Goodwill and Other Intangible Assets (Schedule of Goodwill by Reportable Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Goodwill [Line Items]
Goodwill, Transfers	$ (5)	$ 52
Goodwill [Roll Forward]
Beginning balance	8,378	8,316
Foreign currency translation adjustments and other	16	(10)
Goodwill, Impairment Loss			$ (1,400)
Ending balance	8,357	8,378	8,316
Pharmaceutical
Goodwill [Line Items]
Goodwill, Transfers	(5)	45
Goodwill [Roll Forward]
Beginning balance	2,663	2,621
Foreign currency translation adjustments and other	1	3
Ending balance	2,657	2,663	2,621
Accumulated goodwill impairment loss	829	829
Medical
Goodwill [Line Items]
Goodwill, Transfers	0	7
Goodwill [Roll Forward]
Beginning balance	5,715	5,695
Foreign currency translation adjustments and other	15	(13)
Ending balance	5,700	5,715	$ 5,695
Accumulated goodwill impairment loss	$ 1,400	$ 1,372