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v3.20.4

COMMITMENTS AND CONTINGENCIES (Details) | 12 Months Ended
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Dec. 31, 2020 location
Environmental matters |
Number of locations for environmental assessments and remediation | 30

X
- Definition Represents the number of locations for environmental assessments and remediation. + References No definition available. + Details
Name: | ecl_NumberOfLocationsForEnvironmentalAssessmentsAndRemediation
Namespace Prefix: | ecl_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccrualForEnvironmentalLossContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration