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Gains (losses) from operating activities in the statement of income, included according to their nature (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure Of Revenue From Products and Services [Abstract] |
Disclosure of disaggregation of revenue from contracts with customers [text block] | The Group derives revenues from the sale of goods (which are recognized at one point in time) and from the provision of services (which are recognized over time) and are distributed among the following geographical areas and main product and service lines:
| (a) | Geographic areas:
For the year ended December 31, 2021
Geographic areas |  | Specialty plant nutrition |  |  | Iodine and derivatives |  |  | Lithium and derivatives |  |  | Potassium |  |  | Industrial chemicals |  |  | Other |  |  | Total ThUS$ |
Chile |  |  | 136,523 |  |  |  | 1,538 |  |  |  | 901 |  |  |  | 50,573 |  |  |  | 4,125 |  |  |  | 25,988 |  |  |  | 219,648 |
Latin America and the Caribbean |  |  | 88,990 |  |  |  | 10,198 |  |  |  | 4,905 |  |  |  | 214,304 |  |  |  | 7,367 |  |  |  | 523 |  |  |  | 326,287 |
Europe |  |  | 179,744 |  |  |  | 173,329 |  |  |  | 75,674 |  |  |  | 33,948 |  |  |  | 18,662 |  |  |  | 1,408 |  |  |  | 482,765 |
North America |  |  | 314,895 |  |  |  | 102,746 |  |  |  | 50,349 |  |  |  | 57,682 |  |  |  | 29,860 |  |  |  | 2,470 |  |  |  | 558,002 |
Asia and Others |  |  | 188,663 |  |  |  | 150,120 |  |  |  | 804,292 |  |  |  | 60,085 |  |  |  | 71,997 |  |  |  | 456 |  |  |  | 1,275,613 |
Total |  |  | 908,815 |  |  |  | 437,931 |  |  |  | 936,121 |  |  |  | 416,592 |  |  |  | 132,011 |  |  |  | 30,845 |  |  |  | 2,862,315 |
For the year ended as of December 31, 2020
Geographic areas |  | Specialty plant nutrition |  |  | Iodine and derivatives |  |  | Lithium and derivatives |  |  | Potassium |  |  | Industrial chemicals |  |  | Other |  |  | Total ThUS$ |
Chile |  |  | 100,353 |  |  |  | 1,234 |  |  |  | 399 |  |  |  | 23,963 |  |  |  | 4,059 |  |  |  | 23,737 |  |  |  | 153,745 |
Latin America and the Caribbean |  |  | 69,535 |  |  |  | 10,843 |  |  |  | 1,597 |  |  |  | 72,697 |  |  |  | 4,951 |  |  |  | 367 |  |  |  | 159,990 |
Europa |  |  | 145,896 |  |  |  | 142,161 |  |  |  | 49,719 |  |  |  | 30,029 |  |  |  | 11,585 |  |  |  | 735 |  |  |  | 380,125 |
North America |  |  | 246,737 |  |  |  | 90,292 |  |  |  | 25,558 |  |  |  | 39,432 |  |  |  | 23,963 |  |  |  | 1,588 |  |  |  | 427,570 |
Asia and Others |  |  | 139,167 |  |  |  | 90,127 |  |  |  | 306,100 |  |  |  | 43,173 |  |  |  | 116,050 |  |  |  | 1,144 |  |  |  | 695,761 |
Total |  |  | 701,688 |  |  |  | 334,657 |  |  |  | 383,373 |  |  |  | 209,294 |  |  |  | 160,608 |  |  |  | 27,571 |  |  |  | 1,817,191 |
For the year ended as of December 31, 2019
Geographic areas |  | Specialty plant nutrition |  |  | Iodine and derivatives |  |  | Lithium and derivatives |  |  | Potassium |  |  | Industrial chemicals |  |  | Other |  |  | Total ThUS$ |
Chile |  |  | 109,975 |  |  |  | 1,064 |  |  |  | 599 |  |  |  | 27,371 |  |  |  | 39,512 |  |  |  | 33,336 |  |  |  | 211,857 |
Latin America and the Caribbean |  |  | 78,872 |  |  |  | 7,972 |  |  |  | 3,593 |  |  |  | 64,868 |  |  |  | 6,354 |  |  |  | 269 |  |  |  | 161,928 |
Europa |  |  | 149,992 |  |  |  | 123,525 |  |  |  | 76,250 |  |  |  | 27,973 |  |  |  | 15,289 |  |  |  | 735 |  |  |  | 393,764 |
