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Earnings (Loss) Per Share (Tables) | 12 Months Ended
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May 31, 2017
Earnings Per Share [Abstract] |
Schedule of basic and diluted earnings per share | The following table summarizes the reconciliation of the numerators and denominators for the Basic and Diluted earnings (loss) per share computation for the fiscal years ended May 31:
| 2017 |  | 2016 |  | 2015
Earnings (loss) from continuing operations attributable to Class A and Common Shares | $ | 52.4 |  |  | $ | 43.9 |  |  | $ | 15.4 |
Earnings (loss) from discontinued operations attributable to Class A and Common Shares, net of tax | (0.2 | ) |  | (3.5 | ) |  | 279.1 |
Net income (loss) attributable to Class A and Common Shares | 52.2 |  |  | 40.4 |  |  | 294.5 |
Weighted average Shares of Class A Stock and Common Stock outstanding for basic earnings (loss) per share (in millions) | 34.7 |  |  | 34.1 |  |  | 32.7 |
Dilutive effect of Class A Stock and Common Stock potentially issuable pursuant to stock-based compensation plans (in millions) | 0.7 |  |  | 0.8 |  |  | 0.7 |
Adjusted weighted average Shares of Class A Stock and Common Stock outstanding for diluted earnings (loss) per share (in millions) | 35.4 |  |  | 34.9 |  |  | 33.4 |
Earnings (loss) per share of Class A Stock and Common Stock |  |  |  |  |
Basic earnings (loss) per share: |  |  |  |  |
Earnings (loss) from continuing operations | $ | 1.51 |  |  | $ | 1.29 |  |  | $ | 0.47 |
Earnings (loss) from discontinued operations, net of tax | $ | (0.00 | ) |  | $ | (0.11 | ) |  | $ | 8.53 |
Net income (loss) | $ | 1.51 |  |  | $ | 1.18 |  |  | $ | 9.00 |
Diluted earnings (loss) per share: |  |  |  |  |  |  |  |
Earnings (loss) from continuing operations | $ | 1.48 |  |  | $ | 1.26 |  |  | $ | 0.46 |
Earnings (loss) from discontinued operations, net of tax | $ | (0.01 | ) |  | $ | (0.10 | ) |  | $ | 8.34 |
Net income (loss) | $ | 1.47 |  |  | $ | 1.16 |  |  | $ | 8.80 |
Schedule of Options Outstanding | The following table sets forth Options outstanding pursuant to stock-based compensation plans for the fiscal years ended May 31:
| 2017 |  | 2016
Options outstanding pursuant to stock-based compensation plans (in millions) | 2.7 |  | 3.0

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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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- Definition Tabular disclosure of the following for fully vested share options (or share units) and share options expected to vest at the date of the latest statement of financial position: the number, weighted-average exercise price (or conversion ratio), aggregate intrinsic value (except for nonpublic entities), and weighted-average remaining contractual term of options (or share units) outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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