v3.26.1
Promissory Notes (Details Narrative) - USD ($)
 3 Months Ended 6 Months Ended 9 Months Ended
Feb. 26, 2026
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Jun. 30, 2026
Apr. 28, 2025
Subsidiary, Sale of Stock [Line Items]              
Principal amount   $ 1,003,995   $ 1,003,995      
Balance of reverse       1,003,995      
Promissory note balance   $ 1,003,995   1,003,995      
Letter Agreement description On February 26, 2026, VisionWave Holdings Inc. (the “Company”) entered into a Letter Agreement (the “Letter Agreement”) with YA II PN, Ltd. (the “Investor”), pursuant to which the Investor agreed to provide the Company with a $20,000,000 senior loan (the “Loan”) on the terms and conditions set forth therein. The Loan is evidenced by a Promissory Note (the “YA II PN Note”) in the original principal amount of $20,000,000, bearing 0% interest per annum (increasing to 18% upon an Event of Default as defined therein). The Note was issued at an original issue discount of 15%, resulting in gross proceeds to the Company of $17,000,000 (prior to deduction of a $25,000 structuring and due diligence fee), or $16,975,000 net cash received.            
Amortization payments       $ 2,500,000      
Shares issued       233,678   1,333,333  
Exercise price per share   $ 18.00   $ 18.00     $ 0.001
Amortization of Debt Issuance Costs and Discounts       $ 10,411,665      
Legal Fees       25,000      
[custom:Warrants-0]   $ 6,986,665   6,986,665      
[custom:RepaidOnYaIiPnNote]   780,461          
Payments of Debt Issuance Costs   16,293 $ 0 1,727,334 $ 1,727,334    
Interest expense   2,192,375 2,334,917    
Loan payable   $ 10,000,000   10,000,000      
Adrian Note [Member]              
Subsidiary, Sale of Stock [Line Items]              
Interest expense       $ 279,452      
Warrant [Member]              
Subsidiary, Sale of Stock [Line Items]              
Exercise price per share   $ 9.00   $ 9.00