North America |  |  | 243,399 |  |  |  | 90,070 |  |  |  | 45,810 |  |  |  | 43,312 |  |  |  | 27,798 |  |  |  | 883 |  |  |  | 451,272 |
Asia and Others |  |  | 141,682 |  |  |  | 148,389 |  |  |  | 379,462 |  |  |  | 48,627 |  |  |  | 5,922 |  |  |  | 752 |  |  |  | 724,834 |
Total |  |  | 723,920 |  |  |  | 371,020 |  |  |  | 505,714 |  |  |  | 212,151 |  |  |  | 94,875 |  |  |  | 35,975 |  |  |  | 1,943,655 |
Disclosure Of Revenue By Products Text Block [Text Block] |
| (b) | Main product and service lines:
|  | For the period from January to December of the year |
Products and Services |  | 2021 |  |  | 2020 |  |  | 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Specialty plant nutrition |  |  | 908,815 |  |  |  | 701,688 |  |  |  | 723,920 |
- Sodium Nitrates |  |  | 24,829 |  |  |  | 18,291 |  |  |  | 20,679 |
- Potassium nitrate and sodium potassium nitrate |  |  | 539,336 |  |  |  | 424,041 |  |  |  | 457,477 |
- Specialty Blends |  |  | 234,369 |  |  |  | 163,033 |  |  |  | 153,739 |
- Other specialty fertilizers |  |  | 110,281 |  |  |  | 96,323 |  |  |  | 92,025 |
Iodine and derivatives |  |  | 437,931 |  |  |  | 334,657 |  |  |  | 371,020 |
Lithium and derivatives |  |  | 936,121 |  |  |  | 383,373 |  |  |  | 505,714 |
Potassium |  |  | 416,592 |  |  |  | 209,294 |  |  |  | 212,151 |
Industrial chemicals |  |  | 132,011 |  |  |  | 160,608 |  |  |  | 94,875 |
Other |  |  | 30,845 |  |  |  | 27,571 |  |  |  | 35,975 |
- Services |  |  | 3,428 |  |  |  | 3,241 |  |  |  | 3,410 |
- Income from property leases |  |  | 1,531 |  |  |  | 1,457 |  |  |  | 1,438 |
- Income from subleases on right-of-use assets |  |  | 146 |  |  |  | 176 |  |  |  | 261 |
- Commodities |  |  | 12,468 |  |  |  | 11,938 |  |  |  | 16,176 |
- Other ordinary income of Commercial Offices |  |  | 13,272 |  |  |  | 10,759 |  |  |  | 14,690 |
Total |  |  | 2,862,315 |  |  |  | 1,817,191 |  |  |  | 1,943,655 |
Disclosure of cost of sales [text block] |
21.2 | Cost of sales
Cost of sales broken down by nature of expense:
|  | For the period from January to December of the year |
Nature of expense |  | 2021 |  |  | 2020 |  |  | 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Raw materials and consumables used |  |  | (345,356 | ) |  |  | (287,877 | ) |  |  | (271,912 | )
Classes of employee benefit expenses |  |  | (211,771 | ) |  |  | (178,956 | ) |  |  | (178,493 | )
Depreciation expense |  |  | (195,678 | ) |  |  | (182,314 | ) |  |  | (189,587 | )
Depreciation of Right-of-use Assets (contracts under IFRS 16) |  |  | (5,963 | ) |  |  | (5,814 | ) |  |  | (5,450 | )
Amortization expense |  |  | (9,737 | ) |  |  | (12,938 | ) |  |  | (6,015 | )
Investment plan expenses |  |  | (15,059 | ) |  |  | (14,286 | ) |  |  | (18,367 | )
Provision for materials, spare parts and supplies |  |  | (505 | ) |  |  | 640 |  |  |  | (7,500 | )
Contractors |  |  | (157,571 | ) |  |  | (142,017 | ) |  |  | (120,750 | )
Operating leases |  |  | (67,106 | ) |  |  | (57,461 | ) |  |  | (48,499 | )
Mining concessions |  |  | (7,325 | ) |  |  | (6,645 | ) |  |  | (7,856 | )
Operational transportation |  |  | (76,003 | ) |  |  | (68,730 | ) |  |  | (56,376 | )
Freight / product transportation costs |  |  | (77,353 | ) |  |  | (52,156 | ) |  |  | (46,264 | )
Purchase of products from third parties |  |  | (329,464 | ) |  |  | (260,089 | ) |  |  | (268,581 | )
Insurance |  |  | (21,869 | ) |  |  | (17,657 | ) |  |  | (16,968 | )
CORFO rights and other agreements |  |  | (247,604 | ) |  |  | (74,418 | ) |  |  | (143,861 | )
Export costs |  |  | (99,212 | ) |  |  | (88,176 | ) |  |  | (71,056 | )
Expenses related to variable lease payments (contracts under IFRS 16) |  |  | (1,313 | ) |  |  | (1,117 | ) |  |  | (1,037 | )
Variation in gross inventory |  |  | 85,709 |  |  |  | 102,446 |  |  |  | 52,557 |
Variation in inventory provision |  |  | 5,038 |  |  |  | 7,244 |  |  |  | 17,107 |
Other |  |  | 5,934 |  |  |  | 6,000 |  |  |  | 5,305 |
Total |  |  | (1,772,208 | ) |  |  | (1,334,321 | ) |  |  | (1,383,603 | )
Disclosure of detailed information about other income [Text Block] |
| 21.3 | Other income
|  | For the period from January to December of the year |
Other income |  | 2021 |  |  | 2020 |  |  | 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Discounts obtained from suppliers |  |  | 896 |  |  |  | 665 |  |  |  | 676 |
Fines charged to suppliers |  |  | 83 |  |  |  | 267 |  |  |  | 483 |
Taxes recovered |  |  | 287 |  |  |  | 1,487 |  |  |  | 457 |
Amounts recovered from insurance |  |  | 1,811 |  |  |  | 14,861 |  |  |  | 492 |
Overestimate of provisions for third-party obligations |  |  | 293 |  |  |  | 118 |  |  |  | 983 |
Sale of assets classified as properties, plant and equipment |  |  | 1,923 |  |  |  | 1,626 |  |  |  | 2,422 |
Sale of mining rights |  |  | 8,796 |  |  |  | 5,852 |  |  |  | 5,298 |
Easements, pipelines and roads |  |  | 4,949 |  |  |  | 1,619 |  |  |  | 7,204 |
Refunds for mining patents and notarial expenses |  |  | 198 |  |  |  | 85 |  |  |  | 203 |
Others |  |  | 316 |  |  |  | 313 |  |  |  | - |
Total |  |  | 19,552 |  |  |  | 26,893 |  |  |  | 18,218 |
Description of detailed information about employee benefits by nature of expenses [Text Block] |
| 21.4 | Administrative expenses
|  | For the period from January to December of the year |
Administrative expenses |  | 2021 |  |  | 2020 |  |  | 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Employee benefit expenses |  |  | (60,552 | ) |  |  | (55,152 | ) |  |  | (60,255 | )
Marketing costs |  |  | (2,415 | ) |  |  | (2,377 | ) |  |  | (3,911 | )
Amortization expenses |  |  | (118 | ) |  |  | (91 | ) |  |  | (5 | )
Entertainment expenses |  |  | (4,906 | ) |  |  | (4,858 | ) |  |  | (5,783 | )
Advisory services |  |  | (17,332 | ) |  |  | (13,880 | ) |  |  | (13,862 | )
Lease of buildings and facilities |  |  | (3,478 | ) |  |  | (3,111 | ) |  |  | (3,653 | )
Insurance |  |  | (3,901 | ) |  |  | (3,478 | ) |  |  | (2,553 | )
Office expenses |  |  | (6,363 | ) |  |  | (6,204 | ) |  |  | (7,327 | )
Contractors |  |  | (5,106 | ) |  |  | (5,079 | ) |  |  | (4,874 | )
Depreciation of Right-of-use Assets (contracts under IFRS 16) |  |  | (2,743 | ) |  |  | (2,617 | ) |  |  | (2,501 | )
Other expenses |  |  | (11,979 | ) |  |  | (10,170 | ) |  |  | (12,456 | )
Total |  |  | (118,893 | ) |  |  | (107,017 | ) |  |  | (117,180 | )
Disclosure of detailed information about other expenses [Text Block] |
| 21.5 | Other expenses
For the period from January to December of the year |
Other expenses |  | 2021 |  |  | 2020 |  |  | 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Depreciation and amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Depreciation of assets not in use |  |  | - |  |  |  | (138 | ) |  |  | (136 | )
