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Restructuring - Additional Information (Detail) - USD ($) | 3 Months Ended
--- | ---
Aug. 31, 2023 | Aug. 31, 2022
MAP to Growth |  |
Restructuring Cost And Reserve [Line Items] |  |
Restructuring costs | $ 0 | $ 1,400,000
Restructuring, Incurred Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] | Restructuring Expense | Restructuring Expense
MAP 2025 |  |
Restructuring Cost And Reserve [Line Items] |  |
Total expected costs increased, amount | $ 12,100,000 |
MAP 2025 | Severance and benefit charges |  |
Restructuring Cost And Reserve [Line Items] |  |
Total expected costs increased, amount | 7,400,000 |
MAP 2025 | Facility Closure and Other Related Costs |  |
Restructuring Cost And Reserve [Line Items] |  |
Total expected costs increased, amount | 100,000 |
MAP 2025 | Other Restructuring Costs |  |
Restructuring Cost And Reserve [Line Items] |  |
Total expected costs increased, amount | 4,600,000 |
MAP 2025 | Other Restructuring Costs | Performance Coatings Segment | Tradename |  |
Restructuring Cost And Reserve [Line Items] |  |
Impairment of indefinite-lived assets | 3,300,000 |
USL Restructuring | Universal Sealants |  |
Restructuring Cost And Reserve [Line Items] |  |
Loss on sale of Bridgecare services division | $ 4,500,000 |

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