FINANCIAL INSTRUMENTS (Fair Value and Gross Unrealized Losses of the Company's Investments) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010
Schedule of Available-for-sale Securities [Line Items]
Temporarily Impaired Securities, Less than 12 Months, Fair Value	$ 234,000,000	[1]	$ 157,000,000	[1]
Temporarily Impaired Securities, Less than 12 Months, Unrealized Losses	(38,000,000)	[1]	(6,000,000)	[1]
Other than temporary impairment write-downs on investments still held	6,000,000		5,000,000
Cost method investments, aggregate cost	179,000,000		171,000,000
Cost method investments, reduction in cost basis due to impairment	0		16,000,000
Fixed Income Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Temporarily Impaired Securities, Less than 12 Months, Fair Value			105,000,000	[1]
Temporarily Impaired Securities, Less than 12 Months, Unrealized Losses			(3,000,000)	[1]
Government Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Temporarily Impaired Securities, Less than 12 Months, Fair Value			62,000,000	[1],[2]
Temporarily Impaired Securities, Less than 12 Months, Unrealized Losses			(2,000,000)	[1],[2]
Corporate Bonds - Investment Grade [Member]
Schedule of Available-for-sale Securities [Line Items]
Temporarily Impaired Securities, Less than 12 Months, Fair Value	44,000,000	[1]	43,000,000	[1]
Temporarily Impaired Securities, Less than 12 Months, Unrealized Losses	(2,000,000)	[1]	(1,000,000)	[1]
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Temporarily Impaired Securities, Less than 12 Months, Fair Value	190,000,000	[1]	52,000,000	[1]
Temporarily Impaired Securities, Less than 12 Months, Unrealized Losses	$ (36,000,000)	[1]	$ (3,000,000)	[1]

[1] Unrealized losses of 12 months or more were less than $1 million.

[2] U.S. Treasury obligations, U.S. agency obligations, agency mortgage- backed securities and other municipalities’ obligations.