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Goodwill and Other Intangibles (Tables) | 9 Months Ended
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Feb. 28, 2026
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Activity in Goodwill for the Periods Indicated | The following table summarizes the activity in Goodwill for the periods indicated:
| February 28, 2026 | May 31, 2025 | February 28, 2025
Gross beginning balance | $ | 238.5 |  |  | $ | 172.4 |  |  | $ | 172.4 |  |
Accumulated impairment |  | (39.6) |  |  |  | (39.6) |  |  |  | (39.6) |  |
Beginning balance | $ | 198.9 |  |  | $ | 132.8 |  |  | $ | 132.8 |  |
Additions (1) |  | — |  |  |  | 64.2 |  |  |  | 70.1 |  |
Foreign currency translation |  | 1.4 |  |  |  | 1.9 |  |  |  | (3.8) |  |
Ending balance | $ | 200.3 |  |  | $ | 198.9 |  |  | $ | 200.0 |  |
(1) The additions during the twelve months ended May 31, 2025 included measurement period adjustments for the 9 Story acquisition which reflected a decrease to goodwill of $5.9 resulting from a net increase in the estimated fair value of the net assets acquired. The increase in the estimated fair value of the net assets acquired consisted of a decrease to deferred tax liabilities of $5.3, an increase to operating lease right-of-use assets of $0.3, a decrease to lease liabilities of $0.1, an increase to the property, plant and equipment of $0.1 and a decrease to the purchase price as a result of a working capital adjustment of $0.1. The additions during the nine months ended February 28, 2025 included measurement period adjustments for the 9 Story acquisition which reflected an increase to goodwill of $0.9 resulting from a net decrease in the estimated fair value of the net assets acquired. The decrease in the estimated fair value of the net assets acquired consisted of an increase to deferred tax liabilities of $1.4, an increase to operating lease right-of-use assets of $0.3, a decrease to lease liabilities of $0.1, and a decrease to the purchase price as a result of a working capital adjustment of $0.1.
Summary of Activity in Total Other Intangibles for the Periods Indicated | The following table summarizes the activity on a year-to-date basis in Other intangible assets for the periods indicated:
| February 28, 2026 | May 31, 2025 | February 28, 2025
Beginning balance - Other intangibles subject to amortization | $ | 85.8 |  |  | $ | 8.2 |  |  | $ | 8.2 |  |
Additions |  | — |  |  |  | 85.3 |  |  |  | 85.3 |  |
Amortization expense |  | (8.4) |  |  |  | (11.2) |  |  |  | (8.1) |  |
Foreign currency translation |  | 2.2 |  |  |  | 3.5 |  |  |  | (4.1) |  |
Total other intangibles subject to amortization, net of accumulated amortization of $58.7, $50.3 and $47.2, respectively | $ | 79.6 |  |  | $ | 85.8 |  |  | $ | 81.3 |  |
Total other intangibles not subject to amortization | $ | 2.1 |  |  | $ | 2.1 |  |  | $ | 2.1 |  |
Total other intangible assets, net | $ | 81.7 |  |  | $ | 87.9 |  |  | $ | 83.4 |  |

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