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Goodwill and Other Intangible Assets - Additional Information (Detail) |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 01, 2023 USD ($) | Aug. 31, 2023 USD ($) | Feb. 28, 2023 | Feb. 28, 2023 USD ($) | May 31, 2025 USD ($) ReportingUnit | May 31, 2024 USD ($) | May 31, 2023 USD ($)
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Accumulated goodwill impairment losses |  |  |  |  | $ 204,400,000 |  |
Goodwill impairment |  |  |  | $ 36,700,000 | 11,352,000 | $ 0 | $ 36,745,000
Intangible asset amortization expense |  |  |  |  | 45,500,000 | 39,100,000 | 43,500,000
Goodwill |  |  |  |  | 1,617,626,000 | 1,308,911,000 | 1,293,588,000
Impairment of our long-lived assets |  |  |  |  |  |  | 0
Future amortization expense of intangible asset in 2026 |  |  |  |  | 42,000,000 |  |
Future amortization expense of intangible asset in 2027 |  |  |  |  | 40,400,000 |  |
Future amortization expense of intangible asset in 2028 |  |  |  |  | 38,200,000 |  |
Future amortization expense of intangible asset in 2029 |  |  |  |  | 36,900,000 |  |
Future amortization expense of intangible asset in 2030 |  |  |  |  | 34,700,000 |  |
Impairment loss of goodwill on annual impairment test |  |  |  |  |  | 0 | 0
Loss on sale of Bridgecare services division |  |  |  |  |  |  | 24,700,000
Universal Sealants |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Goodwill impairment |  |  |  |  |  |  | 36,700,000
Goodwill |  |  |  |  |  |  | 1,100,000
Impairments for definite-lived long-lived assets |  |  |  | 0 |  |  |
Universal Sealants | Trade names |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Impairment charge of indefinite lived intangible assets |  |  |  | $ 2,500,000 |  |  | $ 2,500,000
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  | Restructuring charges |  |  | Restructuring charges
Universal Sealants | USL Restructuring |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Loss on sale of Bridgecare services division |  | $ 4,500,000 |  |  |  |  |
Color Group Reporting Unit |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Goodwill |  |  |  |  | 0 |  |
SPG Segments |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Accumulated goodwill impairment losses |  |  |  |  | 152,800,000 |  |
Goodwill impairment |  |  |  |  | 11,352,000 |  |
Goodwill |  |  |  |  | $ 140,919,000 | 150,650,000 | $ 150,074,000
Number of new reporting units | ReportingUnit |  |  |  |  | 2 |  |
SPG Segments | Color Group Reporting Unit |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Goodwill impairment |  |  |  |  | $ 11,400,000 |  |
SPG Segments | DayGlo and Kirker Reporting Units |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Number of reporting units | ReportingUnit |  |  |  |  | 1 |  |
SPG Segments | The Industrial Coatings Group Reporting Unit |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Number of reporting units | ReportingUnit |  |  |  |  | 1 |  |
CPG Segment |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Accumulated goodwill impairment losses |  |  |  |  | $ 14,900,000 |  |
Goodwill |  |  |  |  | 484,955,000 | 451,467,000 | 450,555,000
Goodwill transferred |  |  |  |  |  | (11,414,000) |
Consumer Segment |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Goodwill |  |  |  |  | 768,079,000 | 532,978,000 | 531,227,000
Consumer Segment | Trade Names |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Impairment charge of indefinite lived intangible assets |  |  |  |  | $ 1,700,000 | $ 1,000,000 |
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  | Less: Selling, General and Administrative Expenses | Less: Selling, General and Administrative Expenses |
PCG Segment |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Accumulated goodwill impairment losses |  |  |  |  | $ 36,700,000 |  |
Goodwill |  |  |  |  | $ 223,673,000 | $ 173,816,000 | $ 161,732,000
Goodwill transferred | $ 11,400,000 |  |  |  |  | $ 11,414,000 |
PCG Segment | Other Restructuring Costs | Trade names |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Impairment charge of indefinite lived intangible assets |  | $ 3,300,000 |  |  |  |  |
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration] |  | Restructuring charges |  |  |  |  |
PCG Segment | Universal Sealants |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |
Percentage of annual revenue |  |  | 30.00% |  |  |  |

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