ACCOUNTS RECEIVABLE, NET - Power Supply (Details) - BRL (R$) R$ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
CUSTOMERS RECEIVABLE, NET
Definitive write-off	R$ 33,249	R$ 66,952
Total provisioned as allowance for the estimated credit loss	2,542,341	R$ 2,700,212	R$ 1,668,710	R$ 2,635,209
Amazonas Energia
CUSTOMERS RECEIVABLE, NET
Total provisioned as allowance for the estimated credit loss	R$ 929,640		R$ 886,257

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No definition available.

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- Definition

The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2023-01-01
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 16
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-URIDate 2021-03-24

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- Definition

The decrease in an allowance account for credit losses of financial assets resulting from the reversal of impairment. [Refer: Allowance account for credit losses of financial assets]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2023-01-01
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 16
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b
-URIDate 2021-03-24

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