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, 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						1,543.0			5.2	1,543.0
Dividends/distributions declared and paid						(1,082.3)			(1.5)
Used for corporate purposes			0.4
Other activity, including dividend, interest and foreign currency transaction effect				(18.9)
Other activity of the period		20.4
Other comprehensive income (loss)							(2.9)			(2.9)
Balance at end of year at Dec. 31, 2018	$ 8.8	3,393.7	(2,768.3)	(251.3)	$ (3,019.6)	6,186.9	(2.4)	6,567.4	45.4	6,612.8
Increase (Decrease) in Stockholders' Equity
Net earnings						1,485.8			6.1	1,485.8
Dividends/distributions declared and paid						(1,236.9)			(3.6)
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				(29.7)
Other activity of the period		31.2				(0.2)
Other comprehensive income (loss)							(7.7)			(7.7)
Balance at end of year at Dec. 31, 2019	8.8	3,424.9	(2,767.9)	(281.0)	(3,048.9)	6,435.6	(10.1)	6,810.3	47.9	6,858.2
Increase (Decrease) in Stockholders' Equity
Net earnings						1,570.4			7.4	1,570.4
Dividends/distributions declared and paid						(1,159.6)			(4.1)
Used for corporate purposes			0.4
Other activity, including dividend, interest and foreign currency transaction effect				(15.0)
Other activity of the period		16.6
Other comprehensive income (loss)							1.7			1.7
Balance at end of year at Dec. 31, 2020	$ 8.8	$ 3,441.5	$ (2,767.5)	$ (296.0)	$ (3,063.5)	$ 6,846.4	$ (8.4)	$ 7,224.8	$ 51.2	$ 7,276.0