Segment Information (Assets by Reportable Segment) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information [Line Items]
Total assets	$ 40,112	$ 34,122	$ 30,142
Operating Segments | Pharmaceutical
Segment Reporting Information [Line Items]
Total assets	21,848	20,662	17,385
Operating Segments | Medical
Segment Reporting Information [Line Items]
Total assets	10,688	10,236	7,095
Corporate
Segment Reporting Information [Line Items]
Total assets	$ 7,576	$ 3,224	$ 5,662