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Financial instruments (Details 15) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Oct. 31, 2018
Financial instruments [Line Items] |  |  |
Company | SQM S.A. |  |
Notional Amount | $ 39,031 | $ 282,914 |
Borrowing costs | $ (2,250) | $ (2,336) |
Single series bond One [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID | 93.007.000-9 | 93.007.000-9 |
Company | SQM S.A. | SQM S.A. |
Country | Chile | Chile |
Number of registration or ID of the instrument | - | - |
Maturity date | 01/28/2021 | 04/21/2020 |
Currency or adjustment index | US$ | US$ |
Payment of interest | Semiannual | Semiannual |
Repayment | Upon maturity | Upon maturity |
Effective rate | 1.95% | 0.43% |
Nominal rate | 4.38% | 5.50% |
Notional Amount | $ 4,648 | $ 252,674 |
Borrowing costs | $ (433) | $ (386) |
Single series bond Two [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID | 93.007.000-9 | 93.007.000-9 |
Company | SQM S.A. | SQM S.A. |
Country | Chile | Chile |
Number of registration or ID of the instrument | - | - |
Maturity date | 04/03/2021 | 01/28/2020 |
Currency or adjustment index | US$ | US$ |
Payment of interest | Semiannual | Semiannual |
Repayment | Upon maturity | Upon maturity |
Effective rate | 1.08% | 2.35% |
Nominal rate | 3.63% | 4.38% |
Notional Amount | $ 2,658 | $ 4,648 |
Borrowing costs | $ (614) | $ (433) |
Single series bond Three [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID | 93.007.000-9 | 93.007.000-9 |
Company | SQM S.A. | SQM S.A. |
Country | Chile | Chile |
Number of registration or ID of the instrument | - | - |
Maturity date | 05/07/2021 | 04/03/2020 |
Currency or adjustment index | US$ | US$ |
Payment of interest | Semiannual | Semiannual |
Repayment | Upon maturity | Upon maturity |
Effective rate | 3.59% | 1.42% |
Nominal rate | 4.25% | 3.63% |
Notional Amount | $ 7,508 | $ 2,658 |
Borrowing costs | $ (679) | $ (614) |
Single series bond Four [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID | 93.007.000-9 | 93.007.000-9 |
Company | SQM S.A. | SQM S.A. |
Country | Chile | Chile |
Number of registration or ID of the instrument | - | - |
Maturity date | 01/22/2021 | 05/07/2020 |
Currency or adjustment index | US$ | US$ |
Payment of interest | Semiannual | Semiannual |
Repayment | Upon maturity | Upon maturity |
Effective rate | 4.17% | 4.07% |
Nominal rate | 4.25% | 4.25% |
Notional Amount | $ 2,869 | $ 2,869 |
Borrowing costs | $ (237) | $ (679) |
Series H bonds [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID | 93.007.000-9 | 93.007.000-9 |
Company | SQM S.A. | SQM S.A. |
Country | Chile | Chile |
Number of registration or ID of the instrument | 564 | 564 |
Maturity date | 01/05/2021 | 01/05/2020 |
Currency or adjustment index | UF | UF |
Payment of interest | Semiannual | Semiannual |
Repayment | Semiannual | Semiannual |
Effective rate | 0.58% | 1.36% |
Nominal rate | 4.90% | 4.90% |
Notional Amount | $ 18,212 | $ 17,166 |
Borrowing costs | $ (172) | $ (139) |
Series O bonds [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID | 93.007.000-9 | 93.007.000-9 |
Company | SQM S.A. | SQM S.A. |
Country | Chile | Chile |
Number of registration or ID of the instrument | 699 | 699 |
Maturity date | 02/01/2021 | 02/01/2020 |
Currency or adjustment index | UF | UF |
Payment of interest | Semiannual | Semiannual |
Repayment | Upon maturity | Upon maturity |
Effective rate | 2.24% | 2.41% |
Nominal rate | 3.80% | 3.80% |
Notional Amount | $ 962 | $ 890 |
Borrowing costs | $ (82) | $ (67) |
Series Q bonds [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID | 93.007.000-9 | 93.007.000-9 |
Company | SQM S.A. | SQM S.A. |
Country | Chile | Chile |
Number of registration or ID of the instrument | 700 | 700 |
Maturity date | 06/01/2021 | 06/01/2020 |
Currency or adjustment index | UF | UF |
Payment of interest | Semiannual | Semiannual |
Repayment | Upon maturity | Upon maturity |
Effective rate | 2.92% | 3.11% | 3.45%
Nominal rate | 3.45% | 3.45% |
Notional Amount | $ 350 | $ 323 |
Borrowing costs | (21) | (6) |
Non current bonds issued [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 1,833,056 | 1,414,192 |
Non-current maturities | 1,833,056 | 1,414,192 |
Borrowing costs | (16,430) | (11,084) |
Total | 1,816,626 | 1,403,108 |
Non current bonds issued [Member] | Over 1 year to 2 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 13,749 |
Non-current maturities | 0 | 13,749 |
Non current bonds issued [Member] | Over 2 years to 3 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 300,000 | 13,749 |
Non-current maturities | 300,000 | 13,749 |
Non current bonds issued [Member] | Over 3 years to 4 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 313,749 |
Non-current maturities | 0 | 313,749 |
Non current bonds issued [Member] | Over 4 Years to 5 [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 250,000 | 13,749 |
Non-current maturities | 250,000 | 13,749 |
Non current bonds issued [Member] | Over 5 Years [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 1,283,056 | 1,059,196 |
Non-current maturities | $ 1,283,056 | $ 1,059,196 |
Non current bonds issued [Member] | Single series bond One [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID | 93.007.000-9 | 93.007.000-9 |
Company | SQM S.A. | SQM S.A. |
Country | Chile | Chile |
Number of registration or ID of the instrument | - | - |
Maturity date | 01/28/2025 | 01/28/2025 |
Currency or adjustment index | US$ | US$ |
Payment of interest | Semiannual | Semiannual |
Repayment | Upon maturity | Upon maturity |
Effective rate | 4.08% | 4.08% |
Nominal rate | 4.38% | 4.38% |
Notional Amount | $ 250,000 | $ 250,000 |
Non-current maturities | 250,000 | 250,000 |
Borrowing costs | (1,336) | (1,514) |
Total | 248,664 | 248,486 |
Non current bonds issued [Member] | Single series bond One [Member] | Over 1 year to 2 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Single series bond One [Member] | Over 2 years to 3 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Single series bond One [Member] | Over 3 years to 4 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Single series bond One [Member] | Over 4 Years to 5 [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 250,000 | 0 |
Non-current maturities | 250,000 | 0 |
Non current bonds issued [Member] | Single series bond One [Member] | Over 5 Years [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 250,000 |
Non-current maturities | $ 0 | $ 250,000 |
Non current bonds issued [Member] | Single series bond Two [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID |  | 93.007.000-9 |
Company | SQM S.A. | SQM S.A. |
Country | Chile | Chile |
Number of registration or ID of the instrument | - | - |
Maturity date | 04/03/2023 | 04/03/2023 |
Currency or adjustment index | US$ | US$ |
Payment of interest | Semiannual | Semiannual |
Repayment | Upon maturity | Upon maturity |
Effective rate | 3.43% | 3.43% |
Nominal rate | 3.63% | 3.63% |
Notional Amount | $ 300,000 | $ 300,000 |
Non-current maturities | 300,000 | 300,000 |
Borrowing costs | (781) | (1,393) |
Total | 299,219 | 298,607 |
Non current bonds issued [Member] | Single series bond Two [Member] | Over 1 year to 2 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Single series bond Two [Member] | Over 2 years to 3 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 300,000 | 0 |
Non-current maturities | 300,000 | 0 |
Non current bonds issued [Member] | Single series bond Two [Member] | Over 3 years to 4 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 300,000 |
Non-current maturities | 0 | 300,000 |
Non current bonds issued [Member] | Single series bond Two [Member] | Over 4 Years to 5 [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Single series bond Two [Member] | Over 5 Years [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | $ 0 | $ 0 |
Non current bonds issued [Member] | Single series bond Three [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID |  | 93.007.000-9 |
Company | SQM S.A. | SQM S.A. |
Country | Chile | Chile |
Number of registration or ID of the instrument | - | - |
Maturity date | 05/07/2029 | 05/07/2029 |
Currency or adjustment index | US$ | US$ |
Payment of interest | Semiannual | Semiannual |
Repayment | Upon maturity | Upon maturity |
Effective rate | 4.18% | 4.19% |
Nominal rate | 4.25% | 4.25% |
Notional Amount | $ 450,000 | $ 450,000 |
Non-current maturities | 450,000 | 450,000 |
Borrowing costs | (5,020) | (5,923) |
Total | 444,980 | 444,077 |
Non current bonds issued [Member] | Single series bond Three [Member] | Over 1 year to 2 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Single series bond Three [Member] | Over 2 years to 3 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Single series bond Three [Member] | Over 3 years to 4 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Single series bond Three [Member] | Over 4 Years to 5 [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Single series bond Three [Member] | Over 5 Years [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 450,000 | 450,000 |
Non-current maturities | $ 450,000 | $ 450,000 |
Non current bonds issued [Member] | Single series bond Four [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID | 93.007.000-9 |  |
Company | SQM S.A. |  |
Country | Chile |  |
Number of registration or ID of the instrument | - |  |
Maturity date | 01/22/2050 |  |
Currency or adjustment index | US$ |  |
Payment of interest | Semiannual |  |
Repayment | Upon maturity |  |
Effective rate | 4.22% |  |
Nominal rate | 4.25% |  |
Notional Amount | $ 400,000 |  |
Non-current maturities | 400,000 |  |
Borrowing costs | (6,582) |  |
Total | 393,418 |  |
Non current bonds issued [Member] | Single series bond Four [Member] | Over 1 year to 2 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 |  |
Non-current maturities | 0 |  |
Non current bonds issued [Member] | Single series bond Four [Member] | Over 2 years to 3 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 |  |
Non-current maturities | 0 |  |
Non current bonds issued [Member] | Single series bond Four [Member] | Over 3 years to 4 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 |  |
Non-current maturities | 0 |  |
Non current bonds issued [Member] | Single series bond Four [Member] | Over 4 Years to 5 [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 |  |
Non-current maturities | 0 |  |
Non current bonds issued [Member] | Single series bond Four [Member] | Over 5 Years [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 400,000 |  |
Non-current maturities | $ 400,000 |  |
Non current bonds issued [Member] | Series H bonds [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID | 93.007.000-9 | 93.007.000-9 |
Company | SQM S.A. | SQM S.A. |
Country | Chile | Chile |
Number of registration or ID of the instrument | 564 | 564 |
Maturity date | 01/05/2030 | 01/05/2030 |
Currency or adjustment index | UF | UF |
Payment of interest | Semiannual | Semiannual |
Repayment |  | Semiannual |
Effective rate | 4.76% | 4.78% |
Nominal rate | 4.90% | 4.90% |
Notional Amount | $ 126,386 | $ 130,617 |
Non-current maturities | 126,386 | 130,617 |
Borrowing costs | (1,378) | (1,253) |
Total | 125,008 | 129,364 |
Non current bonds issued [Member] | Series H bonds [Member] | Over 1 year to 2 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 13,749 |
Non-current maturities | 0 | 13,749 |
Non current bonds issued [Member] | Series H bonds [Member] | Over 2 years to 3 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 13,749 |
Non-current maturities | 0 | 13,749 |
Non current bonds issued [Member] | Series H bonds [Member] | Over 3 years to 4 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 13,749 |
Non-current maturities | 0 | 13,749 |
Non current bonds issued [Member] | Series H bonds [Member] | Over 4 Years to 5 [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 13,749 |
Non-current maturities | 0 | 13,749 |
Non current bonds issued [Member] | Series H bonds [Member] | Over 5 Years [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 126,386 | 75,621 |
Non-current maturities | $ 126,386 | $ 75,621 |
Non current bonds issued [Member] | Series O bonds [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID | 93.007.000-9 | 93.007.000-9 |
Company | SQM S.A. | SQM S.A. |
Country | Chile | Chile |
Number of registration or ID of the instrument | 699 | 699 |
Maturity date | 02/01/2033 | 02/01/2033 |
Currency or adjustment index | UF | UF |
Payment of interest | Semiannual | Semiannual |
Repayment | Upon maturity | Upon maturity |
Effective rate | 3.68% | 3.70% |
Nominal rate | 3.80% | 5.50% |
Notional Amount | $ 61,334 | $ 56,715 |
Non-current maturities | 61,334 | 56,715 |
Borrowing costs | (904) | (811) |
Total | 60,430 | 55,904 |
Non current bonds issued [Member] | Series O bonds [Member] | Over 1 year to 2 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Series O bonds [Member] | Over 2 years to 3 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Series O bonds [Member] | Over 3 years to 4 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Series O bonds [Member] | Over 4 Years to 5 [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Series O bonds [Member] | Over 5 Years [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 61,334 | 56,715 |
