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Trade Accounts Receivable (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | R$ (4,078,882) | R$ (3,866,429)
Current | 3,962,702 | 3,761,170
Non-current trade receivables | 116,180 | 105,259
Balance Falling Due |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (3,489,546) |
Overdue up to 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (448,510) |
Overdue for more than 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (140,826) |
Electricity Sales To Final Customers And Charges For Use Of The System Copel D I S [Member] |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (2,255,678) | (2,131,227)
Electricity Sales To Final Customers And Charges For Use Of The System Copel D I S [Member] | Balance Falling Due |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (1,719,504) |
Electricity Sales To Final Customers And Charges For Use Of The System Copel D I S [Member] | Overdue up to 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (421,647) |
Electricity Sales To Final Customers And Charges For Use Of The System Copel D I S [Member] | Overdue for more than 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (114,527) |
Unbilled electricity sales to final customers and Charges for use of the system - Copel DIS [Member] |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (930,801) | (850,513)
Unbilled electricity sales to final customers and Charges for use of the system - Copel DIS [Member] | Balance Falling Due |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (930,801) |
Electricity Sales To Final Customers [Member] |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (177,516) | (217,801)
Electricity Sales To Final Customers [Member] | Balance Falling Due |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (171,035) |
Electricity Sales To Final Customers [Member] | Overdue up to 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (1,995) |
Electricity Sales To Final Customers [Member] | Overdue for more than 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (4,486) |
Other Consumers Receivables [Member] |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (187,204) | (202,315)
Other Consumers Receivables [Member] | Balance Falling Due |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (93,041) |
Other Consumers Receivables [Member] | Overdue up to 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (34,614) |
Other Consumers Receivables [Member] | Overdue for more than 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (59,549) |
Energy Supply Concessionaires And Permission Holder And Trading Companies [Member] |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (415,674) | (471,087)
Energy Supply Concessionaires And Permission Holder And Trading Companies [Member] | Balance Falling Due |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (387,163) |
Energy Supply Concessionaires And Permission Holder And Trading Companies [Member] | Overdue up to 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (2,625) |
Energy Supply Concessionaires And Permission Holder And Trading Companies [Member] | Overdue for more than 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (25,886) |
C C E E [Member] |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (250,381) | (189,713)
C C E E [Member] | Balance Falling Due |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (130,716) |
C C E E [Member] | Overdue for more than 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (119,665) |
Charges For Use Of The Transmission System [Member] |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (102,342) | (86,155)
Charges For Use Of The Transmission System [Member] | Balance Falling Due |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (69,384) |
Charges For Use Of The Transmission System [Member] | Overdue up to 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (602) |
Charges For Use Of The Transmission System [Member] | Overdue for more than 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (32,356) |
Expected Credit Losses [Member] |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (240,714) | R$ (282,382)
Expected Credit Losses [Member] | Balance Falling Due |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (12,098) |
Expected Credit Losses [Member] | Overdue up to 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | (12,973) |
Expected Credit Losses [Member] | Overdue for more than 90 days |  |
Disclosure of information about activities subject to rate regulation [line items] |  |
Trade Accounts Receivable | R$ (215,643) |

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- Definition The amount of current trade receivables. [Refer: Trade receivables] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 68 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_68&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 78 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_b&doctype=Standard -URIDate 2024-03-27 + Details
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