Additional Financial Information - Schedule of Components of Accounts Payable, Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Jun. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued expenses	$ 1,013	$ 1,081
Programming payable	752	1,070
Deferred revenue	318	299
Operating lease liabilities	42	41
Other current liabilities	291	406
Total accounts payable, accrued expenses and other current liabilities	$ 2,416	$ 2,897