| Line Item | Jun 30, 2026 | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Jun 30, 2024 |
|---|---|---|---|---|---|---|---|---|
| Revenue | — | — | — | |||||
| Cost of Revenue | — | — | — | |||||
| Gross Profit | — | — | — | |||||
| % of revenue | 40.0% | — | — | — | ||||
| Operating expenses: | ||||||||
| General and Administrative Expense | — | — | ||||||
| Research and Development Expense | ||||||||
| Selling, General and Administrative Expense | ||||||||
| Depreciation Expense | — | |||||||
| Total operating expenses | ||||||||
| % of revenue | 6376.8% | — | — | — | ||||
| Loss from operations | ||||||||
| % of revenue | -6336.8% | — | — | — | ||||
| Other (expense) income: | ||||||||
| Total Interest Income | — | |||||||
| Interest expense | — | |||||||
| Non-Operating Income (Expense) | — | — | — | |||||
| Loss on disposal of investments | — | — | — | |||||
| Change in fair value of convertible notes payable | — | |||||||
| Change in fair value of other liabilities | — | — | ||||||
| Change in fair value of other investments | — | — | — | |||||
| Other Income | — | |||||||
| Total other (expense) income, net | ||||||||
| Loss before provision for income taxes | ||||||||
| Net loss | ||||||||
| % of revenue | -9055.9% | — | — | — | ||||
| Net Income Attributable to Noncontrolling Interest | — | — | — | |||||
| Net Loss Attributable to VisionWave Holdings Inc. Shareholders | — | — | — | |||||
| Comprehensive Loss Attributable to Non-controlling interest | — | — | — | |||||
| Comprehensive Loss Attributable to VisionWave Holdings Inc. Shareholders | — | — | — | |||||
| Earnings Per Share (Basic) | — | — | ||||||
| Earnings Per Share (Diluted) | — | — |