$LECO
LINCOLN ELECTRIC HOLDINGS INC Stock $leco

$leco Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000005952720000007 Filed on February 27, 2020

Income Statement

Concept	2019 Q4	2018 Q4	2018 Q3
Revenue	$736.3M	$743.8M	$737.1M
YoY Change	-1.01%	-0.45%	10.1%
Cost Of Revenue	$495.4M	$493.5M	$485.5M
YoY Change	0.39%	-3.03%	7.51%
Gross Profit	$240.9M	$250.3M	$251.6M
YoY Change	-3.74%	5.06%	15.45%
Gross Profit Margin	32.72%	33.65%	34.13%
Selling, General & Admin	$141.9M	$156.1M	$148.1M
YoY Change	-9.1%	13.61%	10.69%
% of Gross Profit	58.9%	62.37%	58.89%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$21.10M	$18.40M	$17.60M
YoY Change	14.67%	4.55%	-4.86%
% of Gross Profit	8.76%	7.35%	7.0%
Operating Expenses	$141.9M	$156.2M	$148.1M
YoY Change	-9.15%	13.6%	10.69%
Operating Profit	$99.03M	$94.10M	$100.8M
YoY Change	5.24%	-6.6%	-25.7%
Interest Expense	-$13.00M	-$500.0K	$5.962M
YoY Change	2500.0%	-97.46%	0.68%
% of Operating Profit	-13.13%	-0.53%	5.92%
Other Income/Expense, Net	$3.200M	$1.700M	-$1.074M
YoY Change	88.24%	54.55%	166.5%
Pretax Income	$80.29M	$94.46M	$95.74M
YoY Change	-14.99%	28.11%	-26.71%
Income Tax	$16.60M	$12.10M	$25.21M
% Of Pretax Income	20.67%	12.81%	26.33%
Net Earnings	$63.70M	$86.80M	$70.54M
YoY Change	-26.61%	258.68%	-33.53%
Net Earnings / Revenue	8.65%	11.67%	9.57%
Basic Earnings Per Share	$1.04	$1.36	$1.09
Diluted Earnings Per Share	$1.03	$1.35	$1.07
COMMON SHARES
Basic Shares Outstanding			64.82M shares
Diluted Shares Outstanding			65.65M shares

Balance Sheet

Concept	2019 Q4	2018 Q4	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$199.6M	$358.8M	$497.5M
YoY Change	-44.38%	-29.06%	3.92%
Cash & Equivalents	$199.6M	$358.8M	$398.2M
Short-Term Investments		$0.00	$99.28M
Other Short-Term Assets	$107.6M	$120.2M	$121.1M
YoY Change	-10.49%	-2.91%	11.08%
Inventory	$393.7M	$361.8M	$377.4M
Prepaid Expenses	$17.44M	$17.08M
Receivables	$374.6M	$396.9M	$409.6M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.076B	$1.238B	$1.406B
YoY Change	-13.11%	-9.89%	1.95%
LONG-TERM ASSETS
Property, Plant & Equipment	$529.3M	$478.8M	$461.8M
YoY Change	10.56%	0.37%	-2.79%
Goodwill	$337.1M	$281.3M	$233.7M
YoY Change	19.84%	19.91%	-0.91%
Intangibles	$177.8M	$147.9M
YoY Change	20.18%	16.08%
Long-Term Investments	$4.274M	$31.23M
YoY Change	-86.31%	9.47%
Other Assets	$237.1M	$183.6M	$318.5M
YoY Change	29.15%	3.18%	-0.92%
Total Long-Term Assets	$1.296B	$1.112B	$1.014B
YoY Change	16.51%	7.66%	-1.78%
TOTAL ASSETS
Total Short-Term Assets	$1.076B	$1.238B	$1.406B
Total Long-Term Assets	$1.296B	$1.112B	$1.014B
Total Assets	$2.371B	$2.350B	$2.420B
YoY Change	0.91%	-2.36%	0.35%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$273.0M	$268.6M	$246.8M
YoY Change	1.64%	-0.43%	1.87%
Accrued Expenses	$96.60M	$94.20M	$138.6M
YoY Change	2.55%	2.5%
Deferred Revenue	$16.27M
YoY Change
Short-Term Debt	$34.90M	$0.00	$800.0K
YoY Change		-100.0%	-61.9%
Long-Term Debt Due	$112.0K	$100.0K
YoY Change	12.0%	0.0%
Total Short-Term Liabilities	$563.1M	$538.2M	$545.6M
YoY Change	4.64%	1.79%	1.05%
LONG-TERM LIABILITIES
Long-Term Debt	$712.3M	$702.5M	$698.5M
YoY Change	1.4%	-0.23%	-0.89%
Other Long-Term Liabilities	$212.4M	$175.5M	$247.8M
YoY Change	21.02%	-12.46%	12.35%
Total Long-Term Liabilities	$924.7M	$1.462B	$1.492B
YoY Change	-36.76%	-0.8%	1.82%
TOTAL LIABILITIES
Total Short-Term Liabilities	$563.1M	$538.2M	$545.6M
Total Long-Term Liabilities	$924.7M	$1.462B	$1.492B
Total Liabilities	$1.552B	$1.462B	$2.037B
YoY Change	6.15%	-0.8%	1.61%
SHAREHOLDERS EQUITY
Retained Earnings	$2.736B	$2.564B	$2.505B
YoY Change	6.71%	7.38%	4.84%
Common Stock	$399.3M	$370.2M	$367.6M
YoY Change	7.87%	7.55%	8.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$2.042B	$1.754B	$1.674B
YoY Change	16.41%	12.9%	9.1%
Treasury Stock Shares	$37.99M	35.04M shares
Shareholders Equity	$818.2M	$886.9M	$927.2M
YoY Change
Total Liabilities & Shareholders Equity	$2.371B	$2.350B	$2.420B
YoY Change	0.91%	-2.36%	0.35%

Cashflow Statement

Concept	2019 Q4	2018 Q4	2018 Q3
OPERATING ACTIVITIES
Net Income	$63.70M	$86.80M	$70.54M
YoY Change	-26.61%	258.68%	-33.53%
Depreciation, Depletion And Amortization	$21.10M	$18.40M	$17.60M
YoY Change	14.67%	4.55%	-4.86%
Cash From Operating Activities	$122.5M	$99.40M	$106.2M
YoY Change	23.24%	11.19%	13.34%
INVESTING ACTIVITIES
Capital Expenditures	-$16.00M	-$22.50M	-$17.30M
YoY Change	-28.89%	-0.88%	58.72%
Acquisitions
YoY Change
Other Investing Activities	$2.000M	-$4.900M	$50.10M
YoY Change	-140.82%	-1325.0%	-134.08%
Cash From Investing Activities	-$14.00M	-$27.50M	$32.80M
YoY Change	-49.09%	23.87%	-120.79%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-69.40M	-105.6M	-97.80M
YoY Change	-34.28%	156.93%	156.69%
NET CHANGE
Cash From Operating Activities	122.5M	99.40M	106.2M
Cash From Investing Activities	-14.00M	-27.50M	32.80M
Cash From Financing Activities	-69.40M	-105.6M	-97.80M
Net Change In Cash	39.10M	-33.70M	41.20M
YoY Change	-216.02%	-229.12%	-140.31%
FREE CASH FLOW
Cash From Operating Activities	$122.5M	$99.40M	$106.2M
Capital Expenditures	-$16.00M	-$22.50M	-$17.30M
Free Cash Flow	$138.5M	$121.9M	$123.5M
YoY Change	13.62%	8.74%	18.07%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000059527
CY2019	dei	Entity Registrant Name EntityRegistrantName	LINCOLN ELECTRIC HOLDINGS INC
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	12827000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	16002000	USD
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	240000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	240000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	98581434	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	98581434	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	63545878	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	60592096	shares
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	17000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	346000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	19252000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-58000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	1691000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	4188000	USD
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.049
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	35035556	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	37989338	shares
CY2018Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	1392000	USD
CY2019Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	1282000	USD
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	0-1402
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	OH
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	34-1860551
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	22801 St. Clair Avenue
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Cleveland
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	OH
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	44117
CY2019	dei	City Area Code CityAreaCode	216
CY2019	dei	Local Phone Number LocalPhoneNumber	481-8100
CY2019	dei	Security12b Title Security12bTitle	Common Shares, without par value
CY2019	dei	Trading Symbol TradingSymbol	LECO
CY2019	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	5236546343	USD
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	60364079	shares
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3003272000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3028674000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2624431000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1995685000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2000153000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1749324000	USD
CY2019	us-gaap	Gross Profit GrossProfit	1007587000	USD
CY2018	us-gaap	Gross Profit GrossProfit	1028521000	USD
CY2017	us-gaap	Gross Profit GrossProfit	875107000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	621489000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	627697000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	541225000	USD
CY2019	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	15188000	USD
CY2018	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	25285000	USD
