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Income Taxes Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Jun. 30, 2022 | Jun. 30, 2021
Income Taxes |  |  |  |
Income Tax Expense (Benefit) | $ (97) | $ 410 |  |
Effective Income Tax Rate Reconciliation, Percent | 26.30% | 61.80% |  |
Unrecognized tax benefits | $ 931 |  |  | $ 932
Unrecognized tax benefits that would impact effective tax rate | 848 |  |  | 849
Unrecognized tax benefits, interest and penalties accrued | 51 |  |  | 49
Cordis Divestiture [Member] |  |  |  |
Income Taxes |  |  |  |
Discontinued Operation, Tax Effect of Discontinued Operation | 9 |  |  |
Forecast [Member] | Cordis Divestiture [Member] |  |  |  |
Income Taxes |  |  |  |
Discontinued Operation, Tax Effect of Discontinued Operation |  |  | $ 38 |
Minimum |  |  |  |
Income Taxes |  |  |  |
Estimated range of decrease in unrecognized tax benefits within the next 12 months | 0 |  |  |
Maximum |  |  |  |
Income Taxes |  |  |  |
Estimated range of decrease in unrecognized tax benefits within the next 12 months | $ 20 |  |  |
Federal | Minimum |  |  |  |
Income Taxes |  |  |  |
Open Tax Year | 2015 |  |  |
Federal | Maximum |  |  |  |
Income Taxes |  |  |  |
Open Tax Year | 2020 |  |  |
Total Opioid Litigation [Member] |  |  |  |
Income Taxes |  |  |  |
Income Tax Expense (Benefit) |  | $ (450) |  | (228)
Unrecognized tax benefits |  | 34 |  | 219
Litigation Charges |  | $ 1,020 |  |
CareFusion [Member] |  |  |  |
Income Taxes |  |  |  |
Indemnification receivable | $ 72 |  |  | 72
Patient Recovery Business [Member] |  |  |  |
Income Taxes |  |  |  |
Indemnification receivable | $ 12 |  |  | $ 12

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