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Description of Business and Basis of Presentation - Additional Information (Detail) - USD ($) |  | 6 Months Ended |
--- | --- | --- | ---
Sep. 01, 2022 | Nov. 30, 2022 | May 31, 2022
Significant Accounting Policies [Line Items] |  |  |
Right of use assets |  | $ 3,707,000 | $ 3,184,000
Lease liabilities |  | $ 3,630,000 | $ 3,228,000
Number Of Days Determined On Fair Value Of Assets And Liabilities From The Acquisition Date |  | 12 months |
Customer One |  |  |
Significant Accounting Policies [Line Items] |  |  |
Account receivable percentage from major customer |  | 10.00% |
Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Finite lived intangible assets, useful life |  | 5 years |
Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Finite lived intangible assets, useful life |  | 25 years |
Three M Food Safety Transaction [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Number of shares issued in business acquisitions | 108,269,946 |  |
Consideration for purchase of business | $ 3,200,000,000 |  |
Three M Food Safety Transaction [Member] | Premerger Neogen Shareholders [Member] | Postmerger Neogen Corp [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Minority interest ownership percentage by Parent | 50.10% |  |
Minority interest ownership percentage by Noncontrolling owners | 49.90% |  |

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