Segment Information (Assets by Reportable Segment) (Details) - USD ($) $ in Millions	Mar. 31, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Total assets	$ 49,871	$ 45,121
Operating Segments | Pharmaceutical and Specialty Solutions
Segment Reporting Information [Line Items]
Total assets	35,734	29,149
Operating Segments | Global Medical Products and Distribution
Segment Reporting Information [Line Items]
Total assets	7,201	7,047
Operating Segments | Other Segments
Segment Reporting Information [Line Items]
Total assets	2,726	2,606
Corporate
Segment Reporting Information [Line Items]
Total assets	$ 4,210	$ 6,319