OWNERSHIP IN SUBSIDIARIES AND JOINT VENTURES - Ownership in Subsidiaries (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 21, 2018
Summary of investment holdings [Line Items]
Retained Earnings (Accumulated Deficit)	$ 2,059	$ 3,907
PT Freeport Indonesia
Summary of investment holdings [Line Items]
Net assets (liabilities) in subsidiary	15,500
Retained Earnings (Accumulated Deficit)	$ (11,000)
Morenci
Summary of investment holdings [Line Items]
Ownership percentage	72.00%
Other North America [Member]
Summary of investment holdings [Line Items]
Ownership percentage	100.00%
Cerro Verde [Member]
Summary of investment holdings [Line Items]
Ownership percentage	53.56%
El Abra [Member]
Summary of investment holdings [Line Items]
Ownership percentage	51.00%
Freeport Minerals Corporation [Member]
Summary of investment holdings [Line Items]
Loans Payable	$ 0
Freeport Minerals Corporation [Member] | Subsidiaries [Member]
Summary of investment holdings [Line Items]
Net assets (liabilities) in subsidiary	17,800
Retained Earnings (Accumulated Deficit)	$ 13,300
PT Freeport Indonesia
Summary of investment holdings [Line Items]
Ownership percentage	48.76%		81.00%
Atlantic Copper [Member]
Summary of investment holdings [Line Items]
Ownership percentage	100.00%
Net assets (liabilities) in subsidiary	$ 97
Retained Earnings (Accumulated Deficit)	443
Loans Payable	$ 611