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Business Combinations - Additional Information (Detail) - USD ($) |  |  |  |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 31, 2022 | Jul. 01, 2022 | Dec. 09, 2021 | Nov. 30, 2021 | Sep. 17, 2021 | Aug. 31, 2022 | Aug. 31, 2021 | Sep. 21, 2022 | Sep. 01, 2022
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  | $ 1,331,000 | $ 0 |  |
Maximum potential Payments |  |  |  |  | $ 6,500,000 |  |  |  |
Royalty Expense |  |  |  |  | 14,500,000 |  |  |  |
Escrow Deposit |  |  |  |  |  |  |  | $ 150,000 |
CAPInnoVet, Inc [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Purchase price allocation for accounts receivable |  |  |  |  | 308,000 |  |  |  |
Purchase price allocation for inventory |  |  |  |  | 531,000 |  |  |  |
Purchase price allocation for intangible assets |  |  |  |  | 19,200,000 |  |  |  |
Purchase price allocation for accounts payable |  |  |  |  | 120,000 |  |  |  |
Purchase price allocation for other current liabilities |  |  |  |  | 84,000 |  |  |  |
Purchase price allocation for long-term liabilities |  |  |  |  | 6,500,000 |  |  |  |
Cash payable to former owner for purchase of business |  |  |  |  | 150,000 |  |  |  |
Purchase price allocation for Prepaid Expenses |  |  |  |  | 296,000 |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  | $ 17,900,000 |  |  |  |
Delf (UK) Ltd [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash consideration for purchase of business |  |  |  | $ 9,500,000 |  |  |  |  |
Purchase price allocation for accounts receivable |  |  |  | 1,059,000 |  |  |  |  |
Purchase price allocation for inventory |  |  |  | 972,000 |  |  |  |  |
Purchase price allocation for land, property and equipment |  |  |  | 152,000 |  |  |  |  |
Purchase price allocation for intangible assets |  |  |  | 3,100,000 |  |  |  |  |
Purchase price allocation for accounts payable |  |  |  | 497,000 |  |  |  |  |
Purchase price allocation for deferred tax liability |  |  |  | 780,000 |  |  |  |  |
Purchase price allocation for current liabilities |  |  |  | 378,000 |  |  |  |  |
Cash payable to former owner for purchase of business |  |  |  | 722,000 |  |  |  |  |
Purchase price allocation for Prepaid Expenses |  |  |  | $ 31,000 |  |  |  |  |
Genetic Veterinary Services, Inc [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Purchase price allocation for accounts receivable |  |  | $ 38,000 |  |  |  |  |  |
Purchase price allocation for inventory |  |  | 292,000 |  |  |  |  |  |
Purchase price allocation for land, property and equipment |  |  | 399,000 |  |  |  |  |  |
Purchase price allocation for intangible assets |  |  | 5,500,000 |  |  |  |  |  |
Purchase price allocation for accounts payable |  |  | 325,000 |  |  |  |  |  |
Purchase price allocation for other current liabilities |  |  | 321,000 |  |  |  |  |  |
Unearned revenue liability |  |  | 1,900,000 |  |  |  |  |  |
Purchase price allocation for Prepaid Expenses |  |  | 54,000 |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  | $ 11,400,000 |  |  |  |  |  |
Thaineo Biotech Co Ltd |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash consideration for purchase of business |  | $ 1,311,000 |  |  |  |  |  |  |
Purchase price allocation for accounts receivable |  | 179,000 |  |  |  |  |  |  |
Purchase price allocation for inventory |  | 232,000 |  |  |  |  |  |  |
Purchase price allocation for land, property and equipment |  | 16,000 |  |  |  |  |  |  |
Purchase price allocation for intangible assets |  | 600,000 |  |  |  |  |  |  |
Purchase price allocation for accounts payable |  | 3,000 |  |  |  |  |  |  |
Purchase price allocation for deferred tax liability |  | 120,000 |  |  |  |  |  |  |
Purchase price allocation for other non-current assets |  | 6,000 |  |  |  |  |  |  |
Consideration for purchase of business |  | 1,558,000 |  |  |  |  |  |  |
Cash payable to former owner for purchase of business |  | $ 234,000 |  |  |  |  |  |  |
Three M Food Safety Transaction [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Purchase price allocation for long-term liabilities | $ 1,000,000,000 |  |  |  |  | 1,000,000,000 |  |  |
Business Combination enterprise value | 3,300,000,000 |  |  |  |  | $ 3,300,000,000 |  |  |
Business Combination Consideration Transferred Other1 | $ 1,000,000,000 |  |  |  |  |  |  |  |
Business Acquisition, Share Price | $ 20.9 |  |  |  |  | $ 20.9 |  |  |
Number of shares issued | 108,269,946 |  |  |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Finite lived intangible assets, useful life |  |  |  |  |  | 5 years |  |  |
Minimum | CAPInnoVet, Inc [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Finite lived intangible assets, useful life |  |  |  |  | 15 years |  |  |  |
Minimum | Delf (UK) Ltd [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Finite lived intangible assets, useful life |  |  |  | 10 years |  |  |  |  |
Minimum | Genetic Veterinary Services, Inc [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Finite lived intangible assets, useful life |  |  | 5 years |  |  |  |  |  |
Minimum | Thaineo Biotech Co Ltd |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Finite lived intangible assets, useful life |  | 5 years |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Finite lived intangible assets, useful life |  |  |  |  |  | 25 years |  |  |
Maximum | CAPInnoVet, Inc [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Finite lived intangible assets, useful life |  |  |  |  | 20 years |  |  |  |
Maximum | Delf (UK) Ltd [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Finite lived intangible assets, useful life |  |  |  |  |  | 15 years |  |  |
Maximum | Genetic Veterinary Services, Inc [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Finite lived intangible assets, useful life |  |  |  |  |  | 15 years |  |  |
Maximum | Thaineo Biotech Co Ltd |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Finite lived intangible assets, useful life |  | 15 years |  |  |  |  |  |  |
Postmerger Neogen Corp [Member] | Garden SpinCo [Member] | Three M Food Safety Transaction [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Minority interest ownership percentage by Parent |  |  |  |  |  |  |  |  | 50.10%
Postmerger Neogen Corp [Member] | Premerger Neogen Shareholders [Member] | Three M Food Safety Transaction [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Minority interest ownership percentage by Noncontrolling owners |  |  |  |  |  |  |  |  | 49.90%

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