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Insurance Coverage Limit

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Loss Contingency, Clean-Up And Remediate Aggregate Cost

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The amount of clean-up and remediation activities pertaining to the specified contingency that was incurred in the period.

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Amount retained by the entity before insurance begins to provide coverage.

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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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Amount of loss contingency liability.

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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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Amount of loss (reversal of loss) recognized for loss contingency liability. Includes, but is not limited to, effect of revision in previously reported estimate.

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Amount of cash inflow from the collection of receivables related to a loss contingency.

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Commitments and Contingencies - Narrative (Details) $ in Millions	1 Months Ended		6 Months Ended		12 Months Ended
	May 31, 2026 USD ($) bbl	Mar. 31, 2025 USD ($) bbl	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Line 901 Incident
Loss Contingencies [Line Items]
Aggregate total estimated costs			$ 870
Costs related to the line 901 incident			0	$ 0
Line 901 Incident \| Balance Sheet Location [Axis]: us-gaap:LiabilitiesCurrent
Loss Contingencies [Line Items]
Remaining undiscounted liability			23		$ 22
Line 901 2015 Insurance Program
Loss Contingencies [Line Items]
Recoveries from insurance carriers			295		295
Coverage limit under insurance program			500		$ 500
Line 48 Incident
Loss Contingencies [Line Items]
Estimated size of release (in barrels) \| bbl		125
Self-insured retention		$ 10
Clean-up and remediation activities			$ 13
Line 63 Incident
Loss Contingencies [Line Items]
Estimated size of release (in barrels) \| bbl	585
Self-insured retention	$ 10
Aggregate cost to clean-up and remediate	$ 40