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Debt, Credit Facilities and Bank Debt (Details) CAD in Millions |  |  |  |  | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 14, 2013 USD ($) | Oct. 24, 2013 USD ($) | May. 01, 2013 USD ($) | Apr. 16, 2013 USD ($) | Dec. 31, 2015 USD ($) quarter | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2015 CAD renewal | Dec. 31, 2015 USD ($) renewal | Nov. 30, 2015 USD ($) | Oct. 31, 2015 USD ($) | Jul. 31, 2015 USD ($) | Jun. 30, 2015 USD ($) | May. 31, 2015 USD ($) | Mar. 20, 2013 USD ($)
Bank Debt (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from short-term debt in anticipation of separation |  |  |  |  | $ 0 | $ 0 | $ 550,000,000 |  |  |  |  |  |  |  |
Senior unsecured bonds of CST Brands, Inc. issued to us |  |  |  |  |  | 256,000,000 |  |  | $ 247,000,000 |  |  |  |  |  |
Proceeds from short-term debt related to disposition of retained interest |  |  |  |  | 0 | 0 | 525,000,000 |  |  |  |  |  |  |  |
Fees paid related to disposition of retained interest |  |  |  |  | 55,000,000 | 28,000,000 | (19,000,000) |  |  |  |  |  |  |  |
Gain on disposition of retained interest in CST Brands, Inc. |  |  |  |  | $ 0 | 0 | 325,000,000 |  |  |  |  |  |  |  |
Spinoff [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank Debt (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior unsecured bonds of CST Brands, Inc. issued to us |  |  | $ 550,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Fees paid related to disposition of retained interest | $ 19,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on disposition of retained interest in CST Brands, Inc. | 325,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Spinoff [Member] | Notes Payable to Banks [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank Debt (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from short-term debt in anticipation of separation |  |  |  | $ 550,000,000 |  |  |  |  |  |  |  |  |  |  |
CST Brands, Inc. securities exchanged in settlement of short-term borrowings | 467,000,000 |  | $ 550,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from short-term debt related to disposition of retained interest |  | $ 525,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of short-term debt related to disposition of retained interest | $ 58,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit Facilities [Member] | Spinoff [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 800,000,000
U S 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 |  |  |  |  |  |  |  |  | $ 2,943,000,000 |  |  |  |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, accordion feature, higher borrowing capacity option |  |  |  |  |  |  |  |  |  | $ 4,500,000,000 |  |  |  |  |
Line of credit facility, number of renewal options | renewal |  |  |  |  |  |  |  | 2 | 2 |  |  |  |  |  |
Line of credit facility, duration of renewal option (in years) |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |
U S Revolver Letter of Credit [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  | 2,000,000,000 |  |  |  |  |
Amount outstanding |  |  |  |  |  |  |  |  | $ 57,000,000 |  |  |  |  |  |
VLP Revolver [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  | 750,000,000 |  | $ 300,000,000 |  |  |  |
Line of credit facility, expiration date |  |  |  |  | Nov. 30, 2020 |  |  |  |  |  |  |  |  |  |
Amount outstanding |  |  |  |  |  |  |  |  | 175,000,000 |  |  |  |  |  |
Line of credit facility, remaining borrowing capacity |  |  |  |  |  |  |  |  | $ 575,000,000 |  |  |  |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, accordion feature, higher borrowing capacity option |  |  |  |  |  |  |  |  |  | 1,000,000,000 |  |  |  |  |
Line of credit facility, number of renewal options | renewal |  |  |  |  |  |  |  | 2 | 2 |  |  |  |  |  |
Line of credit facility, duration of renewal option (in years) |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |
Line of credit facility, interest rate during period |  |  |  |  | 1.50% |  |  |  |  |  |  |  |  |  |
Number of prior quarterly reporting periods used for debt to EBITDA ratio | quarter |  |  |  |  | 4 |  |  |  |  |  |  |  |  |  |
Borrowings from long-term lines of credit |  |  |  |  | $ 200,000,000 | 0 | 0 |  |  |  |  |  |  |  |
Repayments of long-term lines of credit |  |  |  |  | $ 25,000,000 | 0 | $ 0 |  |  |  |  |  |  |  |
VLP Revolver [Member] | Credit Facilities [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt to EBITDA ratio as per terms of revolver |  |  |  |  |  |  |  | 5.0 | 5.0 |  |  |  |  |  |
VLP Revolver Letter of Credit [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  | 100,000,000 |  |  |  |  |
Amount outstanding |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |
Canadian Revolver [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | CAD |  |  |  |  |  |  |  | CAD 50 |  |  |  |  |  |  |
