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Effect of cash collateral netting Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset Award Timing Predetermined Award Timing Predetermined [Flag] Entity file number Entity File Number Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Gasoline and Blendstocks [Member] Gasoline and Blendstocks [Member] Gasoline and Blendstocks revenue [Member] Uncommitted Letter of Credit Facility [Member] Other Letter of Credit [Member] Other letter of credit facilities under uncommitted short-term bank credit facilities. DGD Loan Agreement [Member] DGD Loan Agreement [Member] DGD Loan Agreement Tabular List, Table Tabular List [Table Text Block] Income tax expense (benefit) related to items of other comprehensive income (loss) Other Comprehensive Income (Loss), Tax Earnings (loss) per common share: Earnings Per Share, Basic [Abstract] Gain Contingencies [Line Items] Gain Contingencies [Line Items] Accounts payable Increase (Decrease) in Accounts Payable Schedule of Carrying Amount and Estimated Fair Value of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Type of Restructuring [Domain] Type of Restructuring [Domain] Amount of non-LIFO inventory Weighted Average Cost Inventory Amount Position [Axis] Position [Axis] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Earnings (loss) per common share (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Schedule of Credit Facilities Schedule of Line of Credit Facilities [Table Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Liabilities Liabilities, Fair Value Disclosure [Abstract] Stock Purchase Program, Approved September 2024 [Member] Stock Repurchase Program Approved September 2024 [Member] Stock Repurchase Program Approved September 2024 Asset retirement obligation, liabilities settled Asset Retirement Obligation, Liabilities Settled Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Other comprehensive income (loss) Other comprehensive (loss) income Other Comprehensive Income (Loss), Net of Tax Segment Activity, Including Total Assets by Reportable Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Outstanding borrowings, short-term Short-Term Debt Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Effect of cash collateral netting Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset Adjustment to Compensation, Amount Adjustment to Compensation Amount Pension Plans [Member] Pension Plan [Member] Impaired Long-Lived Asset, Held and Used [Table] Impaired Long-Lived Asset, Held and Used [Table] Employee Stock Option Share-Based Payment Arrangement, Option [Member] Crude Oil and Refined Petroleum Products (in thousands of barrels) [Member] Crude Oil And Refined Petroleum Products [Member] Crude Oil And Refined Petroleum Products Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Variable Interest Entities (VIEs) [Member] Variable Interest Entity, Primary Beneficiary [Member] Variable Interest Entity, Primary Beneficiary [Member] Offsetting fair value amounts of commodity derivative contracts Derivatives, Offsetting Fair Value Amounts, Policy [Policy Text Block] Total Valero Energy Corporation stockholders’ equity Equity, Attributable to Parent Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Fair Value by Measurement Frequency [Axis] Measurement Frequency [Axis] Insider Trading Policies and Procedures [Line Items] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Hedging Designation [Domain] Hedging Designation [Domain] Revenue by Segment Segment Reporting Information, Revenue for Reportable Segment [Abstract] Segment Reporting, Asset Reconciling Item [Line Items] Segment Reporting, Asset Reconciling Item [Line Items] Current assets: Assets, Current [Abstract] IEnova Revolver [Member] IEnova Revolver [Member] IEnova Revolver [Member] Total liabilities and equity Liabilities and Equity Fair Value, Recurring [Member] Fair Value, Recurring [Member] Defined Benefit Plans Items [Member] Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Interest rate at period end (percent) Line of Credit Facility, Interest Rate at Period End Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) [Table] Derivative instruments collateral requirements Concentration Risk, Credit Risk, Policy [Policy Text Block] LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Gain Contingencies [Table] Gain Contingencies [Table] Cover [Abstract] Cover [Abstract] Less: Net income (loss) attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Expenditures for long-lived assets Segment, Expenditure, Addition to Long-Lived Assets Accounting Policies [Abstract] Accounting Policies [Abstract] Taxes other than income taxes payable Increase (Decrease) in Property and Other Taxes Payable Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Segment Information for our Reportable Segments Segment Reporting Information, Operating Income (Loss) [Abstract] Debt Instrument [Line Items] Debt Instrument [Line Items] Effect of Derivative Instruments on Income Derivative, Gain (Loss) on Derivative, Net [Abstract] Treasury Stock [Member] Treasury Stock, Common [Member] Net carrying value on balance sheet, assets Assets, Fair Value Disclosure, Gross Liability, And Obligation To Return Cash, Offset, Net Fair value of financial and nonfinancial assets, net of the fair value of any liability associated with the financial assets and any amount of obligation to return cash collateral under master netting arrangements. Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Debt (excluding finance lease obligations), at carrying amount Debt, Long-Term and Short-Term, Combined Amount Distillers Grains [Member] Distillers Grains [Member] Distillers Grains [Member] Retirement Benefits [Abstract] Retirement Benefits [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Liabilities Liabilities [Abstract] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Depreciation and amortization expense Depreciation, Depletion and Amortization, Nonproduction Nonmonetary notional amount of price risk derivatives, volume Derivative, Nonmonetary Notional Amount, Volume Income (loss) before income tax expense (benefit) Income (loss) before income tax expense (benefit) Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity shell company Entity Shell Company Other long-term liabilities Other Liabilities, Noncurrent Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Proceeds from debt issuances and borrowings Proceeds from Issuance of Debt Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments [Member] Operating Segments [Member] Schedule of Cash Flows, Supplemental Disclosures Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Schedule of Variable Interest Entities [Table] Variable Interest Entity [Table] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Less: Comprehensive loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Line of Credit Facility [Table] Line of Credit Facility [Table] Long-term liabilities Increase (Decrease) in Other Noncurrent Liabilities Diamond Green Diesel Holdings LLC (DGD) [Member] Variable Interest Entity, Primary Beneficiary, Diamond Green Diesel Holdings LLC [Member] Variable Interest Entity, Primary Beneficiary, Diamond Green Diesel Holdings LLC [Member] Comprehensive income (loss) attributable to Valero Energy Corporation stockholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Name Measure Name Retention and separation benefit liability Restructuring Reserve Line of Credit Facility Line of Credit Facility [Abstract] Class of Stock [Line Items] Class of Stock [Line Items] Deferred income tax liabilities Deferred Income Tax Liabilities, Net Document fiscal period focus Document Fiscal Period Focus Receivable for recovery of import duties, gross Receivable for Recovery of Import Duties, Gross Receivable for Recovery of Import Duties, Gross Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Award Timing Method Award Timing Method [Text Block] Award Type Award Type [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Foreign Currency Translation Adjustment [Member] Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Legal Entity [Axis] Legal Entity [Axis] Total assets Segment assets Assets Assets Trading symbol Trading Symbol Entity address, city or town Entity Address, City or Town Short-term Debt, Type [Domain] Short-Term Debt, Type [Domain] Impairment (Textual) Asset Impairment Charges [Abstract] Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Receivable Type [Axis] Receivable Type [Axis] Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax One-time costs Business Exit Costs Effect of foreign exchange rate changes on cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation INVENTORIES Inventory Disclosure [Text Block] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Distillates [Member] Distillates [Member] Distillates product revenue [Member] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Assets Assets, Fair Value Disclosure [Abstract] 5.150% Valero Senior Notes Due 2030 [Member] Senior Notes Due In 2030, 5.150% [Member] Senior Notes Due In 2030, 5.150% Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Entity emerging growth company Entity Emerging Growth Company Variable interest entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] Asset impairment loss Impairment, Long-Lived Asset, Held-for-Use Entity common stock, shares outstanding Entity Common Stock, Shares Outstanding Decrease (increase) in current assets: Increase (Decrease) in Operating Assets [Abstract] Changes in lease balances resulting from new and modified leases, operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability 3.65% Valero Senior Notes Due 2025 [Member] Senior Notes Due In 2025, 3.65% [Member] Senior Notes Due In 2025, 3.65% Cash collateral paid not offset Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset Repayments, short-term credit facilities Repayments of Lines of Credit Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Revenues Revenue from Contract with Customer, Including Assessed Tax Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Gain (loss) recognized in income on derivatives Derivative, Gain (Loss) on Derivative, Net Investments in nonconsolidated joint ventures Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Renewable Diesel [Member] Renewable Diesel [Member] Renewable Diesel [Member] PEO PEO [Member] Price Risk Management Activities (Textual) General Discussion of Derivative Instruments and Hedging Activities [Abstract] Operating expenses (excluding depreciation and amortization expense reflected below) Cost, Overhead Proceeds from issuance of senior long-term debt Proceeds from Issuance of Senior Long-Term Debt Income taxes payable Accrued Income Taxes, Current Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Number of subsidiaries Number Of Subsidiaries Number Of Subsidiaries Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Retained Earnings [Member] Retained Earnings [Member] Prepaid expenses and other Prepaid Expense and Other Assets, Current Entity address, postal zip code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Cash, cash equivalents, and restricted cash at beginning of period Cash, cash equivalents, and restricted cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Income tax expense (benefit) Income Tax Expense (Benefit) Derivatives Designated as Economic Hedges [Member] Not Designated as Hedging Instrument, Economic Hedge [Member] Inventories (Textual) Inventory Adjustments [Abstract] Fair Value, Nonrecurring [Member] Fair Value, Nonrecurring [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Derivatives Designated as Hedges [Member] Derivatives Designated as Hedging Instruments [Member] Designated as Hedging Instrument [Member] Product and Service [Domain] Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Hedging Relationship [Axis] Hedging Relationship [Axis] Valero Energy Corporation Stockholders' Equity [Member] Parent [Member] Net income (loss) Net income (loss) Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Total gross fair value, liabilities Liabilities measured at fair value Liabilities, Fair Value Disclosure Asset retirement obligation, liabilities incurred Asset Retirement Obligation, Liabilities Incurred Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Operating cash flows Cash Flow, Operating Activities, Lessee [Abstract] Cost of materials and other Compliance program costs Cost, Direct Material Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Nonrecurring Fair Value Measurements (Textual) Fair Value Measurements, Nonrecurring Value Measurement [Abstract] Accumulated depreciation Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization City area code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Accrued expenses Accrued Liabilities, Current Class of Treasury Stock [Table] Class of Treasury Stock [Table] Supplemental Cash Flow Information Lessee Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Borrowings, long-term credit facilities Proceeds from Long-Term Lines of Credit Schedule of Contract Balances Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative expenses (excluding depreciation and amortization expense reflected below) General and Administrative Expense Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Blender's Tax Credit Receivable [Member] Blender's Tax Credit Receivable [Member] Blender's Tax Credit Receivable Assets Held in Trust [Member] Defined Benefit Plan, Assets Held in Trust [Member] Defined Benefit Plan, Assets Held in Trust [Member] Amortization of: Amortization [Abstract] Clean fuel production credits Clean Fuel Production Credit, Held-For-Sale, Fair Value Disclosure Clean Fuel Production Credit, Held-For-Sale, Fair Value Disclosure Net actuarial gain Defined Benefit Plan, Amortization of Gain (Loss) Subsequent Event [Member] Subsequent Event [Member] Cost of Materials and Other [Member] Cost of Sales [Member] Cash Flow Hedges [Member] Cash Flow Hedging [Member] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Incremental depreciation Depreciation Derivative contracts Derivative liability, subject to netting Derivative Liability, Subject to Master Netting Arrangement, before Offset Ethanol feedstocks and products Ethanol Feedstocks and Products Carrying amount as of the balance sheet date of ethanol feedstocks and products. Equity Components [Axis] Equity Components [Axis] Stock Repurchase Program, Approved February 2026 [Member] Stock Repurchase Program Approved February 2026 [Member] Stock Repurchase Program Approved February 2026 Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Receivable, Net [Member] Trade Accounts Receivable [Member] Impaired Long-Lived Assets Held and Used [Line Items] Impaired Long-Lived Assets Held and Used [Line Items] Number of reportable segments Number of Reportable Segments Revenues [Member] Sales [Member] Supplemental Cash Flow Information [Abstract] Supplemental Cash Flow Information [Abstract] Revenues from External Customers [Line Items] Revenue from External Customer [Line Items] VARIABLE INTEREST ENTITIES Variable Interest Entity Disclosure [Text Block] Other Performance Measure, Amount Other Performance Measure, Amount Current portion of debt and finance lease obligations Debt, Current Entity address, state or province Entity Address, State or Province Finance Leases Finance Lease, Principal Payments Dividends on common stock Dividends Deferred charges and other assets Increase (Decrease) in Deferred Charges Total current liabilities Current liabilities, including current portion of debt and finance lease obligations Liabilities, Current Futures, 2026 Maturity [Member] Future, Maturity Current Year [Member] A forward-based