CY2017	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	6590000	USD
CY2019	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	0	USD
CY2018	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	0	USD
CY2017	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	49650000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	370910000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	375539000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	376942000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-23415000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-17565000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-19432000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	20998000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	10686000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	8726000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	368493000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	368660000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	366236000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	75410000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	81667000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	118761000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	293083000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	286993000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	247475000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-26000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-73000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-28000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	293109000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	287066000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	247503000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-68000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	819000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.73
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.42
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.76
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.68
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.37
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.71
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.90
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.64
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.44
CY2019	us-gaap	Profit Loss ProfitLoss	293083000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	286993000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	247475000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	288000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-11503000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-3228000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-10662000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	6735000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-50693000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	71016000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	18170000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-46646000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	81966000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	311253000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	240347000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	329441000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	255000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-166000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	87000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	310998000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	240513000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	329354000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	199563000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	358849000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	374649000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	396885000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	393748000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	361829000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	107621000	USD
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	120236000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	1075581000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	1237799000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	529344000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	478801000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	177798000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	147946000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	337107000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	281294000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	14275000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	20395000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	237108000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	183590000	USD
CY2019Q4	us-gaap	Assets Assets	2371213000	USD
CY2018Q4	us-gaap	Assets Assets	2349825000	USD
CY2019Q4	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	34857000	USD
CY2018Q4	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	0	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	273002000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	268600000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	83033000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	94202000	USD
CY2019Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	29690000	USD
CY2018Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	29867000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	142441000	USD
CY2018Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	145402000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	112000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	111000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	563135000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	538182000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	712302000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	702549000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	64286000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	45985000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	212413000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	175517000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	1552136000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	1462233000	USD
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	9858000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	9858000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	389446000	USD
CY2018Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	360308000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2736481000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2564440000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-275850000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-293739000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	2041763000	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	1753925000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	818172000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	886942000	USD
CY2019Q4	us-gaap	Minority Interest MinorityInterest	905000	USD
CY2018Q4	us-gaap	Minority Interest MinorityInterest	650000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	819077000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	887592000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2371213000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2349825000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	712206000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	247475000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-10662000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	288000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	71016000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	95355000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	932453000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	29325000	USD
