Transactions with Related Parties - Additional Information (Detail)	12 Months Ended
Dec. 31, 2019 BRL (R$)
Disclosure of transactions between related parties [line items]
Allowance for expected credit losses on related parties	R$ 0
Bottom of range [member]
Disclosure of transactions between related parties [line items]
Loans payable	three years
Top of range [member]
Disclosure of transactions between related parties [line items]
Loans payable	seven years

The amount of provisions for doubtful debts related to the amount of outstanding balances in related party transactions. [Refer: Provisions]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2019-01-01
-Paragraph 18
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2019-en-r&anchor=para_18_c&doctype=Standard
-URIDate 2019-03-27

Name:	ifrs-full_ProvisionsForDoubtfulDebtsRelatedToOutstandingBalancesOfRelatedPartyTransaction
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant