XML 159 R118.htm IDEA: XBRL DOCUMENT
v3.10.0.1

BUSINESS SEGMENTS INFORMATION (Segment Reporting) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended | 24 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Sep. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 3,684 | $ 4,908 | $ 5,168 | $ 4,868 | $ 5,041 | $ 4,310 | $ 3,711 | $ 3,341 |  | $ 18,628 | $ 16,403 | $ 14,830 |
Production and delivery |  |  |  |  |  |  |  |  |  | 11,691 | 10,266 | 10,687 |
Cost, Depreciation, Amortization and Depletion |  |  |  |  |  |  |  |  |  | 1,754 | 1,714 | 2,530 |
Impairment of oil and gas properties |  |  |  |  |  |  |  |  |  | 0 | 0 | 4,317 |
Metals inventory adjustments |  |  | 12 |  |  |  |  |  |  | 4 | 8 | 36 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 443 | 477 | 597 |
Exploration Expense |  |  |  |  |  |  |  |  |  | 105 | 93 | 63 |
Environmental obligations and shutdown costs |  |  |  |  |  |  |  |  |  | 89 | 244 | 14 |
Net gain on sales of assets | (82) | (70) | (45) | (11) | (15) | (33) | (10) | (23) |  | (208) | (81) | (649) |
Change in PT-FI tax rates |  |  |  |  |  |  |  |  |  | 504 | 0 | 0 |
Operating income (loss) | 316 | $ 1,315 | $ 1,664 | $ 1,459 | 1,479 | $ 928 | $ 686 | $ 597 |  | 4,754 | 3,690 | (2,729) |
Interest expense, net |  |  |  |  |  |  |  |  |  | 945 | 801 | 755 |
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  |  | (991) | (883) | (371) |
Total assets | 42,216 |  |  |  | 37,302 |  |  |  |  | 42,216 | 37,302 | 37,317 | $ 42,216
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 1,971 | 1,410 | 2,813 |
Grasberg Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 1,001 | 875 | 1,025 |
Molybdenum |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 9 | 5 | 2 |
South America |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 237 | 115 | 382 |
North America copper mines |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 601 | 167 | 102 |
Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 2,226 | 2,023 | 1,402 |
Production and delivery | 62 |  |  |  |  |  |  |  |  |  |  |  |
Operating Segments | Molybdenum |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Production and delivery |  |  |  |  |  |  |  |  |  | 289 | 227 | 212 |
Cost, Depreciation, Amortization and Depletion |  |  |  |  |  |  |  |  |  | 79 | 76 | 68 |
Impairment of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | 0 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Exploration Expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Environmental obligations and shutdown costs |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Operating income (loss) |  |  |  |  |  |  |  |  |  | 42 | (35) | (94) |
Interest expense, net |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Total assets | 1,796 |  |  |  | 1,858 |  |  |  |  | 1,796 | 1,858 | 1,934 | 1,796
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 9 | 5 | 2 |
Operating Segments | Rod & Refining |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 5,103 | 4,456 | 3,833 |
Production and delivery |  |  |  |  |  |  |  |  |  | 5,117 | 4,467 | 3,833 |
Cost, Depreciation, Amortization and Depletion |  |  |  |  |  |  |  |  |  | 11 | 10 | 10 |
Impairment of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | 0 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Exploration Expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Environmental obligations and shutdown costs |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Operating income (loss) |  |  |  |  |  |  |  |  |  | 6 | 5 | 19 |
Interest expense, net |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Total assets | 233 |  |  |  | 277 |  |  |  |  | 233 | 277 | 220 | 233
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 5 | 4 | 1 |
Operating Segments | Atlantic Copper Smelting & Refining |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 2,299 | 2,031 | 1,825 |
Production and delivery |  |  |  |  |  |  |  |  |  | 2,218 | 1,966 | 1,712 |
Cost, Depreciation, Amortization and Depletion |  |  |  |  |  |  |  |  |  | 27 | 28 | 29 |
Impairment of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | 0 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 21 | 18 | 17 |
Exploration Expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Environmental obligations and shutdown costs |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Operating income (loss) |  |  |  |  |  |  |  |  |  | 36 | 20 | 72 |
Interest expense, net |  |  |  |  |  |  |  |  |  | 25 | 18 | 15 |
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  |  | (1) | (5) | (9) |
Total assets | 773 |  |  |  | 822 |  |  |  |  | 773 | 822 | 658 | 773
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 16 | 41 | 17 |
Operating Segments | North America |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 144 | 408 | 684 |
