Goodwill and Other Intangible Assets (Schedule of Goodwill by Reportable Segment) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Goodwill [Roll Forward]
Beginning balance		$ 8,316	$ 7,221
Goodwill acquired, net of purchase price adjustments		52	3,343
Foreign currency translation adjustments and other		(10)	(34)
Goodwill Divested with Sale of business			(401)
Goodwill reclassified to assets held for sale			(509)
Goodwill, Impairment Loss			(1,372)
Ending balance	$ 8,316	8,378	8,316
Pharmaceutical
Goodwill [Roll Forward]
Beginning balance		2,621	2,939
Goodwill acquired, net of purchase price adjustments		45	1
Foreign currency translation adjustments and other		3	(28)
Goodwill Divested with Sale of business			(347)
Goodwill reclassified to assets held for sale			0
Goodwill, Impairment Loss			0
Ending balance	2,621	2,663	2,621
Accumulated goodwill impairment loss	829	829	829
Medical
Goodwill [Roll Forward]
Beginning balance		5,695	4,282
Goodwill acquired, net of purchase price adjustments		7	3,342
Foreign currency translation adjustments and other		(13)	(6)
Goodwill Divested with Sale of business			(54)
Goodwill reclassified to assets held for sale			(509)
Goodwill, Impairment Loss	(1,372)		(1,372)
Ending balance	5,695	5,715	5,695
Accumulated goodwill impairment loss	$ 1,372	$ 1,372	$ 1,372