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COMMITMENTS AND GUARANTEES (Special Mining License (IUPK)) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended			21 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 21, 2018
Contractual Obligations Mining Contracts [Line Items]
Payments of Dividends				$ 0
Higher threshold, percent		50.00%
Smelter development progress, percent complete	50.00%	50.00%
Royalty Expense		$ 366	$ 330	165
Export Duties Expense		325	218	92
Surety Bond
Contractual Obligations Mining Contracts [Line Items]
Assurance Bond, Smelter Development	$ 488	$ 488
PT Freeport Indonesia
Contractual Obligations Mining Contracts [Line Items]
Progressive export duty on copper concentrates, higher threshold, percent	5.00%	5.00%			7.50%
Progressive export duty on copper concentrates, lower threshold, percent	2.50%	2.50%
Lower threshold, percent		30.00%
Royalty Expense		$ 357	319	160
Export Duties Expense		$ 325	218	$ 92
PT Freeport Indonesia \| Copper
Contractual Obligations Mining Contracts [Line Items]
Royalty Interest in Future Production	4.00%	4.00%
PT Freeport Indonesia \| Gold
Contractual Obligations Mining Contracts [Line Items]
Royalty Interest in Future Production	3.75%	3.75%
PT Freeport Indonesia \| Silver
Contractual Obligations Mining Contracts [Line Items]
Royalty Interest in Future Production	3.25%	3.25%
PT Freeport Indonesia \| Construction Contracts \| Surety Bond
Contractual Obligations Mining Contracts [Line Items]
Assurance Bond, Smelter Development	$ 133	$ 133
PT Freeport Indonesia \| Intersegment Eliminations [Member]
Contractual Obligations Mining Contracts [Line Items]
Payments of Dividends		$ 2,500	$ 1,000
Tax Authority, In Papua, Indonesia
Contractual Obligations Mining Contracts [Line Items]
Foreign income tax rate under new stability agreement		25.00%
Foreign Profits Tax Rate on Net Income Under New Stability Agreement		10.00%
Annual Surface Water Tax Payments [Member] \| PT Freeport Indonesia
Contractual Obligations Mining Contracts [Line Items]
Payments for Other Taxes		$ 15