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Guarantor Financial Statements (Unaudited) Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Millions | Mar. 31, 2016 | Dec. 31, 2015 | Mar. 31, 2015
--- | --- | --- | ---
ASSETS |  |  |  |
Current assets, other than assets held for sale |  | $ 6,470 | $ 6,718 |
Current assets held for sale |  | 763 | 744 |
Property, plant, equipment and mining development costs, net |  | 24,132 | 24,246 |
Oil and gas properties, net - full cost method |  |  |  |
Subject to amortization, less accumulated amortization and impairment |  | 1,700 | 2,262 |
Not subject to amortization |  | 1,743 | 4,831 |
Investments in consolidated subsidiaries |  | 0 | 0 |
Other assets |  | 3,742 | 3,652 |
Long-term assets held for sale |  | 4,114 | 4,124 |
Total assets |  | 42,664 | 46,577 | $ 56,065
LIABILITIES AND EQUITY |  |  |  |
Current liabilities, other than liabilities held for sale |  | 4,326 | 4,199 |
Current liabilities held for sale |  | 100 | 108 |
Long-term debt, less current portion |  | 19,638 | 19,779 |
Deferred income taxes |  | 3,765 | 3,607 |
Environmental and asset retirement obligations, less current portion |  | 3,740 | 3,717 |
Investments in consolidated subsidiaries |  | 0 | 0 |
Other liabilities |  | 1,642 | 1,641 |
Long-term liabilities held for sale |  | 716 | 718 |
Total liabilities |  | 33,927 | 33,769 |
Redeemable noncontrolling interest |  | 767 | 764 |
Equity: |  |  |  |
Stockholders' equity |  | 3,692 | 7,828 |
Noncontrolling interests |  | 4,278 | 4,216 |
Total equity |  | 7,970 | 12,044 |
Total liabilities and equity |  | 42,664 | 46,577 |
FCX Issuer [Member] |  |  |  |
ASSETS |  |  |  |
Current assets, other than assets held for sale |  | 272 | 181 |
Current assets held for sale |  | 0 | 0 |
Property, plant, equipment and mining development costs, net |  | 25 | 26 |
Oil and gas properties, net - full cost method |  |  |  |
Subject to amortization, less accumulated amortization and impairment |  | 0 | 0 |
Not subject to amortization |  | 0 | 0 |
Investments in consolidated subsidiaries |  | 20,674 | 24,311 |
Other assets |  | 1,135 | 5,038 |
Long-term assets held for sale |  | 0 | 0 |
Total assets |  | 22,106 | 29,556 |
LIABILITIES AND EQUITY |  |  |  |
Current liabilities, other than liabilities held for sale |  | 2,714 | 6,012 |
Current liabilities held for sale |  | 0 | 0 |
Long-term debt, less current portion |  | 14,599 | 14,735 |
Deferred income taxes | [1] | 1,060 | 941 |
Environmental and asset retirement obligations, less current portion |  | 0 | 0 |
Investments in consolidated subsidiaries |  | 0 | 0 |
Other liabilities |  | 41 | 40 |
Long-term liabilities held for sale |  | 0 | 0 |
Total liabilities |  | 18,414 | 21,728 |
Redeemable noncontrolling interest |  | 0 | 0 |
Equity: |  |  |  |
Stockholders' equity |  | 3,692 | 7,828 |
Noncontrolling interests |  | 0 | 0 |
Total equity |  | 3,692 | 7,828 |
Total liabilities and equity |  | 22,106 | 29,556 |
FM O&G LLC Guarantor [Member] |  |  |  |
ASSETS |  |  |  |
Current assets, other than assets held for sale |  | 2,600 | 3,831 |
Current assets held for sale |  | 0 | 0 |
Property, plant, equipment and mining development costs, net |  | 59 | 57 |
Oil and gas properties, net - full cost method |  |  |  |
Subject to amortization, less accumulated amortization and impairment |  | 517 | 710 |
Not subject to amortization |  | 415 | 1,393 |
Investments in consolidated subsidiaries |  | 0 | 0 |
Other assets |  | 34 | 1,826 |
Long-term assets held for sale |  | 0 | 0 |
Total assets |  | 3,625 | 7,817 |
LIABILITIES AND EQUITY |  |  |  |
Current liabilities, other than liabilities held for sale |  | 660 | 666 |
Current liabilities held for sale |  | 0 | 0 |
Long-term debt, less current portion |  | 6,592 | 5,883 |
Deferred income taxes |  | 0 | 0 |
Environmental and asset retirement obligations, less current portion |  | 310 | 305 |
Investments in consolidated subsidiaries |  | 483 | 0 |
Other liabilities |  | 3,355 | 3,360 |
Long-term liabilities held for sale |  | 0 | 0 |
Total liabilities |  | 11,400 | 10,214 |
Redeemable noncontrolling interest |  | 0 | 0 |
Equity: |  |  |  |
Stockholders' equity |  | (7,775) | (2,397) |
Noncontrolling interests |  | 0 | 0 |
Total equity |  | (7,775) | (2,397) |
Total liabilities and equity |  | 3,625 | 7,817 |
Non-Guarantor Subsidiaries [Member] |  |  |  |
ASSETS |  |  |  |
Current assets, other than assets held for sale |  | 7,329 | 10,238 |
Current assets held for sale |  | 763 | 744 |
Property, plant, equipment and mining development costs, net |  | 24,048 | 24,163 |
Oil and gas properties, net - full cost method |  |  |  |
Subject to amortization, less accumulated amortization and impairment |  | 1,183 | 1,552 |
Not subject to amortization |  | 1,326 | 3,432 |
Investments in consolidated subsidiaries |  | 0 | 0 |
Other assets |  | 3,663 | 3,586 |
Long-term assets held for sale |  | 4,114 | 4,124 |
Total assets |  | 42,426 | 47,839 |
LIABILITIES AND EQUITY |  |  |  |
Current liabilities, other than liabilities held for sale |  | 4,682 | 5,047 |
Current liabilities held for sale |  | 100 | 108 |
Long-term debt, less current portion |  | 11,818 | 11,594 |
Deferred income taxes |  | 2,705 | 2,666 |
Environmental and asset retirement obligations, less current portion |  | 3,430 | 3,412 |
Investments in consolidated subsidiaries |  | 7,775 | 2,397 |
Other liabilities |  | 1,734 | 1,732 |
Long-term liabilities held for sale |  | 716 | 718 |
Total liabilities |  | 32,960 | 27,674 |
Redeemable noncontrolling interest |  | 767 | 764 |
Equity: |  |  |  |
Stockholders' equity |  | 4,966 | 15,725 |
Noncontrolling interests |  | 3,733 | 3,676 |
Total equity |  | 8,699 | 19,401 |
Total liabilities and equity |  | 42,426 | 47,839 |
Eliminations [Member] |  |  |  |
ASSETS |  |  |  |
Current assets, other than assets held for sale |  | (3,731) | (7,532) |
Current assets held for sale |  | 0 | 0 |
Property, plant, equipment and mining development costs, net |  | 0 | 0 |
Oil and gas properties, net - full cost method |  |  |  |
Subject to amortization, less accumulated amortization and impairment |  | 0 | 0 |
Not subject to amortization |  | 2 | 6 |
Investments in consolidated subsidiaries |  | (20,674) | (24,311) |
Other assets |  | (1,090) | (6,798) |
Long-term assets held for sale |  | 0 | 0 |
Total assets |  | (25,493) | (38,635) |
LIABILITIES AND EQUITY |  |  |  |
Current liabilities, other than liabilities held for sale |  | (3,730) | (7,526) |
Current liabilities held for sale |  | 0 | 0 |
Long-term debt, less current portion |  | (13,371) | (12,433) |
Deferred income taxes |  | 0 | 0 |
Environmental and asset retirement obligations, less current portion |  | 0 | 0 |
Investments in consolidated subsidiaries |  | (8,258) | (2,397) |
Other liabilities |  | (3,488) | (3,491) |
Long-term liabilities held for sale |  | 0 | 0 |
Total liabilities |  | (28,847) | (25,847) |
Redeemable noncontrolling interest |  | 0 | 0 |
Equity: |  |  |  |
Stockholders' equity |  | 2,809 | (13,328) |
Noncontrolling interests |  | 545 | 540 |
Total equity |  | 3,354 | (12,788) |
Total liabilities and equity |  | $ (25,493) | $ (38,635) |
[1] | All U.S. related deferred income taxes are recorded at the parent company.

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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E + Details
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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4I -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4590271-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=51664549&loc=SL4568740-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=51664549&loc=SL4568447-111683 + Details
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