Long-Term Debt	3 Months Ended
Mar. 31, 2021
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term DebtOn January 6, 2021, the company announced that the aggregate principal amount of $5.697 billion of Noble Energy, Inc. (Noble) senior notes were exchanged for new senior notes issued by CUSA, guaranteed by Chevron, and have the same interest rates and maturity dates as the Noble senior notes. The aggregate principal amount of $5.697 billion Noble senior notes were validly tendered and accepted and subsequently terminated. Following such termination, $103 million aggregate principal amount remains outstanding across ten series of senior notes issued by Noble, for which Chevron provided no guarantee, and the indentures were modified to eliminate any financial reporting or credit rating requirements. In February 2021, the indenture governing Noble's 7.25 percent senior debentures due 2097 was modified to provide a guarantee by Chevron and eliminate any financial reporting or credit rating requirements. In the first three months of 2021, the company repaid $14 million of bonds at maturity.

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-URI http://asc.fasb.org/topic&trid=2208564

Name:	us-gaap_DebtDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration