FAIR VALUE - Narrative (Details) $ in Thousands	12 Months Ended
Dec. 31, 2022 USD ($)
FAIR VALUE.
Transfers between fair value levels for assets and liabilities	$ 0

Represents the amount transferred between all fair value levels for assets or liabilities.

No definition available.

Name:	leco_FairValueTransfersBetweenLevelsAssetsOrLiabilities
Namespace Prefix:	leco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration