Additional Financial Information (Components of Other, Net) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Unrealized gains (losses) on investments	[1]	$ 328	$ (255)	$ 371	$ (72)
U.K. Newspaper Matters Indemnity	[2]	(31)	(21)	(44)	(30)
Transaction costs	[3]	2	(38)	(43)	(78)
Other		3	(25)	3	(20)
Total other, net		$ 302	$ (339)	$ 287	$ (200)

[1] Represents the net unrealized gains (losses) related to changes in fair value of the Company’s investments in equity securities which are recognized in the Statements of Operations in accordance with ASC 321 (See Note 4—Fair Value).

[2] See Note 11—Commitments and Contingencies under the heading “U.K. Newspaper Matters Indemnity.

[3] The transaction costs for the three and six months ended December 31, 2019 and 2018 are primarily related to the Separation and the Distribution and include retention related costs and for the six months ended December 31, 2019 also includes costs associated with the profits participants litigation (See Note 11—Commitments and Contingencies under the heading “Profits Participants Litigation”). The transaction costs for the three months ended December 31, 2019 were offset by an adjustment to the receivables from Disney pursuant to the Separation and Distribution Agreement.