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Income Taxes (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018 | Jun. 30, 2018
Income Taxes |  |  |  |  |
Remeasurement Deferred Tax Assets and Liabilities expense (benefit) |  | $ (18) |  | $ (952) |
Foreign income, transition tax |  |  |  | $ 41 |
Unrecognized tax benefits | $ 436 |  | $ 436 |  | $ 423
Unrecognized tax benefits that would impact effective tax rate | 275 |  | 275 |  | 262
Unrecognized tax benefits, interest and penalties accrued | $ 116 |  | $ 116 |  | 110
Effective Income Tax Rate Reconciliation, Percent | 20.00% | 45.10% | 22.60% | (48.60%) |
Net Discrete Tax Benefit (Expense) | $ 12 | $ (18) | $ 50 | $ (12) |
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 |  |
Patient Recovery Business |  |  |  |  |
Income Taxes |  |  |  |  |
Indemnification Receivable | 24 |  | 24 |  | 21
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] |  |  |  |  |
Income Taxes |  |  |  |  |
Disposal Group, Including Discontinued Operation, Provisional Tax Expense |  |  |  | $ 57 |
CareFusion [Member] |  |  |  |  |
Income Taxes |  |  |  |  |
Indemnification Receivable | $ 159 |  | $ 159 |  | $ 151

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