Additional Financial Information (Other, Net) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Acquisition related and other transaction costs	[1]	$ (38)	$ (32)	$ (78)	$ (32)
Unrealized losses on investments	[2]	(255)	0	(72)	0
U.K. Newspaper Matters Indemnity	[3]	(21)	(10)	(30)	3
Settlement loss related to pension plans	[4]	0	(50)	0	(50)
Other		(25)	(1)	(20)	(16)
Total other, net		$ (339)	$ (93)	$ (200)	$ (95)

[1] The acquisition related and other transaction costs for the three and six months ended December 31, 2018 are related to the Separation and Distribution which includes retention related costs.

[2] Represents the unrealized losses related to changes in fair value of the Company’s investment in Roku which are recognized in net income in accordance with ASU 2016-01 (See Note 1 - Description of Business and Basis of Presentation under the heading “Recently Adopted and Recently Issued Accounting Guidance and U.S. Tax Reform”)

[3] See Note 9 - Commitments and Contingencies.

[4] The settlement loss was primarily related to the Shared Plans (See Note 12 - Pension and Other Postretirement Benefits in the Form 10).