REVENUE RECOGNITION Gross-to-Net Adjustments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Gross to Net Adjustments [Line Items]
Revenues	$ 6,273	$ 5,704	$ 12,193	$ 10,897
Gross to Net Adjustments	(2,788)	(2,048)	(5,069)	(3,777)
Prior Period Gross to Net Adjustment Impacted by New Accounting Pronouncement	49	60	127	110
Sales Revenue, Gross [Member]
Gross to Net Adjustments [Line Items]
Revenues	8,819	7,509	16,813	14,210
Sales Revenue, Net [Member]
Gross to Net Adjustments [Line Items]
Revenues	6,031	5,461	11,744	10,433
Charge-backs and cash discounts [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments	(890)	(663)	(1,664)	(1,246)
Medicaid and Medicare rebates [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments	(1,090)	(765)	(1,890)	(1,322)
Other rebates, returns, discounts and adjustments [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments	$ (808)	$ (620)	$ (1,515)	$ (1,209)