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Earnings (Loss) Per Share | 9 Months Ended
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Feb. 28, 2019
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 periods indicated:
| Three months ended February 28, | Nine months ended February 28,
| 2019 |  | 2018 | 2019 |  | 2018
Net income (loss) attributable to Class A and Common Shares | $ | (12.6 | ) |  | $ | (49.2 | ) | $ | (2.3 | ) |  | $ | (55.8 | )
Weighted average Shares of Class A Stock and Common Stock outstanding for basic earnings (loss) per share (in millions) | 35.3 |  |  | 34.9 |  | 35.2 |  |  | 35.1 |
Dilutive effect of Class A Stock and Common Stock potentially issuable pursuant to stock-based compensation plans (in millions) * | — |  |  | — |  | — |  |  | — |
Adjusted weighted average Shares of Class A Stock and Common Stock outstanding for diluted earnings (loss) per share (in millions) | 35.3 |  |  | 34.9 |  | 35.2 |  |  | 35.1 |
Earnings (loss) per share of Class A Stock and Common Stock: |  |  |  |  |  |  |  |  |  |
Basic | $ | (0.36 | ) |  | $ | (1.41 | ) | $ | (0.07 | ) |  | $ | (1.59 | )
Diluted | $ | (0.36 | ) |  | $ | (1.41 | ) | $ | (0.07 | ) |  | $ | (1.59 | )
* The Company experienced a Net loss for all periods presented and therefore did not report any dilutive share impact. The following table sets forth options outstanding pursuant to stock-based compensation plans as of the dates indicated:
| February 28, 2019 |  | February 28, 2018
Options outstanding pursuant to stock-based compensation plans (in millions) | 2.9 |  |  | 3.1 |
There were 0.7 million of potentially anti-dilutive shares pursuant to stock-based compensation plans as of February 28, 2019. 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. For the three and nine month periods ended February 28, 2019 and February 28, 2018, the Company experienced a Net loss and did not allocate any losses to the participating RSUs. As of February 28, 2019, $59.4 remained available for future purchases of common shares under the repurchase authorization of the Board of Directors (the "Board") in effect on that date. See Note 11, Treasury Stock, for a more complete description of the Company’s share buy-back program.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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