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Earnings (Loss) Per Share | 12 Months Ended
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May 31, 2017
Earnings Per Share [Abstract] |
Earnings (Loss) Per Share | EARNINGS (LOSS) 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 |
Earnings from continuing operations exclude earnings of $0.1, $0.1 and $0.1 for the fiscal years ended May 31, 2017, 2016 and 2015, respectively, for earnings attributable to participating RSUs. In a period in which the Company reports a discontinued operation, Earnings (loss) from continuing operations is used as the “control number” in determining whether potentially dilutive common shares are dilutive or anti-dilutive. There were 0.4 million potentially anti-dilutive shares outstanding pursuant to compensation plans as of May 31, 2017. A portion of the Company’s Restricted Stock Units ("RSUs") which are granted to employees participate in earnings through cumulative dividends which are payable and non-forfeitable to the employees upon vesting of the RSUs. Accordingly, the Company measures earnings per share based upon the lower of the Two-class method or the Treasury Stock method. 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
As of May 31, 2017, $38.6 remains available for future purchases of common shares under the current repurchase authorization of the Board of Directors. See Note 12, “Treasury Stock,” for a more complete description of the Company’s share buy-back program.

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