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Price Risk Management Activities (Details) bu in Thousands, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) bu MBbls | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Price Risk Management Activities (Textual) |  |  |
Compliance program costs | $ | $ 58,933 | $ 96,476 | $ 104,732
Environmental Compliance Program Price Risk [Member] |  |  |
Price Risk Management Activities (Textual) |  |  |
Compliance program costs | $ | $ 648 | $ 318 | $ 536
Derivatives Designated as Economic Hedges [Member] | Futures, 2021 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 | 53,205 |  |
Derivatives Designated as Economic Hedges [Member] | Futures, 2021 Maturity [Member] | Long (Purchases) [Member] | Corn (in thousands of bushels) [Member] |  |  |
Volume of Outstanding Contracts |  |  |
Nonmonetary notional amount of price risk derivatives, volume | bu | 49,840 |  |
Derivatives Designated as Economic Hedges [Member] | Futures, 2021 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 | 50,518 |  |
Derivatives Designated as Economic Hedges [Member] | Futures, 2021 Maturity [Member] | Short (Sales) [Member] | Corn (in thousands of bushels) [Member] |  |  |
Volume of Outstanding Contracts |  |  |
Nonmonetary notional amount of price risk derivatives, volume | bu | 78,135 |  |
Derivatives Designated as Economic Hedges [Member] | Futures, 2022 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 | 1 |  |
Derivatives Designated as Economic Hedges [Member] | Futures, 2022 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 |  |
Derivatives Designated as Economic Hedges [Member] | Futures, 2022 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 |  |
Derivatives Designated as Economic Hedges [Member] | Futures, 2022 Maturity [Member] | Short (Sales) [Member] | Corn (in thousands of bushels) [Member] |  |  |
Volume of Outstanding Contracts |  |  |
Nonmonetary notional amount of price risk derivatives, volume | bu | 155 |  |
Derivatives Designated as Economic Hedges [Member] | Physical Contracts, 2021 Maturity [Member] | Long (Purchases) [Member] | Corn (in thousands of bushels) [Member] |  |  |
Volume of Outstanding Contracts |  |  |
Nonmonetary notional amount of price risk derivatives, volume | bu | 27,144 |  |
Derivatives Designated as Economic Hedges [Member] | Physical Contracts, 2022 Maturity [Member] | Long (Purchases) [Member] | Corn (in thousands of bushels) [Member] |  |  |
Volume of Outstanding Contracts |  |  |
Nonmonetary notional amount of price risk derivatives, volume | bu | 145 |  |
Derivatives Designated as Economic Hedges [Member] | Foreign Exchange Contract, US Dollars [Member] |  |  |
Price Risk Management Activities (Textual) |  |  |
Monetary notional amount of derivative liabilities | $ | $ 325 |  |
Derivatives Designated as Economic Hedges [Member] | Foreign Exchange Contract, US Dollar Equivalent Canadian Dollars [Member] |  |  |
Price Risk Management Activities (Textual) |  |  |
Monetary notional amount of derivative liabilities | $ | 1,600 |  |
Derivatives Designated as Economic Hedges [Member] | Foreign Exchange Contract, Maturity on or Before February 16, 2021 [Member] |  |  |
Price Risk Management Activities (Textual) |  |  |
Monetary notional amount of derivative liabilities | $ | 1,100 |  |
Derivatives Designated as Economic Hedges [Member] | Foreign Exchange Contract, Maturity by April 15, 2021 [Member] |  |  |
Price Risk Management Activities (Textual) |  |  |
Monetary notional amount of derivative liabilities | $ | $ 800 |  |
Cash Flow Hedges [Member] | Derivatives Designated as Hedges [Member] | Futures, 2021 Maturity [Member] | Long (Purchases) [Member] | Refined Petroleum Products (in thousands of barrels) [Member] |  |  |
Volume of Outstanding Contracts |  |  |
Nonmonetary notional amount of price risk derivatives, volume | 334 |  |
Cash Flow Hedges [Member] | Derivatives Designated as Hedges [Member] | Futures, 2021 Maturity [Member] | Short (Sales) [Member] | Refined Petroleum Products (in thousands of barrels) [Member] |  |  |
Volume of Outstanding Contracts |  |  |
Nonmonetary notional amount of price risk derivatives, volume | 1,364 |  |
Cash Flow Hedges [Member] | Derivatives Designated as Hedges [Member] | Futures, 2022 Maturity [Member] | Long (Purchases) [Member] | Refined Petroleum Products (in thousands of barrels) [Member] |  |  |
Volume of Outstanding Contracts |  |  |
Nonmonetary notional amount of price risk derivatives, volume | 0 |  |
Cash Flow Hedges [Member] | Derivatives Designated as Hedges [Member] | Futures, 2022 Maturity [Member] | Short (Sales) [Member] | Refined Petroleum Products (in thousands of barrels) [Member] |  |  |
Volume of Outstanding Contracts |  |  |
Nonmonetary notional amount of price risk derivatives, volume | 0 |  |

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