FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Fair Value Measurements) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
Marketable Securities [Line Items]
Cash Equivalents, Fair Value	$ 5,051	$ 3,201
Available-for-sale securities, Fair value	6,203	4,566
Marketable securities, Fair value	6,272	4,686	6,698	6,769	5,392	4,574	4,201	4,420
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value at January 1, Asset	511	536
Unrealized gains	(8)	40
Fair value at December 31, Asset	446	511
Certificates of Deposit [Member]
Marketable Securities [Line Items]
Available-for-sale securities, Fair value	896	122
Corporate Debt Securities [Member]
Marketable Securities [Line Items]
Available-for-sale securities, Fair value	5,259	4,432
Equity Funds [Member]
Marketable Securities [Line Items]
Marketable securities, Fair value	94	74
Fixed Income Funds [Member]
Marketable Securities [Line Items]
Marketable securities, Fair value	11	46
Auction Rate Securities [Member]
Marketable Securities [Line Items]
Available-for-sale securities, Fair value	12	12
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value at December 31, Asset	12	12
Equity investments [Member]
Marketable Securities [Line Items]
Available-for-sale securities, Fair value	36
Auction Rate Securities And Floating Rate Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value at January 1, Asset		31
Unrealized gains		1
Sales		(20)
Interest Rate Swap [Member]
Marketable Securities [Line Items]
Total derivatives at fair value, assets	46	64
Total derivatives at fair value, liabilities	(3)	(27)
Foreign Exchange Forward [Member]
Marketable Securities [Line Items]
Total derivatives at fair value, assets	118	50
Total derivatives at fair value, liabilities		(35)
Written Option Liability [Member]
Marketable Securities [Line Items]
Total derivatives at fair value, liabilities	(198)	(162)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value at January 1, Liability	(162)	(18)
Additions from new alliances		(144)
Changes in fair value	(36)
Fair value at December 31, Liability	198	(162)
Contingent Consideration Liability [Member]
Marketable Securities [Line Items]
Total derivatives at fair value, liabilities	(8)	(8)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value at January 1, Liability									(8)
Fair value at December 31, Liability	(8)	(8)							(8)
Fair Value Level 1 [Member] | Equity investments [Member]
Marketable Securities [Line Items]
Available-for-sale securities, Fair value	36
Fair Value Level 2 [Member]
Marketable Securities [Line Items]
Cash Equivalents, Fair Value	5,051	3,201
Fair Value Level 2 [Member] | Certificates of Deposit [Member]
Marketable Securities [Line Items]
Available-for-sale securities, Fair value	896	122
Fair Value Level 2 [Member] | Corporate Debt Securities [Member]
Marketable Securities [Line Items]
Available-for-sale securities, Fair value	5,259	4,432
Fair Value Level 2 [Member] | Equity Funds [Member]
Marketable Securities [Line Items]
Marketable securities, Fair value	94	74
Fair Value Level 2 [Member] | Fixed Income Funds [Member]
Marketable Securities [Line Items]
Marketable securities, Fair value	11	46
Fair Value Level 2 [Member] | Interest Rate Swap [Member]
Marketable Securities [Line Items]
Total derivatives at fair value, assets	46	64
Total derivatives at fair value, liabilities	(3)	(27)
Fair Value Level 2 [Member] | Foreign Exchange Forward [Member]
Marketable Securities [Line Items]
Total derivatives at fair value, assets	118	50
Total derivatives at fair value, liabilities		(35)
Fair Value Level 3 [Member] | Auction Rate Securities [Member]
Marketable Securities [Line Items]
Available-for-sale securities, Fair value	12	12
Fair Value Level 3 [Member] | Written Option Liability [Member]
Marketable Securities [Line Items]
Total derivatives at fair value, liabilities	(198)	(162)
Fair Value Level 3 [Member] | Contingent Consideration Liability [Member]
Marketable Securities [Line Items]
Total derivatives at fair value, liabilities	$ (8)	$ (8)