BUSINESS SEGMENTS INFORMATION (Segment Reporting) (Details) oz in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) oz	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 01, 2024	Aug. 31, 2024	Jan. 01, 2023	Dec. 21, 2018
Segment Reporting Information [Line Items]
Revenues	$ 25,455	$ 22,855	$ 22,780
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	15,554	13,627	13,070
Depreciation, depletion and amortization	2,241	2,068	2,019
Selling, general and administrative expenses	513	479	420
Exploration and research expenses	156	137	115
Environmental obligations and shutdown costs	127	319	121
Net gain on sales of assets	0	0	(2)
Operating income (loss)	6,864	6,225	7,037
Interest expense, net	319	515	560
Net gain on early extinguishment of debt	0	10	31
Other income, net	362	286	207
Provision for (benefit from) income taxes	(2,523)	(2,270)	(2,267)
Equity in affiliated companies’ net earnings	15	15	31
Net income attributable to noncontrolling interests	2,510	1,903	1,011
Net (loss) income attributable to common stockholders	1,889	1,848	3,468
Total assets	54,848	52,506	51,093
Capital expenditures	4,808	4,824	3,469
Administrative Fees Expense	4	55	41
Revisions to cash flow estimates and settlements, net	635	54	381
Metals Inventory Adjustments	$ 91	14	29
Gold
Segment Reporting Information [Line Items]
Mineral Sales, Volume | oz	190
Cerro Verde
Segment Reporting Information [Line Items]
Ownership percentage				55.08%	53.56%
Peruvian Supreme Court
Segment Reporting Information [Line Items]
Other income, net		$ (69)
PT Freeport Indonesia
Segment Reporting Information [Line Items]
Provision for (benefit from) income taxes	$ 182
Loss Contingency Accrual, Period Increase (Decrease)	4
FCX | PT Freeport Indonesia
Segment Reporting Information [Line Items]
Ownership percentage of subsidiary		81.00%				48.76%
PT Indonesia Asahan Aluminium (Persero) (Inalum)
Segment Reporting Information [Line Items]
Ownership percentage of subsidiary							26.24%
PT Indonesia Asahan Aluminium (Persero) (Inalum) | PT Freeport Indonesia
Segment Reporting Information [Line Items]
Ownership percentage of subsidiary		19.00%
Cerro Verde | Peruvian Supreme Court
Segment Reporting Information [Line Items]
Interest expense, net		$ 74
Indonesia operations
Segment Reporting Information [Line Items]
Capital expenditures	2,908	3,411	2,381
Molybdenum
Segment Reporting Information [Line Items]
Capital expenditures	117	84	33
Indonesia
Segment Reporting Information [Line Items]
Revenues	1,108	767	3,026
Operating Segments | Molybdenum
Segment Reporting Information [Line Items]
Revenues	0	0	0
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	530	439	359
Depreciation, depletion and amortization	73	66	74
Selling, general and administrative expenses	0	0	0
Exploration and research expenses	0	0	3
Environmental obligations and shutdown costs	0	0	0
Net gain on sales of assets			0
Operating income (loss)	(11)	172	129
Interest expense, net	0	0	0
Net gain on early extinguishment of debt		0	0
Other income, net	0	(1)	0
Provision for (benefit from) income taxes	0	0	0
Equity in affiliated companies’ net earnings	0	0	0
Net income attributable to noncontrolling interests	0	0	0
Total assets	2,018	1,782	1,697
Capital expenditures	117	84	33
Operating Segments | Rod & Refining
Segment Reporting Information [Line Items]
Revenues	6,196	5,886	6,281
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	6,206	5,901	6,330
Depreciation, depletion and amortization	4	5	5
Selling, general and administrative expenses	0	0	0
Exploration and research expenses	0	0	0
Environmental obligations and shutdown costs	0	0	0
Net gain on sales of assets			0
Operating income (loss)	29	20	(23)
Interest expense, net	0	0	0
Net gain on early extinguishment of debt		0	0
Other income, net	(1)	(2)	(1)
Provision for (benefit from) income taxes	0	0	0
Equity in affiliated companies’ net earnings	0	0	0
Net income attributable to noncontrolling interests	0	0	0
Total assets	202	172	183
Capital expenditures	35	13	9
Operating Segments | Atlantic Copper Smelting & Refining
Segment Reporting Information [Line Items]
Revenues	3,009	2,791	2,439
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	2,912	2,718	2,452
Depreciation, depletion and amortization	28	28	27
Selling, general and administrative expenses	28	28	25
Exploration and research expenses	0	0	0
