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Basis of presentation for the consolidated financial statements (Tables)

12 Months Ended

Dec. 31, 2019

Disclosure of Basis of presentation for the consolidated financial statements [Abstract]

Disclosure Of Reclassification Of Assets [Text Block]

These revisions were not considered material to the previously issued financial statements.

Items		Original balances ‎reported as of ‎December 31, 2018				Reclassification				Balances reclassified ‎as of December 31, ‎2018
		ThUS$				ThUS$				ThUS$
Trade and other receivables, current			464,855				1,764				466,619
Trade receivables due from related parties, current			44,554				(1,764	)			42,790
Other non-financial assets, current			49,186				(1,214	)			47,972
Intangible assets other than goodwill			188,283				1,067				189,350
Goodwill			34,718				148				34,866
Cost of sales			(1,483,524	)			(2,107	)			(1,485,631	)
Finance costs			(59,914	)			2,107				(57,807	)

Disclosure of subsidiaries [text block]

Companies included in consolidation:

														Ownership interest
										Functional				As of December 31, 2019												As of December 31, 2018
TAX ID No.		Foreign subsidiaries				Country of origin				Currency				Direct				Indirect				Total				Total
Foreign			Nitratos Naturais Do Chile Ltda.				Brazil				US$				0.0000				100.0000				100.0000				100.0000
Foreign			Nitrate Corporation Of Chile Ltd.				United Kingdom				US$				0.0000				100.0000				100.0000				100.0000
Foreign			SQM North America Corp.				USA				US$				40.0000				60.0000				100.0000				100.0000
Foreign			SQM Europe N.V.				Belgium				US$				0.5800				99.4200				100.0000				100.0000
Foreign			Soquimich S.R.L. Argentina				Argentina				US$				0.0000				100.0000				100.0000				100.0000
Foreign			Soquimich European Holding B.V.				Netherlands				US$				0.0000				100,0000				100.0000				100.0000
Foreign			SQM Corporation N.V.				Curacao				US$				0.0002				99.99980				100.0000				100.0000
Foreign			SQI Corporation N.V.				Curacao				US$				0.0159				99.98413				100.0000				100.0000
Foreign			SQM Comercial De México S.A. de C.V.				Mexico				US$				0.0100				99.9900				100.0000				100.0000
Foreign			North American Trading Company				USA				US$				0.0000				100.0000				100.0000				100.0000
Foreign			Administración Y Servicios Santiago S.A. de C.V.				Mexico				US$				0.0000				100.0000				100.0000				100.0000
Foreign			SQM Perú S.A.				Peru				US$				0.0091				99.99093				100.0000				100.0000
Foreign			SQM Ecuador S.A.				Ecuador				US$				0.0040				99.9960				100.0000				100.0000
Foreign			SQM Nitratos México S.A. de C.V.				Mexico				US$				0.0000				100.0000				100.0000				100.0000
Foreign			SQMC Holding Corporation L.L.P.				USA				US$				0.1000				99.9000				100.0000				100.0000
Foreign			SQM Investment Corporation N.V.				Curacao				US$				1.0000				99.0000				100.0000				100.0000
Foreign			SQM Brasil Limitada				Brazil				US$				0.8400				99.1600				100.0000				100.0000
Foreign			SQM France S.A.				France				US$				0.0000				100.0000				100.0000				100.0000
Foreign			SQM Japan Co. Ltd.				Japan				US$				0.1597				99.84030				100.0000				100.0000
Foreign			Royal Seed Trading Corporation A.V.V.				Aruba				US$				1.6700				98.3300				100.0000				100.0000
Foreign			SQM Oceania Pty Limited				Australia				US$				0.0000				100.0000				100.0000				100.0000
Foreign			Rs Agro-Chemical Trading A.V.V.				Aruba				US$				98.3333				1.666700				100.0000				100.0000
