XML 169 R164.htm IDEA: XBRL DOCUMENT v3.20.1
Provisions and other non-financial liabilities (Details 3) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of Provisions and other non-financial liabilities [Line Items]      
Total provisions, initial balance $ 138,019 $ 93,446 $ 50,846
Changes in provisions:      
Additional provisions 158,841 184,064 60,923
Provision used (3,736) (139,506) (4,921)
Increase(decrease) in foreign currency exchange (24) 0 9
others 0 15 6
Total Increase (decreases) 7,236 44,573 42,600
Total provisions, final balance 145,255 138,019 93,446
Legal proceedings provision [member]      
Disclosure of Provisions and other non-financial liabilities [Line Items]      
Total provisions, initial balance 14,862 19,419 23,867
Changes in provisions:      
Additional provisions 4,111 1,000 6,352
Provision used (4,049) (5,557) (10,800)
Increase(decrease) in foreign currency exchange 0 0 0
others 0 0 0
Total Increase (decreases) 62 (4,557) (4,448)
Total provisions, final balance 14,924 14,862 19,419
Provision for decommissioning, restoration and rehabilitation costs [member]      
Disclosure of Provisions and other non-financial liabilities [Line Items]      
Total provisions, initial balance 28,822 26,954 5,890
Changes in provisions:      
Additional provisions 4,416 1,820 21,064
Provision used 0 0 0
Increase(decrease) in foreign currency exchange 0 0 0
others 0 48 0
Total Increase (decreases) 4,416 1,868 21,064
Total provisions, final balance 33,238 28,822 26,954
Miscellaneous other provisions [member]      
Disclosure of Provisions and other non-financial liabilities [Line Items]      
Total provisions, initial balance 94,335 47,073 21,089
Changes in provisions:      
Additional provisions 150,314 181,244 33,507
Provision used (147,532) (133,949) (7,538)
Increase(decrease) in foreign currency exchange (24) 0 9
others 0 (33) 6
Total Increase (decreases) 2,758 47,262 25,984
Total provisions, final balance $ 97,093 $ 94,335 $ 47,073