| Document and Entity Information | Dec. 19, 2024 |
| Cover [Abstract] | |
| Entity Registrant Name | LandBridge Co LLC |
| Amendment Flag | true |
| Entity Central Index Key | 0001995807 |
| Document Type | 8-K/A |
| Document Period End Date | Dec. 19, 2024 |
| 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 |
| Amendment Description | On December 26, 2024, LandBridge Company LLC (NYSE: LB) (the “Company”) filed a Current Report on Form 8-K (the “Original Report”) with the U.S. Securities and Exchange Commission. The Original Report disclosed the consummation of the Company’s previously announced acquisition of approximately 46,000 surface acres (“Wolf Bone Ranch”) located in Reeves and Pecos Counties, Texas (the “Acquisition”), pursuant to that certain Purchase and Sale Agreement between DBR Land LLC, a Delaware limited liability company and an indirect, wholly-owned subsidiary of the Company, and Wolf Bone Ranch Partners LLC, a Texas limited liability company. The Acquisition was consummated on December 19, 2024. This Current Report on Form 8-K/A amends the Original Report to include the financial statements required by Item 9.01(a) and the pro forma financial information required by Item 9.01(b). Except as provided herein, the disclosures made in the Original Report remain unchanged. |
