DIVESTITURES, LICENSING AND OTHER ACQUISITIONS - Divestitures (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Business Acquisition [Line Items]
Net Proceeds	$ 188	$ 188		$ 408	$ 585
Divestiture (Gains)/Losses	0	0		0	(211)
Royalty Income	(218)	(221)		(406)	(392)
Diabetes business
Business Acquisition [Line Items]
Net Proceeds	185	185		401	357
Divestiture (Gains)/Losses	0	0		0	0
Royalty Income	(218)	(220)		(406)	(390)
Mature products and other
Business Acquisition [Line Items]
Net Proceeds	3	3		7	228
Divestiture (Gains)/Losses	0	0		0	(211)
Royalty Income	$ 0	$ (1)		$ 0	$ (2)
Mature products and other | Cheplapharm
Business Acquisition [Line Items]
Net Proceeds			$ 221
Divestiture (Gains)/Losses			$ (211)