Variable Interest Entities - Balance sheet (Details) - USD ($)	Mar. 31, 2025	Jun. 30, 2024
Current assets
Cash and cash equivalents	$ 25,635,594	$ 74,745,897
Trade and other receivables:
Joint interest billing	7,584,436	10,298,322
ATO receivable	1,748,822	700,115
Prepaid expenses and other current assets	2,939,173	3,209,033
Total current assets	37,947,197	97,330,881
Finance lease right-of-use assets	18,864,368	20,697,452
Prepaid expenses and other non-current assets	2,850,359	1,889,890
Total non-current assets	343,575,757	261,313,150
TOTAL ASSETS	381,522,954	358,644,031
Current liabilities
Accounts payable and accrued expenses	20,372,870	14,832,599
Current portion of finance lease obligations	13,760,869	12,767,400
Total current liabilities	34,376,797	27,997,998
Finance lease obligations	12,358,826	14,141,713
Asset retirement obligations	8,867,948	8,140,992
Total non-current liabilities	21,811,453	22,960,333
Total liabilities	56,188,250	50,958,331
Unproved properties
Trade and other receivables:
Natural gas properties, successful efforts method	303,320,471	230,119,448
Assets under construction - natural gas equipment
Trade and other receivables:
Natural gas properties, successful efforts method	17,567,615	7,542,064
Variable interest entity, primary beneficiary | Tamboran (B1) Pty Ltd ("TB1")
Current assets
Cash and cash equivalents	4,320,006	1,488,541
Trade and other receivables:
Joint interest billing	6,663,104	10,298,322
Intercompany receivable	7,013,250	7,415,684
ATO receivable	1,655,580	615,480
Other receivable	2,476	0
Prepaid expenses and other current assets	1,098,677	1,476,094
Total current assets	20,753,093	21,294,121
Finance lease right-of-use assets	18,864,368	20,697,452
Prepaid expenses and other non-current assets	1,083,397	385,215
Total non-current assets	269,938,338	196,622,792
TOTAL ASSETS	290,691,431	217,916,913
Current liabilities
Accounts payable and accrued expenses	13,973,933	10,569,865
Current portion of finance lease obligations	13,760,869	12,767,400
Total current liabilities	27,734,802	23,337,265
Finance lease obligations	12,358,826	14,141,713
Asset retirement obligations	4,691,138	4,174,178
Loan from Group	149,346,360	113,096,572
Total non-current liabilities	166,396,324	131,412,463
Total liabilities	194,131,126	154,749,728
Variable interest entity, primary beneficiary | Sturt Plateau Compression Facility ("SPCF")
Current assets
Cash and cash equivalents	759,398
Trade and other receivables:
Joint interest billing	921,332
ATO receivable	163,178
Other receivable	1,250
Total current assets	1,845,158
Total non-current assets	17,567,615
TOTAL ASSETS	19,412,773
Current liabilities
Accounts payable and accrued expenses	2,780,602
Total current liabilities	2,780,602
Asset retirement obligations	88,262
Loan from Group	1,623,190
Total non-current liabilities	1,711,452
Total liabilities	4,492,054
Variable interest entity, primary beneficiary | Unproved properties | Tamboran (B1) Pty Ltd ("TB1")
Trade and other receivables:
Natural gas properties, successful efforts method	249,990,573	167,998,061
Variable interest entity, primary beneficiary | Assets under construction - natural gas equipment | Tamboran (B1) Pty Ltd ("TB1")
Trade and other receivables:
Natural gas properties, successful efforts method	0	$ 7,542,064
Variable interest entity, primary beneficiary | Assets under construction - natural gas equipment | Sturt Plateau Compression Facility ("SPCF")
Trade and other receivables:
Natural gas properties, successful efforts method	$ 17,567,615