CY2017	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	43164000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-371944000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	286993000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-3228000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	819000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-50693000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	106802000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	23244000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	201650000	USD
CY2018	leco	Equity Increase Decreasefrom Transactionswith Noncontrolling Interest Holders EquityIncreaseDecreasefromTransactionswithNoncontrollingInterestHolders	0	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	887592000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	293083000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-11503000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-68000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	6735000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	117950000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	30971000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	292693000	USD
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	-96000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	819077000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	293109000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	287066000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	247503000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-26000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-73000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-28000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	293083000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	286993000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	247475000	USD
CY2019	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	3500000	USD
CY2018	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	-5978000	USD
CY2017	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	1441000	USD
CY2019	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	0	USD
CY2018	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	0	USD
CY2017	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	49650000	USD
CY2019	leco	Income Tax Expense Benefit Net Resultingfrom Tax Reform Act IncomeTaxExpenseBenefitNetResultingfromTaxReformAct	0	USD
CY2018	leco	Income Tax Expense Benefit Net Resultingfrom Tax Reform Act IncomeTaxExpenseBenefitNetResultingfromTaxReformAct	399000	USD
CY2017	leco	Income Tax Expense Benefit Net Resultingfrom Tax Reform Act IncomeTaxExpenseBenefitNetResultingfromTaxReformAct	28616000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	81487000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	72346000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	68115000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	1427000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	3034000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	337000	USD
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	13019000	USD
CY2018	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	1490000	USD
CY2017	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	4058000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	16624000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	18554000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	12698000	USD
CY2019	leco	Defined Benefit Plan Pension Expense DefinedBenefitPlanPensionExpense	261000	USD
CY2018	leco	Defined Benefit Plan Pension Expense DefinedBenefitPlanPensionExpense	3068000	USD
CY2017	leco	Defined Benefit Plan Pension Expense DefinedBenefitPlanPensionExpense	2517000	USD
CY2019	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	7601000	USD
CY2018	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	0	USD
CY2017	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	0	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	8416000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	11002000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1402000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-50394000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	4061000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	16811000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	12023000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	23904000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-19448000	USD
CY2019	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-14269000	USD
CY2018	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-1324000	USD
CY2017	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	8143000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-8339000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	3636000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	17871000	USD
CY2019	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-31223000	USD
CY2018	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-13657000	USD
CY2017	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-13000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets And Liabilities Net IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet	423000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets And Liabilities Net IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet	-2978000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Assets And Liabilities Net IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet	-6158000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	403185000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	329152000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	334845000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	69615000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	71246000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	107000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	39000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	14347000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	4690000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	61656000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	134717000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	101792000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	72468000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	9509000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	16755000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2301000	USD
CY2019	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	USD
CY2018	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	268335000	USD
CY2017	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	205584000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	0	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	447459000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	65380000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-2000000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2000000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-192823000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	20841000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-272027000	USD
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	24429000	USD
CY2018	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	-835000	USD
CY2017	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	-491000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	34000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	107000	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	16627000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	292693000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	201650000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	43164000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	117920000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	102058000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	92452000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-2170000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-15552000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-302130000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-135037000	USD
CY2018Q4	us-gaap	Land Land	61784000	USD
CY2019Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	427165000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	32148000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-52478000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	358849000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2296000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-15715000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	19741000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-159286000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	326701000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	379179000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	199563000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	358849000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	326701000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	5291000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	4885000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	5654000	USD
CY2019Q4	us-gaap	Percentage Of Lifo Inventory PercentageOfLIFOInventory	0.36
CY2018Q4	us-gaap	Percentage Of Lifo Inventory PercentageOfLIFOInventory	0.37
CY2019Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	24088000	USD
CY2018Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	24502000	USD
CY2019Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	17437000	USD
CY2018Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	17078000	USD
CY2019Q4	us-gaap	Land Land	71676000	USD
CY2018Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	414698000	USD
CY2019Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	856272000	USD
CY2018Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	781136000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1355113000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1257618000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	825769000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	778817000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	529344000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	478801000	USD
CY2019	leco	Product Warranty Services Period ProductWarrantyServicesPeriod	P3Y
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	47899000	USD
CY2019	leco	Costs Related To Discretionary Employee Bonus Programs CostsRelatedToDiscretionaryEmployeeBonusPrograms	100381000	USD
CY2018	leco	Costs Related To Discretionary Employee Bonus Programs CostsRelatedToDiscretionaryEmployeeBonusPrograms	123799000	USD
CY2017	leco	Costs Related To Discretionary Employee Bonus Programs CostsRelatedToDiscretionaryEmployeeBonusPrograms	97392000	USD
CY2019Q4	leco	Percentage Net Sales Over Time PercentageNetSalesOverTime	0.10
CY2019	leco	Maximum Periodforwhich Derivative Contracts Cover Currencyand Commodity Exposures MaximumPeriodforwhichDerivativeContractsCoverCurrencyandCommodityExposures	P3Y
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	56845000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	54168000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-top:8px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Estimates</span></div><div style="line-height:120%;padding-top:8px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions in certain circumstances that affect the amounts reported in the accompanying consolidated financial statements and notes. Actual results could differ from these estimates.</span></div>
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3003272000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3028674000	USD
CY2019Q4	us-gaap	Customer Advances Current CustomerAdvancesCurrent	16040000	USD
CY2019Q4	us-gaap	Billings In Excess Of Cost Current BillingsInExcessOfCostCurrent	16274000	USD
CY2018Q4	us-gaap	Customer Advances Current CustomerAdvancesCurrent	17023000	USD
CY2018Q4	us-gaap	Billings In Excess Of Cost Current BillingsInExcessOfCostCurrent	17013000	USD
CY2019Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	33566000	USD
CY2018Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	25032000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	293109000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	287066000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	247503000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	61960000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64886000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65739000	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	698000	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	796000	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	904000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	62658000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65682000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	66643000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.73
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.42
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.76
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.68
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.37
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.71
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	524110	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	324688	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	157033	shares
CY2017	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	49650000	USD
CY2017	leco	Business Combination Inventory Step Up BusinessCombinationInventoryStepUp	4578000	USD
CY2018Q1	leco	Business Combination Receivable From Seller BusinessCombinationReceivableFromSeller	10983000	USD
CY2019	leco	Acquisition Transactionand Integration Costs AcquisitionTransactionandIntegrationCosts	1804000	USD
CY2018	leco	Acquisition Transactionand Integration Costs AcquisitionTransactionandIntegrationCosts	4498000	USD
CY2017	leco	Acquisition Transactionand Integration Costs AcquisitionTransactionandIntegrationCosts	15002000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	234582000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	18247000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	15740000	USD
CY2018	leco	Goodwill Additions And Adjustments GoodwillAdditionsAndAdjustments	52157000	USD
CY2018	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-5445000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	281294000	USD
CY2019	leco	Goodwill Additions And Adjustments GoodwillAdditionsAndAdjustments	53987000	USD
CY2019	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	1826000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	337107000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	302549000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	146771000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	251516000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	126955000	USD
CY2019	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	50070000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	20755000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	15744000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	15671000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	22002000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	21191000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	20267000	USD
CY2019	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2019Q4	us-gaap	Percentage Of Lifo Inventory PercentageOfLIFOInventory	0.36
CY2018Q4	us-gaap	Percentage Of Lifo Inventory PercentageOfLIFOInventory	0.37
CY2017Q4	us-gaap	Percentage Of Lifo Inventory PercentageOfLIFOInventory	0.32
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3003272000	USD
CY2019	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	0	USD
CY2019	us-gaap	Revenues Revenues	3003272000	USD
CY2019	leco	Income Loss Before Interest And Income Taxes Adjusted IncomeLossBeforeInterestAndIncomeTaxesAdjusted	400753000	USD
