Long-Term Debt and Credit Facilities - Exchanges and Issuances (Details) - USD ($) $ in Millions	Sep. 30, 2024	Jun. 30, 2024
Long-term debt
Aggregate principal amount		$ 7,548
Term loan | Term Loan B-1 And B-2
Long-term debt
Aggregate principal amount		$ 2,398
Senior notes
Long-term debt
Aggregate principal amount	$ 357
Senior notes | 4.625% Senior Notes Due 2027
Long-term debt
Stated interest rate	4.625%
Aggregate principal amount	$ 280
Senior notes | 10.500% First Lien Notes Due 2029
Long-term debt
Stated interest rate		10.50%
Aggregate principal amount		$ 668
Senior notes | 10.750% First Lien Notes Due 2029
Long-term debt
Stated interest rate		10.75%
Aggregate principal amount		$ 678
Senior notes | 4.875% First Lien Notes Due 2029
Long-term debt
Stated interest rate		4.875%
Aggregate principal amount		$ 606
Senior notes | 4.500% Second Lien Notes Due 2029
Long-term debt
Stated interest rate		4.50%
Aggregate principal amount		$ 712
Senior notes | 3.875% Second Lien Notes Due 2030
Long-term debt
Stated interest rate		3.875%
Aggregate principal amount		$ 458
Senior notes | 4.000% Second Lien Notes Due 2031
Long-term debt
Stated interest rate		4.00%
Aggregate principal amount		$ 453
Senior notes | 11.000% First Lien Notes Due 2029
Long-term debt
Stated interest rate		11.00%
Aggregate principal amount		$ 1,575
Senior notes | 3.400% Senior Notes Due 2027
Long-term debt
Stated interest rate		3.40%
Senior notes | 3.875% Senior Notes Due 2029
Long-term debt
Stated interest rate		3.875%
Senior notes | 4.625% Senior Notes Due 2027
Long-term debt
Stated interest rate		4.625%
Senior notes | 4.250% Senior Notes Due 2028
Long-term debt
Stated interest rate		4.25%
Senior notes | 3.625% Senior Notes Due 2029
Long-term debt
Stated interest rate		3.625%
Senior notes | 3.750% Senior Notes Due 2029
Long-term debt
Stated interest rate		3.75%