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Presentation of Financial Statements and Summary of Significant Accounting Policies- Summary of he Range Of Estimated Impacts On the Adoption Of the Ifrs 16 (Detail) - BRL (R$) R$ in Thousands | Jan. 01, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2017
--- | --- | --- | --- | ---
Current assets |  |  |  |
Prepaid expenses |  | R$ 187,570 | R$ 150,046 | R$ 123,883
Non-current assets |  |  |  |
Prepaid expenses |  | 399,095 | 346,886 | 222,518
Intangible assets |  | 2,369,355 | 2,238,042 | 1,891,636
Total assets |  | 30,499,395 | R$ 28,284,346 | R$ 24,074,516
IFRS 16 [member] | Increase (decrease) due to changes in accounting policy [member] |  |  |  |
Current assets |  |  |  |
Prepaid expenses | R$ (38,939) | (38,939) |  |
Non-current assets |  |  |  |
Prepaid expenses | (288,630) | (288,630) |  |
Right of use assets | 1,940,091 | 1,731,314 |  |
Intangible assets | (39,178) | (39,178) |  |
Total assets | 1,573,344 | 1,364,567 |  |
Current liabilities |  |  |  |
Lease contracts payable | 219,399 | 184,136 |  |
Non-current liabilities |  |  |  |
Lease contracts payable | 1,353,945 | 1,180,431 |  |
Total liabilities | R$ 1,573,344 | R$ 1,364,567 |  |

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