Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) - USD ($)	3 Months Ended	4 Months Ended
Sep. 30, 2025	Sep. 30, 2025
Segment Reporting, Asset Reconciling Item [Line Items]
Formation, general, and administrative costs	$ 37,363	$ 49,800

Total costs of sales and operating expenses for the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Name:	us-gaap_CostsAndExpenses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration