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Fair Value Measurement (Fair Value Measurement Inputs) (Details) $ in Millions | 3 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2019 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2018 USD ($) $ / bbl | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2016 USD ($) $ / bbl | Nov. 16, 2016 USD ($) $ / lb
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |  |
Other Assets, Current | $ 560 |  | $ 422 |  |  |  |
Other assets | 2,174 |  | 2,172 |  |  |  |
Proceeds from Sale of Other Assets, contingent consideration | 84 | $ 0 |  |  |  |  |
Assets | 41,059 | $ 36,637 | 42,216 |  |  |  |
Derivative Liability, Fair Value, Gross Liability | 15 |  | 48 |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 93 |  | 16 |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 13 |  | 41 |  |  |  |
Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Investments, Fair Value Disclosure | 25 |  | 25 |  |  |  |
Trust Assets Fair Value Disclosure | 57 |  | 55 |  |  |  |
Level 1 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Investments, Fair Value Disclosure | 4 |  | 4 |  |  |  |
Trust Assets Fair Value Disclosure | 6 |  | 5 |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 8 |  | 0 |  |  |  |
Contingent Receivable | 0 |  | 0 |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 0 |  | 7 |  |  |  |
Long-term debt, including current portion | 0 |  | 0 |  |  |  |
Level 2 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Investments, Fair Value Disclosure | 0 |  | 0 |  |  |  |
Trust Assets Fair Value Disclosure | 123 |  | 121 |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 174 |  | 96 |  |  |  |
Contingent Receivable | 0 |  | 0 |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 15 |  | 41 |  |  |  |
Long-term debt, including current portion | 9,659 |  | 10,238 |  |  |  |
Level 3 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Investments, Fair Value Disclosure | 0 |  | 0 |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 0 |  | 0 |  |  |  |
Contingent Receivable | 117 |  | 127 |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 0 |  | 0 |  |  |  |
Long-term debt, including current portion | 0 |  | 0 |  |  |  |
Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Investments, Fair Value Disclosure | 29 |  | 29 |  |  |  |
Trust Assets Fair Value Disclosure | 186 |  | 181 |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 182 |  | 96 |  |  |  |
Contingent Receivable | 117 |  | 127 |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 15 |  | 48 |  |  |  |
Long-term debt, including current portion | 9,659 |  | 10,238 |  |  |  |
Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Investments, Fair Value Disclosure | 29 |  | 29 |  |  |  |
Trust Assets Fair Value Disclosure | 186 |  | 181 |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 182 |  | 96 |  |  |  |
Contingent Receivable | 138 |  | 143 |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 15 |  | 48 |  |  |  |
Long-term debt, including current portion | 9,905 |  | 11,141 |  |  |  |
Embedded Derivative Financial Instruments [Member] |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |  |
Derivative Liability, Fair Value, Gross Liability | 14 |  | 39 |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 84 |  | 16 |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 13 |  | 32 |  |  |  |
Embedded Derivative Financial Instruments [Member] | Level 1 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 0 |  | 0 |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 0 |  | 0 |  |  |  |
Embedded Derivative Financial Instruments [Member] | Level 2 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 85 |  | 23 |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 14 |  | 39 |  |  |  |
Embedded Derivative Financial Instruments [Member] | Level 3 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 0 |  | 0 |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 0 |  | 0 |  |  |  |
Embedded Derivative Financial Instruments [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 85 |  | 23 |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 14 |  | 39 |  |  |  |
Embedded Derivative Financial Instruments [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 85 |  | 23 |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 14 |  | 39 |  |  |  |
Forward Contracts [Member] | Level 1 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 0 |  |  |  |  |  |
Forward Contracts [Member] | Level 2 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 1 |  |  |  |  |  |
Forward Contracts [Member] | Level 3 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 0 |  |  |  |  |  |
Forward Contracts [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 1 |  |  |  |  |  |
Forward Contracts [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 1 |  |  |  |  |  |
Commodity Contract [Member] |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |  |
Derivative Liability, Fair Value, Gross Liability | 1 |  | 9 |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 9 |  | 0 |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 0 |  | 9 |  |  |  |
Commodity Contract [Member] | Level 1 |  |  |  |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 0 |  | 7 |  |  |  |
Commodity Contract [Member] | Level 2 |  |  |  |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 1 |  | 2 |  |  |  |
Commodity Contract [Member] | Level 3 |  |  |  |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 0 |  | 0 |  |  |  |
Commodity Contract [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 1 |  | 9 |  |  |  |
Commodity Contract [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability | 1 |  | 9 |  |  |  |
Future [Member] | Level 1 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 8 |  |  |  |  |  |
Future [Member] | Level 2 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 1 |  |  |  |  |  |
Future [Member] | Level 3 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 0 |  |  |  |  |  |
Future [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 9 |  |  |  |  |  |
Future [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 9 |  |  |  |  |  |
Africa and onshore California [Member] | Commodity Contract [Member] | Level 1 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 0 |  | 0 |  |  |  |
Africa and onshore California [Member] | Commodity Contract [Member] | Level 2 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 87 |  | 73 |  |  |  |
Africa and onshore California [Member] | Commodity Contract [Member] | Level 3 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 0 |  | 0 |  |  |  |
Africa and onshore California [Member] | Commodity Contract [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 87 |  | 73 |  |  |  |
Africa and onshore California [Member] | Commodity Contract [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset | 87 |  | 73 |  |  |  |
U.S. core fixed income fund [Member] | Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Marketable Securities | 25 |  | 25 |  |  |  |
Trust Assets Fair Value Disclosure | 57 |  | 55 |  |  |  |
