BUSINESS SEGMENTS (Revenues by Geographic Area of Customer) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Revenues by geographic area of customer [Line Items]
Revenues	$ 4,162	$ 5,195	$ 5,814	$ 5,709	$ 5,603	$ 5,152	$ 3,864	$ 4,363	$ 20,880	[1]	$ 18,982	[1]	$ 15,040	[1]
United States [Member]
Revenues by geographic area of customer [Line Items]
Revenues									7,176	[1]	5,295	[1]	4,890	[1]
Japan [Member]
Revenues by geographic area of customer [Line Items]
Revenues									2,501	[1]	3,428	[1]	3,093	[1]
Indonesia [Member]
Revenues by geographic area of customer [Line Items]
Revenues									2,266	[1]	2,266	[1]	1,937	[1]
Spain [Member]
Revenues by geographic area of customer [Line Items]
Revenues									1,643	[1]	1,483	[1]	986	[1]
Switzerland [Member]
Revenues by geographic area of customer [Line Items]
Revenues									1,219	[1]	1,063	[1]	379	[1]
China [Member]
Revenues by geographic area of customer [Line Items]
Revenues									942	[1]	795	[1]	496	[1]
India [Member]
Revenues by geographic area of customer [Line Items]
Revenues									878	[1]	690	[1]	566	[1]
Chile [Member]
Revenues by geographic area of customer [Line Items]
Revenues									741	[1]	759	[1]	563	[1]
Korea [Member]
Revenues by geographic area of customer [Line Items]
Revenues									561	[1]	745	[1]	475	[1]
Others [Member]
Revenues by geographic area of customer [Line Items]
Revenues									$ 2,953	[1]	$ 2,458	[1]	$ 1,655	[1]

[1] Revenues are attributed to countries based on the location of the customer.