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2 Concessions and Authorizations (Details 1) - BRL (R$) R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jan. 02, 2019
Disclosure of detailed information about service concession arrangements [line items] |  |  |  |
Accounts receivable related to the concession | R$ 1,902,340 | R$ 1,878,369 |  | R$ 1,796,865
Intangible assets | 6,929,456 | 6,332,611 |  |
Amortization | (372) | 372 |  |
Compagas balances [member] |  |  |  |
Disclosure of detailed information about service concession arrangements [line items] |  |  |  |
Accounts receivable related to the concession | 189,416 | 144,813 | R$ 148,720 |
Intangible assets | 102,627 | 127,598 | 152,538 |
Fair value of assets from the indemnity for the concession | 34,591 | 9,181 | 9,184 |
Amortization | (29,442) | (28,854) | (29,012) |
Adjustments [member] |  |  |  |
Disclosure of detailed information about service concession arrangements [line items] |  |  |  |
Accounts receivable related to the concession |  | 179,572 | 199,257 |
Intangible assets | 29,739 | (127,598) | (148,919) |
Fair value of assets from the indemnity for the concession | (22,437) | 1,234 | 3,009 |
Amortization | 199 | 400 | 6,253 |
Copel balances [member] |  |  |  |
Disclosure of detailed information about service concession arrangements [line items] |  |  |  |
Accounts receivable related to the concession | 189,416 | 324,385 | 347,977 |
Intangible assets | 132,366 |  | 3,619 |
Fair value of assets from the indemnity for the concession | 12,154 | 10,415 | 12,193 |
Amortization | R$ (29,243) | R$ (28,454) | R$ (22,759) |

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