v3.26.1
Fair Value - Schedule of Borrowings (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Jun. 30, 2025
Fair value    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Long-term debt, fair value $ 6,561 $ 6,625
Carrying value    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Long-term debt, fair value $ 6,605 $ 6,602