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Insurance Contracts and Private Pension - Summary of Deferred Acquisition Costs (Detail) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure of reinsurance assets [Line Items] |  |
Beginning Balance | R$ 253 | R$ 429
Increase | 1,001 | 772
Amortization | (845) | (948)
Ending Balance | 409 | 253
Up to one year [Member] |  |
Disclosure of reinsurance assets [Line Items] |  |
Beginning Balance | 209 |
Ending Balance | 334 | 209
Non-current [Member] |  |
Disclosure of reinsurance assets [Line Items] |  |
Beginning Balance | 44 |
Ending Balance | R$ 75 | R$ 44

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- Definition The amount of amortisation of deferred losses (gains) arising from the purchase of reinsurance. [Refer: Depreciation and amortisation expense; Gains (losses) recognised in profit or loss on buying reinsurance] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 4 -IssueDate 2017-01-01 -Paragraph 37 -Subparagraph b -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=4&date=2017-03-01&anchor=para_37_b_ii&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The increase (decrease) in reinsurance assets. [Refer: Reinsurance assets] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 4 -IssueDate 2017-01-01 -Paragraph IG37 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=4&date=2017-03-01&anchor=para_IG37&doctype=Implementation%20Guidance -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 4 -IssueDate 2017-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=4&date=2017-03-01&anchor=para_37_e&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of a cedant’s net contractual rights under a reinsurance contract. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 4 -IssueDate 2017-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=4&date=2017-03-01&anchor=para_37_e&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition Disclosure of reinsurance assets. + References No definition available. + Details
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- Details
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- Details
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