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Debt and Capital Lease Obligations, Narrative (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Credit Facilities [Member] | A/R Sales Facility [Member] |  |
Credit Facilities (Textual) |  |
Line of credit facility, maximum borrowing capacity | $ 1,300,000,000 |
Interest rate at period end (percent) | 2.3616% | 2.0387%
Valero Energy Partners LP [Member] | Senior Notes [Member] | VLP Senior Notes Due March 2028 [Member] |  |
Credit Facilities (Textual) |  |
Face amount of long-term debt issuance | $ 500,000,000 |
Stated rate on debt instrument (percent) | 4.50% |
Maturity date of long-term debt | Mar. 15, 2028 |
Proceeds from issuance of senior long-term debt | $ 498,000,000 |
Debt issuance costs | 5,000,000 |
Valero Energy Partners LP [Member] | Credit Facilities [Member] | VLP Revolver [Member] |  |
Credit Facilities (Textual) |  |
Repayments of outstanding amounts under the VLP revolver | 410,000,000 |
Valero Energy Partners LP [Member] | Credit Facilities [Member] | VLP Revolver [Member] |  |
Credit Facilities (Textual) |  |
Line of credit facility, maximum borrowing capacity | 750,000,000 |
Valero Energy Partners LP [Member] | Subordinated Debt [Member] | VLP Subordinated Notes [Member] |  |
Credit Facilities (Textual) |  |
Repayments of notes payable-related party | $ 85,000,000 |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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