General Information - Additional Information (Details) - USD ($) $ in Thousands, shares in Millions	1 Months Ended	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Mar. 31, 2024	Jun. 30, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 01, 2024	Aug. 31, 2024	Jun. 29, 2024	Dec. 31, 2023	Jan. 01, 2023	Dec. 31, 2022
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Acquisition of additional ownership interest in Cerro Verde		$ (215,000)			$ (215,000)
Deferred income taxes					36,000	$ 130,000
Portion of Gold Sales Attributable to Parent				$ 190
Noncontrolling Interests
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Acquisition of additional ownership interest in Cerro Verde	$ (90,000)	$ (90,000)
Total Stockholder's Equity
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Acquisition of additional ownership interest in Cerro Verde	$ (125,000)				$ (125,000)
Cerro Verde
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Shares purchased (in shares)	5.3
Value of shares purchased	$ 210,000
Investment owned, percent							55.08%	53.56%
Deferred income taxes	5,000
Cerro Verde | Noncontrolling Interests
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Acquisition of additional ownership interest in Cerro Verde	(90,000)
Cerro Verde | Total Stockholder's Equity
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Acquisition of additional ownership interest in Cerro Verde	$ (125,000)
PT Freeport Indonesia
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Deferred Income Tax Credits			$ 215,000
PT Freeport Indonesia | PT Smelting
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity method investment, percentage ownership				66.00%					39.50%
PT Freeport Indonesia
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Increase In Equity Method Investment				$ 254,000
Noncontrolling interest, ownership percentage by parent										81.00%		81.00%
FCX
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Noncontrolling interest, ownership percentage by parent											48.76%
PT Mineral Industri Indonesia
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Noncontrolling interest, ownership percentage by parent											26.24%
PT Indonesia Papua Metal Dan Mineral
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Noncontrolling interest, ownership percentage by parent											25.00%