Pension Plans - Weighted-Average Actual Target Allocation of Plan Assets (Detail) - Pension Benefits - USD ($) $ in Thousands	May 31, 2025	May 31, 2024	May 31, 2023
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	100.00%
Actual Asset Allocation	$ 770,703	$ 720,079	$ 631,486
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	100.00%
Actual Asset Allocation	$ 188,984	174,260	$ 166,120
Equity securities \| U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	55.00%
Actual Asset Allocation	$ 429,200	399,000
Equity securities \| Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	34.00%
Actual Asset Allocation	$ 66,100	60,400
Fixed income securities \| U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	20.00%
Actual Asset Allocation	$ 166,300	151,200
Fixed income securities \| Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	45.00%
Actual Asset Allocation	$ 83,900	82,900
Multi-class \| U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	20.00%
Actual Asset Allocation	$ 155,800	141,200
Cash \| U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	5.00%
Actual Asset Allocation	$ 19,300	28,500
Cash \| Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Actual Asset Allocation	500	200
Real Estate \| U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Actual Asset Allocation	$ 100	200
Real Estate \| Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	21.00%
Actual Asset Allocation	$ 38,500	$ 30,800