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Variable Interest Entities - Narrative (Details)				1 Months Ended							2 Months Ended	12 Months Ended
Variable Interest Entities - Narrative (Details)	May 12, 2025 USD ($) area license $ / a acre ft	Jun. 03, 2024	Sep. 18, 2022	May 31, 2025 $ / shares shares	Nov. 30, 2024 USD ($) shares	Oct. 31, 2024	Jul. 31, 2024 $ / shares shares	Jun. 30, 2024 USD ($) $ / shares shares	Jan. 31, 2024 $ / shares shares	Dec. 31, 2023 $ / shares shares	Aug. 31, 2023 $ / shares shares	Jun. 30, 2025 USD ($) shares	Dec. 31, 2024 USD ($)	Nov. 04, 2024 $ / shares	Nov. 01, 2024 $ / shares	Mar. 21, 2024	Mar. 04, 2024	Nov. 09, 2022
Variable Interest Entity [Line Items]
Commitments and contingencies (Note 12)
Capital raise (in shares) \| shares				2,180,515	312,500		308,750	3,125,000	443,548	1,274,525	1,503,309	312,500
Issue price (in USD per share) \| $ / shares				$ 17.74			$ 24.00	$ 24.00	$ 0.11	$ 0.11	$ 0.12			$ 19.04	$ 19.04
Asset sale agreement, number of areas sold \| license	2
Daly Waters Energy, LP (“DWE”) \| Beetaloo Basin
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage																		38.75%
Daly Waters Energy, LP (“DWE”) \| Beetaloo Basin, Phase 2 Development Area
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage	19.38%
Daly Waters Energy, LP (“DWE”) \| Beetaloo Basin, Pilot Area
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage	47.50%
Falcon \| Beetaloo Basin
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage	22.50%																	22.50%
Falcon \| Beetaloo Basin, SS2 Well Pad \| Maximum
Variable Interest Entity [Line Items]
Equity, ownership percentage																	5.00%
Falcon \| Beetaloo Basin, Phase 2 Development Area
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage	22.50%
Falcon \| Beetaloo Basin, Pilot Area
Variable Interest Entity [Line Items]
Equity, ownership percentage	5.00%
Beetaloo Basin
Variable Interest Entity [Line Items]
Net prospective, development-ready acres retained (in acres) \| acre ft	1,900,000
Beetaloo Basin \| Tamboran (B1) Pty Ltd ("TB1")
Variable Interest Entity [Line Items]
Subsidiary, ownership percentage																		77.50%
Beetaloo Basin, SS2 Well Pad \| Tamboran B2 Pty Ltd \| Minimum
Variable Interest Entity [Line Items]
Subsidiary, ownership percentage																95.00%
Beetaloo Basin, Phase 2 Development Area
Variable Interest Entity [Line Items]
Subsidiary, ownership percentage	58.12%
Phase two development area, gross acres reserved (in acres) \| acre ft	406,693
Beetaloo Basin, Phase 2 Development Area \| Tamboran Resources Corporation
Variable Interest Entity [Line Items]
Phase two development area, gross acres reserved (in acres) \| acre ft	236,370
Beetaloo Basin, Ex-EP 76, 98 and 117
Variable Interest Entity [Line Items]
Subsidiary, ownership percentage	77.50%
Daly Waters Energy, LP (“DWE”)
Variable Interest Entity [Line Items]
Asset sale agreement, acres of non-operating and non-controlling interest \| acre ft	100,000
Asset sale agreement, consideration transferred	$ 15,000,000
Asset sale agreement, consideration transferred per acre (in USD per acre) \| $ / a	150
Tamboran (West) Pty Ltd (“TR West”) \| Daly Waters Energy, LP (“DWE”)
Variable Interest Entity [Line Items]
Non-operating and non-controlling interest in post-checkerboard acreage position, number of areas \| area	2
Asset acquisition, consideration transferred	$ 15,000,000
Variable interest entity, primary beneficiary \| Tamboran (B1) Pty Ltd ("TB1")
Variable Interest Entity [Line Items]
Joint venture, ownership percentage			50.00%
Variable interest entity, primary beneficiary \| Beetaloo Basin
Variable Interest Entity [Line Items]
Subsidiary, ownership percentage																		38.75%
Variable interest entity, primary beneficiary \| Beetaloo Basin, Pilot Area
Variable Interest Entity [Line Items]
Subsidiary, ownership percentage	47.50%
Variable interest entity, primary beneficiary \| Daly Waters Energy, LP (“DWE”) \| Tamboran (B1) Pty Ltd ("TB1")
Variable Interest Entity [Line Items]
Joint venture, ownership percentage		50.00%
Commitments and contingencies (Note 12)					$ 7,500,000								$ 7,500,000
Issuance of stock and warrants for services or claims												$ 15,000,000
Variable interest entity, primary beneficiary \| Daly Waters Infrastructure, LP (“DWI”) \| Tamboran SPCF Pty Ltd (“TR SPCF")
Variable Interest Entity [Line Items]
Joint venture, ownership percentage						50.00%