SEGMENT AND RELATED INFORMATION: (Tables)

6 Months Ended

Jun. 30, 2017

SEGMENT AND RELATED INFORMATION:

Schedule of financial information relating to Company's segments

	Three Months Ended June 30, 2017
	(in millions)
	Mexican Open-Pit		Mexican IMMSA Unit		Peruvian Operations		Corporate, other and eliminations			Consolidated
Net sales outside of segments	$	899.8	$	107.3	$	522.7				$	1,529.8
Intersegment sales			17.6				$	(17.6	)	—
Cost of sales (exclusive of depreciation, amortization and depletion)	391.5		91.4		343.5		(21.6		)	804.8
Selling, general and administrative	11.1		2.0		8.5		0.6			22.2
Depreciation, amortization and depletion	100.0		12.5		57.1		1.6			171.2
Exploration	0.7		0.9		2.2		1.9			5.7
Environmental remediation	—		—		—		—			—
Operating income	$	396.5	$	18.1	$	111.4	$	(0.1	)	525.9
Less:
Interest, net										(71.7		)
Other income (expense)										3.1
Income taxes										(160.3		)
Equity earnings of affiliate										3.5
Non-controlling interest										(0.8		)
Net income attributable to SCC										$	299.7
Capital investment	$	88.8	$	6.0	$	155.7	$	1.6		$	252.1
Property and mine development, net	$	5,149.8	$	376.0	$	3,082.7	$	229.0		$	8,837.5
Total assets	$	8,660.5	$	868.3	$	4,645.6	$	(659.1	)	$	13,515.3

	Three Months Ended June 30, 2016
	Mexican Open-Pit		Mexican IMMSA Unit		Peruvian Operations		Corporate, other and eliminations			Consolidated
Net sales outside of segments	$	815.9	$	82.7	$	436.5				$	1,335.1
Intersegment sales			19.4				$	(19.4	)	—
Cost of sales (exclusive of depreciation, amortization and depletion)	431.8		73.3		311.6		(65.1		)	751.6
Selling, general and administrative	12.7		1.8		8.6		0.5			23.6
Depreciation, amortization and depletion	107.6		14.4		53.9		(11.4		)	164.5
Exploration	1.4		1.3		4.2		3.4			10.3
Operating income	$	262.4	$	11.3	$	58.2	$	53.2		385.1
Less:
Interest, net										(70.0		)
Other income (expense)										5.8
Income taxes										(102.0		)
Equity earnings of affiliate										3.6
Non-controlling interest										(0.6		)
Net income attributable to SCC										$	221.9
Capital investment	$	157.8	$	10.7	$	173.1	$	—		$	341.6
Property and mine development, net	$	5,068.5	$	455.9	$	2,720.9	$	253.1		$	8,498.4
Total assets	$	8,640.2	$	790.4	$	4,080.7	$	(723.9	)	$	12,787.4

	Six Months Ended June 30, 2017
	(in millions)
	Mexican Open-Pit			Mexican IMMSA Unit		Peruvian Operations		Corporate, other and eliminations			Consolidated
Net sales outside of segments	$	1,852.0		$	217.6	$	1,044.2				$	3.113.8
Intersegment sales				38.1				$	(38.1	)	—
Cost of sales (exclusive of depreciation, amortization and depletion)	856.4			174.4		659.2		(41.4		)	1,648.6
Selling, general and administrative	21.1			4.2		17.5		0.8			43.6
Depreciation, amortization and depletion	198.6			25.9		92.4		7.7			324.6
Exploration	1.2			1.6		4.3		3.7			10.8
Environmental remediation	(10.2		)	—		—		—			(10.2		)
Operating income	$	784.9		$	49.6	$	270.8	$	(9.0	)	1,096.4
Less:
Interest, net											(161.6		)
Other income (expense)											7.8
Income taxes											(336.6		)
Equity earnings of affiliate											9.7
Non-controlling interest											(1.6		)
Net income attributable to SCC											$	614.1
Capital investment	$	146.1		$	13.0	$	336.8	$	1.8		$	497.7
Property and mine development, net	$	5,149.8		$	376.0	$	3,082.7	$	229.0		$	8,837.5
Total assets	$	8,660.5		$	868.3	$	4,645.6	$	(659.1	)	$	13,515.3

	Six Months Ended June 30, 2016
	Mexican Open-Pit		Mexican IMMSA Unit		Peruvian Operations		Corporate, other and eliminations			Consolidated
Net sales outside of segments	$	1,557.5	$	152.7	$	869.9	—			$	2,580.1
Intersegment sales			34.5				$	(34.5	)	—
Cost of sales (exclusive of depreciation, amortization and depletion)	826.3		142.0		616.2		(106.0		)	1,478.5
Selling, general and administrative	26.2		3.3		19.7		0.7			49.9
Depreciation, amortization and depletion	172.5		23.8		108.3		(4.8		)	299.8
Exploration	3.0		3.1		7.5		7.1			20.7
Operating income	$	529.5	$	15.0	$	118.2	$	68.5		731.2
Less:
Interest, net										(142.8		)
Other income (expense)										5.4
Income taxes										(194.2		)
Equity earnings of affiliate										8.7
Non-controlling interest										(1.3		)
Net income attributable to SCC										$	407.0
Capital investment	$	266.9	$	17.5	$	280.4	$	0.1		$	564.9
Property and mine development, net	$	5,068.5	$	455.9	$	2,720.9	$	253.1		$	8,498.4
Total assets	$	8,640.2	$	790.4	$	4,080.7	$	(723.9	)	$	12,787.4