XML 86 R80.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Employee Benefit Plans, Fair Value of Assets Qualified Plans (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 method | Dec. 31, 2011
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | $ 1,729 |  | $ 1,487 |
Employee Benefit Plans (Textual) |  |  |  |
Methods of expected returns on plan assets by class | 3 |  |  |
Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 1,035 |  | 892 |
Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 694 |  | 595 |
Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
Common Stock [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets |  |  | 5 |
Common Stock [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets |  |  | 5 |
Common Stock [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets |  |  | 0 |
Common Stock [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets |  |  | 0 |
Other US Companies [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 441 | [1] | 375 | [1]
Other US Companies [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 441 | [1] | 375 | [1]
Other US Companies [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 | [1] | 0 | [1]
Other US Companies [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 | [1] | 0 | [1]
International Companies [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 135 |  | 120 |
International Companies [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 135 |  | 120 |
International Companies [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
International Companies [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
Preferred Stock [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 3 |  | 2 |
Preferred Stock [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 2 |  | 2 |
Preferred Stock [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 1 |  | 0 |
Preferred Stock [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
International Growth [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 127 |  | 102 |
International Growth [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 127 |  | 102 |
International Growth [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
International Growth [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
Index Funds [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 117 | [2] | 63 | [2]
Index Funds [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 117 | [2] | 63 | [2]
Index Funds [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 | [2] | 0 | [2]
Index Funds [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 | [2] | 0 | [2]
Corporate Debt Instruments [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 290 |  | 246 |
Corporate Debt Instruments [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
Corporate Debt Instruments [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 290 |  | 246 |
Corporate Debt Instruments [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
US Treasury Securities [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 107 |  | 67 |
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 107 |  | 67 |
US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
US Treasury Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
Other Government Securities [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 68 |  | 84 |
Other Government Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 3 |  | 0 |
Other Government Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 65 |  | 84 |
Other Government Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
Common Collective Trusts [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 294 |  | 247 |
Common Collective Trusts [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
Common Collective Trusts [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 294 |  | 247 |
Common Collective Trusts [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
Insurance Contracts [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 17 |  | 17 |
Insurance Contracts [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
Insurance Contracts [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 17 |  | 17 |
Insurance Contracts [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
Interest and Dividends Receivable [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 5 |  | 5 |
Interest and Dividends Receivable [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 5 |  | 5 |
Interest and Dividends Receivable [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
Interest and Dividends Receivable [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 0 |  | 0 |
Cash and Cash Equivalents [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 125 |  | 154 |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 98 |  | 153 |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | 27 |  | 1 |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Fair value of qualified pension plan assets | $ 0 |  | $ 0 |
Equity Securities [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Defined benefit plan, actual plan asset allocations | 60.00% |  |  |
Employee Benefit Plans (Textual) |  |  |  |
Percentage of equity securities in target allocations for plan assets | 70.00% |  |  |
Debt Securities [Member] |  |  |  |
Fair Values of Qualified Pension Plan Assets |  |  |  |
Defined benefit plan, actual plan asset allocations | 40.00% |  |  |
Employee Benefit Plans (Textual) |  |  |  |
Percentage of equity securities in target allocations for plan assets | 30.00% |  |  |
[1] | Equity securities are held in a wide range of industrial sectors, including consumer goods, information technology, healthcare, industrials, and financial services.
[2] | This class includes primarily investments in approximately 60 percent equities and 40 percent bonds.

X
- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=6867990&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Target allocation of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2446-114920 + Details
Name: | us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | vlo_EmployeeBenefitPlansTextualsAbstract
Namespace Prefix: | vlo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of methods used to derive the LT expected returns for each pension plan asset class. + References No definition available. + Details
Name: | vlo_NumberOfMethodsExpectedReturnsOnBenefitPlanAssetsByClass
Namespace Prefix: | vlo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration