Cover Page - shares	6 Months Ended
	Jun. 30, 2022	Aug. 02, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2022
Document Transition Report	false
Entity File Number	1-10447
Entity Registrant Name	COTERRA ENERGY INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-3072771
Entity Address, Address Line One	Three Memorial City Plaza
Entity Address, Address Line Two	840 Gessner Road,
Entity Address, Address Line Three	Suite 1400,
Entity Address, City or Town	Houston,
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77024
City Area Code	281
Local Phone Number	589-4600
Title of 12(b) Security	Common Stock, par value $0.10 per share
Trading Symbol	CTRA
Security Exchange Name	NYSE
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		795,595,177
Entity Central Index Key	0000858470
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Amendment Flag	false