Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation.

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CONTINGENCIES (Environmental and Reclamation Programs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Site Contingency [Line Items]
Time deposits	$ 113
Settlements and revisions to cash flow estimates, net	331	$ (13)	$ (5)
New Mexico Environmental And Reclamation Programs
Site Contingency [Line Items]
Accrued reclamation and closure costs	510
Arizona Environmental And Reclamation Programs
Site Contingency [Line Items]
Accrued reclamation and closure costs	363
Colorado Environmental And Reclamation Programs
Site Contingency [Line Items]
Accrued reclamation and closure costs	153
El Abra
Site Contingency [Line Items]
Accrued reclamation and closure costs	82
Cerro Verde
Site Contingency [Line Items]
Accrued reclamation and closure costs	141
Pt Freeport Indonesia Environmental And Reclamation Programs
Site Contingency [Line Items]
Accrued reclamation and closure costs	1,100
Settlements and revisions to cash flow estimates, net	397
Pt Freeport Indonesia Environmental And Reclamation Programs \| Production and Delivery Costs [Member]
Site Contingency [Line Items]
Settlements and revisions to cash flow estimates, net	$ 340