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ACQUISITIONS AND LICENSING AGREEMENTS - 2025 Acquisitions, Narrative (Details) $ in Millions			1 Months Ended
	Dec. 08, 2025 USD ($)	Jan. 03, 2025 USD ($) therapy	Nov. 30, 2025 USD ($) numberOfAcquisition	Dec. 31, 2025 USD ($)	Dec. 09, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Asset Acquisition And Business Combination [Line Items]
Goodwill				$ 4,758		$ 4,523	$ 4,575	$ 4,507
Manufacturing Equipment
Asset Acquisition And Business Combination [Line Items]
Cash consideration paid	$ 75
Potential future milestone obligation (up to)					$ 35
Goodwill	$ 67
2025 Acquisition
Asset Acquisition And Business Combination [Line Items]
Cash consideration paid			$ 33
Number of acquisitions \| numberOfAcquisition			2,000,000
Goodwill			$ 30
Whitecap Biosciences Acquisition
Asset Acquisition And Business Combination [Line Items]
Upfront payment		$ 28
Number of innovative therapies \| therapy		2