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Note 2 - Basis of Preparation - Effect of Transition of BCRA GAAP to IFRS-IASB in Other Comprehensive Income Loss (Details) - ARS ($) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Effect of Transition of BCRA GAAP to IFRS-IASB Abstract |  |
Loss for the Year from Financial Instruments at Fair Value Through OCI |  | $ (124,762,000)
Related Tax Adjusted in OCI |  | 39,567,000
Loss for the Year for the Share in OCI from Associates at Equity Method |  | (2,232,000)
Subtotal Adjusted in Other Comprehensive Income/(Loss) in Accordance with IFRS-IASB |  | (87,427,000)
Other Comprehensive Income/(Loss) Inflation Adjustment |  | (55,205,000)
TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX | $ (27,747,000) | (142,632,000)
Total Comprehensive Income | (1,597,450,000) | 1,716,879,000
COMPREHENSIVE INCOME ATTRIBUTABLE TO OWNERS OF THE BANK | (1,517,479,000) | 1,761,188,000
COMPREHENSIVE INCOME ATTRIBUTABLE TO NON-CONTROLLING INTERESTS | $ (79,971,000) | $ (44,309,000)

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