Production and delivery |  |  |  |  |  |  |  |  |  | 3,128 | 2,745 | 2,914 |
Cost, Depreciation, Amortization and Depletion |  |  |  |  |  |  |  |  |  | 360 | 425 | 530 |
Impairment of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | 0 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 6 | 4 | 5 |
Exploration Expense |  |  |  |  |  |  |  |  |  | 3 | 2 | 3 |
Environmental obligations and shutdown costs |  |  |  |  |  |  |  |  |  | 2 | 0 | 0 |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  | 0 | 0 | (576) |
Operating income (loss) |  |  |  |  |  |  |  |  |  | 1,195 | 1,389 | 1,498 |
Interest expense, net |  |  |  |  |  |  |  |  |  | 4 | 4 | 4 |
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Total assets | 7,530 |  |  |  | 7,102 |  |  |  |  | 7,530 | 7,102 | 7,311 | 7,530
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 601 | 167 | 102 |
Operating Segments | North America | Morenci |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 90 | 228 | 444 |
Production and delivery |  |  |  |  |  |  |  |  |  | 1,183 | 1,043 | 1,162 |
Cost, Depreciation, Amortization and Depletion |  |  |  |  |  |  |  |  |  | 176 | 178 | 217 |
Impairment of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | 0 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 3 | 2 | 2 |
Exploration Expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Environmental obligations and shutdown costs |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  | 0 | 0 | (576) |
Operating income (loss) |  |  |  |  |  |  |  |  |  | 779 | 870 | 1,150 |
Interest expense, net |  |  |  |  |  |  |  |  |  | 3 | 3 | 3 |
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Total assets | 2,922 |  |  |  | 2,861 |  |  |  |  | 2,922 | 2,861 | 2,863 | 2,922
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 216 | 114 | 77 |
Operating Segments | North America | Other |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 54 | 180 | 240 |
Production and delivery |  |  |  |  |  |  |  |  |  | 1,945 | 1,702 | 1,752 |
Cost, Depreciation, Amortization and Depletion |  |  |  |  |  |  |  |  |  | 184 | 247 | 313 |
Impairment of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | 0 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 3 | 2 | 3 |
Exploration Expense |  |  |  |  |  |  |  |  |  | 3 | 2 | 3 |
Environmental obligations and shutdown costs |  |  |  |  |  |  |  |  |  | 2 | 0 | 0 |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Operating income (loss) |  |  |  |  |  |  |  |  |  | 416 | 519 | 348 |
Interest expense, net |  |  |  |  |  |  |  |  |  | 1 | 1 | 1 |
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Total assets | 4,608 |  |  |  | 4,241 |  |  |  |  | 4,608 | 4,241 | 4,448 | 4,608
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 385 | 53 | 25 |
Operating Segments | South America |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 3,303 | 3,309 | 2,751 |
Production and delivery |  |  |  |  |  |  |  |  |  | 2,365 | 2,244 | 1,758 |
Cost, Depreciation, Amortization and Depletion |  |  |  |  |  |  |  |  |  | 546 | 525 | 553 |
Impairment of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | 0 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 9 | 9 | 9 |
Exploration Expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Environmental obligations and shutdown costs |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Operating income (loss) |  |  |  |  |  |  |  |  |  | 735 | 916 | 618 |
Interest expense, net |  |  |  |  |  |  |  |  |  | 429 | 212 | 82 |
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  |  | (268) | (446) | (216) |
Total assets | 10,231 |  |  |  | 10,580 |  |  |  |  | 10,231 | 10,580 | 10,609 | 10,231
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 237 | 115 | 382 |
Operating Segments | South America | Cerro Verde |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 2,709 | 2,811 | 2,241 |
Production and delivery |  |  |  |  |  |  |  |  |  | 1,887 | 1,878 | 1,351 |
Cost, Depreciation, Amortization and Depletion |  |  |  |  |  |  |  |  |  | 456 | 441 | 443 |
Impairment of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | 0 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 9 | 9 | 8 |
Exploration Expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Environmental obligations and shutdown costs |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Operating income (loss) |  |  |  |  |  |  |  |  |  | 709 | 868 | 626 |
Interest expense, net |  |  |  |  |  |  |  |  |  | 429 | 212 | 82 |
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  |  | (253) | (436) | (222) |
Total assets | 8,524 |  |  |  | 8,878 |  |  |  |  | 8,524 | 8,878 | 9,076 | 8,524
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 220 | 103 | 380 |
Operating Segments | South America | Other |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 594 | 498 | 510 |
