Document and Entity Information [Abstract] Document Information [Table] Legal Entity [Axis] Entity [Domain] Represents the Retirement Plan number 005. E B P 005 [Member] The Lincoln Electric Company Employee Savings Plan Document Information [Line Items] Document Type Entity Registrant Name Entity Central Index Key Amendment Flag Statements of Net Assets Available for Benefits EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] Statements of Net Assets Available for Benefits EBP, Asset [Abstract] Assets EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value Investments at fair value Fair value of shares EBP, Receivable [Abstract] Receivables: EBP, Note Receivable from Participant Notes receivable from participants EBP, Employer Contribution, Receivable Employer contributions receivable EBP, Receivable Total receivables EBP, Asset Total assets EBP, Net Asset Available for Benefit Net assets available for benefits at end of year Net assets available for benefits at beginning of year Net assets available for benefits Statement of Changes in Net Assets Available for Benefits EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] Statement of Changes in Net Assets Available for Benefits EBP, Change in Net Asset Available for Benefit, Increase [Abstract] Additions EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment Interest and dividends EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Interest on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution Participants EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash Employer EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment Net appreciation in fair value of investments EBP, Change in Net Asset Available for Benefit, Increase Total additions EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Deductions EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Participant withdrawals EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Administrative expenses EBP, Change in Net Asset Available for Benefit, Decrease Total deductions EBP, Change in Net Asset Available for Benefit, Increase (Decrease) Net increase in net assets prior to transfers from other qualified plans EBP, Change in Net Asset Available for Benefit, Transfer to (from) Plan Transfers from other qualified plans Amount of increase (decrease) in net asset available for benefit to participant after transfer to (from) other qualified plans in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Change In Net Asset Available For Benefit Increase (Decrease) After Transfer To (From) Plan Net increase Description of Plan EBP, Description of Plan [Table] EBP, Description of Plan [Line Items] Description of Plan EBP, Description of Plan [Text Block] Description of Plan Summary of Significant Accounting Policies EBP, Accounting Policy [Table] EBP, Accounting Policy [Line Items] Summary of Significant Accounting Policies EBP, Summary of Accounting Policy [Text Block] Summary of Significant Accounting Policies Income Tax Status EBP, Tax Status [Table] EBP, Tax Status [Line Items] Income Tax Status EBP, Tax Status [Text Block] Income Tax Status Transactions with Parties-in-Interest EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Line Items] Transactions with Parties-in-Interest EBP, Related Party and Party-in-Interest Transactions [Text Block] Transactions with Parties-in-Interest Risks and Uncertainties EBP, Risk and Uncertainty [Table] EBP, Risk and Uncertainty [Line Items] Risks and Uncertainties EBP, Risk and Uncertainty [Text Block] Risks and Uncertainties Fair Value Measurements EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Line Items] Fair Value Measurements EBP, Investment, Fair Value and NAV [Text Block] Fair Value Measurements Form 5500, Schedule H, Line 4i-Schedule of Assets (Held at End of Year) EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Line Items] Form 5500, Schedule H, Line 4i-Schedule of Assets (Held at End of Year) EBP, Schedule of Asset Held for Investment [Text Block] Form 5500, Schedule H, Line 4i-Schedule of Assets (Held at End of Year) EBP, Basis of Accounting [Policy Text Block] Basis of Accounting EBP, Investment [Policy Text Block] Investment Valuation and Income Recognition EBP, Payment to Participant [Policy Text Block] Benefit Payments EBP, Use of Estimate [Policy Text Block] Use of Estimates EBP, Note Receivable from Participant [Policy Text Block] Notes Receivable from Participants EBP, Expense [Policy Text Block] Administrative Expenses EBP, Investment, Fair Value and NAV [Table Text Block] Schedule of plan's investments at fair value Statistical Measurement [Axis] Statistical Measurement [Domain] Minimum [Member] Minimum Maximum [Member] Maximum Represents the minimum service hours for plan eligibility under (employee benefit plan (EBP)). Employee Benefit Plan, Minimum Service Hours For Plan Eligibility Minimum service hours for plan eligibility Represents the minimum service period for plan eligibility under (employee benefit plan (EBP)). Employee Benefit Plan, Minimum Service Period For Plan Eligibility Minimum service period for plan eligibility Represents the suspense account balance under (employee benefit plan (EBP)) deposited from residual assets of a frozen defined benefit plan of the Company. Employee Benefit Plan, Suspense Account, Balance Suspense account balance Represents the suspense account balance utilized during the year under (employee benefit plan (EBP)) deposited from residual assets of a frozen defined benefit plan of the Company. Employee Benefit Plan, Suspense Account Balance Funded To Employer Contributions Suspense account funded to employer contributions EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage Participants contribution percent EBP, Participant Contribution, Pretax, Maximum Annual Compensation, Amount Participants maximum contribution amount Represents the increase in percentage for directing investment allocations among plan investment options under (employee benefit plan (EBP)). Employee Benefit Plan, Investment Allocation Increment Percentage Investment allocation increment (as a percent) EBP, Participant Contribution, Automatic, Deferral Rate Automatic enrollment deferral rate (as a percent) Represents the maximum total employer contribution including automatic contribution under (employee benefit plan (EBP)). Employee Benefit Plan, Maximum Employer Contribution Including Automatic Contribution, Percentage Maximum total employer contribution (as a percent) EBP, Employer Contribution, Participant Compensation Matched, Percentage Employer matching contribution (as a percent) Represents the automatic contribution by employer under (employee benefit plan (EBP)). Employee Benefit Plan, Automatic Employer Contribution, Percentage Automatic employer contribution (as a percent) EBP, Employer Contribution, Matching Percentage Participant compensation matched (as a percent) Represents the minimum service period for employer contribution under (employee benefit plan (EBP)). Employee Benefit Plan, Minimum Service Period For Employer Contribution Minimum service period for employer contribution Represents the percentage of vesting under (employee benefit plan (EBP)). Employee Benefit Plan, Vesting Percentage Vesting percentage EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Minimum borrowing amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Maximum borrowing amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Maximum borrowing percentage Represents the term of the participant loans under (employee benefit plan (EBP)). Employee Benefit Plan, Note Receivable From Participant, Term Term of loan Represents the maximum term of the participant loans if proceeds are used for the purchase of primary residence under (employee benefit plan (EBP)). Employee Benefit Plan, Note Receivable From Participant, Maximum Term If Proceeds Used To Purchase Primary Residence Term of loan, purchase of primary residence Represents the percentage points added to the prime rate to compute the interest rate on participant loans under (employee benefit plan (EBP)). Employee Benefit Plan, Note Receivable From Participant, Basis Spread On Prime Rate Basis spread on prime rate (as a percent) Represents the number of annual installments under (employee benefit plan (EBP)). Employee Benefit Plan, Number Of Annual Installments Number of installments Represents the minimum vested balance for single lump sum payment in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Minimum Vested Balance For Single Lump Sum Payment Minimum account balance for single lump sum payment Investment Type [Axis] Investments [Domain] Common Collective Trust [Member] Common/collective trusts measured at NAV Common/collective trusts EBP, Fair Value, Investment, NAV, Unfunded Commitment Unfunded commitments EBP, Tax Determination Letter, Obtained [true false] Determination letter obtained EBP, Tax Determination Letter, Date Determination letter date EBP, Tax Qualification Status [Extensible Enumeration] Tax qualification status EBP, Related Party and Party-in-Interest [Axis] EBP, Related Party and Party-in-Interest [Domain] Employer of participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Employer [Member] Lincoln Electric Holdings, Inc EBP, Employer, Common Stock [Member] Lincoln Electric Stock EBP, Investment, Number of Shares Number of shares EBP, Investment Acquired, Excluding Plan Interest in Master Trust, Cost Value of shares purchased EBP, Investment Sold, Excluding Plan Interest in Master Trust, Selling Price Value of shares sold EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Dividend income Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Level 1, Level 2, and Level 3 Fair Value, Inputs, Level 1 [Member] Level 1 Fair Value Measured at Net Asset Value Per Share [Member] Fair value at NAV Mutual Fund [Member] Mutual funds Registered investment companies EBP, Self-Directed Brokerage Account [Member] Self-directed brokerage accounts Investment, Identifier [Axis] Entity Tax Identification Number Entity tax identification number EBP, Plan Number Plan number EBP, Investment, Issuer Name [Extensible Enumeration] EBP, Investment, Issuer Name [Extensible Enumeration] EBP, Investment, Current Value, Type [Extensible Enumeration] EBP, Investment, Current Value, Type [Extensible Enumeration] EBP, Asset Held for Investment, Party-in-Interest [true false] EBP, Asset Held for Investment, Party-in-Interest [true false] EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Current Value EBP, Asset Held for Investment, Participant Loan, Interest Rate Interest rates for participants loans EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Participants loans EBP, Asset Held for Investment Total assets