BUSINESS SEGMENTS INFORMATION (Segment Reporting) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenues		$ 22,855	$ 22,780	$ 22,845
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		13,627	13,070	12,032
Depreciation, depletion and amortization		2,068	2,019	1,998
Selling, general and administrative expenses		479	420	383
Mining exploration and research expenses		137	115	55
Environmental obligations and shutdown costs		319	121	91
Net gain on sales of assets		0	(2)	(80)
Operating income (loss)		6,225	7,037	8,366
Interest expense, net		515	560	602
(Gain)/Loss		10	31	0
Other income (expense), net		286	207	(105)
Provision for (benefit from) income taxes		(2,270)	(2,267)	(2,299)
Equity in affiliated companies’ net earnings		15	31	5
Net income attributable to noncontrolling interests		1,903	1,011	1,059
Total assets		52,506	51,093	48,022
Capital expenditures		4,824	3,469	2,115
Settlements and revisions to cash flow estimates, net		54	381	331
Administrative Fees Expense		$ 55	$ 41	16
PT Freeport Indonesia
Segment Reporting Information [Line Items]
Administrative Fees Expense	$ 149
FCX
Segment Reporting Information [Line Items]
Dividends Receivable, Percentage			81.00%
FCX | PT Freeport Indonesia
Segment Reporting Information [Line Items]
Ownership percentage of subsidiary		48.76%	81.00%
Pt Freeport Indonesia Environmental And Reclamation Programs
Segment Reporting Information [Line Items]
Settlements and revisions to cash flow estimates, net			$ 131	397
Cerro Verde | Peruvian Supreme Court
Segment Reporting Information [Line Items]
Interest expense, net		$ 74
Grasberg Segment [Member]
Segment Reporting Information [Line Items]
Capital expenditures		1,696	1,575	1,296
Molybdenum
Segment Reporting Information [Line Items]
Capital expenditures		84	33	6
Indonesia
Segment Reporting Information [Line Items]
Revenues		767	3,026	3,132
Operating Segments | Molybdenum
Segment Reporting Information [Line Items]
Revenues		0	0	0
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		439	359	254
Depreciation, depletion and amortization		66	74	67
Selling, general and administrative expenses		0	0	0
Mining exploration and research expenses		0	0	0
Environmental obligations and shutdown costs		0	0	0
Net gain on sales of assets			0	0
Operating income (loss)		172	132	123
Interest expense, net		0	0	0
(Gain)/Loss		0	0
Other income (expense), net		(1)	0	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		1,782	1,697	1,713
Capital expenditures		84	33	6
Operating Segments | Rod & Refining
Segment Reporting Information [Line Items]
Revenues		5,886	6,281	6,356
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		5,901	6,330	6,381
Depreciation, depletion and amortization		5	5	5
Selling, general and administrative expenses		0	0	0
Mining exploration and research expenses		0	0	0
Environmental obligations and shutdown costs		0	0	0
Net gain on sales of assets			0	0
Operating income (loss)		20	(23)	(1)
Interest expense, net		0	0	0
(Gain)/Loss		0	0
Other income (expense), net		(2)	(1)	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		172	183	228
Capital expenditures		13	9	2
Operating Segments | Atlantic Copper Smelting & Refining
Segment Reporting Information [Line Items]
Revenues		2,791	2,439	2,961
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		2,718	2,452	2,907
Depreciation, depletion and amortization		28	27	28
Selling, general and administrative expenses		28	25	24
Mining exploration and research expenses		0	0	0
Environmental obligations and shutdown costs		0	0	0
Net gain on sales of assets			0	(19)
Operating income (loss)		36	(61)	21
Interest expense, net		31	15	6
(Gain)/Loss		0	0
Other income (expense), net		(8)	13	12
Provision for (benefit from) income taxes		0	1	0
Equity in affiliated companies’ net earnings		0	0	0
Net income attributable to noncontrolling interests		0	0	0
Total assets		1,326	1,262	1,318
Capital expenditures		64	76	34
Operating Segments | North America
Segment Reporting Information [Line Items]
Revenues		243	428	262
