BUSINESS SEGMENTS (Long Lived Assets by Geographic Area) (Details) - USD ($) $ in Millions		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	[1]	$ 38,795		$ 49,412		$ 51,204
United States [Member]
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	[1]	16,569	[2]	29,468		32,969
Indonesia [Member]
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	[1]	7,701		6,961		5,799
Peru [Member]
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	[1]	8,432		6,848		5,181
DRC [Member]
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	[1]	4,196		4,071		3,994
Chile [Member]
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	[1]	1,387		1,542	[3]	2,699
Other [Member]
Long Lived assets by geographic area of customer [Line Items]
Long-Lived Assets	[1]	$ 510		$ 522		$ 562

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

[2] Decreased from 2014 primarily because of impairment charges related to oil and gas properties (refer to Note 1 for further discussion).

[3] Decreased from 2013 primarily because of the sale of the Candelaria and Ojos del Salado mines.