CY2019	leco	Special Items Charge Gain SpecialItemsChargeGain	8845000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Interest Expense Interest Income Income Taxes Extraordinary Items Noncontrolling Interests Net IncomeLossFromContinuingOperationsBeforeInterestExpenseInterestIncomeIncomeTaxesExtraordinaryItemsNoncontrollingInterestsNet	391908000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	2527000	USD
CY2019	us-gaap	Interest Expense InterestExpense	25942000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	368493000	USD
CY2019Q4	us-gaap	Assets Assets	2371213000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	4274000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	69615000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	81487000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3028674000	USD
CY2018	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	0	USD
CY2018	us-gaap	Revenues Revenues	3028674000	USD
CY2018	leco	Income Loss Before Interest And Income Taxes Adjusted IncomeLossBeforeInterestAndIncomeTaxesAdjusted	422694000	USD
CY2018	leco	Special Items Charge Gain SpecialItemsChargeGain	36469000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Interest Expense Interest Income Income Taxes Extraordinary Items Noncontrolling Interests Net IncomeLossFromContinuingOperationsBeforeInterestExpenseInterestIncomeIncomeTaxesExtraordinaryItemsNoncontrollingInterestsNet	386225000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	6938000	USD
CY2018	us-gaap	Interest Expense InterestExpense	24503000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	368660000	USD
CY2018Q4	us-gaap	Assets Assets	2349825000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	31228000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	71246000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	72346000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2624431000	USD
CY2017	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	0	USD
CY2017	us-gaap	Revenues Revenues	2624431000	USD
CY2017	leco	Income Loss Before Interest And Income Taxes Adjusted IncomeLossBeforeInterestAndIncomeTaxesAdjusted	370338000	USD
CY2017	leco	Special Items Charge Gain SpecialItemsChargeGain	-15330000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Interest Expense Interest Income Income Taxes Extraordinary Items Noncontrolling Interests Net IncomeLossFromContinuingOperationsBeforeInterestExpenseInterestIncomeIncomeTaxesExtraordinaryItemsNoncontrollingInterestsNet	385668000	USD
CY2017Q4	us-gaap	Assets Assets	2406547000	USD
CY2017	us-gaap	Investment Income Interest InvestmentIncomeInterest	4788000	USD
CY2017	us-gaap	Interest Expense InterestExpense	24220000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	366236000	USD
CY2017Q4	us-gaap	Equity Method Investments EquityMethodInvestments	28526000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	61656000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	68115000	USD
CY2017	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	49650000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3003272000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3028674000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2624431000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	529344000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	478801000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	477031000	USD
CY2019	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	15188000	USD
CY2018	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	25285000	USD
CY2017	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	6590000	USD
CY2017Q4	us-gaap	Restructuring Reserve RestructuringReserve	6803000	USD
CY2018	us-gaap	Payments For Restructuring PaymentsForRestructuring	26874000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	31263000	USD
CY2018Q4	us-gaap	Restructuring Reserve RestructuringReserve	11192000	USD
CY2019	us-gaap	Payments For Restructuring PaymentsForRestructuring	14678000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	11688000	USD
CY2019Q4	us-gaap	Restructuring Reserve RestructuringReserve	8202000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-247186000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-54372000	USD
CY2018	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-7819000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-46553000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-293739000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	15674000	USD
CY2019	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-2215000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	17889000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-275850000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Including Current Maturities LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities	712414000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Including Current Maturities LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities	702660000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	112000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	111000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	712302000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	702549000	USD
CY2019Q4	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	34857000	USD
CY2018Q4	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	0	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	112000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	111000	USD
CY2019Q4	us-gaap	Debt Current DebtCurrent	34969000	USD
CY2018Q4	us-gaap	Debt Current DebtCurrent	111000	USD
CY2019Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	747271000	USD
CY2018Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	702660000	USD
CY2019Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	721494000	USD
CY2018Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	649714000	USD
CY2019	us-gaap	Line Of Credit Facility Expiration Date1 LineOfCreditFacilityExpirationDate1	2022-06-30
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Repayments Of Principal In Next Twelve Months LongTermDebtAndCapitalLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths	34969000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Two LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo	119000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Three LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree	105000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Four LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour	10607000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Five LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive	0	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal After Year Five LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive	700000000	USD
CY2019	us-gaap	Interest Paid InterestPaid	24950000	USD
CY2018	us-gaap	Interest Paid InterestPaid	23790000	USD
CY2017	us-gaap	Interest Paid InterestPaid	23820000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	3017391	shares
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	3012000	USD
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	3511000	USD
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	3040000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4861000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Transition Assets Obligations After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetTransitionAssetsObligationsAfterTax	-21000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Amortization Of Gain Loss Next Fiscal Year DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear	-3105000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Amortization Of Prior Service Cost Credit Next Fiscal Year DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear	60000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Amortization Of Transition Asset Obligation Next Fiscal Year DefinedBenefitPlanExpectedAmortizationOfTransitionAssetObligationNextFiscalYear	3000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	16624000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	18554000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12698000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4151000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4632000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	19817000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y