futures contract maturing during the current fiscal year. Less: Capitalized interest Interest Costs Capitalized Adjustment Derivative Instrument [Axis] Derivative Instrument [Axis] Individual: Individual [Axis] Investments of certain benefit plans Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount Property, plant, and equipment, at cost Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Financial liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Collection of blender's tax credit receivable Increase (Decrease) in Other Receivables Changes in lease balances resulting from new and modified leases, finance leases Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Other current assets Other Assets, Current Common stock dividend payments Payments of Ordinary Dividends, Common Stock Additional paid-in capital Additional Paid in Capital, Common Stock Entity [Domain] Entity [Domain] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Inventories [Member] Inventories [Member] Number of plants owned by DGD joint venture Number Of Renewable Diesel Plants Owned By Joint Venture Number Of Renewable Diesel Plants Owned By Joint Venture Interest paid in excess of amount capitalized, including interest on finance leases Interest Paid, Excluding Capitalized Interest, Operating Activity Contributions from noncontrolling interests Proceeds from Noncontrolling Interests Document fiscal year focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Entity interactive data current Entity Interactive Data Current Equity: Equity [Abstract] Equity [Abstract] Ethanol [Member] Ethanol [Member] Ethanol. Total Assets by Reportable Segments to Consolidated Segment Reconciliation [Abstract] Derivatives Derivatives, Policy [Policy Text Block] REVENUES AND SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Derivatives Not Designated as Hedging Instruments [Member] Not Designated as Hedging Instrument [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Increase (Decrease) in Stockholders' Equity Roll Forward Increase (Decrease) in Stockholders' Equity [Roll Forward] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Cash flows related to interest and income taxes Cash Flows Related to Interest and Income Taxes [Abstract] Cash Flows Related to Interest and Income Taxes [Abstract] Schedule of Changes in Components of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Deferred turnaround and catalyst cost expenditures Payments for Capital Improvements Schedule of Contract Balances Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract] Refining [Member] Refining [Member] Refining. Entity central index key Entity Central Index Key Settlement loss Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Other comprehensive income (loss): Other Comprehensive Income (Loss), before Tax [Abstract] PEO Name PEO Name Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Supplemental Cash Flow Information (Textual) Supplemental Cash Flow Elements [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Common stock dividends: Dividends, Common Stock [Abstract] DGD Revolver, Letter of Credit [Member] DGD Revolver Letter Of Credit [Member] DGD Revolver Letter Of Credit Materials and supplies Inventory, Raw Materials and Supplies, Gross Other corporate expenses Other General Expense Prepaid expenses and other Increase (Decrease) in Prepaid Expense and Other Assets Segments [Axis] Segments [Axis] Schedule of Fair Values of Derivative Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Exercise Price Award Exercise Price Entity filer category Entity Filer Category Local phone number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Other investing activities, net Payment for (Proceeds from) Other Investing Activity Other operating activities, net Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Subsequent Event Type [Axis] Subsequent Event Type [Axis] Taxes other than income taxes Taxes, Other than Income Taxes Taxes, Other than Income Taxes Long [Member] Long [Member] ASSETS Assets Assets [Abstract] Refinery feedstocks Energy Related Inventory, Crude Oil and Natural Gas Liquids Blending program obligations Accrued Liabilities, Fair Value Disclosure Credit Facility [Axis] Credit Facility [Axis] Refund claim Refund Claim Refund Claim Underlying Security Market Price Change Underlying Security Market Price Change, Percent Balance Sheet Location [Axis] Statement of Financial Position Location, Balance [Axis] Components of net periodic benefit cost: Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Debt Instrument [Axis] Debt Instrument [Axis] FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] EMPLOYEE BENEFIT PLANS Retirement Benefits [Text Block] Credit Facility [Domain] Credit Facility [Domain] Valero Energy Corporation stockholders’ equity: Equity, Attributable to Parent [Abstract] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity address, address line one Entity Address, Address Line One Purchases of common stock for treasury Treasury Stock, Value, Acquired, Cost Method Accumulated Other Comprehensive Loss [Member] AOCI Attributable to Parent [Member] Interest rate of notes (percent) Debt Instrument, Interest Rate, Stated Percentage Corn (in thousands of bushels) [Member] Grain