ACCOUNTING POLICIES AND RECENTLY ISSUED ACCOUNTING STANDARDS - Acquired IPRD By Type of Transaction (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Acquired IPRD	$ 913	$ 815	$ 1,159
Alliance revenues
Property, Plant and Equipment [Line Items]
Alliance (Note 3)	55	100	730
In-license arrangements and other (Note 4)	858	715	429
Acquired IPRD	$ 913	$ 815	$ 1,159