Guarantees (Details) - Chevron Phillips Chemical Company, LP - Indemnification Agreement $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($)
Guarantor Obligations [Line Items]
Remaining Term (in years)	5 years
Capitalized Obligations	$ 10
Chevron Phillips Chemical Company, LP
Guarantor Obligations [Line Items]
BNSF Ownership Percentage	0.00%

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

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 https://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248

Name:	us-gaap_GuaranteeObligationsCurrentCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant