Goodwill and Intangible Assets, Net (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019		Jun. 30, 2018	Jun. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization of finite-lived intangible assets	$ 15	[1]	$ 14	$ 15
Accumulated impairment loss, goodwill	$ 371		$ 371

[1] Net of accumulated amortization of $129 million and $114 million as of June 30, 2019 and 2018, respectively. The average useful life of other intangible assets ranges from five to 20 years.