RESTRUCTURING - Schedule of Restructuring Reserve by Type of Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	$ 148	$ 100	$ 96
Restructuring charges	156	460	156
Foreign currency translation and other	(4)	6	(1)
Payments	(199)	(418)	(151)
Restructuring reserve, end of period	101	148	100
Restructuring reserve, accrual adjustment	19	10	4
Provision for restructuring	169	530	301
Previously Reported
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	148	100	99
Restructuring reserve, end of period		148	100
Revision of Prior Period, Adjustment
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	0	0	(3)
Restructuring reserve, end of period		0	0
Accelerated Stock Based Compensation | Celgene Acquisition Plan
Restructuring Reserve [Roll Forward]
Provision for restructuring	$ 13	$ 70	$ 145