Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2023	Nov. 14, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2023
Entity Tax Identification Number	20-0700684
Entity Registrant Name	Battalion Oil Corp
Entity Incorporation, State or Country Code	DE
Entity File Number	001-35467
Entity Address, Address Line One	3505 West Sam Houston Parkway North
Entity Address, Address Line Two	Suite 300
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77043
City Area Code	832
Local Phone Number	538-0300
Title of 12(b) Security	Common Stock, par value $0.0001
Trading Symbol	BATL
Security Exchange Name	NYSEAMER
Amendment Flag	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		16,456,563
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0001282648
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3