Environmental Costs Recognized, Period For Recognition

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- Definition

Environmental Costs Recognized, Period For Recognition Of One Third Costs

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Environmental Costs Recognized, Period for Recognition

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- Definition

Renewable Fuel Standard Obligation Percent

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

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-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
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- Definition

Estimated amount of loss resulting from an adverse tax position.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The difference between the maximum amount of estimated loss and the amount recorded as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 20
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Commitments and Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Mar. 31, 2022	Jun. 30, 2026
Long-term Purchase Commitment [Line Items]
Renewable fuel standard obligation (in percentage)	100.00%		100.00%
Montana Refinery System
Long-term Purchase Commitment [Line Items]
Accrual for environmental loss contingencies	$ 8,600		$ 8,600
Wyoming Refinery One
Long-term Purchase Commitment [Line Items]
Accrual for environmental loss contingencies	15,800		$ 15,800
Environmental costs recognized, period for recognition of one third costs (in years)			5 years
Environmental costs recognized, period for recognition (in years)			25 years
Wyoming Refinery
Long-term Purchase Commitment [Line Items]
Loss contingency, range of possible loss, portion not accrued	$ 300		$ 300
Montana Refinery System \| Minimum
Long-term Purchase Commitment [Line Items]
Environmental costs recognized, period for recognition (in years)			17 years
Montana Refinery System \| Maximum
Long-term Purchase Commitment [Line Items]
Environmental costs recognized, period for recognition (in years)			27 years
Washington Department of Revenue \| State Tax Authority
Long-term Purchase Commitment [Line Items]
Income tax examination, estimate of possible loss		$ 1,400