Additional Financial Information (Components of Accounts Payable, Accrued Expenses and Other Current Liabilities) (Details) - USD ($) $ in Millions		Jun. 30, 2019	Jun. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Accrued expenses		$ 835	$ 530
Program rights payable		514	380
Deferred revenue		169	147
Income taxes payable	[1]	6	553
Other current liabilities		188	149
Total accounts payable, accrued expenses and other current liabilities		$ 1,712	$ 1,759

[1] The amount of income taxes payable as of June 30, 2018 represents the estimated liability determined using the separate tax return methodology as discussed in Note 1—Description of Business and Basis of Presentation.