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21. LEASING TRANSACTIONS (Details) - BRL (R$) R$ in Millions | Jan. 02, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Disclosure of fair value measurement of assets [line items] |  |  |
Right-of-use assets | R$ 342 | R$ 277 |
Real Estate Property [Member] |  |  |
Disclosure of fair value measurement of assets [line items] |  |  |
Right-of-use assets | 238 | 206 | 238
Vehicles [Member] |  |  |
Disclosure of fair value measurement of assets [line items] |  |  |
Right-of-use assets | R$ 104 | R$ 71 | R$ 104

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- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 53 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_53_j&doctype=Standard -URIDate 2019-03-27 + Details
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