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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($)
$ in Millions
CAPITAL STOCK:
ADDITIONAL PAID-IN CAPITAL:
TREASURY STOCK:
Southern Copper common shares
TREASURY STOCK:
Parent Company (Grupo Mexico) common shares
TREASURY STOCK:
RETAINED EARNINGS:
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS):
STOCKHOLDERS' EQUITY
NON-CONTROLLING INTEREST
Total
Balance at beginning of year at Dec. 31, 2019 $ 8.8 $ 3,424.9 $ (2,767.9) $ (281.0)   $ 6,435.6 $ (10.1) $ 6,810.3 $ 47.9 $ 6,858.2
Increase (Decrease) in Stockholders' Equity                    
Net earnings           474.3     2.8 474.3
Dividends declared and paid, common stock, per share, 2021- '$1.30, 2020- '$0.60           (463.8)     (2.6)  
Other activity, including dividend, interest and foreign currency transaction effect       7.4            
Other activity of the period   (6.7)                
Balance at end of year at Jun. 30, 2020   3,418.2 (2,767.9) (273.6) $ (3,041.5) 6,446.1 (10.1) 6,821.5 48.1 6,869.6
Balance at beginning of year at Mar. 31, 2020 8.8 3,410.5 (2,767.9) (266.3)   6,341.2   6,716.2 47.0 6,763.2
Increase (Decrease) in Stockholders' Equity                    
Net earnings           259.5     1.4 259.5
Dividends declared and paid, common stock, per share, 2021- '$1.30, 2020- '$0.60           (154.6)     (0.3)  
Other activity, including dividend, interest and foreign currency transaction effect       (7.3)            
Other activity of the period   7.7                
Balance at end of year at Jun. 30, 2020   3,418.2 (2,767.9) (273.6) (3,041.5) 6,446.1 (10.1) 6,821.5 48.1 6,869.6
Balance at beginning of year at Dec. 31, 2020 8.8 3,441.5 (2,767.5) (296.0)   6,846.4 (8.4) 7,224.8 51.2 7,276.0
Increase (Decrease) in Stockholders' Equity                    
Net earnings           1,696.6     7.0 1,696.6
Dividends declared and paid, common stock, per share, 2021- '$1.30, 2020- '$0.60           (1,005.0)     (2.9)  
Used for corporate purposes     0.1             0.1
Other activity, including dividend, interest and foreign currency transaction effect       (12.4)            
Other activity of the period   13.4                
Balance at end of year at Jun. 30, 2021   3,454.9 (2,767.4) (308.4) (3,075.8) 7,538.0 (8.4) 7,917.5 55.3 7,972.8
Balance at beginning of year at Mar. 31, 2021 $ 8.8 3,439.5 (2,767.5) (293.7)   7,146.4   7,525.1 53.2 7,578.3
Increase (Decrease) in Stockholders' Equity                    
Net earnings           932.7     3.7 932.7
Dividends declared and paid, common stock, per share, 2021- '$1.30, 2020- '$0.60           (541.1)     (1.6)  
Used for corporate purposes                   0.1
Other activity, including dividend, interest and foreign currency transaction effect       (14.7)            
Other activity of the period   15.4                
Balance at end of year at Jun. 30, 2021   $ 3,454.9 $ (2,767.4) $ (308.4) $ (3,075.8) $ 7,538.0 $ (8.4) $ 7,917.5 $ 55.3 $ 7,972.8