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v3.25.2

Employee Benefit Plans (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
May 31, 2025 | May 31, 2024 | May 31, 2023
Employee benefit plans |  |  |
Pension expense | $ 3.9 | $ 3.7 | $ 3.8
Benefit plan contribution excise tax rate upon withdrawal | 20.00% |  |
Benefit plan remaining surplus plan assets | $ 1.6 |  |
Change in projected benefit obligation: |  |  |
Non-cash, after-tax pension settlement charge | 16.1 |  |
Defined Benefit Pension Plans |  |  |
Employee benefit plans |  |  |
Pension expense | 1.4 | $ 1.3 | $ 1.2
Merged U.S. Plan |  |  |
Change in the fair value of plan assets: |  |  |
Funded status at end of year | $ 26.7 |  |
Netherlands Plan |  |  |
Employee benefit plans |  |  |
Discount rate (as a percent) | 3.70% | 3.60% |
Pension expenses for discount rate | 3.60% | 3.70% | 2.80%
Benefit plan assumptions used expected long term rate of return | 4.80% | 4.80% | 3.90%
Change in projected benefit obligation: |  |  |
Projected benefit obligation at beginning of year | $ 52.7 | $ 51.3 |
Service cost | 0.2 | 0.2 |
Interest cost | 1.9 | 1.9 |
Net actuarial loss (gain) | (1.1) | 0.4 |
Benefits and administrative payments | (2.2) | (2.0) |
Foreign currency translation adjustment | 2.3 | 0.9 |
Projected benefit obligation at end of year | 53.8 | 52.7 | $ 51.3
Change in the fair value of plan assets: |  |  |
Fair value of plan assets at beginning of year | 51.4 | 50.2 |
Actual return on plan assets | 1.7 | 2.2 |
Employer contributions | 0.4 |  |
Benefits and administrative payments | (2.2) | (2.0) |
Foreign currency translation adjustment | (2.3) | (1.0) |
Fair value of plan assets at end of year | 53.6 | 51.4 | 50.2
Funded status at end of year | (0.2) | (1.3) |
Accumulated other comprehensive loss | 6.8 | 6.8 |
Accumulated benefit obligation | 51.8 | 50.6 |
Accumulated benefit obligation in excess of plan assets |  |  |
Accumulated benefit obligation | 51.8 | 50.6 |
Net Periodic Benefit Cost |  |  |
Service cost | 0.2 | 0.2 | 0.2
Interest cost | $ 1.9 | 1.9 | 1.5
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Nonoperating Income (Expense) |  |
Expected return on plan assets | $ (2.5) | (2.4) | (2.1)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Nonoperating Income (Expense) |  |
Recognized net actuarial loss | $ 0.1 |  |
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Nonoperating Income (Expense) |  |
Total | $ (0.3) | $ (0.3) | $ (0.4)
Key weighted-average assumptions used in the measurement of the company's projected benefit obligations |  |  |
Discount rate (as a percent) | 3.70% | 3.60% |
Weighted-average assumptions used to determine net periodic pension expense |  |  |
Discount rate: (as a percent) | 3.60% | 3.70% | 2.80%

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- Definition The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period relating to continuing operations, excluding discontinued operations. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. + References No definition available. + Details
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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 2: 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 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(6) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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