| Document and Entity Information | Nov. 18, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 18, 2024 |
| Entity File Number | 001-42150 |
| Entity Registrant Name | LandBridge Company LLC |
| Entity Central Index Key | 0001995807 |
| 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 Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
