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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 |  | $ 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 |  |  |  |  |  | 880.3 |  |  | 2.6 | 880.3
Dividends/distributions declared and paid |  |  |  |  |  | (463.8) |  |  | (0.9) |
Used for corporate purposes |  |  | 0.4 |  |  |  |  |  |  |
Other activity, including dividend, interest and foreign currency transaction effect |  |  |  | (8.4) |  |  |  |  |  |
Other activity of the period |  | 9.4 |  |  |  | 0.1 |  |  |  |
Balance at end of period at Jun. 30, 2018 | $ 8.8 | 3,382.7 | (2,768.3) | (240.8) | $ (3,009.1) | 6,142.8 |  | 6,525.7 | 43.4 | 6,569.1
Balance at beginning of period at Mar. 31, 2018 |  | 3,380.1 | (2,768.7) | (238.9) |  | 5,965.0 | 0.5 | 6,346.8 | 42.6 | 6,389.4
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |
Net earnings |  |  |  |  |  | 409.6 |  |  | 1.5 | 409.6
Dividends/distributions declared and paid |  |  |  |  |  | (231.9) |  |  | (0.7) |
Used for corporate purposes |  |  | 0.4 |  |  |  |  |  |  |
Other activity, including dividend, interest and foreign currency transaction effect |  |  |  | (1.9) |  |  |  |  |  |
Other activity of the period |  | 2.6 |  |  |  | 0.1 |  |  |  |
Balance at end of period at Jun. 30, 2018 | 8.8 | 3,382.7 | (2,768.3) | (240.8) | (3,009.1) | 6,142.8 |  | 6,525.7 | 43.4 | 6,569.1
Balance at beginning of period at Dec. 31, 2018 |  | 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 |  |  |  |  |  | 790.6 |  |  | 3.0 | 790.6
Dividends/distributions declared and paid |  |  |  |  |  | (618.5) |  |  | (0.1) |
SCC shareholder derivative lawsuit - received from AMC |  |  |  |  |  | 36.5 |  |  |  | (36.5)
SCC shareholder derivative lawsuit - dividend paid |  |  |  |  |  | (36.5) |  |  |  | 36.5
Used for corporate purposes |  |  | 0.4 |  |  |  |  |  |  |
Other activity, including dividend, interest and foreign currency transaction effect |  |  |  | (13.2) |  |  |  |  |  |
Other activity of the period |  | 13.9 |  |  |  | (0.3) |  |  |  |
Balance at end of period at Jun. 30, 2019 | 8.8 | 3,407.6 | (2,767.9) | (264.5) | (3,032.4) | 6,358.7 |  | 6,740.3 | 48.3 | 6,788.6
Balance at beginning of period at Mar. 31, 2019 |  | 3,400.4 | (2,768.3) | (257.7) |  | 6,265.7 | $ (2.4) | 6,646.5 | 46.3 | 6,692.8
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |
Net earnings |  |  |  |  |  | 402.4 |  |  | 2.0 | 402.4
Dividends/distributions declared and paid |  |  |  |  |  | (309.3) |  |  |  |
Used for corporate purposes |  |  | 0.4 |  |  |  |  |  |  |
Other activity, including dividend, interest and foreign currency transaction effect |  |  |  | (6.8) |  |  |  |  |  |
Other activity of the period |  | 7.2 |  |  |  | (0.1) |  |  |  |
Balance at end of period at Jun. 30, 2019 | $ 8.8 | $ 3,407.6 | $ (2,767.9) | $ (264.5) | $ (3,032.4) | $ 6,358.7 |  | $ 6,740.3 | $ 48.3 | $ 6,788.6

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