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		4,778	4,377	3,474
Depreciation, depletion and amortization		418	410	369
Selling, general and administrative expenses		4	5	4
Mining exploration and research expenses		3	1	1
Environmental obligations and shutdown costs		27	(4)	(1)
Net gain on sales of assets			0	0
Operating income (loss)		1,086	1,921	2,978
Interest expense, net		1	2	1
(Gain)/Loss		0	0
Other income (expense), net		(2)	(32)	15
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		9,191	8,604	7,916
Capital expenditures		761	597	342
Operating Segments | North America | Morenci
Segment Reporting Information [Line Items]
Revenues		91	175	82
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		1,730	1,550	1,239
Depreciation, depletion and amortization		175	177	152
Selling, general and administrative expenses		2	2	2
Mining exploration and research expenses		0	0	0
Environmental obligations and shutdown costs		(1)	(5)	0
Net gain on sales of assets			0	0
Operating income (loss)		513	965	1,417
Interest expense, net		0	1	0
(Gain)/Loss		0	0
Other income (expense), net		(5)	(2)	6
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		3,195	3,052	2,708
Capital expenditures		232	263	135
Operating Segments | North America | Other
Segment Reporting Information [Line Items]
Revenues		152	253	180
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		3,048	2,827	2,235
Depreciation, depletion and amortization		243	233	217
Selling, general and administrative expenses		2	3	2
Mining exploration and research expenses		3	1	1
Environmental obligations and shutdown costs		28	1	(1)
Net gain on sales of assets			0	0
Operating income (loss)		573	956	1,561
Interest expense, net		1	1	1
(Gain)/Loss		0	0
Other income (expense), net		3	(30)	9
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		5,996	5,552	5,208
Capital expenditures		529	334	207
Operating Segments | South America
Segment Reporting Information [Line Items]
Revenues		4,154	4,212	4,456
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		3,239	3,074	2,429
Depreciation, depletion and amortization		459	408	413
Selling, general and administrative expenses		9	8	8
Mining exploration and research expenses		0	0	0
Environmental obligations and shutdown costs		0	0	0
Net gain on sales of assets			0	0
Operating income (loss)		1,234	1,228	2,066
Interest expense, net		77	15	28
(Gain)/Loss		0	0
Other income (expense), net		(2)	17	43
Provision for (benefit from) income taxes		(512)	(453)	(820)
Equity in affiliated companies’ net earnings		0	0	0
Net income attributable to noncontrolling interests		336	407	602
Total assets		10,050	10,271	10,615
Capital expenditures		368	304	162
Operating Segments | South America | Cerro Verde
Segment Reporting Information [Line Items]
Revenues		3,330	3,444	3,736
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		2,529	2,369	2,000
Depreciation, depletion and amortization		395	357	366
Selling, general and administrative expenses		9	8	8
Mining exploration and research expenses		0	0	0
Environmental obligations and shutdown costs		0	0	0
Net gain on sales of assets			0	0
Operating income (loss)		1,184	1,216	1,822
Interest expense, net		77	15	28
(Gain)/Loss		0	0
Other income (expense), net		(13)	13	30
Provision for (benefit from) income taxes		(495)	(461)	(730)
Equity in affiliated companies’ net earnings		0	0	0
Net income attributable to noncontrolling interests		300	372	526
Total assets		8,120	8,398	8,694
Capital expenditures		271	164	132
Labor and Related Expense			92
Operating Segments | South America | Other
Segment Reporting Information [Line Items]
Revenues		824	768	720
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		710	705	429
Depreciation, depletion and amortization		64	51	47
Selling, general and administrative expenses		0	0	0
Mining exploration and research expenses		0	0	0
Environmental obligations and shutdown costs		0	0	0
Net gain on sales of assets			0	0
Operating income (loss)		50	12	244
Interest expense, net		0	0	0
