REVENUE GROSS TO NET ADJUSTMENTS (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Gross to Net Adjustments [Line Items]
Revenues	$ 7,945	$ 6,007	$ 6,273	$ 5,920	$ 5,973	$ 5,691	$ 5,704	$ 5,193	$ 26,145	$ 22,561	$ 20,776
Gross to Net Adjustments									(12,032)	(8,593)	(6,241)
Prior Period Gross to Net Adjustment Impacted by New Accounting Pronouncement									132	96	71
Sales Revenue, Gross [Member]
Gross to Net Adjustments [Line Items]
Revenues									37,206	30,174	25,499
Charge-backs and cash discounts [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments									(3,675)	(2,735)	(2,084)
Medicaid and Medicare rebates [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments									(4,941)	(3,225)	(2,086)
Other rebates, returns, discounts and adjustments [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments									$ (3,416)	$ (2,633)	$ (2,071)