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Business Combinations - Additional Information (Detail) - USD ($) $ in Thousands |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 10, 2023 | Sep. 01, 2022 | Jul. 01, 2022 | Nov. 30, 2022 | Nov. 30, 2023 | Aug. 31, 2023 | Nov. 30, 2022 | Nov. 30, 2023 | Nov. 30, 2022 | Oct. 31, 2023 | May 31, 2023
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash consideration for purchase of business |  |  | $ 1,310 | $ 37 |  |  |  |  |  |  |
Purchase price allocation for accounts receivable |  |  | 177 |  |  |  |  |  |  |  |
Purchase price allocation for inventory |  |  | 232 |  |  |  |  |  |  |  |
Purchase price allocation for land, property and equipment |  |  | 16 |  |  |  |  |  |  |  |
Purchase price allocation for intangible assets |  |  | 620 |  |  |  |  |  |  |  |
Purchase price allocation for accounts payable |  |  | 98 |  |  |  |  |  |  |  |
Purchase price allocation for deferred tax liability |  |  | 124 |  |  |  |  |  |  |  |
Purchase price allocation for other current liabilities |  |  | 6 |  |  |  |  |  |  |  |
Purchase price allocation for other non-current assets |  |  | 6 |  |  |  |  |  |  |  |
Cash paid to former owner for purchase of business |  |  |  |  |  |  |  |  |  | $ 234 |
Purchase price allocation for Prepaid Expenses |  |  | 3 |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  | $ (0) | $ (38,896) |  |
Maximum potential Payments | $ 8,500 |  |  |  |  |  |  |  |  |  |
Other non-current liabilities | (930) |  |  |  |  |  |  |  |  |  |
Adjustments to intangible assets |  |  |  |  |  | $ 100 |  |  |  |  |
Stock Issued During Period, Value, Acquisitions |  |  |  |  |  |  | $ 2,262,841 |  |  |  |
Goodwill |  |  |  |  | $ 2,137,983 |  |  | 2,137,983 |  |  | $ 2,137,496
Operating Income (Loss) |  |  |  |  | 14,465 |  | (7,656) | 33,600 | (1,594) |  |
Amortization expense for acquired intangible assets |  |  |  |  | 23,693 |  | 22,687 | 47,397 | 25,069 |  |
Thaineo Biotech Co Ltd |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Consideration for purchase of business |  |  | $ 1,581 |  |  |  |  |  |  |  |
Three M Food Safety Transaction [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash consideration for purchase of business |  | $ 1,000,000 |  |  |  |  |  |  |  |  |
Purchase price allocation for inventory |  | 18,403 |  |  |  |  |  |  |  |  |
Purchase price allocation for land, property and equipment |  | 25,832 |  |  |  |  |  |  |  |  |
Purchase price allocation for intangible assets |  | 1,559,805 |  |  |  |  |  |  |  |  |
Purchase price allocation for deferred tax liability |  | 352,636 |  |  |  |  |  |  |  |  |
Other non-current liabilities |  | (2,832) |  |  |  |  |  |  |  |  |
Business Combination Consideration Transferred Other1 |  | $ 3,200,000 |  |  |  |  |  |  |  |  |
Number of shares issued in business acquisitions |  | 108,269,946 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Acquisitions |  | $ 2,200,000 |  |  |  |  |  |  |  |  |
Goodwill |  | $ 1,974,870 |  |  | 1,970,000 |  |  | 1,970,000 |  |  |
Business acquisition, goodwill, not deductible for tax purposes |  |  |  |  | 1,920,000 |  |  | 1,920,000 |  |  |
Business Combination, Acquisition Related Costs |  |  |  |  |  |  |  | 4,585 |  |  |
Revenues |  |  |  |  | 229,629 |  | 230,033 | 458,616 | 459,894 |  |
Operating Income (Loss) |  |  |  |  | 14,465 |  | (7,656) | 33,600 | 3,437 |  |
Amortization expense for acquired intangible assets |  |  |  |  |  |  |  | 20,120 |  |  |
Three M Food Safety Transaction [Member] | Accounts Receivable Prepaid expenses and other current assets [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Accounts receivable |  |  |  |  | 25,337 |  |  | 25,337 |  |  | $ 12,365
Three M Food Safety Transaction [Member] | General and Administrative Expense [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Acquisition related fees, integration expenses and professional fees |  |  |  |  | 4,585 |  | $ 39,132 | $ 6,246 | $ 52,864 |  |
Corvium Inc [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase price allocation for land, property and equipment | 13 |  |  |  |  |  |  |  |  |  |
Purchase price allocation for intangible assets | 10,280 |  |  |  |  |  |  |  |  |  |
Consideration for purchase of business | 24,067 |  |  |  |  |  |  |  |  |  |
Unearned revenue liability | 1,827 |  |  |  |  |  |  |  |  |  |
Purchase price allocation for Prepaid Expenses | 66 |  |  |  |  |  |  |  |  |  |
Other non-current liabilities | (930) |  |  |  |  |  |  |  |  |  |
Escrow Deposit | 9,004 |  |  |  |  |  |  |  |  |  |
Escrow balance released |  |  |  |  |  | $ 8,000 |  |  |  |  |
Goodwill | $ 16,884 |  |  |  |  |  |  |  |  |  |
3M FSD [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  | 99,847 |  |  |  |  |  |
Operating Income (Loss) |  |  |  |  | $ 12,000 |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Finite lived intangible assets, useful life |  |  |  |  | 2 years |  |  | 2 years |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Finite lived intangible assets, useful life |  |  |  |  | 25 years |  |  | 25 years |  |  |
Postmerger Neogen Corp [Member] | Garden SpinCo [Member] | Three M Food Safety Transaction [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] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Minority interest ownership percentage by Noncontrolling owners |  | 49.90% |  |  |  |  |  |  |  |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482686/350-30-45-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479405/805-10-25-23 + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 30 -Paragraph 8 -SubTopic 30 -Topic 805 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479637/805-30-30-8 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -SubTopic 30 -Topic 805 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479581/805-30-50-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 30 -Paragraph 7 -SubTopic 30 -Topic 805 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479637/805-30-30-7 + Details
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- Definition Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -SubTopic 30 -Topic 805 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479581/805-30-50-1 + Details
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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-1 + Details
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- Definition Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-1 + Details
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- Definition Amount of deferred revenue expected to be recognized as such within one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-1 + Details
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- Definition Amount of other liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-1 + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-1 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-1 + Details
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- Definition Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-1 + Details
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- Definition Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-1 + Details
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- Definition The amount of property, plant, and equipment recognized as of the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479303/805-10-55-37 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-1 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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