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LICENSING AGREEMENTS AND ACQUISITIONS - Narrative (Details) - USD ($) $ in Millions |  |  |  | 1 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 29, 2023 | Jul. 06, 2023 | Jan. 17, 2023 | Jan. 31, 2023 | Mar. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Business Acquisition [Line Items] |  |  |  |  |  |  |
Goodwill |  |  |  |  | $ 11,160 | $ 11,183 | $ 11,547
Bausch + Lomb | Johnson & Johnson Vision, Blink Product Line Acquisition |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash consideration paid, asset acquisition |  | $ 107 |  |  |  |  |
Bausch + Lomb | XIIDRA Acquisition |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash consideration paid | $ 1,750 |  |  |  |  |  |
Recognized contingent consideration liability |  |  |  |  | $ 34 |  |
Fair value, consideration transferred | 1,753 |  |  |  |  |  |
Identifiable intangible assets | 1,600 |  |  |  |  |  |
Other assets | 130 |  |  |  |  |  |
Goodwill | $ 23 |  |  |  |  |  |
Bausch + Lomb | AcuFocus, Inc. Acquisition |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash consideration paid |  |  |  | $ 31 |  |  |
Consideration transferred |  |  | $ 35 |  |  |  |
Purchase price, repayment term |  |  | 18 months |  |  |  |
Contingent consideration, liability |  |  | $ 5 |  |  |  |

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