Segment Information (Revenue by Reportable Segment) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Total revenue	$ 32,641	$ 32,039
Operating Segments
Segment Reporting Information [Line Items]
Total revenue	32,644	32,041
Operating Segments | Pharmaceutical
Segment Reporting Information [Line Items]
Total revenue	28,920	28,762
Operating Segments | Medical
Segment Reporting Information [Line Items]
Total revenue	3,724	3,279
Corporate
Segment Reporting Information [Line Items]
Total revenue	$ (3)	$ (2)