v3.26.1
Income Taxes - Reconciliation of Income Tax Expense (Benefit) (Detail) - USD ($)
$ in Thousands
12 Months Ended
May 31, 2026
May 31, 2025
May 31, 2024
Income tax reconciliation, Amount      
Income tax expense at the U.S. statutory federal income tax rate $ 182,771 $ 166,480 $ 165,446
Foreign rate differential and other foreign tax adjustments   (32,497) 9,632
Impact of foreign derived intangible income deduction   (38,174) (5,290)
State and local income taxes, net 29,359 [1] 34,432 28,000
Intragroup asset transfer, Amount (17,839)    
Effect of cross border tax laws (2,107)    
Foreign tax credit (23,503)    
Other, Tax credits (3,000)    
Impact of GILTI provisions   3,960 3,548
Valuation allowance 18,981 17,246 (754)
Nondeductible business expense 4,858 1,895 1,944
Deferred tax liability for unremitted foreign earnings     3,658
Changes in unrecognized tax benefits (13) (3,771) 2,209
Equity-based compensation   (1,963) (5,496)
Nondeductible goodwill impairment   2,119  
Deferred tax adjustment to U.S. foreign tax credit carryforwards (43,900) (43,922)  
Other   (3,372) (4,502)
Other adjustments 3,384    
Provision for Income Taxes $ 207,857 $ 102,433 $ 198,395
Income tax reconciliation, Percent      
Federal statutory tax rate, Percent 21.00%    
State and local income taxes, net, Percent [1] 3.40%    
Intragroup asset transfer, Percent (2.10%)    
Effect of cross border tax laws, Percent (0.20%)    
Foreign tax credit, Percent (2.70%)    
Other, Tax credits, Percent (0.40%)    
Changes in valuation allowances, Percent 2.20%    
Nontaxable or nondeductible items, Percent 0.50%    
Changes in unrecognized tax benefits, Percent 0.00%    
Other adjustments, Percent 0.40%    
Effective Income Tax Rate, Percent 23.90% 12.90% 25.20%
Capital Losses      
Income tax reconciliation, Amount      
Other adjustments $ (18,369)    
Income tax reconciliation, Percent      
Other adjustments, Percent (2.10%)    
U.S. Interest Deduction Carryforwards      
Income tax reconciliation, Amount      
Other adjustments $ (13,315)    
Income tax reconciliation, Percent      
Other adjustments, Percent (1.50%)    
Canada      
Income tax reconciliation, Amount      
Withholding tax $ 19,856    
Other adjustments $ 1,497    
Income tax reconciliation, Percent      
Withholding tax, Percent 2.30%    
Other adjustments, Percent 0.20%    
United Kingdom      
Income tax reconciliation, Amount      
Intragroup asset transfer, Amount $ 18,509    
Other adjustments $ (155)    
Income tax reconciliation, Percent      
Intragroup asset transfer, Percent 2.10%    
Other adjustments, Percent 0.00%    
Other      
Income tax reconciliation, Amount      
Statutory tax rate difference between Canada and United States $ 6,943    
Income tax reconciliation, Percent      
Statutory tax rate difference between Canada and United States, Percent 0.80%    
[1] State income taxes in California, Illinois, New Jersey, Pennsylvania, New York and Wisconsin account for the majority (greater than 50%) of the tax effect in this category.