Cover	3 Months Ended
	Mar. 31, 2023 shares
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Entity Registrant Name	ConocoPhillips
Document Period End Date	Mar. 31, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	01-0562944
Entity Address, Address Line One	925 N. Eldridge Parkway
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77079
City Area Code	281
Local Phone Number	293-1000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	1,210,058,689
Entity Central Index Key	0001163165
Amendment Flag	false
Entity File Number	001-32395
Common Stock, $.01 Par Value
Entity Listings [Line Items]
Title of 12(b) Security	Common Stock, $.01 Par Value
Trading Symbol	COP
Security Exchange Name	NYSE
7% Debentures due 2029
Entity Listings [Line Items]
Title of 12(b) Security	7% Debentures due 2029
Trading Symbol	CUSIP—718507BK1
Security Exchange Name	NYSE