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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) |  |  | 12 Months Ended
--- | --- | --- | ---
Mar. 01, 2025 | Sep. 01, 2024 | May 31, 2026 | May 31, 2025 | May 31, 2024
Goodwill [Line Items] |  |  |  |  |
Goodwill impairment charge |  |  | $ 0 | $ 1,059,300,000 | $ 0
Amortization expense for intangible assets |  |  | 91,800,000 | $ 93,900,000 | 94,900,000
Estimated amortization expense for period, 2027 |  |  | 93,900,000 |  |
Estimated amortization expense for period, 2028 |  |  | 93,000,000 |  |
Estimated amortization expense for period, 2029 |  |  | 89,400,000 |  |
Estimated amortization expense for period, 2030 |  |  | 88,400,000 |  |
Estimated amortization expense for period, 2031 |  |  | 87,800,000 |  |
Estimated amortization expense for period, 2032 and thereafter |  |  | 865,500,000 |  |
Food Safety |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill impairment charge | $ 584,800,000 | $ 461,400,000 |  |  |
Food Safety and Animal Safety |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill impairment charge |  |  | $ 0 |  |
Animal Safety |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill impairment charge | $ 13,100,000 |  |  |  |
Licenses |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Impairment of discontinued product lines |  |  |  |  | $ 600,000

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