REVENUE GROSS TO NET ADJUSTMENTS (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Gross to Net Adjustments [Line Items]
Revenues	$ 5,973	$ 5,691	$ 5,704	$ 5,193	$ 5,449	$ 5,254	$ 5,144	$ 4,929	$ 22,561	$ 20,776	$ 19,427
Gross to Net Adjustments									(8,593)	(6,241)	(4,662)
Prior Period Gross to Net Adjustment Impacted by New Accounting Pronouncement									96	71	155
Sales Revenue, Gross [Member]
Gross to Net Adjustments [Line Items]
Revenues									30,174	25,499	22,364
Sales Revenue, Net [Member]
Gross to Net Adjustments [Line Items]
Revenues									21,581	19,258	17,702
Charge-backs and cash discounts [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments									(2,735)	(2,084)	(1,582)
Medicaid and Medicare rebates [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments									(3,225)	(2,086)	(1,382)
Other rebates, returns, discounts and adjustments [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments									$ (2,633)	$ (2,071)	$ (1,698)