v3.26.1
Income Taxes - Schedule of Reconciliation of Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
May 31, 2026
May 31, 2025
May 31, 2024
Income Tax Disclosure [Abstract]      
Tax jurisdiction of domicile United States Plan    
Amount      
Income taxes at the U.S. federal statutory rate $ 526,120 $ 475,482 $ 414,463
Permanent differences   (75,966) (67,310)
State and local income taxes, net of federal benefit 63,394 64,052 49,560
Other   (11,647) 5,330
Foreign tax effects (4,835)    
Effect of cross-border tax laws (3,219)    
Tax credits (13,325)    
Stock-based compensation (52,953)    
Other nontaxable and nondeductible items, net (15,857)    
Changes in unrecognized tax benefits 5,719    
Other 322    
Income taxes $ 505,366 $ 451,921 $ 402,043
Percent      
Income taxes at the U.S. federal statutory rate 21.00%    
State and local income taxes, net of federal benefit 2.50%    
Foreign tax effects (0.20%)    
Effect of cross-border tax laws (0.10%)    
Tax credits (0.50%)    
Stock-based compensation (2.10%)    
Other nontaxable and nondeductible items, net (0.60%)    
Changes in unrecognized tax benefits 0.20%    
Other 0.00%    
Effective income tax rate 20.20%