CY2019Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	55000000	shares
CY2019	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	3400000	shares
CY2019	leco	Common Share Repurchases CommonShareRepurchases	288134000	USD
CY2019	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	85.52
CY2019Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	2800000	shares
CY2020Q1	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	10000000	shares
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax	-70205000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax	320000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	663163000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	600998000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	695224000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	612265000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2019	leco	Defined Contribution Plan Employer Match Level One DefinedContributionPlanEmployerMatchLevelOne	1
CY2019	leco	Defined Contribution Plan Employer Match Employee Contribution Level One DefinedContributionPlanEmployerMatchEmployeeContributionLevelOne	0.03
CY2019	leco	Defined Contribution Plan Employers Additional Annual Match DefinedContributionPlanEmployersAdditionalAnnualMatch	0.03
CY2019	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	24835000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	26477000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	25285000	USD
CY2019	leco	Guaranteed Continuous Employment Plan Minimum Percentage Of Every Standard Work Week For Which Company Will Provide Work To Employees GuaranteedContinuousEmploymentPlanMinimumPercentageOfEveryStandardWorkWeekForWhichCompanyWillProvideWorkToEmployees	0.75
CY2019	leco	Guaranteed Continuous Employment Plan Standard Hours In Work Week GuaranteedContinuousEmploymentPlanStandardHoursInWorkWeek	40	hours
CY2019	leco	Guaranteed Continuous Employment Plan Termination Notice Period Minimum GuaranteedContinuousEmploymentPlanTerminationNoticePeriodMinimum	P6M
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	3163000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5481000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2742000	USD
CY2019	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	-2787000	USD
CY2018	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	-502000	USD
CY2017	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	-769000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	15048000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4703000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	5215000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	20998000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	10686000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	8726000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	237296000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	255088000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	213171000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	131197000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	113572000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	153065000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	368493000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	368660000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	366236000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	25063000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	45521000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	89182000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	26540000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	28894000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	25746000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	9064000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	10515000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	7640000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	60667000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	84930000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	122568000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	6971000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-691000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-4391000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	6513000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-3121000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-82000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1259000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	549000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	666000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	14743000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3263000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3807000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	75410000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	81667000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	118761000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	77384000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	77419000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	128182000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	8830000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	8844000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	5671000	USD
CY2019	leco	Income Tax Reconciliation Excess Tax Benefits Stock Options IncomeTaxReconciliationExcessTaxBenefitsStockOptions	-3451000	USD
CY2018	leco	Income Tax Reconciliation Excess Tax Benefits Stock Options IncomeTaxReconciliationExcessTaxBenefitsStockOptions	-1094000	USD
CY2017	leco	Income Tax Reconciliation Excess Tax Benefits Stock Options IncomeTaxReconciliationExcessTaxBenefitsStockOptions	-6276000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	4823000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	21949000	USD
CY2019	leco	Income Tax Reconciliation Foreign Withholding Taxes IncomeTaxReconciliationForeignWithholdingTaxes	0	USD
CY2018	leco	Income Tax Reconciliation Foreign Withholding Taxes IncomeTaxReconciliationForeignWithholdingTaxes	-4424000	USD
CY2017	leco	Income Tax Reconciliation Foreign Withholding Taxes IncomeTaxReconciliationForeignWithholdingTaxes	6667000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	-9432000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	-457000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	2216000	USD
CY2019	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	4315000	USD
CY2018	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	2647000	USD
CY2017	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	0	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	7023000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-4560000	USD
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-13929000	USD
CY2019	leco	Income Tax Reconciliation Bargain Purchase Gain IncomeTaxReconciliationBargainPurchaseGain	0	USD
CY2018	leco	Income Tax Reconciliation Bargain Purchase Gain IncomeTaxReconciliationBargainPurchaseGain	0	USD
CY2017	leco	Income Tax Reconciliation Bargain Purchase Gain IncomeTaxReconciliationBargainPurchaseGain	-17556000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	3198000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	5596000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	102000	USD
CY2019	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	0	USD
CY2018	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	0	USD
