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Fair Value Measurement (Fair Value Measurement Inputs) (Details) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2019 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 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 |  | $ 517 |  |  | $ 655 |  |
Other assets |  | 1,693 |  |  | 1,885 |  |
Proceeds from Sale of Other Assets, contingent consideration |  | 116 | $ 94 |  |  |  |
Derivative Liability, Fair Value, Gross Liability |  | 34 |  |  | 21 |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Marketable Securities |  | 0 |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 90 |  |  | 74 |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability |  | 30 |  |  | 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 |  | 29 |  |  | 27 |  |
Trust Assets Fair Value Disclosure |  | 63 |  |  | 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 |  | 5 |  |  | 4 |  |
Trust Assets Fair Value Disclosure |  | 9 |  |  | 3 |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 13 |  |  | 5 |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability |  | 2 |  |  | 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 |  | 136 |  |  | 134 |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 81 |  |  | 80 |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability |  | 32 |  |  | 21 |  |
Long-term debt, including current portion |  | 10,013 |  |  | 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 |  | 34 |  |  | 31 |  |
Trust Assets Fair Value Disclosure |  | 208 |  |  | 196 |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 94 |  |  | 85 |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability |  | 34 |  |  | 21 |  |
Long-term debt, including current portion |  | 10,013 |  |  | 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 |  | 115 |  |  | 122 |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Investments, Fair Value Disclosure |  | 34 |  |  | 31 |  |
Trust Assets Fair Value Disclosure |  | 208 |  |  | 196 |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 94 |  |  | 85 |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability |  | 34 |  |  | 21 |  |
Long-term debt, including current portion |  | 9,914 |  |  | 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 |  | 28 |  |  | 20 |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 77 |  |  | 68 |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability |  | 28 |  |  | 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 |  | 77 |  |  | 68 |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability |  | 28 |  |  | 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 |  | 77 |  |  | 68 |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability |  | 28 |  |  | 20 |  |
Embedded Derivative Financial Instruments [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 77 |  |  | 68 |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability |  | 28 |  |  | 20 |  |
Forward Contracts [Member] | Level 1 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 2 |  |  |  |  |
Forward Contracts [Member] | Level 2 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 2 |  |  |  |  |
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 |  | 6 |  |  | 1 |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 13 |  |  | 6 |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability |  | 2 |  |  | 1 |  |
Commodity Contract [Member] | Fair Value Measured at Net Asset Value Per Share [Member] |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 0 |  |  | 0 |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability |  | 0 |  |  | 0 |  |
Commodity Contract [Member] | Level 1 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  |  |  |  | 5 |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability |  | 2 |  |  | 0 |  |
Commodity Contract [Member] | Level 2 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  |  |  |  | 1 |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability |  | 4 |  |  | 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 |  | 6 |  |  | 1 |  |
Commodity Contract [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  |  |  |  | 6 |  |
Derivatives: [Abstract] |  |  |  |  |  |  |
Derivative Liability |  | 6 |  |  | 1 |  |
Future [Member] | Level 1 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 11 |  |  |  |  |
Future [Member] | Level 2 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 2 |  |  |  |  |
Future [Member] | Level 3 |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 0 |  |  |  |  |
Future [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 13 |  |  |  |  |
Future [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Derivative Asset |  | 13 |  |  |  |  |
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 |  | 29 |  |  | 27 |  |
Trust Assets Fair Value Disclosure |  | 63 |  |  | 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 |  | 29 |  |  | 27 |  |
Trust Assets Fair Value Disclosure |  | 63 |  |  | 59 |  |
U.S. core fixed income fund [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Marketable Securities |  | 29 |  |  | 27 |  |
Trust Assets Fair Value Disclosure |  | 63 |  |  | 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 |  | 5 |  |  | 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 |  | 5 |  |  | 4 |  |
Equity securities | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Marketable Securities |  | 5 |  |  | 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 |  | 32 |  |  | 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 |  | 32 |  |  | 36 |  |
Government bonds | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure |  | 32 |  |  | 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 |  | 45 |  |  | 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 |  | 45 |  |  | 33 |  |
Corporate bonds [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure |  | 45 |  |  | 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 |  | 40 |  |  | 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 |  | 40 |  |  | 43 |  |
Government mortgage-backed securities [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure |  | 40 |  |  | 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 |  | 14 |  |  | 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 |  | 14 |  |  | 14 |  |
Asset-backed securities [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure |  | 14 |  |  | 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 |  | 9 |  |  | 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 |  | 9 |  |  | 3 |  |
Money market funds [Member] | Carrying Amount, Fair Value Disclosure [Member] |  |  |  |  |  |  |
Investment securities (current and long-term): |  |  |  |  |  |  |
Trust Assets Fair Value Disclosure |  | 9 |  |  | 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 |  | 132 |  |  | 100 |  |
Other assets |  | 131 |  |  | 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 |  | 28 |  |  | 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 |  | 12 |  |  | 18 |  |
Other assets |  | 103 |  |  | $ 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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