Additional Financial Information (Components of Accounts Payable, Accrued Expenses and Other Current Liabilities) (Details) - USD ($) $ in Millions		Mar. 31, 2019	Jun. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Accrued expenses		$ 598	$ 530
Program rights payable		404	380
Deferred revenue		103	147
Income taxes payable	[1]	0	553
Other current liabilities		192	149
Total accounts payable, accrued expenses and other current liabilities		$ 1,297	$ 1,759

[1] As discussed in Note 1 – Description of Business and Basis of Presentation, income tax items have been calculated as if the Company filed a separate return and was operating as a standalone business for purposes of the Company’s financial statements for the period prior to the Distribution. Therefore, tax balances reflected in the Consolidated and Combined Financial Statements may not be reflective of the Company’s actual tax balances prior to or subsequent to the Distribution. The amount of income taxes payable, for periods subsequent to the Distribution, represents the actual tax liabilities rather than the separate tax return methodology.