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Statement of Changes in Equity - ARS ($) $ in Millions | Share Capital [member] | Adjustment to Share Capital [member] | Treasury stock [member] | Adjustment to Treasury Stock [member] | Additional Paid-in Capital [member] | Cost Treasury Stock [member] | Legal Reserve [member] | Voluntary Reserve [member] | Other Reserve [member] | Other Comprehensive Loss [member] | Retained Earnings [member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2017 | $ 899 | $ 37,036 | $ 7 | $ 150 | $ 482 |  | $ 320 | $ 768 |  | $ (279) | $ 18,796 | $ 58,179
Change of accounting standard - Adjustment by model of expected losses IFRS 9 |  |  |  |  |  |  |  |  |  |  | (126) | (126)
Balance at December 31, 2017 restated | 899 | 37,036 | 7 | 150 | 482 |  | 320 | 768 |  | (279) | 18,670 | 58,053
Other reserve constitution - Share-bases compensation plan |  |  |  |  |  |  |  |  | $ 22 |  |  | 22
Payment of Other reserve constitution - Share-bases compensation plan |  | 2 |  | (2) | 22 |  |  |  | $ (22) |  |  |
Acquisition of own shares | (16) | (350) | 16 | 350 |  | $ (2,237) |  |  |  |  |  | (2,237)
Other comprehensive loss for the year |  |  |  |  |  |  |  |  |  | (8) |  | (8)
Profit for the year |  |  |  |  |  |  |  |  |  |  | 8,995 | 8,995
Ending balance at Dec. 31, 2018 | 883 | 36,688 | 23 | 498 | 504 | (2,237) | 320 | 768 |  | (287) | 27,665 | 64,825
Ordinary and Extraordinary Shareholders' Meeting held on April 24, 2019 |  |  |  |  |  |  | 1,435 | 26,230 |  |  | (27,665) |
Acquisition of own shares | (8) | (284) | 8 | 284 |  | (816) |  |  |  |  |  | (816)
Other comprehensive loss for the year |  |  |  |  |  |  |  |  |  | (7) |  | (7)
Profit for the year |  |  |  |  |  |  |  |  |  |  | 16,518 | 16,518
Ending balance at Dec. 31, 2019 | 875 | 36,404 | 31 | 782 | 504 | (3,053) | 1,755 | 26,998 |  | (294) | 16,518 | 80,520
Ordinary and Extraordinary Shareholders' Meeting held on April 24, 2019 |  |  |  |  |  |  | 826 | 15,692 |  |  | (16,518) |
Other reserve constitution - Share-bases compensation plan |  |  |  |  |  |  |  |  |  | 76 |  | 76
Profit for the year |  |  |  |  |  |  |  |  |  |  | (17,698) | (17,698)
Ending balance at Dec. 31, 2020 | $ 875 | $ 36,404 | $ 31 | $ 782 | $ 504 | $ (3,053) | $ 2,581 | $ 42,690 |  | $ (218) | $ (17,698) | $ 62,898

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