REVENUE RECOGNITION Revenue by Nature (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Total Revenues	$ 10,540	$ 6,007	$ 31,450	$ 18,200
Net product sales [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	10,197	5,768	30,555	17,512
Other revenues [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	159	96	443	270
Collaborative Arrangement [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	2,300	2,607	7,492	7,830
Collaborative Arrangement [Member] | Net product sales [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	2,116	2,464	7,040	7,412
Collaborative Arrangement [Member] | Collaborative Arrangement [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	$ 184	$ 143	$ 452	$ 418