Debt, Credit Facilities (Details)		Jun. 30, 2023 USD ($)	Jun. 30, 2023 CAD ($)	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		3,994,000,000
Valero Revolver Letter of Credit [Member] | Credit Facilities [Member]
Line of Credit Facility
Letters of credit issued	[1]	6,000,000
Canadian Revolver [Member] | Credit Facilities [Member]
Line of Credit Facility
Facility amount			$ 150,000,000
Outstanding borrowings, short-term			0
Availability			145,000,000
Canadian Revolver Letter of Credit [Member] | Credit Facilities [Member]
Line of Credit Facility
Letters of credit issued	[1]		$ 5,000,000
Accounts Receivable Sales Facility [Member] | Credit Facilities [Member]
Line of Credit Facility
Facility amount	[2]	1,300,000,000
Outstanding borrowings, short-term	[2]	0
Availability	[2]	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]	50,000,000
Availability	[3],[4]	$ 292,000,000
Interest rate at period end (percent)		6.98%	6.98%		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]	$ 58,000,000
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
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	[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]	733,000,000
Availability	[3],[6]	$ 97,000,000
Interest rate at period end (percent)		8.74%	8.74%		7.393%
Uncommitted Letter of Credit Facility [Member] | Credit Facilities [Member]
Line of Credit Facility
Letters of credit issued	[1]	$ 70,000,000

[1] Letters of credit issued as of June 30, 2023 expire at various times in 2023 through 2024.

[2] In July 2023, we extended the maturity date of this facility to July 2024.

[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 6.980 percent and 5.880 percent as of June 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 facility to June 2023. In June 2023, DGD amended this facility to (i) extend the maturity date to June 2026, (ii) increase 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) transition 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 8.740 percent and 7.393 percent as of June 30, 2023 and December 31, 2022, respectively.