Description of Business and Basis of Presentation (Narrative) (Details) - USD ($)			9 Months Ended
	Mar. 20, 2019	Mar. 19, 2019	Mar. 31, 2019
Disclosure Basis Of Presentation Details [Line Items]
Estimated annual tax deductions resulting from the Separation and the Distribution, amount		$ 1,500,000,000
Estimated annual tax deductions resulting from the Separation and the Distribution, period			15 years
Estimated reduction to the annual cash tax liability resulting from the Separation and the Distribution, amount		$ 360,000,000
Federal and state applicable tax rate		24.00%
Shares distributed to stockholders of the Parent		621,000,000
Tax Cuts and Jobs Act, maximum measurement period to finalize recording of related tax impacts from enactment date			1 year
Fiscal 2019
Disclosure Basis Of Presentation Details [Line Items]
U.S. statutory federal rate			21.00%
Separation And Distribution Agreement
Disclosure Basis Of Presentation Details [Line Items]
Prepayment of the Company's share of the estimated taxes resulting from the anticipated divestitures by Disney of certain assets		$ 700,000,000
Dividend paid immediately prior to the Distribution		8,500,000,000
Amount of taxes in respect of the Separation and the Distribution and a prepayment of the estimated taxes in respect of divestitures (collectively, the Transaction Tax)		$ 6,500,000,000
Amount of cash payment received, which had the net effect of reducing the Dividend	$ 2,000,000,000
Class A Common Stock
Disclosure Basis Of Presentation Details [Line Items]
Common stock, shares outstanding		354,328,270	354,328,270
Common stock, par value		$ 0.01	$ 0.01
Class B Common Stock
Disclosure Basis Of Presentation Details [Line Items]
Common stock, shares outstanding		266,173,651	266,173,651
Common stock, par value		$ 0.01	$ 0.01