Additional Financial Information (Components of Other Non-current Assets) (Details) - USD ($) $ in Millions		Mar. 31, 2019	Jun. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Investments	[1]	$ 493	$ 275
Inventories, net		221	121
Other	[2]	462	363
Total other non-current assets		$ 1,176	$ 759

[1] Includes an investment with a readily determinable fair value of $389 million and $257 million as of March 31, 2019 and June 30, 2018, respectively (See Note 4 – Fair Value). See Note 2 - Acquisitions, Disposals and Other Transactions for information on recent investments.

[2] Other includes $243 million and $265 million as of March 31, 2019 and June 30, 2018, respectively, related to the Trust (as defined in Note 12 – Pension and Other Postretirement Benefits in the Form 10).