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Shareholders' and Member's Equity - Additional Information (Details) - USD ($) |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Feb. 24, 2026 | Nov. 18, 2025 | Nov. 12, 2025 | May 23, 2025 | Dec. 31, 2024 | Dec. 31, 2025 | Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Shareholders' and Member's Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of opco units redeemed |  |  |  |  |  |  |  |  |  | 4,400,000 |  |
Expenses on sale of stock |  |  |  |  |  |  |  |  |  | $ 1,112,000 | $ 8,186,000 | $ 1,706,000
Share based compensation arrangement by share based payment grant date fair value |  |  |  |  |  |  |  |  |  | 53,586,000 |  |
LandBridge |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of opco units redeemed |  | 2,500,000 |  | 1,900,000 |  |  |  |  |  |  |  |
Expenses on sale of stock |  | $ 800,000 |  |  |  |  |  |  |  |  |  |
Tax Distributions Paid |  |  |  |  |  | $ 3,177,000 | $ 7,140,000 | $ 16,650,000 | $ 5,821,000 | $ 32,788,000 |  |
Sole Liability |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Limited liability interests |  |  |  |  |  |  |  |  |  | 100.00% |  |
Class A Shares | LandBridge |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of opco units redeemed |  | 2,500,000 |  | 1,900,000 |  |  |  |  |  |  |  |
Price per share |  | $ 70 |  | $ 75.25 |  |  |  |  |  |  |  |
Number of consecutive trading days |  |  |  |  |  | 10 days | 10 days | 10 days | 10 days |  |  |
Class B Shares |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of opco units redeemed |  |  |  |  |  |  |  |  |  | 4,400,000 |  |
Share based compensation arrangement by share based payment grant date fair value |  |  | $ 53,600,000 |  |  |  |  |  |  |  |  |
Shares converted |  |  |  |  |  |  |  |  |  |  | 0 |
Class B Shares | December Private Placement | LandBridge |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of OpCo units purchesd by private placement |  |  |  |  | 2,498,751 |  |  |  |  |  |  |
Subsequent Event | LandBridge |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Tax Distributions Paid | $ 5,300,000 |  |  |  |  |  |  |  |  |  |  |
One Nine One Eight Ranch and Royalty, LLC |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of OpCo units issued as part of purchase consideration |  |  | 657,411 |  |  |  |  |  |  |  |  |
One Nine One Eight Ranch and Royalty, LLC | Class B Shares |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of OpCo units issued as part of purchase consideration |  |  | 657,411 |  |  |  |  |  |  |  |  |
O 2025 Q3 Dividends |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Dividend payable record date |  |  |  |  |  |  | Sep. 04, 2025 |  |  |  |  |
O 2025 Q3 Dividends | Subsequent Event | Class A Shares |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Dividend declared date | Feb. 24, 2026 |  |  |  |  |  |  |  |  |  |  |
Dividend declared | $ 0.12 |  |  |  |  |  |  |  |  |  |  |
Dividend declared payable date | Mar. 19, 2026 |  |  |  |  |  |  |  |  |  |  |
Dividend payable record date | Mar. 05, 2026 |  |  |  |  |  |  |  |  |  |  |
Maximum | Subsequent Event | Class A Shares |  |  |  |  |  |  |  |  |  |  |  |
Shareholders' and Member's Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Share repurchase program, authorized amount | $ 50,000,000 |  |  |  |  |  |  |  |  |  |  |

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