Segment Information (Depreciation and Amortization and Additions to Property and Equipment by Reportable Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Total depreciation and amortization	$ 1,000	$ 1,032	$ 717
Total additions to property and equipment	328	384	387
Operating Segments | Pharmaceutical
Segment Reporting Information [Line Items]
Total depreciation and amortization	147	156	122
Total additions to property and equipment	35	58	50
Operating Segments | Medical
Segment Reporting Information [Line Items]
Total depreciation and amortization	288	278	156
Total additions to property and equipment	74	127	123
Corporate
Segment Reporting Information [Line Items]
Total depreciation and amortization	565	598	439
Total additions to property and equipment	$ 219	$ 199	$ 214