Segment Information (Assets by Reportable Segment) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Jun. 30, 2023
Segment Reporting Information [Line Items]
Total assets	$ 46,573	$ 43,417
Operating Segments | Pharmaceutical
Segment Reporting Information [Line Items]
Total assets	31,018	28,077
Operating Segments | Medical
Segment Reporting Information [Line Items]
Total assets	9,817	10,130
Corporate
Segment Reporting Information [Line Items]
Total assets	$ 5,738	$ 5,210