Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2024	Aug. 08, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Entity Central Index Key	0001995807
Entity Registrant Name	LandBridge Company LLC
Entity File Number	001-42150
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	93-3636146
Entity Address, Address Line One	5555 San Felipe Street
Entity Address, Address Line Two	Suite 1200
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77056
City Area Code	713
Local Phone Number	230-8864
Title of 12(b) Security	Class A shares, representing limited liability company interests
Trading Symbol	LB
Security Exchange Name	NYSE
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Class A Shares
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		17,425,000
Class B Shares
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		55,726,603