U.S. core fixed income fund [Member] | Level 1 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Marketable Securities | 0 |  | 0 |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
U.S. core fixed income fund [Member] | Level 2 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Marketable Securities | 0 |  | 0 |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
U.S. core fixed income fund [Member] | Level 3 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Marketable Securities | 0 |  | 0 |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
U.S. core fixed income fund [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Marketable Securities | 25 |  | 25 |  |  |  |
Trust Assets Fair Value Disclosure | 57 |  | 55 |  |  |  |
U.S. core fixed income fund [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Marketable Securities | 25 |  | 25 |  |  |  |
Trust Assets Fair Value Disclosure | 57 |  | 55 |  |  |  |
Equity securities | Level 1 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Marketable Securities | 4 |  | 4 |  |  |  |
Equity securities | Level 2 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Marketable Securities | 0 |  | 0 |  |  |  |
Equity securities | Level 3 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Marketable Securities | 0 |  | 0 |  |  |  |
Equity securities | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Marketable Securities | 4 |  | 4 |  |  |  |
Equity securities | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Marketable Securities | 4 |  | 4 |  |  |  |
Government bonds | Level 1 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Government bonds | Level 2 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 33 |  | 36 |  |  |  |
Government bonds | Level 3 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Government bonds | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 33 |  | 36 |  |  |  |
Government bonds | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 33 |  | 36 |  |  |  |
Corporate bonds [Member] | Level 1 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Corporate bonds [Member] | Level 2 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 29 |  | 28 |  |  |  |
Corporate bonds [Member] | Level 3 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Corporate bonds [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 29 |  | 28 |  |  |  |
Corporate bonds [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 29 |  | 28 |  |  |  |
Government mortgage-backed securities [Member] | Level 1 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Government mortgage-backed securities [Member] | Level 2 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 41 |  | 38 |  |  |  |
Government mortgage-backed securities [Member] | Level 3 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Government mortgage-backed securities [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 41 |  | 38 |  |  |  |
Government mortgage-backed securities [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 41 |  | 38 |  |  |  |
Asset-backed securities [Member] | Level 1 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Asset-backed securities [Member] | Level 2 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 12 |  | 11 |  |  |  |
Asset-backed securities [Member] | Level 3 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Asset-backed securities [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 12 |  | 11 |  |  |  |
Asset-backed securities [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 12 |  | 11 |  |  |  |
Money market funds [Member] | Level 1 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 6 |  | 5 |  |  |  |
Money market funds [Member] | Level 2 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Money market funds [Member] | Level 3 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Money market funds [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 6 |  | 5 |  |  |  |
Money market funds [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 6 |  | 5 |  |  |  |
Collateralized Mortgage Backed Securities [Member] | Level 1 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Collateralized Mortgage Backed Securities [Member] | Level 2 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 7 |  | 7 |  |  |  |
Collateralized Mortgage Backed Securities [Member] | Level 3 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Collateralized Mortgage Backed Securities [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 7 |  | 7 |  |  |  |
Collateralized Mortgage Backed Securities [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 7 |  | 7 |  |  |  |
Municipal bonds [Member] | Level 1 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Municipal bonds [Member] | Level 2 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 1 |  | 1 |  |  |  |
Municipal bonds [Member] | Level 3 |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  | 0 |  |  |  |
Municipal bonds [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 1 |  | 1 |  |  |  |
Municipal bonds [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 1 |  | 1 |  |  |  |
Bank Time Deposits [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |  |
Other Assets, Current | 115 |  | 109 |  |  |  |
Other assets | 163 |  | 126 |  |  |  |
Not Designated as Hedging Instrument [Member] | Embedded Derivative Financial Instruments [Member] |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |  |
Derivative Liability, Fair Value, Gross Liability | 14 |  | 39 |  |  |  |
TF Holdings Limited | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |  |
Other assets | 58 |  | 57 |  |  |  |
Derivatives: |  |  |  |  |  |  |
Contingent Receivable |  |  |  |  |  |  | $ 120
Copper | TF Holdings Limited | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Contingent Receivable |  |  |  |  |  |  | 60
Cobalt | TF Holdings Limited | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Contingent Receivable |  |  |  |  |  |  | $ 60
Contingent consideration, reference threshold (in us dollars per pound) | $ / lb |  |  |  |  |  |  | 20
Freeport-McMoRan Oil & Gas | Onshore California [Member] |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |  |
Other Assets, Current | 13 |  |  |  |  |  |
Other assets | 16 |  | 16 |  |  |  |
Proceeds from Sale of Other Assets, contingent consideration | 50 |  |  |  |  |  |
Assets | 29 |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Contingent Receivable | 150 |  |  |  |  |  |
Discontinued Operation, Contingent Receivable, Per Year |  |  | 50 |  |  |  |
Freeport-McMoRan Oil & Gas | Deepwater Gulf of Mexico Interests [Member] |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |  |
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Derivatives: |  |  |  |  |  |  |
Contingent Receivable |  |  |  |  |  | $ 150 |
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Derivatives: |  |  |  |  |  |  |
Contingent Receivable |  |  |  | $ 50 | $ 50 |  |
Crude Oil [Member] | Freeport-McMoRan Oil & Gas | Onshore California [Member] |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
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Derivatives: |  |  |  |  |  |  |
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