Postretirement Benefits - Weighted-Average Assumptions used to Determine Benefit Obligations and Net Periodic Postretirement Cost (Detail) - Postretirement Benefits	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
Domestic
Health Care Cost Trend Rates Assumptions [Line Items]
Year-End Benefit Obligations, Discount rate	5.50%	5.20%
Year-End Benefit Obligations, Current healthcare cost trend rate	8.90%	6.00%
Year-End Benefit Obligations, Ultimate healthcare cost trend rate	4.04%	4.03%
Year-End Benefit Obligation, Year ultimate healthcare cost trend rate will be realized	2049	2045
Net Periodic Postretirement Cost, Discount rate	5.20%	4.36%	2.47%
Net Periodic Postretirement Cost, Current healthcare cost trend rate	6.00%	6.23%	6.07%
Net Periodic Postretirement Cost, Ultimate healthcare cost trend rate	4.03%	4.03%	4.36%
Net Periodic Postretirement Cost, Year ultimate healthcare cost trend rate will be realized	2045	2045	2037
Non-U.S. Plans
Health Care Cost Trend Rates Assumptions [Line Items]
Year-End Benefit Obligations, Discount rate	5.03%	5.10%
Year-End Benefit Obligations, Current healthcare cost trend rate	5.21%	5.53%
Year-End Benefit Obligations, Ultimate healthcare cost trend rate	3.70%	3.70%
Year-End Benefit Obligation, Year ultimate healthcare cost trend rate will be realized	2040	2040
Net Periodic Postretirement Cost, Discount rate	5.10%	5.13%	3.51%
Net Periodic Postretirement Cost, Current healthcare cost trend rate	5.53%	5.58%	5.68%
Net Periodic Postretirement Cost, Ultimate healthcare cost trend rate	3.70%	3.70%	3.70%
Net Periodic Postretirement Cost, Year ultimate healthcare cost trend rate will be realized	2040	2040	2040