CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES (DETAILS) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash and Cash Equivalents [Abstract]
Cash	$ 28	$ 62
Cash equivalents	94	40
Cash and cash equivalents	122	102	90	164
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	1,119	1,030
Marketable securities, Unrealized Gains	12	12
Marketable securities, Unrealized Losses	(1)	(3)
Marketable securities, Fair Value	1,130	1,039
Cash and marketables securities, Cost Basis	1,241	1,132
Total cash and marketable securities	1,252	1,141
Available-for-sale Securities, Activity [Abstract]
Proceeds from sales and maturities	1,048	956	931
Gross realized gains	9	8	10
Gross realized losses	(2)	(3)	(2)
Other-than-temporary impairments on investments	0	(2)	0
U.S. government and agency securities [Member]
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	271	293
Marketable securities, Unrealized Gains	1	3
Marketable securities, Unrealized Losses	0	0
Marketable securities, Fair Value	272	296
Foreign government bonds [Member]
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	50	24
Marketable securities, Unrealized Gains	1	1
Marketable securities, Unrealized Losses	0	0
Marketable securities, Fair Value	51	25
Asset-back securities [Member]
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	61	58
Marketable securities, Unrealized Gains	1	0
Marketable securities, Unrealized Losses	0	0
Marketable securities, Fair Value	62	58
Mortgage-back securities [Member]
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	137	124
Marketable securities, Unrealized Gains	1	1
Marketable securities, Unrealized Losses	(1)	0
Marketable securities, Fair Value	137	125
Corporate notes and bonds [Member]
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	577	519
Marketable securities, Unrealized Gains	8	7
Marketable securities, Unrealized Losses	0	(3)
Marketable securities, Fair Value	585	523
Municipal securities [Member]
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	23	12
Marketable securities, Unrealized Gains	0	0
Marketable securities, Unrealized Losses	0	0
Marketable securities, Fair Value	$ 23	$ 12