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Debt, Credit Facilities (Details) - USD ($) | Sep. 30, 2025 | Dec. 31, 2024
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Valero Revolver [Member] | Credit Facilities [Member] |  |  |
Line of Credit Facility |  |  |
Facility amount | [1] | $ 4,000,000,000 |
Outstanding borrowings, long term | [1] | 0 |
Availability | [1] | 3,998,000,000 |
Valero Revolver, Letter of Credit [Member] | Credit Facilities [Member] |  |  |
Line of Credit Facility |  |  |
Letters of credit issued | [1],[2] | 2,000,000 |
Accounts Receivable Sales Facility [Member] | Credit Facilities [Member] |  |  |
Line of Credit Facility |  |  |
Facility amount |  | 1,300,000,000 |
Outstanding borrowings, short-term |  | 0 |
Availability |  | 1,300,000,000 |
DGD Revolver [Member] | Credit Facilities [Member] | Diamond Green Diesel Holdings LLC [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |  |
Line of Credit Facility |  |  |
Facility amount | [3],[4] | 400,000,000 |
Outstanding borrowings, long term | [3],[4] | 100,000,000 |
Availability | [3],[4] | $ 248,000,000 |
Interest rate at period end (percent) |  | 6.073% |
DGD Revolver, Letter of Credit [Member] | Credit Facilities [Member] | Diamond Green Diesel Holdings LLC [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |  |
Line of Credit Facility |  |  |
Letters of credit issued | [2],[3],[4] | $ 52,000,000 |
DGD Loan Agreement [Member] | Credit Facilities [Member] | Diamond Green Diesel Holdings LLC [Member] | Variable Interest Entity, Primary Beneficiary [Member] | Valero Energy Corporation [Member] |  |  |
Line of Credit Facility |  |  |
Facility amount | [4],[5] | 100,000,000 |
Outstanding borrowings, long term | [4],[5] | 0 |
Availability | [4],[5] | 100,000,000 |
IEnova Revolver [Member] | Credit Facilities [Member] | Central Mexico Terminals [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |  |
Line of Credit Facility |  |  |
Facility amount | [4],[6] | 830,000,000 |
Outstanding borrowings, long term | [4],[6] | 31,000,000 |
Availability | [4],[6] | $ 799,000,000 |
Interest rate at period end (percent) |  | 8.141% | 8.443%
Uncommitted Letter of Credit Facility [Member] | Credit Facilities [Member] |  |  |
Line of Credit Facility |  |  |
Letters of credit issued | [2] | $ 6,000,000 |
Uncommitted Letter of Credit Facility [Member] | Credit Facilities [Member] | Diamond Green Diesel Holdings LLC [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |  |
Line of Credit Facility |  |  |
Letters of credit issued | [2],[4] | $ 67,000,000 |
[1] | In October 2025, we extended the maturity date of this facility to October 2030.
[2] | Letters of credit issued as of September 30, 2025 expire at various times in 2025 through 2026.
[3] | The variable interest rate on the unsecured revolving credit facility with a syndicate of financial institutions (the DGD Revolver) was 6.073 percent as of September 30, 2025.
[4] | Creditors of the VIEs do not have recourse against us.
[5] | The amounts shown for DGD’s unsecured revolving loan agreement with its members (the DGD Loan Agreement) represent the facility amount available from, and borrowings outstanding to, the noncontrolling member as any transactions between DGD and us under this facility are eliminated in consolidation.
[6] | Central Mexico Terminals (defined in Note 6) has an unsecured revolving credit facility (the IEnova Revolver) with IEnova (defined in Note 6). The variable interest rate on the IEnova Revolver was 8.141 percent and 8.443 percent as of September 30, 2025 and December 31, 2024, respectively.

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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-15 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-12 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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- Definition The effective interest rate at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481544/470-10-50-6 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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