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Commitments and Contingencies - Litigation (Details)		1 Months Ended
	Jun. 25, 2021 claimant	Dec. 31, 2020 count
CRRM | Environmental, Health, and Safety Matters | Clean Air Act Matter
Loss Contingencies [Line Items]
Number of counts asserted related to alleged violations | count		9
WRC and Others | Small Refinery Exemption
Loss Contingencies [Line Items]
Number of refineries whose SREs were vacated under RFS program under the CAA	3
WRC | Small Refinery Exemption
Loss Contingencies [Line Items]
Number of refineries whose SREs were vacated under RFS program under the CAA	1

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+ References

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- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

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- Definition

Number of defendants named in a legal action.

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