XML 197 R174.htm IDEA: XBRL DOCUMENT
v3.19.1

Contingencies and restrictions (Details 3) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Leverage | 1.00 | 0.91

X
- Definition This is a measurement of leverage, calculated as a company's interest-bearing liabilities minus cash or cash equivalents. + References No definition available. + Details
Name: | sqm_Leverage
Namespace Prefix: | sqm_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration