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v3.23.3

Uncertainty (Details) | 9 Months Ended
--- | ---
Sep. 30, 2023 refinery
California [Member] |
Uncertainty (Textual) |
Number of refineries | 2

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- Definition Number Of Refineries + References No definition available. + Details
Name: | vlo_NumberOfRefineries
Namespace Prefix: | vlo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Uncertainties + References No definition available. + Details
Name: | vlo_UncertaintiesAbstract
Namespace Prefix: | vlo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_StatementGeographicalAxis=stpr_CA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |