PROPERTY, PLANT, EQUIPMENT AND MINING DEVELOPMENT COSTS, NET (Schedule of PPE) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	$ 40,251	$ 37,484
Accumulated depreciation, depletion and amortization	(12,742)	(11,264)
Property, plant, equipment and mining development costs, net	27,509	26,220
Proven and probable reserves [Member]
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	4,663	4,651
Value beyond proven and probable reserves (VBPP) [Member]
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	1,037	1,042
Mining development and other [Member]
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	5,184	4,712
Buildings and infrastructure [Member]
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	7,451	5,100
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	13,759	11,251
Mobile equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	4,158	3,926
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	$ 3,999	$ 6,802