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Debt and Capital Lease Obligations, Debt and Credit Facilities (Details) |  | 1 Months Ended | 6 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Nov. 01, 2017 USD ($) | Oct. 31, 2017 CAD | Oct. 31, 2016 USD ($) | Jun. 29, 2017 USD ($) | Sep. 30, 2017 CAD | Sep. 30, 2016 USD ($) | Sep. 30, 2017 USD ($) | Dec. 31, 2016 | Sep. 30, 2016 CAD | Sep. 30, 2016 USD ($)
Valero Revolver [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  | $ 3,000,000,000 |  |  |
Line of credit facility, expiration date |  |  |  |  | Nov. 30, 2020 |  |  |  |  |
Amount outstanding |  |  |  |  |  |  | 0 |  |  |
Line of credit facility, remaining borrowing capacity |  |  |  |  |  |  | 2,633,000,000 |  |  |
Valero Revolver Letter of Credit [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |
Amount outstanding |  |  |  |  |  |  | 367,000,000 |  |  |
VLP Revolver [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  | 750,000,000 |  |  |
Line of credit facility, expiration date |  |  |  |  | Nov. 30, 2020 |  |  |  |  |
Amount outstanding |  |  |  |  |  |  | 30,000,000 |  |  |
Line of credit facility, remaining borrowing capacity |  |  |  |  |  |  | $ 720,000,000 |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |
Interest rate at period end (percent) |  |  |  |  | 2.75% |  | 2.75% | 2.3125% |  |
VLP Revolver Letter of Credit [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |
Amount outstanding |  |  |  |  |  |  | $ 0 |  |  |
Canadian Revolver [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | CAD |  |  |  |  | CAD 25,000,000 |  |  |  |  |
Line of credit facility, expiration date |  |  |  |  | Nov. 30, 2017 |  |  |  |  |
Amount outstanding | CAD |  |  |  |  | CAD 0 |  |  |  |  |
Line of credit facility, remaining borrowing capacity | CAD |  |  |  |  | 15,000,000 |  |  |  |  |
Canadian Revolver [Member] | Credit Facilities [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | CAD |  | CAD 75,000,000 |  |  |  |  |  |  |  |
Line of credit facility, expiration date |  | Nov. 30, 2018 |  |  |  |  |  |  |  |
Canadian Revolver Letter of Credit [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |
Amount outstanding | CAD |  |  |  |  | CAD 10,000,000 |  |  |  |  |
A/R Sales Facility [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  | 1,300,000,000 |  |  |
Line of credit facility, expiration date |  |  |  |  | Jul. 31, 2018 |  |  |  |  |
Amount outstanding |  |  |  |  |  |  | 100,000,000 |  |  |
Line of credit facility, remaining borrowing capacity |  |  |  |  |  |  | $ 1,200,000,000 |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |
Interest rate at period end (percent) |  |  |  |  | 1.9124% |  | 1.9124% | 1.3422% |  |
Committed Letter of Credit Facility Expires November 2017 [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  | $ 100,000,000 |  |  |
Line of credit facility, expiration date |  |  |  |  | Nov. 30, 2017 |  |  |  |  |
Amount outstanding |  |  |  |  |  |  | 0 |  |  |
Line of credit facility, remaining borrowing capacity |  |  |  |  |  |  | 100,000,000 |  |  |
Committed Letter of Credit Facility Expires June 2017 [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  | $ 125,000,000 |  |  |  |  |  |
Line of credit facility, expiration date |  |  |  | Jun. 30, 2017 |  |  |  |  |  |
Uncommitted Letter of Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |
Amount outstanding |  |  |  |  |  |  | $ 212,000,000 |  |  |
Senior Notes Due in 2026 [Member] | Senior Notes [Member] |  |  |  |  |  |  |  |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |
Face amount of long-term debt issuance |  |  |  |  |  |  |  |  |  | $ 1,250,000,000
Stated rate on debt instrument (percent) |  |  |  |  |  |  |  |  | 3.40% | 3.40%
Maturity date of long-term debt |  |  |  |  |  | Sep. 15, 2026 |  |  |  |
Proceeds from issuance of senior long-term debt |  |  |  |  |  | $ 1,246,000,000 |  |  |  |
Debt issuance costs |  |  |  |  |  | 10,000,000 |  |  |  |
Senior Notes Due in June 2017 [Member] | Senior Notes [Member] |  |  |  |  |  |  |  |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |
Stated rate on debt instrument (percent) |  |  | 6.125% |  |  |  |  |  |  |
Aggregate principal amount of debt redeemed |  |  | $ 750,000,000 |  |  |  |  |  |  |
Senior Notes Due in October 2017 [Member] | Senior Notes [Member] |  |  |  |  |  |  |  |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |
Stated rate on debt instrument (percent) |  |  | 7.20% |  |  |  |  |  |  |
Aggregate principal amount of debt redeemed |  |  | $ 200,000,000 |  |  |  |  |  |  |
Senior Secured Credit Agreement Due in 2023 [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |
Face amount of long-term debt issuance | CAD |  |  |  |  |  |  |  |  | CAD 72,000,000 |
McKee Terminal Services Business [Member] | VLP Revolver [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |
Proceeds from long-term lines of credit |  |  |  |  |  | 139,000,000 |  |  |  |
Meraux and Three Rivers Terminal Services Business [Member] | VLP Revolver [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |
Proceeds from long-term lines of credit |  |  |  |  |  | $ 210,000,000 |  |  |  |
Parkway Pipeline LLC [Member] | VLP Revolver [Member] | Credit Facilities [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |
Proceeds from long-term lines of credit | $ 118,000,000 |  |  |  |  |  |  |  |  |
Interest rate at period end (percent) | 2.75% |  |  |  |  |  |  |  |  |
Valero Partners Port Arthur, LLC [Member] | VLP Revolver [Member] | Credit Facilities [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |
Proceeds from long-term lines of credit | $ 262,000,000 |  |  |  |  |  |  |  |  |
Interest rate at period end (percent) | 2.875% |  |  |  |  |  |  |  |  |

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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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 for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity. + 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 (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + 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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