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Note 34 - Dividends (Tables)
 12 Months Ended
Dec. 31, 2020
Statement Line Items [Line Items]  
Disclosure of dividends paid [text block]
      2020       2019       2018  
                         
Dividends declared to owners of the Company (excluding NCI)    
3,887
      
2,969
      
2,908
  
Declaration date
cents per share
January 10, 2019
6.875
April 11, 2019
6.875
July 11, 2019
6.875
October 1
0
, 2019
6.875
January
16
, 2020
7.5
May 14, 2020
7.5
July
16
, 2020
8.5
October
15
, 2020
10.0