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Document and Entity Information
Nov. 25, 2025
Cover [Abstract]  
Entity Registrant Name LandBridge Co LLC
Amendment Flag false
Entity Central Index Key 0001995807
Document Type 8-K
Document Period End Date Nov. 25, 2025
Entity Incorporation State Country Code DE
Entity File Number 001-42150
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
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Class A shares representing limited liability company interests
Trading Symbol LB
Security Exchange Name NYSE
Entity Emerging Growth Company true
Entity Ex Transition Period false