REVENUE RECOGNITION Gross-to-Net Adjustments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Gross to Net Adjustments [Line Items]
Total Revenues	$ 10,540	$ 6,007	$ 31,450	$ 18,200
Gross to Net Adjustments	(5,014)	(3,116)	(13,130)	(8,185)
Prior Period Gross to Net Adjustment Impacted by New Accounting Pronouncement	(25)	12	91	139
Sales Revenue, Gross [Member]
Gross to Net Adjustments [Line Items]
Total Revenues	15,211	8,884	43,685	25,697
Net product sales [Member]
Gross to Net Adjustments [Line Items]
Total Revenues	10,197	5,768	30,555	17,512
Charge-backs and cash discounts [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments	(1,440)	(927)	(4,072)	(2,591)
Medicaid and Medicare rebates [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments	(2,146)	(1,362)	(5,126)	(3,252)
Other rebates, returns, discounts and adjustments [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments	$ (1,428)	$ (827)	$ (3,932)	$ (2,342)