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Price Risk Management Activities (Details) lb in Thousands, bu in Thousands, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) lb MBbls bu | Sep. 30, 2017 USD ($)
Price Risk Management Activities (Textual) |  |  |  |
Compliance program costs | $ | $ 27,701 | $ 20,329 | $ 79,317 | $ 59,366
Environmental Compliance Program Price Risk [Member] |  |  |  |
Price Risk Management Activities (Textual) |  |  |  |
Compliance program costs | $ | 94 | $ 230 | 431 | $ 631
Foreign Currency Contracts [Member] |  |  |  |
Price Risk Management Activities (Textual) |  |  |  |
Monetary notional amount of derivative liabilities | $ | $ 569 |  | $ 569 |
Foreign currency commitments maturity date |  |  | Oct. 31, 2018 |
Economic Hedges [Member] | Swap, 2018 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 |  |  | 17,645 |
Economic Hedges [Member] | Swap, 2018 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 |  |  | 17,262 |
Economic Hedges [Member] | Swap, 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 |  |  | 560 |
Economic Hedges [Member] | Swap, 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 |  |  | 180 |
Economic Hedges [Member] | Swap, 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] | Swap, 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] | Future, 2018 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 |  |  | 83,979 |
Economic Hedges [Member] | Future, 2018 Maturity [Member] | Long (Purchases) [Member] | Corn (in thousands of bushels) [Member] |  |  |  |
Volume of Outstanding Contracts |  |  |  |
Nonmonetary notional amount of price risk derivatives, volume | bu |  |  | 18,540 |
Economic Hedges [Member] | Future, 2018 Maturity [Member] | Long (Purchases) [Member] | Soybean Oil (in thousands of pounds) [Member] |  |  |  |
Volume of Outstanding Contracts |  |  |  |
Nonmonetary notional amount of price risk derivatives, pounds | lb |  |  | 99,899 |
Economic Hedges [Member] | Future, 2018 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 |  |  | 100,549 |
Economic Hedges [Member] | Future, 2018 Maturity [Member] | Short (Sales) [Member] | Corn (in thousands of bushels) [Member] |  |  |  |
Volume of Outstanding Contracts |  |  |  |
Nonmonetary notional amount of price risk derivatives, volume | bu |  |  | 38,785 |
Economic Hedges [Member] | Future, 2018 Maturity [Member] | Short (Sales) [Member] | Soybean Oil (in thousands of pounds) [Member] |  |  |  |
Volume of Outstanding Contracts |  |  |  |
Nonmonetary notional amount of price risk derivatives, pounds | lb |  |  | 226,317 |
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 |  |  | 3,353 |
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 |  |  | 250 |
Economic Hedges [Member] | Future, 2019 Maturity [Member] | Long (Purchases) [Member] | Soybean Oil (in thousands of pounds) [Member] |  |  |  |
Volume of Outstanding Contracts |  |  |  |
Nonmonetary notional amount of price risk derivatives, pounds | lb |  |  | 0 |
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 |  |  | 3,399 |
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 |  |  | 10,230 |
Economic Hedges [Member] | Future, 2019 Maturity [Member] | Short (Sales) [Member] | Soybean Oil (in thousands of pounds) [Member] |  |  |  |
Volume of Outstanding Contracts |  |  |  |
Nonmonetary notional amount of price risk derivatives, pounds | lb |  |  | 42,179 |
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 |  |  | 0 |
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 |  |  | 0 |
Economic Hedges [Member] | Future, 2020 Maturity [Member] | Long (Purchases) [Member] | Soybean Oil (in thousands of pounds) [Member] |  |  |  |
Volume of Outstanding Contracts |  |  |  |
Nonmonetary notional amount of price risk derivatives, pounds | lb |  |  | 0 |
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 |  |  | 0 |
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 |  |  | 45 |
Economic Hedges [Member] | Future, 2020 Maturity [Member] | Short (Sales) [Member] | Soybean Oil (in thousands of pounds) [Member] |  |  |  |
Volume of Outstanding Contracts |  |  |  |
Nonmonetary notional amount of price risk derivatives, pounds | lb |  |  | 0 |
Economic Hedges [Member] | Physical Contracts, 2018 Maturity [Member] | Long (Purchases) [Member] | Corn (in thousands of bushels) [Member] |  |  |  |
Volume of Outstanding Contracts |  |  |  |
Nonmonetary notional amount of price risk derivatives, volume | bu |  |  | 22,612 |
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 |  |  | 10,004 |
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 |  |  | 43 |
Trading Derivatives [Member] | Future, 2018 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 |  |  | 62,616 |
Trading Derivatives [Member] | Future, 2018 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 |  |  | 62,161 |
Trading Derivatives [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 |  |  | 13,896 |
Trading Derivatives [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 |  |  | 14,321 |
Trading Derivatives [Member] | Options Held, 2018 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 |  |  | 29,227 |
Trading Derivatives [Member] | Options Held, 2018 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 |  |  | 29,250 |
Trading Derivatives [Member] | Options Held, 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 |  |  | 500 |
Trading Derivatives [Member] | Options Held, 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 |  |  | 500 |

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