Shareholders' Equity - Schedule of Cancellations of Share (Details) - shares	3 Months Ended	9 Months Ended
Sep. 30, 2026	Jun. 30, 2026	Mar. 31, 2026	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2026	Sep. 30, 2025
Class B Shares \| LandBridge
Class of Stock [Line Items]
Class B Share Cancellations Due to Tax Distributions	74,128	102,987	73,141	119,987	79,686	34,674	250,256	234,347

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details