Debt, Credit Facilities (Details)		Mar. 31, 2023 USD ($)	Mar. 31, 2023 CAD ($)	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		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	[2],[3]	400,000,000
Outstanding borrowings, long term	[2],[3]	100,000,000
Availability	[2],[3]	$ 225,000,000
Interest rate at period end (percent)		6.46%	6.46%	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],[2],[3]	$ 75,000,000
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	[2],[4]	25,000,000
Outstanding borrowings, short-term	[2],[4]	25,000,000
Availability	[2],[4]	$ 0
Interest rate at period end (percent)		7.173%	7.173%	6.672%
IEnova Revolver [Member] | Credit Facilities [Member] | Central Mexico Terminals [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Line of Credit Facility
Facility amount	[2],[5]	$ 830,000,000
Outstanding borrowings, long term	[2],[5]	710,000,000
Availability	[2],[5]	$ 120,000,000
Interest rate at period end (percent)		8.443%	8.443%	7.393%
Uncommitted Letter of Credit Facility [Member] | Credit Facilities [Member]
Line of Credit Facility
Letters of credit issued	[1]	$ 158,000,000

[1] Letters of credit issued as of March 31, 2023 expire at various times in 2023 through 2024.

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

[3] The variable interest rate on the DGD Revolver was 6.460 percent and 5.880 percent as of March 31, 2023 and December 31, 2022, respectively.

[4] 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. The variable interest rate on the DGD Loan Agreement was 7.173 percent and 6.672 percent as of March 31, 2023 and December 31, 2022, respectively. We expect this facility to be renewed prior to its maturity date.

[5] The variable interest rate on the IEnova Revolver was 8.443 percent and 7.393 percent as of March 31, 2023 and December 31, 2022, respectively.