FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Available-for-Sale) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities, Amortized Cost	$ 4,753				$ 6,524
Marketable Securities, Unrealized Gain in Accumulated OCI	10				25
Marketable Securities, Gross Unrealized Loss in Accumulated OCI	(15)				(47)
Available-for-sale securities	4,748				6,502
Total securities	4,856				6,605
Marketable securities	4,832	$ 5,163	$ 4,998	$ 5,352	6,545	$ 6,065	$ 5,909	$ 5,592
Current marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities	2,113				1,885
Non-current marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities	2,719				4,660
Other assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities	24				60
Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities, Amortized Cost	27				804
Available-for-sale securities	27				804
Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities, Amortized Cost	750
Available-for-sale securities	750
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities, Amortized Cost	3,945				5,646
Marketable Securities, Unrealized Gain in Accumulated OCI	10				15
Marketable Securities, Gross Unrealized Loss in Accumulated OCI	(8)				(23)
Available-for-sale securities	3,947				5,638
Equity investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities, Amortized Cost	31				74
Marketable Securities, Unrealized Gain in Accumulated OCI					10
Marketable Securities, Gross Unrealized Loss in Accumulated OCI	(7)				(24)
Available-for-sale securities	24				60
Equity and fixed income funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$ 108				$ 103