v3.25.4

Cover	Feb. 17, 2026
Entity Addresses [Line Items]
Document Type	8-K
Amendment Flag	false
Document Period End Date	Feb. 17, 2026
Entity File Number	001-42972
Entity Registrant Name	Invest Green Acquisition Corporation
Entity Central Index Key	0002075068
Entity Tax Identification Number	00-0000000
Entity Incorporation, State or Country Code	E9
Entity Address, Address Line One	19215 SE 24th Street
Entity Address, Address Line Two	Suite # 106-159
Entity Address, City or Town	Camas
Entity Address, State or Province	WA
Entity Address, Postal Zip Code	98607
City Area Code	332
Local Phone Number	275-5814
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Entity Emerging Growth Company	true
Elected Not To Use the Extended Transition Period	false
Units, each consisting of one Class A ordinary share and one right
Entity Addresses [Line Items]
Title of 12(b) Security	Units, each consisting of one Class A ordinary share and one right
Trading Symbol	IGACU
Security Exchange Name	NASDAQ
Class A ordinary shares, par value $0.0001 per share
Entity Addresses [Line Items]
Title of 12(b) Security	Class A ordinary shares, par value $0.0001 per share
Trading Symbol	IGAC
Security Exchange Name	NASDAQ
Rights, each Right to acquire one-tenth (1/10) of one Class A Ordinary Share
Entity Addresses [Line Items]
Title of 12(b) Security	Rights, each Right to acquire one-tenth (1/10) of one Class A Ordinary Share
Trading Symbol	IGACW
Security Exchange Name	NASDAQ
Former Address [Member]
Entity Addresses [Line Items]
Entity Address, Address Line One	445 Park Avenue
Entity Address, Address Line Two	9th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10022

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Address Line 1 such as Attn, Building Name, Street Name

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Name of the state or province.

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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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A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

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Two-character EDGAR code representing the state or country of incorporation.

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The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Name of the Exchange on which a security is registered.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Trading symbol of an instrument as listed on an exchange.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Invest Green Acquisition Corp 8-K