Southern Copper (SCCO) 10-K 27 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Jan. 31, 2014	Jun. 30, 2013
Document and Entity Information	'	'	'
Entity Registrant Name	'SOUTHERN COPPER CORP/	'	'
Entity Central Index Key	'0001001838	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Amendment Flag	'false	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Public Float	'	'	$4,312.30
Entity Common Stock, Shares Outstanding	'	833,549,550	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'

CONSOLIDATED_STATEMENT_OF_EARN

CONSOLIDATED STATEMENT OF EARNINGS (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
CONSOLIDATED STATEMENT OF EARNINGS	'	'		'
Net sales (including sales to related parties, see note 18)	$5,952,943	$6,669,266		$6,818,721
Operating cost and expenses:	'	'		'
Cost of sales (exclusive of depreciation, amortization and depletion shown separately below)	2,871,299	2,769,233		2,763,152
Selling, general and administrative	102,579	101,297		104,473
Depreciation, amortization and depletion	395,970	325,743		288,138
Exploration	50,983	47,877		37,535
Legal fees related to SCC shareholder derivative lawsuit (Note 14)	'	316,233		'
Total operating costs and expenses	3,420,831	3,560,383		3,193,298
Operating income	2,532,112	3,108,883		3,625,423
Interest expense	-265,551	-201,785		-192,340
Capitalized interest	68,946	29,380		5,851
Other income (expense)	17,106	21,833		-4,043
Interest income	19,985	15,231		13,797
Income before income taxes	2,372,598	2,973,542		3,448,688
Income taxes	769,322	1,080,872		1,104,335
Net income before equity earnings of affiliate	1,603,276	1,892,670		2,344,353
Equity earnings of affiliate, net of income tax	20,905	48,702		'
Net income	1,624,181	1,941,372		2,344,353
Less: Net income attributable to the non-controlling interest	5,664	6,740		7,929
Net income attributable to SCC	$1,618,517	$1,934,632		$2,336,424
Per common share amounts attributable to SCC:	'	'		'
Net earnings - basic and diluted (in dollars per share)	$1.92	$2.28	[1]	$2.73
Dividends paid (in dollars per share)	$0.68	$4.06		$2.43
Weighted average shares outstanding - basic and diluted (in shares)	842,668	848,346		854,649
[1]	Number of shares and per share amounts have been retroactively adjusted in the financial statements to reflect the effect of the 9.0 million shares paid as stock dividend on February 28, 2012.

CONSOLIDATED_STATEMENT_OF_EARN1

CONSOLIDATED STATEMENT OF EARNINGS (Parenthetical)	0 Months Ended
In Millions, unless otherwise specified	Feb. 28, 2012
CONSOLIDATED STATEMENT OF EARNINGS	'
Common shares paid as stock dividend (in shares)	9

CONSOLIDATED_STATEMENT_OF_COMP

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
COMPREHENSIVE INCOME:	'	'		'
Net income	$1,624,181	$1,941,372		$2,344,353
Other comprehensive income (loss) net of tax:	'	'		'
Decrease (increase) in pension and other post-retirement benefits (net of income tax of $1.4 million, $(1.5) million and $4.7 million)	2,207	-3,394		8,310
Derivative instruments classified as cash flow hedge:	'	'		'
Decrease in prior period accumulated unrealized (gain) loss (net of income taxes of $3.5 million and $(71.4) million in 2012 and 2011, respectively)	'	-5,452	[1]	125,562	[1]
Unrealized gain (loss) of the period (net of income tax of $(3.5) million in 2012)	'	'		5,452
Unrealized net gain on derivative instruments classified as cash flow hedges	'	-5,452		131,014
Total other comprehensive gain (loss)	2,207	-8,846		139,324
Total comprehensive income	1,626,388	1,932,526		2,483,677
Comprehensive income attributable to the non-controlling interest	5,664	6,736		7,956
Comprehensive income attributable to SCC	$1,620,724	$1,925,790		$2,475,721
[1]	The decrease in prior period unrealized (gain) loss is the reversal of (losses) gains or open copper derivative positions that subsequently expired with net realized gain or (loss), due to changes in copper prices.

CONSOLIDATED_STATEMENT_OF_COMP1

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Parenthetical) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME	'	'	'
Decrease (increase) in pension and other post-retirement benefits, income tax	$1.40	($1.50)	$4.70
Decrease in prior period accumulated unrealized (gain) loss, income taxes	'	3.5	-71.4
Unrealized gain (loss) of the period, income tax	'	($3.50)	'

CONSOLIDATED_BALANCE_SHEET

CONSOLIDATED BALANCE SHEET (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$1,672,695	$2,459,488
Short-term investments	208,268	134,298
Accounts receivable trade	533,226	669,333
Accounts receivable other (including related parties 2013- $38,062 and 2012 - $25,740)	64,552	82,636
Inventories	693,942	696,140
Deferred income tax	84,377	103,193
Other current assets	158,990	156,262
Total current assets	3,416,050	4,301,350
Property, net	6,476,168	5,156,731
Leachable material	395,177	249,404
Intangible assets, net	110,219	109,300
Related parties receivable	161,244	183,950
Deferred income tax	395,100	205,939
Equity method investment	57,142	47,054
Other assets	199,322	130,021
Total assets	11,210,422	10,383,749
Current liabilities:	'	'
Current portion of long-term debt	'	10,000
Accounts payable (including related parties 2013- $28,373 and 2012- $20,310)	500,737	475,566
Accrued income taxes	'	12,198
Accrued workers' participation	192,371	266,571
Accrued interest	70,787	70,582
Other accrued liabilities	19,689	22,218
Total current liabilities	783,584	857,135
Long-term debt	4,204,915	4,203,863
Deferred income taxes	244,875	141,426
Non-current taxes payable	214,393	214,934
Other liabilities and reserves	76,000	59,065
Asset retirement obligation	124,835	118,226
Total non-current liabilities	4,865,018	4,737,514
Commitments and contingencies (Note 13)	'	'
STOCKHOLDER'S EQUITY (Note 14)	'	'
Common stock par value $0.01; shares authorized, 2013 and 2012 - 2,000,000; shares issued, 2013 and 2012 - 884,596	8,846	8,846
Additional paid-in capital	3,340,349	3,320,927
Retained earnings	3,394,827	2,350,126
Accumulated other comprehensive income	6,239	4,032
Treasury stock, at cost, common shares	-1,216,599	-918,791
Total Southern Copper Corporation stockholders' equity	5,533,662	4,765,140
Non-controlling interest	28,158	23,960
Total equity	5,561,820	4,789,100
Total liabilities and equity	$11,210,422	$10,383,749

CONSOLIDATED_BALANCE_SHEET_Par

CONSOLIDATED BALANCE SHEET (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
CONSOLIDATED BALANCE SHEET	'	'
Accounts receivable other, related parties	$38,062	$25,740
Accounts payable, related parties	$28,373	$20,310
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, shares authorized	2,000,000	2,000,000
Common stock, shares issued	884,596	884,596

CONSOLIDATED_STATEMENT_OF_CASH

CONSOLIDATED STATEMENT OF CASH FLOWS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
OPERATING ACTIVITIES	'	'	'
Net income	$1,624,181	$1,941,372	$2,344,353
Adjustments to reconcile net earnings to net cash provided from operating activities:	'	'	'
Depreciation, amortization and depletion	395,970	325,743	288,138
Equity earnings of affiliate, net of dividends received	-10,088	-17,666	'
Loss (gain) on currency translation effect	13,089	15,174	-19,263
Provision (benefit) for deferred income taxes	-97,188	55,807	-117,946
Gain on sale of investment	'	-18,200	'
(Gain) loss on short-term investments	'	-10,623	3,781
Cash provided from (used for) operating assets and liabilities:	'	'	'
Accounts receivable	136,107	-14,739	-135,552
Inventories	-143,575	-180,684	-194,484
Accounts payable and accrued liabilities	-63,551	-135,742	-136,897
Other operating assets and liabilities	2,279	43,520	47,783
Net cash provided from operating activities	1,857,224	2,003,962	2,079,913
INVESTING ACTIVITIES	'	'	'
Capital expenditures	-1,703,349	-1,051,900	-612,905
Purchase of short-term investments	-73,970	-152,441	-532,188
Proceeds on sale of short-term investment	'	540,098	82,663
Investment in affiliated companies	'	'	-33,276
Proceeds on sale of investment	'	18,200	'
Loan repaid by related parties	22,706	'	'
Loan granted to related parties	'	-37,599	'
Sale of property	4,618	15,072	12,575
Release of escrow deposit on long-term debt	5,089	'	'
Other	'	'	-9,741
Net cash used for investing activities	-1,744,906	-668,570	-1,092,872
FINANCING ACTIVITIES	'	'	'
Debt repaid	-10,000	-10,000	-15,250
Debt incurred	'	1,477,455	'
Capitalization of debt issuance cost	'	-7,685	'
Repurchase of common shares	-281,438	-147,344	-273,690
Dividends paid to common stockholders	-573,816	-3,139,971	-2,080,353
SCC shareholder derivative lawsuit	'	2,108,221	'
Distributions to non-controlling interest	-1,350	-3,613	-6,885
Other	1,275	1,035	1,153
Net cash (used for) provided from financing activities	-865,329	278,098	-2,375,025
Effect of exchange rate changes on cash and cash equivalents	-33,782	-2,120	43,425
Increase (decrease) in cash and cash equivalents	-786,793	1,611,370	-1,344,559
Cash and cash equivalents, at beginning of year	2,459,488	848,118	2,192,677
Cash and cash equivalents, at end of year	1,672,695	2,459,488	848,118
Cash paid during the year for:	'	'	'
Interest	262,490	189,217	189,940
Income taxes	819,897	1,140,352	1,234,453
Workers' participation	276,376	256,042	241,420
Supplemental schedule of non-cash operating, investing and financing activities:	'	'	'
Decrease (increase) in pension and other post-retirement benefits	2,207	-3,394	8,310
Unrealized gain (loss) on cash flow hedge derivative instruments recognized in other comprehensive income (net of taxes)	'	'	5,417
Effect of common stock dividend:	'	'	'
Retained earnings	'	296,590	'
Treasury stock	'	-151,458	'
Additional paid-in capital	'	($145,132)	'

CONSOLIDATED_STATEMENT_OF_CHAN

CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (USD $)	Total	RETAINED EARNINGS:	ADDITIONAL PAID-IN CAPITAL:	TREASURY STOCK:	TREASURY STOCK:	TREASURY STOCK:	RETAINED EARNINGS:	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS):	STOCKHOLDERS' EQUITY	NON-CONTROLLING INTEREST
In Thousands, unless otherwise specified					Common Class A	Common Class B
Balance at Dec. 31, 2010	$3,910,409	$8,846	$1,034,764	'	($460,967)	($161,755)	$3,595,983	($126,423)	$3,890,448	$19,961
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'	'	'	'	'	'
Other activity of the period	'	'	4,618	'	'	'	'	'	'	'
Share repurchase program	-273,700	'	'	'	-273,690	'	'	'	'	'
Used for corporate purposes	'	'	'	'	534	'	'	'	'	'
Other activity, including dividend, interest and currency translation effect	'	'	'	'	'	-1,974	'	'	'	'
Other comprehensive income (loss)	2,483,677	'	'	'	'	'	'	139,297	'	'
Net earnings	2,336,424	'	'	'	'	'	2,336,424	'	'	7,929
Common stock dividend distribution	'	'	'	'	'	'	-2,080,353	'	'	-6,885
Other activity	'	'	'	'	'	'	'	'	'	-26
Balance at Dec. 31, 2011	4,036,283	8,846	1,039,382	-897,852	-734,123	-163,729	3,852,054	12,874	4,015,304	20,979
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'	'	'	'	'	'
SCC shareholder derivative lawsuit	'	'	2,108,221	'	'	'	'	'	'	'
Other activity of the period	'	'	28,192	'	'	'	'	'	'	'
Share repurchase program	-147,300	'	'	'	-147,344	'	'	'	'	'
Used for corporate purposes	'	'	'	'	245	'	'	'	'	'
Other activity, including dividend, interest and currency translation effect	'	'	'	'	'	-25,297	'	'	'	'
Other comprehensive income (loss)	1,932,526	'	'	'	'	'	'	-8,842	'	'
Net earnings	1,934,632	'	'	'	'	'	1,934,632	'	'	6,740
Common stock dividend distribution	'	'	145,132	'	'	'	-3,436,560	'	'	-3,613
Common stock distribution, per share $0.35	'	'	'	'	151,457	'	'	'	'	'
Other activity	'	'	'	'	'	'	'	'	'	-146
Balance at Dec. 31, 2012	4,789,100	8,846	3,320,927	-918,791	-729,765	-189,026	2,350,126	4,032	4,765,140	23,960
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'	'	'	'	'	'
Other activity of the period	'	'	19,422	'	'	'	'	'	'	'
Share repurchase program	'	'	'	'	-281,438	'	'	'	'	'
Used for corporate purposes	'	'	'	'	224	'	'	'	'	'
Other activity, including dividend, interest and currency translation effect	'	'	'	'	'	-16,594	'	'	'	'
Other comprehensive income (loss)	1,626,388	'	'	'	'	'	'	2,207	'	'
Net earnings	1,618,517	'	'	'	'	'	1,618,517	'	'	5,664
Common stock dividend distribution	'	'	'	'	'	'	-573,816	'	'	-1,350
Other activity	'	'	'	'	'	'	'	'	'	-116
Balance at Dec. 31, 2013	$5,561,820	$8,846	$3,340,349	($1,216,599)	($1,010,979)	($205,620)	$3,394,827	$6,239	$5,533,662	$28,158

CONSOLIDATED_STATEMENT_OF_CHAN1

CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Dividends paid as cash dividend (in dollars per share)	$0.68	$4.06	$2.43
RETAINED EARNINGS:	'	'	'
Dividends paid as cash dividend (in dollars per share)	$0.68	$3.71	$2.43
TREASURY STOCK: | Common Class A	'	'	'
Dividends paid as cash dividend (in dollars per share)	'	$0.35	'

DESCRIPTION_OF_THE_BUSINESS

DESCRIPTION OF THE BUSINESS:	12 Months Ended
	Dec. 31, 2013
DESCRIPTION OF THE BUSINESS:	'
DESCRIPTION OF THE BUSINESS:	'
	NOTE 1-DESCRIPTION OF THE BUSINESS:
	The Company is a majority-owned, indirect subsidiary of Grupo Mexico. At December 31, 2013, Grupo Mexico through its wholly-owned subsidiary Americas Mining Corporation (“AMC”) owned 82.3% of our capital stock. The consolidated financial statements presented herein consist of the accounts of Southern Copper Corporation (“SCC” or the “Company”), a Delaware corporation, and its subsidiaries.  The Company is an integrated producer of copper and other minerals, and operates mining, smelting and refining facilities in Peru and Mexico.  The Company conducts its primary operations in Peru through a registered branch (the “Peruvian Branch” or “Branch” or “SPCC Peru Branch”).  The Peruvian Branch is not a corporation separate from the Company.  The Company’s Mexican operations are conducted through subsidiaries. The Company also conducts exploration activities in Argentina, Chile, Ecuador, Mexico and Peru.

SUMMARY_OF_SIGNIFICANT_ACCOUNT

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:	12 Months Ended
	Dec. 31, 2013
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:	'
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:	'
	NOTE 2-SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:
	Principles of consolidation—
	The consolidated financial statements include the accounts of subsidiaries of which the Company has voting control, in accordance with Accounting Standards Codification 810 Consolidation.  Such financial statements are prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”).
	Use of estimates—
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period.  Significant items subject to such estimates and assumptions include the carrying value of ore reserves that are the basis for future cash flow estimates and amortization calculations; environmental, reclamation, closure and retirement obligations; estimates of recoverable copper in mill and leach stockpiles; asset impairments (including estimates of future cash flows); bad debts; inventory obsolescence; deferred and current income tax; valuation allowances for deferred tax assets; reserves for contingencies and litigation; and fair value of financial instruments.  Management bases its estimates on the Company’s historical experience and on various other assumptions that are believed to be reasonable under the circumstances.  Actual results could differ from those estimates.
	Revenue recognition—
	Substantially all of the Company’s copper is sold under annual or other longer-term contracts.
	Revenue is recognized when title passes to the customer.  The passing of title is based on terms of the contract, generally upon shipment.  Copper revenue is determined based on the monthly average of prevailing commodity prices according to the terms of the contracts.  The Company provides allowances for doubtful accounts based upon historical bad debt and claims experience and periodic evaluation of specific customer accounts.
	For certain of the Company’s sales of copper and molybdenum products, customer contracts allow for pricing based on a month subsequent to shipping, in most cases within the following three months and occasionally in some cases a few additional months.  In such cases, revenue is recorded at a provisional price at the time of shipment.  The provisionally priced copper sales are adjusted to reflect forward LME or COMEX copper prices at the end of each month until a final adjustment is made to the price of the shipments upon settlement with customers pursuant to the terms of the contract.  In the case of molybdenum sales, for which there are no published forward prices, the provisionally priced sales are adjusted to reflect the market prices at the end of each month until a final adjustment is made to the price of the shipments upon settlement with customers pursuant to the terms of the contract.
	These provisional pricing arrangements are accounted for separately from the contract as an embedded derivative instrument under ASC 815-30 “Derivatives and Hedging — Cash Flow Hedges.”  The Company sells copper in concentrate, anode, blister and refined form at industry standard commercial terms.  Net sales include the invoiced value and corresponding fair value adjustment of the related forward contract of copper, zinc, silver, molybdenum, acid and other metals.
	Shipping and handling fees and costs—
	Amounts billed to customers for shipping and handling are classified as sales.  Amounts incurred for shipping and handling are included in cost of sales (exclusive of depreciation, amortization and depletion).
	Cash and cash equivalents—
	Cash and cash equivalents include bank deposits, certificates of deposit and short-term investment funds with original maturities of three months or less at the date of purchase.  The carrying value of cash and cash equivalents approximates fair value.
	Short-term investments—
	The Company accounts for short-term investments in accordance with ASC 320-10 “Investments Debt and Equity Securities — Recognition.”  The Company determines the appropriate classification of all short-term investments as held-to-maturity, available-for-sale or trading at the time of purchase and re-evaluates such classifications as of each balance sheet date.  Unrealized gains and losses on available-for-sale investments, net of taxes, are reported as a component of accumulated other comprehensive income (loss) in stockholders’ equity, unless such loss is deemed to be other than temporary.
	Inventories—
	Metal inventories, consisting of work-in-process and finished goods, are carried at the lower of average cost or market.  Costs incurred in the production of metal inventories exclude general and administrative costs.
	Work-in-process inventories represent materials that are in the process of being converted into a saleable product.  Conversion processes vary depending on the nature of the copper ore and the specific mining operation.  For sulfide ores, processing includes milling and concentrating and results in the production of copper and molybdenum concentrates.
	Finished goods include saleable products (e.g., copper concentrates, copper anodes, copper cathodes, copper rod, molybdenum concentrate and other metallurgical products).
	Supplies inventories are carried at the lower of average cost less a reserve for obsolescence or market.
	Long-term inventory - Leachable material—
	The leaching process is an integral part of the mining operations carried out at the Company’s open-pit mines. The Company capitalizes the production cost of leachable material at its Toquepala, La Caridad and Buenavista mines recognizing it as inventory. The estimates of recoverable mineral content contained in the leaching dumps are supported by engineering studies.  As the production cycle of the leaching process is significantly longer than the conventional process of concentrating, smelting and electrolytic refining, the Company includes on its balance sheet, current leach inventory (included in work-in-process inventories) and long-term leach inventory.  The cost attributed to the leach material is charged to cost of sales generally over a five-year period (the average estimated recovery period based on the historical recovery percentages of each mine).
	Property—
	Property is recorded at acquisition cost, net of accumulated depreciation and amortization.  Cost includes major expenditures for improvements and replacements, which extend useful lives or increase capacity and interest costs associated with significant capital additions.  Maintenance, repairs, normal development costs at existing mines, and gains or losses on assets retired or sold are reflected in earnings as incurred.
	Buildings and equipment are depreciated on the straight-line method over estimated lives from five to 40 years or the estimated life of the mine if shorter.
	Mine development —
	Mine development includes primarily the cost of acquiring land rights to an exploitable ore body, pre-production stripping costs at new mines that are commercially exploitable, costs associated with bringing new mineral properties into production, and removal of overburden to prepare unique and identifiable areas outside the current mining area for such future production.  Mine development costs are amortized on a unit of production basis over the remaining life of the mines.
	There is a diversity of practices in the mining industry in the treatment of drilling and other related costs to delineate new ore reserves.  The Company follows the practices outlined in the next two paragraphs in its treatment of drilling and related costs.
	Drilling and other associated costs incurred in the Company’s efforts to delineate new resources, whether near-mine or Greenfield are expensed as incurred.  These costs are classified as mineral exploration costs.  Once the Company determines through feasibility studies that proven and probable reserves exist and that the drilling and other associated costs embody a probable future benefit that involves a capacity, singly or in combination with other assets, to contribute directly or indirectly to future net cash inflow, then the costs are classified as mine development costs.  These mine development costs incurred prospectively to develop the property are capitalized as incurred, until the commencement of production, and are amortized using the units of production method over estimated life of the ore body.  During the production stage, drilling and other related costs incurred to maintain production are included in production cost in the period in which they are incurred.
	Drilling and other related costs incurred in the Company’s efforts to delineate a major expansion of reserves at an existing production property are expensed as incurred.  Once the Company determines through feasibility studies that proven and probable incremental reserves exist and that the drilling and other associated costs embody a probable future benefit that involves a capacity, singly or in combination with other assets, to contribute directly or indirectly to future net cash inflow, then the costs are classified as mine development costs.  These incremental mine development costs are capitalized as incurred, until the commencement of production and amortized using the units of production method over the estimated life of the ore body.  A major expansion of reserves is one that increases total reserves at a property by approximately 10% or more.
	For the years ended December 31, 2013, 2012 and 2011, the Company did not capitalize any drilling and related costs.  The net balance of capitalized mine development costs at December 31, 2013 and 2012, were $36.2 million and $37.9 million, respectively.
	Asset retirement obligations (reclamation and remediation costs)—
	The fair value of a liability for asset retirement obligations is recognized in the period in which the liability is incurred.  The liability is measured at fair value and is adjusted to its present value in subsequent periods as accretion expense is recorded.  The corresponding asset retirement costs are capitalized as part of the carrying value of the related long-lived assets and depreciated over the asset’s useful life.
	Intangible assets—
	Intangible assets include primarily the excess amount paid over the book value for investment shares and mining and engineering development studies.  Intangible assets are carried at acquisition costs, net of accumulated amortization and are amortized principally on a unit of production basis over the estimated remaining life of the mines.  Intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset may not be recoverable.
	Debt issuance costs—
	Debt issuance costs, which are included in other assets, are amortized using the effective interest method over the term of the related debt.
	Ore reserves—
	The Company periodically reevaluates estimates of its ore reserves, which represent the Company’s estimate as to the amount of unmined copper remaining in its existing mine locations that can be produced and sold at a profit.  Such estimates are based on engineering evaluations derived from samples of drill holes and other openings, combined with assumptions about copper market prices and production costs at each of the respective mines.
	The Company updates its estimate of ore reserves at the beginning of each year. In this calculation the Company uses current metal prices which are defined as the average metal price over the preceding three years.  The current price per pound of copper, as defined, was $3.65, $3.68 and $3.26 at the end of 2013, 2012 and 2011, respectively.  The ore reserve estimates are used to determine the amortization of mine development and intangible assets.
	Once the Company determines through feasibility studies that proven and probable reserves exist and that the drilling and other associated costs embody a probable future benefit that involves a capacity, singly or in combination with other assets, to contribute directly or indirectly to future net cash inflow, then the costs are classified as mine development costs and the Company discloses the related ore reserves.
	Exploration—
	Tangible and intangible costs incurred in the search for mineral properties are charged against earnings when incurred.
	Income taxes—
	Provisions for income taxes are based on taxes payable or refundable for the current year and deferred taxes on temporary differences between the amount of taxable income and pretax financial income and between the tax bases of assets and liabilities and their reported amounts in the financial statements.  Deferred tax assets and liabilities are included in the financial statements at currently enacted income tax rates applicable to the period in which the deferred tax assets and liabilities are expected to be realized and settled as prescribed in ASC 740 “Income taxes.”  As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.  Deferred income tax assets are reduced by any benefits that, in the opinion of management, are more likely not to be realized.
	The Company classifies income tax-related interest and penalties as income taxes in the financial statements.
	The Company’s operations involve dealing with uncertainties and judgments in the application of complex tax regulations in multiple jurisdictions.  The final taxes paid are dependent upon many factors, including negotiations with taxing authorities in various jurisdictions and resolution of disputes arising from federal, state, and international tax audits.  The Company recognizes potential liabilities and records tax liabilities for anticipated tax audit issues in the U.S. and other tax jurisdictions based on its estimate of whether, and the extent to which, additional taxes will be due.  The Company follows the guidance of ASC 740 “Income taxes” to record these liabilities.  (See Note 7 “Income taxes” of the consolidated financial statements for additional information).  The Company adjusts these reserves in light of changing facts and circumstances; however, due to the complexity of some of these uncertainties, the ultimate resolution may result in a payment that is materially different from the Company’s current estimate of the tax liabilities.  If its estimate of tax liabilities proves to be less than the ultimate assessment, an additional charge to expense would result.  If payment of these amounts ultimately proves to be less than the recorded amounts, the reversal of the liabilities would result in tax benefits being recognized in the period when the Company determines the liabilities are no longer necessary.  The Company recognizes interest and penalties, if any, related to unrecognized tax benefits in income tax expense.
	Foreign exchange—
	The Company’s functional currency is the U.S. dollar. As required by local law, both the Peruvian Branch and Minera Mexico maintain their books of accounts in Peruvian nuevos soles and Mexican pesos, respectively.
	Foreign currency assets and liabilities are remeasured into U.S. dollars at current exchange rates except for non-monetary items such as inventory, property, intangible assets and other assets which are remeasured at historical exchange rates.  Revenues and expenses are generally translated at actual exchange rates in effect during the period, except for those items related to balance sheet amounts that are remeasured at historical exchange rates.  Gains and losses from foreign currency remeasurement are included in earnings of the period.
	Gains and (losses) resulting from foreign currency transactions are included in “Cost of sales (exclusive of depreciation, amortization and depletion).”
	Derivative instruments—
	The Company utilizes certain types of derivative financial instruments to enhance its ability to manage risks that exist as part of its ongoing business operations and to enhance its return on Company assets.  Derivative contracts are reflected as assets or liabilities in the balance sheet at their fair value.  The estimated fair value of the derivatives is based on market and/or dealer quotations and in certain cases valuation modeling.  From time to time the Company has entered into copper and zinc swap contracts to protect a fixed copper and zinc price for portions of its metal sales, hedging contracts to fix power prices for a portion of its production costs, interest rate swap agreements to hedge the interest rate risk exposure on certain of its bank obligations with variable interest rates and currency swap arrangements to ensure Mexican peso/ U.S. dollar conversion rates.  Gains and losses related to copper and zinc hedges are included in net sales, gain and losses related to power costs are included in cost of sales, all other gains and losses on derivative contracts are included in “Gain (loss) on derivative contracts” in the consolidated statement of earnings.
	The Company assesses the effectiveness of the derivative contracts periodically using either regression analysis or the dollar offset approach, both retrospectively and prospectively, to determine whether the hedging instruments have been highly effective in offsetting changes in fair value of the hedged items.
	Unrealized gains (losses) on cash flow derivatives that meet the requirements of hedge accounting are included in “other comprehensive income” in the consolidated balance sheet until the underlying transaction is settled at which point the unrealized amounts in other comprehensive income are reclassified into earnings in the same period.
	Asset impairments -
	The Company evaluates long-term assets when events or changes in economic circumstances indicate that the carrying amount of such assets may not be recoverable.  These evaluations are based on business plans that are prepared using a time horizon that is reflective of the Company’s expectations of metal prices over its business cycle.  The Company is currently using a long-term average copper price of $3.00 per pound of copper and an average molybdenum price of $10.00 per pound, reflective of the current price environment, for impairment tests. The results of its impairment tests using these long-term copper and molybdenum prices show no impairment in the carrying value of their assets.
	In recent years its assumptions for long-term average prices resulted in stricter evaluations for impairment analysis than would the higher three year average prices for copper and molybdenum prices.  Should this situation reverse in the future with three year average prices below the long-term price assumption, the Company would assess the need to use the three year average prices in its evaluations.  The Company uses an estimate of the future undiscounted net cash flows of the related asset or asset group over the remaining life to measure whether the assets are recoverable and measures any impairment by reference to fair value.
	Other comprehensive income—
	Comprehensive income represents changes in equity during a period, except those resulting from investments by owners and distributions to owners.  During the fiscal years ended December 31, 2013, 2012 and 2011, the components of “other comprehensive income (loss)” were the unrealized gain (loss) on cash flow hedge derivative instruments, the unrecognized gain (loss) on employee benefit obligations and realized gain (loss) included in net income.
	Business segments-
	Company management views Southern Copper as having three reportable segments and manages it on the basis of these segments.  The segments identified by the Company are: 1) the Peruvian operations, which include the two open-pit copper mines in Peru and the plants and services supporting such mines, 2) the Mexican open-pit copper mines, which include La Caridad and Buenavista mine complexes and their supporting facilities and 3) the Mexican underground mining operations, which include five underground mines that produce zinc, copper, silver and gold, a coal mine and a zinc refinery. Please see Note 19 Segments and Related Information.
Senior Management Officers of the Company focus on operating income as measure of performance to evaluate different segments, and to make decisions to allocate resources to the reported segments.

SHORTTERM_INVESTMENTS

SHORT-TERM INVESTMENTS:	12 Months Ended
	Dec. 31, 2013
SHORT-TERM INVESTMENTS:	'
SHORT-TERM INVESTMENTS:	'
	NOTE 3- SHORT-TERM INVESTMENTS:
	Short-term investments were as follows ($ in millions):
		At December 31,
		2013			2012
	Trading securities	$	202.6		$	127.8
	Weighted average interest rate	3.78		%	1.87		%
	Available-for-sale	5.7			6.5
	Weighted average interest rate	0.42		%	0.43		%
	Total	$	208.3		$	134.3
	Trading securities consist of bonds issued by public companies and are publicly traded.  Each financial instrument is independent of the others.  The Company has the intention to sell these bonds in the short-term.
	Available-for-sale investments consist of securities issued by public companies.  Each security is independent of the others and, as of December 31, 2013 and 2012, included corporate bonds and asset and mortgage backed obligations.  As of December 31, 2013 and 2012, gross unrealized gains and losses on available-for-sale securities were not material.
	Related to these investments the Company earned interest, which was recorded as interest income in the consolidated statement of earnings.  Also the Company redeemed some of these securities and recognized gains (losses) due to changes in fair value, which were recorded as other income (expense) in the consolidated statement of earnings.
	The following table summarizes the activity of these investments by category (in millions):
		Years ended December 31,
		2013			2012
	Trading:
	Interest earned	$	5.2		$	3.1
	Unrealized gain (loss) at December 31,	$	(1.9	)	$	2.4
	Available-for-sale:
	Interest earned	(*		)	$	0.1
	Investment redeemed	$	0.8		$	1.9
	(*) Less than $0.1 million
	At December 31, 2013 and 2012, contractual maturities of the available-for-sale debt securities are as follows (in millions):
		2013			2012
	One year or less	$	0.4		$	0.4
	Maturing after one year through five years	—			—
	Maturing after five years through ten years	0.2			—
	Due after 10 years	5.1			6.1
	Total debt securities	$	5.7		$	6.5

INVENTORIES

INVENTORIES:	12 Months Ended
	Dec. 31, 2013
INVENTORIES:	'
INVENTORIES:	'
	NOTE 4-INVENTORIES:
		As of December 31,
	(in millions)	2013		2012
	Inventory, current:
	Metals at lower of average cost or market:
	Finished goods	$	84.2	$	101.1
	Work-in-process	305.4		310.8
	Supplies at average cost	304.3		284.2
	Total current inventory	$	693.9	$	696.1
	Inventory, long-term:
	Long-term leach stockpiles	$	395.2	$	249.4
	Total leaching costs capitalized as long-term inventory of leachable material amounted to $306.8 million and $225.5 million in 2013 and 2012, respectively. Long-term leaching inventories recognized as cost of sales amounted to $109.3 million, $68.5 million and $49.2 million in 2013, 2012 and 2011, respectively.

PROPERTY

PROPERTY:	12 Months Ended
	Dec. 31, 2013
PROPERTY:	'
PROPERTY:	'
	NOTE 5-PROPERTY:
		As of December 31,
	(in millions)	2013			2012
	Buildings and equipment	$	8,107.20		$	7,497.30
	Construction in progress	2,567.00			1,617.60
	Mine development	250.7			250.7
	Land, other than mineral	61.8			46.7
	Total property	10,986.70			9,412.30
	Accumulated depreciation, amortization and depletion	(4,510.5		)	(4,255.6		)
	Total property, net	$	6,476.20		$	5,156.70
	Construction in progress increased significantly in 2013 as a result of spending on the Company’s expansion projects. For more detailed information, please see Item 7, Management Discussion and Analysis of Financial Condition and Results of Operations — “Capital Investment Program.”
	Depreciation and depletion expense for the years ended December 31, 2013, 2012 and 2011, amounted to $393.6 million, $323.6 million and $286.0 million, respectively.

INTANGIBLE_ASSETS

INTANGIBLE ASSETS:	12 Months Ended
	Dec. 31, 2013
INTANGIBLE ASSETS:	'
INTANGIBLE ASSETS:	'
	NOTE 6-INTANGIBLE ASSETS:
		As of December 31,
	(in millions)	2013			2012
	Mining concessions	$	121.2		$	121.2
	Mine engineering and development studies	6			6
	Software	12.2			8.9
		139.4			136.1
	Accumulated amortization	(46.2		)	(43.8		)
	Goodwill	17			17
	Intangible assets, net	$	110.2		$	109.3
	Amortization of intangibles in the last three years and estimated amortization are as follows (in millions):
	Amortization expense:
	2013	$	2.4
	2012	$	2.2
	2011	$	2.1
	Estimated amortization expense:
	2014-2018	$	9.1
	Average annual	$	1.8
	The goodwill was generated in 1997 as a result of purchasing a third party interest in the Buenavista mine.

INCOME_TAXES

INCOME TAXES:	12 Months Ended
	Dec. 31, 2013
INCOME TAXES:	'
INCOME TAXES:	'
	NOTE 7-INCOME TAXES:
	The components of the provision for income taxes are as follows:
		Years ended December 31,
	(in millions)	2013			2012			2011
	U.S. federal and state:
	Current	$	—		$	(0.1	)	$	(2.4	)
	Deferred	(139.3		)	(108.6		)	(45.3		)
	Uncertain tax positions	—			147.4			(0.4		)
		(139.3		)	38.7			(48.1		)
	Foreign (Peru and Mexico):
	Current	866.3			1,025.10			1,238.70
	Deferred	42.3			17.1			(86.3		)
		908.6			1,042.20			1,152.40
	Total provision for income taxes	$	769.3		$	1,080.90		$	1,104.30
	The source of income is as follows:
		For the years ended December 31,
	(in millions)	2013			2012			2011
	Earnings by location:
	U.S.	$	0.1		$	(0.1	)	$	(1.1	)
	Foreign
	Peru	773.8			846			1,351.90
	Mexico	1,598.70			2,127.60			2,097.90
		2,372.50			2,973.60			3,449.80
	Earnings before taxes on income	$	2,372.60		$	2,973.50		$	3,448.70
	The reconciliation of the statutory income tax rate to the effective tax rate is as follows (in percentage points):
		For the years ended December 31,
		2013		2012		2011
	Expected tax	30	%	30	%	30	%
	Effect of income taxed at a rate other than the statutory rate	1.7		1.6		4.3
	Percentage depletion	(5.0	)	(4.2	)	(4.0	)
	Other permanent differences	3.5		3.7		1.2
	Peru tax on net income deemed distributed	1.2		1.3		1.3
	Special mining tax	2		1.6		0.5
	Increase (decrease) in unrecognized tax benefits for uncertain tax positions	—		5		—
	Repatriated foreign earnings	(1.4	)	(1.7	)	2.1
	Amounts (over) / under provided in prior years	0.4		(0.6	)	(3.5	)
	Other	—		(0.4	)	0.1
	Effective income tax rate	32.4	%	36.3	%	32	%
	The Company files income tax returns in three jurisdictions, Peru, Mexico and the United States.  For the three years presented above the statutory income tax rates for Peru and Mexico were 30% and 35% for the United States.   The expected rate used above is the statutory tax rate for Peru and Mexico.
	The Company uses the Peruvian and Mexican income tax rate of 30% for this tax rate reconciliation because it is the largest component of tax expense for each of the three years presented.  For all of the years presented, both the Peruvian branch and Minera Mexico filed separate tax returns in their respective tax jurisdictions.  Although the tax rules and regulations imposed in the separate tax jurisdictions may vary significantly, similar permanent items exist, such as items which are nondeductible or nontaxable.  Some permanent differences relate specifically to SCC such as the allowance in the United States for percentage depletion.  SCC’s taxable income for the fiscal years 2011 through 2013, was, or will be, included in the U.S. federal income tax return of AMC, its parent company; see U.S tax matters, below. For financial reporting and presentation purposes SCC is providing current and deferred income taxes, as if it remains a separate U.S. tax filer apart from AMC.
	Deferred taxes include the U.S., Peruvian and Mexican tax effects of the following types of temporary differences and carryforwards:
		As of December 31,
	(in millions)	2013			2012
	Assets:
	Inventories	$	18.7		$	23.6
	Capitalized exploration expenses	29.4			24.4
	U.S. foreign tax credit carryforward	280			202.3
	U.S tax effect of Peruvian deferred tax liability	68			33.4
	Reserves	35			77.5
	Mexican tax loss carryforward	—			26.9
	Labor share buyback	—			30
	Other	27.9			32.6
	Total deferred tax assets	459			450.7
	Liabilities:
	Property, plant and equipment	(105.8		)	(125.0		)
	Deferred charges	(79.6		)	(81.6		)
	Mexican tax on consolidated dividends	(31.5		)	(34.6		)
	Outside basis difference	(7.4		)	(41.3		)
	Other	(0.1		)	(0.5		)
	Total deferred tax liabilities	(224.4		)	(283.0		)
	Total net deferred tax assets / (liabilities)	$	234.6		$	167.7
	U.S. Tax Matters—
	In 2012, $0.9 million of capital loss carryover was utilized and $1.3 million expired. The Company had a full valuation allowance on the capital loss carryforwards.
In September 2013 the Internal Revenue Service (IRS) issued the final Tangible Property Regulations. These regulations are effective January 1, 2014 with some elective retroactive application available.  These regulations look to provide a framework for distinguishing capital expenditures from deductible business expenses and they attempt to find the middle ground where taxpayers and the IRS often disagreed.   The Company has reviewed these regulations and has concluded that they should not have a material effect on its financial statements.
As of December 31, 2013, the Company considers its ownership of the stock of Minera Mexico to be essentially permanent in duration.  The excess of the amount for financial reporting over the tax basis of the investment in this stock is estimated to be at least $4.4 billion.
The Company has provided a deferred tax liability of $7.4 million as of December 31, 2013 for the U.S. income tax effects of $76.2 million of foreign earnings that may potentially be repatriated in the future from Minera Mexico.
At December 31, 2013, there were $280.0 million of foreign tax credits available for carryback or carryforward.  These credits have a one year carryback and a ten year carryforward period and can only be used to reduce U.S. income tax on foreign earnings.  There were no other unused U.S. tax credits at December 31, 2013.  These credits expire as follows:
Year	Amount
2016	$	19
2018	70.5
2020	27.9
2021	11.7
2022	84.1
2023	66.8
Total	$	280
These foreign tax credits are presented on a gross basis and have not been reduced here for any unrecognized tax benefits. ASU No. 2013-11, “Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists” is effective prospectively for the Company’s fiscal year beginning January 1, 2014.
Since March 2009, Grupo Mexico, through its wholly-owned subsidiary AMC, owns an interest in excess of 80% of SCC.  Accordingly, SCC’s results are included in the consolidated results of the Grupo Mexico subsidiary for U.S. federal income tax reporting.  SCC provides current and deferred income taxes, as if it were filing a separate income tax return.
Peruvian Tax Matters-
The Company obtains income tax credits in Peru for value-added taxes paid in connection with the purchase of goods and services employed in its operations and capital equipment and records these credits as a prepaid expense.  Under current Peruvian law, the Company is entitled to use the credits against its Peruvian income tax liability or to receive a refund.  The carrying value of these Peruvian tax credits approximates their net realizable value.
Special Mining tax: In September 2011, the Peruvian government enacted a new tax for the mining industry.  This tax is based on operating income and its rate ranges from 2% to 8.4%.  It begins at 2% for operating income margin up to 10% and increases by 0.4% of operating income for each additional 5% of operating income until 85% of operating income is reached. The Company made provision for this tax of $25.5 million, $49.6 million and $16.4 million in 2013, 2012 and 2011, respectively.  These provisions are included as “income taxes” in the consolidated statement of earnings.
Mexican Tax Matters-
In 2013, the Mexican Congress enacted tax law changes that become effective on January 1, 2014. Among others, this new law: i) establishes a mining royalty at the rate of 7.5% on taxable EBITDA and an additional royalty of 0.5% over gross income from sales of gold, silver and platinum; ii) establishes that exploration expenses will be depreciated at 10% per year instead of the 100% that was applied until 2013; iii) replaces the consolidation tax regime and creates a more restrictive tax consolidation regimen; iv) establishes a 10% withholding on dividends distributed to Mexican individuals or foreign residents (individuals or corporations) and applies to net income generated after 2013; v) limits (at 47 or 53%) deductions for tax-exempt salaries as well as for contributions to pension plans; vi) maintains the Mexican statutory income tax rate at 30% thereby eliminating the scheduled reductions for 2014 and 2015; and vii) eliminates the flat tax.
Related to these tax changes, in 2013 the Company recognized a deferred income tax charge of $34.7 million.
Accounting for Uncertainty in Income Taxes-
The total amount of unrecognized tax benefits in 2013, 2012 and 2011, was as follows (in millions):
	2013			2012			2011
Unrecognized tax benefits, opening balance	$	221.2		$	70.6		$	75.7
Gross increases — tax positions in prior period	—			39.7			21.6
Gross decreases — tax positions in prior period	—			0.2			(26.8		)
Gross increases — current-period tax positions	—			110.7			0.1
	—			150.6			(5.1		)
Unrecognized tax benefits, ending balance	$	221.2		$	221.2		$	70.6
The amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate was $221.2 million at December 31, 2013 and 2012.  These amounts relate entirely to U.S. income tax matters.  The Company has no unrecognized Peruvian or Mexican tax benefits.
As of December 31, 2013 and 2012, the Company’s liability for uncertain tax positions included no amount for accrued interest and penalties due to the excess foreign tax credits.
The following tax years remain open to examination and adjustment in the Company’s three major tax jurisdictions:
Peru:	2009 up to 2013 (years 2009 and 2010 are being examined in 2014).
U.S.:	2008 and all subsequent years
Mexico:	2007 and all subsequent years
Management does not expect that any of the open years will result in a cash payment within the upcoming twelve months ending December 31, 2014.  The Company’s reasonable expectations about future resolutions of uncertain items did not materially change during the year ended December 31, 2013.

WORKERS_PARTICIPATION

WORKERS' PARTICIPATION:	12 Months Ended
	Dec. 31, 2013
WORKERS' PARTICIPATION:	'
WORKERS' PARTICIPATION:	'
	NOTE 8-WORKERS’ PARTICIPATION:
	The Company’s operations in Peru and Mexico are subject to statutory workers’ participation.
	In Peru, the provision for workers’ participation is calculated at 8% of pre-tax earnings.  The current portion of this participation, which is accrued during the year, is based on Peruvian Branch’s taxable income and is distributed to workers following determination of final results for the year.  The annual amount payable to an individual worker is capped at the worker’s salary for an 18 month period.  Amounts determined in excess of the 18 months of worker’s salary is no longer made as a payment to the worker and is levied first for the benefit of the “Fondo Nacional de Capacitacion Laboral y de Promocion del Empleo” (National Workers’ Training and Employment Promotion Fund) until this entity receives from all employers in its region an amount equivalent to 2,200 Peruvian taxable units (approximately $2.9 million in 2013).  Any remaining excess is levied as payment for the benefit of the regional governments.  These levies fund worker training, employment promotion, road infrastructure and other government programs.
	In Mexico, workers’ participation is determined using the guidelines established in the Mexican income tax law at a rate of 10% of pre-tax earnings as adjusted by the tax law. In December 2013, the Mexican Congress approved some amendments to the tax law, as a consequence, the Company recorded a deferred workers’ participation provision of $16.3 million.
	The provision for workers’ participation is allocated to “Cost of sales (exclusive of depreciation, amortization and depletion)” and to “selling, general and administrative” in the consolidated statement of earnings, proportional to the number of workers in the production and administrative areas, respectively.  Workers’ participation expense for the three years ended December 31, 2013 was as follows (in millions):
		2013		2012		2011
	Current	$	201.6	$	263.1	$	274.7
	Deferred	31.4		14.3		(18.0		)
		$	233	$	277.4	$	256.7

ASSET_RETIREMENT_OBLIGATION

ASSET RETIREMENT OBLIGATION:	12 Months Ended
	Dec. 31, 2013
ASSET RETIREMENT OBLIGATION:	'
ASSET RETIREMENT OBLIGATION:	'
	NOTE 9-ASSET RETIREMENT OBLIGATION:
	The Company maintains an estimated asset retirement obligation for its mining properties in Peru, as required by the Peruvian Mine Closure Law.  In accordance with the requirements of this law, the Company’s closure plans were approved by MINEM.  As part of the closure plans, commencing in January 2010 and, as amended in 2012, the Company is required, under its approved closure plans, to provide annual guarantees over the estimated life of the mines, based on a present value approach, and to furnish the funds for the asset retirement obligation.  This law requires reviews of closing plans every five years.  Currently and for the near-term future, the Company has pledged the value of its Lima office complex as support for this obligation.  The accepted value of the Lima office building, for this purpose, is $27.8 million.  Through January 2014, the Company has provided guarantees of $14.2 million.  The closure cost recognized for this liability includes the cost, as outlined in its closure plans, of dismantling the Toquepala and Cuajone concentrators, the smelter and refinery in Ilo, and the shops and ancillary facilities at the three units, including the Ilo marine trestle.  In the last quarter of 2012, the Company submitted updates to the closure plans for Toquepala, Cuajone and Ilo in accordance with the law. As a result of these revised plans, the Company adjusted its asset retirement obligation.
	In 2012, the Company decided to recognize an estimated asset retirement obligation for its mining properties in Mexico as part of its environmental commitment.  Even though, there is currently no enacted law, statute, ordinance, or written or oral contract requiring the Company to carry out mine closure and environmental remediation activities, the Company considers that a constructive obligation presently exists based on, among other things, the remediation caused by the closure of the San Luis Potosi smelter in 2010.  Consequently, according to ASC- 410-20 on December 31, 2012 the Company recorded an asset retirement obligation of $25.1 million and increased net property by $20.3 million. The overall cost recognized for mining closure includes the estimated costs of dismantling concentrators, smelter and refinery plants, shops and other facilities.
	The following table summarizes the asset retirement obligation activity for the two years ended December 31, 2013 and 2012 (in millions):
		2013			2012
	Balance as of January 1	$	118.2		$	62
	Changes in estimates	—			27.4
	Additions	—			25.1
	Closure payments	(1.5		)	(0.3		)
	Accretion expense	8.1			4
	Balance as of December 31,	$	124.8		$	118.2

FINANCING

FINANCING:	12 Months Ended
	Dec. 31, 2013
FINANCING:	'
FINANCING:	'
	NOTE 10-FINANCING:
	Long-term debt:
		Issuance			Face		As of December 31,
	(in millions)	Date		Due Date	amount		2013		2012
	1.763% Mitsui credit agreement	1999		2013	$	100	$	—	$	10
	6.375% Senior unsecured notes	2005		2015	200		199.7		199.6
	5.375% Senior unsecured notes	2010		2020	400		398.6		398.4
	3.500% Senior unsecured notes	2012		2022	300		299.1		299
	9.250% Yankee Bonds	1998		2028	125		51.1		51.1
	7.500% Senior unsecured notes	2005/2006		2035	1,000		985.5		985.3
	6.750% Senior unsecured notes	2010		2040	1,100		1,092.10		1,092.00
	5.250% Senior unsecured notes	2012		2042	1,200		1,178.80		1,178.50
	Total debt						4,204.90		4,213.90
	Less, current portion						—		(10.0		)
	Total long-term debt						$	4,204.90	$	4,203.90
	The difference between the face amount and the balance as of December 31, 2013 and 2012 of the senior unsecured notes is the unamortized issuance discount, which is being amortized over the term of the related debt.
	The bonds, referred above as “Yankee bonds”, contain a covenant requiring Minera Mexico to maintain a ratio of EBITDA to interest expense of not less than 2.5 to 1.0 as such terms are defined in the debt instrument.  At December 31, 2013, Minera Mexico was in compliance with this covenant.
	The Mitsui credit agreement which was collateralized by pledges of receivables on 31,000 tons of copper per year was fully repaid in December 31, 2013.
	Between July 2005 and November 2012 the Company issued senior unsecured notes six times totaling $4.2 billion as listed above. Interest on the notes is paid semi-annually in arrears. The notes rank pari passu with each other and rank pari passu in right of payment with all of the Company’s other existing and future unsecured and unsubordinated indebtedness.
	The indentures relating to the notes contain certain restrictive covenants, including limitations on liens, limitations on sale and leaseback transactions, rights of the holders of the notes upon the occurrence of a change of control triggering event, limitations on subsidiary indebtedness and limitations on consolidations, mergers, sales or conveyances.  Certain of these covenants cease to be applicable before the notes mature if the Company obtains an investment grade rating. The Company obtained investment grade rating in 2005. The Company has registered these notes under the Securities Act of 1933, as amended. The Company may issue additional debt from time to time pursuant to certain of the indentures.
	Related to these notes, the Company capitalized $28.9 million of issuance costs which unamortized balance is included in “Other assets”, non-current on the consolidated balance sheet and are being amortized as interest expense over the life of the loans. At December 31, 2013 and 2012, the balance of capitalized debt issuance costs was $26.1 million and $25.9 million, respectively.  Amortization charged to interest expense was $1.9 million, $1.3 million and $0.5 million in 2013, 2012 and 2011, respectively.
	The net proceeds from the issuance and sale of the July 2005 notes were principally used to repay outstanding indebtedness of the Company and the balance was used for general corporate purposes. Net proceeds from the other notes were used for general corporate purposes, including the financing of the Company’s capital expenditure program.
	If the Company experiences a Change of Control Triggering Event, the Company must offer to repurchase the notes at a purchase price equal to 101% of the principal amount thereof, plus accrued and unpaid interest, if any.  A Change of Control Trigger Event means a Change of Control (as defined) and a rating decline (as defined), that is, if the rating of the notes, by at least one of the rating agencies shall be decreased by one or more gradations.
	At December 31, 2013, the Company was in compliance with the covenants of the notes.
	Aggregate maturities of the outstanding borrowings at December 31, 2013, are as follows:
	Years	Principal Due (*)
		(in millions)
	2014	—
	2015	$	200
	2016	—
	2017	—
	Thereafter	4,051.20
	Total	$	4,251.20
	(*)Total debt maturities do not include the debt discount valuation account of $46.3 million.
	At December 31, 2012 other assets included $5.1 million held in escrow accounts as required by the Mitsui’s loan agreement.  The funds were released from escrow since the loan was paid in December 2013.

BENEFIT_PLANS

BENEFIT PLANS:	12 Months Ended
	Dec. 31, 2013
BENEFIT PLANS:	'
BENEFIT PLANS:	'
	NOTE 11-BENEFIT PLANS:
	Post retirement defined benefit plan:
	The Company has two noncontributory defined benefit pension plans covering former salaried employees in the United States and certain former expatriate employees in Peru (the “Expatriate Plan”). Effective October 31, 2000, the Board of Directors amended the qualified pension plan to suspend the accrual of benefits.
	In addition, the Company´s Mexican subsidiaries have a defined contribution benefit pension plan for salaried employees and a non-contributory defined benefit pension plan for union employees (The “Mexican Plan”). These plans are in addition to benefits granted by the Mexican Institute of Social Security.
	The components of net periodic benefit costs calculated in accordance with ASC 715 “Compensation retirement benefits,” using December 31 as a measurement date, consist of the following:
		Years ended December 31,
	(in millions)	2013			2012			2011
	Service cost	$	1.1		$	1		$	0.9
	Interest cost	1			1.1			1.2
	Expected return on plan assets	(3.4		)	(3.6		)	(3.5		)
	Amortization of transition assets, net	—			—			(0.1		)
	Amortization of net actuarial loss	(0.7		)	(0.8		)	(1.3		)
	Amortization of net loss/(gain)	0.2			0.1			0.1
	Net periodic benefit cost	$	(1.8	)	$	(2.2	)	$	(2.7	)
	The change in benefit obligation and plan assets and a reconciliation of funded status are as follows:
		As of December 31,
	(in millions)	2013			2012
	Change in benefit obligation:
	Projected benefit obligation at beginning of year	$	27.9		$	25.2
	Service cost	1.1			1
	Interest cost	1			1.1
	Actuarial gain census	(0.3		)	(0.1		)
	Benefits paid	(2.2		)	(2.0		)
	Actuarial (gain)/loss	0.3			1
	Actuarial gain assumption changes	(1.0		)	0.8
	Inflation adjustment	—			0.9
	Projected benefit obligation at end of year	$	26.8		$	27.9
	Change in plan assets:
	Fair value of plan assets at beginning of year	$	61.9		$	55.8
	Actual return on plan assets	(0.2		)	4.9
	Employer contributions	0.1			(0.6		)
	Benefits paid	(0.9		)	(1.1		)
	Currency exchange rate adjustment	(0.3		)	2.9
	Fair value of plan assets at end of year	$	60.6		$	61.9
	Funded status at end of year:	$	33.8		$	34
	ASC-715 amounts recognized in statement of financial position consists of:
	Non-current assets	$	33.8		$	34
	Total	$	33.8		$	34
	ASC-715 amounts recognized in accumulated other comprehensive income (net of income taxes of $1.5 million and $2.9 million in 2013 and 2012, respectively) consists of:
	Net loss (gain)	$	(1.7	)	$	(3.7	)
	Prior service cost		0.1			0.1
	Total	$	(1.6	)	$	(3.6	)
	The following table summarizes the changes in accumulated other comprehensive income for the years ended December 31, related to the defined benefit pension plan, net of income tax:
	(in millions)	2013			2012
	Reconciliation of accumulated other comprehensive income:
	Accumulated other comprehensive income at beginning of plan year	$	(3.6	)	$	(3.8	)
	Net loss/(gain) amortized during the year	0.4			0.5
	Net loss/(gain) occurring during the year	1.5			0.3
	Currency exchange rate adjustment	0.1			(0.6		)
	Net adjustment to accumulated other comprehensive income (net of income taxes of $(1.3) million and $(0.5) million in 2013 and 2012, respectively)	2			0.2
	Accumulated other comprehensive income at end of plan year	$	(1.6	)	$	(3.6	)
	The following table summarizes the amounts in accumulative other comprehensive income amortized and recognized as a component of net periodic benefit cost in 2013 and 2012, net of income tax:
	(in millions)	2013			2012
	Net loss / (gain)	$	1.5		$	0.3
	Amortization of net (loss) gain	0.4			0.5
	Total amortization expenses	$	1.9		$	0.8
	The assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost in the ensuing year are:
		2013		2012		2011
	Expatriate Plan
	Discount rate	4.25	%	3.35	%	3.95	%
	Expected long-term rate of return on plan asset	4.5	%	4.5	%	4.5	%
	Rate of increase in future compensation level	N/A		N/A		N/A
		2013		2012		2011
Mexican Plan(*)
Discount rate	7.1	%	6.5	%	7.5	%
Expected long-term rate of return on plan asset	7.1	%	6.5	%	7.5	%
Rate of increase in future compensation level	4	%	4	%	4.5	%
(*)These rates are based on Mexican pesos as pension obligations are denominated in pesos.
The scheduled maturities of the benefits expected to be paid in each of the next five years, and thereafter, are as follows:
Years	Expected
	Benefit Payments
	(in millions)
2014	$	1.7
2015	1.3
2016	1.3
2017	1.3
2018	1.3
2019 to 2023	7.4
Total	$	14.3
Expatriate Plan
The Company’s funding policy is to contribute amounts to the qualified plan sufficient to meet the minimum funding requirements set forth in the Employee Retirement Income Security Act of 1974 plus such additional amounts as the Company may determine to be appropriate.  Plan assets are invested in stock and bond funds.
Plan assets are invested in a group annuity contract (the “Contract”) with Metropolitan Life Insurance Company (“MetLife”).  The Contract invests in the MetLife Broad Market Bond Fund (the “Bond Fund”) managed by BlackRock, Inc. (“BlackRock”), and the MetLife General Account Payment Fund (the “Money Fund”).
The Money Fund seeks to maximize current income to the extent consistent with preservation of capital and liquidity and the maintenance of a stable $1.00 per share net asset value, by investing in U.S. Dollar-denominated money market securities.  The Bond Fund seeks to outperform the Barclays ® U.S. Aggregate Bond Index, net of fees, over a full market cycle.  The Bond Fund invests in publicly traded, investment grade securities with a target duration within one and a half years of the Barclays ® U.S. Aggregate Bond Index.
The investment allocation decisions within the Funds, as reported to the Company by BlackRock effective December 31, 2013, were as follows:
With respect to the Bond Fund, its interest rate/yield curve position moved from neutral to short duration during the year.  Within Treasuries/Agencies, BlackRock is overweight 5- and 10-year breakevens.  Within Mortgages, BlackRock has a small overweight concentrated in Fannie 30-year 4.0% coupons versus 5- and 10-year Treasuries.
Within the Commercial Mortgage-Backed Securities (CMBS) sector, BlackRock maintained an overweight position to CMBS. BlackRock continues to favor liquid high-quality paper.  Within Credit, BlackRock increased its underweight position. Credit remains its largest underweight and is concentrated in industrials versus financials.
Within the Asset-Backed Securities (ABS) sector, BlackRock maintains its overweight.  BlackRock continues to hold subprime autos. Within the remaining sub-sectors, BlackRock favors Federal Family Education Loan Program student loans, servicer advances and dollar denominated senior UK Residential Mortgage-Backed Securities.
The Company’s policy for determining asset mix-targets includes periodic consultation with recognized third party investment consultants.  The expected long-term rate of return on plan assets is updated periodically, taking into consideration asset allocations, historical returns and the current economic environment.  Based on these factors the Company expects its assets will earn an average of 4.50% per annum assuming its long-term mix will be consistent with its current mix and an assumed discount rate of 4.25%.  The fair value of plan assets is impacted by general market conditions.  If actual returns on plan assets vary from the expected returns, actual results could differ.
Mexican Plan
Minera Mexico’s policy for determining asset mix targets includes periodic consultation with recognized third party investment consultants.  The expected long-term rate of return on plan assets is updated periodically, taking into consideration assets allocations, historical returns and the current economic environment.  The fair value of plan assets is impacted by general market conditions.  If actual returns on plan assets vary from the expected returns, actual results could differ.
The plan assets are managed by three financial institutions, Scotiabank Inverlat S.A., Banco Santander and IXE Banco, S.A.  26% of the funds are invested in Mexican government securities, including treasury certificates and development bonds of the Mexican government.  The remaining 74% is invested in common shares of Grupo Mexico.
The plan assets are invested without restriction in active markets that are accessible when required and are therefore considered as level 1, in accordance with ASC 820.
These plans accounted for approximately 30% of benefit obligations.  The following table represents the asset mix of the investment portfolio as of December 31:
	2013		2012
Asset category:
Equity securities	74	%	73	%
Treasury bills	26	%	27	%
	100	%	100	%
The amount of contributions that the Company expects to pay to the plan during 2014 is $2.4 million.
Post-retirement Health Care Plan
Former Peruvian and U.S. expatriate employees: The Company adopted the post-retirement health care plan for retired salaried employees eligible for Medicare on May 1, 1996 (The Expatriate Health Plan”).  The plan is unfunded.
Effective October 31, 2000, the health care plan for retirees was terminated and the Company informed retirees that they would be covered by the then in effect post-retirement health care plan of Asarco, a former shareholder of the Company and a subsidiary of Grupo Mexico, which offered substantially the same benefits and required the same contributions.  Asarco is no longer managing the plan.  The Company has assumed management of the plan and is currently providing health benefits to retirees.  The plan is accounted for in accordance with ASC 715 “Compensation retirement benefits.”
Mexican Health Plan: Through 2007, the Buenavista unit provided health care services free of charge to employees and retired unionized employees and their families through its own hospital at the Buenavista unit.  In 2011, the Company signed an agreement with the Secretary of Health of the State of Sonora to provide these services to its retired workers and their families at a lower cost for the Company but still free of charge to the retired workers. As a result of the cost savings, the plan value and the cost of the net periodic benefits have been reduced and are included in the activity in the following tables.
The components of net period benefit costs are as follows:
	Years ended December 31,
(in millions)	2013			2012			2011
Service cost	$	—		$	—		$	—
Interest cost	1.7			1.5			3.3
Amortization of transition obligation	—			—			1.3
Amortization of prior service cost/ (credit)	—			(0.3		)	(10.0		)
Net periodic benefit cost	$	1.7		$	1.2		$	(5.4	)
The change in benefit obligation and a reconciliation of funded status are as follows:
	As of December 31,
(in millions)	2013			2012
Change in benefit obligation:
Projected benefit obligation at beginning of year	$	27.2		$	20.3
Interest cost	1.7			1.5
Actuarial loss/ (gain) — claims cost	—			(0.2		)
Benefits paid	(0.1		)	(1.5		)
Actuarial (gain)/loss	(6.8		)	5.6
Actuarial gain assumption changes	(0.2		)	0.1
Inflation adjustment	(0.1		)	1.4
Projected benefit obligation at end of year	$	21.7		$	27.2
Change in plan assets:
Fair value of plan assets at beginning of year	$	—		$	—
Employer contributions	0.1			0.1
Benefits paid	(0.1		)	(0.1		)
Fair value of plan assets at end of year	$	—		$	—
Funded status at end of year:	$	(21.7	)	$	(27.2	)
ASC-715 amounts recognized in statement of financial position consists of:
Current liabilities	$	(0.1	)	$	(0.1	)
Non-current liabilities	(21.6		)	(27.1		)
Total	$	(21.7	)	$	(27.2	)
ASC-715 amounts recognized in accumulated other comprehensive income consists of:
Net loss (gain)	$	(4.3	)	$	(0.1	)
Prior service cost (credit)	(0.1		)	(0.1		)
Total (net of income taxes of $ 3.0 million and $0.2 million in 2013 and 2012, respectively)	$	(4.4	)	$	(0.2	)
The following table summarizes the changes in accumulated other comprehensive income for the years ended December 31, related to the post-retirement health care plan, net of income tax:
	As of December 31,
(in millions)	2013			2012
Reconciliation of accumulated other comprehensive income:
Accumulated other comprehensive income at beginning of plan year	$	(0.3	)	$	(3.4	)
Net loss/(gain) occurring during the year	(4.1		)	3.2
Amortization of transition obligation	—			0.2
Currency exchange rate adjustment	—			(0.3		)
Net adjustment to accumulated other comprehensive income (net of income taxes of $ 2.8 million and $(2.4) million in 2013 and 2012, respectively)	(4.1		)	3.1
Accumulated other comprehensive income at end of plan year	$	(4.4	)	$	(0.3	)
The following table summarizes the amounts in accumulative other comprehensive income amortized and recognized as a component of net periodic benefit cost in 2013 and 2012, net of income tax:
	As of December 31,
(in millions)	2013			2012
Net loss / (gain)	$	(4.1	)	$	3.2
Amortization of transition obligation	—			0.2
Total amortization expenses	$	(4.1	)	$	3.4
The discount rates used in the calculation of other post-retirement benefits and cost as of December 31 were:
	2013		2011		2010
Expatriate health plan
Discount rate	4.25	%	3.35	%	3.95	%
Mexican health plan
Weighted average discount rate	7.1	%	6.5	%	7.5	%
The benefits expected to be paid in each of the next five years, and thereafter, are as follows:
Year	Expected
	Benefit Payments
	(in millions)
2014	$	1.4
2015	1.5
2016	1.6
2017	1.7
2018	1.8
2019 to 2023	10.5
Total	$	18.5
Expatriate Health Plan:
For measurement purposes, a 6.0% annual rate of increase in the per capita cost of covered health care benefits was assumed for 2013. The rate is assumed to decrease gradually to 4.6%.
Assumed health care cost trend rates can have a significant effect on amounts reported for health care plans.  However, because of the size of the Company’s plan, a one percentage-point change in assumed health care trend rate would not have a significant effect.
Mexican Health Plan
For measurement purposes, a 4.0% annual rate of increase in the per capita cost of covered health care benefits was assumed for 2013 and remains at that level thereafter.
An increase in other benefit cost trend rates have a significant effect on the amount of the reported obligations, as well as component cost of the other benefit plan.  One percentage-point change in assumed other benefits cost trend rates would have the following effects:
	One Percentage Point
(in millions)	Increase			Decrease
Effect on total service and interest cost components	$	1.4		$	1.3
Effect on the post-retirement benefit obligation	$	18.1		$	22.4

NONCONTROLLING_INTEREST

NON-CONTROLLING INTEREST:	12 Months Ended
	Dec. 31, 2013
NON-CONTROLLING INTEREST:	'
NON-CONTROLLING INTEREST:	'
	NOTE 12-NON-CONTROLLING INTEREST:
	For all the years presented, in the consolidated statement of earnings the income attributable to non-controlling interest is based on the earnings of the Company’s Peruvian Branch.
	The non-controlling interest of the Company’s Peruvian Branch is for investment shares, formerly named labor shares.  These shares were generated by legislation in place in Peru from the 1970s through 1991; such legislation provided for the participation of mining workers in the profits of the enterprises for which they worked.  This participation was divided between equity and cash.  The investment shares included in the non-controlling interest on the balance sheet are the still outstanding equity distributions made to the Peruvian Branch’s employees.
	In prior years the Company acquired some Peruvian investment shares in exchange for newly issued common shares of the Company and through purchases at market value.  These acquisitions were accounted for as purchases of non-controlling interests.  The excess paid over the carrying value was assigned to intangible assets and is being amortized based on production.  As a result of these acquisitions, the remaining investment shareholders hold a 0.71% interest in the Peruvian Branch and are entitled to a pro rata participation in the cash distributions made by the Peruvian Branch.  The shares are recorded as a non-controlling interest in the Company’s financial statements.

COMMITMENTS_AND_CONTINGENCIES

COMMITMENTS AND CONTINGENCIES:	12 Months Ended
	Dec. 31, 2013
COMMITMENTS AND CONTINGENCIES:	'
COMMITMENTS AND CONTINGENCIES:	'
	NOTE 13-COMMITMENTS AND CONTINGENCIES:
	Environmental matters:
	The Company has instituted extensive environmental conservation programs at its mining facilities in Peru and Mexico.  The Company’s environmental programs include, among other features, water recovery systems to conserve water and minimize impact on nearby streams, vegetation programs to stabilize the surface of the tailings dumps and the implementation of scrubbing technology in the mines to reduce dust emissions.
	Environmental capital expenditures in years 2013, 2012 and 2011, were as follows (in millions):
		2013		2012		2011
	Peruvian operations	$	20.9	$	6.7	$	2.5
	Mexican operations	39.8		20.7		11.5
	Total	$	60.7	$	27.4	$	14
	Peruvian operations: The Company’s operations are subject to applicable Peruvian environmental laws and regulations.  The Peruvian government, through the Environmental Ministry conducts annual audits of the Company’s Peruvian mining and metallurgical operations.  Through these environmental audits, matters related to environmental commitments, compliance with legal requirements, atmospheric emissions, effluent monitoring and waste management are reviewed.  The Company believes that it is in material compliance with applicable Peruvian environmental laws and regulations.
	Peruvian law requires that companies in the mining industry provide assurance for future closure and reclamation.  In accordance with the requirements of this law the Company’s closure plans were approved by MINEM.  As part of the closure plans, the Company is providing guarantees to ensure that sufficient funds will be available for the asset retirement obligation.  See Note 9, “Asset retirement obligation,” for further discussion of this matter.
	In 2008, the Peruvian government enacted environmental regulations establishing more stringent air quality standards (“AQS”) for daily sulfur dioxide (“SO2”) concentration for the Peruvian territory.
	These regulations, as amended in 2013, recognize distinct zones/areas, such as atmospheric basins, with significant population density and industrial activity.  As part of these regulations the Ministry of Environment (MINAM) was required to carry-out a 12 month ambient air monitoring period, prior to January 1, 2014, to establish SO2 levels. Those areas with a mean 24-hour concentration of SO2 equal or less than 20 micrograms per cubic meter (“ug/m3”) are required to develop programs to maintain this level of compliance.  Those areas or cities which are in excess of the mean 24-hour SO2 concentration equal to 20 ug/m3 will be required to establish an Action Plan to address this problem and are required to achieve the 20 ug/m3 AQS in the future and meanwhile they are required to achieve mean 24-hour AQS equal to 80 ug/m3 of SO2.  MINAM has established three atmospheric basins that require further attention to comply with these new air quality standards. The Ilo basin is one of these three areas and the Company’s smelter and refinery are part of the area.  The Company expects to join the local government of Ilo, other industries and stakeholders in the Ilo basin to develop the action plan and evaluate alternatives and their feasibility in order to achieve these new AQS.
	In 2013, the Peruvian government enacted new soil environmental quality standards applicable to any existing facility or project that generates or could generate risk of soil contamination in its area of operation or influence.  The rule applies to any existing facility or project and requires the Company to report a soil testing analysis.  The rule requires the Company to report the results to the authorities. If the results identify any contamination, the Company must prepare a soil decontamination plan that should be completed in three years.  The Company will have twelve months after the issuance of the regulations to update its approved environmental programs to comply with the requirements of the rule.  The Company is waiting the complementary regulations to this rule in order to determine its financial impact.
	Mexican operations: The Company’s operations are subject to applicable Mexican federal, state and municipal environmental laws, to Mexican official standards, and to regulations for the protection of the environment, including regulations relating to water supply, water quality, air quality, noise levels and hazardous and solid waste.
	The principal legislation applicable to the Company’s Mexican operations is the Federal General Law of Ecological Balance and Environmental Protection (the “General Law”), which is enforced by the Federal Bureau of Environmental Protection (“PROFEPA”). PROFEPA monitors compliance with environmental legislation and enforces Mexican environmental laws, regulations and official standards. PROFEPA may initiate administrative proceedings against companies that violate environmental laws, which in the most extreme cases may result in the temporary or permanent closing of non-complying facilities, the revocation of operating licenses and/or other sanctions or fines. Also, according to the federal criminal code, PROFEPA must inform corresponding authorities regarding environmental non-compliance.
	In January 2011, Article 180 of the General Law was amended. This amendment, gives an individual or entity the ability to contest administrative acts, including environmental authorizations, permits or concessions granted, without the need to demonstrate the actual existence of harm to the environment, natural resources, flora, fauna or human health, because it will be sufficient to argue that the harm may be caused.  In addition in 2011, amendments to the Civil Federal Procedures Code (“CFPC”) were published in the Official Gazette and are now in force. These amendments establish three categories of collective actions, by means of which 30 or more people claiming injury derived from environmental, consumer protection, financial services and economic competition issues will be considered to be sufficient in order to have a legitimate interest to seek through a civil procedure restitution or economic compensation or suspension of the activities from which the alleged injury derived. The amendments to the CFPC may result in more litigation, with plaintiffs seeking remedies, including suspension of the activities alleged to cause harm.
	In June 2013, the Environmental Liability Federal Law was published in the Official Gazette and became effective one month thereafter. The law establishes general guidelines in order to determine which environmental actions will be considered to cause environmental harm that will give rise to administrative responsibilities (remediation or compensations) and criminal responsibilities. Also economic fines could be established.
	In March 2010, the Company announced to the Mexican federal environmental authorities the closure of the copper smelter plant at San Luis Potosi. The Company initiated a program for plant demolition and soil remediation with a revised budget of $62.4 million, of which the Company has spent $35.7 million through December 31, 2013.  Plant demolition and construction of a confinement area at the south of the property were completed in 2012 and the Company expects to complete soil remediation and the construction of a second confinement by the end of 2014. The Company expects that once the site is remediated, the Company will decide if it will sell the property or promote an urban development to generate a net gain on the disposal of the property.
	The Company believes that all of its facilities in Peru and Mexico are in material compliance with applicable environmental, mining and other laws and regulations.
	The Company also believes that continued compliance with environmental laws of Mexico and Peru will not have a material adverse effect on the Company’s business, properties, result of operations, financial condition or prospects and will not result in material capital expenditures.
	Litigation matters:
	Peruvian operations
	Garcia Ataucuri and Others against SCC’s Peruvian Branch:
	In April 1996, the Branch was served with a complaint filed in Peru by Mr. Garcia Ataucuri and approximately 900 former employees seeking the delivery of a substantial number of “labor shares” (acciones laborales) plus dividends on such shares, to be issued to each former employee in proportion to their time of employment with SCC’s Peruvian Branch, pursuant to a former Peruvian mandated profit sharing law.
	The labor share litigation is based on claims of former employees for ownership of labor shares that the plaintiffs state that the Branch did not issue during the 1970s until 1979 under the said former Peruvian mandated profit sharing law. In 1971, the Peruvian government enacted legislation providing that mining workers would have a 10% participation in the pre-tax profits of their employing enterprises. This participation was distributed 40% in cash and 60% in an equity interest of the enterprise. In 1978, the equity portion, which was originally delivered to a mining industry workers’ organization, was set at 5.5% of pre-tax profits and was delivered, mainly in the form of “labor shares” to individual workers. The cash portion was set at 4.0% of pre-tax earnings and was delivered to individual employees also in proportion to their time of employment with the Branch. In 1992, the workers’ participation was set at 8%, with 100% payable in cash and the equity participation was eliminated from the law.
	In relation to the issuance of “labor shares” by the Branch in Peru, the Branch is a defendant in the following lawsuits:
	1)             Mr. Garcia Ataucuri seeks delivery, to himself and each of the approximately 900 former employees of the Peruvian Branch, of the 3,876,380,679.65 old soles or 38,763,806.80 “labor shares” (acciones laborales), as required by Decree Law 22333 (a former profit sharing law), to be issued proportionally to each former employee in accordance with the time of employment of such employee with SCC’s Branch in Peru, plus dividends on such shares. The 38,763,806.80 labor shares sought in the complaint, with a face value of 100.00 old soles each, represent 100% of the labor shares issued by the Branch during the 1970s until 1979 for all of its employees during that period. The plaintiffs do not represent 100% of the Branch´s eligible employees during that period.
	It should be noted that the lawsuit refers to a prior Peruvian currency called “sol de oro” or old soles, which was later changed to the “inti”, and then into today´s “nuevo sol.” Due to a past period of high inflation between 1985 and 1990, one billion of old soles is equivalent to today’s one nuevo sol.
	After lengthy proceedings before the civil courts in Peru on September 19, 2001, on appeal by the Branch, the Peruvian Supreme Court annulled the proceedings noting that the civil courts lacked jurisdiction and that the matter had to be decided by a labor court (the “2000 appeal”).
	In October 2007, in a separate proceeding initiated by the plaintiffs, the Peruvian Constitutional Court nullified the September 19, 2001 Peruvian Supreme Court decision and ordered the Supreme Court to decide again on the merits of the case accepting or denying the 2000 appeal.
	In May 2009, the Supreme Court rejected the 2000 appeal of the Branch affirming the adverse decision of the appellate civil court and lower civil court. While the Supreme Court has ordered SCC’s Peruvian Branch to deliver the labor shares and dividends, it has clearly stated that SCC’s Peruvian Branch may prove, by all legal means, its assertion that the labor shares and dividends were distributed to the former employees in accordance with the profit sharing law then in effect, an assertion which SCC’s Peruvian Branch continues to make. None of the court decisions state the manner by which the Branch must comply with the delivery of such labor shares or make a liquidation of the amount to be paid for past dividends and interest, if any.
	On June 9, 2009, SCC’s Peruvian Branch filed a proceeding of relief before a civil court in Peru seeking the nullity of the 2009 Supreme Court decision and, in a separate proceeding, a request for a precautionary measure. The civil court rendered a favorable decision on the nullity and the precautionary measure, suspending the enforcement of the Supreme Court decision, for the reasons indicated above and other reasons. In February 2012, the Branch was notified that the civil court had reversed its prior decisions. On appeal by the Peruvian Branch the Superior Court affirmed the lower court’s decisions regarding the nullity of the 2009 Supreme Court decision and the precautionary measure.  As a result, the nullity of the precautionary measure became final and is not appealable. However, the nullity of the 2009 Supreme Court decision has been appealed by the Branch before the Constitutional Court. As of December 31, 2013 this appeal is pending resolution. In view of this, SCC´s Peruvian Branch continues to analyze the manner in which the Supreme Court decision may be enforced and what financial impact, if any, said decision may have.
	2)             In addition, there are filed against SCC’s Branch the following lawsuits, involving approximately 800 plaintiffs, which seek the same number of labor shares as in the Garcia Ataucuri case, plus interest, labor shares resulting from capital increases and dividends: Armando Cornejo Flores and others v. SCC’s Peruvian Branch (filed May 10, 2006); Alejandro Zapata Mamani and others v. SCC’s Peruvian Branch (filed June 27, 2008); Edgardo Garcia Ataucuri, in representation of 216 of SCC’s Peruvian Branch former workers, v. SCC’s Peruvian Branch (filed May 2011); Juan Guillermo Oporto Carpio v. SCC’s Peruvian Branch (filed August 2011); Rene Mercado Caballero v. SCC’s Peruvian Branch (filed November 2011); Enrique Salazar Alvarez and others v. SCC’s Peruvian Branch (filed December 2011); Indalecio Carlos Perez Cano and others v. SCC Peruvian Branch (filed March 2012); Jesus Mamani Chura and others v. SCC’s Peruvian Branch (filed March 2012); Armando Cornejo Flores, in representation of 37 of SCC’s Peruvian Branch former workers v. SCC’s Peruvian Branch (filed March 2012), Porfirio Ochochoque Mamani and others v. SCC´s Peruvian Branch (filed July 2012); Alfonso Flores Jimenez and others v. SCC’s Peruvian Branch (filed July 2013) and Micaela Laura Alvarez de Vargas and others v. SCC’s Peruvian Branch (filed August 2013). SCC’s Peruvian Branch has answered the complaints and denied the validity of the claims.
	SCC’s Peruvian Branch asserts that the labor shares were distributed to the former employees in accordance with the profit sharing law then in effect. The Peruvian Branch has not made a provision for these lawsuits because it believes that it has meritorious defenses to the claims asserted in the complaints. Additionally, the amount of this contingency cannot be reasonably estimated by management at this time.
	The “Virgen Maria” Mining Concessions of the Tia Maria Mining Project
	The Tia Maria project includes various mining concessions, totaling 32,989.64 hectares.  One of the concessions is the “Virgen Maria” mining concession totaling 943.72 hectares or 2.9% of the total mining concessions.
	Related to the “Virgen Maria” mining concessions, the Company is party to the following lawsuits:
	a)             Exploraciones de Concesiones Metalicas S.A.C. (“Excomet”): In August 2009, a lawsuit was filed against SCC’s Branch by the former stockholders of Excomet.  The plaintiffs allege that the acquisition of Excomet’s shares by the Branch is null and void because the $2 million purchase price paid by the Branch for the shares of Excomet was not fairly negotiated by the plaintiffs and the Branch.  In 2005, the Branch acquired the shares of Excomet after lengthy negotiations with the plaintiffs, and after the plaintiffs, which were all the stockholders of Excomet, approved the transaction in a general stockholders’ meeting.  Excomet was at the time owner of the “Virgen Maria” mining concession.  In October 2011, the civil court dismissed the case on the grounds that the claim had been barred by the statute of limitations.  On appeal by the plaintiffs, the superior court reversed the lower court´s decision.  As of December 31, 2013, the case remains pending without further developments.
	b)             Sociedad Minera de Responsabilidad Limitada Virgen Maria de Arequipa (SMRL Virgen Maria): In August 2010, a lawsuit was filed against SCC’s Branch and others by SMRL Virgen Maria, a company which until July 2003 owned the mining concession Virgen Maria.  SMRL Virgen Maria sold this mining concession in July 2003 to Excomet (see a) above).  The plaintiff alleges that the sale of the mining concession Virgen Maria to Excomet is null and void because the persons who attended the shareholders’ meeting of SMRL Virgen Maria, at which the purchase was agreed upon, were not the real owners of the shares.  The plaintiff is also pursuing the nullity of all the subsequent acts regarding the mining property (acquisition of the shares of Excomet by SCC’s Branch, noted above, and the sale of this concession to SCC’s Branch by Excomet). In October 2011, the civil court dismissed the case on the grounds that the claim had been barred by the statute of limitations.  Upon appeal by the plaintiffs, the superior court remanded the proceedings to the lower court, ordering the issuance of a new decision.  On June 25, 2013, the lower court dismissed the case due to procedural defects. Upon appeal by the plaintiff, on December 2, 2013 the Superior Court reversed the lower court’s decision due to procedural defects and ordered the issuance of a new resolution.  As of December 31, 2013, the case remains pending without further developments.
	c)              Omar Nunez Melgar: In May 2011, Mr. Omar Nunez Melgar commenced a lawsuit against the Peruvian Mining and Metallurgical Institute and MINEM challenging the denial of his request of a new mining concession that conflicted with SCC’s Branch’s Virgen Maria mining concession.  SCC’s Branch has been made a party to the proceedings as the owner of the Virgen Maria concession.  SCC’s Branch has answered the complaint and denied the validity of the claim.  As of December 31, 2013, the case remains pending without further developments.
	The Company asserts that the lawsuits are without merit and is vigorously defending against these lawsuits.
	Special Regional Pasto Grande Project (“Pasto Grande Project”)
	In the last quarter of 2012, the Pasto Grande Project, an entity of the Regional Government of Moquegua, filed a lawsuit against SCC’s Peruvian Branch alleging property rights over a certain area used by the Peruvian Branch and seeking the demolition of the tailings dam where SCC’s Peruvian Branch has deposited its tailings from the Toquepala and Cuajone operations since 1995.  The Peruvian Branch has had title to use the area in question since 1960 and has constructed and operated the tailing dams also with proper governmental authorization, since 1995.  SCC’s Peruvian Branch asserts that the lawsuit is without merit and is vigorously defending against the lawsuit. Upon a motion filed by the Peruvian Branch the lower court has included the Ministry of Energy and Mines as a defendant in this lawsuit.  The Ministry of Energy and Mines has answered the complaint and denied the validity of the claim. As of December 31, 2013, the case remains pending without further developments.
	Labor matters:
	In recent years the Company has experienced a positive labor environment in its operations in Mexico and Peru which is allowing an increase productivity as well as helping to achieving the goals of its capital expansion program.
	Peruvian operations
	Approximately 65.3% of the Company’s 4,430 Peruvian employees were unionized at December 31, 2013, represented by seven separate unions. Three of these unions, one at each major production area, represent the majority of the Company´s workers. Also, there are four smaller unions, representing the balance of workers.  The Company conducted negotiations with the unions whose collective bargaining agreements expired in 2012. In the first quarter of 2013, the Company signed three-year agreements with all the unions. The agreements included, among other things, annual salary increases of 6.5%, 5% and 5% for each of the three years.
	Mexican operations
	In recent years, the Mexican operations have experienced a positive improvement of their labor environment, as its workers, opted to change their affiliation from the Sindicato Nacional de Trabajadores Mineros, Metalurgicos y Similares de la Republica Mexicana (National Union of Mine and Metal Workers and Similar Activities of the Mexican Republic or the “National Mining Union”) led by Napoleon Gomez Urrutia to other less politicized unions.
	The workers of the San Martin and Taxco mines, however, are still under the National Mining Union, have been on strike since July 2007.  On December 10, 2009, a federal court confirmed the legality of the San Martin strike.  In order to recover the control of the San Martin mine and resume operations, on January 27, 2011, the Company filed a court petition requesting that the court, among other things define the termination payment for each unionized worker.  The court denied the petition alleging that, according to federal labor law, the union was the only legitimate party to file such petition.  On appeal by the Company, on May 13, 2011, the Mexican federal tribunal accepted the petition.  In July 2011, the National Mining Union appealed the favorable court decision before the Supreme Court.  On November 7, 2012, the Supreme Court affirmed the decision of the federal tribunal.  The Company filed a new proceeding before the labor court on the basis of the Supreme Court decision, which recognized the right of the labor court to define responsibility for the strike and the termination payment for each unionized worker.  A favorable decision of the labor court in this new proceeding would have the effect of terminating the protracted strike at San Martin.  As of December 31, 2013, the case remains pending without further developments.  On August 1, 2013, the National Union of Workers Engaged in Exploration, Exploitation and Processing of Mines in the Mexican Republic, which is the union operating at Mexicana del Cobre and IMMSA, filed a new petition before the labor authorities to replace the National Mining Union at the San Martin mine, because it believes that it represents more workers at the San Martin mine than the National Mining Union. On August 12, 2013 another union which wanted to replace the existing unit at San Martin in order to expedite the restart of operations at San Martin withdrew its petition. As of December 31, 2013, the proceeding remains pending without further developments.
	In the case of the Taxco mine, following the workers refusal to allow exploration of new reserves, the Company commenced litigation seeking to terminate the labor relationship with workers of the Taxco mine (including the related collective bargaining agreement).  On September 1, 2010, the federal labor court issued a ruling approving the termination of the collective bargaining agreement and all the individual labor contracts of the workers affiliated with the Mexican mining union at the Taxco mine.  The mining union appealed the labor court ruling before a federal court.  In September 2011, the federal court accepted the union’s appeal and requested that the federal labor court review the procedure. After several legal proceedings on January 25, 2013, the Company filed a new proceeding before the labor court on the basis of the Supreme Court decision in the San Martin case, which recognized the right of the labor court to define responsibility for the strike and the termination payment for each unionized worker.  A favorable decision of the labor court in this new proceeding would have the effect of terminating the protracted strike at Taxco. As of December 31, 2013, this case is pending resolution.
	It is expected that operations at these mines will remain suspended until these labor issues are resolved.
	In view of these length strikes, the Company has reviewed the carrying value of the San Martin and Taxco mines to ascertain whether impairment exists. The Company concluded that the assets located at these mines are not impaired.
	Other legal matters:
	The Company is involved in various other legal proceedings incidental to its operations, but the Company does not believe that decisions adverse to it in any such proceedings, individually or in the aggregate, would have a material effect on its financial position or results of operations.
	Other Contingencies:
	Tia Maria:
	Tia Maria, a Peruvian investment project, was suspended by governmental action in April 2011 in light of protests and disruptions carried out by a small group of activists who alleged, among other things, that the project would result in severe environmental contamination and the diversion of agricultural water resources.
	The Company prepared a new EIA study taking into account local community concerns and new government guidance. The Company considers that this new EIA will alleviate the concerns previously raised by the Tia Maria project’s neighboring communities, provide them with an independent source of information and reaffirm the validity of the Company’s assessment of the project.
	In the fourth quarter 2013 the Company successfully held the two workshops and the public hearing required as part of the EIA approval process and also submitted the new EIA for the Tia Maria project to the Ministry of Energy and Mines (“MINEM”).  The new EIA is now being reviewed by the MINEM and the Company is confident that this study addresses major concerns of the project’s stakeholders. The Company expects to receive approval of this study by the end of the second quarter 2014 and resume work on the project, with the goal of production start-up late in 2016. However, no assurances can be given as to the specific timing of each such approval.
	The Company has legal and valid title to the Tia Maria mining concessions and the over-lapping surface land in the area. None of above noted activities have in any way challenged, revoked, impaired or annulled the Company´s legal rights to the Tia Maria mining concessions and/or the over-lapping surface land titles acquired in the past. All the Company’s property rights on these areas are in full force.
	In view of the delay in this project, the Company has reviewed the carrying value of this asset to ascertain whether impairment exists. Total spending on the project, through December 31, 2013, was $534.6 million of which $189.5 million has been reassigned to other Company operations. The Company believes that it is in a better position than prior periods to obtain the approval to develop the project.  The Company does not believe that an impairment exists.
	Other commitments:
Peruvian Operations
Power purchase agreement - Enersur
In 1997, SCC sold its Ilo power plant to an independent power company, Enersur S.A. (“Enersur”).  In connection with the sale, a power purchase agreement (“PPA”) was also completed under which SCC agreed to purchase all of its power needs for its current Peruvian operations from Enersur for twenty years, commencing in 1997.
The Company signed in 2009 a Memorandum of Understanding (“MOU”) with Enersur regarding its PPA.  The MOU contains new economic terms that the Company believes better reflects current economic conditions in the power industry in Peru.  The new economic conditions agreed to in the MOU have been applied by Enersur to its invoices to the Company since May 2009.  Additionally, the MOU includes an option for providing power for the Tia Maria project. However, due to the delay at the Tia Maria project the final agreement was put on hold, see caption “Tia Maria” above.
Toquepala Concentrator Expansion
In connection with the EIA for the Toquepala expansion project, some community groups raised concerns related to water usage and pollution. As a result of these issues the Peruvian government started discussions with the local communities and the regional authorities to resolve this impasse. In February 2013, the Company reached a final agreement with the province of Candarave, one of the three provinces neighboring the Toquepala unit, which commits the Company to funding S/.255 million (approximately $100 million) for development projects in the province.  In the second quarter of 2013, the Company made a first contribution of S/.45 million (approximately $17 million) to the development fund of the Candarave province  The Company continued working with the authorities of the Candarave province and in June 2013 signed an agreement with the National Water Authority, local authorities and the Candarave Board of Water Users for the hydrogeologic study of the Locumba river basin in order to improve the water utilization in the province.
In November 2013, the Company reached a final agreement with the Jorge Basadre province which commits the Company to fund S/.100 million (approximately $36 million) for social development projects in the province. In addition, the Company has agreed to fund various other social programs with the use of advance income tax payments.
The contributions to Candarave and Jorge Basadre provinces are contingent upon receiving approval for the project and will be expended through the life of the Toquepala expansion project. With these agreements the Company is close to establishing accords with the principal communities and interested parties in the area.
Mexican operations
Power purchase agreement - MGE
MGE, a subsidiary of Grupo Mexico, has completed the construction of one of the two power plants in Mexico designed to supply power to some of the Company’s Mexican operations.  It is expected that MGE will supply approximately 12% of its power output to third-party energy users.  In December 2012, the Company signed a power purchase agreement with MGE, whereby MGE will supply the Company with power through 2032.  The first plant was completed in June 2013 and began to supply power to the Company in December 2013.  It is expected that the second plant will be completed by the end of the second quarter 2014.
For an estimate of the Company's contractual obligations for power purchases, please see, "Contractual Obligations" under item 7. Management Discussion and Analysis of Financial Condition and Results of Operations.
Tax contingency matters:
Tax contingencies are provided for under ASC 740-10-50-15 Uncertain tax position (see Note 7, “Income taxes”).

STOCKHOLDERS_EQUITY

STOCKHOLDERS' EQUITY:	12 Months Ended
	Dec. 31, 2013
STOCKHOLDERS' EQUITY:	'
STOCKHOLDERS' EQUITY:	'
	NOTE 14-STOCKHOLDERS’ EQUITY
	Delaware Court Decision Related to SCC Shareholder Derivative Lawsuit:
	On October 9, 2012 the Company received from AMC, its majority shareholder, $2,108.2 million in satisfaction of the judgment issued pursuant to the decision of the Court of Chancery of Delaware, which concluded that the Company paid an excessive price to AMC in the 2005 merger between the Company and Minera Mexico, S.A. de C.V. From the aforementioned sum received from AMC, the Company paid $316.2 million of legal fees and expenses to the plaintiff’s attorneys to satisfy the court ordered award of attorneys’ fees and expenses. The effect of this award was recorded in the Company’s 2012 results. The $2,108.2 million awarded to the Company was included in the capital accounts (additional paid-in capital) on the balance sheet. Additionally, the Company recorded an operating expense of $316.2 million in its 2012 results for the legal fees related to this award.
	Treasury Stock:
	Activity in treasury stock in the years 2013 and 2012 was as follows (in millions):
		2013			2012
	Southern Copper common shares
	Balance as of January 1,	$	729.8		$	734.1
	Purchase of shares	281.4			147.3
	Stock dividend distribution	—			(151.4		)
	Used for corporate purposes	(0.2		)	(0.2		)
	Balance as of December 31,	1,011.00			729.8
	Parent Company (Grupo Mexico) common shares
	Balance as of January 1,	189			163.7
	Other activity, including dividend, interest and currency translation effect	16.6			25.3
	Balance as of December 31,	205.6			189
	Treasury stock balance as of December 31,	$	1,216.60		$	918.8
	SCC shares of common stock in treasury:
	At December 31, 2013 and 2012, treasury stock holds 49,278,536 shares and 39,045,536  shares of SCC’s common stock with a cost of $1,011.0 million and $729.8 million, respectively.  The shares of SCC’s common stock held in treasury are used for general corporate purposes.
	SCC share repurchase program:
	In 2008, the Company’s Board of Directors authorized a $500 million share repurchase program. On July 28, 2011, the Company’s Board of Directors authorized an increase of the share repurchase program to $1 billion and on October 17, 2013, the Company’s Board of Directors authorized an additional increase to $2 billion. Pursuant to this program, the Company purchased common stock as shown in the table below.  These shares are available for general corporate purposes.  The Company may purchase additional shares of its common stock from time to time, based on market conditions and other factors.  This repurchase program has no expiration date and may be modified or discontinued at any time.
	Period					Total Number		Average		Total Number of	Maximum	Total Cost
						of Shares		Price		Shares Purchased	Number of	($ in
								Paid per		as Part of Publicly	Shares that May
											Yet Be
											Purchased
											Under the Plan
	From		To			Purchased		Share		Announced Plan	@ $28.71 (*)	millions)
	2008:00:00					28,510,150		$	13.49	28,510,150		$	384.7
	2009:00:00					4,912,000		14.64		33,422,150		71.9
	2010:00:00					15,600		29.69		33,437,750		0.5
	2011:00:00					9,034,400		30.29		42,472,150		273.7
	2012:00:00					4,442,336		33.17		46,914,486		147.3
	2013:00:00
	4/1/13		4/30/13			1,500		32.96		46,915,986		0.1
	5/1/13		5/31/13			807,100		32.33		47,723,086		26.1
	6/1/13		6/30/13			1,350,000		29.05		49,073,086		39.2
	Total second quarter					2,158,600		30.28				65.4
	7/1/13			7/31/13		1,300,000		27.6		50,373,086		35.9
	8/1/13			8/31/13		641,400		26.68		51,014,486		17.1
	9/1/13			9/30/13		204,012		27.65		51,218,498		5.6
	Total third quarter					2,145,412		27.33				58.6
	10/1/13			10/31/13		1,552,100		27.68		52,770,598		42.9
	11/1/13			11/30/13		2,446,490		26.49		55,217,088		64.8
	12/1/13			12/31/13		1,942,398		25.58		57,159,486		49.7
	Total fourth quarter 2013					5,940,988		26.5				157.4
	Total purchased					57,159,486		$	20.29		29,275,745	$	1,159.50
	(*) NYSE closing price of SCC common shares at December 31, 2013
	As a result of the repurchase of shares of SCC’s common stock, Grupo Mexico’s direct and indirect ownership was 82.3% as of December 31, 2013 and 81.3% at December 31, 2012.
	Directors’ Stock Award Plan:
	The Company established a stock award compensation plan for certain directors who are not compensated as employees of the Company.  Under this plan, participants will receive 1,200 shares of common stock upon election and 1,200 additional shares following each annual meeting of stockholders thereafter. 600,000 shares of Southern Copper common stock have been reserved for this plan.  The fair value of the award is measured each year at the date of the grant.
	The activity of this plan for the years ended December 31, 2013 and 2012 was as follows:
		2013		2012
	Total SCC shares reserved for the plan	600,000		600,000
	Total shares granted at January 1,	(285,600	)	(271,200	)
	Granted in the period	(12,000	)	(14,400	)
	Total shares granted at December 31,	(297,600	)	(285,600	)
	Remaining shares reserved	302,400		314,400
	Parent Company common shares:
	At December 31, 2013 and 2012, there were in treasury 75,262,919 and 80,674,702 of Grupo Mexico’s common shares, respectively.
	Employee Stock Purchase Plan:
	In January 2007, the Company offered to eligible employees a stock purchase plan (the “Employee Stock Purchase Plan”) through a trust that acquires shares of Grupo Mexico stock for sale to its employees, employees of subsidiaries, and certain affiliated companies.  The purchase price is established at the approximate fair market value on the grant date.  Every two years employees will be able to acquire title to 50% of the shares paid in the previous two years.  The employees will pay for shares purchased through monthly payroll deductions over the eight year period of the plan.  At the end of the eight year period, the Company will grant the participant a bonus of 1 share for every 10 shares purchased by the employee.
	If Grupo Mexico pays dividends on shares during the eight year period, the participants will be entitled to receive the dividend in cash for all shares that have been fully purchased and paid as of the date that the dividend is paid.  If the participant has only partially paid for shares, the entitled dividends will be used to reduce the remaining liability owed for purchased shares.
In the case of voluntary or involuntary resignation/termination of the employee, the Company will pay to the employee the fair market sales price at the date of resignation/termination of the fully paid shares, net of costs and taxes.  When the fair market sales value of the shares is higher than the purchase price, the Company will apply a deduction over the amount to be paid to the employee based on a decreasing schedule specified in the plan for each case.
In case of retirement or death of the employee, the Company will render the buyer or his legal beneficiary, the fair market sales value as of the date of retirement or death of the shares effectively paid, net of costs and taxes.
The stock based compensation expense for the years ended December 31, 2013, 2012 and 2011 and the remaining balance of the unrecognized compensation expense under the Employee Stock Purchase Plan, were as follows:
	2013			2012			2011
Stock based compensation expense	$	2.1		$	2.1		$	2.1
Unrecognized compensation expense	$	2.1		$	4.2		$	6.3
The unrecognized compensation expense under this plan is expected to be recognized over the remaining one year period.
The following table presents the stock award activity of the Employee Stock Purchase Plan for the years ended December 31, 2013 and 2012:
	Shares		Unit Weighted Average
			Grant Date Fair Value
Outstanding shares at January 1, 2013	6,955,572		$	1.16
Granted	—		—
Exercised	(2,474,814	)	1.16
Forfeited	(31,159	)	1.16
Outstanding shares at December 31, 2013	4,449,599		1.16
Outstanding shares at January 1, 2012	7,270,341		1.16
Granted	—		—
Exercised	(220,430	)	1.16
Forfeited	(94,339	)	1.16
Outstanding shares at December 31, 2012	6,955,572		$	1.16
During 2010, the Company offered to eligible employees a new stock purchase plan (the “New Employee Stock Purchase Plan”) through a trust that acquires series B shares of Grupo Mexico stock for sale to its employees, employees of subsidiaries, and certain affiliated companies.  The purchase price was established at 26.51 Mexican pesos (approximately $2.05) for the initial subscription.  The terms of the New Employee Stock Purchase Plan are similar to the terms of the Employee Stock Purchase Plan.
The stock based compensation expense for the years ended December 31, 2013, 2012 and 2011 and the remaining balance of the unrecognized compensation expense under the New Employee Stock Purchase Plan, were as follows:
	2013			2012			2011
Stock based compensation expense	$	0.6		$	0.6		$	0.6
Unrecognized compensation expense	$	2.6		$	3.2		$	3.8
The unrecognized compensation expense under this plan is expected to be recognized over the remaining five year period.
The following table presents the stock award activity of the New Employee Stock Purchase Plan for the years ended December 31, 2013 and 2012:
	Shares		Unit Weighted Average
			Grant Date Fair Value
Outstanding shares at January 1, 2013	2,944,742		$	2.05
Granted	226,613		2.05
Exercised	(38,098	)	2.05
Forfeited	(120,793	)	2.05
Outstanding shares at December 31, 2013	3,012,464		2.05
Outstanding shares at January 1, 2012	3,807,146		2.05
Granted	—		—
Exercised	(772,850	)	2.05
Forfeited	(89,554	)	2.05
Outstanding shares at December 31, 2012	2,944,742		$	2.05
Executive Stock Purchase Plan:
Grupo Mexico also offers a stock purchase plan for certain members of its executive management and the executive management of its subsidiaries and certain affiliated companies.  Under this plan, participants will receive incentive cash bonuses which are used to purchase shares of Grupo Mexico which are deposited in a trust.

DERIVATIVE_INSTRUMENTS

DERIVATIVE INSTRUMENTS:	12 Months Ended
	Dec. 31, 2013
DERIVATIVE INSTRUMENTS:	'
DERIVATIVE INSTRUMENTS:	'
	NOTE 15-DERIVATIVE INSTRUMENTS:
	As part of its risk management policy, the Company occasionally uses derivative instruments to (i) safeguard the corporate assets; (ii) insure the value of its future revenue stream, and (iii) lessen the impact of unforeseen market swings of its sales revenues.  To comply with these objectives the Company, from time to time, enters into commodities prices derivatives, interest rate derivative, exchange rate derivative and other instruments.  The Company does not enter into derivative contracts unless it anticipates a future activity that is likely to occur that will result in exposing the Company to market risk.
	Copper hedges:
	In 2011 and 2012, the Company held copper zero cost collar derivative contracts and copper swap contracts to reduce price volatility and to protect a portion of its sales value.  These transactions meet the requirements of hedge accounting. The realized gain was recorded in net sales on the consolidated statement of earnings and included in operating activities on the consolidated statement of cash flows.
	The following table summarizes the copper derivative activity related to copper sales transactions realized in 2012 and 2011:
		2012		2011
	Zero cost collar contracts:
	Pounds (in millions)	46.3		423.3
	Average LME cap price	$	5.18	$	3.63
	Average LME floor price	$	3.5	$	2.27
	Swap contracts:
	Pounds (in millions)	—		390.8
	Weighted average COMEX price	—		$	3.46
	Realized gain (loss) on copper derivatives	—		$	13.5
	The hedge instruments are based on LME copper prices.  The Company performed statistical analysis on the difference between the average monthly copper price on the LME and the COMEX exchanges and determined that the correlation coefficient is greater than 0.999.  Based on this analysis the Company considers that the LME underlying price matches its sales priced at COMEX prices.  These cash flow hedge relationships qualify as critical matched terms hedge relationships and as a result have no ineffectiveness.  The Company performs periodic quantitative assessments to confirm that the relationship was highly effective and that the ineffectiveness was de minimis.
	During 2013 at as of December 31, 2013, the Company did not hold copper derivative contracts.
	Transactions under these metal price protection programs are accounted for as cash flow hedges under ASC 815-30 “Derivatives and Hedging-Cash Flow Hedges” as they meet the requirements for this treatment and are adjusted to fair market value based on the metal prices as of the last day of the respective reporting period with the gain or loss recorded in other comprehensive income until settlement, at which time the gain or loss is reclassified to net sales in the consolidated statements of earnings.
	Please see additional disclosure about fair value on Note 16-”Financial instruments” below.

FINANCIAL_INSTRUMENTS

FINANCIAL INSTRUMENTS:	12 Months Ended
	Dec. 31, 2013
FINANCIAL INSTRUMENTS:	'
FINANCIAL INSTRUMENTS:	'
	NOTE 16-FINANCIAL INSTRUMENTS:
	Subtopic 810-10 of ASC “Fair value measurement and disclosures — Overall” establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value.  The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements).  The three levels of the fair value hierarchy under Subtopic 810-10 are described below:
	Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.
	Level 2 - Inputs that are observable, either directly or indirectly, but do not qualify as Level 1 inputs. (i.e., quoted prices for similar assets or liabilities).
	Level 3 - Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity).
	The carrying amounts of certain financial instruments, including cash and cash equivalents, accounts receivable (other than accounts receivable associated with provisionally priced sales) and accounts payable approximate fair value due to their short maturities.  Consequently, such financial instruments are not included in the following table that provides information about the carrying amounts and estimated fair values of other financial instruments that are not measured at fair value in the consolidated balance sheet as of December 31, 2013 (in millions):
		Balance at December 31, 2013
		Carrying Value		Fair Value
	Liabilities:
	Long-term debt	$	4,204.90	$	4,088.80
	Long-term debt is carried at amortized cost and its estimated fair value is based on quoted market prices classified as Level 1 in the fair value hierarchy.
	Fair values of assets and liabilities measured at fair value on a recurring basis were calculated as of December 31, 2013 and 2012, as follows (in millions):
		Fair Value at Measurement Date Using:
	Description	Fair Value		Quoted prices in		Significant		Significant
		as of		active markets for		other		unobservable
		December		identical assets		observable		inputs
		31, 2013		(Level 1)		inputs		(Level 3)
						(Level 2)
	Assets:
	Short term investment:
	- Trading securities	$	202.6	$	202.6
	- Available-for-sale debt securities:
	Corporate bonds	0.4				$	0.4
	Asset backed securities	0.1				0.1
	Mortgage backed securities	5.2				5.2
	Accounts receivable:
	- Derivatives - Not classified as hedges:
	Provisionally priced sales:
	Copper	53.9		53.9
	Molybdenum	100.2		100.2		—		—
	Total	$	362.4	$	356.7	$	5.7	$	—
		Fair Value at Measurement Date Using:
	Description	Fair Value		Quoted prices in		Significant		Significant
		as of		active markets for		other		unobservable
		December		identical assets		observable		inputs
		31, 2012		(Level 1)		inputs		(Level 3)
						(Level 2)
	Assets:
	Short term investment:
	- Trading securities	$	127.8	$	127.8
	- Available-for-sale debt securities:
	Corporate bonds	0.4				$	0.4
	Asset backed securities	0.1				0.1
	Mortgage backed securities	6				6
	Accounts receivable:
	- Derivatives - Not classified as hedges:
	Provisionally priced sales:
	Copper	70.8		70.8
	Molybdenum	102.9		102.9		—		—
	Total	$	308	$	301.5	$	6.5	$	—
	The Company’s short-term trading securities investments are classified as Level 1 because they are valued using quoted prices of the same securities as they consist of bonds issued by public companies and publicly traded.  The Company’s short-term available-for-sale investments are classified as Level 2 because they are valued using quoted prices for similar investments.
	The Company’s accounts receivables associated with provisionally priced copper sales are valued using quoted market prices based on the forward price on the LME or on the COMEX. Such value is classified within Level 1 of the fair value hierarchy. Molybdenum prices are established by reference to the publication Platt’s Metals Week and are considered Level 1 in the fair value hierarchy.

CONCENTRATION_OF_RISK

CONCENTRATION OF RISK:	12 Months Ended
	Dec. 31, 2013
CONCENTRATION OF RISK:	'
CONCENTRATION OF RISK:	'
	NOTE 17-CONCENTRATION OF RISK:
	The Company operates four open-pit copper mines, five underground poly-metallic mines, two smelters and eight refineries in Peru and Mexico and substantially all of its assets are located in these countries.  There can be no assurances that the Company’s operations and assets that are subject to the jurisdiction of the governments of Peru and Mexico will not be adversely affected by future actions of such governments.  Much of the Company’s products are exported from Peru and Mexico to customers principally in the United States, Europe, Asia and South America.
	Financial instruments, which potentially subject the Company to a concentration of credit risk, consist primarily of cash and cash equivalents, short-term investments and trade accounts receivable.
	The Company invests or maintains available cash with various banks, principally in the United States, Mexico, Europe and Peru, or in commercial papers of highly-rated companies.  As part of its cash management process, the Company regularly monitors the relative credit standing of these institutions.  At December 31, 2013, SCC had invested its cash and cash equivalents as follows:
					% of total		% in one institution
	Country	$ in million			cash (1)		of country		of total cash
	United States	$	1,020.00		54.2	%	45.8	%	24.9	%
	Peru	94			5	%	73.7	%	3.7	%
	Mexico	147.1			7.8	%	95.1	%	7.4	%
	Switzerland	619.9			33	%	100	%	33	%
	Total cash and short-term investment	$	1,881.00		100	%
	(1)               98.7% of the Company’s cash is in U.S. dollars.
	During the normal course of business, the Company provides credit to its customers.  Although the receivables resulting from these transactions are not collateralized, the Company has not experienced significant problems with the collection of receivables.
	The Company is exposed to credit loss in cases where the financial institutions with which it has entered into derivative transactions (commodity, foreign exchange and currency/interest rate swaps) are unable to pay when they owe funds as a result of protection agreements with them.  To minimize the risk of such losses, the Company only uses highly-rated financial institutions that meet certain requirements.  The Company also periodically reviews the creditworthiness of these institutions to ensure that they are maintaining their ratings.  The Company does not anticipate that any of the financial institutions will default on their obligations.
	The Company’s largest customers as percentage of accounts receivable and total sales were as follows:
		2013		2012		2011
	Accounts receivable trade as of December 31,
	Five largest customers	37.1	%	40	%	35.9	%
	Largest customer	12.2	%	10.4	%	10.8	%
	Total sales in year
	Five largest customers	28.7	%	28.8	%	28.7	%
	Largest customer	8.4	%	7.4	%	7.3	%

RELATED_PARTY_TRANSACTIONS

RELATED PARTY TRANSACTIONS:	12 Months Ended
	Dec. 31, 2013
RELATED PARTY TRANSACTIONS:	'
RELATED PARTY TRANSACTIONS:	'
	NOTE 18-RELATED PARTY TRANSACTIONS:
	The Company has entered into certain transactions in the ordinary course of business with parties that are controlling shareholders or their affiliates. These transactions include the lease of office space, air transportation and construction services and products and services related to mining and refining. The Company lends and borrows funds among affiliates for acquisitions and other corporate purposes. These financial transactions bear interest and are subject to review and approval by senior management, as are all related party transactions. It is the Company’s policy that the Audit Committee of the Board of Directors shall review all related party transactions. The Company is prohibited from entering or continuing a material related party transaction that has not been reviewed and approved or ratified by the Audit Committee.
	Receivable and payable balances with related parties are shown below (in millions):
		As of December 31,
		2013		2012
	Related parties receivable current:
	Grupo Mexico, S.A.B de C.V. (“Grupo Mexico”) and affiliates	$	0.8	$	1.8
	Mexico Generadora de Energia S. de R.L. (“MGE”)	18.8		—
	Compania Perforadora Mexico S.A.P.I. de C.V.	0.7		0.5
	Compania Minera Coimolache S.A.	17.2		23.4
	Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	0.6		—
		$	38.1	$	25.7
	Related parties receivable non-current:
	MGE	$	161.2	$	184
	Related parties payable:
	Grupo Mexico and affiliates	$	3.3	$	—
	MGE	14.4		—
	Asarco LLC	6.2		15.3
	Higher Technology S.A.C.	0.1		0.2
	Breaker, S.A. de C.V	0.3		—
	Sempertrans and affiliates	0.1		—
	Mexico Transportes Aereos S.A. de C.V. (“Mextransport”)	0.6		0.1
	Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	—		2.1
	Ferrocarril Mexicano S.A. de C.V.	3.3		2.6
		$	28.3	$	20.3
	Purchase and sale activity:
	Grupo Mexico and affiliates:
	The following table summarize the purchase and sale activities with Grupo Mexico and its affiliates in 2013, 2012 and 2011 (in millions):
		2013		2012		2011
	Purchase activity
	Grupo Mexico	$	13.8	$	13.9	$	13.9
	Ferrocarril Mexicano, S.A de C.V.	19.7		13.9		11.6
	Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	54.4		49.5		38.2
	Compania Perforadora Mexico S.A.P.I. de C.V.	6.1		2.2		1.8
	MGE	14.4		—		—
	Asarco LLC	98		58.6		23.4
	Total Purchases	$	206.4	$	138.1	$	88.9
	Sales activity
	Asarco	$	88.7	$	23.5	$	68.8
	Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	0.8		0.5		0.5
	Compania Perforadora Mexico S.A.P.I. de C.V.	0.6		—		0.2
	MGE	27.3		—		—
	Total	$	117.4	$	24	$	69.5
	Grupo Mexico, the Company’s ultimate parent and the majority indirect stockholder of the Company, and its affiliates provide various services to the Company.  These services are primarily related to accounting, legal, tax, financial, treasury, human resources, price risk assessment and hedging, purchasing, procurement and logistics, sales and administrative and other support services.  The Company pays Grupo Mexico for these services and expects to continue these services in the future.
	The Company’s Mexican operations paid fees for freight services provided by Ferrocarril Mexicano, S.A de C.V., and for drilling services provided by Compania Perforadora Mexico S.A.P.I. de C.V. both companies are subsidiaries of Grupo Mexico.
	The Company’s Mexican operations purchased from Asarco scrap and other residual copper mineral and from MGE power. Both companies are subsidiaries of Grupo Mexico.
	The Company paid fees for engineering, construction and consulting services provided by subsidiaries of Mexico Proyectos y Desarrollos, S.A. de C. V, a subsidiary of Grupo Mexico.
	In 2005, the Company organized MGE, as a subsidiary of Minera Mexico, for the construction of two power plants to supply power to the Company’s Mexican operations. In May 2010, the Company’s Mexican operations granted a $350 million line of credit to MGE for the construction of the power plants.  That line of credit was due on December 31, 2012 and carried an interest rate of 4.4%.  In the first quarter of 2012, Controladora de Infraestructura Energetica Mexico, S. A. de C. V., an indirect subsidiary of Grupo Mexico, acquired 99.999% of MGE through a capital subscription of 1,928.6 million of Mexican pesos (approximately $150 million), reducing Minera Mexico’s participation to less than 0.001%. As consequence, of this change in control MGE became an indirect subsidiary of Grupo Mexico.  Additionally, at the same time, MGE paid $150 million to the Company’s Mexican operations partially reducing the total debt.  At December 31, 2012, the outstanding balance of $184.0 million was restructured as subordinated debt of MGE with an interest rate of 5.75%.  The $184.0 million includes $37.6 million drawn on the line of credit in 2012 and $146.4 million drawn through December 31, 2011.  MGE will repay its debt to the Company using a percentage of its profits until such time as the debt is satisfied.  At December 31, 2013 the remaining balance of the debt was $161.2 million and was recorded as non-current related party receivable on the consolidated balance sheet. Related to this loan, the Company recorded interest income of $9.9 million in 2013.
	In December 2012, the Company signed a power purchase agreement with MGE, whereby MGE will supply some of the Company’s Mexican operations with power through 2032.  MGE completed construction of its first power plant in June 2013 and expects to complete the construction of the second plant in the second quarter of 2014.  MGE began supplying power to the Company in December 2013. It is expected that MGE will supply a portion of its power output to third-party energy users. See also Note 13 - Commitments and Contingencies, Other commitments.
	The Company sold copper cathodes, rod and anodes, as well as sulfuric acid, silver, gold and lime to Asarco.  In addition, the Company received fees for building rental and maintenance services provided to Mexico Proyectos y Desarrollos, S.A. de C.V. and its affiliates and to Perforadora Mexico S.A.P.I de C.V., and for natural gas and services provided to MGE, all subsidiaries of Grupo Mexico.
	Companies with relationships to the controlling group:
	The following table summarize the purchase and sales activities with other Larrea family companies in 2013, 2012 and 2011 (in millions):
		2013		2012		2011
	Purchase activity
	Mexico Compania de Productos Automotrices, S.A. de C.V.	$	—	$	—	$	0.2
	Mextransport	2.7		2.7		2.8
	Total purchase	$	2.7	$	2.7	$	3
	Sales activity
	Mextransport	$	0.3	$	0.9	$	—
	The Larrea family controls a majority of the capital stock of Grupo Mexico, and has extensive interests in other businesses, including aviation and real estate.  The Company engages in certain transactions in the ordinary course of business with other entities controlled by the Larrea family relating to the lease of office space and air transportation.  In connection with this, the Company paid fees for maintenance services and sale of vehicles provided by Mexico Compania de Productos Automotrices, S.A. de C.V., a company controlled by the Larrea family liquidated in 2011.
	In 2007, the Company’s Mexican subsidiaries provided guaranties for two loans obtained by Mextransport, a company controlled by the Larrea family, from Bank of Nova Scotia in Mexico. Mextransport provides aviation services to the Company´s Mexican operations. The repayment of these loans was completed in August 2013.  The Company also received fees from Mextransport.
	Companies with relationships to SCC executive officers:
	The following table summarize the purchase activity with companies with relationships to SCC executive officers’ families in 2013, 2012 and 2011 (in millions):
	2013		2012		2011
Higher Technology S.A.C.	$	2.2	$	3.1	$	1.9
Servicios y Fabricaciones Mecanicas S.A.C.	0.4		0.2		0.6
Sempertrans	1.1		0.3		0.2
PIGOBA, S.A. de C.V.	0.3		0.8		0.2
Breaker, S.A. de C.V.	3.9		2.3		5.3
Total purchased	$	7.9	$	6.7	$	8.2
The Company purchased industrial materials from Higher Technology S.A.C., and paid fees for maintenance services provided by Servicios y Fabricaciones Mecanicas S.A.C. Mr. Carlos Gonzalez, the son of SCC’s Chief Executive Officer, has a proprietary interest in these companies.
The Company purchased industrial material from Sempertrans France Belting Technology and Sempertrans Belchatow SP Z.O.O., in which Mr. Alejandro Gonzalez is employed as a sales representative.  Also, the Company purchased industrial material from PIGOBA, S.A. de C.V., a company in which Mr. Alejandro Gonzalez has a proprietary interest.  Mr. Alejandro Gonzalez is the son of SCC’s Chief Executive Officer.
The Company purchased industrial material and services from Breaker, S.A. de C.V., a company in which Mr. Jorge Gonzalez, son-in-law of SCC’s Chief Executive Officer, has a proprietary interest, and from Breaker Peru S.A.C., a company in which Messrs. Jorge Gonzalez and Carlos Gonzalez, son-in-law and son, respectively, of SCC´s Chief Executive Officer have a proprietary interest.
Equity Investment in Affiliate: The Company has a 44.2% participation in Coimolache S.A. (“Coimolache”), which it accounts for on the equity method. Coimolache owns Tantahuatay, a gold mine located in the northern part of Peru. To support the cost of the development of Tantahuatay, the Company loaned $56.6 million to Coimolache. Conditions and balance of the loan as of December 31, 2013 are as follows (in millions):
	Loan
Total loan granted	$	56.6
Interest rate	6 months Libor + 3%
	(approximately 3.35%)
Remaining balance at December 31, 2013	$	17.2
Interest (in millions):
	Years ended December 31,
	2013		2012
Interest earned	$	0.9	$	1.9
In 2013, Coimolache paid the Company $18.4 million, as a return of funds expensed during the exploration stage of the Tantahuatay mine, which amount was recorded as other income in the consolidated statement of income.
It is anticipated that in the future the Company will enter into similar transactions with these same parties.

SEGMENT_AND_RELATED_INFORMATIO

SEGMENT AND RELATED INFORMATION:	12 Months Ended
	Dec. 31, 2013
SEGMENT AND RELATED INFORMATION:	'
SEGMENT AND RELATED INFORMATION:	'
	NOTE 19-SEGMENT AND RELATED INFORMATION:
	Company management views Southern Copper as having three reportable segments and manages it on the basis of these segments. The reportable segments identified by the Company are: the Peruvian operations, the Mexican open-pit operations and the Mexican underground mining operations segment identified as the IMMSA unit.
	The three reportable segments identified are groups of mines, each of which constitute an operating segment, with similar economic characteristics, type of products, processes and support facilities, similar regulatory environments, similar employee bargaining contracts and similar currency risks.  In addition, each mine within the individual group earns revenues from similar type of customers for their products and services and each group incurs expenses independently, including commercial transactions between groups.
	Intersegment sales are based on arms-length prices at the time of sale.  These may not be reflective of actual prices realized by the Company due to various factors, including additional processing, timing of sales to outside customers and transportation cost.  Added to the segment information is information regarding the Company’s sales.  The segments identified by the Company are:
	1.              Peruvian operations, which include the Toquepala and Cuajone mine complexes and the smelting and refining plants, industrial railroad and port facilities that service both mines.  The Peruvian operations produce copper, with production of by-products of molybdenum, silver and other material.
	2.              Mexican open-pit operations, which include La Caridad and Buenavista mine complexes and the smelting and refining plants and support facilities that service both mines.  The Mexican open-pit operations produce copper, with production of by-products of molybdenum, silver and other material.
	3.              Mexican underground mining operations, which include five underground mines that produce zinc, copper, silver and gold, a coal mine which produces coal and coke, and a zinc refinery.  This group is identified as the IMMSA unit.
	The Peruvian operations include two open-pit copper mines whose mineral output is transported by rail to Ilo, Peru where it is processed at the Company’s Ilo smelter and refinery, without distinguishing between the products of the two mines.  The resulting product, anodes and refined copper, are then shipped to customers throughout the world.  These shipments are recorded as revenue of the Company’s Peruvian mines.
	The Mexican open-pit segment includes two copper mines whose mineral output is processed in the same smelter and refinery without distinguishing between the products of the two mines.  The resultant product, anodes and refined copper, are then shipped to customers throughout the world.  These shipments are recorded as revenues of the Company’s Mexican open-pit mines.
	The Company has determined that it is necessary to classify the Peruvian open-pit operations as a separate operating segment from the Mexican open-pit operations due to the very distinct regulatory and political environments in which they operate.  The Company’s Senior Management Officers must consider the operations in each country separately when analyzing results of the Company and making key decisions.  The open-pit mines in Peru must comply with stricter environmental rules and must continually deal with a political climate that has a very distinct vision of the mining industry as compared to Mexico.  In addition, the collective bargaining agreement contracts are negotiated differently in each of the countries.  These key differences result in the Company taking varying decisions with regards to open-pit operations in the two countries.
	The IMMSA segment includes five mines whose minerals are processed in the same refinery.  This segment also includes an underground coal mine.  Sales of product from this segment are recorded as revenues of the Company’s IMMSA unit.  While the Mexican underground mines are subject to a very similar regulatory environment of the Mexican open-pit mines, the nature of the products and processes of two Mexican operations vary distinctly.  These differences cause the Company’s Senior Management Officers to take a very different approach when analyzing results and making decisions regarding the two Mexican operations.
	Financial information is regularly prepared for each of the three segments and the results of the Company’s operations are regularly reported to the Senior Management Officers on the segment basis.  The Senior Management Officers of the Company focus on operating income and on total assets as measures of performance to evaluate different segments and to make decisions to allocate resources to the reported segments.  These are common measures in the mining industry.
	Financial information relating to Company’s segments is as follows:
		Year Ended December 31, 2013
		(in millions)
		Mexican			Mexican		Peruvian		Corporate,			Consolidated
		Open-pit			IMMSA		Operations		other and
					Unit				eliminations
	Net sales outside of segments	$	2,976.70		$	361.6	$	2,614.60	$	—		$	5,952.90
	Intersegment sales	—			96.9		—		(96.9		)	—
	Cost of sales (exclusive of depreciation, amortization and depletion)	1,308.90			320.7		1,358.60		(116.9		)	2,871.30
	Selling, general and administrative	35.4			15.1		49.8		2.3			102.6
	Depreciation, amortization and depletion	178.9			31		177.2		8.8			395.9
	Exploration	3.2			27.2		20.6		—			51
	Operating income	$	1,450.30		$	64.5	$	1,008.40	$	8.9		2,532.10
	Less:
	Interest, net											(176.6		)
	Other income (expense)											17.1
	Income taxes											(769.3		)
	Equity earnings of affiliate											20.9
	Non-controlling interest											(5.7		)
	Net income attributable to SCC											$	1,618.50
	Capital expenditures	$	1,209.90		$	60.6	$	372.3	$	60.5		$	1,703.30
	Property, net	$	3,579.90		$	378.2	$	2,451.40	$	66.7		$	6,476.20
	Total assets	$	6,010.30		$	895.6	$	3,753.70	$	550.8		$	11,210.40
		Year Ended December 31, 2012
		(in millions)
		Mexican			Mexican		Peruvian		Corporate			Total
		Open-pit			IMMSA		Operations		and other			Consolidated
					Unit				eliminations
	Net sales outside of segments	$	3,339.00		$	378	$	2,952.30	$	—		$	6,669.30
	Intersegment sales				135				(135.0		)	—
	Cost of sales (exclusive of depreciation, amortization and depletion)	1,228.20			292.4		1,380.50		(131.9		)	2,769.20
	Selling, general and administrative	34.4			14.6		48.5		3.8			101.3
	Depreciation, amortization and depletion	145.6			25.2		160.3		(5.3		)	325.8
	Legal fees related to the SCC shareholder derivative lawsuit								316.2			316.2
	Exploration	5.2			28.2		14.5		—			47.9
	Operating income	$	1,925.60		$	152.6	$	1,348.50	$	(317.8	)	3,108.90
	Less:
	Interest, net											(157.2		)
	Other income (expense)											21.8
	Income taxes											(1,080.9		)
	Equity earnings of affiliate											48.7
	Non-controlling interest											(6.7		)
	Income attributable to SCC											$	1,934.60
	Capital expenditures	$	804.4		$	56	$	257.8	$	(66.3	)	$	1,051.90
	Property, net	$	2,444.90		$	350.9	$	2,231.40	$	129.5		$	5,156.70
	Total assets	$	4,241.40		$	873.1	$	3,353.00	$	1,916.20		$	10,383.70
		Year Ended December 31, 2011
		(in millions)
		Mexican			Mexican		Peruvian		Corporate			Total
		Open-pit			IMMSA		Operations		and other			Consolidated
					Unit				eliminations
Net sales outside of segments	$	3,212.10		$	420.1	$	3,186.50	$	—		$	6,818.70
Intersegment sales	—			126.1		—		(126.1		)	—
Cost of sales (exclusive of depreciation, amortization and depletion)	1,115.80			309.3		1,441.00		(102.9		)	2,763.20
Selling, general and administrative	34.1			14.7		50.8		4.9			104.5
Depreciation, amortization and depletion	133.6			24.5		140.6		(10.6		)	288.1
Exploration	3.5			22		12		—			37.5
Operating income	$	1,925.10		$	175.7	$	1,542.10	$	(17.5	)	3,625.40
Less:
Interest, net											(172.8		)
Other income (expense)											(4.0		)
Income taxes											(1,104.3		)
Non-controlling interest											(7.9		)
Income attributable to SCC											$	2,336.40
Capital expenditures	$	357.6		$	48.7	$	205.5	$	1.1		$	612.9
Property, net	$	1,827.20		$	320.1	$	2,225.90	$	56.7		$	4,429.90
Total assets	$	3,471.60		$	743.4	$	3,164.00	$	683.7		$	8,062.70
SALES VALUE PER SEGMENT:
	Year Ended December 31, 2013
(in millions)	Mexican			Mexican		Peruvian		Corporate, Other			Total
	Open-pit			IMMSA Unit		Operations		& Eliminations			Consolidated
Copper	$	2,365.50		$	48.4	$	2,289.30	$	(48.4	)	$	4,654.80
Molybdenum	242.2			—		147.9		—			390.1
Silver	242.7			110.1		79.7		(38.8		)	393.7
Zinc	—			200.3		—		—			200.3
Other	126.3			99.7		97.7		(9.7		)	314
Total	$	2,976.70		$	458.5	$	2,614.60	$	(96.9	)	$	5,952.90
	Year Ended December 31, 2012
(in millions)	Mexican			Mexican		Peruvian		Corporate, Other			Total
	Open-pit			IMMSA Unit		Operations		& Eliminations			Consolidated
Copper	$	2,604.90		$	62.3	$	2,532.00	$	(62.3	)	$	5,136.90
Molybdenum	271.3			—		179.2		—			450.5
Silver	280.5			161.5		113.6		(60.3		)	495.3
Zinc	—			195.9		—		—			195.9
Other	182.3			93.3		127.5		(12.4		)	390.7
Total	$	3,339.00		$	513	$	2,952.30	$	(135.0	)	$	6,669.30
	Year Ended December 31, 2011
(in millions)	Mexican			Mexican		Peruvian		Corporate, Other			Total
	Open-pit			IMMSA Unit		Operations		& Eliminations			Consolidated
Copper	$	2,509.60		$	57.2	$	2,720.00	$	(57.2	)	$	5,229.60
Molybdenum	310.8			—		233.3		—			544.1
Silver	248.1			184.2		121.2		(61.1		)	492.4
Zinc	—			209.8		—		—			209.8
Other	143.6			95		112		(7.8		)	342.8
Total	$	3,212.10		$	546.2	$	3,186.50	$	(126.1	)	$	6,818.70
NET SALES AND GEOGRAPHICAL INFORMATION:
Net sales to respective countries were as follows:
	Years Ended December 31,
(in millions)	2013			2012		2011
United States	$	1,031.20		$	1,567.40	$	2,103.70
Europe	1,057.50			1,365.10		1,292.10
Mexico	1,403.30			1,676.40		1,269.30
Peru	324.8			296.2		261.7
Brazil	471			449		598.5
Chile	366.1			443.5		515.8
Latin America, other	391.8			108.3		101.2
Asia	907.2			763.4		662.9
Derivative instruments	—			—		13.5
Total	$	5,952.90		$	6,669.30	$	6,818.70
PROVISIONAL SALES PRICE:
At December 31, 2013, the Company has recorded provisionally priced sales of copper at average forward prices per pound, and molybdenum at the year-end market price per pound.  These sales are subject to final pricing based on the average monthly LME or COMEX copper prices and Dealer Oxide molybdenum prices in the future month of settlement.
Following are the provisionally priced copper and molybdenum sales outstanding at December 31, 2013:
Copper	Priced at		Month of settlement
(million lbs.)	(per pound)
16.1	3.344		January through February 2014
Molybdenum	Priced at		Month of settlement
(million lbs.)	(per pound)
10.3	9.7		January 2014 through April 2014
Provisional sales price adjustments included in accounts receivable and net sales were as follows at December, 31 (in millions):
	As of December 31,
	2013			2012
Copper	$	1		$	2.9
Molybdenum	0.6			3.7
Total	$	1.6		$	6.6
Management believes that the final pricing of these sales will not have a material effect on the Company’s financial position or results of operations.
LONG-TERM SALES CONTRACTS:
The following are the significant outstanding long-term contracts:
Under the terms of a sales contract with Mitsui & Co. Ltd. (“Mitsui”), the Company was required to supply Mitsui with 48,000 tons of copper cathodes annually through 2013 to the Asian Market. Premium levels were agreed upon annually based on world market terms.  90,000 tons related to a prior contract (period 1994-2000) will be supplied as follows: 48,000 tons in 2014 and 42,000 tons in 2015.
In 2013, a new long term copper sales agreement was signed with Mitsui for five years, with shipments beginning in 2015. Mitsui and the Company will negotiate market terms and conditions for annual contracts no later than November 30 of the year prior to shipment. The contract considers the following annual volumes of copper cathodes; 6,000 tons for 2015 and 48,000 tons for each of the years from 2016 through 2019. The contract volume would increase by 24,000 tons the year after Tia Maria reaches full production capacity.  Failure to reach an agreement on market terms would cancel the annual contract but not the long-term agreement.  Under the terms of the agreement all shipments would be to Asia and there are no exclusivity rights for Mitsui or commissions included. This contract may be renewed for and additional five years, upon agreement of both parties.
Under the terms of a sales contract with Molibdenos y Metales, S.A., SPCC Peru Branch is required to supply 29,300 tons of molybdenum concentrates from 2014 through 2016.  This contract may be extended for one more calendar year during each October to maintain a three year period unless either party decides to terminate the agreement.  The sale price of the molybdenum concentrates is based on the monthly average of the high and low Metals Week Dealer Oxide quotation.  The roasting charge deduction is agreed based on international market terms.
Under the terms of a sales contract with Molymex, S.A. de C.V., Minera Mexico is required to supply at least the 85% of its molybdenum concentrates production from 2012 through 2015.  The sale price of the molybdenum concentrate is based on the monthly average of the high and low Metals Week Dealer Oxide quotation.  The roasting charge deduction is negotiated based on international market terms.

QUARTERLY_DATA_unaudited

QUARTERLY DATA (unaudited)	12 Months Ended
	Dec. 31, 2013
QUARTERLY DATA (unaudited)	'
QUARTERLY DATA (unaudited)	'
	NOTE 20-QUARTERLY DATA (unaudited)
	(in millions, except per share data)
		2013
		1st		2nd		3rd		4th		Year
	Net sales	$	1,623.00	$	1,410.20	$	1,384.50	$	1,535.20	$	5,952.90
	Gross profit	$	805.7	$	604.4	$	617	$	658.5	$	2,685.60
	Operating income	$	770	$	565.3	$	580.9	$	615.9	$	2,532.10
	Net income	$	497	$	374.1	$	345.6	$	407.5	$	1,624.20
	Net income attributable to SCC	$	495.4	$	372.7	$	344.2	$	406.2	$	1,618.50
	Per share amounts attributable to SCC:
	Net earnings basic and diluted	$	0.59	$	0.44	$	0.41	$	0.48	$	1.92
	Dividend per share	$	0.24	$	0.2	$	0.12	$	0.12	$	0.68
				2012
		1st		2nd		3rd (1)		4th		Year
	Net sales	$	1,805.90	$	1,659.90	$	1,552.40	$	1,651.10	$	6,669.30
	Gross profit	$	1,007.10	$	913.6	$	800.2	$	853.4	$	3,574.30
	Operating income	$	972.9	$	875.6	$	447.8	$	812.6	$	3,108.90
	Net income	$	623.6	$	565.3	$	219.3	$	533.2	$	1,941.40
	Net income attributable to SCC	$	621.4	$	563.5	$	217.9	$	531.8	$	1,934.60
	Per share amounts attributable to SCC:
	Net earnings basic and diluted	$	0.73	$	0.66	$	0.26	$	0.63	$	2.28
	Dividend per share (2)	$	0.54	$	0.53	$	0.24	$	2.75	$	4.06
	(1) The third quarter 2012 includes in operating income and expenses a discrete charge of $316.2 million for legal fees related to a shareholder derivative lawsuit.
	(2) Dividend paid in the first quarter of 2012 includes a cash dividend of $0.19 and a stock dividend of $0.35.
	Dividend paid in the fourth quarter of 2012 includes a one-time dividend related to the settlement of a shareholder derivative lawsuit. Please see Note 14. Stockholders’ Equity.

SUBSEQUENT_EVENTS

SUBSEQUENT EVENTS	12 Months Ended
	Dec. 31, 2013
SUBSEQUENT EVENTS	'
SUBSEQUENT EVENTS	'
	NOTE 21—SUBSEQUENT EVENTS
	DIVIDENDS:
	On January 30, 2014, the Board of Directors authorized a dividend of $0.12 per share paid on March 4, 2014, to shareholders of record at the close of business on February 18, 2014.

Schedule_II_Valuation_and_Qual

Schedule II Valuation and Qualifying Accounts and Reserves (in millions):	12 Months Ended
	Dec. 31, 2013
Schedule II Valuation and Qualifying Accounts and Reserves (in millions):	'
Schedule II Valuation and Qualifying Accounts and Reserves (in millions):	'
	3.  Schedule II
	Valuation and Qualifying Accounts and Reserves (in millions):
		Additions
	Reserve deducted in balance	Balance at	Charged to	Additions	Deduction/	Balance at
	sheet to which applicable:	beginning of	costs and		Application	end of period
		period	expenses
	Accounts Receivable:
	2013	—		0.3		0.3
	2012	—	—	—	—	—
	2011	—	—	—	—	—
	Notes issued under par:
	2013	47.3	1.1	—	—	46.2
	2012	25.4	0.5	22.4	—	47.3
	2011	25.9	0.5		—	25.4
	Deferred Tax Assets:
	2013	—			—	—
	2012	2.2			2.2	—
	2011	30			27.8	2.2

SUMMARY_OF_SIGNIFICANT_ACCOUNT1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Policies)	12 Months Ended
	Dec. 31, 2013
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:	'
Principles of consolidation	'
	Principles of consolidation—
	The consolidated financial statements include the accounts of subsidiaries of which the Company has voting control, in accordance with Accounting Standards Codification 810 Consolidation.  Such financial statements are prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”).
Use of estimates	'
	Use of estimates—
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period.  Significant items subject to such estimates and assumptions include the carrying value of ore reserves that are the basis for future cash flow estimates and amortization calculations; environmental, reclamation, closure and retirement obligations; estimates of recoverable copper in mill and leach stockpiles; asset impairments (including estimates of future cash flows); bad debts; inventory obsolescence; deferred and current income tax; valuation allowances for deferred tax assets; reserves for contingencies and litigation; and fair value of financial instruments.  Management bases its estimates on the Company’s historical experience and on various other assumptions that are believed to be reasonable under the circumstances.  Actual results could differ from those estimates.
Revenue recognition	'
	Revenue recognition—
	Substantially all of the Company’s copper is sold under annual or other longer-term contracts.
	Revenue is recognized when title passes to the customer.  The passing of title is based on terms of the contract, generally upon shipment.  Copper revenue is determined based on the monthly average of prevailing commodity prices according to the terms of the contracts.  The Company provides allowances for doubtful accounts based upon historical bad debt and claims experience and periodic evaluation of specific customer accounts.
	For certain of the Company’s sales of copper and molybdenum products, customer contracts allow for pricing based on a month subsequent to shipping, in most cases within the following three months and occasionally in some cases a few additional months.  In such cases, revenue is recorded at a provisional price at the time of shipment.  The provisionally priced copper sales are adjusted to reflect forward LME or COMEX copper prices at the end of each month until a final adjustment is made to the price of the shipments upon settlement with customers pursuant to the terms of the contract.  In the case of molybdenum sales, for which there are no published forward prices, the provisionally priced sales are adjusted to reflect the market prices at the end of each month until a final adjustment is made to the price of the shipments upon settlement with customers pursuant to the terms of the contract.
	These provisional pricing arrangements are accounted for separately from the contract as an embedded derivative instrument under ASC 815-30 “Derivatives and Hedging — Cash Flow Hedges.”  The Company sells copper in concentrate, anode, blister and refined form at industry standard commercial terms.  Net sales include the invoiced value and corresponding fair value adjustment of the related forward contract of copper, zinc, silver, molybdenum, acid and other metals.
Shipping and handling fees and costs	'
	Shipping and handling fees and costs—
	Amounts billed to customers for shipping and handling are classified as sales.  Amounts incurred for shipping and handling are included in cost of sales (exclusive of depreciation, amortization and depletion).
Cash and cash equivalents	'
	Cash and cash equivalents—
	Cash and cash equivalents include bank deposits, certificates of deposit and short-term investment funds with original maturities of three months or less at the date of purchase.  The carrying value of cash and cash equivalents approximates fair value.
Short-term investments	'
	Short-term investments—
	The Company accounts for short-term investments in accordance with ASC 320-10 “Investments Debt and Equity Securities — Recognition.”  The Company determines the appropriate classification of all short-term investments as held-to-maturity, available-for-sale or trading at the time of purchase and re-evaluates such classifications as of each balance sheet date.  Unrealized gains and losses on available-for-sale investments, net of taxes, are reported as a component of accumulated other comprehensive income (loss) in stockholders’ equity, unless such loss is deemed to be other than temporary.
Inventories	'
	Inventories—
	Metal inventories, consisting of work-in-process and finished goods, are carried at the lower of average cost or market.  Costs incurred in the production of metal inventories exclude general and administrative costs.
	Work-in-process inventories represent materials that are in the process of being converted into a saleable product.  Conversion processes vary depending on the nature of the copper ore and the specific mining operation.  For sulfide ores, processing includes milling and concentrating and results in the production of copper and molybdenum concentrates.
	Finished goods include saleable products (e.g., copper concentrates, copper anodes, copper cathodes, copper rod, molybdenum concentrate and other metallurgical products).
	Supplies inventories are carried at the lower of average cost less a reserve for obsolescence or market.
Long-term inventory - Leachable material	'
	Long-term inventory - Leachable material—
	The leaching process is an integral part of the mining operations carried out at the Company’s open-pit mines. The Company capitalizes the production cost of leachable material at its Toquepala, La Caridad and Buenavista mines recognizing it as inventory. The estimates of recoverable mineral content contained in the leaching dumps are supported by engineering studies.  As the production cycle of the leaching process is significantly longer than the conventional process of concentrating, smelting and electrolytic refining, the Company includes on its balance sheet, current leach inventory (included in work-in-process inventories) and long-term leach inventory.  The cost attributed to the leach material is charged to cost of sales generally over a five-year period (the average estimated recovery period based on the historical recovery percentages of each mine).
Property	'
	Property—
	Property is recorded at acquisition cost, net of accumulated depreciation and amortization.  Cost includes major expenditures for improvements and replacements, which extend useful lives or increase capacity and interest costs associated with significant capital additions.  Maintenance, repairs, normal development costs at existing mines, and gains or losses on assets retired or sold are reflected in earnings as incurred.
	Buildings and equipment are depreciated on the straight-line method over estimated lives from five to 40 years or the estimated life of the mine if shorter.
Mine development	'
	Mine development —
	Mine development includes primarily the cost of acquiring land rights to an exploitable ore body, pre-production stripping costs at new mines that are commercially exploitable, costs associated with bringing new mineral properties into production, and removal of overburden to prepare unique and identifiable areas outside the current mining area for such future production.  Mine development costs are amortized on a unit of production basis over the remaining life of the mines.
	There is a diversity of practices in the mining industry in the treatment of drilling and other related costs to delineate new ore reserves.  The Company follows the practices outlined in the next two paragraphs in its treatment of drilling and related costs.
	Drilling and other associated costs incurred in the Company’s efforts to delineate new resources, whether near-mine or Greenfield are expensed as incurred.  These costs are classified as mineral exploration costs.  Once the Company determines through feasibility studies that proven and probable reserves exist and that the drilling and other associated costs embody a probable future benefit that involves a capacity, singly or in combination with other assets, to contribute directly or indirectly to future net cash inflow, then the costs are classified as mine development costs.  These mine development costs incurred prospectively to develop the property are capitalized as incurred, until the commencement of production, and are amortized using the units of production method over estimated life of the ore body.  During the production stage, drilling and other related costs incurred to maintain production are included in production cost in the period in which they are incurred.
	Drilling and other related costs incurred in the Company’s efforts to delineate a major expansion of reserves at an existing production property are expensed as incurred.  Once the Company determines through feasibility studies that proven and probable incremental reserves exist and that the drilling and other associated costs embody a probable future benefit that involves a capacity, singly or in combination with other assets, to contribute directly or indirectly to future net cash inflow, then the costs are classified as mine development costs.  These incremental mine development costs are capitalized as incurred, until the commencement of production and amortized using the units of production method over the estimated life of the ore body.  A major expansion of reserves is one that increases total reserves at a property by approximately 10% or more.
	For the years ended December 31, 2013, 2012 and 2011, the Company did not capitalize any drilling and related costs.  The net balance of capitalized mine development costs at December 31, 2013 and 2012, were $36.2 million and $37.9 million, respectively.
Asset retirement obligations (reclamation and remediation costs)	'
	Asset retirement obligations (reclamation and remediation costs)—
	The fair value of a liability for asset retirement obligations is recognized in the period in which the liability is incurred.  The liability is measured at fair value and is adjusted to its present value in subsequent periods as accretion expense is recorded.  The corresponding asset retirement costs are capitalized as part of the carrying value of the related long-lived assets and depreciated over the asset’s useful life.
Intangible assets	'
	Intangible assets—
	Intangible assets include primarily the excess amount paid over the book value for investment shares and mining and engineering development studies.  Intangible assets are carried at acquisition costs, net of accumulated amortization and are amortized principally on a unit of production basis over the estimated remaining life of the mines.  Intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset may not be recoverable.
Debt issuance costs	'
	Debt issuance costs—
	Debt issuance costs, which are included in other assets, are amortized using the effective interest method over the term of the related debt.
Ore reserves	'
	Ore reserves—
	The Company periodically reevaluates estimates of its ore reserves, which represent the Company’s estimate as to the amount of unmined copper remaining in its existing mine locations that can be produced and sold at a profit.  Such estimates are based on engineering evaluations derived from samples of drill holes and other openings, combined with assumptions about copper market prices and production costs at each of the respective mines.
	The Company updates its estimate of ore reserves at the beginning of each year. In this calculation the Company uses current metal prices which are defined as the average metal price over the preceding three years.  The current price per pound of copper, as defined, was $3.65, $3.68 and $3.26 at the end of 2013, 2012 and 2011, respectively.  The ore reserve estimates are used to determine the amortization of mine development and intangible assets.
	Once the Company determines through feasibility studies that proven and probable reserves exist and that the drilling and other associated costs embody a probable future benefit that involves a capacity, singly or in combination with other assets, to contribute directly or indirectly to future net cash inflow, then the costs are classified as mine development costs and the Company discloses the related ore reserves.
Exploration	'
	Exploration—
	Tangible and intangible costs incurred in the search for mineral properties are charged against earnings when incurred.
Income taxes	'
	Income taxes—
	Provisions for income taxes are based on taxes payable or refundable for the current year and deferred taxes on temporary differences between the amount of taxable income and pretax financial income and between the tax bases of assets and liabilities and their reported amounts in the financial statements.  Deferred tax assets and liabilities are included in the financial statements at currently enacted income tax rates applicable to the period in which the deferred tax assets and liabilities are expected to be realized and settled as prescribed in ASC 740 “Income taxes.”  As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.  Deferred income tax assets are reduced by any benefits that, in the opinion of management, are more likely not to be realized.
	The Company classifies income tax-related interest and penalties as income taxes in the financial statements.
	The Company’s operations involve dealing with uncertainties and judgments in the application of complex tax regulations in multiple jurisdictions.  The final taxes paid are dependent upon many factors, including negotiations with taxing authorities in various jurisdictions and resolution of disputes arising from federal, state, and international tax audits.  The Company recognizes potential liabilities and records tax liabilities for anticipated tax audit issues in the U.S. and other tax jurisdictions based on its estimate of whether, and the extent to which, additional taxes will be due.  The Company follows the guidance of ASC 740 “Income taxes” to record these liabilities.  (See Note 7 “Income taxes” of the consolidated financial statements for additional information).  The Company adjusts these reserves in light of changing facts and circumstances; however, due to the complexity of some of these uncertainties, the ultimate resolution may result in a payment that is materially different from the Company’s current estimate of the tax liabilities.  If its estimate of tax liabilities proves to be less than the ultimate assessment, an additional charge to expense would result.  If payment of these amounts ultimately proves to be less than the recorded amounts, the reversal of the liabilities would result in tax benefits being recognized in the period when the Company determines the liabilities are no longer necessary.  The Company recognizes interest and penalties, if any, related to unrecognized tax benefits in income tax expense.
Foreign exchange	'
	Foreign exchange—
	The Company’s functional currency is the U.S. dollar. As required by local law, both the Peruvian Branch and Minera Mexico maintain their books of accounts in Peruvian nuevos soles and Mexican pesos, respectively.
	Foreign currency assets and liabilities are remeasured into U.S. dollars at current exchange rates except for non-monetary items such as inventory, property, intangible assets and other assets which are remeasured at historical exchange rates.  Revenues and expenses are generally translated at actual exchange rates in effect during the period, except for those items related to balance sheet amounts that are remeasured at historical exchange rates.  Gains and losses from foreign currency remeasurement are included in earnings of the period.
	Gains and (losses) resulting from foreign currency transactions are included in “Cost of sales (exclusive of depreciation, amortization and depletion).”
Derivative instruments	'
	Derivative instruments—
	The Company utilizes certain types of derivative financial instruments to enhance its ability to manage risks that exist as part of its ongoing business operations and to enhance its return on Company assets.  Derivative contracts are reflected as assets or liabilities in the balance sheet at their fair value.  The estimated fair value of the derivatives is based on market and/or dealer quotations and in certain cases valuation modeling.  From time to time the Company has entered into copper and zinc swap contracts to protect a fixed copper and zinc price for portions of its metal sales, hedging contracts to fix power prices for a portion of its production costs, interest rate swap agreements to hedge the interest rate risk exposure on certain of its bank obligations with variable interest rates and currency swap arrangements to ensure Mexican peso/ U.S. dollar conversion rates.  Gains and losses related to copper and zinc hedges are included in net sales, gain and losses related to power costs are included in cost of sales, all other gains and losses on derivative contracts are included in “Gain (loss) on derivative contracts” in the consolidated statement of earnings.
	The Company assesses the effectiveness of the derivative contracts periodically using either regression analysis or the dollar offset approach, both retrospectively and prospectively, to determine whether the hedging instruments have been highly effective in offsetting changes in fair value of the hedged items.
	Unrealized gains (losses) on cash flow derivatives that meet the requirements of hedge accounting are included in “other comprehensive income” in the consolidated balance sheet until the underlying transaction is settled at which point the unrealized amounts in other comprehensive income are reclassified into earnings in the same period.
Asset impairments	'
	Asset impairments -
	The Company evaluates long-term assets when events or changes in economic circumstances indicate that the carrying amount of such assets may not be recoverable.  These evaluations are based on business plans that are prepared using a time horizon that is reflective of the Company’s expectations of metal prices over its business cycle.  The Company is currently using a long-term average copper price of $3.00 per pound of copper and an average molybdenum price of $10.00 per pound, reflective of the current price environment, for impairment tests. The results of its impairment tests using these long-term copper and molybdenum prices show no impairment in the carrying value of their assets.
	In recent years its assumptions for long-term average prices resulted in stricter evaluations for impairment analysis than would the higher three year average prices for copper and molybdenum prices.  Should this situation reverse in the future with three year average prices below the long-term price assumption, the Company would assess the need to use the three year average prices in its evaluations.  The Company uses an estimate of the future undiscounted net cash flows of the related asset or asset group over the remaining life to measure whether the assets are recoverable and measures any impairment by reference to fair value.
Other comprehensive income	'
	Other comprehensive income—
	Comprehensive income represents changes in equity during a period, except those resulting from investments by owners and distributions to owners.  During the fiscal years ended December 31, 2013, 2012 and 2011, the components of “other comprehensive income (loss)” were the unrealized gain (loss) on cash flow hedge derivative instruments, the unrecognized gain (loss) on employee benefit obligations and realized gain (loss) included in net income.
Business segments	'
	Business segments-
	Company management views Southern Copper as having three reportable segments and manages it on the basis of these segments.  The segments identified by the Company are: 1) the Peruvian operations, which include the two open-pit copper mines in Peru and the plants and services supporting such mines, 2) the Mexican open-pit copper mines, which include La Caridad and Buenavista mine complexes and their supporting facilities and 3) the Mexican underground mining operations, which include five underground mines that produce zinc, copper, silver and gold, a coal mine and a zinc refinery. Please see Note 19 Segments and Related Information.
	Senior Management Officers of the Company focus on operating income as measure of performance to evaluate different segments, and to make decisions to allocate resources to the reported segments.

SHORTTERM_INVESTMENTS_Tables

SHORT-TERM INVESTMENTS: (Tables)	12 Months Ended
	Dec. 31, 2013
SHORT-TERM INVESTMENTS:	'
Schedule of short-term investments	'
	Short-term investments were as follows ($ in millions):
		At December 31,
		2013			2012
	Trading securities	$	202.6		$	127.8
	Weighted average interest rate	3.78		%	1.87		%
	Available-for-sale	5.7			6.5
	Weighted average interest rate	0.42		%	0.43		%
	Total	$	208.3		$	134.3
Summary of activities in short-term investments	'
	The following table summarizes the activity of these investments by category (in millions):
		Years ended December 31,
		2013			2012
	Trading:
	Interest earned	$	5.2		$	3.1
	Unrealized gain (loss) at December 31,	$	(1.9	)	$	2.4
	Available-for-sale:
	Interest earned	(*		)	$	0.1
	Investment redeemed	$	0.8		$	1.9
	(*) Less than $0.1 million
Schedule of contractual maturities of the Company's available for sale debt securities	'
	At December 31, 2013 and 2012, contractual maturities of the available-for-sale debt securities are as follows (in millions):
		2013			2012
	One year or less	$	0.4		$	0.4
	Maturing after one year through five years	—			—
	Maturing after five years through ten years	0.2			—
	Due after 10 years	5.1			6.1
	Total debt securities	$	5.7		$	6.5

INVENTORIES_Tables

INVENTORIES: (Tables)	12 Months Ended
	Dec. 31, 2013
INVENTORIES:	'
Schedule of inventories	'
		As of December 31,
	(in millions)	2013		2012
	Inventory, current:
	Metals at lower of average cost or market:
	Finished goods	$	84.2	$	101.1
	Work-in-process	305.4		310.8
	Supplies at average cost	304.3		284.2
	Total current inventory	$	693.9	$	696.1
	Inventory, long-term:
	Long-term leach stockpiles	$	395.2	$	249.4

PROPERTY_Tables

PROPERTY: (Tables)	12 Months Ended
	Dec. 31, 2013
PROPERTY:	'
Schedule of major classes of property, plant and equipment	'
		As of December 31,
	(in millions)	2013			2012
	Buildings and equipment	$	8,107.20		$	7,497.30
	Construction in progress	2,567.00			1,617.60
	Mine development	250.7			250.7
	Land, other than mineral	61.8			46.7
	Total property	10,986.70			9,412.30
	Accumulated depreciation, amortization and depletion	(4,510.5		)	(4,255.6		)
	Total property, net	$	6,476.20		$	5,156.70

INTANGIBLE_ASSETS_Tables

INTANGIBLE ASSETS: (Tables)	12 Months Ended
	Dec. 31, 2013
INTANGIBLE ASSETS:	'
Schedule of major classes of intangible assets and goodwill	'
		As of December 31,
	(in millions)	2013			2012
	Mining concessions	$	121.2		$	121.2
	Mine engineering and development studies	6			6
	Software	12.2			8.9
		139.4			136.1
	Accumulated amortization	(46.2		)	(43.8		)
	Goodwill	17			17
	Intangible assets, net	$	110.2		$	109.3
Schedule of amortization of intangibles in the last three years and estimated amortization for future periods	'
	Amortization of intangibles in the last three years and estimated amortization are as follows (in millions):
	Amortization expense:
	2013	$	2.4
	2012	$	2.2
	2011	$	2.1
	Estimated amortization expense:
	2014-2018	$	9.1
	Average annual	$	1.8

INCOME_TAXES_Tables

INCOME TAXES: (Tables)	12 Months Ended
	Dec. 31, 2013
INCOME TAXES:	'
Components of the provision for income taxes	'
		Years ended December 31,
	(in millions)	2013			2012			2011
	U.S. federal and state:
	Current	$	—		$	(0.1	)	$	(2.4	)
	Deferred	(139.3		)	(108.6		)	(45.3		)
	Uncertain tax positions	—			147.4			(0.4		)
		(139.3		)	38.7			(48.1		)
	Foreign (Peru and Mexico):
	Current	866.3			1,025.10			1,238.70
	Deferred	42.3			17.1			(86.3		)
		908.6			1,042.20			1,152.40
	Total provision for income taxes	$	769.3		$	1,080.90		$	1,104.30
Schedule of source of income	'
		For the years ended December 31,
	(in millions)	2013			2012			2011
	Earnings by location:
	U.S.	$	0.1		$	(0.1	)	$	(1.1	)
	Foreign
	Peru	773.8			846			1,351.90
	Mexico	1,598.70			2,127.60			2,097.90
		2,372.50			2,973.60			3,449.80
	Earnings before taxes on income	$	2,372.60		$	2,973.50		$	3,448.70
Reconciliation of the statutory income tax rate to the effective tax rate	'
	The reconciliation of the statutory income tax rate to the effective tax rate is as follows (in percentage points):
		For the years ended December 31,
		2013		2012		2011
	Expected tax	30	%	30	%	30	%
	Effect of income taxed at a rate other than the statutory rate	1.7		1.6		4.3
	Percentage depletion	(5.0	)	(4.2	)	(4.0	)
	Other permanent differences	3.5		3.7		1.2
	Peru tax on net income deemed distributed	1.2		1.3		1.3
	Special mining tax	2		1.6		0.5
	Increase (decrease) in unrecognized tax benefits for uncertain tax positions	—		5		—
	Repatriated foreign earnings	(1.4	)	(1.7	)	2.1
	Amounts (over) / under provided in prior years	0.4		(0.6	)	(3.5	)
	Other	—		(0.4	)	0.1
	Effective income tax rate	32.4	%	36.3	%	32	%
Schedule of deferred tax assets and liabilities	'
		As of December 31,
	(in millions)	2013			2012
	Assets:
	Inventories	$	18.7		$	23.6
	Capitalized exploration expenses	29.4			24.4
	U.S. foreign tax credit carryforward	280			202.3
	U.S tax effect of Peruvian deferred tax liability	68			33.4
	Reserves	35			77.5
	Mexican tax loss carryforward	—			26.9
	Labor share buyback	—			30
	Other	27.9			32.6
	Total deferred tax assets	459			450.7
	Liabilities:
	Property, plant and equipment	(105.8		)	(125.0		)
	Deferred charges	(79.6		)	(81.6		)
	Mexican tax on consolidated dividends	(31.5		)	(34.6		)
	Outside basis difference	(7.4		)	(41.3		)
	Other	(0.1		)	(0.5		)
	Total deferred tax liabilities	(224.4		)	(283.0		)
	Total net deferred tax assets / (liabilities)	$	234.6		$	167.7
Summary of expire of foreign tax credits	'
	Year	Amount
	2016	$	19
	2018	70.5
	2020	27.9
	2021	11.7
	2022	84.1
	2023	66.8
	Total	$	280
Schedule of reconciliation of amount of unrecognized tax benefits	'
	The total amount of unrecognized tax benefits in 2013, 2012 and 2011, was as follows (in millions):
		2013			2012			2011
	Unrecognized tax benefits, opening balance	$	221.2		$	70.6		$	75.7
	Gross increases — tax positions in prior period	—			39.7			21.6
	Gross decreases — tax positions in prior period	—			0.2			(26.8		)
	Gross increases — current-period tax positions	—			110.7			0.1
		—			150.6			(5.1		)
	Unrecognized tax benefits, ending balance	$	221.2		$	221.2		$	70.6

WORKERS_PARTICIPATION_Tables

WORKERS' PARTICIPATION: (Tables)	12 Months Ended
	Dec. 31, 2013
WORKERS' PARTICIPATION:	'
Workers' participation expense	'
	Workers’ participation expense for the three years ended December 31, 2013 was as follows (in millions):
		2013		2012		2011
	Current	$	201.6	$	263.1	$	274.7
	Deferred	31.4		14.3		(18.0		)
		$	233	$	277.4	$	256.7

ASSET_RETIREMENT_OBLIGATION_Ta

ASSET RETIREMENT OBLIGATION: (Tables)	12 Months Ended
	Dec. 31, 2013
ASSET RETIREMENT OBLIGATION:	'
Summary of the asset retirement obligation activity	'
	The following table summarizes the asset retirement obligation activity for the two years ended December 31, 2013 and 2012 (in millions):
		2013			2012
	Balance as of January 1	$	118.2		$	62
	Changes in estimates	—			27.4
	Additions	—			25.1
	Closure payments	(1.5		)	(0.3		)
	Accretion expense	8.1			4
	Balance as of December 31,	$	124.8		$	118.2

FINANCING_Tables

FINANCING: (Tables)	12 Months Ended
	Dec. 31, 2013
FINANCING:	'
Schedule of long-term debt	'
		Issuance			Face		As of December 31,
	(in millions)	Date		Due Date	amount		2013		2012
	1.763% Mitsui credit agreement	1999		2013	$	100	$	—	$	10
	6.375% Senior unsecured notes	2005		2015	200		199.7		199.6
	5.375% Senior unsecured notes	2010		2020	400		398.6		398.4
	3.500% Senior unsecured notes	2012		2022	300		299.1		299
	9.250% Yankee Bonds	1998		2028	125		51.1		51.1
	7.500% Senior unsecured notes	2005/2006		2035	1,000		985.5		985.3
	6.750% Senior unsecured notes	2010		2040	1,100		1,092.10		1,092.00
	5.250% Senior unsecured notes	2012		2042	1,200		1,178.80		1,178.50
	Total debt						4,204.90		4,213.90
	Less, current portion						—		(10.0		)
	Total long-term debt						$	4,204.90	$	4,203.90
Schedule of aggregate maturities of the outstanding borrowings	'
	Aggregate maturities of the outstanding borrowings at December 31, 2013, are as follows:
	Years	Principal Due (*)
		(in millions)
	2014	—
	2015	$	200
	2016	—
	2017	—
	Thereafter	4,051.20
	Total	$	4,251.20
	(*)Total debt maturities do not include the debt discount valuation account of $46.3 million.

BENEFIT_PLANS_Tables

BENEFIT PLANS: (Tables)	12 Months Ended
	Dec. 31, 2013
Post retirement defined benefit plan	'
Components of net periodic benefit costs	'
Schedule of the components of net periodic benefit costs	'
		Years ended December 31,
	(in millions)	2013			2012			2011
	Service cost	$	1.1		$	1		$	0.9
	Interest cost	1			1.1			1.2
	Expected return on plan assets	(3.4		)	(3.6		)	(3.5		)
	Amortization of transition assets, net	—			—			(0.1		)
	Amortization of net actuarial loss	(0.7		)	(0.8		)	(1.3		)
	Amortization of net loss/(gain)	0.2			0.1			0.1
	Net periodic benefit cost	$	(1.8	)	$	(2.2	)	$	(2.7	)
Schedule of changes in the benefit obligation and plan assets, the funded status of the plans and the amount recognized in balance sheet and accumulated other comprehensive income	'
		As of December 31,
	(in millions)	2013			2012
	Change in benefit obligation:
	Projected benefit obligation at beginning of year	$	27.9		$	25.2
	Service cost	1.1			1
	Interest cost	1			1.1
	Actuarial gain census	(0.3		)	(0.1		)
	Benefits paid	(2.2		)	(2.0		)
	Actuarial (gain)/loss	0.3			1
	Actuarial gain assumption changes	(1.0		)	0.8
	Inflation adjustment	—			0.9
	Projected benefit obligation at end of year	$	26.8		$	27.9
	Change in plan assets:
	Fair value of plan assets at beginning of year	$	61.9		$	55.8
	Actual return on plan assets	(0.2		)	4.9
	Employer contributions	0.1			(0.6		)
	Benefits paid	(0.9		)	(1.1		)
	Currency exchange rate adjustment	(0.3		)	2.9
	Fair value of plan assets at end of year	$	60.6		$	61.9
	Funded status at end of year:	$	33.8		$	34
	ASC-715 amounts recognized in statement of financial position consists of:
	Non-current assets	$	33.8		$	34
	Total	$	33.8		$	34
	ASC-715 amounts recognized in accumulated other comprehensive income (net of income taxes of $1.5 million and $2.9 million in 2013 and 2012, respectively) consists of:
	Net loss (gain)	$	(1.7	)	$	(3.7	)
	Prior service cost		0.1			0.1
	Total	$	(1.6	)	$	(3.6	)
Schedule of changes in accumulated other comprehensive income	'
	(in millions)	2013			2012
	Reconciliation of accumulated other comprehensive income:
	Accumulated other comprehensive income at beginning of plan year	$	(3.6	)	$	(3.8	)
	Net loss/(gain) amortized during the year	0.4			0.5
	Net loss/(gain) occurring during the year	1.5			0.3
	Currency exchange rate adjustment	0.1			(0.6		)
	Net adjustment to accumulated other comprehensive income (net of income taxes of $(1.3) million and $(0.5) million in 2013 and 2012, respectively)	2			0.2
	Accumulated other comprehensive income at end of plan year	$	(1.6	)	$	(3.6	)
Summary of the amounts in accumulative other comprehensive income amortized and recognized as a component of net periodic benefit cost, net of tax	'
	(in millions)	2013			2012
	Net loss / (gain)	$	1.5		$	0.3
	Amortization of net (loss) gain	0.4			0.5
	Total amortization expenses	$	1.9		$	0.8
Scheduled maturities of the benefits expected to be paid in each of the next five years, and thereafter	'
	Years	Expected
		Benefit Payments
		(in millions)
	2014	$	1.7
	2015	1.3
	2016	1.3
	2017	1.3
	2018	1.3
	2019 to 2023	7.4
	Total	$	14.3
Post-retirement Health Care Plan	'
Components of net periodic benefit costs	'
Schedule of the components of net periodic benefit costs	'
		Years ended December 31,
	(in millions)	2013			2012			2011
	Service cost	$	—		$	—		$	—
	Interest cost	1.7			1.5			3.3
	Amortization of transition obligation	—			—			1.3
	Amortization of prior service cost/ (credit)	—			(0.3		)	(10.0		)
	Net periodic benefit cost	$	1.7		$	1.2		$	(5.4	)
Schedule of changes in the benefit obligation and plan assets, the funded status of the plans and the amount recognized in balance sheet and accumulated other comprehensive income	'
		As of December 31,
	(in millions)	2013			2012
	Change in benefit obligation:
	Projected benefit obligation at beginning of year	$	27.2		$	20.3
	Interest cost	1.7			1.5
	Actuarial loss/ (gain) — claims cost	—			(0.2		)
	Benefits paid	(0.1		)	(1.5		)
	Actuarial (gain)/loss	(6.8		)	5.6
	Actuarial gain assumption changes	(0.2		)	0.1
	Inflation adjustment	(0.1		)	1.4
	Projected benefit obligation at end of year	$	21.7		$	27.2
	Change in plan assets:
	Fair value of plan assets at beginning of year	$	—		$	—
	Employer contributions	0.1			0.1
	Benefits paid	(0.1		)	(0.1		)
	Fair value of plan assets at end of year	$	—		$	—
	Funded status at end of year:	$	(21.7	)	$	(27.2	)
	ASC-715 amounts recognized in statement of financial position consists of:
	Current liabilities	$	(0.1	)	$	(0.1	)
	Non-current liabilities	(21.6		)	(27.1		)
	Total	$	(21.7	)	$	(27.2	)
	ASC-715 amounts recognized in accumulated other comprehensive income consists of:
	Net loss (gain)	$	(4.3	)	$	(0.1	)
	Prior service cost (credit)	(0.1		)	(0.1		)
	Total (net of income taxes of $ 3.0 million and $0.2 million in 2013 and 2012, respectively)	$	(4.4	)	$	(0.2	)
Schedule of changes in accumulated other comprehensive income	'
		As of December 31,
	(in millions)	2013			2012
	Reconciliation of accumulated other comprehensive income:
	Accumulated other comprehensive income at beginning of plan year	$	(0.3	)	$	(3.4	)
	Net loss/(gain) occurring during the year	(4.1		)	3.2
	Amortization of transition obligation	—			0.2
	Currency exchange rate adjustment	—			(0.3		)
	Net adjustment to accumulated other comprehensive income (net of income taxes of $ 2.8 million and $(2.4) million in 2013 and 2012, respectively)	(4.1		)	3.1
	Accumulated other comprehensive income at end of plan year	$	(4.4	)	$	(0.3	)
Summary of the amounts in accumulative other comprehensive income amortized and recognized as a component of net periodic benefit cost, net of tax	'
		As of December 31,
	(in millions)	2013			2012
	Net loss / (gain)	$	(4.1	)	$	3.2
	Amortization of transition obligation	—			0.2
	Total amortization expenses	$	(4.1	)	$	3.4
Scheduled maturities of the benefits expected to be paid in each of the next five years, and thereafter	'
	Year	Expected
		Benefit Payments
		(in millions)
	2014	$	1.4
	2015	1.5
	2016	1.6
	2017	1.7
	2018	1.8
	2019 to 2023	10.5
	Total	$	18.5
Expatriate Plan | Post retirement defined benefit plan	'
Components of net periodic benefit costs	'
Schedule of assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost	'
		2013		2012		2011
	Expatriate Plan
	Discount rate	4.25	%	3.35	%	3.95	%
	Expected long-term rate of return on plan asset	4.5	%	4.5	%	4.5	%
	Rate of increase in future compensation level	N/A		N/A		N/A
Expatriate Plan | Post-retirement Health Care Plan	'
Components of net periodic benefit costs	'
Schedule of assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost	'
		2013		2011		2010
	Expatriate health plan
	Discount rate	4.25	%	3.35	%	3.95	%
Mexican Health Plan | Post retirement defined benefit plan	'
Components of net periodic benefit costs	'
Schedule of assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost	'
		2013		2012		2011
	Mexican Plan(*)
	Discount rate	7.1	%	6.5	%	7.5	%
	Expected long-term rate of return on plan asset	7.1	%	6.5	%	7.5	%
	Rate of increase in future compensation level	4	%	4	%	4.5	%
	(*)These rates are based on Mexican pesos as pension obligations are denominated in pesos.
Schedule of asset mix of the investment portfolio	'
		2013		2012
	Asset category:
	Equity securities	74	%	73	%
	Treasury bills	26	%	27	%
		100	%	100	%
Mexican Health Plan | Post-retirement Health Care Plan	'
Components of net periodic benefit costs	'
Schedule of assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost	'
		2013		2011		2010
	Mexican health plan
	Weighted average discount rate	7.1	%	6.5	%	7.5	%
Schedule of effects of one percentage-point change in assumed other benefits cost trend rates	'
		One Percentage Point
	(in millions)	Increase			Decrease
	Effect on total service and interest cost components	$	1.4		$	1.3
	Effect on the post-retirement benefit obligation	$	18.1		$	22.4

COMMITMENTS_AND_CONTINGENCIES_

COMMITMENTS AND CONTINGENCIES: (Tables)	12 Months Ended
	Dec. 31, 2013
COMMITMENTS AND CONTINGENCIES:	'
Schedule of environmental capital expenditures	'
	Environmental capital expenditures in years 2013, 2012 and 2011, were as follows (in millions):
		2013		2012		2011
	Peruvian operations	$	20.9	$	6.7	$	2.5
	Mexican operations	39.8		20.7		11.5
	Total	$	60.7	$	27.4	$	14

STOCKHOLDERS_EQUITY_Tables

STOCKHOLDERS' EQUITY: (Tables)	12 Months Ended
	Dec. 31, 2013
Share based compensation plan	'
Schedule of activity in treasury stock	'
	Activity in treasury stock in the years 2013 and 2012 was as follows (in millions):
		2013			2012
	Southern Copper common shares
	Balance as of January 1,	$	729.8		$	734.1
	Purchase of shares	281.4			147.3
	Stock dividend distribution	—			(151.4		)
	Used for corporate purposes	(0.2		)	(0.2		)
	Balance as of December 31,	1,011.00			729.8
	Parent Company (Grupo Mexico) common shares
	Balance as of January 1,	189			163.7
	Other activity, including dividend, interest and currency translation effect	16.6			25.3
	Balance as of December 31,	205.6			189
	Treasury stock balance as of December 31,	$	1,216.60		$	918.8
Schedule of share repurchase program activity	'
	Period					Total Number		Average		Total Number of	Maximum	Total Cost
						of Shares		Price		Shares Purchased	Number of	($ in
								Paid per		as Part of Publicly	Shares that May
											Yet Be
											Purchased
											Under the Plan
	From		To			Purchased		Share		Announced Plan	@ $28.71 (*)	millions)
	2008:00:00					28,510,150		$	13.49	28,510,150		$	384.7
	2009:00:00					4,912,000		14.64		33,422,150		71.9
	2010:00:00					15,600		29.69		33,437,750		0.5
	2011:00:00					9,034,400		30.29		42,472,150		273.7
	2012:00:00					4,442,336		33.17		46,914,486		147.3
	2013:00:00
	4/1/13		4/30/13			1,500		32.96		46,915,986		0.1
	5/1/13		5/31/13			807,100		32.33		47,723,086		26.1
	6/1/13		6/30/13			1,350,000		29.05		49,073,086		39.2
	Total second quarter					2,158,600		30.28				65.4
	7/1/13			7/31/13		1,300,000		27.6		50,373,086		35.9
	8/1/13			8/31/13		641,400		26.68		51,014,486		17.1
	9/1/13			9/30/13		204,012		27.65		51,218,498		5.6
	Total third quarter					2,145,412		27.33				58.6
	10/1/13			10/31/13		1,552,100		27.68		52,770,598		42.9
	11/1/13			11/30/13		2,446,490		26.49		55,217,088		64.8
	12/1/13			12/31/13		1,942,398		25.58		57,159,486		49.7
	Total fourth quarter 2013					5,940,988		26.5				157.4
	Total purchased					57,159,486		$	20.29		29,275,745	$	1,159.50
	(*) NYSE closing price of SCC common shares at December 31, 2013
Schedule of activity in Directors' Stock Award Plan	'
		2013		2012
	Total SCC shares reserved for the plan	600,000		600,000
	Total shares granted at January 1,	(285,600	)	(271,200	)
	Granted in the period	(12,000	)	(14,400	)
	Total shares granted at December 31,	(297,600	)	(285,600	)
	Remaining shares reserved	302,400		314,400
Employee Stock Purchase Plan	'
Share based compensation plan	'
Schedule of stock based compensation expense and unrecognized compensation expense	'
		2013			2012			2011
	Stock based compensation expense	$	2.1		$	2.1		$	2.1
	Unrecognized compensation expense	$	2.1		$	4.2		$	6.3
Schedule of stock award activity of the Employee Stock Purchase Plan	'
		Shares		Unit Weighted Average
				Grant Date Fair Value
	Outstanding shares at January 1, 2013	6,955,572		$	1.16
	Granted	—		—
	Exercised	(2,474,814	)	1.16
	Forfeited	(31,159	)	1.16
	Outstanding shares at December 31, 2013	4,449,599		1.16
	Outstanding shares at January 1, 2012	7,270,341		1.16
	Granted	—		—
	Exercised	(220,430	)	1.16
	Forfeited	(94,339	)	1.16
	Outstanding shares at December 31, 2012	6,955,572		$	1.16
New Employee Stock Purchase Plan	'
Share based compensation plan	'
Schedule of stock based compensation expense and unrecognized compensation expense	'
		2013			2012			2011
	Stock based compensation expense	$	0.6		$	0.6		$	0.6
	Unrecognized compensation expense	$	2.6		$	3.2		$	3.8
Schedule of stock award activity of the Employee Stock Purchase Plan	'
		Shares		Unit Weighted Average
				Grant Date Fair Value
	Outstanding shares at January 1, 2013	2,944,742		$	2.05
	Granted	226,613		2.05
	Exercised	(38,098	)	2.05
	Forfeited	(120,793	)	2.05
	Outstanding shares at December 31, 2013	3,012,464		2.05
	Outstanding shares at January 1, 2012	3,807,146		2.05
	Granted	—		—
	Exercised	(772,850	)	2.05
	Forfeited	(89,554	)	2.05
	Outstanding shares at December 31, 2012	2,944,742		$	2.05

DERIVATIVE_INSTRUMENTS_Tables

DERIVATIVE INSTRUMENTS: (Tables)	12 Months Ended
	Dec. 31, 2013
DERIVATIVE INSTRUMENTS:	'
Schedule of the copper derivative activity related to copper sales transactions	'
		2012		2011
	Zero cost collar contracts:
	Pounds (in millions)	46.3		423.3
	Average LME cap price	$	5.18	$	3.63
	Average LME floor price	$	3.5	$	2.27
	Swap contracts:
	Pounds (in millions)	—		390.8
	Weighted average COMEX price	—		$	3.46
	Realized gain (loss) on copper derivatives	—		$	13.5

FINANCIAL_INSTRUMENTS_Tables

FINANCIAL INSTRUMENTS: (Tables)	12 Months Ended
	Dec. 31, 2013
FINANCIAL INSTRUMENTS:	'
Schedule of carrying amount and estimated fair values of the Company's financial instruments	'
	Consequently, such financial instruments are not included in the following table that provides information about the carrying amounts and estimated fair values of other financial instruments that are not measured at fair value in the consolidated balance sheet as of December 31, 2013 (in millions):
		Balance at December 31, 2013
		Carrying Value		Fair Value
	Liabilities:
	Long-term debt	$	4,204.90	$	4,088.80
Schedule of fair values of assets and liabilities measured at fair value on a recurring basis	'
	Fair values of assets and liabilities measured at fair value on a recurring basis were calculated as of December 31, 2013 and 2012, as follows (in millions):
		Fair Value at Measurement Date Using:
	Description	Fair Value		Quoted prices in		Significant		Significant
		as of		active markets for		other		unobservable
		December		identical assets		observable		inputs
		31, 2013		(Level 1)		inputs		(Level 3)
						(Level 2)
	Assets:
	Short term investment:
	- Trading securities	$	202.6	$	202.6
	- Available-for-sale debt securities:
	Corporate bonds	0.4				$	0.4
	Asset backed securities	0.1				0.1
	Mortgage backed securities	5.2				5.2
	Accounts receivable:
	- Derivatives - Not classified as hedges:
	Provisionally priced sales:
	Copper	53.9		53.9
	Molybdenum	100.2		100.2		—		—
	Total	$	362.4	$	356.7	$	5.7	$	—
		Fair Value at Measurement Date Using:
	Description	Fair Value		Quoted prices in		Significant		Significant
		as of		active markets for		other		unobservable
		December		identical assets		observable		inputs
		31, 2012		(Level 1)		inputs		(Level 3)
						(Level 2)
	Assets:
	Short term investment:
	- Trading securities	$	127.8	$	127.8
	- Available-for-sale debt securities:
	Corporate bonds	0.4				$	0.4
	Asset backed securities	0.1				0.1
	Mortgage backed securities	6				6
	Accounts receivable:
	- Derivatives - Not classified as hedges:
	Provisionally priced sales:
	Copper	70.8		70.8
	Molybdenum	102.9		102.9		—		—
	Total	$	308	$	301.5	$	6.5	$	—

CONCENTRATION_OF_RISK_Tables

CONCENTRATION OF RISK: (Tables)	12 Months Ended
	Dec. 31, 2013
CONCENTRATION OF RISK:	'
Schedule of concentration risk for cash equivalents invested	'
	At December 31, 2013, SCC had invested its cash and cash equivalents as follows:
					% of total		% in one institution
	Country	$ in million			cash (1)		of country		of total cash
	United States	$	1,020.00		54.2	%	45.8	%	24.9	%
	Peru	94			5	%	73.7	%	3.7	%
	Mexico	147.1			7.8	%	95.1	%	7.4	%
	Switzerland	619.9			33	%	100	%	33	%
	Total cash and short-term investment	$	1,881.00		100	%
	(1)               98.7% of the Company’s cash is in U.S. dollars.
Schedule of company's largest customers as percentage of accounts receivable and total sales	'
		2013		2012		2011
	Accounts receivable trade as of December 31,
	Five largest customers	37.1	%	40	%	35.9	%
	Largest customer	12.2	%	10.4	%	10.8	%
	Total sales in year
	Five largest customers	28.7	%	28.8	%	28.7	%
	Largest customer	8.4	%	7.4	%	7.3	%

RELATED_PARTY_TRANSACTIONS_Tab

RELATED PARTY TRANSACTIONS: (Tables)	12 Months Ended
	Dec. 31, 2013
Related party transactions	'
Receivable and payable balances with related parties	'
	Receivable and payable balances with related parties are shown below (in millions):
		As of December 31,
		2013		2012
	Related parties receivable current:
	Grupo Mexico, S.A.B de C.V. (“Grupo Mexico”) and affiliates	$	0.8	$	1.8
	Mexico Generadora de Energia S. de R.L. (“MGE”)	18.8		—
	Compania Perforadora Mexico S.A.P.I. de C.V.	0.7		0.5
	Compania Minera Coimolache S.A.	17.2		23.4
	Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	0.6		—
		$	38.1	$	25.7
	Related parties receivable non-current:
	MGE	$	161.2	$	184
	Related parties payable:
	Grupo Mexico and affiliates	$	3.3	$	—
	MGE	14.4		—
	Asarco LLC	6.2		15.3
	Higher Technology S.A.C.	0.1		0.2
	Breaker, S.A. de C.V	0.3		—
	Sempertrans and affiliates	0.1		—
	Mexico Transportes Aereos S.A. de C.V. (“Mextransport”)	0.6		0.1
	Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	—		2.1
	Ferrocarril Mexicano S.A. de C.V.	3.3		2.6
		$	28.3	$	20.3
Grupo Mexico and its affiliates	'
Related party transactions	'
Purchase and sales activities with related parties	'
	The following table summarize the purchase and sale activities with Grupo Mexico and its affiliates in 2013, 2012 and 2011 (in millions):
		2013		2012		2011
	Purchase activity
	Grupo Mexico	$	13.8	$	13.9	$	13.9
	Ferrocarril Mexicano, S.A de C.V.	19.7		13.9		11.6
	Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	54.4		49.5		38.2
	Compania Perforadora Mexico S.A.P.I. de C.V.	6.1		2.2		1.8
	MGE	14.4		—		—
	Asarco LLC	98		58.6		23.4
	Total Purchases	$	206.4	$	138.1	$	88.9
	Sales activity
	Asarco	$	88.7	$	23.5	$	68.8
	Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates	0.8		0.5		0.5
	Compania Perforadora Mexico S.A.P.I. de C.V.	0.6		—		0.2
	MGE	27.3		—		—
	Total	$	117.4	$	24	$	69.5
Companies with relationship to the controlling group	'
Related party transactions	'
Purchase and sales activities with related parties	'
	The following table summarize the purchase and sales activities with other Larrea family companies in 2013, 2012 and 2011 (in millions):
		2013		2012		2011
	Purchase activity
	Mexico Compania de Productos Automotrices, S.A. de C.V.	$	—	$	—	$	0.2
	Mextransport	2.7		2.7		2.8
	Total purchase	$	2.7	$	2.7	$	3
	Sales activity
	Mextransport	$	0.3	$	0.9	$	—
Companies with relationship to SCC executive officers' families	'
Related party transactions	'
Purchase activity with related parties	'
	The following table summarize the purchase activity with companies with relationships to SCC executive officers’ families in 2013, 2012 and 2011 (in millions):
		2013		2012		2011
	Higher Technology S.A.C.	$	2.2	$	3.1	$	1.9
	Servicios y Fabricaciones Mecanicas S.A.C.	0.4		0.2		0.6
	Sempertrans	1.1		0.3		0.2
	PIGOBA, S.A. de C.V.	0.3		0.8		0.2
	Breaker, S.A. de C.V.	3.9		2.3		5.3
	Total purchased	$	7.9	$	6.7	$	8.2
Equity investment in affiliate	'
Related party transactions	'
Conditions and balance of loan guarantee for related party	'
	Conditions and balance of the loan as of December 31, 2013 are as follows (in millions):
		Loan
	Total loan granted	$	56.6
	Interest rate	6 months Libor + 3%
		(approximately 3.35%)
	Remaining balance at December 31, 2013	$	17.2
	Interest (in millions):
		Years ended December 31,
		2013		2012
	Interest earned	$	0.9	$	1.9

SEGMENT_AND_RELATED_INFORMATIO1

SEGMENT AND RELATED INFORMATION: (Tables)	12 Months Ended
	Dec. 31, 2013
SEGMENT AND RELATED INFORMATION:	'
Schedule of income and assets by segments	'
		Year Ended December 31, 2013
		(in millions)
		Mexican			Mexican		Peruvian		Corporate,			Consolidated
		Open-pit			IMMSA		Operations		other and
					Unit				eliminations
	Net sales outside of segments	$	2,976.70		$	361.6	$	2,614.60	$	—		$	5,952.90
	Intersegment sales	—			96.9		—		(96.9		)	—
	Cost of sales (exclusive of depreciation, amortization and depletion)	1,308.90			320.7		1,358.60		(116.9		)	2,871.30
	Selling, general and administrative	35.4			15.1		49.8		2.3			102.6
	Depreciation, amortization and depletion	178.9			31		177.2		8.8			395.9
	Exploration	3.2			27.2		20.6		—			51
	Operating income	$	1,450.30		$	64.5	$	1,008.40	$	8.9		2,532.10
	Less:
	Interest, net											(176.6		)
	Other income (expense)											17.1
	Income taxes											(769.3		)
	Equity earnings of affiliate											20.9
	Non-controlling interest											(5.7		)
	Net income attributable to SCC											$	1,618.50
	Capital expenditures	$	1,209.90		$	60.6	$	372.3	$	60.5		$	1,703.30
	Property, net	$	3,579.90		$	378.2	$	2,451.40	$	66.7		$	6,476.20
	Total assets	$	6,010.30		$	895.6	$	3,753.70	$	550.8		$	11,210.40
		Year Ended December 31, 2012
		(in millions)
		Mexican			Mexican		Peruvian		Corporate			Total
		Open-pit			IMMSA		Operations		and other			Consolidated
					Unit				eliminations
	Net sales outside of segments	$	3,339.00		$	378	$	2,952.30	$	—		$	6,669.30
	Intersegment sales				135				(135.0		)	—
	Cost of sales (exclusive of depreciation, amortization and depletion)	1,228.20			292.4		1,380.50		(131.9		)	2,769.20
	Selling, general and administrative	34.4			14.6		48.5		3.8			101.3
	Depreciation, amortization and depletion	145.6			25.2		160.3		(5.3		)	325.8
	Legal fees related to the SCC shareholder derivative lawsuit								316.2			316.2
	Exploration	5.2			28.2		14.5		—			47.9
	Operating income	$	1,925.60		$	152.6	$	1,348.50	$	(317.8	)	3,108.90
	Less:
	Interest, net											(157.2		)
	Other income (expense)											21.8
	Income taxes											(1,080.9		)
	Equity earnings of affiliate											48.7
	Non-controlling interest											(6.7		)
	Income attributable to SCC											$	1,934.60
	Capital expenditures	$	804.4		$	56	$	257.8	$	(66.3	)	$	1,051.90
	Property, net	$	2,444.90		$	350.9	$	2,231.40	$	129.5		$	5,156.70
	Total assets	$	4,241.40		$	873.1	$	3,353.00	$	1,916.20		$	10,383.70
		Year Ended December 31, 2011
		(in millions)
		Mexican			Mexican		Peruvian		Corporate			Total
		Open-pit			IMMSA		Operations		and other			Consolidated
					Unit				eliminations
	Net sales outside of segments	$	3,212.10		$	420.1	$	3,186.50	$	—		$	6,818.70
	Intersegment sales	—			126.1		—		(126.1		)	—
	Cost of sales (exclusive of depreciation, amortization and depletion)	1,115.80			309.3		1,441.00		(102.9		)	2,763.20
	Selling, general and administrative	34.1			14.7		50.8		4.9			104.5
	Depreciation, amortization and depletion	133.6			24.5		140.6		(10.6		)	288.1
	Exploration	3.5			22		12		—			37.5
	Operating income	$	1,925.10		$	175.7	$	1,542.10	$	(17.5	)	3,625.40
	Less:
	Interest, net											(172.8		)
	Other income (expense)											(4.0		)
	Income taxes											(1,104.3		)
	Non-controlling interest											(7.9		)
	Income attributable to SCC											$	2,336.40
Capital expenditures	$	357.6		$	48.7	$	205.5	$	1.1		$	612.9
Property, net	$	1,827.20		$	320.1	$	2,225.90	$	56.7		$	4,429.90
Total assets	$	3,471.60		$	743.4	$	3,164.00	$	683.7		$	8,062.70
Schedule of sales value per segment	'
		Year Ended December 31, 2013
	(in millions)	Mexican			Mexican		Peruvian		Corporate, Other			Total
		Open-pit			IMMSA Unit		Operations		& Eliminations			Consolidated
	Copper	$	2,365.50		$	48.4	$	2,289.30	$	(48.4	)	$	4,654.80
	Molybdenum	242.2			—		147.9		—			390.1
	Silver	242.7			110.1		79.7		(38.8		)	393.7
	Zinc	—			200.3		—		—			200.3
	Other	126.3			99.7		97.7		(9.7		)	314
	Total	$	2,976.70		$	458.5	$	2,614.60	$	(96.9	)	$	5,952.90
		Year Ended December 31, 2012
	(in millions)	Mexican			Mexican		Peruvian		Corporate, Other			Total
		Open-pit			IMMSA Unit		Operations		& Eliminations			Consolidated
	Copper	$	2,604.90		$	62.3	$	2,532.00	$	(62.3	)	$	5,136.90
	Molybdenum	271.3			—		179.2		—			450.5
	Silver	280.5			161.5		113.6		(60.3		)	495.3
	Zinc	—			195.9		—		—			195.9
	Other	182.3			93.3		127.5		(12.4		)	390.7
	Total	$	3,339.00		$	513	$	2,952.30	$	(135.0	)	$	6,669.30
		Year Ended December 31, 2011
	(in millions)	Mexican			Mexican		Peruvian		Corporate, Other			Total
		Open-pit			IMMSA Unit		Operations		& Eliminations			Consolidated
	Copper	$	2,509.60		$	57.2	$	2,720.00	$	(57.2	)	$	5,229.60
	Molybdenum	310.8			—		233.3		—			544.1
	Silver	248.1			184.2		121.2		(61.1		)	492.4
	Zinc	—			209.8		—		—			209.8
	Other	143.6			95		112		(7.8		)	342.8
	Total	$	3,212.10		$	546.2	$	3,186.50	$	(126.1	)	$	6,818.70
Schedule of net sales by countries	'
		Years Ended December 31,
	(in millions)	2013			2012		2011
	United States	$	1,031.20		$	1,567.40	$	2,103.70
	Europe	1,057.50			1,365.10		1,292.10
	Mexico	1,403.30			1,676.40		1,269.30
	Peru	324.8			296.2		261.7
	Brazil	471			449		598.5
	Chile	366.1			443.5		515.8
	Latin America, other	391.8			108.3		101.2
	Asia	907.2			763.4		662.9
	Derivative instruments	—			—		13.5
	Total	$	5,952.90		$	6,669.30	$	6,818.70
Schedule of provisionally priced copper and molybdenum sales outstanding	'
	Following are the provisionally priced copper and molybdenum sales outstanding at December 31, 2013:
	Copper	Priced at		Month of settlement
	(million lbs.)	(per pound)
	16.1	3.344		January through February 2014
	Molybdenum	Priced at		Month of settlement
	(million lbs.)	(per pound)
	10.3	9.7		January 2014 through April 2014
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):
		As of December 31,
		2013			2012
	Copper	$	1		$	2.9
	Molybdenum	0.6			3.7
	Total	$	1.6		$	6.6

QUARTERLY_DATA_unaudited_Table

QUARTERLY DATA (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
QUARTERLY DATA (unaudited)	'
Schedule of quarterly financial data	'
	(in millions, except per share data)
		2013
		1st		2nd		3rd		4th		Year
	Net sales	$	1,623.00	$	1,410.20	$	1,384.50	$	1,535.20	$	5,952.90
	Gross profit	$	805.7	$	604.4	$	617	$	658.5	$	2,685.60
	Operating income	$	770	$	565.3	$	580.9	$	615.9	$	2,532.10
	Net income	$	497	$	374.1	$	345.6	$	407.5	$	1,624.20
	Net income attributable to SCC	$	495.4	$	372.7	$	344.2	$	406.2	$	1,618.50
	Per share amounts attributable to SCC:
	Net earnings basic and diluted	$	0.59	$	0.44	$	0.41	$	0.48	$	1.92
	Dividend per share	$	0.24	$	0.2	$	0.12	$	0.12	$	0.68
				2012
		1st		2nd		3rd (1)		4th		Year
	Net sales	$	1,805.90	$	1,659.90	$	1,552.40	$	1,651.10	$	6,669.30
	Gross profit	$	1,007.10	$	913.6	$	800.2	$	853.4	$	3,574.30
	Operating income	$	972.9	$	875.6	$	447.8	$	812.6	$	3,108.90
	Net income	$	623.6	$	565.3	$	219.3	$	533.2	$	1,941.40
	Net income attributable to SCC	$	621.4	$	563.5	$	217.9	$	531.8	$	1,934.60
	Per share amounts attributable to SCC:
	Net earnings basic and diluted	$	0.73	$	0.66	$	0.26	$	0.63	$	2.28
	Dividend per share (2)	$	0.54	$	0.53	$	0.24	$	2.75	$	4.06
	(1) The third quarter 2012 includes in operating income and expenses a discrete charge of $316.2 million for legal fees related to a shareholder derivative lawsuit.
	(2) Dividend paid in the first quarter of 2012 includes a cash dividend of $0.19 and a stock dividend of $0.35.
	Dividend paid in the fourth quarter of 2012 includes a one-time dividend related to the settlement of a shareholder derivative lawsuit. Please see Note 14. Stockholders’ Equity.

DESCRIPTION_OF_THE_BUSINESS_De

DESCRIPTION OF THE BUSINESS: (Details)	Dec. 31, 2013	Dec. 31, 2012
DESCRIPTION OF THE BUSINESS:	'	'
Percentage of ownership interest held by the parent company	82.30%	81.30%

SUMMARY_OF_SIGNIFICANT_ACCOUNT2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	segment
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:	'	'	'
Average estimated recovery period of long-term leach stockpiles	'5 years	'	'
Increase in total reserves at a property to qualify as a major expansion (as a percent)	10.00%	'	'
Period considered for calculation of average metal price	'3 years	'	'
Current price of copper (in dollars per pound)	3.65	3.68	3.26
Average price of copper (in dollars per pound)	3	'	'
Average price of molybdenum (in dollars per pound)	10	'	'
Impairment in the carrying value of long-term assets	$0	'	'
Number of years of average prices for copper and molybdenum used for impairment analysis	'3 years	'	'
Number of reportable segments	3	'	'
Financial information related to segments	'	'	'
Total property, net	6,476,168,000	5,156,731,000	4,429,900,000
Maximum	'	'	'
Financial information related to segments	'	'	'
Maximum period after shipping within which pricing is based by customer contracts in most cases	'3 months	'	'
Estimated useful lives of buildings and equipment	'40 years	'	'
Minimum	'	'	'
Financial information related to segments	'	'	'
Estimated useful lives of buildings and equipment	'5 years	'	'
Mine development	'	'	'
Financial information related to segments	'	'	'
Total property, net	36,200,000	37,900,000	'
Mexican IMMSA Unit	'	'	'
Financial information related to segments	'	'	'
Number of underground poly metal mines	5	'	'
Total property, net	378,200,000	350,900,000	320,100,000
Peruvian Operations	'	'	'
Financial information related to segments	'	'	'
Number of open-pit copper mines	2	'	'
Total property, net	$2,451,400,000	$2,231,400,000	$2,225,900,000

SHORTTERM_INVESTMENTS_Details

SHORT-TERM INVESTMENTS: (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Investments	'	'
Trading securities	$202,600,000	$127,800,000
Weighted average interest rate (as a percent)	3.78%	1.87%
Available-for-sale	5,700,000	6,500,000
Weighted average interest rate (as a percent)	0.42%	0.43%
Total short-term investments	208,268,000	134,298,000
Trading securities:	'	'
Interest earned	5,200,000	3,100,000
Unrealized gain (loss)	-1,900,000	2,400,000
Available-for-sale	'	'
Interest earned	'	100,000
Investment redeemed	800,000	1,900,000
Contractual maturities of the Company's available for sale debt securities	'	'
One year or less	400,000	400,000
Maturing after five years through ten years	200,000	'
Due after 10 years	5,100,000	6,100,000
Total debt securities	5,700,000	6,500,000
Maximum	'	'
Available-for-sale	'	'
Interest earned	$100,000	'

INVENTORIES_Details

INVENTORIES: (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Metals at lower of average cost or market:	'	'	'
Finished goods	$84,200,000	$101,100,000	'
Work-in-process	305,400,000	310,800,000	'
Supplies at average cost	304,300,000	284,200,000	'
Total current inventory	693,942,000	696,140,000	'
Inventory, long-term:	'	'	'
Long-term leach stockpiles	395,177,000	249,404,000	'
Leaching costs capitalized as long-term inventory of leachable material	306,800,000	225,500,000	'
Long-term leaching inventories recognized as cost of sales	$109,300,000	$68,500,000	$49,200,000

PROPERTY_Details

PROPERTY: (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property	'	'	'
Total property	$10,986,700,000	$9,412,300,000	'
Accumulated depreciation, amortization and depletion	-4,510,500,000	-4,255,600,000	'
Total property, net	6,476,168,000	5,156,731,000	4,429,900,000
Depreciation and depletion expense	393,600,000	323,600,000	286,000,000
Buildings and equipment	'	'	'
Property	'	'	'
Total property	8,107,200,000	7,497,300,000	'
Construction in progress	'	'	'
Property	'	'	'
Total property	2,567,000,000	1,617,600,000	'
Mine development	'	'	'
Property	'	'	'
Total property	250,700,000	250,700,000	'
Total property, net	36,200,000	37,900,000	'
Land, other than mineral	'	'	'
Property	'	'	'
Total property	$61,800,000	$46,700,000	'

INTANGIBLE_ASSETS_Details

INTANGIBLE ASSETS: (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Intangible assets	'	'	'
Intangible assets excluding goodwill, gross	$139,400,000	$136,100,000	'
Accumulated amortization	-46,200,000	-43,800,000	'
Goodwill	17,000,000	17,000,000	'
Intangible assets, net	110,219,000	109,300,000	'
Amortization expense:	'	'	'
Amortization expense	2,400,000	2,200,000	2,100,000
Estimated amortization expense:	'	'	'
2014-2018	9,100,000	'	'
Average annual	1,800,000	'	'
Mining concessions	'	'	'
Intangible assets	'	'	'
Intangible assets excluding goodwill, gross	121,200,000	121,200,000	'
Mine engineering and development studies	'	'	'
Intangible assets	'	'	'
Intangible assets excluding goodwill, gross	6,000,000	6,000,000	'
Software	'	'	'
Intangible assets	'	'	'
Intangible assets excluding goodwill, gross	$12,200,000	$8,900,000	'

INCOME_TAXES_Details

INCOME TAXES: (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
U.S. federal and state:	'	'	'
Current	'	($100,000)	($2,400,000)
Deferred	-139,300,000	-108,600,000	-45,300,000
Uncertain tax positions	'	147,400,000	-400,000
Provision for income taxes	-139,300,000	38,700,000	-48,100,000
Foreign (Peru and Mexico):	'	'	'
Current	866,300,000	1,025,100,000	1,238,700,000
Deferred	42,300,000	17,100,000	-86,300,000
Provision for income taxes	908,600,000	1,042,200,000	1,152,400,000
Total provision for income taxes	769,322,000	1,080,872,000	1,104,335,000
Earnings by location:	'	'	'
U.S.	100,000	-100,000	-1,100,000
Peru	773,800,000	846,000,000	1,351,900,000
Mexico	1,598,700,000	2,127,600,000	2,097,900,000
Foreign	2,372,500,000	2,973,600,000	3,449,800,000
Income before income taxes	$2,372,598,000	$2,973,542,000	$3,448,688,000

INCOME_TAXES_Details_2

INCOME TAXES: (Details 2)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	item
Reconciliation of the statutory income tax rate to the effective tax rate	'	'	'
Expected tax (as a percent)	30.00%	30.00%	30.00%
Effect of income taxed at a rate other than the statutory rate (as a percent)	1.70%	1.60%	4.30%
Percentage depletion	-5.00%	-4.20%	-4.00%
Other permanent differences (as a percent)	3.50%	3.70%	1.20%
Peru tax on net income deemed distributed (as a percent)	1.20%	1.30%	1.30%
Special mining tax	2.00%	1.60%	0.50%
Increase (decrease) in unrecognized tax benefits for uncertain tax positions (as a percent)	'	5.00%	'
Repatriated foreign earnings (as a percent)	-1.40%	-1.70%	2.10%
Amounts (over) / under provided in prior years (as a percent)	0.40%	-0.60%	-3.50%
Other (as a percent)	'	-0.40%	0.10%
Effective income tax rate (as a percent)	32.40%	36.30%	32.00%
Number of jurisdictions where company files income tax returns	3	'	'
U.S. statutory rate (as a percent)	35.00%	35.00%	35.00%
Duration for which statutory tax rates for Peru and Mexico are considered to determine effective tax rate	'3 years	'	'

INCOME_TAXES_Details_3

INCOME TAXES: (Details 3) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2009
In Millions, unless otherwise specified			AMC
			Minimum
Assets:	'	'	'
Inventories	$18.70	$23.60	'
Capitalized exploration expenses	29.4	24.4	'
U.S. foreign tax credit carryforward	280	202.3	'
U.S tax effect of Peruvian deferred tax liability	68	33.4	'
Reserves	35	77.5	'
Mexican tax loss carryforward	'	26.9	'
Labor share buyback	'	30	'
Other	27.9	32.6	'
Total deferred tax assets	459	450.7	'
Liabilities:	'	'	'
Property, plant and equipment	-105.8	-125	'
Deferred charges	-79.6	-81.6	'
Mexican tax on consolidated dividends	-31.5	-34.6	'
Outside basis difference	-7.4	-41.3	'
Other	-0.1	-0.5	'
Total deferred tax liabilities	-224.4	-283	'
Total net deferred tax assets / (liabilities)	234.6	167.7	'
Amount of capital loss carryover which was utilized	'	0.9	'
Amount of capital loss carryover which was expired	'	1.3	'
Other U.S. tax credits	$0	'	'
Related party transactions	'	'	'
Percentage of ownership interest held by the parent company	82.30%	81.30%	80.00%

INCOME_TAXES_Details_4

INCOME TAXES: (Details 4) (Foreign, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Foreign tax credits	'
Tax credits carryback period	'1 year
Tax credits carryforward period	'10 years
Foreign tax credit carryforward	$280
2016	'
Foreign tax credits	'
Foreign tax credit carryforward	19
2018	'
Foreign tax credits	'
Foreign tax credit carryforward	70.5
2020	'
Foreign tax credits	'
Foreign tax credit carryforward	27.9
2021	'
Foreign tax credits	'
Foreign tax credit carryforward	11.7
2022	'
Foreign tax credits	'
Foreign tax credit carryforward	84.1
2023	'
Foreign tax credits	'
Foreign tax credit carryforward	$66.80

INCOME_TAXES_Details_5

INCOME TAXES: (Details 5) (USD $)

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Jan. 02, 2014

Dec. 31, 2013

Jan. 02, 2014

Jan. 02, 2014

Peru

Peru

Peru

Peru

Peru

United States

Mexican Operations

Mexican Operations

Mexican Operations

Mexican Operations

Minimum

Maximum

Minera Mexico

Minimum

Maximum

Income Taxes

'

'

'

'

'

'

'

'

'

'

'

'

'

Excess of financial reporting over tax basis for stock in subsidiary

'

'

'

'

'

'

'

'

$4,400,000,000

'

'

'

'

Deferred tax liability potentially remitted foreign earnings

'

'

'

'

'

'

'

'

7,400,000

'

'

'

'

Foreign earnings potentially repatriated

'

'

'

'

'

'

'

'

76,200,000

'

'

'

'

Special mine tax (as a percent)

'

'

'

'

'

'

2.00%

8.40%

'

'

'

'

'

Operating income margin (as a percent)

'

'

'

'

'

'

'

10.00%

'

'

'

'

'

Increment in operating income margin (as a percent)

'

'

'

'

'

'

5.00%

85.00%

'

'

'

'

'

Increase in special mining tax rate for each 5% increase up to 85% increase in operating income margin (as a percent)

'

'

'

0.40%

'

'

'

'

'

'

'

'

'

Provision for special mining tax

'

'

'

25,500,000

49,600,000

16,400,000

'

'

'

'

'

'

'

Mining royalty tax (as a percent)

'

'

'

'

'

'

'

'

'

7.50%

'

'

'

Additional royalty tax over gross income from sales of gold, silver and platinum (as a percent)

'

'

'

'

'

'

'

'

'

0.50%

'

'

'

Depreciation of exploration expenses per year (as a percent)

'

'

'

'

'

'

'

'

'

10.00%

100.00%

'

'

Withholding on dividends distributed to individuals or foreign residents (as a percent)

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

Deductions for tax-exempt salaries and for contributions to pension plans (as a percent)

'

'

'

'

'

'

'

'

'

'

'

47.00%

53.00%

Mexican statutory tax rate (as a percent)

'

'

'

'

'

'

'

'

'

30.00%

'

'

'

Recognised deferred income tax charge

-97,188,000

55,807,000

-117,946,000

'

'

'

'

'

'

'

34,700,000

'

'

Unrecognized tax benefits

221,200,000

221,200,000

70,600,000

0

'

'

'

'

'

'

0

'

'

Changes in unrecognized tax benefits

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrecognized tax benefits, opening balance

221,200,000

70,600,000

75,700,000

'

'

'

'

'

'

0

'

'

'

Gross increases tax positions in prior period

'

39,700,000

21,600,000

'

'

'

'

'

'

'

'

'

'

Gross decreases tax positions in prior period

'

200,000

-26,800,000

'

'

'

'

'

'

'

'

'

'

Gross increases current-period tax positions

'

110,700,000

100,000

'

'

'

'

'

'

'

'

'

'

Net increase / decrease

'

150,600,000

-5,100,000

'

'

'

'

'

'

'

'

'

'

Unrecognized tax benefits, ending balance

221,200,000

221,200,000

70,600,000

0

'

'

'

'

'

'

0

'

'

Amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate

221,200,000

221,200,000

'

'

'

'

'

'

'

'

'

'

'

Accrued interest and penalties included in liability for uncertain tax positions

'

$0

$0

'

'

'

'

'

'

'

'

'

'

WORKERS_PARTICIPATION_Details

WORKERS' PARTICIPATION: (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statutory workers' participation	'	'	'
Current	$201.60	$263.10	$274.70
Deferred	31.4	14.3	-18
Workers' participation expense (in USD)	233	277.4	256.7
Peru	'	'	'
Statutory workers' participation	'	'	'
Provision for workers' participation as a percentage of pre-tax earnings	8.00%	'	'
Number of months for which an individual worker's salary is capped for consideration of annual individual worker participation	'18 months	'	'
Maximum taxable units contributed by employer to benefit fund (in Peruvian taxable units)	2,200	'	'
Maximum employer contribution to benefit fund (in USD)	2.9	'	'
Mexican Operations	'	'	'
Statutory workers' participation	'	'	'
Provision for workers' participation as a percentage of pre-tax earnings	10.00%	'	'
Deferred workers participation provision	$16.30	'	'

ASSET_RETIREMENT_OBLIGATION_De

ASSET RETIREMENT OBLIGATION: (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
	item
	Year
ASSET RETIREMENT OBLIGATION:	'	'
Period after which successive reviews are required by the law (in years)	5	'
Accepted value of the Lima office building	$27.80	'
Cumulative guarantee amount	14.2	'
Number of units with future closure costs recognized as an asset retirement obligation	3	'
Increase to net property due to closure of mine	'	20.3
Asset retirement obligation activity	'	'
Balance at the beginning of the period	118.2	62
Changes in estimates	'	27.4
Additions	'	25.1
Closure payments	-1.5	-0.3
Accretion expense	8.1	4
Balance at the end of the period	$124.80	$118.20

FINANCING_Details

FINANCING: (Details) (USD $)	12 Months Ended			89 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Nov. 30, 2012
				item
FINANCING	'	'	'	'
Total debt	$4,204,900,000	$4,213,900,000	'	'
Less, current portion	'	-10,000,000	'	'
Total long-term debt	4,204,915,000	4,203,863,000	'	'
Face amount of debt	'	'	'	4,200,000,000
Number of times for which senior unsecured notes were issued	'	'	'	6
Debt issuance cost capitalized	26,100,000	25,900,000	'	'
Amortization charged to interest expense	1,900,000	1,300,000	500,000	'
Percentage of principal amount at which notes may be required to be repurchased in event of change of control in the entity	101.00%	'	'	'
Minimum	'	'	'	'
FINANCING	'	'	'	'
Number of rating agencies that could cause a change of control triggering event	1	'	'	'
Number of decreased gradations that could cause a change of control triggering event	1	'	'	'
1.763% Mitsui credit agreement due 2013	'	'	'	'
FINANCING	'	'	'	'
Total debt	'	10,000,000	'	'
Face amount of debt	'	100,000,000	'	'
Interest rate (as a percent)	1.76%	'	'	'
Volume of copper on pledged receivables (in tons)	31,000	'	'	'
6.375% Senior unsecured notes due 2015	'	'	'	'
FINANCING	'	'	'	'
Total debt	199,700,000	199,600,000	'	'
Face amount of debt	200,000,000	'	'	'
Interest rate (as a percent)	6.38%	'	'	'
5.375% Senior unsecured notes due 2020	'	'	'	'
FINANCING	'	'	'	'
Total debt	398,600,000	398,400,000	'	'
Face amount of debt	400,000,000	'	'	'
Interest rate (as a percent)	5.38%	'	'	'
3.500% Senior unsecured notes due 2022	'	'	'	'
FINANCING	'	'	'	'
Total debt	299,100,000	299,000,000	'	'
Face amount of debt	300,000,000	'	'	'
Interest rate (as a percent)	3.50%	'	'	'
6.750% Senior unsecured notes due 2040	'	'	'	'
FINANCING	'	'	'	'
Total debt	1,092,100,000	1,092,000,000	'	'
Face amount of debt	1,100,000,000	'	'	'
Interest rate (as a percent)	6.75%	'	'	'
5.250% Senior unsecured notes due 2042	'	'	'	'
FINANCING	'	'	'	'
Total debt	1,178,800,000	1,178,500,000	'	'
Face amount of debt	1,200,000,000	'	'	'
Interest rate (as a percent)	5.25%	'	'	'
9.250% Yankee Bonds due 2028	'	'	'	'
FINANCING	'	'	'	'
Total debt	51,100,000	51,100,000	'	'
Face amount of debt	125,000,000	'	'	'
Interest rate (as a percent)	9.25%	'	'	'
9.250% Yankee Bonds due 2028 | Minera Mexico | Minimum	'	'	'	'
FINANCING	'	'	'	'
Ratio of EBITDA to interest expense	2.5	'	'	'
7.500% Senior unsecured notes due 2035	'	'	'	'
FINANCING	'	'	'	'
Total debt	985,500,000	985,300,000	'	'
Face amount of debt	1,000,000,000	'	'	'
Interest rate (as a percent)	7.50%	'	'	'
Debt issuance cost capitalized	$28,900,000	'	'	'

FINANCING_Details_2

FINANCING: (Details 2) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Aggregate maturities of the outstanding borrowings	'	'
2014	$0	'
2015	200	'
2016	0	'
2017	0	'
Thereafter	4,051.20	'
Total	4,251.20	'
Debt discount	46.3	'
Amounts held in escrow accounts	'	$5.10

BENEFIT_PLANS_Details

BENEFIT PLANS: (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
BENEFIT PLANS:	'	'	'
Number of expatriate noncontributory defined benefit pension plans	2	'	'
Post retirement defined benefit plan	'	'	'
Defined benefit plan, net periodic benefit cost	'	'	'
Service cost	$1.10	$1	$0.90
Interest cost	1	1.1	1.2
Expected return on plan assets	-3.4	-3.6	-3.5
Amortization of transition assets, net	'	'	-0.1
Amortization of net actuarial loss	-0.7	-0.8	-1.3
Amortization of net loss/(gain)	0.2	0.1	0.1
Net periodic benefit cost	-1.8	-2.2	-2.7
Change in benefit obligation:	'	'	'
Projected benefit obligation at beginning of year	27.9	25.2	'
Service cost	1.1	1	0.9
Interest cost	1	1.1	1.2
Actuarial gain census	-0.3	-0.1	'
Benefits paid	-2.2	-2	'
Actuarial (gain)/loss	0.3	1	'
Actuarial gain assumption changes	-1	0.8	'
Inflation adjustment	'	0.9	'
Projected benefit obligation at end of year	26.8	27.9	25.2
Change in plan assets:	'	'	'
Fair value of plan assets at beginning of year	61.9	55.8	'
Actual return on plan assets	-0.2	4.9	'
Employer contributions	0.1	-0.6	'
Benefits paid	-0.9	-1.1	'
Currency exchange rate adjustment	-0.3	2.9	'
Fair value of plan assets at end of year	60.6	61.9	55.8
Funded status at end of year	33.8	34	'
Amounts recognized in statement of financial position	'	'	'
Non-current assets	33.8	34	'
Total	33.8	34	'
Amounts recognized in accumulated other comprehensive income	'	'	'
Net loss (gain)	-1.7	-3.7	'
Prior service cost (credit)	0.1	0.1	'
Total, net of tax	-1.6	-3.6	-3.8
Net loss (gain), income taxes	1.5	2.9	'
Reconciliation of accumulated other comprehensive income:	'	'	'
Accumulated other comprehensive income at beginning of plan year	-3.6	-3.8	'
Net loss/(gain) amortized during the year	0.4	0.5	'
Net loss/(gain) occurring during the year	1.5	0.3	'
Currency exchange rate adjustment	0.1	-0.6	'
Net adjustment to accumulated other comprehensive income	2	0.2	'
Accumulated other comprehensive income at end of plan year	-1.6	-3.6	-3.8
Net adjustment to accumulated other comprehensive income, income taxes	-1.3	-0.5	'
Amounts in accumulative other comprehensive income amortized and recognized as a component of net periodic benefit cost, net of income tax	'	'	'
Net loss / (gain)	1.5	0.3	'
Amortization of net (loss) gain	0.4	0.5	'
Total amortization expenses	1.9	0.8	'
Expected Benefit Payments	'	'	'
2014	1.7	'	'
2015	1.3	'	'
2016	1.3	'	'
2017	1.3	'	'
2018	1.3	'	'
2019 to 2023	7.4	'	'
Total	14.3	'	'
Post retirement defined benefit plan | Expatriate Health Plan	'	'	'
Assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost in the ensuing year	'	'	'
Discount rate (as a percent)	4.25%	3.35%	3.95%
Expected long-term rate of return on plan asset (as a percent)	4.50%	4.50%	4.50%
Post retirement defined benefit plan | Mexican Health Plan	'	'	'
Assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost in the ensuing year	'	'	'
Discount rate (as a percent)	7.10%	6.50%	7.50%
Expected long-term rate of return on plan asset (as a percent)	7.10%	6.50%	7.50%
Rate of increase in future compensation level (as a percent)	4.00%	4.00%	4.50%
Post-retirement Health Care Plan	'	'	'
Defined benefit plan, net periodic benefit cost	'	'	'
Interest cost	1.7	1.5	3.3
Amortization of transition obligation	'	'	1.3
Amortization of prior services cost/ (credit)	'	-0.3	-10
Net periodic benefit cost	1.7	1.2	-5.4
Change in benefit obligation:	'	'	'
Projected benefit obligation at beginning of year	27.2	20.3	'
Interest cost	1.7	1.5	3.3
Actuarial loss/ (gain) - claims cost	'	-0.2	'
Benefits paid	-0.1	-1.5	'
Actuarial (gain)/loss	-6.8	5.6	'
Actuarial gain assumption changes	-0.2	0.1	'
Inflation adjustment	-0.1	1.4	'
Projected benefit obligation at end of year	21.7	27.2	20.3
Change in plan assets:	'	'	'
Employer contributions	0.1	0.1	'
Benefits paid	-0.1	-0.1	'
Funded status at end of year	-21.7	-27.2	'
Amounts recognized in statement of financial position	'	'	'
Current liabilities	-0.1	-0.1	'
Non-current liabilities	-21.6	-27.1	'
Total	-21.7	-27.2	'
Amounts recognized in accumulated other comprehensive income	'	'	'
Net loss (gain)	-4.3	-0.1	'
Prior service cost (credit)	-0.1	-0.1	'
Total, net of tax	-4.4	-0.3	-3.4
Net loss (gain), income taxes	3	0.2	'
Reconciliation of accumulated other comprehensive income:	'	'	'
Accumulated other comprehensive income at beginning of plan year	-0.3	-3.4	'
Net loss/(gain) occurring during the year	-4.1	3.2	'
Amortization of transition obligation	'	0.2	'
Currency exchange rate adjustment	'	-0.3	'
Net adjustment to accumulated other comprehensive income	-4.1	3.1	'
Accumulated other comprehensive income at end of plan year	-4.4	-0.3	-3.4
Net adjustment to accumulated other comprehensive income, income taxes	2.8	-2.4	'
Amounts in accumulative other comprehensive income amortized and recognized as a component of net periodic benefit cost, net of income tax	'	'	'
Net loss / (gain)	-4.1	3.2	'
Amortization of transition obligation	'	0.2	'
Total amortization expenses	-4.1	3.4	'
Expected Benefit Payments	'	'	'
2014	1.4	'	'
2015	1.5	'	'
2016	1.6	'	'
2017	1.7	'	'
2018	1.8	'	'
2019 to 2023	10.5	'	'
Total	18.5	'	'
Post-retirement Health Care Plan | Expatriate Health Plan	'	'	'
Assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost in the ensuing year	'	'	'
Discount rate (as a percent)	4.25%	3.35%	3.95%
Expected Benefit Payments	'	'	'
Assumed trend rate for covered health care benefit cost (as a percent)	6.00%	'	'
Assumed ultimate trend rate for health care benefit cost (as a percent)	4.60%	'	'
Post-retirement Health Care Plan | Mexican Health Plan	'	'	'
Expected Benefit Payments	'	'	'
Assumed trend rate for covered health care benefit cost (as a percent)	4.00%	'	'
Effect of one percentage-point change in assumed other benefit cost trend rates	'	'	'
Effect of one percentage-point increase on total service and interest cost components	1.4	'	'
Effect of one percentage-point decrease on total service and interest cost components	1.3	'	'
Effect of one percentage-point increase on post-retirement benefit obligation	18.1	'	'
Effect of one percentage-point decrease on post-retirement benefit obligation	$22.40	'	'
Post-retirement Health Care Plan | Weighted average | Mexican Health Plan	'	'	'
Assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost in the ensuing year	'	'	'
Discount rate (as a percent)	7.10%	6.50%	7.50%

BENEFIT_PLANS_Details_2

BENEFIT PLANS: (Details 2) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Post retirement defined benefit plan | Expatriate Plan	'	'	'
Benefit plans	'	'	'
Net asset value (in dollars per share)	$1	'	'
Target duration of funds invested in publicly traded, investment grade securities	'1 year 6 months	'	'
Maturity period of 4.0% coupon on which Bond Fund has an overweight position	'30 years	'	'
Interest rate of coupon on which Bond Fund is overweight (as a percent)	4.00%	'	'
Assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost in the ensuing year	'	'	'
Discount rate (as a percent)	4.25%	3.35%	3.95%
Expected long-term rate of return on plan asset (as a percent)	4.50%	4.50%	4.50%
Post retirement defined benefit plan | Mexican Health Plan	'	'	'
Assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost in the ensuing year	'	'	'
Discount rate (as a percent)	7.10%	6.50%	7.50%
Expected long-term rate of return on plan asset (as a percent)	7.10%	6.50%	7.50%
Number of financial institutions managing plan assets	3	'	'
Plan obligations as a percentage of benefit obligation	30.00%	'	'
Asset allocation (as a percent)	100.00%	100.00%	'
Expected employer contribution in next fiscal year	$2.40	'	'
Post retirement defined benefit plan | Minimum | Expatriate Plan	'	'	'
Benefit plans	'	'	'
Period of breakevens for Treasuries/Agencies, BlackRock is overweight	'5 years	'	'
Post retirement defined benefit plan | Minimum | Fannie | Expatriate Plan	'	'	'
Benefit plans	'	'	'
Period of Bond Fund for which the BlackRock has a small overweight to agency mortgages	'5 years	'	'
Post retirement defined benefit plan | Maximum | Expatriate Plan	'	'	'
Benefit plans	'	'	'
Period of breakevens for Treasuries/Agencies, BlackRock is overweight	'10 years	'	'
Post retirement defined benefit plan | Maximum | Fannie | Expatriate Plan	'	'	'
Benefit plans	'	'	'
Period of Bond Fund for which the BlackRock has a small overweight to agency mortgages	'10 years	'	'
Post retirement defined benefit plan | Parent Company (Grupo Mexico) common shares | Mexican Health Plan	'	'	'
Assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost in the ensuing year	'	'	'
Asset allocation (as a percent)	74.00%	'	'
Post retirement defined benefit plan | Equity securities | Mexican Health Plan	'	'	'
Assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost in the ensuing year	'	'	'
Asset allocation (as a percent)	74.00%	73.00%	'
Post retirement defined benefit plan | Treasury bills | Mexican Health Plan	'	'	'
Assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost in the ensuing year	'	'	'
Asset allocation (as a percent)	26.00%	27.00%	'
Post-retirement Health Care Plan | Expatriate Plan	'	'	'
Assumptions used to determine the pension obligation and seniority premiums as of year-end and the net cost in the ensuing year	'	'	'
Discount rate (as a percent)	4.25%	3.35%	3.95%

NONCONTROLLING_INTEREST_Detail

NON-CONTROLLING INTEREST: (Details)	Dec. 31, 2013
NON-CONTROLLING INTEREST:	'
Investment shareholders' interest in Peruvian Branch (as a percent)	0.71%

COMMITMENTS_AND_CONTINGENCIES_1

COMMITMENTS AND CONTINGENCIES: (Details) (USD $)	12 Months Ended			46 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013
			category
			person
Environmental costs	'	'	'	'
Environmental capital expenditure	$60.70	$27.40	$14	'
Peruvian operations	'	'	'	'
Environmental costs	'	'	'	'
Environmental capital expenditure	20.9	6.7	2.5	'
Period required for ambient air monitoring as per environmental regulation	'12 months	'	'	'
Air quality standards level for sulfur dioxide to be maintained when emission is excess than specified as per new environmental regulation (in micrograms per cubic meter)	80	'	'	'
Number of atmospheric basins established that require further attention	3	'	'	'
Period for the soil decontamination plan, as a result of any contamination being identified	'3 years	'	'	'
Number of months after the issuance of the regulations to update approved environmental programs to comply with the requirements of the rule	'12 months	'	'	'
Peruvian operations | Maximum	'	'	'	'
Environmental costs	'	'	'	'
Revised air quality standards for sulfur dioxide as per new environmental regulation (in micrograms per cubic meter)	20	'	'	'
Mexican operations	'	'	'	'
Environmental costs	'	'	'	'
Environmental capital expenditure	39.8	20.7	11.5	'
Number of categories of collective actions	'	'	3	'
Minimum number of people claiming injury due to collective action initiative in Civil Federal Procedures Code (CFPC)	'	'	30	'
Plant demolition and soil remediation budgeted cost	'	'	'	62.4
Plant demolition and soil cost recognized	'	'	'	$35.70

COMMITMENTS_AND_CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES: (Details 2) (USD $)

12 Months Ended

3 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2013

Dec. 31, 2013

Dec. 31, 1992

Dec. 31, 1978

Dec. 31, 1971

Apr. 30, 1996

Dec. 31, 2013

Dec. 31, 2013

Aug. 31, 2009

Tia Maria

Virgen Maria

Garcia Ataucuri litigation

Peruvian operations

Peruvian operations

Peruvian operations

Peruvian operations

Peruvian operations

Peruvian operations

Peruvian operations

Peruvian operations

Peruvian operations

ha

ha

plaintiff

item

Garcia Ataucuri and Others against SCC's Peruvian Branch

Garcia Ataucuri and Others against SCC's Peruvian Branch

Garcia Ataucuri and Others against SCC's Peruvian Branch

Exploraciones de Concesiones Metalicas S.A.C. ("Excomet")

workers

person

solesdeoro

laborshares

Litigation matter

'

'

'

'

'

'

'

'

'

'

'

'

Number of former employees who filed the complaint

'

'

'

'

'

'

'

'

900

'

'

'

Statutory participation of mine workers in pre-tax profit (as a percent)

'

'

'

'

'

8.00%

'

10.00%

'

'

'

'

Statutory participation of mine workers in pre-tax profit paid in cash (as a percent)

'

'

'

'

'

100.00%

4.00%

40.00%

'

'

'

'

Statutory participation of mine workers in pre-tax profit received as equity interest of enterprise (as a percent)

'

'

'

'

'

'

'

60.00%

'

'

'

'

Percentage of pre-tax profits delivered as "labor shares"

'

'

'

'

'

'

5.50%

'

'

'

'

'

Damages sought by the plaintiff

'

'

'

'

'

'

'

'

'

3,876,380,679.65

38,763,806.80

'

Face value of one labor share

'

'

'

'

'

'

'

'

'

100

100

'

Labor shares issued by the Branch

'

'

'

'

'

'

'

'

'

100.00%

100.00%

'

Plaintiffs do not represent the percent of SCC's eligible employees

'

'

'

'

'

'

'

'

'

100.00%

100.00%

'

Soles de oro equivalent to today's one nuevo sol

'

'

'

'

'

'

'

'

'

1,000,000,000

1,000,000,000

'

Number of plaintiffs involved in lawsuits filed

'

'

800

'

'

'

'

'

'

'

'

'

Number of former Branch workers

'

'

216

'

'

'

'

'

'

'

'

'

Number of former Branch workers

'

'

37

'

'

'

'

'

'

'

'

'

Area of mining concession (in hectares)

32,989.64

943.72

'

'

'

'

'

'

'

'

'

'

Percentage of mining concession

'

2.90%

'

'

'

'

'

'

'

'

'

'

Purchase price of shares paid to former stockholders

'

'

'

'

'

'

'

'

'

'

'

$2

Percentage of labor unionized

'

'

'

'

65.30%

'

'

'

'

'

'

'

Total number of workers

'

'

'

'

4,430

'

'

'

'

'

'

'

Number of labor unions

'

'

'

'

7

'

'

'

'

'

'

'

Number of labor unions represent majority of workers

'

'

'

'

3

'

'

'

'

'

'

'

Number of labor unions at each production area represent majority of workers

'

'

'

'

1

'

'

'

'

'

'

'

Number of labor unions other than majority workers unions

'

'

'

'

4

'

'

'

'

'

'

'

Term of collective bargaining agreement

'

'

'

'3 years

'

'

'

'

'

'

'

'

Percentage of annual salary increase as per collective bargaining agreement in year 2013

'

'

'

6.50%

'

'

'

'

'

'

'

'

Percentage of annual salary increase as per collective bargaining agreement in year 2014

'

'

'

5.00%

'

'

'

'

'

'

'

'

Percentage of annual salary increase as per collective bargaining agreement in year 2015

'

'

'

5.00%

'

'

'

'

'

'

'

'

COMMITMENTS_AND_CONTINGENCIES_3

COMMITMENTS AND CONTINGENCIES: (Details 3)	12 Months Ended	3 Months Ended	1 Months Ended				3 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 1997	Dec. 31, 2013	Nov. 30, 2013	Nov. 30, 2013	Feb. 28, 2013	Feb. 28, 2013	Jun. 30, 2013	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2005	Dec. 31, 2013
		Tia Maria	Toquepala Concentrator Expansion	Toquepala Concentrator Expansion	Toquepala Concentrator Expansion	Toquepala Concentrator Expansion	Toquepala Concentrator Expansion	Toquepala Concentrator Expansion	MGE	MGE	MGE
		Peruvian operations	Peruvian operations	Peruvian operations	Peruvian operations	Peruvian operations	Peruvian operations	Peruvian operations		item	Mexican Operations
		USD ($)	USD ($)	PEN	USD ($)	PEN	USD ($)	PEN			item
		item			item
Other commitments:	'	'	'	'	'	'	'	'	'	'	'
Number of work-shops successfully held	'	2	'	'	'	'	'	'	'	'	'
Total spending for the project	'	$534.60	'	'	'	'	'	'	'	'	'
Equipment reassigned to other operations, carrying value	'	189.5	'	'	'	'	'	'	'	'	'
Term of power purchase agreement related to sale of power plant	'20 years	'	'	'	'	'	'	'	'	'	'
Number of provinces for which final agreement reached	'	'	'	'	1	1	'	'	'	'	'
Number of provinces neighboring the Toquepala unit	'	'	'	'	3	3	'	'	'	'	'
Amount committed to funding for development projects in the Candarave province	'	'	'	'	100	255	'	'	'	'	'
Amount paid-out for development projects in the Candarave province	'	'	'	'	'	'	17	45	'	'	'
Amount committed to funding for development projects in the Jorge Basadre province	'	'	$36	100	'	'	'	'	'	'	'
Number of power plants	'	'	'	'	'	'	'	'	'	2	2
Number of power plants completed	'	'	'	'	'	'	'	'	'	'	1
Percentage of supply to third-party energy users	'	'	'	'	'	'	'	'	12.00%	'	'

STOCKHOLDERS_EQUITY_Details

STOCKHOLDERS' EQUITY: (Details) (USD $)

1 Months Ended

3 Months Ended

12 Months Ended

65 Months Ended

0 Months Ended

1 Months Ended

12 Months Ended

Dec. 31, 2013

Nov. 30, 2013

Oct. 31, 2013

Sep. 30, 2013

Aug. 31, 2013

Jul. 31, 2013

Jun. 30, 2013

31-May-13

Apr. 30, 2013

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2009

Dec. 31, 2008

Dec. 31, 2013

Oct. 09, 2012

Oct. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Americas Mining Corporation ("AMC") merger transaction

Americas Mining Corporation ("AMC") merger transaction

Americas Mining Corporation ("AMC") merger transaction

Southern Copper common shares

Southern Copper common shares

Parent Company (Grupo Mexico) common shares

Parent Company (Grupo Mexico) common shares

TREASURY STOCK:

TREASURY STOCK:

TREASURY STOCK:

TREASURY STOCK:

ADDITIONAL PAID-IN CAPITAL:

Southern Copper common shares

Southern Copper common shares

Parent Company (Grupo Mexico) common shares

Parent Company (Grupo Mexico) common shares

Delaware Court Decision Related to SCC Shareholder Derivative Lawsuit:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

SCC shareholder derivative lawsuit payment received

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$2,108,200,000

'

'

'

'

'

'

'

'

'

'

($2,108,221,000)

Legal fees related to SCC shareholders derivative lawsuit

'

'

'

'

'

'

'

'

'

'

'

'

316,233,000

'

'

'

'

'

'

316,200,000

'

'

'

'

'

'

'

'

'

'

Accrual - Legal fees related to SCC shareholders derivative lawsuit

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

316,200,000

'

'

'

'

'

'

'

'

'

Activity in treasury stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance at the beginning of the period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

729,800,000

734,100,000

189,000,000

163,700,000

'