Production and delivery |  |  |  |  |  |  |  |  |  | 478 | 366 | 407 |
Cost, Depreciation, Amortization and Depletion |  |  |  |  |  |  |  |  |  | 90 | 84 | 110 |
Impairment of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | 0 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 0 | 0 | 1 |
Exploration Expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Environmental obligations and shutdown costs |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Operating income (loss) |  |  |  |  |  |  |  |  |  | 26 | 48 | (8) |
Interest expense, net |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  |  | (15) | (10) | 6 |
Total assets | 1,707 |  |  |  | 1,702 |  |  |  |  | 1,707 | 1,702 | 1,533 | 1,707
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 17 | 12 | 2 |
Operating Segments | Indonesia | Grasberg Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 5,446 | 4,445 | 3,233 |
Production and delivery |  |  |  |  |  |  |  |  |  | 1,864 | 1,735 | 1,775 |
Cost, Depreciation, Amortization and Depletion |  |  |  |  |  |  |  |  |  | 606 | 556 | 384 |
Impairment of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | 0 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 123 | 126 | 88 |
Exploration Expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Environmental obligations and shutdown costs |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Adjustment to Historical Tax Positions |  |  |  |  |  |  |  |  |  | 20 |  |  |
Operating income (loss) |  |  |  |  |  |  |  |  |  | 2,966 | 2,028 | 1,048 |
Interest expense, net |  |  |  |  |  |  |  |  |  | 1 | 4 | 0 |
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  |  | (755) | (869) | (442) |
Total assets | 15,646 |  |  |  | 10,911 |  |  |  |  | 15,646 | 10,911 | 10,493 | 15,646
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 1,001 | 875 | 1,025 |
Corporate And Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 2,333 | 1,754 | 2,504 |
Production and delivery |  |  |  |  |  |  |  |  |  | (3,290) | (3,118) | (1,517) |
Cost, Depreciation, Amortization and Depletion |  |  |  |  |  |  |  |  |  | 125 | 94 | 956 |
Impairment of oil and gas properties |  |  |  |  |  |  |  |  |  |  |  | 4,317 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 284 | 320 | 478 |
Exploration Expense |  |  |  |  |  |  |  |  |  | 102 | 91 | 60 |
Environmental obligations and shutdown costs |  |  |  |  |  |  |  |  |  | 87 | 244 | 14 |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  | (208) | (81) | (73) |
Operating income (loss) |  |  |  |  |  |  |  |  |  | (226) | (633) | (5,890) |
Interest expense, net |  |  |  |  |  |  |  |  |  | 486 | 563 | 654 |
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  |  | 33 | 437 | 296 |
Total assets | 6,007 |  |  |  | $ 5,752 |  |  |  |  | 6,007 | 5,752 | 6,092 | 6,007
Payments to Acquire Productive Assets |  |  |  |  |  |  |  |  |  | 102 | 203 | 1,284 |
Corporate And Eliminations [Member] | United States oil and gas operations |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on energy contracts |  |  |  |  |  |  |  |  |  |  |  | 35 |
Oil and Gas drillship settlements, idle rig credits (costs) and inventory adjustments |  |  |  |  |  |  |  |  |  |  |  | 1,000 |
Restructuring charges |  |  |  |  |  |  |  |  |  |  |  | (85) |
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  | 1,200 |
Other Mining & Eliminations |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  | 73 |
Intersegment |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Intersegment | Molybdenum |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 410 | 268 | 186 |
Intersegment | Rod & Refining |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 31 | 26 | 29 |
Intersegment | Atlantic Copper Smelting & Refining |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 3 | 1 | 5 |
Intersegment | Corporate And Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | (5,459) | (4,837) | (4,159) |
Intersegment | North America |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 4,550 | 4,157 | 3,690 |
Intersegment | North America | Morenci |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 2,051 | 1,865 | 1,511 |
Intersegment | North America | Other |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 2,499 | 2,292 | 2,179 |
Intersegment | South America |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 352 | 385 | 187 |
Intersegment | South America | Cerro Verde |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 352 | 385 | 187 |
Intersegment | South America | Other |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Intersegment | Indonesia | Grasberg Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 113 | 0 | 62 |
One-time Termination Benefits | Grasberg Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income (loss) |  |  |  |  |  |  |  |  |  |  | (125) |  |
