FINANCIAL INSTRUMENTS (Investments) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Investing Results, Proceeds from sales of available-for-sale securities		$ 535	$ 565	$ 675
Investing Results, Gross realized gains		58	96	99
Investing Results, Gross realized losses		2	14	6
Contractual Maturities of Debt Securities, Within one year, Amortized Cost		33
Contractual Maturities of Debt Securities, One to five years, Amortized Cost		331
Contractual Maturities of Debt Securities, Six to ten years, Amortized Cost		665
Contractual Maturities of Debt Securities, After ten years, Amortized Cost		201
Contractual Maturities of Debt Securities, Total, Amortized Cost		1,230
Contractual Maturities of Debt Securities, Within one year, Fair Value		32
Contractual Maturities of Debt Securities, One to five years, Fair Value		341
Contractual Maturities of Debt Securities, Six to ten years, Fair Value		664
Contractual Maturities of Debt Securities, After ten years, Fair Value		216
Contractual Maturities of Debt Securities, Total, Fair Value		1,253
Held-to-maturity securities		261	3,354
Investments in money market funds		239	1,689
Net unrealized gain (loss) recognized in earnings on trading securities		(6)	(2)	$ 3
Corporate Segment [Member] | impairment of Long-Lived Assets, Other Investments and Other Assets [Member] | Write Down of Certain Venture Capital Investments [Member]
Other Asset Impairment Charges	$ 55	$ 4	$ 55