Weighted-Average Actual Target Allocation of Plan Assets (Detail) - Pension Benefits - USD ($) $ in Thousands	May 31, 2024	May 31, 2023	May 31, 2022
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	100.00%
Actual Asset Allocation	$ 720,079	$ 631,486	$ 616,960
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	100.00%
Actual Asset Allocation	$ 174,260	166,120	$ 193,375
Equity securities | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	55.00%
Actual Asset Allocation	$ 399,000	340,100
Equity securities | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	40.00%
Actual Asset Allocation	$ 60,400	61,800
Fixed income securities | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	20.00%
Actual Asset Allocation	$ 151,200	129,200
Fixed income securities | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	48.00%
Actual Asset Allocation	$ 82,900	81,500
Multi-class | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	20.00%
Actual Asset Allocation	$ 141,200	125,300
Cash | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	5.00%
Actual Asset Allocation	$ 28,500	36,600
Cash | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Actual Asset Allocation	200	100
Real Estate | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Actual Asset Allocation	$ 200	300
Real Estate | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	12.00%
Actual Asset Allocation	$ 30,800	$ 22,700