Disclosures on reserves in Equity (Tables)

12 Months Ended

Dec. 31, 2020

Disclosure of detailed information about controls capital management [Abstract]

Disclosure of detailed information about controls capital management [Text Block]

Capital Management	As of December 31, 2020			As of December 31, 2019			Description (1)	Calculation (1)
Net Financial Debt (ThUS$)		1,074,020			681,912		Financial Debt – Financial Resources	Other current Financial Liabilities + Other Non-Current Financial Liabilities– Cash and Cash Equivalents – Other Current Financial Assets – Hedging Assets, non-current
Liquidity		5.40			3.45		Current Assets divided by Current Liabilities	Total Current Assets / Total Current Liabilities
ROE		7.79	%		13.15	%	Profit for the year divided by Total Equity	LTM(2) Profit for the year / Equity
Adjusted EBITDA (ThUS$)		579,765			644,223		Adjusted EBITDA	Profit for the year + Depreciation and Amortization Expenses + Finance Costs + Income Tax – Other income and Share of profit of associates and joint ventures + Other expenses – Finance income – Currency differences
EBITDA (ThUS$)		524,650			668,912		EBITDA	Profit for the year + Depreciation and Amortization Expenses + Finance Costs + Income Tax
ROA		9.83	%		12.76	%	Adjusted EBITDA – Depreciation divided by Total Assets net of financial resources less related parties’ investments	(LTM Gross Profit – Administrative Expenses)/ (Total Assets – Cash and Cash Equivalents – Other Current Financial Assets – Other Non-Current Financial Assets – Equity-accounted Investments)
Indebtedness		0.50			0.32		Total Liabilities on Equity	Total Liabilities / Total Equity

Disclosure of classes of share capital [text block]

Detail of capital classes in shares:

As of December 31, 2020, and December 31, 2019, the Company has not placed any new shares issues on the market

Type of capital in preferred shares	As of December 31, 2020				As of December 31, 2019
	Series A		Series B		Series A		Series B
Description of type of capital in shares
Number of authorized shares		142,819,552		120,376,972		142,819,552		120,376,972
Number of fully subscribed and paid shares		142,819,552		120,376,972		142,819,552		120,376,972
Number of subscribed, partially paid shares		-		-		-		-
Par value of shares in US$		0.9435		2.8464		0.9435		2.8464
Increase (decrease) in the number of current shares		-		-		-		-
Number of current shares		142,819,552		120,376,972		142,819,552		120,376,972
Number of shares owned by the entity or its subsidiaries or associates		-		-		-		-
Number of shares whose issuance is reserved due to the existence of options or agreements to dispose shares		-		-		-		-
Capital amount in shares ThUS$		134,750		342,636		134,750		342,636
Amount of premium issuance ThUS$		-		-		-		-
Amount of reserves ThUS$		-		-		-		-
Total number of subscribed shares		142,819,552		120,376,972		142,819,552		120,376,972

20.3 Disclosures on reserves in Equity

As of December 31, 2020, and December 31, 2019, this caption comprises the following:

Disclosures on reserves in equity	As of December 31, 2020			As of December 31, 2019			As of December 31, 2018
	ThUS$			ThUS$			ThUS$
Reserve for currency exchange conversion (1)		(11,569	)		(25,745	)		(26,307	)
Reserve for cash flow hedges (2)		4,491			7,196			7,971
Reserve for gains and losses from financial assets measured at fair value through other comprehensive income (3)		6,872			(270	)		(1,111	)
Reserve for actuarial gains or losses in defined benefit plans (4)		(8,680	)		(9,490	)		(6,884	)
Other reserves		16,318			14,086			11,332
Total		7,432			(14,223	)		(14,999	)

Disclosure of detailed information about movement in other reserves [Text Block]

Movements in other reserves and changes in interest were as follows:

	Foreign currency translation difference			Reserve for cash flow hedges						Reserve for actuarial gains and losses from defined benefit plans						Reserve for gains (losses) from financial assets measured at fair value through other comprehensive income						Other reserves			Total reserves
	Before			Before						Before			Deferred			Before			Deferred			Before						Deferred			Total
Movements	taxes			taxes			Tax			taxes			taxes			taxes			taxes			taxes			Reserves			Taxes			reserves
	ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$
Opening balance as of January 1, 2018		(24,913	)		2,248			-			(6,847	)		894			4,787			(1,850	)		11,332			(13,393	)		(956	)		(14,349	)
Increase		6,542			14,794			-			674			(133	)		294			(79	)		-			22,304			(212	)		22,092
Decrease		(7,936	)		(9,071	)		-			(2,003	)		531			(5,841	)		1,578			-			(24,851	)		2,109			(22,742	)
Closing balance as of December 31, 2018		(26,307	)		7,971			-			(8,176	)		1,292			(760	)		(351	)		11,332			(15,940	)		941			(14,999	)
Increase		1,824			8,628			(2,683	)		-			-			1,570			(424	)		3,093			15,115			(3,107	)		12,008
Decrease		(1,262	)		(6,720	)		-			(3,306	)		700			(418	)		113			(339	)		(12,045	)		813			(11,232	)
Closing balance as of December 31, 2019		(25,745	)		9,879			(2,683	)		(11,482	)		1,992			392			(662	)		14,086			(12,870	)		(1,353	)		(14,223	)
Increase		15,732			-			-			3,858			430			11,885			(3,180	)		2,121			33,596			(2,750	)		30,846
Decrease		(1,556	)		(3,706	)		1,001			(2,903	)		(575	)		(2,101	)		538			111			(10,155	)		964			(9,191	)
Closing balance as of December 31, 2020		(11,569	)		6,173			(1,682	)		(10,527	)		1,847			10,176			(3,304	)		16,318			10,571			(3,139	)		7,432

Disclosure of detailed information about legal reserves reported in the individual financial statements of the subsidiaries [Text Block]

Subsidiary – Associate	As of December 31, 2020			As of December 31, 2019			As of December 31, 2018
	ThUS$			ThUS$			ThUS$
SQM Iberian S.A.		9,464			9,464			9,464
SQM Europe NV		1,957			1,957			1,957
Soquimich European holding B.V.		828			828			828
Abu Dhabi Fertilizer Industries WWL		455			455			455
Doktor Tarsa Tarim Sanayi AS		-			305			305
Kore Potash PLC		3,170			2,754			-
Total		15,874			15,763			13,009
Other derivative reserves of the acquisition of subsidiaries, which was already under Company ownership at the acquisition date (IAS 27R)
SQM Iberian S.A.		(1,677	)		(1,677	)		(1,677	)
Orcoma Estudios SPA		2,121			-			-
Total Other reserves		16,318			14,086			11,332

Disclosure of dividends [text block]

Dividends discounted from equity from January to December 2020 and 2019 were the following:

Dividends	December 31, 2020		December 31, 2019		December 31, 2018
	ThUS$		ThUS$		ThUS$
Ajay SQM Chile S.A. Dividends		556		882		823
Ajay SQM Chile S.A Payable Dividend		682		-		-
Soquimich Comercial S.A. Potential Dividend		5,904		3,936		7,872
Soquimich Comercial S.A. Payable Dividend		2,976		1,999		1,038
Non-controlling interests		10,118		6,817		9,733
Interim dividend		44,986		211,224		331,199
Potential dividend		100,000		-		100,000
Dividends payable		4,369		66,891		108,631
Owners of the Parent		149,355		278,115		539,830
Dividends discounted from equity for the period		159,473		284,932		549,563