REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Total Revenues	$ 11,218	$ 11,624	$ 34,753	$ 34,400
Net product sales
Disaggregation of Revenue [Line Items]
Total Revenues	10,813	11,243	33,606	33,446
Other revenues
Disaggregation of Revenue [Line Items]
Total Revenues	232	187	587	459
Alliance revenues
Disaggregation of Revenue [Line Items]
Total Revenues	2,895	2,646	9,794	8,634
Alliance revenues | Net product sales
Disaggregation of Revenue [Line Items]
Total Revenues	2,722	2,452	9,234	8,139
Alliance revenues | Alliance revenues
Disaggregation of Revenue [Line Items]
Total Revenues	$ 173	$ 194	$ 560	$ 495