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LEGAL PROCEEDINGS AND CONTINGENCIES (Details) $ in Millions | 1 Months Ended |  |  |
--- | --- | --- | --- | ---
May 31, 2025 USD ($) | May 31, 2024 USD ($) | Feb. 28, 2021 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2021 USD ($) | Mar. 31, 2018 lawsuit
Legal Proceedings and Contingencies [Line Items] |  |  |  |  |  |
Obligation to holders of the contingent value rights |  |  |  |  | $ 6,400 |
Accrued liabilities for CERCLA matters |  |  |  | $ 62 |  |
Attorney General of Hawaii v. Bristol-Myers Squibb and Sanofi |  |  |  |  |  |
Legal Proceedings and Contingencies [Line Items] |  |  |  |  |  |
Litigation settlement, amount awarded to other party | $ 350 | $ 458 | $ 417 |  |  |
Attorney General of Hawaii v. Bristol-Myers Squibb and Sanofi | BMS and Sanofi |  |  |  |  |  |
Legal Proceedings and Contingencies [Line Items] |  |  |  |  |  |
Litigation settlement, amount awarded to other party | $ 700 | $ 916 | $ 834 |  |  |
Celgene Securities Class Action |  |  |  |  |  |
Legal Proceedings and Contingencies [Line Items] |  |  |  |  |  |
Putative claims | lawsuit |  |  |  |  |  | 2

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