CY2017	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	5922000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	4786000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	3859000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	2688000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	959000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2026000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	345000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	75410000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	81667000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	118761000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.205
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.222
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.324
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	42880000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	85805000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	81691000	USD
CY2019Q4	leco	Deferred Tax Assets Tax Loss And Credit Carryforwards DeferredTaxAssetsTaxLossAndCreditCarryforwards	64712000	USD
CY2018Q4	leco	Deferred Tax Assets Tax Loss And Credit Carryforwards DeferredTaxAssetsTaxLossAndCreditCarryforwards	60756000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	3442000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	3544000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	13048000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	13172000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	24532000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	22963000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	11561000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	12122000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	3401000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	3739000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	120696000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	116296000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	71546000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	69400000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	49150000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	46896000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	39583000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	28606000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	16695000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	10950000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Inventory Costs DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts	6427000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Inventory Costs DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts	4814000	USD
CY2019Q4	leco	Deferred Tax Liabilities Pension Obligations DeferredTaxLiabilitiesPensionObligations	25171000	USD
CY2018Q4	leco	Deferred Tax Liabilities Pension Obligations DeferredTaxLiabilitiesPensionObligations	19346000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	11285000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	8770000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	99161000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	72486000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	50011000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	25590000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration	51129000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Not Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration	213724000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	71546000	USD
CY2019Q4	leco	Foreign Withholding Taxes Liability ForeignWithholdingTaxesLiability	1697000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	-1957000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	-1277000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	4512000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	6655000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	28804000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	28449000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1204000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1431000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	-101000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	4917000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	3567000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	111000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	5692000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1501000	USD
CY2019	leco	Unrecognized Tax Benefits Other Adjustments UnrecognizedTaxBenefitsOtherAdjustments	-63000	USD
CY2018	leco	Unrecognized Tax Benefits Other Adjustments UnrecognizedTaxBenefitsOtherAdjustments	-4381000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	20585000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	28804000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	17552000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	25069000	USD
CY2019Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	2971000	USD
CY2019	us-gaap	Cash Flow Hedge Ineffectiveness Is Immaterial CashFlowHedgeIneffectivenessIsImmaterial	Hedge ineffectiveness was immaterial for each of the three years in the period ended December 31, 2019.
CY2019	us-gaap	Derivative Instruments Gain Loss Reclassification From Accumulated Oci To Income Estimate Of Time To Transfer1 DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimateOfTimeToTransfer1	P12M
CY2019Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	116716000	USD
CY2018Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	103820000	USD
CY2019Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	63744000	USD
CY2018Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	53950000	USD
CY2019Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	213288000	USD
CY2018Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	204059000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	393748000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	361829000	USD
CY2019Q4	us-gaap	Percentage Of Lifo Inventory PercentageOfLIFOInventory	0.36
CY2018Q4	us-gaap	Percentage Of Lifo Inventory PercentageOfLIFOInventory	0.37
CY2019Q4	us-gaap	Excess Of Replacement Or Current Costs Over Stated Lifo Value ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue	75292000	USD
CY2018Q4	us-gaap	Excess Of Replacement Or Current Costs Over Stated Lifo Value ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue	79626000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	51533000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	13572000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	39076000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	52648000	USD
CY2019	us-gaap	Lease Cost LeaseCost	25389000	USD
CY2018	us-gaap	Lease Cost LeaseCost	25720000	USD
CY2017	us-gaap	Lease Cost LeaseCost	20450000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	17800000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	19216000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	15235000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	11509000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	8766000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	7220000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	5787000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	10929000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	59446000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	6798000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	52648000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y3M18D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.036
CY2018Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	19778000	USD
CY2017Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	22029000	USD
CY2016Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	21053000	USD
CY2019	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	17094000	USD
CY2018	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	8897000	USD
CY2017	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	9901000	USD
CY2019	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	16211000	USD
CY2018	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	11403000	USD
CY2017	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	11500000	USD
