SEGMENT AND RELATED INFORMATION: (Tables)

12 Months Ended

Dec. 31, 2020

SEGMENT AND RELATED INFORMATION:

Schedule of financial information relating to Company's segments

	Year Ended December 31, 2020
	(in millions)
			Mexican				Corporate, other
	Mexican		IMMSA		Peruvian		and
	Open-pit		Unit		Operations		eliminations		Consolidated
Net sales outside of segments	$	4,412.4	$	418.9	$	3,153.6	$	—	$	7,984.9
Intersegment sales				111.0				(111.0)		—
Cost of sales (exclusive of depreciation, amortization and depletion)		1,991.6		383.0		1,679.5		(124.3)		3,929.8
Selling, general and administrative		70.5		9.5		37.6		8.6		126.2
Depreciation, amortization and depletion		366.7		42.5		328.7		37.7		775.6
Exploration		2.5		8.6		9.4		12.1		32.6
Operating income	$	1,981.1	$	86.3	$	1,098.4	$	(45.1)		3,120.7
Less:
Interest, net										(347.4)
Other income (expense)										(27.5)
Income taxes										(1,174.4)
Equity earnings of affiliate										6.4
Non-controlling interest										(7.4)
Net income attributable to SCC									$	1,570.4
Capital investment	$	317.1	$	72.1	$	195.0	$	8.0	$	592.2
Property and mine development, net	$	4,470.5	$	548.2	$	3,735.1	$	704.9	$	9,458.7
Total assets	$	7,236.1	$	967.2	$	5,169.9	$	3,573.3	$	16,946.5

	Year Ended December 31, 2019
	(in millions)
			Mexican				Corporate, other
	Mexican		IMMSA		Peruvian		and
	Open-pit		Unit		Operations		eliminations		Consolidated
Net sales outside of segments	$	3,963.9	$	381.6	$	2,940.1	$	—	$	7,285.6
Intersegment sales		—		83.2		—		(83.2)		—
Cost of sales (exclusive of depreciation, amortization and depletion)		1,613.1		380.3		1,702.1		(89.1)		3,606.4
Selling, general and administrative		78.6		7.9		38.5		6.8		131.8
Depreciation, amortization and depletion		351.9		52.3		328.1		32.1		764.4
Exploration		1.8		9.0		16.5		2.7		30.0
Operating income	$	1,918.5	$	15.3	$	854.9	$	(35.7)		2,753.0
Less:
Interest, net										(319.5)
Other income (expense)										(7.0)
Income taxes										(945.3)
Equity earnings of affiliate										10.7
Non-controlling interest										(6.1)
Net income attributable to SCC									$	1,485.8
Capital investment	$	244.3	$	106.3	$	350.1	$	6.8	$	707.5
Property and mine development, net	$	4,648.5	$	497.1	$	3,879.2	$	346.2	$	9,371.0
Total assets	$	8,081.9	$	837.6	$	5,017.9	$	2,470.0	$	16,407.4

	Year Ended December 31, 2018
	(in millions)
			Mexican				Corporate, other
	Mexican		IMMSA		Peruvian		and
	Open-pit		Unit		Operations		eliminations		Consolidated
Net sales outside of segments	$	4,075.9	$	448.6	$	2,572.2	$	—	$	7,096.7
Intersegment sales		—		79.3		—		(79.3)		—
Cost of sales (exclusive of depreciation, amortization and depletion)		1,611.0		377.2		1,509.4		(88.6)		3,409.0
Selling, general and administrative		55.3		8.5		36.7		2.1		102.6
Depreciation, amortization and depletion		360.4		47.6		237.4		28.9		674.3
Exploration		2.0		5.3		18.5		3.8		29.6
Operating income	$	2,047.2	$	89.3	$	770.2	$	(25.5)		2,881.2
Less:
Interest, net										(261.1)
Other income (expense)										(30.7)
Income taxes										(1,053.5)
Equity earnings of affiliate										12.3
Non-controlling interest										(5.2)
Net income attributable to SCC									$	1,543.0
Capital investment	$	266.8	$	60.0	$	774.0	$	20.6	$	1,121.4
Property and mine development, net	$	4,783.8	$	448.3	$	3,797.2	$	374.5	$	9,403.8
Total assets	$	8,165.2	$	930.2	$	4,813.1	$	379.1	$	14,287.6

Schedule of opening and closing balances of receivables by reporting segment

The following table presents information regarding the opening and closing balances of receivables by reporting segment of the Company for the three years ended December 31, 2020 (in millions):

			Mexican
	Mexican		IMMSA		Peruvian		Corporate &
	Open-Pit		Unit		Operations		Elimination		Consolidated
As of December 31, 2020:
Trade receivables	$	566.0	$	57.8	$	445.1	$	—	$	1,068.9
Related parties, current		15.4		—		0.8		7.1		23.3
As of December 31, 2019:
Trade receivables	$	477.8	$	38.0	$	317.1	$	—	$	832.9
Related parties, current		22.1		—		—		7.9		30.0
Related parties, non-current		59.5		—		—		—		59.5
As of December 31, 2018:
Trade receivables	$	505.9	$	50.5	$	266.0	$	—	$	822.4
Related parties		81.6		—		—		19.9		101.5

Schedule of sales value per segment

The following table presents information regarding the sales value by reporting segment of the Company’s significant products for the three years ended December 31, 2020 (in millions):

	Year Ended December 31, 2020
			Mexican
	Mexican		IMMSA		Peruvian		Corporate, Other &		Total
	Open-pit		Unit		Operations		Eliminations		Consolidated
Copper	$	3,762.1	$	72.1	$	2,727.3	$	(48.4)	$	6,513.1
Molybdenum		275.2		—		235.1		—		510.3
Zinc		—		247.8		—		1.6		249.4
Silver		235.5		155.8		112.0		(55.5)		447.8
Other		139.6		54.2		79.2		(8.7)		264.3
Total	$	4,412.4	$	529.9	$	3,153.6	$	(111.0)	$	7,984.9

	Year Ended December 31, 2019
			Mexican
	Mexican		IMMSA		Peruvian		Corporate, Other &		Total
	Open-pit		Unit		Operations		Eliminations		Consolidated
Copper	$	3,314.9	$	42.0	$	2,535.3	$	(46.9)	$	5,845.3
Molybdenum		341.0		—		208.4		—		549.4
Zinc		—		280.1		—		(2.3)		277.8
Silver		185.9		82.7		85.6		(29.9)		324.3
Other		122.1		60.0		110.8		(4.1)		288.8
Total	$	3,963.9	$	464.8	$	2,940.1	$	(83.2)	$	7,285.6

	Year Ended December 31, 2018
			Mexican
	Mexican		IMMSA		Peruvian		Corporate, Other &		Total
(in millions)	Open-pit		Unit		Operations		Eliminations		Consolidated
Copper	$	3,459.1	$	45.6	$	2,251.2	$	(48.1)	$	5,707.8
Molybdenum		342.5		—		167.4		—		509.9
Zinc		—		328.7		—		(0.1)		328.6
Silver		175.3		83.5		69.5		(28.1)		300.2
Other		99.0		70.1		84.1		(3.0)		250.2
Total	$	4,075.9	$	527.9	$	2,572.2	$	(79.3)	$	7,096.7

Schedule of net sales by countries

The geographic breakdown of the Company’s sales for the three years ended December 31, 2020 was as follows (in millions):

	Year Ended December 31, 2020
			Mexican
	Mexican		IMMSA		Peruvian		Corporate &
	Open-Pit		Unit		Operations		Elimination		Consolidated
The Americas:
Mexico	$	1,296.6	$	341.1	$	—	$	(111.0)	$	1,526.7
United States		1,182.8		27.2		153.4		—		1,363.4
Peru		—		13.0		322.0		—		335.0
Brazil		—		18.7		214.3		—		233.0
Chile		18.8		—		202.3		—		221.1
Other American countries		36.8		2.9		2.7		—		42.4
Europe:
Switzerland		898.2		69.9		475.2		—		1,443.3
Italy		0.1		9.5		262.0		—		271.6
Spain		199.4		—		—		—		199.4
Other European countries		199.9		40.2		281.6		—		521.7
Asia:
Singapore		319.9		6.9		536.9		—		863.7
Japan		46.9		—		532.6		—		579.5
Other Asian countries		213.0		0.5		170.6				384.1
Total	$	4,412.4	$	529.9	$	3,153.6	$	(111.0)	$	7,984.9

	Year Ended December 31, 2019
			Mexican
	Mexican		IMMSA		Peruvian		Corporate &
	Open-Pit		Unit		Operations		Elimination		Consolidated
The Americas:
Mexico	$	1,262.2	$	352.9	$	—	$	(83.2)	$	1,531.9
United States		1,054.9		6.2		134.5		—		1,195.6
Peru		1.6		—		338.4		—		340.0
Brazil		—		17.3		194.4		—		211.7
Chile		1.2		—		190.1		—		191.3
Other American countries		37.6		2.2		3.3		—		43.1
Europe:
Switzerland		780.9		36.7		355.8		—		1,173.4
Italy		45.1		13.3		238.6		—		297.0
Spain		186.1		—		—		—		186.1
Other European countries		92.8		24.9		256.9		—		374.6
Asia:
Singapore		345.4		10.4		611.1		—		966.9
Japan		59.9		—		440.9		—		500.8
Other Asian countries		96.2		0.9		176.1		—		273.2
Total	$	3,963.9	$	464.8	$	2,940.1	$	(83.2)	$	7,285.6

	Year Ended December 31, 2018
			Mexican
	Mexican		IMMSA		Peruvian		Corporate &
	Open-Pit		Unit		Operations		Elimination		Consolidated
The Americas:
Mexico	$	1,343.0	$	385.6	$	—	$	(79.3)	$	1,649.3
United States		1,008.0		6.6		244.0		—		1,258.6
Peru		—		—		390.4		—		390.4
Brazil		—		43.8		228.1		—		271.9
Chile		—		—		136.3		—		136.3
Other American countries		60.6		3.8		1.4		—		65.8
Europe:
Switzerland		453.3		43.4		156.7		—		653.4
Italy		20.6		21.7		305.0		—		347.3
Spain		169.4		—		—		—		169.4
Other European countries		234.8		19.9		124.9		—		379.6
Asia:
Singapore		528.8		2.2		538.2		—		1,069.2
Japan		71.8		—		411.6		—		483.4
Other Asian countries		185.6		0.9		35.6		—		222.1
Total	$	4,075.9	$	527.9	$	2,572.2	$	(79.3)	$	7,096.7

Schedule of provisionally priced copper and molybdenum sales outstanding

	Sales volume	Priced at
	(million lbs.)	(per pound)	Month of settlement
Copper	139.8	3.52	January through April 2021
Molybdenum	12.9	10.03	January through March 2021

Schedule of provisional sales price adjustments included in accounts receivable and net sales

Provisional sales price adjustments included in accounts receivable and net sales were as follows at December, 31 (in millions):

	At December 31,
	2020		2019
Copper	$	17.4	$	4.0
Molybdenum		14.1		(8.2)
Total	$	31.5	$	(4.2)