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Commitments, Contingent Liabilities and Litigation Narrative (Details) |  | 3 Months Ended | 5 Months Ended | 12 Months Ended | 40 Months Ended | 164 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 30, 2023 USD ($) lawsuit | Sep. 30, 2024 USD ($) numberOfUSTerritories states Rate | Sep. 30, 2023 USD ($) | Jun. 30, 2023 plaintiff | Sep. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Oct. 31, 2024 USD ($) lawsuit | Jun. 30, 2038 USD ($) | Aug. 31, 2024 USD ($) | Nov. 30, 2023 USD ($) | Oct. 31, 2022 USD ($) | Jul. 31, 2022 USD ($) | Apr. 30, 2018 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) from Litigation Settlement |  | $ 40,000,000 | $ 41,000,000 |  |  |  |  |  |  |  |  |  |  |
Income from Settlements of Class Action Lawsuits |  | 43,000,000 | $ 41,000,000 |  |  |  |  |  |  |  |  |  |  |
Product Liability Lawsuits [Member] | IVC April 2023 Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Claims Settled, Number | lawsuit | 4,375 |  |  |  |  |  |  |  |  |  |  |  |  |
Product Liability Lawsuits [Member] | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency Accrual |  | 289,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Total Opioid Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
litigation settlement liability recorded |  | 5,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Estimated Litigation Liability, Current |  | $ 789,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Litigation Settlement, Loss |  |  |  |  |  | $ 340,000,000 |  |  |  |  |  |  |  |
Income As A Result Of Prepayments |  |  |  |  |  | 105,000,000 |  |  |  |  |  |  |  |
Loss Contingency Accrual, Period Increase (Decrease) |  |  |  |  |  | 344,000,000 |  |  |  |  |  |  |  |
Opioid Lawsuits [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settling States | states |  | 48 |  |  |  |  |  |  |  |  |  |  |  |
Settling U.S Territories | numberOfUSTerritories |  | 5 |  |  |  |  |  |  |  |  |  |  |  |
Percentage Settling Subdivisions [Line Items] | Rate |  | 99.00% |  |  |  |  |  |  |  |  |  |  |  |
Insurance Recoveries |  | $ 9,000,000 |  |  |  | 34,000,000 |  |  |  |  |  |  |  |
Opioid Lawsuits [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for Legal Settlements |  |  |  |  |  |  |  | $ 1,900,000,000 | $ 4,400,000,000 |  |  |  |  |
Opioid Lawsuits [Member] | WEST VIRGINIA |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Estimate of Possible Loss |  |  |  |  |  |  |  |  |  |  |  |  | $ 124,000,000 |
Opioid Lawsuits [Member] | 921150 American Indian and Alaska Native Tribal Governments |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Estimate of Possible Loss |  |  |  |  |  |  |  |  |  |  |  | $ 136,000,000 |  |
Opioid Lawsuits [Member] | ALABAMA |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Litigation Settlement, Loss |  |  |  |  |  | $ 22,000,000 |  |  |  |  |  |  |  |
Loss Contingency, Estimate of Possible Loss |  |  |  |  |  |  |  |  |  |  | $ 123,000,000 |  |  |
Opioid Lawsuits [Member] | City of Baltimore |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Estimate of Possible Loss |  |  |  |  |  |  |  |  |  | $ 153,000,000 |  |  |  |
Opioid Lawsuits [Member] | Private Parties [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Lawsuits, Number | lawsuit |  |  |  |  |  |  |  | 367 |  |  |  |  |  |
Opioid Lawsuits [Member] | Private Parties [Member] | GEORGIA |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs | plaintiff |  |  |  | 21 |  |  |  |  |  |  |  |  |  |
Opioid Lawsuits [Member] | Class Action Lawsuits [Member] | Private Parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Estimate of Possible Loss |  | $ 213,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Opioid Lawsuits [Member] | Class Action Lawsuits [Member] | Private Parties [Member] | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Lawsuits, Number | lawsuit |  |  |  |  |  |  |  | 98 |  |  |  |  |  |
Product Liability Lawsuits [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency Accrual, Period Increase (Decrease) |  |  |  |  |  |  | $ 103,000,000 |  |  |  |  |  |  |
Product Liability Lawsuits [Member] | IVC April 2023 Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Estimate of Possible Loss | $ 275,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency Accrual, Payments |  |  |  |  | $ 275,000,000 |  |  |  |  |  |  |  |  |
New York Opioid Stewardship Act [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate Annual Assessment |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000,000
CVS Health |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Purchase Commitment, Period |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |

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