BUSINESS SEGMENTS (Revenues by Geographic Area of Customer) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Revenues by geographic area of customer [Line Items]
Revenues	$ 4,513	$ 4,417	$ 4,475	$ 4,605	$ 4,162	$ 5,195	$ 5,814	$ 5,709	$ 18,010	[1]	$ 20,880	[1]	$ 18,982	[1]
United States [Member]
Revenues by geographic area of customer [Line Items]
Revenues									6,285	[1]	7,176	[1]	5,295	[1]
Japan [Member]
Revenues by geographic area of customer [Line Items]
Revenues									2,181	[1]	2,501	[1]	3,428	[1]
Indonesia [Member]
Revenues by geographic area of customer [Line Items]
Revenues									2,054	[1]	2,266	[1]	2,266	[1]
Spain [Member]
Revenues by geographic area of customer [Line Items]
Revenues									1,581	[1]	1,643	[1]	1,483	[1]
Switzerland [Member]
Revenues by geographic area of customer [Line Items]
Revenues									731	[1]	1,219	[1]	1,063	[1]
Chile [Member]
Revenues by geographic area of customer [Line Items]
Revenues									704	[1]	741	[1]	759	[1]
China [Member]
Revenues by geographic area of customer [Line Items]
Revenues									579	[1]	942	[1]	795	[1]
Korea [Member]
Revenues by geographic area of customer [Line Items]
Revenues									525	[1]	561	[1]	745	[1]
Others [Member]
Revenues by geographic area of customer [Line Items]
Revenues									$ 3,370	[1]	$ 3,831	[1]	$ 3,148	[1]

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