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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 period at Dec. 31, 2017 | $ 8.8 | $ 3,373.3 | $ (2,768.7) | $ (232.4) |  | $ 5,726.2 | $ 0.5 | $ 6,107.7 | $ 41.7 | $ 6,149.4
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |
Net earnings |  |  |  |  |  | 470.7 |  |  | 1.2 | 470.7
Dividends/distributions declared and paid |  |  |  |  |  | (231.9) |  |  | (0.3) |
Other activity, including dividend, interest and foreign currency transaction effect |  |  |  | (6.5) |  |  |  |  |  |
Other activity of the period |  | 6.8 |  |  |  |  |  |  |  |
Balance at end of period at Mar. 31, 2018 | 8.8 | 3,380.1 | (2,768.7) | (238.9) | $ (3,007.6) | 5,965.0 | 0.5 | 6,346.8 | 42.6 | 6,389.4
Balance at beginning of period at Dec. 31, 2018 | 8.8 | 3,393.7 | (2,768.3) | (251.3) |  | 6,186.9 | (2.4) | 6,567.4 | 45.4 | 6,612.8
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |
Net earnings |  |  |  |  |  | 388.2 |  |  | 1.0 | 388.2
Dividends/distributions declared and paid |  |  |  |  |  | (309.2) |  |  | (0.1) |
SCC shareholder derivative lawsuit - received from AMC |  |  |  |  |  | 36.5 |  |  |  | (36.5)
SCC shareholder derivative lawsuit - dividend paid |  |  |  |  |  | (36.5) |  |  |  | 36.5
Other activity, including dividend, interest and foreign currency transaction effect |  |  |  | (6.4) |  |  |  |  |  |
Other activity of the period |  | 6.7 |  |  |  | (0.2) |  |  |  |
Balance at end of period at Mar. 31, 2019 | $ 8.8 | $ 3,400.4 | $ (2,768.3) | $ (257.7) | $ (3,026.0) | $ 6,265.7 | $ (2.4) | $ 6,646.5 | $ 46.3 | $ 6,692.8

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