One-time Termination Benefits | Operating Segments | Indonesia | Grasberg Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Production and delivery |  |  |  |  |  |  |  |  |  |  | 120 |  |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  |  | 5 |  |
Royalty Assessments | Operating Segments | South America | Cerro Verde |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Production and delivery |  |  |  |  |  |  |  |  |  |  | 203 |  |
Interest expense, net |  |  |  |  |  |  |  |  |  |  | 145 |  |
Cerro Verde Royalty Dispute | Operating Segments | South America | Cerro Verde |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Production and delivery |  |  |  |  |  |  |  |  |  | 14 |  |  |
Interest expense, net |  |  |  |  |  |  |  |  |  | 370 |  |  |
Cerro Verde Royalty Dispute | Royalty Assessments | Cerro Verde |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Production and delivery |  |  |  |  |  |  |  |  |  | 14 | 203 |  | 217
Interest expense, net |  |  |  |  |  |  |  |  |  | 370 | 145 |  | 515
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  |  | 35 | (7) |  | 28
Kisanfu Exploration Project | Corporate And Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  |  | (13) |  |
Deepwater Gulf of Mexico and Onshore California Oil And Gas Properties [Member] | Corporate And Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  |  | (49) |  |
Onshore California | Corporate And Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  | (31) |  |  |
Freeport Cobalt |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income (loss) |  |  |  |  |  |  |  |  |  | 50 |  |  |
Total assets | 494 |  |  |  |  |  |  |  |  | 494 |  |  | $ 494
Freeport Cobalt | Corporate And Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain on sales of assets |  |  |  |  |  |  |  |  |  | (97) |  |  |
Depreciation Expense on Reclassified Assets | $ 48 |  |  |  |  |  |  |  |  | 31 |  |  |
Cerro Verde Collective Labor Agreement [Member] | Operating Segments | South America | Cerro Verde |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Production and delivery |  |  |  |  |  |  |  |  | $ (69) | (69) |  |  |
Minimum Tax Credit Carryforwards [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign Income Tax Expense (Benefit), Continuing Operations |  |  |  |  |  |  |  |  |  | 47 |  |  |
Federal Income Tax Expense (Benefit), Continuing Operations |  |  |  |  |  |  |  |  |  | 76 | 438 |  |
Tax Authority, In Papau, Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Change in PT-FI tax rates |  |  |  |  |  |  |  |  |  | $ 504 |  |  |
Accounting Standards Update 2017-05 [Member] | Restatement Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Production and delivery |  |  |  |  |  |  |  |  |  |  | (42) | (46) |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  |  | (7) | (10) |
Exploration Expense |  |  |  |  |  |  |  |  |  |  | (1) | (1) |
Environmental obligations and shutdown costs |  |  |  |  |  |  |  |  |  |  | (7) | (6) |
Operating income (loss) |  |  |  |  |  |  |  |  |  |  | $ 57 | $ 63 |

X
- Definition Adjustment to Historical Tax Positions + References No definition available. + Details
Name: | fcx_AdjustmenttoHistoricalTaxPositions
Namespace Prefix: | fcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Oil and Gas drillship settlements, idle rig credits (costs) and inventory adjustments + References No definition available. + Details
Name: | fcx_OilandGasdrillshipsettlementsidlerigcreditscostsandinventoryadjustments
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=6876686&loc=d3e534808-122878 Reference 2: 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=115929826&loc=d3e8736-108599 Reference 3: 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=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of capital expenditure attributable to discontinued operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760 + Details
Name: | us-gaap_CapitalExpenditureDiscontinuedOperations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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=115205541&loc=SL114868664-224227 + Details
Name: | us-gaap_CostDepreciationAmortizationAndDepletion
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate cost of goods produced and sold during the reporting period, excluding depreciation, depletion, and amortization. + References No definition available. + Details
Name: | us-gaap_CostOfGoodsSoldExcludingDepreciationDepletionAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition For the asset that is reclassified back to held and use from held-for-sale, the depreciation expense recognized when the asset is reclassified. This represents the difference between the carrying value at the time the decision to reclassify is made and the carrying amount that the asset would have had if it had never been classified as held for sale (including consideration of depreciation expense). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 35 -Paragraph 44 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=29634951&loc=d3e1756-110224 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2459-110228 + Details
