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Price Risk Management Activities (Details) bu in Thousands, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 USD ($) MBbls bu | Mar. 31, 2018 USD ($)
Price Risk Management Activities (Textual) |  |
Compliance program costs | $ | $ 21,978 | $ 23,756
Environmental Compliance Program Price Risk [Member] |  |
Price Risk Management Activities (Textual) |  |
Compliance program costs | $ | $ 91 | $ 206
Economic Hedges [Member] | Future, 2019 Maturity [Member] | Long (Purchases) [Member] | Crude Oil and Refined Petroleum Products (in thousands of barrels) [Member] |  |
Volume of Outstanding Contracts |  |
Nonmonetary notional amount of price risk derivatives, volume | 123,087 |
Economic Hedges [Member] | Future, 2019 Maturity [Member] | Long (Purchases) [Member] | Corn (in thousands of bushels) [Member] |  |
Volume of Outstanding Contracts |  |
Nonmonetary notional amount of price risk derivatives, volume | bu | 19,005 |
Economic Hedges [Member] | Future, 2019 Maturity [Member] | Short (Sales) [Member] | Crude Oil and Refined Petroleum Products (in thousands of barrels) [Member] |  |
Volume of Outstanding Contracts |  |
Nonmonetary notional amount of price risk derivatives, volume | 130,923 |
Economic Hedges [Member] | Future, 2019 Maturity [Member] | Short (Sales) [Member] | Corn (in thousands of bushels) [Member] |  |
Volume of Outstanding Contracts |  |
Nonmonetary notional amount of price risk derivatives, volume | bu | 43,770 |
Economic Hedges [Member] | Future, 2020 Maturity [Member] | Long (Purchases) [Member] | Crude Oil and Refined Petroleum Products (in thousands of barrels) [Member] |  |
Volume of Outstanding Contracts |  |
Nonmonetary notional amount of price risk derivatives, volume | 3,856 |
Economic Hedges [Member] | Future, 2020 Maturity [Member] | Long (Purchases) [Member] | Corn (in thousands of bushels) [Member] |  |
Volume of Outstanding Contracts |  |
Nonmonetary notional amount of price risk derivatives, volume | bu | 1,275 |
Economic Hedges [Member] | Future, 2020 Maturity [Member] | Short (Sales) [Member] | Crude Oil and Refined Petroleum Products (in thousands of barrels) [Member] |  |
Volume of Outstanding Contracts |  |
Nonmonetary notional amount of price risk derivatives, volume | 5,456 |
Economic Hedges [Member] | Future, 2020 Maturity [Member] | Short (Sales) [Member] | Corn (in thousands of bushels) [Member] |  |
Volume of Outstanding Contracts |  |
Nonmonetary notional amount of price risk derivatives, volume | bu | 3,515 |
Economic Hedges [Member] | Options, 2019 Maturity [Member] | Long (Purchases) [Member] | Crude Oil and Refined Petroleum Products (in thousands of barrels) [Member] |  |
Volume of Outstanding Contracts |  |
Nonmonetary notional amount of price risk derivatives, volume | 21,000 |
Economic Hedges [Member] | Options, 2019 Maturity [Member] | Short (Sales) [Member] | Crude Oil and Refined Petroleum Products (in thousands of barrels) [Member] |  |
Volume of Outstanding Contracts |  |
Nonmonetary notional amount of price risk derivatives, volume | 21,000 |
Economic Hedges [Member] | Options, 2020 Maturity [Member] | Long (Purchases) [Member] | Crude Oil and Refined Petroleum Products (in thousands of barrels) [Member] |  |
Volume of Outstanding Contracts |  |
Nonmonetary notional amount of price risk derivatives, volume | 0 |
Economic Hedges [Member] | Options, 2020 Maturity [Member] | Short (Sales) [Member] | Crude Oil and Refined Petroleum Products (in thousands of barrels) [Member] |  |
Volume of Outstanding Contracts |  |
Nonmonetary notional amount of price risk derivatives, volume | 0 |
Economic Hedges [Member] | Physical Contracts, 2019 Maturity [Member] | Long (Purchases) [Member] | Corn (in thousands of bushels) [Member] |  |
Volume of Outstanding Contracts |  |
Nonmonetary notional amount of price risk derivatives, volume | bu | 23,726 |
Economic Hedges [Member] | Physical Contracts, 2020 Maturity [Member] | Long (Purchases) [Member] | Corn (in thousands of bushels) [Member] |  |
Volume of Outstanding Contracts |  |
Nonmonetary notional amount of price risk derivatives, volume | bu | 2,238 |
Economic Hedges [Member] | Foreign Exchange Contract, US Dollars [Member] |  |
Price Risk Management Activities (Textual) |  |
Monetary notional amount of derivative liabilities | $ | $ 418 |
Economic Hedges [Member] | Foreign Exchange Contract, US Dollar Equivalent Canadian Dollars [Member] |  |
Price Risk Management Activities (Textual) |  |
Monetary notional amount of derivative liabilities | $ | 1,700 |
Economic Hedges [Member] | Foreign Exchange Contract, US Dollar Equivalent Pounds Sterling [Member] |  |
Price Risk Management Activities (Textual) |  |
Monetary notional amount of derivative liabilities | $ | $ 300 |

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