(Gain)/Loss		0	0
Other income (expense), net		11	4	13
Provision for (benefit from) income taxes		(17)	8	(90)
Equity in affiliated companies’ net earnings		0	0	0
Net income attributable to noncontrolling interests		36	35	76
Total assets		1,930	1,873	1,921
Capital expenditures		97	140	30
Operating Segments | Indonesia | Grasberg Segment [Member]
Segment Reporting Information [Line Items]
Revenues		7,816	8,028	7,241
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		2,552	2,684	2,425
Depreciation, depletion and amortization		1,028	1,025	1,049
Selling, general and administrative expenses		129	117	111
Mining exploration and research expenses		0	0	0
Environmental obligations and shutdown costs		0	0	0
Net gain on sales of assets			0	0
Operating income (loss)		4,728	4,600	3,938
Interest expense, net		42	40	48
(Gain)/Loss		0	(11)
Other income (expense), net		127	124	(152)
Provision for (benefit from) income taxes		(1,774)	(1,820)	(1,524)
Equity in affiliated companies’ net earnings		10	24	6
Net income attributable to noncontrolling interests		1,614	592	459
Total assets		21,655	20,639	18,971
Capital expenditures		1,696	1,575	1,296
Operating Segments | Indonesia | Grasberg Segment [Member] | PT Smelting
Segment Reporting Information [Line Items]
Revenues		27	3,000	3,100
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues		1,965	1,392	1,569
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization		(6,000)	(6,206)	(5,838)
Depreciation, depletion and amortization		64	70	67
Selling, general and administrative expenses		309	265	236
Mining exploration and research expenses		134	114	54
Environmental obligations and shutdown costs		292	125	92
Net gain on sales of assets			(2)	(61)
Operating income (loss)		(1,051)	(760)	(759)
Interest expense, net		364	488	519
(Gain)/Loss		10	42
Other income (expense), net		174	86	(25)
Provision for (benefit from) income taxes		16	5	45
Equity in affiliated companies’ net earnings		5	7	(1)
Net income attributable to noncontrolling interests		(47)	12	(2)
Total assets		8,330	8,437	7,261
Capital expenditures		1,838	875	273
Corporate And Eliminations [Member] | Freeport Cobalt
Segment Reporting Information [Line Items]
Net gain on sales of assets			(60)
Corporate And Eliminations [Member] | Atlantic Copper Smelting & Refining
Segment Reporting Information [Line Items]
Cost, Maintenance		41
Corporate And Eliminations [Member] | Miami smelter
Segment Reporting Information [Line Items]
Cost, Maintenance			87
Intersegment
Segment Reporting Information [Line Items]
Revenues		0	0	0
Intersegment | Molybdenum
Segment Reporting Information [Line Items]
Revenues		677	565	444
Intersegment | Rod & Refining
Segment Reporting Information [Line Items]
Revenues		40	31	29
Intersegment | Atlantic Copper Smelting & Refining
Segment Reporting Information [Line Items]
Revenues		19	4	0
Intersegment | Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues		(8,217)	(7,786)	(7,778)
Intersegment | North America
Segment Reporting Information [Line Items]
Revenues		6,073	6,282	6,563
Intersegment | North America | Morenci
Segment Reporting Information [Line Items]
Revenues		2,328	2,514	2,728
Intersegment | North America | Other
Segment Reporting Information [Line Items]
Revenues		3,745	3,768	3,835
Intersegment | South America
Segment Reporting Information [Line Items]
Revenues		787	506	460
Intersegment | South America | Cerro Verde
Segment Reporting Information [Line Items]
Revenues		787	506	460
Intersegment | South America | Other
Segment Reporting Information [Line Items]
Revenues		0	0	0
Intersegment | Indonesia | Grasberg Segment [Member]
Segment Reporting Information [Line Items]
Revenues		621	398	282
Unfavorable Regulatory Actions | Operating Segments | Indonesia | Grasberg Segment [Member]
Segment Reporting Information [Line Items]
Provision for (benefit from) income taxes			189
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]
Settlements and revisions to cash flow estimates, net		$ (112)	$ 116	$ 340