Name: | us-gaap_DepreciationExpenseOnReclassifiedAssets
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 current and deferred federal income tax expense (benefit) attributable to income (loss) from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
Name: | us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of current and deferred foreign income tax expense (benefit) attributable to income (loss) from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations
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=109223946&loc=d3e3602-108585 + Details
Name: | us-gaap_GainLossOnDispositionOfAssets1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 35 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66906256&loc=d3e66150-109466 + Details
Name: | us-gaap_ImpairmentOfOilAndGasProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 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(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: 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=109238882&loc=d3e38679-109324 + Details
Name: | us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e32059-109318 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
Name: | us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate
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=114873765&loc=SL114874048-224260 + Details
Name: | us-gaap_InterestIncomeExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=68049868&loc=SL66093879-108312 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 1C -URI http://asc.fasb.org/extlink&oid=68049868&loc=SL66093883-108312 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66092785&loc=d3e4542-108314 + Details
Name: | us-gaap_InventoryWriteDown
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + 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=109223946&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 expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
Name: | us-gaap_RestructuringCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 3: 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=115929826&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 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 + 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 330 -SubTopic 10 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68048583&loc=d3e3636-108311 Reference 2: 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=115205541&loc=SL114868664-224227 + Details
Name: | us-gaap_SellingGeneralAndAdministrativeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open agreements to purchase or sell energy at some future point, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
Name: | us-gaap_UnrealizedGainLossOnEnergyContracts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fcx_NorthAmericaCopperMinesSegmentMember
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: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
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: | srt_StatementGeographicalAxis=srt_NorthAmericaMember
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_OtherIndividuallyImmaterialOperatingSegmentsMember
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: | us-gaap_StatementBusinessSegmentsAxis=fcx_CerroVerdeMember
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: | us-gaap_StatementBusinessSegmentsAxis=fcx_OilAndGasOperationsSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_OneTimeTerminationBenefitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=fcx_RoyaltyAssessmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=fcx_CerroVerdeRoyaltyDisputeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=fcx_RoyaltyAssessmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=fcx_KisanfuExplorationProjectMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=fcx_GulfofMexicoShelfandMaddenpropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=fcx_OnshoreCaliforniaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=fcx_FreeportCobaltMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollectiveBargainingArrangementAxis=fcx_CerroVerdeCollectiveLaborAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxCreditCarryforwardAxis=fcx_MinimumTaxCreditCarryforwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=fcx_TaxAuthorityInPapauIndonesiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201705Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RestatementAxis=srt_RestatementAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |