Guarantees (Details) $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($)
Kinder Morgan Energy Partners, L.P. \| Payment Guarantee
Guarantor Obligations [Line Items]
Principal Amount Guaranteed	$ 190
Maximum Future Payments	190
Maximum Recourse Amount	0
Capitalized Obligations	$ 2
Kinder Morgan Energy Partners, L.P. \| Payment Guarantee \| Kinder Morgan Energy Partners, L.P.
Guarantor Obligations [Line Items]
BNSF Ownership Percentage	0.50%
Chevron Phillips Chemical Company, LP \| Indemnification Agreement
Guarantor Obligations [Line Items]
Remaining Term (in years)	6 years
Capitalized Obligations	$ 12
Chevron Phillips Chemical Company, LP \| Indemnification Agreement \| Chevron Phillips Chemical Company, LP
Guarantor Obligations [Line Items]
BNSF Ownership Percentage	0.00%

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- Definition

Principal Amount Guaranteed

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- Definition

Remaining Term

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- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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