RECEIVABLES (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade receivables	$ 1,812	$ 2,397
Less allowances	(104)	(147)
Net trade receivables	1,708	2,250
Alliance partners receivables	857	1,081
Prepaid and refundable income taxes	319	256
Miscellaneous receivables	199	156
Receivables	3,083	3,743
Reduction in alliance partner receivables and deferred income	1,056	901
Receivables sold on a nonrecourse basis	956	1,077	932
Percent of aggregate total trade receivables due from three pharmaceutical wholesalers	37.00%	55.00%
The number of the largest pharmaceutical wholesalers in the U.S.	3
Allowance for Trade Receivables [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	147	107	103
Provision for bad debt, charge-backs and discounts	832	1,094	864
Bad debts written-off/payments for charge-backs and discounts	(875)	(1,054)	(860)
Balance at end of year	$ 104	$ 147	$ 107