XML 52 R35.htm IDEA: XBRL DOCUMENT
v3.21.1

Business Segments (Segment Reporting) (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 USD ($) segment | Mar. 31, 2020 USD ($) | Dec. 31, 2020 USD ($)
Segment Reporting Information [Line Items] |  |  |
Number of Operating Segments | segment | 4 |  |
Deferred Intercompany Profit, Percentage | 25.00% |  |
Revenues | $ 4,850 | $ 2,798 |
Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization (Deprecated 2019-01-31) | (2,786) | (2,545) |
Cost, Depreciation, Amortization and Depletion | 419 | 341 |
Metals inventory adjustments | 1 | 222 |
Selling, general and administrative expenses | (100) | (110) |
Mining exploration and research expenses | 7 | 16 |
Environmental obligations and shutdown costs | 5 | 26 |
Net gain on sales of assets | 0 | 11 |
Operating income (loss) | 1,532 | (473) |
Interest expense, net | 145 | 127 |
Provision for (benefit from) income taxes | 443 | (60) |
Total assets | 43,643 | 40,219 | $ 42,144
Capital expenditures | 370 | 610 |
Operating Segments | North America |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 32 | 9 |
Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization (Deprecated 2019-01-31) | (749) | (860) |
Cost, Depreciation, Amortization and Depletion | 80 | 92 |
Metals inventory adjustments | 0 | 145 |
Selling, general and administrative expenses | (1) | (1) |
Mining exploration and research expenses | 0 | 1 |
Environmental obligations and shutdown costs | 0 | 0 |
Net gain on sales of assets |  | 0 |
Operating income (loss) | 508 | (114) |
Interest expense, net | 0 | 1 |
Provision for (benefit from) income taxes | 0 | 0 |
Total assets | 7,912 | 7,907 |
Capital expenditures | 26 | 184 |
Operating Segments | South America |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 1,092 | 474 |
Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization (Deprecated 2019-01-31) | (539) | (534) |
Cost, Depreciation, Amortization and Depletion | 101 | 108 |
Metals inventory adjustments | 0 | 60 |
Selling, general and administrative expenses | (2) | (2) |
Mining exploration and research expenses | 0 | 0 |
Environmental obligations and shutdown costs | 0 | 0 |
Net gain on sales of assets |  | 0 |
Operating income (loss) | 495 | (192) |
Interest expense, net | 13 | 28 |
Provision for (benefit from) income taxes | 194 | (78) |
Total assets | 10,461 | 10,126 |
Capital expenditures | 21 | 74 |
Corporate And Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 347 | 326 |
Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization (Deprecated 2019-01-31) | 1,003 | 788 |
Cost, Depreciation, Amortization and Depletion | 16 | 15 |
Metals inventory adjustments | 0 | 13 |
Selling, general and administrative expenses | (64) | (74) |
Mining exploration and research expenses | 7 | 15 |
Environmental obligations and shutdown costs | 5 | 25 |
Net gain on sales of assets |  | 11 |
Operating income (loss) | (222) | (143) |
Interest expense, net | 130 | 94 |
Provision for (benefit from) income taxes | (66) | 6 |
Total assets | 4,734 | 2,821 |
Capital expenditures | 5 | 11 |
Intersegment |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 |
Intersegment | North America |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 1,306 | 976 |
Intersegment | South America |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 45 | 38 |
PT Smelting | Affiliated Entity [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 792 | 380 |
Morenci [Member] | Operating Segments | North America |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 4 | 2 |
Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization (Deprecated 2019-01-31) | (269) | (349) |
Cost, Depreciation, Amortization and Depletion | 34 | 44 |
Metals inventory adjustments | 0 | 4 |
Selling, general and administrative expenses | 0 | (1) |
Mining exploration and research expenses | 0 | 0 |
Environmental obligations and shutdown costs | 0 | 0 |
Net gain on sales of assets |  | 0 |
Operating income (loss) | 265 | 46 |
Interest expense, net | 0 | 1 |
Provision for (benefit from) income taxes | 0 | 0 |
Total assets | 2,629 | 2,814 |
Capital expenditures | 10 | 44 |
Morenci [Member] | Intersegment | North America |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 564 | 442 |
Other Mines North America Copper Mines Segment [Member] | Operating Segments | North America |  |  |
Segment Reporting Information [Line Items] |  |  |
Metals inventory adjustments |  | 141 |
Other Individually Immaterial Operating Segments [Member] | Operating Segments | North America |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 28 | 7 |
Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization (Deprecated 2019-01-31) | (480) | (511) |
Cost, Depreciation, Amortization and Depletion | 46 | 48 |
Metals inventory adjustments | 0 |  |
Selling, general and administrative expenses | (1) | 0 |
Mining exploration and research expenses | 0 | 1 |