Foreign			SQM Colombia SAS				Colombia				US$				0.0000				100.0000				100.0000				100.0000
Foreign			SQM Australia PTY				Australia				US$				0.0000				100.0000				100.0000				100.0000
Foreign			SACAL S.A. (1)				Argentina				ARS				0.0000				0.0000				0.0000				100.0000
Foreign			SQM Indonesia S.A.				Indonesia				US$				0.0000				80.0000				80.0000				80.0000
Foreign			SQM Virginia L.L.C.				USA				US$				0.0000				100.0000				100.0000				100.0000
Foreign			SQM Italia SRL				Italy				US$				0.0000				100.0000				100.0000				100.0000
Foreign			Comercial Caimán Internacional S.A.				Panama				US$				0.0000				100.0000				100.0000				100.0000
Foreign			SQM Africa Pty.				South Africa				US$				0.0000				100.0000				100.0000				100.0000
Foreign			SQM Lithium Specialties LLC				USA				US$				0.0000				100.0000				100.0000				100.0000
Foreign			SQM Iberian S.A.				Spain				US$				0.0000				100.0000				100.0000				100.0000
Foreign			SQM Beijing Commercial Co. Ltd.				China				US$				0.0000				100.0000				100.0000				100.0000
Foreign			SQM Thailand Limited.				Thailand				US$				0.0000				99.99600				99.9960				99.9960
Foreign			SQM International N.V.				Belgium				US$				0.5800				99.4200				100.0000				100.0000
Foreign			SQM (Shanghai) Chemicals Co. Ltd.				China				US$				0.0000				100.0000				100.0000				100.0000
96.801.610-5			Comercial Hydro S.A.				Chile				US$				0.0000				60.6383				60.6383				60.6383
96.651.060-9			SQM Potasio S.A.				Chile				US$				99.9999				0.0000				99.9999				99.9999
96.592.190-7			SQM Nitratos S.A.				Chile				US$				99.9999				0.0001				100.0000				100.0000
96.592.180-K			Ajay SQM Chile S.A.				Chile				US$				51.0000				0.0000				51.0000				51.0000
86.630.200-6			SQMC Internacional Ltda. (2)				Chile				Ch$				0.0000				0.0000				0.0000				60.6381
79.947.100-0			SQM Industrial S.A.				Chile				US$				99.0470				0.9530				100.0000				100.0000
79.906.120-1			Isapre Norte Grande Ltda.				Chile				Ch$				1.0000				99.0000				100.0000				100.0000
79.876.080-7			Almacenes y Depósitos Ltda.				Chile				Ch$				1.0000				99.0000				100.0000				100.0000
79.770.780-5			Servicios Integrales de Tránsitos y Transferencias S.A.				Chile				US$				0.0003				99.9997				100.0000				100.0000
79.768.170-9			Soquimich Comercial S.A.				Chile				US$				0.0000				60.6383				60.6383				60.6383
79.626.800-K			SQM Salar S.A.				Chile				US$				18.1800				81.8200				100.0000				100.0000
78.053.910-0			Proinsa Ltda. (3)				Chile				Ch$				0.0000				0.0000				0.0000				60.5800
76.534.490-5			Sociedad Prestadora de Servicios de Salud Cruz del Norte S.A.				Chile				Ch$				0.0000				100.0000				100.0000				100.0000
76.425.380-9			Exploraciones Mineras S.A.				Chile				US$				0.2691				99.7309				100.0000				100.0000
76.064.419-6			Comercial Agrorama Ltda. (4)				Chile				Ch$				0.0000				42.4468				42.4468				42.4468
76.145.229-0			Agrorama S.A.				Chile				Ch$				0.0000				60.6387				60.6387				60.6387
76.359.919-1			Orcoma Estudios SPA				Chile				US$				51.0000				0.0000				51.0000				51.0000
76.360.575-2			Orcoma SPA				Chile				US$				100.0000				0.0000				100.0000				100.0000
76.686.311-9			SQM MaG SpA				Chile				US$				0.0000				100.0000				100.0000				100.0000

1) On June 26, 2019, SACAL was liquidated.

2) On March 01, 2019, SQMC Internacional merged with Soquimich Comercial S.A.

3) On April 01, 2019, Proinsa Ltda was liquidated.

4) Comercial Agrorama Ltda was consolidated as it is controlled through the subsidiary Soquimich Comercial S.A.

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