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	Parent Company (Grupo Mexico) common shares	Total
Balance at Dec. 31, 2015	$ 8.8	$ 3,349.8	$ (2,697.6)	$ (211.3)		$ 4,812.1	$ 1.1	$ 5,262.9	$ 36.3		$ 5,299.2
Increase (Decrease) in Stockholders' Equity
Share repurchase program			(71.7)
Used for corporate purposes			0.3
Other activity, including dividend, interest and foreign currency transaction effect				(7.3)
Other comprehensive income (loss)							(3.5)				775.3
Net earnings						776.5			2.3		776.5
Dividends/distributions declared and paid						(139.3)
Other activity of the period		8.4				6.0
Balance at Dec. 31, 2016	8.8	3,358.2	(2,769.0)	(218.6)	$ (2,987.6)	5,455.3	(2.4)	5,832.3	38.6		5,870.9
Increase (Decrease) in Stockholders' Equity
Used for corporate purposes			0.3
Other activity, including dividend, interest and foreign currency transaction effect				(13.8)
Other comprehensive income (loss)							2.9				735.3
Net earnings						728.5			3.9		728.5
Dividends/distributions declared and paid						(456.1)			(0.8)
Other activity of the period		15.1				(1.5)
Balance at Dec. 31, 2017	$ 8.8	3,373.3	(2,768.7)	(232.4)	(3,001.1)	5,726.2	0.5	6,107.7	41.7		6,149.4
Increase (Decrease) in Stockholders' Equity
Share repurchase program										$ (2,900.0)
Used for corporate purposes			0.4
Other activity, including dividend, interest and foreign currency transaction effect				(18.9)
Other comprehensive income (loss)							(2.9)				1,545.3
Net earnings						1,543.0			5.2		1,543.0
Dividends/distributions declared and paid						(1,082.3)			(1.5)
Other activity of the period		20.4
Balance at Dec. 31, 2018		$ 3,393.7	$ (2,768.3)	$ (251.3)	$ (3,019.6)	$ 6,186.9	$ (2.4)	$ 6,567.4	$ 45.4		$ 6,612.8