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ACQUISITIONS (Details) - item	3 Months Ended
ACQUISITIONS (Details) - item	Mar. 31, 2025	Mar. 31, 2024
ACQUISITIONS
Number of acquisitions	0	0

Total number of acquisitions during the period.

No definition available.

Name:	ecl_NumberOfAcquisitions
Namespace Prefix:	ecl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

No definition available.

Name:	us-gaap_BusinessCombinationsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration