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8. RECEIVABLES FROM CUSTOMERS, TRADERS AND POWER TRANSPORT CONCESSION HOLDERS (Details) - BRL (R$) R$ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Disclosure of trade and other receivables [line items] |  |  |
Billed supply | R$ 3,125 | R$ 3,130 |
Unbilled supply | 1,145 | 1,204 |
Other concession holders - wholesale supply | 50 | 47 |
Other concession holders - wholesale supply, unbilled | 260 | 204 |
CCEE (Power Trading Chamber) | 210 | 386 |
Concession Holders - power transport | 161 | 187 |
Concession Holders - power transport, unbilled | 295 | 253 |
Provision for doubtful receivables | (712) | (810) |
Trade and other receivables | 4,534 | 4,601 |
Current assets | 4,373 | 4,524 | [1]
Non-current assets | 161 | R$ 77 | [1]
Balances Not Yet Due [member] |  |  |
Disclosure of trade and other receivables [line items] |  |  |
Billed supply | 1,518 |  |
Unbilled supply | 1,145 |  |
Other concession holders - wholesale supply | 18 |  |
Other concession holders - wholesale supply, unbilled | 260 |  |
CCEE (Power Trading Chamber) | 21 |  |
Concession Holders - power transport | 45 |  |
Concession Holders - power transport, unbilled | 295 |  |
Provision for doubtful receivables | (278) |  |
Trade and other receivables | 3,024 |  |
Not Later Than Three Months [member] |  |  |
Disclosure of trade and other receivables [line items] |  |  |
Billed supply | 637 |  |
Unbilled supply |  |  |
Other concession holders - wholesale supply | 26 |  |
Other concession holders - wholesale supply, unbilled |  |  |
CCEE (Power Trading Chamber) | 189 |  |
Concession Holders - power transport | 14 |  |
Concession Holders - power transport, unbilled |  |  |
Provision for doubtful receivables | (12) |  |
Trade and other receivables | 854 |  |
3 months to 1 year [member] |  |  |
Disclosure of trade and other receivables [line items] |  |  |
Billed supply | 387 |  |
Unbilled supply |  |  |
Other concession holders - wholesale supply | 1 |  |
Other concession holders - wholesale supply, unbilled |  |  |
CCEE (Power Trading Chamber) |  |  |
Concession Holders - power transport | 17 |  |
Concession Holders - power transport, unbilled |  |  |
Provision for doubtful receivables | (15) |  |
Trade and other receivables | 390 |  |
More Than One Year [member] |  |  |
Disclosure of trade and other receivables [line items] |  |  |
Billed supply | 583 |  |
Unbilled supply |  |  |
Other concession holders - wholesale supply | 5 |  |
Other concession holders - wholesale supply, unbilled |  |  |
CCEE (Power Trading Chamber) |  |  |
Concession Holders - power transport | 85 |  |
Concession Holders - power transport, unbilled |  |  |
Provision for doubtful receivables | (407) |  |
Trade and other receivables | R$ 266 |  |
[1] | See note 2.8.

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