Environmental obligations and shutdown costs	0	0	0
Net gain on sales of assets			0
Operating income (loss)	49	36	(61)
Interest expense, net	36	31	15
Net gain on early extinguishment of debt		0	0
Other income, net	13	(8)	13
Provision for (benefit from) income taxes	11	0	1
Equity in affiliated companies’ net earnings	0	0	0
Net income attributable to noncontrolling interests	0	0	0
Total assets	1,705	1,326	1,262
Capital expenditures	142	64	76
Operating Segments | North America
Segment Reporting Information [Line Items]
Revenues	180	243	428
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	4,996	4,778	4,377
Depreciation, depletion and amortization	439	418	410
Selling, general and administrative expenses	4	4	5
Exploration and research expenses	44	50	47
Environmental obligations and shutdown costs	0	27	(4)
Net gain on sales of assets			0
Operating income (loss)	757	1,039	1,875
Interest expense, net	1	1	2
Net gain on early extinguishment of debt		0	0
Other income, net	1	(2)	(32)
Provision for (benefit from) income taxes	0	0	0
Equity in affiliated companies’ net earnings	0	0	0
Net income attributable to noncontrolling interests	0	0	0
Total assets	9,994	9,191	8,604
Capital expenditures	1,033	761	597
Operating Segments | North America | Morenci
Segment Reporting Information [Line Items]
Revenues	101	91	175
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	1,826	1,730	1,550
Depreciation, depletion and amortization	187	175	177
Selling, general and administrative expenses	2	2	2
Exploration and research expenses	17	11	2
Environmental obligations and shutdown costs	0	(1)	(5)
Net gain on sales of assets			0
Operating income (loss)	315	502	963
Interest expense, net	0	0	1
Net gain on early extinguishment of debt		0	0
Other income, net	(1)	(5)	(2)
Provision for (benefit from) income taxes	0	0	0
Equity in affiliated companies’ net earnings	0	0	0
Net income attributable to noncontrolling interests	0	0	0
Total assets	3,228	3,195	3,052
Capital expenditures	184	232	263
Operating Segments | North America | Other
Segment Reporting Information [Line Items]
Revenues	79	152	253
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	3,170	3,048	2,827
Depreciation, depletion and amortization	252	243	233
Selling, general and administrative expenses	2	2	3
Exploration and research expenses	27	39	45
Environmental obligations and shutdown costs	0	28	1
Net gain on sales of assets			0
Operating income (loss)	442	537	912
Interest expense, net	1	1	1
Net gain on early extinguishment of debt		0	0
Other income, net	2	3	(30)
Provision for (benefit from) income taxes	0	0	0
Equity in affiliated companies’ net earnings	0	0	0
Net income attributable to noncontrolling interests	0	0	0
Total assets	6,766	5,996	5,552
Capital expenditures	849	529	334
Operating Segments | South America
Segment Reporting Information [Line Items]
Revenues	4,533	4,154	4,212
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	3,230	3,239	3,074
Depreciation, depletion and amortization	446	459	408
Selling, general and administrative expenses	8	9	8
Exploration and research expenses	16	14	9
Environmental obligations and shutdown costs	0	0	0
Net gain on sales of assets			0
Operating income (loss)	1,471	1,220	1,219
Interest expense, net	21	77	15
Net gain on early extinguishment of debt		0	0
Other income, net	66	(2)	17
Provision for (benefit from) income taxes	(604)	(512)	(453)
Equity in affiliated companies’ net earnings	0	0	0
Net income attributable to noncontrolling interests	479	336	407
Total assets	10,156	10,050	10,271
Capital expenditures	375	368	304
Operating Segments | South America | Cerro Verde
Segment Reporting Information [Line Items]
Revenues	3,618	3,330	3,444
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	2,529	2,529	2,369
Depreciation, depletion and amortization	380	395	357
Selling, general and administrative expenses	8	9	8
Exploration and research expenses	12	10	5
Environmental obligations and shutdown costs	0	0	0
Net gain on sales of assets			0
Operating income (loss)	1,327	1,174	1,211
Interest expense, net	21	77	15
Net gain on early extinguishment of debt		0	0
Other income, net	42	(13)	13
Provision for (benefit from) income taxes	(542)	(495)	(461)
Equity in affiliated companies’ net earnings	0	0	0
Net income attributable to noncontrolling interests	412	300	372
Total assets	8,096	8,120	8,398
