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LICENSING AGREEMENTS AND ACQUISITIONS - Narrative (Details) $ in Millions | 1 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 31, 2025 USD ($) therapy | Dec. 31, 2024 USD ($) | Dec. 31, 2025 USD ($) | Jun. 30, 2025 USD ($) | Dec. 31, 2024 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
Business Combination [Line Items] |  |  |  |  |  |  |
Current portion included in Accrued and other current liabilities |  |  |  | $ 39 |  | $ 39 |
Goodwill |  | $ 11,087 |  | 11,298 | $ 11,087 |  | $ 11,183
DURECT | Bausch + Lomb | Forecast | Subsequent Event |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Cash consideration paid |  |  | $ 63 |  |  |  |
Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount |  |  | $ 350 |  |  |  |
Business Combination, Contingent Consideration, Term |  |  | 10 years |  |  |  |
Whitecap Biosciences Acquisition | Bausch + Lomb |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Cash consideration paid | $ 28 |  |  | $ 28 |  |  |
Number of innovative therapies | therapy | 2 |  |  |  |  |  |
Elios Vision | Bausch + Lomb |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Cash consideration paid |  | 99 |  |  |  |  |
Business combination, contingent consideration, liability |  | 89 |  |  | 89 |  |
Current portion included in Accrued and other current liabilities |  | 11 |  |  | 11 |  |
Business combination consideration transferred |  |  |  |  | 188 |  |
Business combination, recognized asset acquired, identifiable intangible asset, excluding goodwill |  | 177 |  |  | 177 |  |
Business combination, recognized asset acquired, other asset, current |  | 16 |  |  | 16 |  |
Goodwill |  | $ 27 |  |  | $ 27 |  |

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