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Earnings (Loss) Per Share (Tables) | 9 Months Ended
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Feb. 28, 2026
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 periods indicated:
| Three months ended | Nine months ended
| February 28, | February 28,
| 2026 | 2025 | 2026 | 2025
Net income (loss) attributable to Class A and Common Stockholders | $ | 62.5 |  |  | $ | (3.6) |  |  | $ | 47.3 |  |  | $ | (17.3) |
Weighted average Shares of Class A Stock and Common Stock outstanding for basic earnings (loss) per share (in millions) |  | 23.9 |  |  |  | 27.8 |  |  |  | 24.8 |  |  | 28.1 |
Dilutive effect of Common Stock potentially issuable pursuant to stock-based compensation plans (in millions)* |  | 0.6 |  |  |  | — |  |  |  | 0.5 |  |  |  | — |  |
Adjusted weighted average Shares of Class A Stock and Common Stock outstanding for diluted earnings (loss) per share (in millions) |  | 24.5 |  |  |  | 27.8 |  |  |  | 25.3 |  |  | 28.1 |
Earnings (loss) per share of Class A Stock and Common Stock: |  |  |  |  |  |  |  |  |  |  |  |
Basic | $ | 2.61 |  |  | $ | (0.13) |  |  | $ | 1.91 |  |  | $ | (0.61) |
Diluted | $ | 2.55 |  |  | $ | (0.13) |  |  | $ | 1.87 |  |  | $ | (0.61) |
Anti-dilutive shares pursuant to stock-based compensation plans (in millions)* |  | 1.3 |  |  |  | 1.9 |  |  |  | 1.4 |  |  |  | 1.7 |  |
Schedule of stock option activity | The following table sets forth options outstanding pursuant to stock-based compensation plans as of the dates indicated:
| February 28, 2026 |  | February 28, 2025
Options outstanding pursuant to stock-based compensation plans (in millions) | 2.1 |  | 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://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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