Business Segments (Segment Reporting) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Revenues	$ 6,624	$ 5,737	$ 12,945	$ 11,126
Production and delivery	3,875	3,549	7,719	6,714
Cost, Depreciation, Amortization and Depletion	509	547	1,104	946
Selling, general and administrative expenses	123	115	267	241
Exploration and research expenses	40	42	77	73
Environmental obligations and shutdown costs	28	74	95	141
Operating income	2,049	1,410	3,683	3,011
Interest expense, net	88	171	177	322
Net gain on early extinguishment of debt	0	5	0	5
Other Nonoperating Income (Expense)	69	24	198	112
Provision for (benefit from) income taxes	754	539	1,266	1,038
Equity in affiliated companies’ net earnings	4	2	4	12
Net income (loss) attributable to noncontrolling interests	664	388	1,353	774
Total assets	54,635	50,907	54,635	50,907	$ 52,506
Capital expenditures	1,116	1,163	2,370	2,284
PT Freeport Indonesia
Segment Reporting Information [Line Items]
Provision for (benefit from) income taxes	182
Operating Segments | North America
Segment Reporting Information [Line Items]
Revenues	23	40	100	169
Production and delivery	1,151	1,167	2,375	2,329
Cost, Depreciation, Amortization and Depletion	106	99	218	202
Selling, general and administrative expenses	1	1	2	2
Exploration and research expenses	14	18	26	37
Environmental obligations and shutdown costs	0	1	0	22
Operating income	264	304	417	668
Interest expense, net	1	0	1	0
Net gain on early extinguishment of debt		0		0
Other Nonoperating Income (Expense)	1	(3)	(1)	(1)
Provision for (benefit from) income taxes	0	0	0	0
Equity in affiliated companies’ net earnings	0	0	0	0
Net income (loss) attributable to noncontrolling interests	0	0	0	0
Total assets	9,690	8,921	9,690	8,921
Capital expenditures	243	182	480	378
Operating Segments | South America
Segment Reporting Information [Line Items]
Revenues	1,329	973	2,363	2,165
Production and delivery	860	783	1,633	1,590
Cost, Depreciation, Amortization and Depletion	114	132	222	239
Selling, general and administrative expenses	2	2	4	4
Exploration and research expenses	5	4	9	6
Environmental obligations and shutdown costs	0	0	0	0
Operating income	530	227	779	745
Interest expense, net	5	55	10	84
Net gain on early extinguishment of debt		0		0
Other Nonoperating Income (Expense)	5	(41)	29	(29)
Provision for (benefit from) income taxes	214	113	317	307
Equity in affiliated companies’ net earnings	0	0	0	0
Net income (loss) attributable to noncontrolling interests	164	20	254	178
Total assets	10,356	10,334	10,356	10,334
Capital expenditures	90	83	172	183
Corporate And Eliminations
Segment Reporting Information [Line Items]
Revenues	496	478	896	1,075
Production and delivery	(1,493)	(1,557)	(2,763)	(3,056)
Cost, Depreciation, Amortization and Depletion	17	19	33	32
Selling, general and administrative expenses	84	75	185	162
Exploration and research expenses	17	20	36	30
Environmental obligations and shutdown costs	28	73	95	119
Operating income	(86)	(239)	(478)	(489)
Interest expense, net	68	96	141	205
Net gain on early extinguishment of debt		5		5
Other Nonoperating Income (Expense)	31	41	94	89
Provision for (benefit from) income taxes	49	16	62	(9)
Equity in affiliated companies’ net earnings	1	2	3	1
Net income (loss) attributable to noncontrolling interests	37	0	36	(43)
Total assets	4,490	5,082	4,490	5,082
Capital expenditures	51	31	89	58
Intersegment
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Intersegment | North America
Segment Reporting Information [Line Items]
Revenues	1,513	1,550	2,938	3,091
Intersegment | South America
Segment Reporting Information [Line Items]
Revenues	182	175	284	419
Morenci | Operating Segments | North America
Segment Reporting Information [Line Items]
Revenues	13	26	50	58
Production and delivery	438	423	897	804