In Bushels [Member] Commodity two - grains in bushels. Revenues from External Customers by Product Revenue from External Customers by Products and Services [Table Text Block] PRICE RISK MANAGEMENT ACTIVITIES Derivative Instruments and Hedging Activities Disclosure [Text Block] Renewable Naphtha [Member] Renewable Naphtha Product [Member] Renewable Naphtha Product Prior service cost Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Derivative contracts, not subject to netting Derivative liability, not subject to netting Derivative Liability, Not Subject to Master Netting Arrangement Derivative contracts Derivative asset, subject to netting Derivative Asset, Subject to Master Netting Arrangement, before Offset Depreciation and amortization expense Depreciation, Amortization and Accretion, Net Fair Value as of Grant Date Award Grant Date Fair Value Entity registrant name Entity Registrant Name Fair Values of Derivative Instruments Derivative Instrument Detail [Abstract] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Renewable diesel feedstocks and products Renewable Diesel Feedstocks and Products Carrying amount as of the balance sheet date of renewable diesel feedstocks and products. Current assets and current liabilities (see Note 11) Changes in current assets and current liabilities Increase (Decrease) In Operating Capital, Current The increase (decrease) during the reporting period of all current assets and liabilities used in operating activities. Document quarterly report Document Quarterly Report Gain Contingency, Nature [Domain] Gain Contingency, Nature [Domain] Total gross fair value, assets Assets measured at fair value Assets, Fair Value Disclosure Segment, Reconciliation of Other Items from Segments to Consolidated Segment, Reconciliation of Other Items from Segments to Consolidated [Table Text Block] Deferred income tax benefit Deferred Income Taxes and Tax Credits Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Energy [Axis] Energy [Axis] Valero Energy Corporation [Member] Valero Energy Corporation [Member] Valero Energy Corporation [Member] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Other Product Revenues [Member] Manufactured Product, Other [Member] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Interest cost Defined Benefit Plan, Interest Cost Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Repayments, long-term credit facilities Repayments of Long-Term Lines of Credit Restatement Determination Date: Restatement Determination Date [Axis] Transactions in connection with stock-based compensation plans Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Non-PEO NEO Non-PEO NEO [Member] Letters of credit issued Letters of Credit Outstanding, Amount Accumulated Other Comprehensive Loss [Table] Accumulated Other Comprehensive Income (Loss) [Table] Contributions from noncontrolling interests Noncontrolling Interest, Increase from Subsidiary Equity Issuance Position [Domain] Position [Domain] Other financing activities, net Proceeds from (Payment for) Other Financing Activity Accumulated Other Comprehensive Loss [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Amounts reclassified from accumulated other comprehensive loss Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Monetary notional amount of derivative liabilities Derivative Liability, Notional Amount Name Trading Arrangement, Individual Name All Award Types Award Type [Domain] Loss recognized in other comprehensive income (loss) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Net gain (loss) on cash flow hedges Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax Noncontrolling interests Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Compensation Amount Outstanding Recovery Compensation Amount Face amount of long-term debt issuance Debt Instrument, Face Amount Neat SAF [Member] Neat SAF [Member] Neat SAF Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Volume of Outstanding Contracts Notional Disclosures [Abstract] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Foreign Currency Contracts [Member] Foreign Exchange Contract [Member] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Share Purchase Program [Axis] Share Repurchase Program [Axis] Clean fuel production credit Cost, Direct Materials, Clean Fuel Production Credit Cost, Direct Materials, Clean Fuel Production Credit MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name Energy [Domain] Energy [Domain] Restructuring Type [Axis] Restructuring Type [Axis] 2.850% Valero Senior Notes Due 2025 [Member] Senior Notes Due In 2025, 2.850% [Member] Senior Notes Due In 2025, 2.850% Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items] Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] DGD Letter of Credit Facility [Member] DGD Letter of Credit Facility [Member] DGD Letter of Credit Facility Schedule of Balance Sheet Information of Consolidated VIEs Variable Interest Entity, Primary Beneficiary, Does Not Hold Majority Voting Interest, Disclosures [Abstract] Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Debt and finance lease obligations, less current portion Long-Term Debt and Lease Obligation Includes excise taxes on sales 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