ACCOUNTING POLICIES AND RECENTLY ISSUED ACCOUNTING STANDARDS - Additional Disclosures of our Significant Expenses Within Research and Development (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of Research and Development Expense [Line Items]
Research and development	$ 11,159	$ 9,299	$ 9,509
Other Research
Schedule of Research and Development Expense [Line Items]
Research and development	1,522	1,557	1,553
Drug Development
Schedule of Research and Development Expense [Line Items]
Research and development	4,495	3,835	3,824
Other
Schedule of Research and Development Expense [Line Items]
Research and development	$ 5,142	$ 3,907	$ 4,132