ACCOUNTING POLICIES AND RECENTLY ISSUED ACCOUNTING STANDARDS - Acquired IPRD by Type of Transaction (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Acquired IPRD	$ 13,373	$ 913	$ 815
Alliance revenues
Property, Plant and Equipment [Line Items]
Alliance (Note 3)	880	55	100
In-license and other arrangements (Note 4)	371	858	715
Acquired IPRD	13,373	913	815
Alliance revenues | Acquired IPRD
Property, Plant and Equipment [Line Items]
Acquisitions (Note 4)	$ 12,122	$ 0	$ 0