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BUSINESS SEGMENTS INFORMATION (Customers and Labor Matters) (Details) - USD ($) $ in Millions	4 Months Ended	12 Months Ended
	Apr. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Major Customer and Labor Matters [Line Items]
Revenues		$ 22,845	$ 14,198	$ 14,402
Inventory, Copper Metal Production | Product Concentration Risk | Cerro Verde
Major Customer and Labor Matters [Line Items]
Concentration risk percentage		23.00%
Inventory, Copper Metal Production | Product Concentration Risk | Morenci
Major Customer and Labor Matters [Line Items]
Concentration risk percentage		16.00%
Affiliated Entity | Noncontrolling Interest Owners Of South America Mining Operations
Major Customer and Labor Matters [Line Items]
Revenues		$ 1,400	900	1,000
Affiliated Entity | PT Smelting
Major Customer and Labor Matters [Line Items]
Revenues		$ 3,100	$ 1,800	$ 1,900
PT Smelting
Major Customer and Labor Matters [Line Items]
Deferred intercompany profit	25.00%	39.50%
PT Smelting | Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk
Major Customer and Labor Matters [Line Items]
Concentration risk percentage		14.00%	12.00%	13.00%
Global | Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk
Major Customer and Labor Matters [Line Items]
Concentration risk percentage		31.00%
Global | Workforce Subject to Collective Bargaining Arrangements Expiring within One Year | Labor Force Concentration Risk
Major Customer and Labor Matters [Line Items]
Concentration risk percentage		14.00%
South America | Inventory, Copper Metal Production | Product Concentration Risk | Cerro Verde
Major Customer and Labor Matters [Line Items]
Concentration risk percentage		85.00%

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Percentage of deferred intercompany profit on sales to equity method investee.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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