Capital expenditures	293	271	164
Labor and Related Expense	97
Operating Segments | South America | Other
Segment Reporting Information [Line Items]
Revenues	915	824	768
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	701	710	705
Depreciation, depletion and amortization	66	64	51
Selling, general and administrative expenses	0	0	0
Exploration and research expenses	4	4	4
Environmental obligations and shutdown costs	0	0	0
Net gain on sales of assets			0
Operating income (loss)	144	46	8
Interest expense, net	0	0	0
Net gain on early extinguishment of debt		0	0
Other income, net	24	11	4
Provision for (benefit from) income taxes	(62)	(17)	8
Equity in affiliated companies’ net earnings	0	0	0
Net income attributable to noncontrolling interests	67	36	35
Total assets	2,060	1,930	1,873
Capital expenditures	82	97	140
Operating Segments | Indonesia | Indonesia operations
Segment Reporting Information [Line Items]
Revenues	9,774	7,816	8,028
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	3,368	2,570	2,686
Depreciation, depletion and amortization	1,193	1,028	1,025
Selling, general and administrative expenses	127	129	117
Exploration and research expenses	8	2	0
Environmental obligations and shutdown costs	0	0	0
Net gain on sales of assets			0
Operating income (loss)	5,622	4,708	4,598
Interest expense, net	28	35	38
Net gain on early extinguishment of debt		0	(11)
Other income, net	136	122	120
Provision for (benefit from) income taxes	(1,907)	(1,774)	(1,820)
Equity in affiliated companies’ net earnings	7	10	24
Net income attributable to noncontrolling interests	2,022	1,614	592
Total assets	27,309	25,548	22,727
Capital expenditures	2,908	3,324	2,382
Operating Segments | Indonesia | Indonesia operations | PT Smelting
Segment Reporting Information [Line Items]
Revenues	27	3,000
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	1,763	1,965	1,392
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	(5,688)	(6,018)	(6,208)
Depreciation, depletion and amortization	58	64	70
Selling, general and administrative expenses	346	309	265
Exploration and research expenses	88	71	56
Environmental obligations and shutdown costs	127	292	125
Net gain on sales of assets			(2)
Operating income (loss)	(1,053)	(970)	(700)
Interest expense, net	233	371	490
Net gain on early extinguishment of debt		10	42
Other income, net	147	179	90
Provision for (benefit from) income taxes	(23)	16	5
Equity in affiliated companies’ net earnings	8	5	7
Net income attributable to noncontrolling interests	9	(47)	12
Total assets	3,464	4,437	6,349
Capital expenditures	198	210	68
Oil And Gas Charges	217	70	6
Loss Contingency Accrual, Period Increase (Decrease)		65
Corporate And Eliminations [Member] | Atlantic Copper Smelting & Refining
Segment Reporting Information [Line Items]
Cost, Maintenance	41
Intersegment
Segment Reporting Information [Line Items]
Revenues	0	0	0
Intersegment | Molybdenum
Segment Reporting Information [Line Items]
Revenues	592	677	565
Intersegment | Rod & Refining
Segment Reporting Information [Line Items]
Revenues	43	40	31
Intersegment | Atlantic Copper Smelting & Refining
Segment Reporting Information [Line Items]
Revenues	8	19	4
Intersegment | Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(7,885)	(8,217)	(7,786)
Intersegment | North America
Segment Reporting Information [Line Items]
Revenues	6,060	6,073	6,282
Intersegment | North America | Morenci
Segment Reporting Information [Line Items]
Revenues	2,246	2,328	2,514
Intersegment | North America | Other
Segment Reporting Information [Line Items]
Revenues	3,814	3,745	3,768
Intersegment | South America
Segment Reporting Information [Line Items]
Revenues	638	787	506
Intersegment | South America | Cerro Verde
Segment Reporting Information [Line Items]
Revenues	638	787	506
Intersegment | South America | Other
Segment Reporting Information [Line Items]
Revenues	0	0	0
Intersegment | Indonesia | Indonesia operations
Segment Reporting Information [Line Items]
Revenues	544	621	398
Profit Share Liability | Cerro Verde | Peruvian Supreme Court
Segment Reporting Information [Line Items]
Interest expense, net		(13)
Production and Delivery Costs [Member] | Pt Freeport Indonesia Environmental And Reclamation Programs
Segment Reporting Information [Line Items]
Revisions to cash flow estimates and settlements, net	$ 144	$ (112)	$ 116