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Provisions and other non-financial liabilities (Tables)
12 Months Ended
Dec. 31, 2019
Disclosure of other provisions [abstract]  
Disclosure of detailed information about provisions [Text Block]
18.1
         
Types of provisions
 
 
 
As of December 31, 2019
 
 
As of December 31, 2018
 
Types of provisions
 
Current
 
 
Non-current
 
 
Total
 
 
Current
 
 
Non-current
 
 
Total
 
 
 
ThUS$
 
 
ThUS$
 
 
ThUS$
 
 
ThUS$
 
 
ThUS$
 
 
ThUS$
 
Provision for legal complaints
(1)
 
 
13,472
 
 
 
1,452
 
 
 
14,924
 
 
 
11,862
 
 
 
3,000
 
 
 
14,862
 
Provision for dismantling, restoration and rehabilitation cost (2)
 
 
-
 
 
 
33,238
 
 
 
33,238
 
 
 
-
 
 
 
28,822
 
 
 
28,822
 
Other provisions
(3)
 
 
97,093
 
 
 
-
 
 
 
97,093
 
 
 
94,335
 
 
 
-
 
 
 
94,335
 
Total
 
 
110,565
 
 
 
34,690
 
 
 
145,255
 
 
 
106,197
 
 
 
31,822
 
 
 
138,019
 
 
(1) These provisions correspond to legal processes that are pending resolution or that have not yet been disbursed. These provisions are mainly related to litigation involving the subsidiaries located in Chile, Brazil and the United States (see note 21.1).
(2) The provisions related to commitments with Sernageomin have been incorporated through the issuance of a guarantee for the restoration of the place where the production sites are located.
(3) See Note 18.2
Description of detailed information about other current and noncurrent provision [Text Block]
18.2
         
Description of other provisions
 
Current provisions, other short-term provisions
 
As of December

31, 2019
 
 
As of December

31, 2018
 
 
 
ThUS$
 
 
ThUS$
 
Rent under lease contract (1)
 
 
90,320
 
 
 
84,826
 
Provision for additional tax related to foreign loans
 
 
543
 
 
 
471
 
End of agreement bonus
 
 
3,641
 
 
 
5,129
 
Directors’ per diem allowance
 
 
1,802
 
 
 
2,881
 
Miscellaneous provisions
 
 
787
 
 
 
1,028
 
Total
 
 
97,093
 
 
 
94,335
 
 
(1) Payment obligations for the lease contract with CORFO: These correspond to obligations assumed in the
Lease Agreement. Part of these obligations are the quarterly lease payments to Corfo, according to SQM Salar's product sales from leased mining properties. Since 2018, another part are the annual contributions by SQM Salar to research and development, to local communities to the Antofagasta Regional Government and to the municipalities of San Pedro de Atacama, María Elena and Antofagasta
.
Disclosure of other current liabilities [text block]
18.3
Other non-financial liabilities, current
 
Description of other liabilities
 
As of December

31, 2019
 
 
As of December

31, 2018
 
 
 
ThUS$
 
 
ThUS$
 
Tax withholdings
 
 
3,345
 
 
 
4,782
 
VAT payable
 
 
3,465
 
 
 
7,345
 
Guarantees received
 
 
2,641
 
 
 
2,641
 
Accrual for dividend
 
 
68,890
 
 
 
109,670
 
Monthly tax provisional payments
 
 
16,659
 
 
 
21,001
 
Deferred income
 
 
3,033
 
 
 
18,574
 
Withholdings from employees and salaries payable
 
 
4,575
 
 
 
6,052
 
Accrued vacations (1)
 
 
21,686
 
 
 
20,070
 
Other current liabilities
 
 
2,605
 
 
 
4,489
 
Total
 
 
126,899
 
 
 
194,624
 
 
(1) Vacation benefit (short-term benefits to employees, current) is in line with the provisions established in Chile’s Labor Code, which indicates that employees with more than a year of service will be entitled to annual vacation for a period of at least fifteen paid business days
. The Company provides the benefit of two additional vacation days
.
Disclosure of reconciliation of changes in other provisions [Text Block]
18.4
       
Changes in provisions
 
Description of items that gave rise to variations as of December 

31, 2019
 
Legal complaints
 
 
Provision for

dismantling,

restoration and

rehabilitation cost
 
 
Other provisions
 
 
Total
 
 
 
ThUS$
 
 
ThUS$
 
 
ThUS$
 
 
ThUS$
 
Total provisions, initial balance
 
 
14,862
 
 
 
28,822
 
 
 
94,335
 
 
 
138,019
 
Changes
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Additional provisions
 
 
4,111
 
 
 
4,416
 
 
 
150,314
 
 
 
158,841
 
Provision used
 
 
(4,049
)
 
 
-
 
 
 
(147,532
)
 
 
(151,581
)
Increase(decrease) in foreign currency exchange
 
 
-
 
 
 
-
 
 
 
(24
)
 
 
(24
)
others
 
 
-
 
 
 
-
 
 
 
-
 
 
 
-
 
Total Increase (decreases)
 
 
62
 
 
 
4,416
 
 
 
2,758
 
 
 
7,236
 
Total
 
 
14,924
 
 
 
33,238
 
 
 
97,093
 
 
 
145,255
 
 
Description of items that gave rise to variations as of December

31, 2018
 
Legal complaints
 
 
Provision for

dismantling,

restoration and

rehabilitation cost
 
 
Other provisions
 
 
Total
 
 
 
ThUS$
 
 
ThUS$
 
 
ThUS$
 
 
ThUS$
 
Total provisions, initial balance
 
 
19,419
 
 
 
26,954
 
 
 
47,073
 
 
 
93,446
 
Changes
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Additional provisions
 
 
1,000
 
 
 
1,820
 
 
 
181,244
 
 
 
184,064
 
Provision used
 
 
(5,557
)
 
 
-
 
 
 
(133,949
)
 
 
(139,506
)
Increase(decrease) in foreign currency exchange
 
 
-
 
 
 
-
 
 
 
-
 
 
 
-
 
others
 
 
-
 
 
 
48
 
 
 
(33
)
 
 
15
 
Total Increase (decreases)
 
 
(4,557
)
 
 
1,868
 
 
 
47,262
 
 
 
44,573
 
Total
 
 
14,862
 
 
 
28,822
 
 
 
94,335
 
 
 
138,019
 
 
Description of items that gave rise to variations as of December

31, 2017
 
Legal complaints
 
 
Provision for

dismantling,

restoration and

rehabilitation cost
 
 
Other provisions
 
 
Total
 
 
 
ThUS$
 
 
ThUS$
 
 
ThUS$
 
 
ThUS$
 
Total provisions, initial balance
 
 
23,867
 
 
 
5,890
 
 
 
21,089
 
 
 
50,846
 
Changes
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Additional provisions
 
 
6,352
 
 
 
21,064
 
 
 
33,507
 
 
 
60,923
 
Provision used
 
 
(10,800
)
 
 
-
 
 
 
(7,538
)
 
 
(18,338
)
Increase(decrease) in foreign currency exchange
 
 
-
 
 
 
-
 
 
 
9
 
 
 
9
 
others
 
 
-
 
 
 
-
 
 
 
6
 
 
 
6
 
Total Increase (decreases)
 
 
(4,448
)
 
 
21,064
 
 
 
25,984
 
 
 
42,600
 
Total
 
 
19,419
 
 
 
26,954
 
 
 
47,073
 
 
 
93,446