FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Available-for-Sale) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, current	$ 1,885	$ 1,864
Marketable securities, noncurrent	4,660	4,408
Marketable Securities, Amortized Cost	6,524	6,156
Marketable Securities, Unrealized Gain in Accumulated OCI	25	55
Marketable Securities, Gross Unrealized Loss in Accumulated OCI	(47)	(8)
Available-for-sale securities	6,502	6,203
Available For Sale Securities - Marketable Securities	1,782	1,759
Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities, Amortized Cost	804	896
Available-for-sale securities	804	896
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities, Amortized Cost	5,646	5,237
Marketable Securities, Unrealized Gain in Accumulated OCI	15	30
Marketable Securities, Gross Unrealized Loss in Accumulated OCI	(23)	(8)
Available-for-sale securities	5,638	5,259
Auction Rate Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities, Amortized Cost		9
Marketable Securities, Unrealized Gain in Accumulated OCI		3
Available-for-sale securities		12
Equity investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities, Amortized Cost	74	14
Marketable Securities, Unrealized Gain in Accumulated OCI	10	22
Marketable Securities, Gross Unrealized Loss in Accumulated OCI	(24)
Available-for-sale securities	$ 60	$ 36