Cost, Depreciation, Amortization and Depletion	45	42	93	85
Selling, general and administrative expenses	1	1	1	1
Exploration and research expenses	5	3	9	6
Environmental obligations and shutdown costs	0	0	0	0
Operating income	111	127	177	325
Interest expense, net	0	0	0	0
Net gain on early extinguishment of debt		0		0
Other Nonoperating Income (Expense)	0	(1)	0	(2)
Provision for (benefit from) income taxes	0	0	0	0
Equity in affiliated companies’ net earnings	0	0	0	0
Net income (loss) attributable to noncontrolling interests	0	0	0	0
Total assets	3,182	3,167	3,182	3,167
Capital expenditures	47	67	91	123
Morenci | Intersegment | North America
Segment Reporting Information [Line Items]
Revenues	587	570	1,127	1,163
Other Individually Immaterial Operating Segments | Operating Segments | North America
Segment Reporting Information [Line Items]
Revenues	10	14	50	111
Production and delivery	713	744	1,478	1,525
Cost, Depreciation, Amortization and Depletion	61	57	125	117
Selling, general and administrative expenses	0	0	1	1
Exploration and research expenses	9	15	17	31
Environmental obligations and shutdown costs	0	1	0	22
Operating income	153	177	240	343
Interest expense, net	1	0	1	0
Net gain on early extinguishment of debt		0		0
Other Nonoperating Income (Expense)	1	(2)	(1)	1
Provision for (benefit from) income taxes	0	0	0	0
Equity in affiliated companies’ net earnings	0	0	0	0
Net income (loss) attributable to noncontrolling interests	0	0	0	0
Total assets	6,508	5,754	6,508	5,754
Capital expenditures	196	115	389	255
Other Individually Immaterial Operating Segments | Operating Segments | South America
Segment Reporting Information [Line Items]
Revenues	254	190	462	424
Production and delivery	181	174	351	361
Cost, Depreciation, Amortization and Depletion	17	15	33	31
Selling, general and administrative expenses	0	0	0	0
Exploration and research expenses	2	1	3	2
Environmental obligations and shutdown costs	0	0	0	0
Operating income	54	0	75	30
Interest expense, net	0	0	0	0
Net gain on early extinguishment of debt		0		0
Other Nonoperating Income (Expense)	0	4	13	(2)
Provision for (benefit from) income taxes	23	0	35	7
Equity in affiliated companies’ net earnings	0	0	0	0
Net income (loss) attributable to noncontrolling interests	22	2	36	20
Total assets	1,988	1,890	1,988	1,890
Capital expenditures	23	26	45	65
Other Individually Immaterial Operating Segments | Intersegment | North America
Segment Reporting Information [Line Items]
Revenues	926	980	1,811	1,928
Other Individually Immaterial Operating Segments | Intersegment | South America
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Cerro Verde | Peruvian Supreme Court
Segment Reporting Information [Line Items]
Interest expense, net		(50)		(74)
Cerro Verde | Operating Segments | South America
Segment Reporting Information [Line Items]
Revenues	1,075	783	1,901	1,741
Production and delivery	679	609	1,282	1,229
Cost, Depreciation, Amortization and Depletion	97	117	189	208
Selling, general and administrative expenses	2	2	4	4
Exploration and research expenses	3	3	6	4
Environmental obligations and shutdown costs	0	0	0	0
Operating income	476	227	704	715
Interest expense, net	5	55	10	84
Net gain on early extinguishment of debt		0		0
Other Nonoperating Income (Expense)	5	(45)	16	(27)
Provision for (benefit from) income taxes	191	113	282	300
Equity in affiliated companies’ net earnings	0	0	0	0
Net income (loss) attributable to noncontrolling interests	142	18	218	158
Total assets	8,368	8,444	8,368	8,444
Capital expenditures	67	57	127	118
Labor-related charges	65		65
Cerro Verde | Intersegment | South America
Segment Reporting Information [Line Items]
Revenues	182	175	284	419
Grasberg Segment
Segment Reporting Information [Line Items]
Capital expenditures			750	790
