Debt, Credit Facilities (Details)		Sep. 30, 2023 USD ($)		Sep. 30, 2023 CAD ($)	Jun. 30, 2023 USD ($)	May 31, 2023 USD ($)	Dec. 31, 2022
Valero Revolver [Member] | Credit Facilities [Member]
Line of Credit Facility
Facility amount		$ 4,000,000,000
Outstanding borrowings, long term		0
Availability		3,996,000,000
Valero Revolver Letter of Credit [Member] | Credit Facilities [Member]
Line of Credit Facility
Letters of credit issued	[1]	4,000,000
Canadian Revolver [Member] | Credit Facilities [Member]
Line of Credit Facility
Facility amount	[2]			$ 150,000,000
Outstanding borrowings, short-term	[2]			0
Availability	[2]			145,000,000
Canadian Revolver Letter of Credit [Member] | Credit Facilities [Member]
Line of Credit Facility
Letters of credit issued	[1],[2]			$ 5,000,000
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]	200,000,000
Availability	[3],[4]	$ 94,000,000
Interest rate at period end (percent)		7.173%		7.173%			5.88%
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	[1],[3],[4]	$ 106,000,000
DGD Loan Agreement [Member] | Credit Facilities [Member] | Diamond Green Diesel Holdings LLC [Member] | Darling Ingredients Inc. [Member]
Line of Credit Facility
Facility amount						$ 25,000,000
DGD Loan Agreement [Member] | Credit Facilities [Member] | Diamond Green Diesel Holdings LLC [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Line of Credit Facility
Facility amount						50,000,000
Interest rate at period end (percent)							6.672%
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						$ 25,000,000
DGD Loan Agreement [Member] | Credit Facilities [Member] | Diamond Green Diesel Holdings LLC [Member] | Darling Ingredients Inc. [Member]
Line of Credit Facility
Facility amount		100,000,000			$ 100,000,000
DGD Loan Agreement [Member] | Credit Facilities [Member] | Diamond Green Diesel Holdings LLC [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Line of Credit Facility
Facility amount					200,000,000
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		100,000,000	[3],[5]		$ 100,000,000
Outstanding borrowings, long term	[3],[5]	0
Availability	[3],[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	[3],[6]	830,000,000
Outstanding borrowings, long term	[3],[6]	748,000,000
Availability	[3],[6]	$ 82,000,000
Interest rate at period end (percent)		9.097%		9.097%			7.393%
Uncommitted Letter of Credit Facility [Member] | Credit Facilities [Member]
Line of Credit Facility
Letters of credit issued	[1]	$ 177,000,000

[1] Letters of credit issued as of September 30, 2023 expire at various times in 2023 through 2026.

[2] On October 24, 2023, we amended this facility to (i) extend the maturity date to February 2024 and (ii) reduce the facility amount so that, effective October 31, 2023, the facility amount will equal the amount of the outstanding letters of credit thereunder, and will not permit further borrowings other than certain deemed borrowings to satisfy the reimbursement obligations under such letters of credit.

[3] Creditors of the VIEs do not have recourse against us.

[4] In June 2023, DGD amended this facility to (i) extend the maturity date to June 2026 and (ii) transition the benchmark reference interest rate previously based on the London Interbank Offered Rate (LIBOR) to a secured overnight financing rate (SOFR). The variable interest rate on the DGD Revolver was 7.173 percent and 5.880 percent as of September 30, 2023 and December 31, 2022, respectively.

[5] The amounts shown for this facility 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. In April 2023, DGD extended the maturity date of this agreement to June 2023. In June 2023, DGD entered into a new unsecured revolving loan agreement that replaced and superseded the previous agreement. The new agreement includes the following modifications from the previous agreement: (i) extends the maturity date to June 2026, (ii) increases each member’s commitment from $25 million to $100 million, resulting in an increase in aggregate commitments from $50 million to $200 million, and (iii) transitions the benchmark reference interest rate previously based on the LIBOR to Term SOFR. The variable interest rate on the DGD Loan Agreement was 6.672 percent as of December 31, 2022.

[6] Both parties to this facility have agreed to use a SOFR as the interest rate applied to outstanding borrowings. The variable interest rate on the IEnova Revolver was 9.097 percent and 7.393 percent as of September 30, 2023 and December 31, 2022, respectively.