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Principles of Consolidation, Investments in Subsidiaries and Acquisition - Summary of identification of assets and liabilities, intangible assets, not recognized in acquired entity's book (Detail) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2017
Disclosure of detailed information about financial instruments [line items]
Intangible assets other than goodwill	R$ 2,369,355	R$ 2,238,042	R$ 1,891,636
Adjustments [member]
Disclosure of detailed information about financial instruments [line items]
Intangible assets other than goodwill	R$ 129,270
Commercial property rights [member]
Disclosure of detailed information about financial instruments [line items]
Finite Lived Intangible Asset, Estimated Useful Life	39 years
Commercial property rights [member] | Adjustments [member]
Disclosure of detailed information about financial instruments [line items]
Intangible assets other than goodwill	R$ 114,792
Portfolio and customers' relationship [member]
Disclosure of detailed information about financial instruments [line items]
Finite Lived Intangible Asset, Estimated Useful Life	39 years
Portfolio and customers' relationship [member] | Adjustments [member]
Disclosure of detailed information about financial instruments [line items]
Intangible assets other than goodwill	R$ 14,478

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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- Definition

The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2018-01-01
-Paragraph 118
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2018-03-01&anchor=para_118_e&doctype=Standard
-URIDate 2018-03-16

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 54
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_c&doctype=Standard
-URIDate 2018-03-16

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