Non-current maturities | $ 61,334 | $ 56,715 |
Non current bonds issued [Member] | Series P Bonds [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID | 93.007.000-9 | 93.007.000-9 |
Company | SQM S.A. | SQM S.A. |
Country | Chile | Chile |
Number of registration or ID of the instrument | 563 | 563 |
Maturity date | 01/15/2028 | 01/15/2028 |
Currency or adjustment index | UF | UF |
Payment of interest | Semiannual | Semiannual |
Repayment | Upon maturity | Upon maturity |
Effective rate | 3.24% | 3.24% |
Nominal rate | 3.25% | 3.25% |
Notional Amount | $ 122,668 | $ 113,430 |
Non-current maturities | 122,668 | 113,430 |
Borrowing costs | (77) | (89) |
Total | 122,591 | 113,341 |
Non current bonds issued [Member] | Series P Bonds [Member] | Over 1 year to 2 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Series P Bonds [Member] | Over 2 years to 3 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Series P Bonds [Member] | Over 3 years to 4 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Series P Bonds [Member] | Over 4 Years to 5 [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Series P Bonds [Member] | Over 5 Years [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 122,668 | 113,430 |
Non-current maturities | $ 122,668 | $ 113,430 |
Non current bonds issued [Member] | Series Q bonds [Member] |  |  |
Financial instruments [Line Items] |  |  |
Tax ID | 93.007.000-9 | 93.007.000-9 |
Company | SQM S.A. | SQM S.A. |
Country | Chile | Chile |
Number of registration or ID of the instrument | 700 | 700 |
Maturity date | 06/01/2038 | 06/01/2038 |
Currency or adjustment index | UF | UF |
Payment of interest | Semiannual | Semiannual |
Repayment | Upon maturity | Upon maturity |
Effective rate | 3.43% | 3.45% |
Nominal rate | 3.45% | 3.45% |
Notional Amount | $ 122,668 | $ 113,430 |
Non-current maturities | 122,668 | 113,430 |
Borrowing costs | (352) | (101) |
Total | 122,316 | 113,329 |
Non current bonds issued [Member] | Series Q bonds [Member] | Over 1 year to 2 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Series Q bonds [Member] | Over 2 years to 3 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Series Q bonds [Member] | Over 3 years to 4 [member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Series Q bonds [Member] | Over 4 Years to 5 [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 0 | 0 |
Non-current maturities | 0 | 0 |
Non current bonds issued [Member] | Series Q bonds [Member] | Over 5 Years [Member] |  |  |
Financial instruments [Line Items] |  |  |
Notional Amount | 122,668 | 113,430 |
Non-current maturities | $ 122,668 | $ 113,430 |

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- Definition The nominal or face amount of a financial instrument, used to calculate payments made on that instrument. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | na
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- Definition The nominal interest rate on borrowings. + References No definition available. + Details
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Namespace Prefix: | sqm_
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Balance Type: | na
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- Definition The description of identification of the instrument. + References No definition available. + Details
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- Definition The description about repayment of borrowings. + References No definition available. + Details
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Balance Type: | na
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- Definition Description Of Tax ID + References No definition available. + Details
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Balance Type: | na
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- Definition The description of type of payment of interest. + References No definition available. + Details
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Namespace Prefix: | sqm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | sqm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of non current bonds issued after deducting issuance costs. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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