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Income Taxes (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Jun. 30, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Jun. 30, 2023 | Jun. 30, 2022
Income Taxes |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation, Percent | 5.40% | 105.00% |  | 30.00% | 153.10% |  |
Goodwill, Impairment Loss |  |  |  | $ 863 |  |  |
Income Tax Expense (Benefit) | $ (7) | $ (1,022) |  | (8) | $ (925) |  |
Unrecognized tax benefits | 1,000 |  |  | 1,000 |  |  | $ 943
Unrecognized tax benefits that would impact effective tax rate | 889 |  |  | 889 |  |  | 858
Unrecognized tax benefits, interest and penalties accrued | 56 |  |  | 56 |  |  | 48
Medical Unit |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |
Goodwill, Impairment Loss |  |  |  | 863 |  |  |
Forecast [Member] | Medical Unit Goodwill Impairment [Member] |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |
Income Tax Expense (Benefit) |  |  |  |  |  | $ 68 |
Forecast [Member] | Medical Unit Goodwill Impairment [Member] | Subsequent Event |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |
Income Tax Expense (Benefit) |  |  | $ 140 |  |  |  |
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 | 120 |  |  | 120 |  |  |
CareFusion [Member] |  |  |  |  |  |  |
Income Taxes |  |  |  |  |  |  |
Indemnification Receivable | $ 78 |  |  | $ 78 |  |  | $ 75

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