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Income Taxes (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2024 | Jun. 30, 2024 | Dec. 31, 2023 | Jun. 30, 2024
Income Taxes |  |  |  |  |  |
Effective Income Tax Rate Reconciliation, Percent | 21.40% | 27.90% | 22.20% |  | 23.40% |
Income Tax Expense (Benefit) | $ 110 | $ 143 | $ 234 |  | $ 110 |
Unrecognized tax benefits | 924 |  | 924 | $ 981 |  | $ 981
Unrecognized tax benefits that would impact effective tax rate | 860 |  | 860 | 882 |  | 882
Unrecognized tax benefits, interest and penalties accrued | 74 |  | 74 | 65 |  | 65
Global Medical Products and Distribution |  |  |  |  |  |
Income Taxes |  |  |  |  |  |
Income Tax Expense (Benefit) |  |  |  | $ 66 |  | $ (45)
Minimum |  |  |  |  |  |
Income Taxes |  |  |  |  |  |
Estimated range of decrease in unrecognized tax benefits within the next 12 months | 0 |  | 0 |  |  |
Maximum |  |  |  |  |  |
Income Taxes |  |  |  |  |  |
Estimated range of decrease in unrecognized tax benefits within the next 12 months | $ 20 |  | $ 20 |  |  |

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