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v3.20.1

Fair Value Measurement (Fair Value Measurement Inputs) (Details) $ in Millions | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2020 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 $ / bbl | Dec. 31, 2016 USD ($) $ / bbl
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |
Other Assets, Current | $ 795 |  |  | $ 655 |  |
Other assets | 1,691 |  |  | 1,885 |  |
Proceeds from Sale of Other Assets, contingent consideration | 66 | $ 84 |  |  |  |
Derivative Liability, Fair Value, Gross Liability | 147 |  |  | 21 |  |
Investment securities (current and long-term): |  |  |  |  |  |
Marketable Securities | 0 |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 36 |  |  | 74 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | 145 |  |  | 21 |  |
Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |
Discontinued Operation, Contingent Receivable | 0 |  |  | 0 |  |
Investment securities (current and long-term): |  |  |  |  |  |
Investments, Fair Value Disclosure | 28 |  |  | 27 |  |
Trust Assets Fair Value Disclosure | 60 |  |  | 59 |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 0 |  |  | 0 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | 0 |  |  | 0 |  |
Long-term debt, including current portion | 0 |  |  | 0 |  |
Level 1 |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |
Discontinued Operation, Contingent Receivable | 0 |  |  | 0 |  |
Investment securities (current and long-term): |  |  |  |  |  |
Investments, Fair Value Disclosure | 3 |  |  | 4 |  |
Trust Assets Fair Value Disclosure | 8 |  |  | 3 |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 1 |  |  | 5 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | (25) |  |  | 0 |  |
Long-term debt, including current portion | 0 |  |  | 0 |  |
Level 2 |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |
Discontinued Operation, Contingent Receivable | 0 |  |  | 0 |  |
Investment securities (current and long-term): |  |  |  |  |  |
Investments, Fair Value Disclosure | 0 |  |  | 0 |  |
Trust Assets Fair Value Disclosure | 132 |  |  | 134 |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 37 |  |  | 80 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | (122) |  |  | 21 |  |
Long-term debt, including current portion | 9,530 |  |  | 10,239 |  |
Level 3 |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |
Discontinued Operation, Contingent Receivable | 78 |  |  | 108 |  |
Investment securities (current and long-term): |  |  |  |  |  |
Investments, Fair Value Disclosure | 0 |  |  | 0 |  |
Trust Assets Fair Value Disclosure | 0 |  |  | 0 |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 0 |  |  | 0 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | 0 |  |  | 0 |  |
Long-term debt, including current portion | 0 |  |  | 0 |  |
Estimate of Fair Value Measurement [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |
Discontinued Operation, Contingent Receivable | 78 |  |  | 108 |  |
Investment securities (current and long-term): |  |  |  |  |  |
Investments, Fair Value Disclosure | 31 |  |  | 31 |  |
Trust Assets Fair Value Disclosure | 200 |  |  | 196 |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 38 |  |  | 85 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | (147) |  |  | 21 |  |
Long-term debt, including current portion | 9,530 |  |  | 10,239 |  |
Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |
Discontinued Operation, Contingent Receivable | 119 |  |  | 122 |  |
Investment securities (current and long-term): |  |  |  |  |  |
Investments, Fair Value Disclosure | 31 |  |  | 31 |  |
Trust Assets Fair Value Disclosure | 200 |  |  | 196 |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 38 |  |  | 85 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | (147) |  |  | 21 |  |
Long-term debt, including current portion | 10,074 |  |  | 9,826 |  |
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 | 119 |  |  | 20 |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 33 |  |  | 68 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | 118 |  |  | 20 |  |
Embedded Derivative Financial Instruments [Member] | Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 0 |  |  | 0 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | 0 |  |  | 0 |  |
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 | 34 |  |  | 68 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | (119) |  |  | 20 |  |
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 | 34 |  |  | 68 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | (119) |  |  | 20 |  |
Embedded Derivative Financial Instruments [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 34 |  |  | 68 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | (119) |  |  | 20 |  |
Forward Contracts [Member] | Level 1 |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 1 |  |  |  |  |
Forward Contracts [Member] | Level 2 |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 3 |  |  |  |  |
Forward Contracts [Member] | Level 3 |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 0 |  |  |  |  |
Forward Contracts [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 4 |  |  |  |  |
Forward Contracts [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 4 |  |  |  |  |
Commodity Contract [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |
Derivative Liability, Fair Value, Gross Liability | 28 |  |  | 1 |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | 3 |  |  | 6 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | 27 |  |  | 1 |  |
Commodity Contract [Member] | Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | 0 |  |  | 0 |  |
Commodity Contract [Member] | Level 1 |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset |  |  |  | 5 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | (25) |  |  | 0 |  |
Commodity Contract [Member] | Level 2 |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset |  |  |  | 1 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | (3) |  |  | 1 |  |
