Equity - Dividends and Allocation of Net Income (Parenthetical) (Detail)	12 Months Ended
Dec. 31, 2019 R$ / shares
Shareholders equity details [abstract]
Legal reserve as percentage of net income	5.00%
Interim Dividends Paid Per Share	R$ 0.20
Dividends payable per share	R$ 0.24
Statutory reserve as percentage of net income	50.00%

Basic earnings (loss) per share from continuing operations. [Refer: Basic earnings (loss) per share; Continuing operations [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 33
-IssueDate 2019-01-01
-Paragraph 66
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2019-en-r&anchor=para_66&doctype=Standard
-URIDate 2019-03-27

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Namespace Prefix:	ifrs-full_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration