Segment Information Disaggregated Revenue Within Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 54,763	$ 49,603
Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	54,766	49,606
Operating Segments | Pharmaceutical
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	51,006	45,828
Operating Segments | Pharmaceutical | Nuclear Precision Health Services [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	324	281
Operating Segments | Pharmaceutical | Pharmaceutical Distribution and Specialty [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	50,682	45,547
Operating Segments | Medical
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	3,760	3,778
Operating Segments | Medical | Medical distribution and products [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	3,076	3,140
Corporate
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ (3)	$ (3)