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Postretirement Benefits - Additional Information (Detail) $ in Millions | May 31, 2023 USD ($)
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Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items] |
Estimated benefits payable in the first year | $ 64.2
Estimated benefits payable in the second year | 69.5
Estimated benefits payable in the third year | 74.6
Estimated benefits payable in the fourth year | 76.7
Estimated benefits payable in the fifth year | 81.8
Estimated benefits payable in the years thereafter | 416.7
Postretirement Benefits |
Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items] |
Estimated benefits payable in the years thereafter | 9.4
Minimum | Postretirement Benefits |
Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items] |
Estimated benefits payable in the first year | 1.2
Estimated benefits payable in the second year | 1.2
Estimated benefits payable in the third year | 1.2
Estimated benefits payable in the fourth year | 1.2
Estimated benefits payable in the fifth year | 1.2
Maximum | Postretirement Benefits |
Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items] |
Estimated benefits payable in the first year | 1.6
Estimated benefits payable in the second year | 1.6
Estimated benefits payable in the third year | 1.6
Estimated benefits payable in the fourth year | 1.6
Estimated benefits payable in the fifth year | $ 1.6

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- Definition 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 -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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