Segment Information (Segment Profit by Reportable Segment) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total operating earnings	$ 668	$ 568
Cost of Product and Service Sold	61,690	50,375
Selling, General and Administrative Expense	1,461	1,277
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total operating earnings	879	642
Cost of Product and Service Sold	61,711	50,397
Selling, General and Administrative Expense	1,440	1,260
Costs and Expenses	63,151	51,657
Operating Segments | Pharmaceutical and Specialty Solutions
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total operating earnings	667	530
Cost of Product and Service Sold	57,857	46,909
Selling, General and Administrative Expense	681	551
Costs and Expenses	58,538	47,460
Operating Segments | GMPD
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total operating earnings	46	8
Cost of Product and Service Sold	2,633	2,604
Selling, General and Administrative Expense	505	511
Costs and Expenses	3,138	3,115
Operating Segments | Other Operating Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total operating earnings	166	104
Cost of Product and Service Sold	1,221	884
Selling, General and Administrative Expense	254	198
Costs and Expenses	1,475	1,082
Corporate
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total operating earnings	$ (211)	$ (74)