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v3.26.1

Commitments and Contingencies - Narrative (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
May 31, 2025 bbl | Mar. 31, 2025 USD ($) bbl | Jun. 30, 2026 USD ($) | Mar. 31, 2026 USD ($) | Jun. 30, 2026 USD ($) | Jun. 30, 2025 USD ($) | May 31, 2026 USD ($) | Dec. 31, 2025 USD ($)
Line 901 Incident |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Aggregate total estimated costs |  |  | $ 870 |  | $ 870 |  |  |
Loss contingency accrual, loss (reversal of loss) |  |  |  |  | 0 | $ 0 |  |
Line 901 Incident | Balance Sheet Location [Axis]: us-gaap:LiabilitiesCurrent |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Remaining undiscounted liability |  |  | 23 |  | 23 |  |  | $ 22
Line 901 2015 Insurance Program |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Recoveries from insurance carriers |  |  | 295 | $ 295 |  |  |  |
Coverage limit under insurance program |  |  | 500 |  | 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 |  | $ 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 |

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