| Line Item | Jun 30, 2026 | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Sep 30, 2024 |
|---|---|---|---|---|---|---|---|
| Formation, general and administrative costs | — | ||||||
| Loss from operations | — | — | — | ||||
| Other income | |||||||
| Interest earned on marketable securities in Trust Account | — | — | — | ||||
| Net income (loss) | |||||||
| Basic net income (loss) per share | — | — | |||||
| Diluted net income (loss) per share | — | — |