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31 Net Operating Revenue (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of net operating revenue [line items]
Lease and rental revenue	R$ 144,744	R$ 132,682	R$ 109,230
Equipment and Framework [Member]
Disclosure of net operating revenue [line items]
Lease and rental revenue	143,482	131,409	106,790
Facilities Sharing [Member]
Disclosure of net operating revenue [line items]
Lease and rental revenue	1,046	1,003	2,159
Real Estate [Member]
Disclosure of net operating revenue [line items]
Lease and rental revenue	R$ 216	R$ 270	R$ 281

X

- Definition

Net Operating Revenue [Line Items]

+ References

No definition available.

+ Details

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X

- Definition

The amount of income recognised from rental activities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2019-03-27

+ Details

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- Details

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- Details

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X

- Details

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