REVENUE RECOGNITION Gross-to-Net Adjustments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Gross to Net Adjustments [Line Items]
Total Revenues	$ 11,703	$ 10,129	$ 22,776	$ 20,910
Gross to Net Adjustments	(5,377)	(3,971)	(10,138)	(8,116)
Adjustments for Provisions for Product Sales made in Prior Periods	85	44	302	116
Sales Revenue, Gross [Member]
Gross to Net Adjustments [Line Items]
Total Revenues	16,782	13,788	32,341	28,474
Net product sales [Member]
Gross to Net Adjustments [Line Items]
Total Revenues	11,405	9,817	22,203	20,358
Charge-backs and cash discounts [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments	(1,720)	(1,292)	(3,306)	(2,632)
Medicaid and Medicare rebates [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments	(2,139)	(1,482)	(3,857)	(2,980)
Other rebates, returns, discounts and adjustments [Member]
Gross to Net Adjustments [Line Items]
Gross to Net Adjustments	$ (1,518)	$ (1,197)	$ (2,975)	$ (2,504)