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Condensed Consolidating Financial Statements (Details) - Valero Energy Partners LP [Member] - Senior Notes [Member] | Sep. 30, 2019 | Sep. 30, 2018
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VLP Senior Notes Due December 15, 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Stated rate on debt instrument (percent) | 4.375% |
VLP Senior Notes Due March 15, 2028 [Member] |  |
Debt Instrument [Line Items] |  |
Stated rate on debt instrument (percent) | 4.50% | 4.50%

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