Segment Information (Revenue by Reportable Segment) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Total revenue	$ 33,633	$ 31,821	$ 101,460	$ 97,010
Operating Segments
Segment Reporting Information [Line Items]
Total revenue	33,636	31,824	101,470	97,018
Operating Segments | Pharmaceutical
Segment Reporting Information [Line Items]
Total revenue	29,720	28,406	89,786	86,911
Operating Segments | Medical
Segment Reporting Information [Line Items]
Total revenue	3,916	3,418	11,684	10,107
Corporate
Segment Reporting Information [Line Items]
Total revenue	$ (3)	$ (3)	$ (10)	$ (8)