SEGMENT AND RELATED INFORMATION: (Tables)

9 Months Ended

Sep. 30, 2024

SEGMENT AND RELATED INFORMATION:

Schedule of financial information relating to Company's segments

	Three Months Ended September 30, 2024
	(in millions)
			Mexican				Corporate, other
	Mexican		IMMSA		Peruvian		and
	Open-pit		Unit		Operations		eliminations		Consolidated
Net sales outside of segments	$	1,596.7	$	144.3	$	1,189.9	$	—	$	2,930.9
Intersegment sales		6.0		40.6		—		(46.6)		—
Cost of sales (exclusive of depreciation, amortization and depletion)		612.7		123.2		543.9		(56.8)		1,223.1
Selling, general and administrative		17.1		3.2		9.1		1.8		31.2
Depreciation, amortization and depletion		105.4		19.3		79.9		8.5		213.1
Exploration		1.3		2.6		7.3		2.0		13.2
Operating income	$	866.2	$	36.6	$	549.7	$	(2.2)		1,450.3
Less:
Interest, net										(44.8)
Other income (expense)										21.2
Income taxes										(526.4)
Equity earnings of affiliate										(0.5)
Non-controlling interest										(3.1)
Net income attributable to SCC									$	896.7
Capital investment	$	145.2	$	30.2	$	67.2	$	3.7	$	246.4
Property and mine development, net	$	4,852.6	$	784.9	$	3,776.5	$	513.1	$	9,927.1
Total assets	$	8,975.0	$	1,196.6	$	5,473.9	$	2,770.0	$	18,415.5

	Three Months Ended September 30, 2023
	(in millions)
			Mexican				Corporate, other
	Mexican		IMMSA		Peruvian		and
	Open-pit		Unit		Operations		eliminations		Consolidated
Net sales outside of segments	$	1,462.2	$	107.4	$	936.0	$	—	$	2,505.6
Intersegment sales				46.2				(46.2)		—
Cost of sales (exclusive of depreciation, amortization and depletion)		591.6		133.3		490.9		(40.1)		1,175.7
Selling, general and administrative		18.9		2.6		9.4		1.8		32.7
Depreciation, amortization and depletion		96.9		16.8		88.6		10.2		212.5
Exploration		1.9		2.1		8.1		3.4		15.5
Operating income	$	752.9	$	(1.2)	$	339.0	$	(21.5)		1,069.2
Less:
Interest, net										(60.7)
Other income (expense)										8.9
Income taxes										(395.3)
Equity earnings of affiliate										(0.1)
Non-controlling interest										(2.5)
Net income attributable to SCC									$	619.5
Capital investment	$	141.5	$	40.1	$	76.1	$	5.0	$	262.7
Property and mine development, net	$	4,634.3	$	727.4	$	3,616.2	$	752.9	$	9,730.8
Total assets	$	8,531.7	$	1,153.6	$	4,643.2	$	2,636.5	$	16,965.0

	Nine Months Ended September 30, 2024
	(in millions)
			Mexican				Corporate, other
	Mexican		IMMSA		Peruvian		and
	Open-pit		Unit		Operations		eliminations		Consolidated
Net sales outside of segments	$	4,801.1	$	382.5	$	3,465.3	$	—	$	8,649.0
Intersegment sales		6.0		134.0		—		(140.1)		—
Cost of sales (exclusive of depreciation, amortization and depletion)		1,870.3		362.8		1,544.6		(148.3)		3,629.6
Selling, general and administrative		52.3		9.1		28.2		6.4		96.0
Depreciation, amortization and depletion		307.7		56.7		241.1		26.2		631.7
Exploration		7.3		7.0		23.8		6.4		44.4
Operating income	$	2,569.6	$	80.9	$	1,627.6	$	(30.9)		4,247.3
Less:
Interest, net										(154.7)
Other income (expense)										20.3
Income taxes										(1,528.6)
Equity earnings of affiliate										8.1
Non-controlling interest										(9.5)
Net income attributable to SCC									$	2,582.9
Capital investment	$	486.9	$	91.5	$	203.6	$	10.0	$	792.0
Property and mine development, net	$	4,852.6	$	784.9	$	3,776.5	$	513.1	$	9,927.1
Total assets	$	8,975.0	$	1,196.6	$	5,473.9	$	2,770.0	$	18,415.5

	Nine Months Ended September 30, 2023
	(in millions)
			Mexican				Corporate, other
	Mexican		IMMSA		Peruvian		and
	Open-pit		Unit		Operations		eliminations		Consolidated
Net sales outside of segments	$	4,400.3	$	351.3	$	2,848.6	$	—	$	7,600.2
Intersegment sales		—		123.0		—		(123.0)		—
Cost of sales (exclusive of depreciation, amortization and depletion)		1,781.9		411.5		1,442.7		(118.5)		3,517.6
Selling, general and administrative		51.7		7.9		27.9		6.6		94.1
Depreciation, amortization and depletion		288.1		51.6		253.0		32.7		625.4
Exploration		4.6		6.0		20.2		8.7		39.5
Operating income	$	2,274.0	$	(2.7)	$	1,104.8	$	(52.5)		3,323.6
Less:
Interest, net										(180.5)
Other income (expense)										24.9
Income taxes										(1,170.2)
Equity earnings of affiliate										(10.3)
Non-controlling interest										(7.3)
Net income attributable to SCC									$	1,980.2
Capital investment	$	406.3	$	102.6	$	232.5	$	11.8	$	753.2
Property and mine development, net	$	4,634.3	$	727.4	$	3,616.2	$	752.9	$	9,730.8
Total assets	$	8,531.7	$	1,153.6	$	4,643.2	$	2,636.5	$	16,965.0