For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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- Definition

Date the entity disposed of a business or a group of assets, in YYYY-MM-DD format.

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8672-108599

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Number of Joint Ventures

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Segment Data - Additional Information (Detail)	12 Months Ended
Segment Data - Additional Information (Detail)	May 31, 2022 Jointventure Segment	May 31, 2021	May 31, 2020
Segment Reporting Information [Line Items]
Number of reportable segments \| Segment	4
Number of joint ventures	9
Joint Venture Transactions
Segment Reporting Information [Line Items]
Number of joint ventures	4
Pressure Cylinders
Segment Reporting Information [Line Items]
Number of reportable segments \| Segment	3
Steel Processing \| Sales Revenue, Net \| Product Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	75.00%	64.90%	60.80%
Consumer products \| Sales Revenue, Net \| Product Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	12.10%	16.50%	14.70%
Building Products \| Sales Revenue, Net \| Product Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	10.30%	12.70%	12.50%
Sustainable Energy Solutions \| Sales Revenue, Net \| Product Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	2.50%	4.30%	4.00%
Engineered Cabs
Segment Reporting Information [Line Items]
Date of disposition	Nov. 01, 2019
Worthington Steel \| Steel Processing
Segment Reporting Information [Line Items]
Number of joint ventures	4