FINANCIAL INSTRUMENTS (Investments) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financial Instruments [Abstact]
Investing Results, Proceeds from sales of available-for-sale securities	$ 514	$ 764	$ 981
Investing Results, Gross realized gains	40	44	69
Investing Results, Gross realized losses	(11)	(14)	(26)
Contractual Maturities of Debt Securities, Within one year, Amortized Cost	33
Contractual Maturities of Debt Securities, One to five years, Amortized Cost	444
Contractual Maturities of Debt Securities, Six to ten years, Amortized Cost	513
Contractual Maturities of Debt Securities, After ten years, Amortized Cost	192
Contractual Maturities of Debt Securities, Total, Amortized Cost	1,182
Contractual Maturities of Debt Securities, Within one year, Fair Value	34
Contractual Maturities of Debt Securities, One to five years, Fair Value	490
Contractual Maturities of Debt Securities, Six to ten years, Fair Value	568
Contractual Maturities of Debt Securities, After ten years, Fair Value	229
Contractual Maturities of Debt Securities, Total, Fair Value	1,321
Held-to-maturity securities	1,701	1,836
Investments in money market funds	252	1,090
Net unrealized gain recognized in earnings on trading securities	$ 1	$ 13	$ 8

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Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.