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Earnings per Common Share (Tables) | 9 Months Ended
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Mar. 31, 2016
Earnings Per Share [Abstract] |
Schedule of calculations of basic and diluted earnings per common share | The calculations of basic and diluted earnings per common share for the three and nine months ended March 31, 2016 and 2015 were as follows:
|  | Three Months Ended March 31, |  | Nine Months Ended March 31,
(in millions, except per share data) |  | 2016 |  | 2015 |  | 2016 |  | 2015
Net (loss) income |  | $ | (23.9 | ) |  | $ | (1.4 | ) |  | $ | (3.6 | ) |  | $ | 36.2 |
Less: earnings and dividends allocated to participating securities |  | — |  |  | — |  |  | — |  |  | — |
(Loss) earnings available for common stockholders used in calculation of basic earnings per common share |  | $ | (23.9 | ) |  | $ | (1.4 | ) |  | $ | (3.6 | ) |  | $ | 36.2 |
Weighted average number of common shares outstanding, basic |  | 47.1 |  |  | 52.6 |  |  | 48.5 |  |  | 53.2 |
Basic (loss) earnings per common share |  | $ | (0.51 | ) |  | $ | (0.03 | ) |  | $ | (0.08 | ) |  | $ | 0.68 |
Net (loss) income |  | $ | (23.9 | ) |  | $ | (1.4 | ) |  | $ | (3.6 | ) |  | $ | 36.2 |
Less: earnings and dividends allocated to participating securities |  | — |  |  | — |  |  | — |  |  | — |
(Loss) earnings available for common stockholders used in calculation of diluted earnings per common share |  | $ | (23.9 | ) |  | $ | (1.4 | ) |  | $ | (3.6 | ) |  | $ | 36.2 |
Weighted average number of common shares outstanding, basic |  | 47.1 |  |  | 52.6 |  |  | 48.5 |  |  | 53.2 |
Effect of shares issuable under share-based compensation plans |  | — |  |  | — |  |  | — |  |  | 0.1 |
Weighted average number of common shares outstanding, diluted |  | 47.1 |  |  | 52.6 |  |  | 48.5 |  |  | 53.3 |
Diluted (loss) earnings per common share |  | $ | (0.51 | ) |  | $ | (0.03 | ) |  | $ | (0.08 | ) |  | $ | 0.68 |
Schedule of awards issued under share-based compensation plans excluded from the calculations of diluted earnings per share | The following awards issued under share-based compensation plans were excluded from the above calculations of diluted earnings per share because their effects were anti-dilutive:
|  | Three Months Ended March 31, |  | Nine Months Ended March 31,
(in millions) |  | 2016 |  | 2015 |  | 2016 |  | 2015
Stock options |  | 1.6 |  |  | 1.1 |  |  | 1.6 |  |  | 0.7 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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