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Income Taxes (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019
Income Taxes |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation, Percent |  |  |  | (21.20%) | (89.70%) | 2.10% |
Income Tax Expense (Benefit) |  |  |  | $ 163 | $ (289) | $ (79) |
Effective Tax Rate Impact From Certain Foreign Jurisdictions |  |  |  | 21 |  |  |
Undistributed Earnings of Foreign Subsidiaries | $ 833 |  |  | $ 833 |  |  |
Provision at Federal statutory rate |  |  |  | 21.00% | 21.00% | 21.00% |
Federal |  |  |  | $ (30) | $ (539) | $ 822 |
Deferred tax assets on tax credit carryforwards | (778) |  |  | (778) | (805) |  |
Valuation allowance on operating loss carryforwards | 449 |  |  | 449 |  |  |
Unrecognized tax benefits that would impact effective tax rate | 858 |  |  | 858 | 849 | 753 |
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions |  |  |  | 39 | 223 | 78 |
Unrecognized tax benefits | 943 |  |  | 943 | 932 | 998 | $ 456
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities |  |  |  | 12 | 271 | 6 |
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations |  |  |  | 4 | 1 | 3 |
Unrecognized tax benefits, interest and penalties accrued | 48 |  |  | 48 | 49 | 146 |
Unrecognized tax benefits, interest and penalties |  |  |  |  |  | 16 |
Deferred income taxes and other liabilities | 9,299 |  |  | 9,299 | 9,670 |  |
Goodwill, Impairment Loss |  |  |  | 2,084 | 0 | 0 |
Medical Unit |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |
Goodwill, Impairment Loss | 303 | $ 474 | $ 1,300 | 2,100 |  |  |
Net Operating Loss Carryback |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |
Income Tax Expense (Benefit) |  |  |  |  | (424) |  |
Proceeds from Income Tax Refunds |  |  |  | 966 |  |  |
Income Taxes Receivable |  |  |  |  | 974 |  |
Deferred income taxes and other liabilities |  |  |  |  | 700 |  |
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 | 75 |  |  | 75 |  |  |
Federal |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |
Tax credit carryforwards | 275 |  |  | 275 |  |  |
State and Local |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |
Tax credit carryforwards | 3,500 |  |  | 3,500 |  |  |
Foreign |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |
Tax credit carryforwards | 2,200 |  |  | 2,200 |  |  |
Patient Recovery Business [Member] |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |
Amount CareFusion is liable under tax matters agreement in the event amount must be paid to the taxing authority | 1 |  |  | 1 | 12 |  |
CareFusion [Member] |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |
Amount CareFusion is liable under tax matters agreement in the event amount must be paid to the taxing authority | 75 |  |  | 75 | 72 |  |
Total Opioid Litigation [Member] |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |
Estimated Litigation Liability | $ 6,360 |  |  | 6,360 |  |  |
Income Tax Expense (Benefit) |  |  |  |  | (228) | (488) |
Unrecognized tax benefits that would impact effective tax rate |  |  |  |  | 219 | 469 |
Litigation Settlement, Expense |  |  |  |  | $ 1,170 | $ 5,630 |
Medical Unit Goodwill Impairment [Member] |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |
Income Tax Expense (Benefit) |  |  |  | $ (150) |  |  |

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