SUPPLEMENTARY MINERAL RESERVE INFORMATION (UNAUDITED) (Recoverable Reserves) (Details) oz in Millions, lb in Millions	120 Months Ended	132 Months Ended
	Dec. 31, 2031	Dec. 31, 2041	Dec. 31, 2022 lb oz $ / lb $ / oz	Dec. 21, 2018
Copper
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves			115,400
Long Term Average Price Used To Estimate Recoverable Reserves | $ / lb			3.00
Gold (ounces) [Member]
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves | oz			26.9
Long Term Average Price Used To Estimate Recoverable Reserves | $ / oz			1,500
Molybdenum mines
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves			3,610
Long Term Average Price Used To Estimate Recoverable Reserves | $ / lb			12
Silver
Estimated Recoverable Proven and Probable Reserves [Line Items]
Long Term Average Price Used To Estimate Recoverable Reserves | $ / oz			20
Net Equity Interest [Member] | Copper
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves			80,400
Net Equity Interest [Member] | Gold (ounces) [Member]
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves | oz			13.5
Net Equity Interest [Member] | Molybdenum mines
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves			3,200
Net Equity Interest [Member] | Silver
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves | oz			226.0
Consolidated Basis [Member]
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated recoverable proven and probable copper reserves in leach stockpiles (in pounds)			1,800
Estimated recoverable proven and probable copper reserves in mill stockpiles (in pounds)			300
Consolidated Basis [Member] | Copper
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves			111,000
Consolidated Basis [Member] | Copper | North America
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves			48,600
Consolidated Basis [Member] | Copper | South America
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves			31,700
Consolidated Basis [Member] | Copper | Indonesia
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves			30,800
Consolidated Basis [Member] | Gold (ounces) [Member]
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves | oz			26.9
Consolidated Basis [Member] | Gold (ounces) [Member] | North America
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves | oz			0.6
Consolidated Basis [Member] | Gold (ounces) [Member] | South America
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves | oz			0.0
Consolidated Basis [Member] | Gold (ounces) [Member] | Indonesia
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves | oz			26.3
Consolidated Basis [Member] | Molybdenum mines
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves			3,530
Consolidated Basis [Member] | Molybdenum mines | North America
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves			2,830
Consolidated Basis [Member] | Molybdenum mines | South America
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves			700
Consolidated Basis [Member] | Molybdenum mines | Indonesia
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves			0
Consolidated Basis [Member] | Silver
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimated Recoverable Proven And Probable Reserves | oz			340.0
PT Freeport Indonesia
Estimated Recoverable Proven and Probable Reserves [Line Items]
Ownership percentage of subsidiary			81.00%	48.76%
PT Freeport Indonesia | PT Freeport Indonesia
Estimated Recoverable Proven and Probable Reserves [Line Items]
Ownership percentage of subsidiary			48.76%
Forecast | PT-FI
Estimated Recoverable Proven and Probable Reserves [Line Items]
Planned Operations, Mining, Extension Term		10 years
Estimate of proven and probable mineral reserves to be mined	0.46
Forecast | PT-FI | Copper
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimate of proven and probable mineral reserves to be mined	0.49
Forecast | PT-FI | Gold (ounces) [Member]
Estimated Recoverable Proven and Probable Reserves [Line Items]
Estimate of proven and probable mineral reserves to be mined	0.51