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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
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],[4] 4,706 4,593 4,556
Tenke Fungurume [Member] | Discontinued Operations, Held-for-sale [Member]      
Long Lived assets by geographic area of customer [Line Items]      
Long-Lived Assets [1],[2] $ 4,100 $ 4,000 $ 3,900
[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.
[4] Includes long-lived assets held for sale totaling $4.1 billion at December 31, 2015, $4.0 billion at December 31, 2014, and $3.9 billion at December 31, 2013, associated with discontinued operations. Refer to Note 2 for further discussion.