Segment Information (Assets by Reportable Segment) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Jun. 30, 2024
Segment Reporting Information [Line Items]
Total assets	$ 47,002	$ 45,121
Operating Segments | Pharmaceutical and Specialty Solutions
Segment Reporting Information [Line Items]
Total assets	32,125	29,149
Operating Segments | Global Medical Products and Distribution
Segment Reporting Information [Line Items]
Total assets	7,055	7,047
Operating Segments | Other Segments
Segment Reporting Information [Line Items]
Total assets	2,720	2,606
Corporate
Segment Reporting Information [Line Items]
Total assets	$ 5,102	$ 6,319