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Goodwill and Other Intangibles (Tables) | 3 Months Ended
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Aug. 31, 2025
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:
| August 31, 2025 | May 31, 2025 | August 31, 2024
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 |  | 0.8 |  |  |  | 1.9 |  |  |  | 1.5 |  |
Ending balance | $ | 199.7 |  |  | $ | 198.9 |  |  | $ | 204.4 |  |
(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.
Summary of Activity in Total Other Intangibles for the Periods Indicated | The following table summarizes the activity in Other intangible assets for the periods indicated:
| August 31, 2025 | May 31, 2025 | August 31, 2024
Beginning balance - Other intangibles subject to amortization | $ | 85.8 |  |  | $ | 8.2 |  |  | $ | 8.2 |  |
Additions |  | — |  |  |  | 85.3 |  |  |  | 85.3 |  |
Amortization expense |  | (2.8) |  |  |  | (11.2) |  |  |  | (2.4) |  |
Foreign currency translation |  | 1.5 |  |  |  | 3.5 |  |  |  | 1.5 |  |
Total other intangibles subject to amortization, net of accumulated amortization of $53.1, $50.3 and $41.5, respectively | $ | 84.5 |  |  | $ | 85.8 |  |  | $ | 92.6 |  |
Total other intangibles not subject to amortization | $ | 2.1 |  |  | $ | 2.1 |  |  | $ | 2.1 |  |
Total other intangible assets, net | $ | 86.6 |  |  | $ | 87.9 |  |  | $ | 94.7 |  |

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