FINANCIAL INSTRUMENTS (Marketable Securities) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Marketable Securities [Line Items]
Marketable Securities, Current	$ 978		$ 1,173
Marketable Securities, Noncurrent	3,223		3,523
Marketable Securities, Amortized Cost	4,170		4,617
Marketable Securities, Unrealized Gain in Accumulated OCI	38		75
Marketable Securities, Unrealized Loss in Accumulated OCI	(17)		(1)
Gain/(Loss) in Income	10		5
Marketable Securities, Fair Value	4,201		4,696
Cash Equivalents, Fair Value	1,472		1,288
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value at January 1	31	110	110
Sales		(81)
Fair value at June 30	31	29	31
Certificates of Deposit [Member]
Marketable Securities [Line Items]
Marketable Securities, Amortized Cost	123		34
Marketable Securities, Fair Value	123		34
Corporate Debt Securities [Member]
Marketable Securities [Line Items]
Marketable Securities, Amortized Cost	3,919		4,305
Marketable Securities, Unrealized Gain in Accumulated OCI	35		72
Marketable Securities, Unrealized Loss in Accumulated OCI	(16)
Marketable Securities, Fair Value	3,938		4,377
Available For Sale Securities Maturities After One Through Five Years, Fair Value	3,212
US Treasury Securities [Member]
Marketable Securities [Line Items]
Marketable Securities, Amortized Cost			150
Marketable Securities, Fair Value			150
Equity Funds [Member]
Marketable Securities [Line Items]
Marketable Securities, Amortized Cost	52		52
Gain/(Loss) in Income	11		5
Marketable Securities, Fair Value	63		57
Fixed Income Funds [Member]
Marketable Securities [Line Items]
Marketable Securities, Amortized Cost	47		47
Gain/(Loss) in Income	(1)
Marketable Securities, Fair Value	46		47
Auction Rate Securities [Member]
Marketable Securities [Line Items]
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	11
Auction Rate and Floating Rate Securities [Member]
Marketable Securities [Line Items]
Marketable Securities, Amortized Cost	29		29
Marketable Securities, Unrealized Gain in Accumulated OCI	3		3
Marketable Securities, Unrealized Loss in Accumulated OCI	(1)		(1)
Marketable Securities, Fair Value	31		31
Fair Value Level 1 [Member]
Marketable Securities [Line Items]
Marketable Securities, Fair Value			150
Fair Value Level 1 [Member] \| US Treasury Securities [Member]
Marketable Securities [Line Items]
Marketable Securities, Fair Value			150
Fair Value Level 2 [Member]
Marketable Securities [Line Items]
Marketable Securities, Fair Value	4,170		4,515
Fair Value Level 2 [Member] \| Certificates of Deposit [Member]
Marketable Securities [Line Items]
Marketable Securities, Fair Value	123		34
Fair Value Level 2 [Member] \| Corporate Debt Securities [Member]
Marketable Securities [Line Items]
Marketable Securities, Fair Value	3,938		4,377
Fair Value Level 2 [Member] \| Equity Funds [Member]
Marketable Securities [Line Items]
Marketable Securities, Fair Value	63		57
Fair Value Level 2 [Member] \| Fixed Income Funds [Member]
Marketable Securities [Line Items]
Marketable Securities, Fair Value	46		47
Fair Value Level 3 [Member]
Marketable Securities [Line Items]
Marketable Securities, Fair Value	31		31
Fair Value Level 3 [Member] \| Auction Rate and Floating Rate Securities [Member]
Marketable Securities [Line Items]
Marketable Securities, Fair Value	$ 31		$ 31

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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Sales that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

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