Commodity Contract [Member] | Level 3 |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset |  |  |  | 0 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | 0 |  |  | 0 |  |
Commodity Contract [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset |  |  |  | 6 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | (28) |  |  | 1 |  |
Commodity Contract [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset |  |  |  | 6 |  |
Derivatives: [Abstract] |  |  |  |  |  |
Derivative Liability | (28) |  |  | 1 |  |
Africa and onshore California [Member] | Commodity Contract [Member] | Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset |  |  |  | 0 |  |
Africa and onshore California [Member] | Commodity Contract [Member] | Level 1 |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset |  |  |  | 0 |  |
Africa and onshore California [Member] | Commodity Contract [Member] | Level 2 |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset |  |  |  | 11 |  |
Africa and onshore California [Member] | Commodity Contract [Member] | Level 3 |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset |  |  |  | 0 |  |
Africa and onshore California [Member] | Commodity Contract [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset |  |  |  | 11 |  |
Africa and onshore California [Member] | Commodity Contract [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset |  |  |  | 11 |  |
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 | 28 |  |  | 27 |  |
Trust Assets Fair Value Disclosure | 60 |  |  | 59 |  |
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 | 28 |  |  | 27 |  |
Trust Assets Fair Value Disclosure | 60 |  |  | 59 |  |
U.S. core fixed income fund [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Marketable Securities | 28 |  |  | 27 |  |
Trust Assets Fair Value Disclosure | 60 |  |  | 59 |  |
Equity securities | Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Marketable Securities |  |  |  | 0 |  |
Equity securities | Level 1 |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Marketable Securities | 3 |  |  | 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 | 3 |  |  | 4 |  |
Equity securities | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Marketable Securities | 3 |  |  | 4 |  |
Government bonds | Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  |  | 0 |  |
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 | 22 |  |  | 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 | 22 |  |  | 36 |  |
Government bonds | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 22 |  |  | 36 |  |
Corporate bonds [Member] | Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  |  | 0 |  |
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 | 39 |  |  | 33 |  |
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 | 39 |  |  | 33 |  |
Corporate bonds [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 39 |  |  | 33 |  |
Government mortgage-backed securities [Member] | Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  |  | 0 |  |
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 | 55 |  |  | 43 |  |
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 | 55 |  |  | 43 |  |
Government mortgage-backed securities [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 55 |  |  | 43 |  |
Asset-backed securities [Member] | Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  |  | 0 |  |
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 | 11 |  |  | 14 |  |
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 | 11 |  |  | 14 |  |
Asset-backed securities [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 11 |  |  | 14 |  |
Money market funds [Member] | Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  |  | 0 |  |
Money market funds [Member] | Level 1 |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 8 |  |  | 3 |  |
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 | 8 |  |  | 3 |  |
Money market funds [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 8 |  |  | 3 |  |
Collateralized Mortgage Backed Securities [Member] | Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  |  | 0 |  |
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 | 4 |  |  | 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 | 4 |  |  | 7 |  |
Collateralized Mortgage Backed Securities [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 4 |  |  | 7 |  |
Municipal bonds [Member] | Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |
Trust Assets Fair Value Disclosure | 0 |  |  | 0 |  |
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 | 113 |  |  | 100 |  |
Other assets | 151 |  |  | 157 |  |
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 | 119 |  |  | 20 |  |
Freeport-McMoRan Oil & Gas | Onshore California [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items] |  |  |  |  |  |
Other assets | 0 |  |  | 11 |  |
Discontinued Operation, Contingent Receivable |  |  |  |  |  | $ 150
Proceeds from Sale of Other Assets, contingent consideration |  | $ 50 |  |  |  |
Derivatives: |  |  |  |  |  |
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] |  |  |  |  |  |
Other Assets, Current | 18 |  |  |  |  |
Other assets | 101 |  |  | $ 104 |  |
Discontinued Operation, Contingent Receivable |  |  |  |  |  | $ 150
Forecast | Freeport-McMoRan Oil & Gas | Onshore California [Member] |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Discontinued Operation, Contingent Receivable, Per Year |  |  | $ 50 |  |  |
Crude Oil [Member] | Freeport-McMoRan Oil & Gas | Onshore California [Member] |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Contingent consideration, reference threshold (in us dollars per pound) | $ / bbl |  |  |  |  | 70 | 70
Fair Value, Recurring [Member] | Forward Contracts [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |
Derivatives: |  |  |  |  |  |
Derivative Asset | $ 0 |  |  |  |  |

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