Long-Term Debt and Credit Facilities - Debt Issuances (Details) - USD ($) $ in Millions	Sep. 30, 2024	Jun. 30, 2024
Long-term debt
Debt instrument, face amount		$ 7,548
Senior notes
Long-term debt
Debt instrument, face amount	$ 357
Senior notes | 3.400% senior secured notes due 2027 (unsecured)
Long-term debt
Stated interest rate	3.40%
Debt instrument, face amount	$ 77
Senior notes | 4.625% senior notes due 2027
Long-term debt
Stated interest rate	4.625%
Debt instrument, face amount	$ 280