v3.26.1
Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($)
$ in Millions
12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2024
Amount      
Computed tax at statutory rate $ 378.0 $ 517.0 $ 523.0
State and local income taxes, net of federal benefit 75.0    
Foreign tax effects 16.0    
Tax credits (1.0)    
Nondeductible or nontaxable items 10.0 6.0 3.0
Changes in unrecognized tax benefits (2.0)    
Total provision (benefit) for income taxes $ 476.0 $ 517.0 $ 522.0
Percent      
Computed tax at statutory rate 21.00% 25.00% 25.00%
State and local income taxes, net of federal benefit 4.00%    
Foreign tax effects 1.00%    
Tax credits 0.00%    
Nondeductible or nontaxable items 0.00% 1.00% 0.00%
Changes in unrecognized tax benefits 0.00%    
Effective tax rate 26.00% 25.00% 25.00%
United States      
Amount      
State and local income taxes, net of federal benefit   $ 70.0 $ 77.0
Foreign tax effects   (81.0) (84.0)
Other   $ 4.0 $ 1.0
Percent      
State and local income taxes, net of federal benefit   3.00% 4.00%
Foreign tax effects   (4.00%) (4.00%)
Other   0.00% 0.00%
Other foreign jurisdictions      
Amount      
Foreign tax effects   $ 1.0 $ 2.0
Percent      
Foreign tax effects   0.00% 0.00%