BUSINESS SEGMENTS (Long Lived Assets by Geographic Area) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	$ 24,589	[1]	$ 21,697	[1]	$ 19,205	[1]
United States [Member]
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	8,689	[1]	7,899	[1]	7,101	[1]
Indonesia [Member]
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	5,127	[1]	4,469	[1]	3,475	[1]
Democratic Republic of Congo [Member]
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	3,926	[1]	3,497	[1]	3,220	[1]
Peru [Member]
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	3,933	[1]	3,265	[1]	3,203	[1]
Chile [Member]
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	2,587	[1]	2,242	[1]	1,892	[1]
Spain [Member]
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	231	[1]	257	[1]	266	[1]
Others [Member]
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	$ 96	[1]	$ 68	[1]	$ 48	[1]

[1] Long-lived assets exclude deferred tax assets and intangible assets.