Subtotal |  |  | - |  |  |  | (138 | ) |  |  | (136 | )
Impairment (losses) /reversals of impairment losses recognized in profit for the year |  |  |  |  |  |  |  |  |  |  |  |
Properties, plant and equipment |  |  | (5,582 | ) |  |  | (9,563 | ) |  |  | (49 | )
Intangible assets other than goodwill |  |  | (478 | ) |  |  | (1,941 | ) |  |  | (913 | )
Goodwill |  |  | - |  |  |  | (140 | ) |  |  | (140 | )
Non-current assets and disposal groups held for sale |  |  | - |  |  |  | - |  |  |  | - |
Subtotal |  |  | (6,060 | ) |  |  | (11,644 | ) |  |  | (1,102 | )
Other expenses, by nature |  |  |  |  |  |  |  |  |  |  |  |
Legal expenses |  |  | (42,253 | ) |  |  | (69,965 | ) |  |  | (9,277 | )
VAT and other unrecoverable taxes |  |  | (1,015 | ) |  |  | (626 | ) |  |  | (613 | )
Fines paid |  |  | (882 | ) |  |  | (314 | ) |  |  | (145 | )
Investment plan expenses |  |  | 1 |  |  |  | (768 | ) |  |  | (1,693 | )
Exploration expenses |  |  | - |  |  |  | (5,262 | ) |  |  | (5,537 | )
Contributions and donations |  |  | (9,321 | ) |  |  | (8,793 | ) |  |  | (5,026 | )
Other operating expenses |  |  | (1,075 | ) |  |  | (2,102 | ) |  |  | (2,466 | )
Subtotal |  |  | (54,545 | ) |  |  | (87,830 | ) |  |  | (24,757 | )
Total |  |  | (60,605 | ) |  |  | (99,612 | ) |  |  | (25,995 | )
Disclosure of detailed information about other income expenses [Text Block] |
21.6 | Other (losses) income
|  | For the period from January to December of the year |
Other (losses) income |  | 2021 |  |  | 2020 |  |  | 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Adjustment to prior periods due to applying the equity method |  |  | (198 | ) |  |  | (48 | ) |  |  | (985 | )
Sale of investments in associates |  |  | - |  |  |  | (11,830 | ) |  |  | - |
Impairment of interests in associates |  |  | (2,009 | ) |  |  | 7,235 |  |  |  | 631 |
Sale of investments in joint ventures |  |  | - |  |  |  | (481 | ) |  |  | - |
Others |  |  | (431 | ) |  |  | (189 | ) |  |  | (29 | )
Total |  |  | (2,638 | ) |  |  | (5,313 | ) |  |  | (383 | )
Disclosure of detailed information about impairment reversion of value of financial assets impairment Losses [Text Block] |
| 21.7 | (Impairment) /reversal of value of financial assets impairment losses
|  | For the period from January to December of the year |
Description |  | 2021 |  |  | 2020 |  |  | 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
(Impairment) /reversal of value of financial assets impairment losses (See Note 12.2) |  |  | (235 | ) |  |  | 4,684 |  |  |  | (1,057 | )
Totals |  |  | (235 | ) |  |  | 4,684 |  |  |  | (1,057 | )
Disclosure of detailed information about expenses by nature [Text Block] |
| 21.8 | Summary of expenses by nature
The following summary considers notes 21.2, 21.4 and 21.5
|  | For the period from January to December of the year |
Expenses by nature |  | 2021 |  |  | 2020 |  |  | 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Raw materials and consumables |  |  | (345,356 | ) |  |  | (287,877 | ) |  |  | (271,912 | )
Employee Benefit Expenses |  |  | (272,323 | ) |  |  | (234,108 | ) |  |  | (238,748 | )
Depreciation expense |  |  | (195,678 | ) |  |  | (182,452 | ) |  |  | (189,723 | )
Depreciation of right-of-use Assets |  |  | (8,706 | ) |  |  | (8,431 | ) |  |  | (7,951 | )
Impairment of properties, plant and equipment, intangible and Goodwill |  |  | (6,060 | ) |  |  | (11,644 | ) |  |  | (1,102 | )
Amortization expense |  |  | (9,855 | ) |  |  | (13,029 | ) |  |  | (6,020 | )
Legal expenses |  |  | (42,253 | ) |  |  | (69,965 | ) |  |  | (9,277 | )
Investment plan expenses |  |  | (15,058 | ) |  |  | (15,054 | ) |  |  | (20,060 | )
Exploration expenses |  |  | - |  |  |  | (5,262 | ) |  |  | (5,237 | )
Provision for materials, spare parts and supplies |  |  | (505 | ) |  |  | 640 |  |  |  | (7,500 | )
Contractors |  |  | (162,677 | ) |  |  | (147,096 | ) |  |  | (125,624 | )
Operational leases |  |  | (70,584 | ) |  |  | (60,572 | ) |  |  | (52,152 | )
Mining concessions |  |  | (7,325 | ) |  |  | (6,645 | ) |  |  | (7,856 | )
Operational transportation |  |  | (76,003 | ) |  |  | (68,730 | ) |  |  | (56,376 | )
Freight and product transportation costs |  |  | (77,353 | ) |  |  | (52,156 | ) |  |  | (46,264 | )
Purchase of products from third parties |  |  | (329,464 | ) |  |  | (260,089 | ) |  |  | (268,581 | )
CORFO rights y other agreements |  |  | (247,604 | ) |  |  | (74,418 | ) |  |  | (143,861 | )
Export costs |  |  | (99,212 | ) |  |  | (88,176 | ) |  |  | (71,056 | )
Expenses related to variable lease payments (contracts under IFRS 16) |  |  | (1,313 | ) |  |  | (1,117 | ) |  |  | (1,037 | )
Insurance |  |  | (25,770 | ) |  |  | (21,135 | ) |  |  | (19,521 | )
Consultant and advisor services |  |  | (17,332 | ) |  |  | (13,880 | ) |  |  | (13,862 | )
Variation in gross inventory |  |  | 85,709 |  |  |  | 102,446 |  |  |  | 52,557 |
Variation in inventory provision |  |  | 5,038 |  |  |  | 7,244 |  |  |  | 17,107 |
Other expenses |  |  | (32,022 | ) |  |  | (29,444 | ) |  |  | (32,422 | )
Total expenses by nature |  |  | (1,951,706 | ) |  |  | (1,540,950 | ) |  |  | (1,526,478 | )
Disclosure of interest expense [text block] |
| 21.9 | Finance expenses
|  | For the period from January to December of the year |
Finance expenses |  | 2021 |  |  | 2020 |  |  | 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Interest expense from bank borrowings and overdrafts |  |  | (2,664 | ) |  |  | (2,797 | ) |  |  | (2,133 | )
Interest expense from bonds |  |  | (90,859 | ) |  |  | (87,030 | ) |  |  | (72,984 | )
Interest expense from loans |  |  | (1,135 | ) |  |  | (1,598 | ) |  |  | (2,682 | )
Reversal of capitalized interest expenses |  |  | 14,206 |  |  |  | 8,462 |  |  |  | 7,841 |
Financial expenses for restoration and rehabilitation provisions |  |  | (1,259 | ) |  |  | 2,947 |  |  |  | (4,417 | )
Interest on lease agreement |  |  | (1,587 | ) |  |  | (1,133 | ) |  |  | (1,535 | )
Interest and bank charges |  |  | (1,328 | ) |  |  | (1,050 | ) |  |  | (1,029 | )
Total |  |  | (84,626 | ) |  |  | (82,199 | ) |  |  | (76,939 | )
Disclosure of finance income [text block] |
| 21.10 | Finance income
|  | For the period from January to December of the year |
Finance income |  | 2021 |  |  | 2020 |  |  | 2019 |
|  | ThUS$ |  |  | ThUS$ |  |  | ThUS$ |
Interest from term deposits |  |  | 3,635 |  |  |  | 10,260 |  |  |  | 15,345 |
Interest from marketable securities |  |  | 68 |  |  |  | 2,147 |  |  |  | 6,765 |
Interest from maintenance of minimum bank balance in current account |  |  | 2 |  |  |  | 18 |  |  |  | - |
Other finance income |  |  | 107 |  |  |  | 259 |  |  |  | 4,130 |
Other finance interests |  |  | 856 |  |  |  | 1,031 |  |  |  | 49 |
Total |  |  | 4,668 |  |  |  | 13,715 |  |  |  | 26,289 |

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