Fair Value Measurements - Summary of Fair Value Hierarchy of the Valuation Inputs the Company (Detail) - USD ($) |
Mar. 31, 2026 |
Sep. 30, 2025 |
May 22, 2025 |
|---|---|---|---|
| Fair Value Assets Measured On Basis Valuation Techniques [Line Items] | |||
| Cash and marketable securities held in trust account | $ 239,035,116 | $ 234,628,166 | $ 231,150,000 |
| Level 1 [Member] | |||
| Fair Value Assets Measured On Basis Valuation Techniques [Line Items] | |||
| Cash and marketable securities held in trust account | $ 239,035,116 | $ 234,628,166 |