RECEIVABLES (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Account Receivables [Line Items]
Trade receivables	$ 7,660		$ 6,888
Charge-Backs and Cash Discounts	(437)		(391)
Less allowances	(23)		(21)
Net trade receivables	7,200		6,476
Other	1,090		1,209
Receivables	8,290		$ 7,685
Non-U.S. receivables sold on a nonrecourse basis	$ 180	$ 174
Number Of Largest Pharmaceutical Wholesalers	3
Customer Concentration Risk [Member]
Account Receivables [Line Items]
Percent of aggregate total trade receivables due from three pharmaceutical wholesalers	55.00%		50.00%