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Employee Benefit Plans - Schedule of targeted weighted average asset allocations (Details) - U.K. - Pension Plans	May 31, 2025	May 31, 2024
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average asset allocations	100.00%	100.00%
Targeted asset allocation	100.00%
Equity securities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Targeted asset allocation	45.00%
Cash and cash equivalents
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average asset allocations	4.20%	4.10%
Targeted asset allocation	0.00%
Liability-driven instruments
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average asset allocations	37.80%	43.50%
Targeted asset allocation	45.00%
Other
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average asset allocations	15.30%	15.10%
Targeted asset allocation	10.00%
Debt Securities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average asset allocations	42.70%	37.30%

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- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480482/715-20-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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