INCOME TAXES - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets
Foreign net operating loss and other carryforwards	$ 2,017	$ 566
State net operating loss and credit carryforwards	349	329
U.S. Federal capital loss, net operating loss and tax credit	249	236
Milestone payments and license fees	918	1,030
Capitalized research expenditures	2,682	1,573
Other	1,883	1,284
Total deferred tax assets	8,098	5,018
Valuation allowance	(764)	(873)
Deferred tax assets net of valuation allowance	7,334	4,145
Deferred tax liabilities
Acquired intangible assets	(4,052)	(4,362)
Goodwill and other	(852)	(605)
Total deferred tax liabilities	(4,904)	(4,967)
Deferred tax assets/(liabilities), net	2,430
Deferred tax assets/(liabilities), net		(822)
Deferred income taxes assets – non-current	2,768	1,344
Deferred income taxes liabilities – non-current	$ (338)	$ (2,166)