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Merger and Acquisitions (Details) $ / shares in Units, gal in Millions |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 10, 2019 USD ($) $ / shares | Nov. 15, 2018 USD ($) plant gal | May 14, 2018 USD ($) MBbls | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Acquisitions and Merger (Textual) |  |  |  |  |  |
Merger Transaction, aggregate merger consideration funded with available cash on hand |  |  |  | $ 0 | $ 950,000,000 | $ 0
Amount paid from available cash on hand |  |  |  | 0 | 0 | 468,000,000
Goodwill |  |  |  | 260,000,000 | 260,000,000 |
Ethanol Plants [Member] |  |  |  |  |  |
Acquisitions and Merger (Textual) |  |  |  |  |  |
Acquisition agreement, number of ethanol plants | plant |  | 3 |  |  |  |
Acquisition agreement, combined ethanol production capacity per year | gal |  | 280 |  |  |  |
Acquisition agreement, total cash consideration |  | $ 320,000,000 |  | $ 0 | $ 3,000,000 | $ 320,000,000
Working capital |  | $ 20,000,000 |  |  |  |
VLP [Member] |  |  |  |  |  |
Acquisitions and Merger (Textual) |  |  |  |  |  |
Merger Transaction, price per common unit (in usd per unit) | $ / shares | $ 42.25 |  |  |  |  |
Merger Transaction, aggregate merger consideration funded with available cash on hand | $ 950,000,000 |  |  |  |  |
Pure Biofuels del Peru S.A.C (Now Known as Valero Peru S.A.C.) [Member] |  |  |  |  |  |
Acquisitions and Merger (Textual) |  |  |  |  |  |
Working capital |  |  | $ 132,000,000 |  |  |
Percent equity interests acquired |  |  | 100.00% |  |  |
Amount paid from available cash on hand |  |  | $ 468,000,000 |  |  |
Identifiable intangible assets |  |  | 200,000,000 |  |  |
Goodwill |  |  | $ 260,000,000 |  |  |
Amortization period of identifiable intangible assets |  |  | 10 years |  |  |
Total amount of goodwill deductible for tax purposes |  |  | $ 0 |  |  |
Pure Biofuels del Peru S.A.C (Now Known as Valero Peru S.A.C.) [Member] | Port of Callao Terminal [Member] |  |  |  |  |  |
Acquisitions and Merger (Textual) |  |  |  |  |  |
Approximate storage capacity of terminal (in thousands of barrels) | MBbls |  |  | 1,000 |  |  |
Pure Biofuels del Peru S.A.C (Now Known as Valero Peru S.A.C.) [Member] | Paita Terminal [Member] |  |  |  |  |  |
Acquisitions and Merger (Textual) |  |  |  |  |  |
Approximate storage capacity of terminal (in thousands of barrels) | MBbls |  |  | 180 |  |  |

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