Goodwill and Other Intangibles - Schedule of other intangible assets subject to amortization (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2025 |
May 31, 2026 |
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| Finite-lived Intangible Assets [Roll Forward] | |||
| Beginning balance other intangibles subject to amortization | $ 75.8 | $ 85.8 | $ 85.8 |
| Amortization expense | (2.8) | (2.8) | (11.3) |
| Foreign currency translation | (0.3) | 1.5 | 1.3 |
| Total other intangibles subject to amortization, net of accumulated amortization of $24.8, $24.1 and $22.5, respectively | 72.7 | 84.5 | 75.8 |
| Accumulated amortization of intangible assets | 64.4 | 53.1 | 61.6 |
| Total other intangibles not subject to amortization | 2.1 | 2.1 | 2.1 |
| Total other intangibles | $ 74.8 | $ 86.6 | $ 77.9 |
| X | ||||||||||
- Definition Amount of amortization expense for finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of accumulated amortization of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of indefinite-lived intangible asset. Excludes goodwill. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, after accumulated amortization, of finite- and indefinite-lived intangible assets and capitalized cost for software to be sold, leased, or marketed. Excludes goodwill. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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