CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES (DETAILS) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash and Cash Equivalents [Abstract]
Cash	$ 4us-gaap_Cash	$ 9us-gaap_Cash
Money Market Funds, at Carrying Value	103us-gaap_MoneyMarketFundsAtCarryingValue	71us-gaap_MoneyMarketFundsAtCarryingValue
Cash equivalents	103us-gaap_CashEquivalentsAtCarryingValue	71us-gaap_CashEquivalentsAtCarryingValue
Cash and cash equivalents	107	80	122	102
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	1,110	1,250
Marketable securities, Unrealized Gains	3	6
Marketable securities, Unrealized Losses	(3)	(6)
Marketable securities, Fair Value	1,110	1,250
Cash and marketables securities, Cost Basis	1,217	1,330
Total cash and marketable securities	1,217	1,330
Available-for-sale Securities, Activity [Abstract]
Proceeds from sales and maturities	1,092	1,089	1,048
Gross realized gains	4	4	9
Gross realized losses	(2)	(2)	(2)
U.S. government and agency securities
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	166	295
Marketable securities, Unrealized Gains	0	1
Marketable securities, Unrealized Losses	0	(2)
Marketable securities, Fair Value	166	294
Foreign government bonds
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	25	11
Marketable securities, Unrealized Gains	0	0
Marketable securities, Unrealized Losses	0	0
Marketable securities, Fair Value	25	11
Asset-backed securities
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	130	146
Marketable securities, Unrealized Gains	0	0
Marketable securities, Unrealized Losses	0	0
Marketable securities, Fair Value	130	146
Mortgage-backed securities
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	127	144
Marketable securities, Unrealized Gains	0	1
Marketable securities, Unrealized Losses	(1)	(2)
Marketable securities, Fair Value	126	143
Corporate notes and bonds
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	644	628
Marketable securities, Unrealized Gains	3	4
Marketable securities, Unrealized Losses	(2)	(2)
Marketable securities, Fair Value	645	630
Municipal securities
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	18	26
Marketable securities, Unrealized Gains	0	0
Marketable securities, Unrealized Losses	0	0
Marketable securities, Fair Value	$ 18	$ 26

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Total Cash And Marketable Securities, Amortized Cost Basis

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer.

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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The total amount of proceeds received for the sale of securities, categorized neither as held-to-maturity nor trading securities, during the reporting period.

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.

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Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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