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Earnings (Loss) Per Share (Tables) | 12 Months Ended
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May 31, 2018
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:
| 2018 |  | 2017 |  | 2016
Earnings (loss) from continuing operations attributable to Class A and Common Shares | $ | (5.0 | ) |  | $ | 52.4 |  |  | $ | 43.9 |
Earnings (loss) from discontinued operations attributable to Class A and Common Shares, net of tax | — |  |  | (0.2 | ) |  | (3.5 | )
Net income (loss) attributable to Class A and Common Shares | (5.0 | ) |  | 52.2 |  |  | 40.4 |
Weighted average Shares of Class A Stock and Common Stock outstanding for basic earnings (loss) per share (in millions) | 35.0 |  |  | 34.7 |  |  | 34.1 |
Dilutive effect of Class A Stock and Common Stock potentially issuable pursuant to stock-based compensation plans (in millions) | — |  |  | 0.7 |  |  | 0.8 |
Adjusted weighted average Shares of Class A Stock and Common Stock outstanding for diluted earnings (loss) per share (in millions) | 35.0 |  |  | 35.4 |  |  | 34.9 |
Earnings (loss) per share of Class A Stock and Common Stock |  |  |  |  |
Basic earnings (loss) per share: |  |  |  |  |
Earnings (loss) from continuing operations | $ | (0.14 | ) |  | $ | 1.51 |  |  | $ | 1.29 |
Earnings (loss) from discontinued operations, net of tax | $ | — |  |  | $ | (0.00 | ) |  | $ | (0.11 | )
Net income (loss) | $ | (0.14 | ) |  | $ | 1.51 |  |  | $ | 1.18 |
Diluted earnings (loss) per share: |  |  |  |  |  |  |  |
Earnings (loss) from continuing operations | $ | (0.14 | ) |  | $ | 1.48 |  |  | $ | 1.26 |
Earnings (loss) from discontinued operations, net of tax | $ | — |  |  | $ | (0.01 | ) |  | $ | (0.10 | )
Net income (loss) | $ | (0.14 | ) |  | $ | 1.47 |  |  | $ | 1.16 |
Schedule of Options Outstanding | The following table sets forth Options outstanding pursuant to stock-based compensation plans for the fiscal years ended May 31:
| 2018 |  | 2017
Options outstanding pursuant to stock-based compensation plans (in millions) | 2.8 |  | 2.7

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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://fasb.org/us-gaap/role/ref/legacyRef -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 number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for outstanding options that are fully vested and expected to vest. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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