Equity-accounted investees (Tables)

12 Months Ended

Dec. 31, 2021

Disclosure Of Equity-accounted investees [Abstract]

Disclosure of associates [text block]

	Equity-accounted investees						Share in profit (loss) of associates    accounted for using the equity method								Share in other comprehensive income of associates accounted for using the equity method								Share in total comprehensive income of associates accounted for using the equity method
Associate	As of December 31, 2021		As of December 31, 2020		As of  December 31, 2019		Fort the year  ended December 31, 2021		Fort the year ended December 31, 2020			Fort the year ended December 31, 2019			Fort the year ended December 31, 2021		Fort the year ended December 31, 2020			Fort the year ended December 31, 2019			Fort the year ended December 31, 2021		Fort the year ended December 31, 2020			Fort the year ended December 31, 2019
	ThUS$		ThUS$		ThUS$		ThUS$		ThUS$			ThUS$			ThUS$		ThUS$			ThUS$			ThUS$		ThUS$			ThUS$
Abu Dhabi Fertilizer Industries WWL		-		11,505		11,609		-		(156	)		634			-		-			1			-		(156	)		635
Doktor Tarsa Tarim Sanayi AS (*)		-		-		26,001		-		4,031			3,912			-		-			198			-		4,031			4,110
Ajay North America		15,899		14,468		14,669		2,802		2,191			2,871			-		-			-			2,802		2,191			2,871
Ajay Europe SARL		8,213		7,875		7,451		1,852		1,029			1,165			360		756			(179	)		2,212		1,785			986
SQM Eastmed Turkey (*)		-		-		623		-		247			354			-		-			(42	)		-		247			312
Kore Potash PLC (**)		-		26,175		24,739		-		(224	)		(534	)		-		(374	)		(549	)		-		(598	)		(1,083	)
Total		24,112		60,023		85,092		4,654		7,118			8,402			360		382			(571	)		5,014		7,500			7,831

(*) These investments were disposed of in 2020

(**) For more details, see Note 7.3 (a).

Disclosure of interests in associates [text block]

							Dividends received for the year ending
Associate	Description of the nature of the relationship	Address	Country of incorporation	Share of  ownership in associates			December 31, 2021		December 31, 2020		December 31, 2019
							ThUS$		ThUS$		ThUS$
Abu Dhabi Fertilizer Industries WWL	Distribution and commercialization of specialty plant nutrients in the Middle East.	PO Box 71871, Abu Dhabi	United Arab Emirates		37	%		9,438		-		-
Ajay North America	Production and distribution of iodine and iodine derivatives.	1400 Industry RD Power Springs GA 30129	United States of North America		49	%		1,233		1,967		2,796
Ajay Europe SARL	Production and distribution of iodine and iodine derivatives.	Z.I. du Grand Verger BP 227 53602 Evron Cedex	France		50	%		992		1,197		1,055
Kore Potash Ltd	Prospecting, exploration and mining development	L 3 88 William ST Perth, was 6000	United Kingdom		14.65	%		-		-		-
Doktor Tarsa Tarim Sanayi AS	Distribution and commercialization of specialty plant nutrients in the Turkey.	Organize Sanayi Bolgesi, Ikinci Kisim, 22 cadde TR07100 Antalya	Turkey		50	%
SQM Eastmed Turkey	Production and trading of specialty products.	Organize Sanayi Bolgesi, Ikinci Kisim, 22 cadde TR07100 Antalya	Turkey		50	%		-		-		-
Total								11,663		3,164		3,851

Disclosure of Detailed Informatin on Summarized Financial Information of Associates Explanatory [Text Block]

	As of December 31, 2021								For the year ended as of December 31, 2021
	Assets				Liabilities								Other
Associate	Current		Non-current		Current		Non-current		Revenue		Net gain (loss)		comprehensive  income			Comprehensive income
	ThUS$		ThUS$		ThUS$		ThUS$		ThUS$		ThUS$		ThUS$			ThUS$
Ajay North America		21,771		15,096		4,421		-		47,375		5,718		-			5,718
Ajay Europe SARL		25,927		1,241		10,742		-		48,409		3,705		(34	)		3,671
Total		47,698		16,337		15,163		-		95,784		9,423		(34	)		9,389

	As of December 31, 2020								For the year ended as of December 31, 2020
	Assets				Liabilities									Other
Associate	Current		Non-current		Current		Non-current		Revenue		Net gain (loss)			comprehensive income		Comprehensive income
	ThUS$		ThUS$		ThUS$		ThUS$		ThUS$		ThUS$			ThUS$		ThUS$
Abu Dhabi Fertilizer Industries WWL		29,313		8,586		6,706		101		6,641		(420	)		-		(420	)
Ajay North America		18,513		15,749		4,737		-		42,920		4,471			-		4,471
Ajay Europe SARL		22,032		1,493		7,773		-		41,950		2,058			1,736		3,794
Kore Potash PLC		5,691		124,112		786		-		-		(3,233	)		486		(2,747	)
Total		75,549		149,940		20,002		101		91,511		2,876			2,222		5,098

	As of December 31, 2019								For the year ended as of December 31, 2019
	Assets				Liabilities									Other
Associate	Current		Non-current		Current		Non-current		Revenue		Net gain (loss)			comprehensive income			Comprehensive income
	ThUS$		ThUS$		ThUS$		ThUS$		ThUS$		ThUS$			ThUS$			ThUS$
Abu Dhabi Fertilizer Industries WWL		28,543		9,971		7,133		-		31,588		1,713			4			1,717
Doktor Tarsa Tarim Sanayi AS		97,797		15,196		22,420		38,522		93,768		7,824			396			8,220
Ajay North America		19,748		13,250		3,061		-		38,833		5,860			-			5,860
Ajay Europe SARL		19,589		1,456		6,144		-		35,709		2,329			(358	)		1,971
SQM Eastmed Turkey		2,718		1,833		2,600		704		3,086		709			(84	)		625
Kore Potash PLC		7,938		119,362		2,214		-		-		(2,716	)		(2,791	)		(5,507	)
Total		176,333		161,068		43,572		39,226		202,984		15,719			(2,833	)		12,886