Employee Benefit Plans - Schedule of expected future benefit payments (Details) $ in Millions	May 31, 2025 USD ($)
U.K. \| Pension Plans
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	$ 1.5
2027	1.5
2028	1.5
2029	1.6
2030	1.6
2031 - 2035	8.7
United States \| Other Postretirement Benefits
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	0.9
2027	0.8
2028	0.8
2029	0.7
2030	0.7
2031 - 2035	2.6
Medicare subsidy receipts
2026	0.0
2027	0.0
2028	0.0
2029	0.0
2030	0.0
2031 - 2035	$ 0.1

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Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

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

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Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.

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Amount of prescription drug subsidy receipt expected after fifth fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480266/715-60-50-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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Amount of prescription drug subsidy receipt expected in next fiscal year following current fiscal year.

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