Environmental obligations and shutdown costs | 0 | 0 |
Net gain on sales of assets |  | 0 |
Operating income (loss) | 243 | (160) |
Interest expense, net | 0 | 0 |
Provision for (benefit from) income taxes | 0 | 0 |
Total assets | 5,283 | 5,093 |
Capital expenditures | 16 | 140 |
Other Individually Immaterial Operating Segments [Member] | Operating Segments | South America |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 175 | 98 |
Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization (Deprecated 2019-01-31) | (103) | (110) |
Cost, Depreciation, Amortization and Depletion | 12 | 15 |
Metals inventory adjustments | 0 | 60 |
Selling, general and administrative expenses | 0 | 0 |
Mining exploration and research expenses | 0 | 0 |
Environmental obligations and shutdown costs | 0 | 0 |
Net gain on sales of assets |  | 0 |
Operating income (loss) | 60 | (87) |
Interest expense, net | 0 | 0 |
Provision for (benefit from) income taxes | 21 | (26) |
Total assets | 1,738 | 1,655 |
Capital expenditures | 1 | 15 |
Other Individually Immaterial Operating Segments [Member] | Intersegment | North America |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 742 | 534 |
Other Individually Immaterial Operating Segments [Member] | Intersegment | South America |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 |
Cerro Verde [Member] | Operating Segments | South America |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 917 | 376 |
Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization (Deprecated 2019-01-31) | (436) | (424) |
Cost, Depreciation, Amortization and Depletion | 89 | 93 |
Metals inventory adjustments | 0 | 0 |
Selling, general and administrative expenses | (2) | (2) |
Mining exploration and research expenses | 0 | 0 |
Environmental obligations and shutdown costs | 0 | 0 |
Net gain on sales of assets |  | 0 |
Operating income (loss) | 435 | (105) |
Interest expense, net | 13 | 28 |
Provision for (benefit from) income taxes | 173 | (52) |
Total assets | 8,723 | 8,471 |
Capital expenditures | 20 | 59 |
Cerro Verde [Member] | Intersegment | South America |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 45 | 38 |
Grasberg Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 310 | 326 |
Grasberg Segment [Member] | Operating Segments | Indonesia |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 1,383 | 445 |
Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization (Deprecated 2019-01-31) | (455) | (343) |
Cost, Depreciation, Amortization and Depletion | 199 | 101 |
Metals inventory adjustments | 0 | 0 |
Selling, general and administrative expenses | (26) | (28) |
Mining exploration and research expenses | 0 | 0 |
Environmental obligations and shutdown costs | 0 | 0 |
Net gain on sales of assets |  | 0 |
Operating income (loss) | 755 | (27) |
Interest expense, net | 1 | 1 |
Provision for (benefit from) income taxes | 315 | 12 |
Total assets | 17,551 | 16,711 |
Capital expenditures | 310 | 326 |
Grasberg Segment [Member] | Intersegment | Indonesia |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 52 | 0 |
Molybdenum |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 1 | 7 |
Molybdenum | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 |
Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization (Deprecated 2019-01-31) | (57) | (66) |
Cost, Depreciation, Amortization and Depletion | 15 | 16 |
Metals inventory adjustments | 1 | 4 |
Selling, general and administrative expenses | 0 | 0 |
Mining exploration and research expenses | 0 | 0 |
Environmental obligations and shutdown costs | 0 | 0 |
Net gain on sales of assets |  | 0 |
Operating income (loss) | (3) | (15) |
Interest expense, net | 0 | 0 |
Provision for (benefit from) income taxes | 0 | 0 |
Total assets | 1,753 | 1,788 |
Capital expenditures | 1 | 7 |
Molybdenum | Intersegment |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 70 | 71 |
Rod and Refining Segment [Member] | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 1,309 | 1,115 |
Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization (Deprecated 2019-01-31) | (1,316) | (1,119) |
Cost, Depreciation, Amortization and Depletion | 1 | 2 |
Metals inventory adjustments | 0 | 0 |
Selling, general and administrative expenses | 0 | 0 |
Mining exploration and research expenses | 0 | 0 |
Environmental obligations and shutdown costs | 0 | 1 |
Net gain on sales of assets |  | 0 |
Operating income (loss) | (1) | 1 |
Interest expense, net | 0 | 0 |
Provision for (benefit from) income taxes | 0 | 0 |
Total assets | 235 | 231 |
Capital expenditures | 1 | 2 |
Rod and Refining Segment [Member] | Intersegment |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 7 | 8 |
Atlantic Copper Smelting and Refining Segment [Member] | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 687 | 429 |
Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization (Deprecated 2019-01-31) | (673) | (411) |
