Segment Information (Assets by Reportable Segment) (Details) $ in Millions	12 Months Ended
	Jun. 30, 2025 USD ($) segment	Jun. 30, 2024 USD ($)
Segment Reporting Information [Line Items]
Total assets	$ 53,122	$ 45,121
Number of Reportable Segments | segment	2
Operating Segments | GMPD
Segment Reporting Information [Line Items]
Total assets	$ 6,889	7,047
Operating Segments | Other Operating Segment
Segment Reporting Information [Line Items]
Total assets	4,045	2,606
Operating Segments | Pharmaceutical and Specialty Solutions
Segment Reporting Information [Line Items]
Total assets	37,313	29,149
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Segment Reporting Information [Line Items]
Total assets	$ 4,875	$ 6,319