| Line Item | Jun 30, 2026 | Mar 31, 2026 | Sep 30, 2025 |
|---|---|---|---|
| General and administrative costs | — | ||
| Loss from operations | — | — | |
| Other income: | |||
| Interest earned on cash held in Trust Account | — | — | |
| Net income | |||
| Net income attributable to non-controlling interest | — | ||
| Net income attributable to Rice Acquisition Corporation 3 | — | ||
| Basic net income per ordinary share (in Dollars per share) | — | — | |
| Diluted net income per ordinary share (in Dollars per share) | — | — |