REVENUE RECOGNITION Revenue by Nature (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Total Revenues	$ 10,129	$ 6,273	$ 20,910	$ 12,193
Net product sales [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	9,817	6,031	20,358	11,744
Other revenues [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	149	96	284	174
Collaborative Arrangement [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	2,364	2,716	5,192	5,223
Collaborative Arrangement [Member] | Net product sales [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	2,201	2,570	4,924	4,948
Collaborative Arrangement [Member] | Collaborative Arrangement [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	$ 163	$ 146	$ 268	$ 275