Debt and Finance Lease Obligations, Activity Under Credit Facilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounts Receivable Sales Facility [Member] | Line of Credit [Member]
Line of Credit Facility
Borrowings, short-term credit facilities	$ 1,600	$ 0	$ 300
Repayments, short-term credit facilities	(1,600)	0	(400)
DGD Revolver [Member] | Line of Credit [Member] | DGD [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Line of Credit Facility
Borrowings, long-term credit facilities	759	276	0
Repayments, long-term credit facilities	(759)	(176)	0
DGD Loan Agreement [Member] | Line of Credit [Member] | DGD [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Line of Credit Facility
Borrowings, short-term credit facilities	50	25	0
Repayments, short-term credit facilities	(50)	0	0
IEnova Revolver [Member] | Line of Credit [Member] | Central Mexico Terminals [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Line of Credit Facility
Borrowings, long-term credit facilities	105	81	250
Repayments, long-term credit facilities	$ (67)	$ 0	$ 0