The reduction in operating rates expressed as a percentage.

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Amount of value beyond proven and probable reserves transferred to proven and probable reserves in the reporting period.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of interest capitalized during the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Glossary Allowance for Funds Used during Construction
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The cash outflow from the acquisition of a mineral right which is the right to extract a mineral from the earth or to receive payment, in the form of royalty, for the extraction of minerals.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount of increase (decrease) of physical assets used in the normal conduct of business and not intended for resale, from reclassification, impairment, donation, or changes classified as other. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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PROPERTY, PLANT, EQUIPMENT AND MINING DEVELOPMENT COSTS, NET (Schedule of PPE) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 30, 2008	Dec. 31, 2007
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	$ 35,956,000,000	$ 35,398,000,000
Accumulated depreciation, depletion and amortization	(12,737,000,000)	(11,412,000,000)
Property, plant, equipment and mining development costs, net	23,219,000,000	23,986,000,000
Proven and probable reserves [Member]
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	3,863,000,000	3,880,000,000
Transfer From Value Beyond Proven And Probable Reserves To Proven And Probable Reserves	0	0	$ 640,000,000
Value beyond proven and probable reserves (VBPP) [Member]
Property, Plant and Equipment [Line Items]
Payments to Acquire Mineral Rights					$ 1,600,000,000
Property, plant, equipment and mining development costs	559,000,000	559,000,000
Property, Plant and Equipment, Transfers and Changes				$ 485,000,000
Mine development and other
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	5,755,000,000	4,878,000,000
Buildings and infrastructure
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	7,479,000,000	6,964,000,000
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	11,744,000,000	11,558,000,000
Mobile equipment
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	3,725,000,000	3,843,000,000
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant, equipment and mining development costs	2,831,000,000	3,716,000,000
Discontinued Operations
Property, Plant and Equipment [Line Items]
Payments to Acquire Mineral Rights					$ 634,000,000
Mining Operations [Member]
Property, Plant and Equipment [Line Items]
Capitalized interest	$ 92,000,000	$ 157,000,000	$ 148,000,000
El Abra
Property, Plant and Equipment [Line Items]
Reduction in Operating Rates, Percent	50.00%
Henderson
Property, Plant and Equipment [Line Items]
Reduction in Operating Rates, Percent	65.00%