Cost, Depreciation, Amortization and Depletion | 7 | 7 |
Metals inventory adjustments | 0 | 0 |
Selling, general and administrative expenses | (7) | (5) |
Mining exploration and research expenses | 0 | 0 |
Environmental obligations and shutdown costs | 0 | 0 |
Net gain on sales of assets |  | 0 |
Operating income (loss) | 0 | 17 |
Interest expense, net | 1 | 3 |
Provision for (benefit from) income taxes | 0 | 0 |
Total assets | 997 | 635 |
Capital expenditures | 6 | 6 |
Atlantic Copper Smelting and Refining Segment [Member] | Intersegment |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 11 |
Corporate And Eliminations | Intersegment |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | (1,480) | $ (1,104) |
Miami smelter | Corporate And Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Cost, Maintenance | $ 68 |  |

X
- Definition Percentage of deferred intercompany profit on sales to equity method investee. + References No definition available. + Details
Name: | fcx_DeferredIntercompanyProfitPercentage
Namespace Prefix: | fcx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Inventory Adjustment + References No definition available. + Details
Name: | fcx_InventoryAdjustment
Namespace Prefix: | fcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=121559654&loc=d3e5710-111685 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of expense for allocation of cost of tangible and intangible assets over their useful lives, and reduction in quantity of natural resource due to consumption directly used in production of good and rendering of service. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(b)(2)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_CostDepreciationAmortizationAndDepletion
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Cost of maintenance incurred and directly related to good produced and service rendered. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(b)(2)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_CostMaintenance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Cost of product sold and service rendered, excluding depreciation, depletion, and amortization. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(2)(a)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(2)(d)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109237650&loc=d3e13064-110858 Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859 + Details
Name: | us-gaap_EnvironmentalRemediationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62136-109447 + Details
Name: | us-gaap_ExplorationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
Name: | us-gaap_GainLossOnDispositionOfAssets1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.7) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32672-109319 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120385591&loc=d3e38679-109324 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(9)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22658-107794 + Details
Name: | us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net amount of operating interest income (expense). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.10) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
Name: | us-gaap_InterestIncomeExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599 + Details
Name: | us-gaap_NumberOfOperatingSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireProductiveAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-05(b)(2)) -URI http://asc.fasb.org/extlink&oid=120399901&loc=d3e537907-122884 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_SellingGeneralAndAdministrativeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=srt_NorthAmericaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=srt_SouthAmericaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=fcx_CorporateAndEliminationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_IntersegmentEliminationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=fcx_PTSmeltingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srt_AffiliatedEntityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fcx_MorenciMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fcx_OtherMinesNorthAmericaCopperMinesSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fcx_OtherIndividuallyImmaterialOperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fcx_CerroVerdeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fcx_GrasbergSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_ID
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fcx_MolybdenumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fcx_RodAndRefiningSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fcx_AtlanticCopperSmeltingAndRefiningSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fcx_CorporateAndEliminationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fcx_MiamiSmelterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |