| Line Item | Jun 30, 2026 | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 |
|---|---|---|---|---|---|---|---|---|
| Operating expenses: | ||||||||
| General and administrative expenses | ||||||||
| Loss from operations | ||||||||
| Other income: | ||||||||
| Investment income on trust account | ||||||||
| Total other income | ||||||||
| Net income | ||||||||
| Basic income (loss) per share (in dollars per share) | — | — | — | — | ||||
| Diluted income (loss) per share (in dollars per share) | — | — | — | — |