REVENUE RECOGNITION Revenue by Nature (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Total Revenues	$ 11,703	$ 10,129	$ 22,776	$ 20,910
Net product sales [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	11,405	9,817	22,203	20,358
Other revenues [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	139	149	272	284
Collaborative Arrangement [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	2,964	2,364	5,988	5,192
Collaborative Arrangement [Member] | Net product sales [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	2,805	2,201	5,687	4,924
Collaborative Arrangement [Member] | Collaborative Arrangement [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	$ 159	$ 163	$ 301	$ 268