REVENUE RECOGNITION Gross-to-Net Adjustments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Gross to Net Adjustments [Line Items]
Total Revenues	$ 10,129	$ 6,273	$ 20,910	$ 12,193
Gross to Net Adjustments	(3,971)	(2,788)	(8,116)	(5,069)
Prior Period Gross to Net Adjustment Impacted by New Accounting Pronouncement	44	49	116	127
Sales Revenue, Gross [Member]
Gross to Net Adjustments [Line Items]
Total Revenues	13,788	8,819	28,474	16,813
Net product sales [Member]
Gross to Net Adjustments [Line Items]
Total Revenues	9,817	6,031	20,358	11,744
Charge-backs and cash discounts [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments	(1,292)	(890)	(2,632)	(1,664)
Medicaid and Medicare rebates [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments	(1,482)	(1,090)	(2,980)	(1,890)
Other rebates, returns, discounts and adjustments [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments	$ (1,197)	$ (808)	$ (2,504)	$ (1,515)