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Restructuring - Summary of Charges Recorded in Connection with Restructuring by Reportable Segment (Detail) - USD ($) $ in Thousands | 12 Months Ended
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May 31, 2025 | May 31, 2024 | May 31, 2023
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | $ 24,979 | $ 30,008 | $ 15,465
MAP 2025 |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 24,979 | 30,008 | 11,660
Cumulative Costs to Date |  | 66,647 |  |
Total Expected Costs |  | 86,755 |  |
MAP 2025 | Severance and benefit costs (credits) |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 17,693 | 23,982 | 8,502
Cumulative Costs to Date |  | 50,177 |  |
Total Expected Costs |  | 60,444 |  |
MAP 2025 | Facility Closure and Other Related Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 6,754 | 1,471 | 621
Cumulative Costs to Date |  | 8,846 |  |
Total Expected Costs |  | 18,687 |  |
MAP 2025 | Other Restructuring Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 532 | 4,555 | 2,537
Cumulative Costs to Date |  | 7,624 |  |
Total Expected Costs |  | 7,624 |  |
MAP 2025 | Construction Products Segment |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 5,847 | 9,719 | 6,092
Cumulative Costs to Date |  | 21,658 |  |
Total Expected Costs |  | 33,123 |  |
MAP 2025 | Construction Products Segment | Severance and benefit costs (credits) |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 4,147 | 9,111 | 6,092
Cumulative Costs to Date |  | 19,350 |  |
Total Expected Costs |  | 24,331 |  |
MAP 2025 | Construction Products Segment | Facility Closure and Other Related Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 1,700 | 608 | 0
Cumulative Costs to Date |  | 2,308 |  |
Total Expected Costs |  | 8,792 |  |
MAP 2025 | Performance Coatings Segment |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 3,137 | 7,438 | 3,685
Cumulative Costs to Date |  | 14,260 |  |
Total Expected Costs |  | 16,412 |  |
MAP 2025 | Performance Coatings Segment | Severance and benefit costs (credits) |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 2,885 | 2,711 | 1,148
Cumulative Costs to Date |  | 6,744 |  |
Total Expected Costs |  | 7,363 |  |
MAP 2025 | Performance Coatings Segment | Facility Closure and Other Related Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 252 | 172 | 0
Cumulative Costs to Date |  | 424 |  |
Total Expected Costs |  | 1,957 |  |
MAP 2025 | Performance Coatings Segment | Other Restructuring Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges | [1] | 0 | 4,555 | 2,537
Cumulative Costs to Date | [1] | 7,092 |  |
Total Expected Costs | [1] | 7,092 |  |
MAP 2025 | Consumer Segment |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 10,704 | 9,422 | 1,128
Cumulative Costs to Date |  | 21,254 |  |
Total Expected Costs |  | 24,334 |  |
MAP 2025 | Consumer Segment | Severance and benefit costs (credits) |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 8,451 | 9,266 | 507
Cumulative Costs to Date |  | 18,224 |  |
Total Expected Costs |  | 20,270 |  |
MAP 2025 | Consumer Segment | Facility Closure and Other Related Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 2,253 | 156 | 621
Cumulative Costs to Date |  | 3,030 |  |
Total Expected Costs |  | 4,064 |  |
MAP 2025 | SPG Segments |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 5,291 | 3,429 | 805
Cumulative Costs to Date |  | 9,525 |  |
Total Expected Costs |  | 12,936 |  |
MAP 2025 | SPG Segments | Severance and benefit costs (credits) |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 2,210 | 2,894 | 805
Cumulative Costs to Date |  | 5,909 |  |
Total Expected Costs |  | 8,530 |  |
MAP 2025 | SPG Segments | Facility Closure and Other Related Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 2,549 | 535 | 0
Cumulative Costs to Date |  | 3,084 |  |
Total Expected Costs |  | 3,874 |  |
MAP 2025 | SPG Segments | Other Restructuring Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 532 | 0 | 0
Cumulative Costs to Date |  | 532 |  |
Total Expected Costs |  | 532 |  |
MAP 2025 | Corporate/Other Segment |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 0 | 0 | (50)
Cumulative Costs to Date |  | (50) |  |
Total Expected Costs |  | (50) |  |
MAP 2025 | Corporate/Other Segment | Severance and benefit costs (credits) |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Current Year Charges |  | 0 | $ 0 | $ (50)
Cumulative Costs to Date |  | (50) |  |
Total Expected Costs |  | $ (50) |  |
[1] | Of the $4.6 million of other restructuring costs incurred during the year ended May 31, 2024, $3.3 million is associated with the impairment of an indefinite-lived tradename. The $2.5 million of other restructuring costs incurred during the year ended May 31, 2023, is associated with the impairment of an indefinite-lived tradename. See Note C, "Goodwill and Other Intangible Assets," of the Consolidated Financial Statements below for further description.

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