v3.26.1
Segment Information (Revenue by Reportable Segment) (Details) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Segment Reporting [Line Items]      
Revenue $ 254,248 $ 222,578 $ 226,827
Cost of products sold 244,474 214,410 219,413
Distribution, selling, general, and administrative expenses 6,132 5,382 5,000
Depreciation and amortization 956 790 710
Non-US [Member]      
Segment Reporting [Line Items]      
Revenue 1,705 1,669 1,681
United States      
Segment Reporting [Line Items]      
Revenue 252,639 220,993 225,231
Operating Segments      
Segment Reporting [Line Items]      
Revenue 254,344 222,662 226,912
Cost of products sold 244,568 214,492 219,495
Distribution, selling, general, and administrative expenses 6,028 5,261 4,887
Costs and Expenses 250,596 219,753 224,382
Operating Segments | GMPD      
Segment Reporting [Line Items]      
Revenue 12,719 12,636 12,381
Cost of products sold 10,383 10,470 10,264
Distribution, selling, general, and administrative expenses 2,078 2,031 2,025
Costs and Expenses 12,461 12,501 12,289
Depreciation and amortization 219 212 205
Operating Segments | Other Operating Segment      
Segment Reporting [Line Items]      
Revenue 6,792 5,382 4,512
Cost of products sold 5,044 4,023 3,367
Distribution, selling, general, and administrative expenses 1,041 843 722
Costs and Expenses 6,085 4,866 4,089
Depreciation and amortization 112 88 79
Operating Segments | Other Operating Segment | OptiFreight Logistics      
Segment Reporting [Line Items]      
Revenue 405 324 274
Operating Segments | Other Operating Segment | at-Home Solutions      
Segment Reporting [Line Items]      
Revenue 4,536 3,480 2,869
Operating Segments | Other Operating Segment | Nuclear Precision Health Solutions      
Segment Reporting [Line Items]      
Revenue 1,851 1,578 1,369
Operating Segments | Pharmaceutical and Specialty Solutions      
Segment Reporting [Line Items]      
Revenue 234,833 204,644 210,019
Cost of products sold 229,141 199,999 205,864
Distribution, selling, general, and administrative expenses 2,909 2,387 2,140
Costs and Expenses 232,050 202,386 208,004
Depreciation and amortization 257 185 184
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]      
Segment Reporting [Line Items]      
Revenue (96) (84) (85)
Depreciation and amortization $ 368 $ 305 $ 242