Impairment	9 Months Ended
Impairment	Sep. 30, 2025
Impairment or Disposal of Tangible Assets Disclosure [Abstract]
IMPAIRMENT	2. IMPAIRMENT In recent years, the State of California adopted legislation that has subjected our refining and marketing operations to potential increased operational restrictions and new reporting requirements. The considerable uncertainty and potential adverse effects on our operations and financial performance resulted in the evaluation of strategic alternatives for our operations in California. In March 2025, we approved a plan with respect to the operations at our Benicia Refinery and currently intend to cease refining operations by the end of April 2026. In addition, we considered strategic alternatives for our remaining operations in California. As a result, we updated our evaluation of potential impairment and concluded that the carrying values of our Benicia and Wilmington refineries were not recoverable as of March 31, 2025. Therefore, we reduced the carrying values of these assets to their estimated fair values of $722 million and $847 million, respectively, and recognized a combined asset impairment loss of $1.1 billion in our Refining segment in March 2025. See Note 12 for disclosure related to the method used to determine the fair values. Included in the recoverability assessments discussed above was the recognition of expected asset retirement obligations of $337 million, which primarily reflects the fair value of estimated costs for certain legal obligations to decommission the assets based on a range of potential settlement dates as of March 31, 2025. In connection with our plan to cease refining operations at our Benicia Refinery, we shortened the estimated useful life of the refinery assets, and as a result, will depreciate the revised carrying value of the net property, plant, and equipment and other noncurrent assets to the estimated salvage value of $107 million through April 2026. Accordingly, in the three and nine months ended September 30, 2025, we recorded incremental depreciation of approximately $100 million and $200 million, respectively, in depreciation and amortization expense. In addition, we implemented a transition plan for the affected employees of the Benicia Refinery, which includes retention incentive payments and separation benefits. During the third quarter of 2025, we recognized a liability of $50 million for these one-time costs, which we expect to distribute to eligible employees by the end of the second quarter of 2026. These costs are included in operating expenses (excluding depreciation and amortization expense) in the three and nine months ended September 30, 2025 and are attributable to our Refining segment. We continue to evaluate strategic alternatives for our remaining operations in California.

VALERO ENERGY CORP/TX 10-Q