Line of credit facility, expiration date |  |  |  |  | Nov. 30, 2016 |  |  |  |  |  |  |  |  |  |
Amount outstanding | CAD |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |
Line of credit facility, remaining borrowing capacity | CAD |  |  |  |  |  |  |  | 40 |  |  |  |  |  |  |
Canadian Revolver Letter of Credit [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount outstanding | CAD |  |  |  |  |  |  |  | CAD 10 |  |  |  |  |  |  |
A/R Sales Facility [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  | 1,400,000,000 |  |  |  | $ 1,500,000,000 |  |
Line of credit facility, expiration date |  |  |  |  | Jul. 31, 2016 |  |  |  |  |  |  |  |  |  |
Amount outstanding |  |  |  |  |  |  |  |  | 100,000,000 |  |  |  |  |  |
Line of credit facility, remaining borrowing capacity |  |  |  |  |  |  |  |  | 992,000,000 |  |  |  |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Designated pool of accounts receivable |  |  |  |  |  | 1,700,000,000 |  |  | 1,300,000,000 |  |  |  |  |  |
Bank Debt (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Other Debt |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |
Committed Letter of Credit Facility [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  | 275,000,000 |  |  |  |  |  |
Amount outstanding |  |  |  |  |  |  |  |  | 9,000,000 |  |  |  |  |  |
Line of credit facility, remaining borrowing capacity |  |  |  |  |  |  |  |  | 266,000,000 |  |  |  |  |  |
Committed Letter of Credit - Expired [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 300,000,000 |
Committed Letter of Credit Facility Expires June 2016 [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  | $ 125,000,000 | $ 250,000,000 |  |
Line of credit facility, expiration date |  |  |  |  | Jun. 30, 2016 |  |  |  |  |  |  |  |  |  |
Committed Letter of Credit Facility Expires November 2016 [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  | $ 150,000,000 |  |  |  |  |
Line of credit facility, expiration date |  |  |  |  | Nov. 30, 2016 |  |  |  |  |  |  |  |  |  |
Uncommitted Letter of Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  | 775,000,000 |  |  |  |  |  |
Amount outstanding |  |  |  |  |  |  |  |  | 87,000,000 |  |  |  |  |  |
Line of credit facility, remaining borrowing capacity |  |  |  |  |  |  |  |  | 688,000,000 |  |  |  |  |  |
Bank Credit Facilities [Member] | Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit Facilities (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt at stated values |  |  |  |  |  | $ 0 |  |  | $ 175,000,000 |  |  |  |  |  |

X
- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + 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 SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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- Definition The profit or loss on sales of previously unissued stock by equity investees made to investors outside the consolidated group that is not reported as operating income. Represents the difference in the parent company's carrying amount of the equity interest in the subsidiary or equity investee immediately before and after the transaction. + References No definition available. + 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 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 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 SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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- References No definition available. + Details
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- Definition Date the credit facility terminates, in CCYY-MM-DD format. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The effective interest rate during the reporting period. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition An amount representing an agreement for an unconditional promise by the maker to pay the Company (holder) a definite sum of money within one year from the balance sheet date (or the normal operating cycle, whichever is longer), net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4531-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 + Details
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- Definition The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3098-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3095-108585 + Details
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- Definition The cash inflow from bank borrowing during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash inflow from other borrowing not otherwise defined in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash inflow from a borrowing not otherwise defined in the taxonomy having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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