Debt and Finance Lease Obligations, Activity Under Credit Facilities (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounts Receivable Sales Facility [Member] \| Line of Credit [Member]
Line of Credit Facility
Borrowings, short-term credit facilities	$ 0	$ 300	$ 900
Repayments, short-term credit facilities	0	(400)	(900)
DGD Revolver [Member] \| Line of Credit [Member] \| DGD [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
Line of Credit Facility
Borrowings, long-term credit facilities	276	0	0
Repayments, long-term credit facilities	(176)	0	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	25	0	0
IEnova Revolver [Member] \| Line of Credit [Member] \| Central Mexico Terminals [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
Line of Credit Facility
Borrowings, short-term credit facilities	$ 81	$ 250	$ 239

No definition available.

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- Definition

The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585

+ Details

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- Definition

The cash inflow from a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

+ References

+ Details

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- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

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Balance Type:	credit
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- Definition

The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

+ References

+ Details

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