v3.26.1
INCOME TAXES - Effective Income Tax Rate Reconciliation Current Period (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Income Tax Disclosure [Abstract]      
Tax Jurisdiction of Domicile [Extensible Enumeration] UNITED STATES UNITED STATES UNITED STATES
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]      
U.S. Federal statutory tax rate $ 303.6 $ 222.3 $ 184.2
Domestic state and local income taxes, net of Federal tax effect 36.8 24.9 20.5
Foreign tax effects 4.1 2.3 5.8
Effect of cross-border tax laws (20.7)    
Tax credits (7.5)    
Non-taxable and non-deductible items, net 8.3    
Changes in unrecognized tax benefits (3.0)    
Total Provision for income taxes $ 321.6 $ 219.2 $ 179.3
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
U.S. Federal statutory tax rate 21.00% 21.00% 21.00%
Domestic state and local income taxes, net of Federal tax effect 2.50% 2.40% 2.30%
Foreign tax effects 0.30% 0.20% 0.70%
Effect of cross-border tax laws (1.40%)    
Tax credits (0.50%)    
Non-taxable and non-deductible items, net 0.60%    
Changes in unrecognized tax benefits (0.20%)    
Total Provision for income taxes 22.20% 20.70% 20.40%