Segment Information (Depreciation and Amortization and Additions to Property and Equipment by Reportable Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Total depreciation and amortization	$ 783	$ 913	$ 1,000
Total additions to property and equipment	400	375	328
Operating Segments | Pharmaceutical
Segment Reporting Information [Line Items]
Total depreciation and amortization	151	135	147
Total additions to property and equipment	55	47	35
Operating Segments | Medical
Segment Reporting Information [Line Items]
Total depreciation and amortization	226	243	288
Total additions to property and equipment	97	86	74
Corporate
Segment Reporting Information [Line Items]
Total depreciation and amortization	406	535	565
Total additions to property and equipment	$ 248	$ 242	$ 219