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26. POST-EMPLOYMENT OBLIGATIONS (Details 9) - BRL (R$) R$ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Disclosure of fair value of plan assets [line items] |  |
Assets of the pension plan | R$ 925 | R$ 1,077
Non Convertible Debentures Issued By The Company [Member] |  |
Disclosure of fair value of plan assets [line items] |  |
Assets of the pension plan | 398 | 380
Shares Issued By The Company [Member] |  |
Disclosure of fair value of plan assets [line items] |  |
Assets of the pension plan | 24 | 35
Real Estate Properties Of The Foundation Occupied By The Company [Member] |  |
Disclosure of fair value of plan assets [line items] |  |
Assets of the pension plan | R$ 503 | R$ 662

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