The proportion of ownership of voting rights in a subsidiary attributable to the entity.

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

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The increase (decrease) in the number of shares outstanding. [Refer: Number of shares outstanding]

+ References

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The increase (decrease) in the entity's equity resulting from the change in the equity of subsidiaries. [Refer: Subsidiaries [member]]

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- Definition

The increase in equity through the issue of equity instruments.

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- Definition

The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Subsidiaries [member]]

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Equity - Non-Controlling Interest (Details) - BRL (R$) R$ in Thousands			4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2021	Jun. 24, 2021	May 06, 2021	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share capital
Total value of shares offering and issued						R$ 1,181,351	R$ 1,250,235
Value recognized in equity			R$ 33,998	R$ 5,488,170
Banco Inter S.A.
Share capital
Value recognized in equity		R$ 1,566,887
Overall equity interest (as a percent)					31.40%	0.00%
Non-controlling interests.
Share capital
Total value of shares offering and issued							268
Value recognized in equity			R$ 33,998	3,921,283
Non-controlling interests. \| Banco Inter S.A.
Share capital
Total value of shares offering and issued		5,488,170
Value recognized in equity		3,921,283
Equity attributable to owners of parent [member]
Share capital
Total value of shares offering and issued						R$ 1,181,351	R$ 1,249,967
Value recognized in equity				R$ 1,566,887
Equity attributable to owners of parent [member] \| Banco Inter S.A.
Share capital
Value recognized in equity		R$ 5,488,170
Banco Inter S.A. \| Equity attributable to owners of parent [member]
Share capital
Overall equity interest (as a percent)	31.44%
Voting rights interest (as a percent)	53.30%			53.30%	53.30%
Common \| Non-controlling interests. \| Banco Inter S.A.
Share capital
Issuance of shares		143,017,604
Preferred \| Non-controlling interests. \| Banco Inter S.A.
Share capital
Issuance of shares		142,252,104