=26872669&loc=d3e20235-122688 + Details
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