Segment Information (Assets by Reportable Segment) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Total assets	$ 45,880	$ 43,417
Operating Segments | Pharmaceutical and Specialty Solutions
Segment Reporting Information [Line Items]
Total assets	30,496	27,615
Operating Segments | Global Medical Products and Distribution
Segment Reporting Information [Line Items]
Total assets	7,357	7,961
Operating Segments | Other Segments
Segment Reporting Information [Line Items]
Total assets	2,692	2,621
Corporate
Segment Reporting Information [Line Items]
Total assets	$ 5,335	$ 5,220