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Impairment and onerous contracts - Other assets (Details) R$ in Millions, $ in Millions	Dec. 31, 2021 USD ($)	Dec. 31, 2021 BRL (R$)	Dec. 31, 2019 USD ($)
Midwest system
Disclosure of financial assets [line items]
Onerous contracts provision	$ 18	R$ 100	$ 240

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- Definition

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.

+ References

No definition available.

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- Definition

The amount of provision for onerous contracts. An onerous contract is a contract in which the unavoidable costs of meeting the obligation under the contract exceed the economic benefits expected to be received under it. [Refer: Other provisions]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 37
-IssueDate 2021-01-01
-Paragraph 66
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&anchor=para_66&doctype=Standard
-URIDate 2021-03-24

+ Details

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- Details

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