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8 CRC Transferred to the Parana State Government (Tables)
 12 Months Ended
Dec. 31, 2019
CRC Transferred To Parana State Government [Abstract]  
Changes in CRC

8.1       Changes in CRC 

Balance as of   Monetary   Balance as of   Monetary   Balance as of
January 1, 2018 Interest variations Amortizations December 31, 2018 Interest variations Amortizations December 31, 2019
   1,516,362   93,009   95,788 (260,117)    1,445,042   87,710   96,519 (278,586)    1,350,685
Current          190,876          219,236
Noncurrent          1,254,166          1,131,449
Maturity of Noncurrent Installments

8.2       Maturity of noncurrent installments 

2021    233,817
2022    249,367
2023    265,951
2024    283,638
After 2024   98,676
     1,131,449