Employee Benefit Plans - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
May 31, 2026 |
May 31, 2025 |
May 31, 2024 |
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| Employee Benefit Plans (Details) [Line Items] | |||
| Percentage of federal subsidy to sponsors of retiree health care benefit plans | 28.00% | ||
| Cumulative reduction of its accumulated post-retirement benefit obligation | $ 0.1 | $ 0.1 | |
| Defined benefit plans tax expense recognized in AOCI | $ 1.5 | 1.8 | 2.0 |
| Contribution to retirement plan | 8.1 | 8.4 | 8.7 |
| Annuities | Level 3 | |||
| Employee Benefit Plans (Details) [Line Items] | |||
| Fair value of annuities | 29.5 | 3.1 | |
| United States | Other Postretirement Benefits | |||
| Employee Benefit Plans (Details) [Line Items] | |||
| Reduction in benefit obligation | $ 6.2 | $ 6.5 | $ 7.2 |
| Expected long-term return on plan assets | 0.00% | 0.00% | 0.00% |
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- Definition -- None. No documentation exists for this element. -- No definition available.
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- Definition Other Comprehensive Income Defined Benefit Plans Tax Expense Benefit No definition available.
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- Definition Percentage of federal subsidy to sponsors of retiree health care benefit plans. No definition available.
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of decrease in accumulated postretirement benefit obligation for government subsidy related to prescription drug benefits attributed to past service. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. No definition available.
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- Definition Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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