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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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