| Cover | Feb. 06, 2025 |
| Document Information [Line Items] | |
| Document Type | 6-K |
| Registrant Name | INTER & Co, INC. |
| Entity File Number | 132-02847 |
| Entity Address, Address Line One | Av Barbacena, 1.219, 22nd Floor |
| Entity Address, City or Town | Belo Horizonte |
| Country of incorporation | Brazil |
| Entity Address, Postal Zip Code | 30 190-131 |
| Central Index Key | 0001864163 |
| Document Period End Date | Feb. 06, 2025 |
| Current Fiscal Year End Date | --12-31 |
| Amendment Flag | false |
