v3.26.1

Cover	Apr. 29, 2026
Document Information [Line Items]
Document Type	6-K
Registrant Name	INTER & Co, INC.
Entity File Number	132-02847
Entity Address, Address Line One	Maples Corporate Services Limited, PO Box 309, Ugland House,
Entity Address, City or Town	Grand Cayman
Country of incorporation	Cayman Islands
Entity Address, Postal Zip Code	KY1-1104
Central Index Key	0001864163
Document Period End Date	Apr. 29, 2026
Current Fiscal Year End Date	--12-31
Amendment Flag	false

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

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End date of current fiscal year in the format --MM-DD.

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- Definition

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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- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

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- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

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No definition available.

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- Definition

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

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No definition available.

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- Definition

Name of the City or Town

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Code for the postal or zip code

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- Definition

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
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2

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- Definition

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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No definition available.

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- Definition

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
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2

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The country in which the entity is incorporated.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Inter & Co, Inc. 6-K