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Summary of Significant Accounting Policies - Activity in Allowance for Credit Losses (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
May 31, 2026 | May 31, 2025 | May 31, 2024
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Beginning Balance |  | $ 5.4 | $ 4.1 | $ 2.8
Provision |  | 0.7 | 3.3 | 1.7
Recoveries |  | 0.0 | (0.2) | (0.2)
Write-offs |  | (1.6) | (1.6) | (0.2)
Reclass to held for sale | [1] | (0.5) | (0.2) | 0.0
Ending Balance |  | $ 4.0 | $ 5.4 | 4.1
Ending Balance |  |  |  | $ 4.1
[1] | This is allowance for credit losses reclassified to the Company's held for sale entities. See Note 4. "Assets Held for Sale and Divestiture" for further detail.

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