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12 FINANCIAL INSTRUMENTS (Details 2) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 BRL (R$) R$ / shares shares | Dec. 31, 2018 BRL (R$) R$ / shares shares
Disclosure of detailed information about financial instruments [line items] |  |
Closing Balance | R$ 2,161,920 | R$ 2,279,189
Fair Value Adjustment Recognized in profit or loss | R$ (118,780) |
USIM3 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Quantity (in shares) | shares | 107,156,651 | 107,156,651
Interest (%) | 15.19 | 15.19
Share price | R$ / shares | 9.87 | 11.44
Closing Balance | R$ 1,057,636 | R$ 1,225,872
Fair Value Adjustment Recognized in profit or loss | R$ (168,236) |
USIM5 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Quantity (in shares) | shares | 111,144,456 | 111,144,456
Interest (%) | 29.29 | 29.29
Share price | R$ / shares | 9.51 | 9.22
Closing Balance | R$ 1,056,984 | R$ 1,024,751
Fair Value Adjustment Recognized in profit or loss | 32,232 |
Total Shares [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Closing Balance | 2,114,620 | R$ 2,250,623
Fair Value Adjustment Recognized in profit or loss | R$ (136,004) |
PATI3 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Quantity (in shares) | shares | 2,065,529 | 1,997,642
Interest (%) | 11.31 | 11.33
Share price | R$ / shares | 22.90 | 14.30
Closing Balance | R$ 47,300 | R$ 28,566
Fair Value Adjustment Recognized in profit or loss | R$ 17,224 |

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