v3.26.1

Summary of Significant Accounting Policies (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Summary of Significant Accounting Policies [Line Items]
Cash	$ 112,660	$ 483,572
Cash equivalents
Assets held in trust account	309,180,211	$ 296,736,638
Federal deposit Insurance Corporation coverage amount	$ 250,000
Founder Shares [Member] \| Sponsor [Member]
Summary of Significant Accounting Policies [Line Items]
Shares granted (in Shares)	75,000
Fair value of shares granted	$ 130,500
Price per unit (in Dollars per share)	$ 1.74

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of investment in marketable security, classified as noncurrent.

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Gross number of share options (or share units) granted during the period.

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Per share or per unit amount of equity securities issued.

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Value, after forfeiture, of shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

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GP-Act III Acquisition Corp. 10-K