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Income Taxes - Reconciliation of Federal Statutory Corporate Income Tax Rate to Total Tax Provision (Detail)
12 Months Ended
May 31, 2022
May 31, 2021
May 31, 2020
Income Tax Disclosure [Abstract]      
Federal statutory corporate income tax rate 21.00% 21.00% 21.00%
State and local income taxes, net of federal tax benefit 2.30% 0.80% 2.40%
Non-U.S. income taxes at other than federal statutory rate (0.90%) (0.30%) 3.10%
Excess benefit related to share-based payment awards (0.20%) (0.50%) (1.20%)
Nondeductible executive compensation 0.90% 0.60% 1.10%
Oil & Gas capital stock loss   (1.50%)  
Other 0.20% (0.50%) (1.30%)
Effective tax rate attributable to controlling interest 23.30% 19.60% 25.10%