FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Fair Value Measurement) (Details) (USD $) In Millions, unless otherwise specified															6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Certificates of Deposit [Member]	Dec. 31, 2013 Certificates of Deposit [Member]	Jun. 30, 2014 Commercial Paper [Member]	Jun. 30, 2014 Corporate Debt Securities [Member]	Dec. 31, 2013 Corporate Debt Securities [Member]	Jun. 30, 2014 Equity Funds [Member]	Dec. 31, 2013 Equity Funds [Member]	Jun. 30, 2014 Fixed Income Funds [Member]	Dec. 31, 2013 Fixed Income Funds [Member]	Jun. 30, 2014 Auction Rate Securities [Member]	Dec. 31, 2013 Auction Rate Securities [Member]	Jun. 30, 2014 Equity Securities [Member]	Jun. 30, 2014 Written Option Liability [Member]	Jun. 30, 2013 Written Option Liability [Member]	Jun. 30, 2014 Contingent Consideration Liability [Member]	Dec. 31, 2013 Contingent Consideration Liability [Member]	Jun. 30, 2013 Contingent Consideration Liability [Member]	Dec. 31, 2012 Contingent Consideration Liability [Member]	Jun. 30, 2013 Auction Rate Securities And Floating Rate Securities [Member]	Dec. 31, 2012 Auction Rate Securities And Floating Rate Securities [Member]	Jun. 30, 2014 Auction Rate Securities [Member]	Jun. 30, 2014 Interest Rate Swap Derivatives [Member]	Dec. 31, 2013 Interest Rate Swap Derivatives [Member]	Jun. 30, 2014 Foreign Exchange Forward [Member]	Dec. 31, 2013 Foreign Exchange Forward [Member]	Jun. 30, 2014 Written Option Liability [Member]	Dec. 31, 2013 Written Option Liability [Member]	Jun. 30, 2014 Contingent Consideration Liability [Member]	Dec. 31, 2013 Contingent Consideration Liability [Member]	Jun. 30, 2014 Fair Value, Inputs, Level 1 [Member] Equity Securities [Member]	Jun. 30, 2014 Fair Value, Inputs, Level 2 [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 2 [Member]	Jun. 30, 2014 Fair Value, Inputs, Level 2 [Member] Certificates of Deposit [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 2 [Member] Certificates of Deposit [Member]	Jun. 30, 2014 Fair Value, Inputs, Level 2 [Member] Commercial Paper [Member]	Jun. 30, 2014 Fair Value, Inputs, Level 2 [Member] Corporate Debt Securities [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 2 [Member] Corporate Debt Securities [Member]	Jun. 30, 2014 Fair Value, Inputs, Level 2 [Member] Equity Funds [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 2 [Member] Equity Funds [Member]	Jun. 30, 2014 Fair Value, Inputs, Level 2 [Member] Fixed Income Funds [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 2 [Member] Fixed Income Funds [Member]	Jun. 30, 2014 Fair Value, Inputs, Level 2 [Member] Interest Rate Swap Derivatives [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 2 [Member] Interest Rate Swap Derivatives [Member]	Jun. 30, 2014 Fair Value, Inputs, Level 2 [Member] Foreign Exchange Forward [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 2 [Member] Foreign Exchange Forward [Member]	Jun. 30, 2014 Fair Value, Inputs, Level 3 [Member] Auction Rate Securities [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Auction Rate Securities [Member]	Jun. 30, 2014 Fair Value, Inputs, Level 3 [Member] Written Option Liability [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Written Option Liability [Member]	Jun. 30, 2014 Fair Value, Inputs, Level 3 [Member] Contingent Consideration Liability [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Contingent Consideration Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	$ 3,749	$ 3,201																															$ 3,749	$ 3,201
Available-for-sale Securities	6,718	4,566	1,813	122	200	4,640	4,432					12	12	53																		53			1,813	122	200	4,640	4,432									12	12
Other Marketable Securities, Current								94	74	10	46																													94	74	10	46
Derivative asset																								111	64	22	50																	111	64	22	50
Derivative liabilities																								(3)	(27)	(24)	(35)	(198)	(162)	(8)	(8)													(3)	(27)	(24)	(35)			(198)	(162)	(8)	(8)
Accrued expenses	2,204	2,152																										69	18
Other liabilities	624	625																										129	144
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value at January 1, Asset													12								31	31	12
Fair Value at January 1 , Liability															(162)	(18)	(8)	(8)	(8)	(8)
Additons from new collaborations																(144)
Changes in Fair Value Of The Option Liability															(36)
Fair value at June 30, Asset													12								31	31	12
Fair Value at June 30, Liability															$ (198)	$ (162)	$ (8)	$ (8)	$ (8)	$ (8)