XML 198 R184.htm IDEA: XBRL DOCUMENT v3.19.1
Tax situation (Details Textual)
 1 Months Ended 3 Months Ended 12 Months Ended
Jan. 02, 2014
Oct. 31, 2018
USD ($)
Oct. 31, 2018
PEN (S/)
Jan. 02, 2017
Dec. 31, 2014
Jul. 17, 2012
Sep. 28, 2011
Jun. 30, 2019
USD ($)
Jun. 30, 2019
PEN (S/)
Dec. 31, 2011
USD ($)
Dec. 31, 2011
PEN (S/)
Dec. 31, 2018
USD ($)
Dec. 31, 2018
PEN (S/)
Dec. 31, 2017
USD ($)
Dec. 31, 2017
PEN (S/)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
USD ($)
Dec. 31, 2013
PEN (S/)
Dec. 31, 2012
USD ($)
Dec. 31, 2012
PEN (S/)
Dec. 31, 2008
USD ($)
Dec. 31, 2007
USD ($)
Dec. 31, 2006
USD ($)
Dec. 31, 2018
PEN (S/)
Dec. 31, 2017
PEN (S/)
Jun. 27, 2016
USD ($)
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Applicable tax rate                       32.00% 32.00% 32.00% 32.00%                          
Income Tax Rate Applicable To Dividends                       5.00% 5.00%                              
Applicable Tax Rate With Respect To Results Obtained                                 6.80% 4.10%                    
Unused tax losses for which no deferred tax asset recognised                       $ 458,762,000   $ 398,378,000                       S/ 1,550,156,000 S/ 1,346,118,000  
Mining royalties                       21,526,000   31,217,000   $ 27,611,000             $ 13,200,000 $ 13,200,000 $ 13,200,000      
Valuation allowance on deferred income tax asset                       24,000,000   51,000,000   386,000,000                        
Term of agreement of guarantees and measures to promote investments           15 years                                            
Penalties and interest paid to government   $ 165,700,000                                                    
Tax payment, Estimate of Possible Loss   $ 274,900,000 S/ 928,900,000                                                  
Tax payment based on exchange rates                       176,600,000                                
Tax payment based on estimated due                       187,700,000 S/ 596,800,000                              
Penalties and interest for default tax                   $ 8,700,000                                    
Notional amount                       275,000,000   275,000,000                           $ 275,000,000
Current tax expense (income)                       16,928,000   23,837,000   39,444,000                        
Current tax expense income relating to special mining tax                       (28,200,000)   102,600,000   14,900,000                        
Current tax expense income relating to mining royalties                       34,900,000   110,700,000   22,900,000                        
Current tax expense income relating to statutory retirement fund                       1,500,000   10,900,000   2,200,000                        
Deferred tax expense (income)                       9,998,000   (5,825,000)   14,060,000                        
Tax expense (income), continuing operations                       $ (26,926,000)   $ (18,012,000)   $ (53,504,000)                        
Amount of the assessment, including interest and penalties                   $ 15,900,000 S/ 53,700,000                                  
Bottom of range [member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Royalty rate on revenue 1.00%                                                      
Top of range [member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Royalty rate on revenue 12.00%                                                      
Peruvian government [Member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Applicable tax rate                       32.00% 32.00%                              
Minera Yanacocha SRL and subsidiary [Member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Applicable tax rate       29.50%               29.50% 29.50% 29.50% 29.50% 28.00%                        
Maximum mining tax rate on operating profit             12.00%                                          
Mining royalties                       $ 1,273,000   $ 3,140,000   $ 3,742,000                        
Employers contribution rate                       0.50% 0.50%                              
Employees Contribution Rate                       0.50% 0.50%                              
Income and mining tax expense                       $ 39,000   29,000   141,000                        
Term of agreement of guarantees and measures to promote investments                       15 years 15 years                              
Current tax expense (income)                       $ 30,368,000   7,026,000   43,127,000                        
Deferred tax expense (income)                       (1,071,000)   0   0                        
Tax expense (income), continuing operations                       29,297,000   7,026,000   43,127,000                        
Minera Yanacocha SRL and subsidiary [Member] | Special Mining Burden GEM [Member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Additional income and mining tax expense                       8,230,000   3,526,000   6,945,000                        
Minera Yanacocha SRL and subsidiary [Member] | Special mining tax rate IEM [Member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Mining tax expense                       $ 592,000   $ 1,418,000   $ 3,259,000                        
Minera Yanacocha SRL and subsidiary [Member] | Special mining tax rate IEM [Member] | Bottom of range [member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Mining tax rate on operating profit                       2.00% 2.00%                              
Minera Yanacocha SRL and subsidiary [Member] | Special mining tax rate IEM [Member] | Top of range [member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Mining tax rate on operating profit                       8.40% 8.40%                              
Minera Yanacocha SRL and subsidiary [Member] | Special mining burden rateGEM [Member] | Bottom of range [member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Mining tax rate on operating profit                       4.00% 4.00%                              
Minera Yanacocha SRL and subsidiary [Member] | Special mining burden rateGEM [Member] | Top of range [member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Mining tax rate on operating profit                       13.12% 13.12%                              
Minera Yanacocha SRL and subsidiary [Member] | Peruvian government [Member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Royalty rate on revenue 1.00%           1.00%                                          
Minera Yanacocha SRL and subsidiary [Member] | Fiscal year 2015 [Member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Progressive income tax rate         28.00%                                              
Minera Yanacocha SRL and subsidiary [Member] | Fiscal year 2017 [Member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Progressive income tax rate         27.00%                                              
Minera Yanacocha SRL and subsidiary [Member] | Fiscal year 2019 [Member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Progressive income tax rate         26.00%                                              
Sociedad Minera Cerro Verde S.A.A. [Member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Applicable tax rate                       32.00% 32.00% 32.00% 32.00% 32.00%                        
Mining royalties payable                       $ 332,300,000   $ 82,100,000                       1,122,900,000 266,300,000  
Current tax expense (income)                       (325,170,000)   430,974,000   $ 141,153,000                        
Deferred tax expense (income)                       0   (167,541,000)   81,441,000                        
Tax expense (income), continuing operations                       325,170,000   (486,043,000)   $ (263,082,000)                        
Amount of the assessment, including interest and penalties               $ 280,300,000 S/ 947,200,000     69,300,000 S/ 234,000,000 76,100,000 S/ 254,700,000       $ 89,900,000 S/ 303,800,000 $ 71,300,000 S/ 240,900,000            
Sociedad Minera Cerro Verde S.A.A. [Member] | Letters of Credit [Member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Notional amount                       $ 336,600,000   $ 86,500,000                       S/ 1,137,400,000 S/ 280,800,000  
Changes in tax rates or tax laws enacted or announced [member]                                                        
Disclosure Of Income Tax Explanatory [Line Items]                                                        
Applicable Tax Rate With Respect To Results Obtained                           5.00% 5.00%