Pension Plans - Weighted-Average Actual Target Allocation of Plan Assets (Detail) - Pension Benefits - USD ($) $ in Thousands	May 31, 2026	May 31, 2025	May 31, 2024
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	100.00%
Actual Asset Allocation	$ 890,296	$ 770,703	$ 720,079
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	100.00%
Actual Asset Allocation	$ 198,764	188,984	$ 174,260
Equity securities \| U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	43.00%
Actual Asset Allocation	$ 410,000	429,200
Equity securities \| Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	35.00%
Actual Asset Allocation	$ 71,200	66,100
Fixed income securities \| U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	35.00%
Actual Asset Allocation	$ 306,800	166,300
Fixed income securities \| Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	44.00%
Actual Asset Allocation	$ 87,600	83,900
Multi-class \| U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	17.00%
Actual Asset Allocation	$ 145,200	155,800
Cash \| U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	5.00%
Actual Asset Allocation	$ 28,300	19,300
Cash \| Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Actual Asset Allocation	$ 700	500
Real Estate \| U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Actual Asset Allocation		100
Real Estate \| Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	21.00%
Actual Asset Allocation	$ 39,300	$ 38,500