Purchase of shares

49,700,000

64,800,000

42,900,000

5,600,000

17,100,000

35,900,000

39,200,000

26,100,000

100,000

157,400,000

58,600,000

65,400,000

147,300,000

273,700,000

500,000

71,900,000

384,700,000

1,159,500,000

'

'

'

'

'

'

'

281,400,000

147,300,000

'

'

'

Stock dividend distribution

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-151,400,000

'

'

'

Used for corporate purposes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-200,000

-200,000

'

'

'

Other activity, including dividend, interest and currency translation effect

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

16,600,000

25,300,000

'

Balance at the end of the period

$1,216,599,000

'

'

'

'

'

'

'

'

$1,216,599,000

'

'

$918,791,000

'

'

'

'

$1,216,599,000

'

'

'

'

'

'

'

$1,011,000,000

$729,800,000

$205,600,000

$189,000,000

'

Treasury stock balance at the end of the period (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

49,278,536

39,045,536

75,262,919

80,674,702

'

'

'

'

'

STOCKHOLDERS_EQUITY_Details_2

STOCKHOLDERS' EQUITY: (Details 2) (USD $)	0 Months Ended	1 Months Ended										3 Months Ended				12 Months Ended							65 Months Ended
In Millions, except Share data, unless otherwise specified	Jul. 28, 2011	Dec. 31, 2013		Nov. 30, 2013	Oct. 31, 2013	Sep. 30, 2013	Aug. 31, 2013	Jul. 31, 2013	Jun. 30, 2013	31-May-13	Apr. 30, 2013	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008	Dec. 31, 2013
SCC share repurchase program:	'	'		'	'	'	'	'	'	'	'	'		'	'	'		'	'	'	'	'	'
Amount authorized for share repurchase program	$1,000	'		'	'	'	'	'	'	'	'	'		'	'	$2,000		'	'	'	'	$500	'
Total Number of Shares Purchased	'	1,942,398		2,446,490	1,552,100	204,012	641,400	1,300,000	1,350,000	807,100	1,500	5,940,988		2,145,412	2,158,600	'		4,442,336	9,034,400	15,600	4,912,000	28,510,150	57,159,486
Average Price Paid per Share	'	$25.58		$26.49	$27.68	$27.65	$26.68	$27.60	$29.05	$32.33	$32.96	$26.50		$27.33	$30.28	'		$33.17	$30.29	$29.69	$14.64	$13.49	$20.29
Total Number of Shares Purchased as Part of Publicly Announced Plan	'	57,159,486		55,217,088	52,770,598	51,218,498	51,014,486	50,373,086	49,073,086	47,723,086	46,915,986	57,159,486		51,218,498	49,073,086	57,159,486		46,914,486	42,472,150	33,437,750	33,422,150	28,510,150	57,159,486
Maximum Number of Shares that May Yet Be Purchased Under the Plan @ $28.71	'	29,275,745	[1]	'	'	'	'	'	'	'	'	29,275,745	[1]	'	'	29,275,745	[1]	'	'	'	'	'	29,275,745	[1]
Share purchase price under the plan (in dollars per share)	'	$28.71		'	'	'	'	'	'	'	'	$28.71		'	'	$28.71		'	'	'	'	'	$28.71
Total Cost	'	$49.70		$64.80	$42.90	$5.60	$17.10	$35.90	$39.20	$26.10	$0.10	$157.40		$58.60	$65.40	'		$147.30	$273.70	$0.50	$71.90	$384.70	$1,159.50
Percentage of ownership interest held by the parent company	'	82.30%		'	'	'	'	'	'	'	'	82.30%		'	'	82.30%		81.30%	'	'	'	'	82.30%
[1]	NYSE closing price of SCC common shares at December 31, 2013

STOCKHOLDERS_EQUITY_Details_3

STOCKHOLDERS' EQUITY: (Details 3)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Directors' Stock Award Plan	'	'
Share based compensation plan	'	'
Common shares received on election as director	1,200	'
Additional shares issued at each annual general meeting	1,200	'
Total SCC shares reserved for the plan	600,000	600,000
Activity in directors' stock award plan	'	'
Granted at the beginning of the period (in shares)	-285,600	-271,200
Granted in the period (in shares)	-12,000	-14,400
Granted at the end of the period (in shares)	-297,600	-285,600
Remaining shares reserved	302,400	314,400
Employee Stock Purchase Plan	'	'
Share based compensation	'	'
Percentage of title acquired by employee in every two years on shares paid in previous two years	50.00%	'
The period describing the expiration of the contribution period and the bonus eligibility	'8 years	'
Bonus shares granted to participant (as a ratio)	0.1	'

STOCKHOLDERS_EQUITY_Details_4

STOCKHOLDERS' EQUITY: (Details 4)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2010
	Employee Stock Purchase Plan	Employee Stock Purchase Plan	Employee Stock Purchase Plan	New Employee Stock Purchase Plan	New Employee Stock Purchase Plan	New Employee Stock Purchase Plan	New Employee Stock Purchase Plan	New Employee Stock Purchase Plan
	USD ($)	USD ($)	USD ($)	USD ($)	USD ($)	USD ($)	USD ($)	MXN
Information related to compensation cost	'	'	'	'	'	'	'	'
Stock based compensation expense	$2.10	$2.10	$2.10	$0.60	$0.60	$0.60	'	'
Unrecognized compensation expense	$2.10	$4.20	$6.30	$2.60	$3.20	$3.80	'	'
Period over which unrecognized compensation expense expected to be recognized	'1 year	'	'	'5 years	'	'	'	'
Stock award activity, Shares	'	'	'	'	'	'	'	'
Outstanding shares at the beginning of the period	6,955,572	7,270,341	'	2,944,742	3,807,146	'	'	'
Granted (in shares)	'	'	'	226,613	'	'	'	'
Exercised (in shares)	-2,474,814	-220,430	'	-38,098	-772,850	'	'	'
Forfeited (in shares)	-31,159	-94,339	'	-120,793	-89,554	'	'	'
Outstanding shares at the end of the period	4,449,599	6,955,572	7,270,341	3,012,464	2,944,742	3,807,146	'	'
Unit Weighted Average Grant Date Fair Value	'	'	'	'	'	'	'	'
Outstanding shares at the beginning of the period (in dollars per share)	$1.16	$1.16	'	$2.05	$2.05	'	'	'
Granted (in dollars per share)	'	'	'	$2.05	'	'	'	'
Exercised (in dollars per share)	$1.16	$1.16	'	$2.05	$2.05	'	'	'
Forfeited (in dollars per share)	$1.16	$1.16	'	$2.05	$2.05	'	'	'
Outstanding shares at the end of the period (in dollars per share)	$1.16	$1.16	$1.16	$2.05	$2.05	$2.05	'	'
Purchase price for initial subscription (per share data)	'	'	'	'	'	'	$2.05	26.51

DERIVATIVE_INSTRUMENTS_Details

DERIVATIVE INSTRUMENTS: (Details) (USD $)	12 Months Ended				12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011
			Zero cost collar contracts	Zero cost collar contracts	Swap contracts
			lb	lb	lb
DERIVATIVE INSTRUMENTS:	'	'	'	'	'
Minimum correlation coefficient between average monthly copper prices on LME and COMEX exchanges (as a percent)	'	99.90%	'	'	'
Copper derivative activity related to copper sales transactions	'	'	'	'	'
Pounds	'	'	46,300,000	423,300,000	390,800,000
Average LME cap price (in dollars per unit)	'	'	5.18	3.63	'
Average LME floor price (in dollars per unit)	'	'	3.5	2.27	'
Weighted average COMEX price	'	'	'	'	3.46
Realized gain (loss) on copper derivatives	$13.50	'	'	'	$13.50

FINANCIAL_INSTRUMENTS_Details

FINANCIAL INSTRUMENTS: (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Liabilities:	'	'
Long-term debt, Carrying Value	$4,204.90	$4,213.90
Long-term debt, Fair Value	4,088.80	'
Fair value measurements recurring | Fair value as of the end of the period	'	'
Short term Investment:	'	'
Trading securities investment	202.6	127.8
Derivative:	'	'
Total assets, fair value	362.4	308
Fair value measurements recurring | Fair value as of the end of the period | Copper	'	'
Derivative:	'	'
Provisionally priced sales	53.9	70.8
Fair value measurements recurring | Fair value as of the end of the period | Molybdenum	'	'
Derivative:	'	'
Provisionally priced sales	100.2	102.9
Fair value measurements recurring | Fair value as of the end of the period | Corporate bonds	'	'
Available-for-sale debt securities:	'	'
Available-for-sale debt securities	0.4	0.4
Fair value measurements recurring | Fair value as of the end of the period | Asset backed securities	'	'
Available-for-sale debt securities:	'	'
Available-for-sale debt securities	0.1	0.1
Fair value measurements recurring | Fair value as of the end of the period | Mortgage backed securities	'	'
Available-for-sale debt securities:	'	'
Available-for-sale debt securities	5.2	6
Fair value measurements recurring | Quoted prices in active markets for identical assets (Level 1)	'	'
Short term Investment:	'	'
Trading securities investment	202.6	127.8
Derivative:	'	'
Total assets, fair value	356.7	301.5
Fair value measurements recurring | Quoted prices in active markets for identical assets (Level 1) | Copper	'	'
Derivative:	'	'
Provisionally priced sales	53.9	70.8
Fair value measurements recurring | Quoted prices in active markets for identical assets (Level 1) | Molybdenum	'	'
Derivative:	'	'
Provisionally priced sales	100.2	102.9
Fair value measurements recurring | Significant other observable inputs (Level 2)	'	'
Derivative:	'	'
Total assets, fair value	5.7	6.5
Fair value measurements recurring | Significant other observable inputs (Level 2) | Corporate bonds	'	'
Available-for-sale debt securities:	'	'
Available-for-sale debt securities	0.4	0.4
Fair value measurements recurring | Significant other observable inputs (Level 2) | Asset backed securities	'	'
Available-for-sale debt securities:	'	'
Available-for-sale debt securities	0.1	0.1
Fair value measurements recurring | Significant other observable inputs (Level 2) | Mortgage backed securities	'	'
Available-for-sale debt securities:	'	'
Available-for-sale debt securities	$5.20	$6

CONCENTRATION_OF_RISK_Details

CONCENTRATION OF RISK: (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONCENTRATION OF RISK:	'	'	'
Number of open-pit copper mines	4	'	'
Number of underground poly metallic mines	5	'	'
Number of smelters	2	'	'
Number of refineries	8	'	'
Cash equivalents	'	'	'
Concentration of risk	'	'	'
Total cash and short-term investment	1,881	'	'
Percentage of total cash	100.00%	'	'
Percentage of cash in US dollars	98.70%	'	'
Cash equivalents | United States	'	'	'
Concentration of risk	'	'	'
Total cash and short-term investment	1,020	'	'
Percentage of total cash	54.20%	'	'
Percentage invested in one institution of country	45.80%	'	'
Percentage invested in one institution of total cash	24.90%	'	'
Cash equivalents | Peru	'	'	'
Concentration of risk	'	'	'
Total cash and short-term investment	94	'	'
Percentage of total cash	5.00%	'	'
Percentage invested in one institution of country	73.70%	'	'
Percentage invested in one institution of total cash	3.70%	'	'
Cash equivalents | Mexican Operations	'	'	'
Concentration of risk	'	'	'
Total cash and short-term investment	147.1	'	'
Percentage of total cash	7.80%	'	'
Percentage invested in one institution of country	95.10%	'	'
Percentage invested in one institution of total cash	7.40%	'	'
Cash equivalents | Switzerland	'	'	'
Concentration of risk	'	'	'
Total cash and short-term investment	619.9	'	'
Percentage of total cash	33.00%	'	'
Percentage invested in one institution of country	100.00%	'	'
Percentage invested in one institution of total cash	33.00%	'	'
Accounts receivable trade | Five largest customers	'	'	'
Concentration of risk	'	'	'
Percentage of accounts receivable and total sales	37.10%	40.00%	35.90%
Accounts receivable trade | Largest customer	'	'	'
Concentration of risk	'	'	'
Percentage of accounts receivable and total sales	12.20%	10.40%	10.80%
Total sales | Five largest customers	'	'	'
Concentration of risk	'	'	'
Percentage of accounts receivable and total sales	28.70%	28.80%	28.70%
Total sales | Largest customer	'	'	'
Concentration of risk	'	'	'
Percentage of accounts receivable and total sales	8.40%	7.40%	7.30%

RELATED_PARTY_TRANSACTIONS_Det

RELATED PARTY TRANSACTIONS: (Details)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

31-May-10

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2005

Dec. 31, 2012

Dec. 31, 2011

Mar. 31, 2012

Mar. 31, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2007

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

USD ($)

USD ($)

Grupo Mexico and its affiliates

Grupo Mexico and its affiliates

Grupo Mexico and its affiliates

Grupo Mexico

Grupo Mexico

Grupo Mexico

Asarco LLC ("Asarco")

Asarco LLC ("Asarco")

Asarco LLC ("Asarco")

Ferrocarril Mexicano, S.A. de C.V.

Ferrocarril Mexicano, S.A. de C.V.

Ferrocarril Mexicano, S.A. de C.V.

Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates

Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates

Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates

Compania Perforadora Mexico S.A.P.I. de C.V.

Compania Perforadora Mexico S.A.P.I. de C.V.

Compania Perforadora Mexico S.A.P.I. de C.V.

MGE

MGE

MGE

MGE

MGE

MGE

MGE

MGE

MGE

MGE

Companies with relationship to the controlling group

Companies with relationship to the controlling group

Companies with relationship to the controlling group

Mexico Transportes Aereos S.A. de C.V. ("Mextransport")

Mexico Transportes Aereos S.A. de C.V. ("Mextransport")

Mexico Transportes Aereos S.A. de C.V. ("Mextransport")

Mexico Transportes Aereos S.A. de C.V. ("Mextransport")

Mexico Compania de Productos Automotrices, S.A. de C.V.

Companies with relationship to SCC executive officers' families

Companies with relationship to SCC executive officers' families

Companies with relationship to SCC executive officers' families

Higher Technology S.A.C.

Higher Technology S.A.C.

Higher Technology S.A.C.

Servicios y Fabricaciones Mecanicas S.A.C.

Servicios y Fabricaciones Mecanicas S.A.C.

Servicios y Fabricaciones Mecanicas S.A.C.

Sempertrans

Sempertrans

Sempertrans

PIGOBA, S.A. de C.V.

PIGOBA, S.A. de C.V.

PIGOBA, S.A. de C.V.

Breaker, S.A. de C.V

Breaker, S.A. de C.V

Breaker, S.A. de C.V

Grupo Mexico, S.A.B de C.V. ( Grupo Mexico ) and affiliates

Grupo Mexico, S.A.B de C.V. ( Grupo Mexico ) and affiliates

Equity investment in affiliate

Equity investment in affiliate

Sempertrans and affiliates

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

item

Line of credit

Line of credit

Maximum

Controladora de Infraestructura Energetica Mexico, S. A. de C. V.

Controladora de Infraestructura Energetica Mexico, S. A. de C. V.

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Mexican subsidiaries

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

MXN

item

Related party transactions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Related parties receivables current:

$38,062,000

$25,740,000

'

'

'

'

'

'

'

'

'

'

'

'

$600,000

'

'

$700,000

$500,000

'

'

'

$18,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$800,000

$1,800,000

$17,200,000

$23,400,000

'

Related parties receivable non-current:

161,244,000

183,950,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

161,200,000

184,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Related parties payables:

28,373,000

20,310,000

'

'

'

'

'

'

6,200,000

15,300,000

'

3,300,000

2,600,000

'

'

2,100,000

'

'

'

'

'

'

14,400,000

'

'

'

'

'

'

'

'

'

'

600,000

100,000

'

'

'

'

'

'

100,000

200,000

'

'

'

'

'

'

'

'

'

'

300,000

'

'

3,300,000

'

'

'

100,000

Total purchases from related parties

'

'

206,400,000

138,100,000

88,900,000

13,800,000

13,900,000

13,900,000

98,000,000

58,600,000

23,400,000

19,700,000

13,900,000

11,600,000

54,400,000

49,500,000

38,200,000

6,100,000

2,200,000

1,800,000

'

'

14,400,000

'

'

'

'

'

'

'

2,700,000

2,700,000

3,000,000

2,700,000

2,700,000

2,800,000

'

200,000

7,900,000

6,700,000

8,200,000

2,200,000

3,100,000

1,900,000

400,000

200,000

600,000

1,100,000

300,000

200,000

300,000

800,000

200,000

3,900,000

2,300,000

5,300,000

'

'

'

'

'

Sales revenues from related parties

'

'

'

'

'

'

'

'

88,700,000

23,500,000

68,800,000

'

'

'

800,000

500,000

500,000

600,000

'

200,000

'

'

27,300,000

'

'

'

'

'

'

'

'

'

'

300,000

900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total sales revenues from related parties

'

'

117,400,000

24,000,000

69,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of power plants

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

350,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4.40%

'

'

5.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.35%

'

'

Ownership percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

100.00%

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

44.20%

'

'

Value of interest acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

150,000,000

1,928,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loan repaid

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

150,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

18,400,000

'

'

Loan granted

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

37,600,000

146,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

56,600,000

'

'

Number of loans guaranteed by subsidiaries

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basis of variable interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'6 months Libor

'

'

Spread on variable interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.00%

'

'

Remaining balance at December 31, 2013

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

17,200,000

'

'

Interest earned

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$9,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$900,000

$1,900,000

'

SEGMENT_AND_RELATED_INFORMATIO2

SEGMENT AND RELATED INFORMATION: (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
									segment
									country
SEGMENT AND RELATED INFORMATION:	'	'	'	'	'	'	'	'	'	'	'
Number of reportable segments	'	'	'	'	'	'	'	'	3	'	'
Financial information related to segments	'	'	'	'	'	'	'	'	'	'	'
Number of countries having open-pit operations	'	'	'	'	'	'	'	'	2	'	'
Financial information relating to segments	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	$5,952,900,000	$6,669,300,000	$6,818,700,000
Cost of sales (exclusive of depreciation, amortization and depletion)	'	'	'	'	'	'	'	'	2,871,299,000	2,769,233,000	2,763,152,000
Selling, general and administrative	'	'	'	'	'	'	'	'	102,579,000	101,297,000	104,473,000
Depreciation, amortization and depletion	'	'	'	'	'	'	'	'	395,970,000	325,743,000	288,138,000
Legal fees related to SCC shareholder derivative lawsuit (Note 14)	'	'	'	'	'	'	'	'	'	316,233,000	'
Exploration	'	'	'	'	'	'	'	'	50,983,000	47,877,000	37,535,000
Operating income	615,900,000	580,900,000	565,300,000	770,000,000	812,600,000	447,800,000	875,600,000	972,900,000	2,532,112,000	3,108,883,000	3,625,423,000
Interest, net	'	'	'	'	'	'	'	'	-176,600,000	-157,200,000	-172,800,000
Other income (expense)	'	'	'	'	'	'	'	'	17,106,000	21,833,000	-4,043,000
Income taxes	'	'	'	'	'	'	'	'	-769,322,000	-1,080,872,000	-1,104,335,000
Equity earnings of affiliate	'	'	'	'	'	'	'	'	20,905,000	48,702,000	'
Non-controlling interest	'	'	'	'	'	'	'	'	-5,664,000	-6,740,000	-7,929,000
Net income attributable to SCC	406,200,000	344,200,000	372,700,000	495,400,000	531,800,000	217,900,000	563,500,000	621,400,000	1,618,517,000	1,934,632,000	2,336,424,000
Capital expenditures	'	'	'	'	'	'	'	'	1,703,300,000	1,051,900,000	612,900,000
Property, net	6,476,168,000	'	'	'	5,156,731,000	'	'	'	6,476,168,000	5,156,731,000	4,429,900,000
Total assets	11,210,422,000	'	'	'	10,383,749,000	'	'	'	11,210,422,000	10,383,749,000	8,062,700,000
Mexican Open-pit	'	'	'	'	'	'	'	'	'	'	'
Financial information related to segments	'	'	'	'	'	'	'	'	'	'	'
Number of open-pit copper mines	'	'	'	'	'	'	'	'	2	'	'
Financial information relating to segments	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	2,976,700,000	3,339,000,000	3,212,100,000
Cost of sales (exclusive of depreciation, amortization and depletion)	'	'	'	'	'	'	'	'	1,308,900,000	1,228,200,000	1,115,800,000
Selling, general and administrative	'	'	'	'	'	'	'	'	35,400,000	34,400,000	34,100,000
Depreciation, amortization and depletion	'	'	'	'	'	'	'	'	178,900,000	145,600,000	133,600,000
Exploration	'	'	'	'	'	'	'	'	3,200,000	5,200,000	3,500,000
Operating income	'	'	'	'	'	'	'	'	1,450,300,000	1,925,600,000	1,925,100,000
Capital expenditures	'	'	'	'	'	'	'	'	1,209,900,000	804,400,000	357,600,000
Property, net	3,579,900,000	'	'	'	2,444,900,000	'	'	'	3,579,900,000	2,444,900,000	1,827,200,000
Total assets	6,010,300,000	'	'	'	4,241,400,000	'	'	'	6,010,300,000	4,241,400,000	3,471,600,000
Mexican IMMSA Unit	'	'	'	'	'	'	'	'	'	'	'
Financial information related to segments	'	'	'	'	'	'	'	'	'	'	'
Number of underground poly metal mines	'	'	'	'	'	'	'	'	5	'	'
Financial information relating to segments	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	361,600,000	378,000,000	420,100,000
Intersegment sales	'	'	'	'	'	'	'	'	96,900,000	135,000,000	126,100,000
Cost of sales (exclusive of depreciation, amortization and depletion)	'	'	'	'	'	'	'	'	320,700,000	292,400,000	309,300,000
Selling, general and administrative	'	'	'	'	'	'	'	'	15,100,000	14,600,000	14,700,000
Depreciation, amortization and depletion	'	'	'	'	'	'	'	'	31,000,000	25,200,000	24,500,000
Exploration	'	'	'	'	'	'	'	'	27,200,000	28,200,000	22,000,000
Operating income	'	'	'	'	'	'	'	'	64,500,000	152,600,000	175,700,000
Capital expenditures	'	'	'	'	'	'	'	'	60,600,000	56,000,000	48,700,000
Property, net	378,200,000	'	'	'	350,900,000	'	'	'	378,200,000	350,900,000	320,100,000
Total assets	895,600,000	'	'	'	873,100,000	'	'	'	895,600,000	873,100,000	743,400,000
Peruvian Operations	'	'	'	'	'	'	'	'	'	'	'
Financial information related to segments	'	'	'	'	'	'	'	'	'	'	'
Number of open-pit copper mines	'	'	'	'	'	'	'	'	2	'	'
Financial information relating to segments	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	2,614,600,000	2,952,300,000	3,186,500,000
Cost of sales (exclusive of depreciation, amortization and depletion)	'	'	'	'	'	'	'	'	1,358,600,000	1,380,500,000	1,441,000,000
Selling, general and administrative	'	'	'	'	'	'	'	'	49,800,000	48,500,000	50,800,000
Depreciation, amortization and depletion	'	'	'	'	'	'	'	'	177,200,000	160,300,000	140,600,000
Exploration	'	'	'	'	'	'	'	'	20,600,000	14,500,000	12,000,000
Operating income	'	'	'	'	'	'	'	'	1,008,400,000	1,348,500,000	1,542,100,000
Capital expenditures	'	'	'	'	'	'	'	'	372,300,000	257,800,000	205,500,000
Property, net	2,451,400,000	'	'	'	2,231,400,000	'	'	'	2,451,400,000	2,231,400,000	2,225,900,000
Total assets	3,753,700,000	'	'	'	3,353,000,000	'	'	'	3,753,700,000	3,353,000,000	3,164,000,000
Corporate, other and eliminations	'	'	'	'	'	'	'	'	'	'	'
Financial information relating to segments	'	'	'	'	'	'	'	'	'	'	'
Intersegment sales	'	'	'	'	'	'	'	'	-96,900,000	-135,000,000	-126,100,000
Cost of sales (exclusive of depreciation, amortization and depletion)	'	'	'	'	'	'	'	'	-116,900,000	-131,900,000	-102,900,000
Selling, general and administrative	'	'	'	'	'	'	'	'	2,300,000	3,800,000	4,900,000
Depreciation, amortization and depletion	'	'	'	'	'	'	'	'	8,800,000	-5,300,000	-10,600,000
Legal fees related to SCC shareholder derivative lawsuit (Note 14)	'	'	'	'	'	'	'	'	'	316,200,000	'
Operating income	'	'	'	'	'	'	'	'	8,900,000	-317,800,000	-17,500,000
Capital expenditures	'	'	'	'	'	'	'	'	60,500,000	-66,300,000	1,100,000
Property, net	66,700,000	'	'	'	129,500,000	'	'	'	66,700,000	129,500,000	56,700,000
Total assets	$550,800,000	'	'	'	$1,916,200,000	'	'	'	$550,800,000	$1,916,200,000	$683,700,000

SEGMENT_AND_RELATED_INFORMATIO3

SEGMENT AND RELATED INFORMATION: (Details 2) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	$1,535,200	$1,384,500	$1,410,200	$1,623,000	$1,651,100	$1,552,400	$1,659,900	$1,805,900	$5,952,943	$6,669,266	$6,818,721
Copper	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	4,654,800	5,136,900	5,229,600
Molybdenum	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	390,100	450,500	544,100
Silver	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	393,700	495,300	492,400
Zinc	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	200,300	195,900	209,800
Other	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	314,000	390,700	342,800
Mexican Open-pit	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	2,976,700	3,339,000	3,212,100
Mexican Open-pit | Copper	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	2,365,500	2,604,900	2,509,600
Mexican Open-pit | Molybdenum	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	242,200	271,300	310,800
Mexican Open-pit | Silver	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	242,700	280,500	248,100
Mexican Open-pit | Other	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	126,300	182,300	143,600
Mexican IMMSA Unit	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	458,500	513,000	546,200
Mexican IMMSA Unit | Copper	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	48,400	62,300	57,200
Mexican IMMSA Unit | Silver	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	110,100	161,500	184,200
Mexican IMMSA Unit | Zinc	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	200,300	195,900	209,800
Mexican IMMSA Unit | Other	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	99,700	93,300	95,000
Peruvian Operations	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	2,614,600	2,952,300	3,186,500
Peruvian Operations | Copper	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	2,289,300	2,532,000	2,720,000
Peruvian Operations | Molybdenum	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	147,900	179,200	233,300
Peruvian Operations | Silver	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	79,700	113,600	121,200
Peruvian Operations | Other	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	97,700	127,500	112,000
Corporate, other and eliminations	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	-96,900	-135,000	-126,100
Corporate, other and eliminations | Copper	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	-48,400	-62,300	-57,200
Corporate, other and eliminations | Silver	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	-38,800	-60,300	-61,100
Corporate, other and eliminations | Other	'	'	'	'	'	'	'	'	'	'	'
SALES VALUE PER SEGMENT:	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	($9,700)	($12,400)	($7,800)

SEGMENT_AND_RELATED_INFORMATIO4

SEGMENT AND RELATED INFORMATION: (Details 3) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of revenue by geographical location	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	$1,535,200,000	$1,384,500,000	$1,410,200,000	$1,623,000,000	$1,651,100,000	$1,552,400,000	$1,659,900,000	$1,805,900,000	$5,952,943,000	$6,669,266,000	$6,818,721,000
Derivative instruments	'	'	'	'	'	'	'	'	'	'	13,500,000
United States	'	'	'	'	'	'	'	'	'	'	'
Schedule of revenue by geographical location	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	1,031,200,000	1,567,400,000	2,103,700,000
Europe	'	'	'	'	'	'	'	'	'	'	'
Schedule of revenue by geographical location	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	1,057,500,000	1,365,100,000	1,292,100,000
Mexican Operations	'	'	'	'	'	'	'	'	'	'	'
Schedule of revenue by geographical location	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	1,403,300,000	1,676,400,000	1,269,300,000
Peru	'	'	'	'	'	'	'	'	'	'	'
Schedule of revenue by geographical location	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	324,800,000	296,200,000	261,700,000
Brazil	'	'	'	'	'	'	'	'	'	'	'
Schedule of revenue by geographical location	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	471,000,000	449,000,000	598,500,000
Chile	'	'	'	'	'	'	'	'	'	'	'
Schedule of revenue by geographical location	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	366,100,000	443,500,000	515,800,000
Latin America, other	'	'	'	'	'	'	'	'	'	'	'
Schedule of revenue by geographical location	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	391,800,000	108,300,000	101,200,000
Asia	'	'	'	'	'	'	'	'	'	'	'
Schedule of revenue by geographical location	'	'	'	'	'	'	'	'	'	'	'
Net sales outside of segments	'	'	'	'	'	'	'	'	$907,200,000	$763,400,000	$662,900,000

SEGMENT_AND_RELATED_INFORMATIO5

SEGMENT AND RELATED INFORMATION: (Details 4) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Provisionally priced sales	'	'
Provisional price sales adjustment amounts included in net sales	$1.60	$6.60
Copper	'	'
Provisionally priced sales	'	'
Provisional price sales adjustment amounts included in accounts receivable	1	2.9
Copper | January through February 2014	'	'
Provisionally priced sales	'	'
Nonmonetary notional amount of commodity (in million lbs.)	16,100,000	'
Provisional price	3.344	'
Molybdenum	'	'
Provisionally priced sales	'	'
Provisional price sales adjustment amounts included in accounts receivable	$0.60	$3.70
Molybdenum | January 2014 through April 2014	'	'
Provisionally priced sales	'	'
Nonmonetary notional amount of commodity (in million lbs.)	10,300,000	'
Provisional price	9.7	'

SEGMENT_AND_RELATED_INFORMATIO6

SEGMENT AND RELATED INFORMATION: (Details 5)	12 Months Ended
	Dec. 31, 2013
	T
Copper cathodes | Mitsui	'
Long-term sales contract	'
Quantity to be supplied (in tons)	48,000
Quantity to be supplied related to prior contract (period 1994-2000) (in tons)	90,000
Quantity to be supplied related to prior contract in 2014 (in tons)	48,000
Quantity to be supplied related to prior contract in 2015 (in tons)	42,000
Quantity to be supplied related to additional annual contract in 2015 (in tons)	6,000
Quantity to be supplied related to additional annual contract from 2016 until 2019 (in tons)	48,000
Additional term in which contract may be renewed	'5 years
Copper cathodes | Mitsui | Tia Maria	'
Long-term sales contract	'
Quantity to be supplied following the full startup of project (in tons)	24,000
Molybdenum concentrates | Molibdenos y Metales	'
Long-term sales contract	'
Quantity to be supplied (in tons)	29,300
Period for which contract can be extended	'1 year
Minimum period for which contract is to be maintained	'3 years
Molybdenum concentrates | Molymex	'
Long-term sales contract	'
Minimum percentage of total production required to be supplied	85.00%

QUARTERLY_DATA_unaudited_Detai

QUARTERLY DATA (unaudited) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
QUARTERLY DATA (unaudited)	'	'	'	'	'	'	'	'	'	'		'
Net sales	$1,535,200,000	$1,384,500,000	$1,410,200,000	$1,623,000,000	$1,651,100,000	$1,552,400,000	$1,659,900,000	$1,805,900,000	$5,952,943,000	$6,669,266,000		$6,818,721,000
Gross profit	658,500,000	617,000,000	604,400,000	805,700,000	853,400,000	800,200,000	913,600,000	1,007,100,000	2,685,600,000	3,574,300,000		'
Operating income	615,900,000	580,900,000	565,300,000	770,000,000	812,600,000	447,800,000	875,600,000	972,900,000	2,532,112,000	3,108,883,000		3,625,423,000
Net income	407,500,000	345,600,000	374,100,000	497,000,000	533,200,000	219,300,000	565,300,000	623,600,000	1,624,181,000	1,941,372,000		2,344,353,000
Net income attributable to SCC	406,200,000	344,200,000	372,700,000	495,400,000	531,800,000	217,900,000	563,500,000	621,400,000	1,618,517,000	1,934,632,000		2,336,424,000
Per share amounts attributable to SCC:	'	'	'	'	'	'	'	'	'	'		'
Net earnings basic and diluted (in dollars per share)	$0.48	$0.41	$0.44	$0.59	$0.63	$0.26	$0.66	$0.73	$1.92	$2.28	[1]	$2.73
Dividend per share	$0.12	$0.12	$0.20	$0.24	$2.75	$0.24	$0.53	$0.54	$0.68	$4.06		$2.43
Legal fees related to SCC shareholders derivative lawsuit	'	'	'	'	'	$316,200,000	'	'	'	'		'
Cash dividend	'	'	'	'	'	'	'	$0.19	'	'		'
Stock dividend	'	'	'	'	'	'	'	$0.35	'	'		'
[1]	Number of shares and per share amounts have been retroactively adjusted in the financial statements to reflect the effect of the 9.0 million shares paid as stock dividend on February 28, 2012.

SUBSEQUENT_EVENTS_Details

SUBSEQUENT EVENTS (Details) (Dividend authorized, USD $)	0 Months Ended
	Jan. 30, 2014
Dividend authorized	'
DIVIDENDS:	'
Quarterly cash dividend authorized (in cents per share)	$0.12