Grasberg Segment | Operating Segments | Indonesia
Segment Reporting Information [Line Items]
Revenues	2,185	2,039	4,833	3,238
Production and delivery	672	861	1,533	1,199
Cost, Depreciation, Amortization and Depletion	248	275	583	423
Selling, general and administrative expenses	30	30	61	58
Exploration and research expenses	4	0	6	0
Environmental obligations and shutdown costs	0	0	0	0
Operating income	1,314	1,071	2,910	1,925
Interest expense, net	6	12	7	19
Net gain on early extinguishment of debt		0		0
Other Nonoperating Income (Expense)	30	28	68	60
Provision for (benefit from) income taxes	490	410	899	740
Equity in affiliated companies’ net earnings	3	0	1	11
Net income (loss) attributable to noncontrolling interests	463	368	1,063	639
Total assets	26,501	23,446	26,501	23,446
Capital expenditures	648	841	1,490	1,613
Administrative fine		55		55
Grasberg Segment | Intersegment | Indonesia
Segment Reporting Information [Line Items]
Revenues	83	198	260	367
Molybdenum
Segment Reporting Information [Line Items]
Capital expenditures			63	22
Molybdenum | Operating Segments
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Production and delivery	134	105	253	201
Cost, Depreciation, Amortization and Depletion	16	14	32	34
Selling, general and administrative expenses	0	0	0	0
Exploration and research expenses	0	0	0	0
Environmental obligations and shutdown costs	0	0	0	0
Operating income	(12)	31	(2)	138
Interest expense, net	0	0	0	0
Net gain on early extinguishment of debt		0		0
Other Nonoperating Income (Expense)	0	(1)	0	(1)
Provision for (benefit from) income taxes	0	0	0	0
Equity in affiliated companies’ net earnings	0	0	0	0
Net income (loss) attributable to noncontrolling interests	0	0	0	0
Total assets	1,915	1,717	1,915	1,717
Capital expenditures	36	13	63	22
Molybdenum | Intersegment
Segment Reporting Information [Line Items]
Revenues	138	150	283	373
Rod and Refining Segment | Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,693	1,463	3,182	2,986
Production and delivery	1,692	1,465	3,179	2,992
Cost, Depreciation, Amortization and Depletion	1	1	2	2
Selling, general and administrative expenses	0	0	0	0
Exploration and research expenses	0	0	0	0
Environmental obligations and shutdown costs	0	0	0	0
Operating income	11	7	22	8
Interest expense, net	0	0	0	0
Net gain on early extinguishment of debt		0		0
Other Nonoperating Income (Expense)	0	0	0	(1)
Provision for (benefit from) income taxes	0	0	0	0
Equity in affiliated companies’ net earnings	0	0	0	0
Net income (loss) attributable to noncontrolling interests	0	0	0	0
Total assets	273	280	273	280
Capital expenditures	11	2	16	7
Rod and Refining Segment | Intersegment
Segment Reporting Information [Line Items]
Revenues	11	10	21	16
Atlantic Copper Smelting and Refining Segment | Operating Segments
Segment Reporting Information [Line Items]
Revenues	898	744	1,571	1,493
Production and delivery	859	725	1,509	1,459
Cost, Depreciation, Amortization and Depletion	7	7	14	14
Selling, general and administrative expenses	6	7	15	15
Exploration and research expenses	0	0	0	0
Environmental obligations and shutdown costs	0	0	0	0
Operating income	28	9	35	16
Interest expense, net	8	8	18	14
Net gain on early extinguishment of debt		0		0
Other Nonoperating Income (Expense)	2	0	8	(5)
Provision for (benefit from) income taxes	1	0	(12)	0
Equity in affiliated companies’ net earnings	0	0	0	0
Net income (loss) attributable to noncontrolling interests	0	0	0	0
Total assets	1,410	1,127	1,410	1,127
Capital expenditures	37	11	60	23
Atlantic Copper Smelting and Refining Segment | Intersegment
Segment Reporting Information [Line Items]
Revenues	2	4	2	11
Corporate And Eliminations | Intersegment
Segment Reporting Information [Line Items]
Revenues	$ (1,929)	$ (2,087)	$ (3,788)	$ (4,277)