CY2019	leco	Standard And Extended Product Warranty Accrual Foreign Currency Translation Gain Lossand Other Adjustments StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLossandOtherAdjustments	-11000	USD
CY2018	leco	Standard And Extended Product Warranty Accrual Foreign Currency Translation Gain Lossand Other Adjustments StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLossandOtherAdjustments	255000	USD
CY2017	leco	Standard And Extended Product Warranty Accrual Foreign Currency Translation Gain Lossand Other Adjustments StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLossandOtherAdjustments	2575000	USD
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	20650000	USD
CY2018Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	19778000	USD
CY2017Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	22029000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	759174000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	777008000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	730783000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	736307000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	258421000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	269881000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	238351000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	240934000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	92918000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	103484000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	91797000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	80294000	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	71480000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	85452000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	72461000	USD
CY2019Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	63716000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.13
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.37
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.18
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.04
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.12
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.36
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.17
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.03
CY2018Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	757696000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	790052000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	737099000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	743827000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	256554000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	270116000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	251552000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	250299000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	84198000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	94263000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	95744000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	94455000	USD
CY2018Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	60824000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	68864000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	70539000	USD
CY2018Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	86839000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.93
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.05
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.09
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.36
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.92
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.04
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.07
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.35
CY2019Q1	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	3535000	USD
CY2019Q1	leco	Restructuring Settlement And Impairment Provisions Net Of Tax RestructuringSettlementAndImpairmentProvisionsNetOfTax	2814000	USD
CY2019Q1	leco	Acquisition Transactionand Integration Costs AcquisitionTransactionandIntegrationCosts	790000	USD
CY2019Q1	leco	Acquisition Transactionand Integration Costs Netof Tax AcquisitionTransactionandIntegrationCostsNetofTax	698000	USD
CY2018Q1	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-758000	USD
CY2018Q1	leco	Defined Benefit Plan Recognized Net Gain Loss Dueto Settlementsand Curtailments Netof Tax DefinedBenefitPlanRecognizedNetGainLossDuetoSettlementsandCurtailmentsNetofTax	-569000	USD
CY2018Q1	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	10175000	USD
CY2018Q1	leco	Restructuring Settlement And Impairment Provisions Net Of Tax RestructuringSettlementAndImpairmentProvisionsNetOfTax	7870000	USD
CY2018Q1	leco	Income Tax Expense Benefit Net Resultingfrom Tax Reform Act IncomeTaxExpenseBenefitNetResultingfromTaxReformAct	2500000	USD
CY2018Q1	leco	Acquisition Transactionand Integration Costs AcquisitionTransactionandIntegrationCosts	1907000	USD
CY2018Q1	leco	Acquisition Transactionand Integration Costs Netof Tax AcquisitionTransactionandIntegrationCostsNetofTax	1520000	USD
CY2019Q2	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	3554000	USD
CY2019Q2	leco	Gain Loss On Dispositionof Assets1 Netof Tax GainLossOnDispositionofAssets1NetofTax	2586000	USD
CY2019Q2	leco	Business Combination Inventory Step Up BusinessCombinationInventoryStepUp	1399000	USD
CY2019Q2	leco	Business Combination Inventory Step Up Netof Tax BusinessCombinationInventoryStepUpNetofTax	1049000	USD
CY2019Q2	leco	Acquisition Transactionand Integration Costs AcquisitionTransactionandIntegrationCosts	1014000	USD
CY2019Q2	leco	Acquisition Transactionand Integration Costs Netof Tax AcquisitionTransactionandIntegrationCostsNetofTax	867000	USD
CY2019Q2	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	1307000	USD
CY2019Q2	leco	Restructuring Settlement And Impairment Provisions Net Of Tax RestructuringSettlementAndImpairmentProvisionsNetOfTax	937000	USD
CY2019Q2	leco	Income Tax Reconciliation Expense Impairment Losses IncomeTaxReconciliationExpenseImpairmentLosses	4852000	USD
CY2018Q2	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	11542000	USD
CY2018Q2	leco	Restructuring Settlement And Impairment Provisions Net Of Tax RestructuringSettlementAndImpairmentProvisionsNetOfTax	10362000	USD
CY2018Q2	leco	Acquisition Transactionand Integration Costs AcquisitionTransactionandIntegrationCosts	788000	USD
CY2018Q2	leco	Acquisition Transactionand Integration Costs Netof Tax AcquisitionTransactionandIntegrationCostsNetofTax	675000	USD
CY2019Q3	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	1495000	USD
CY2019Q3	leco	Restructuring Settlement And Impairment Provisions Net Of Tax RestructuringSettlementAndImpairmentProvisionsNetOfTax	1240000	USD
CY2019Q3	leco	Business Combination Inventory Step Up BusinessCombinationInventoryStepUp	1609000	USD
CY2018Q3	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-4232000	USD
CY2018Q3	leco	Income Tax Expense Benefit Net Resultingfrom Tax Reform Act IncomeTaxExpenseBenefitNetResultingfromTaxReformAct	2323000	USD
CY2018Q3	leco	Defined Benefit Plan Recognized Net Gain Loss Dueto Settlementsand Curtailments Netof Tax DefinedBenefitPlanRecognizedNetGainLossDuetoSettlementsandCurtailmentsNetofTax	-3176000	USD
CY2018Q3	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	2636000	USD
CY2018Q3	leco	Restructuring Settlement And Impairment Provisions Net Of Tax RestructuringSettlementAndImpairmentProvisionsNetOfTax	2575000	USD
CY2018Q3	leco	Acquisition Transactionand Integration Costs AcquisitionTransactionandIntegrationCosts	970000	USD
CY2018Q3	leco	Acquisition Transactionand Integration Costs Netof Tax AcquisitionTransactionandIntegrationCostsNetofTax	797000	USD
CY2019Q4	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	8851000	USD
CY2019Q4	leco	Restructuring Settlement And Impairment Provisions Net Of Tax RestructuringSettlementAndImpairmentProvisionsNetOfTax	7284000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-1696000	USD
CY2018Q4	leco	Defined Benefit Plan Recognized Net Gain Loss Dueto Settlementsand Curtailments Netof Tax DefinedBenefitPlanRecognizedNetGainLossDuetoSettlementsandCurtailmentsNetofTax	-1272000	USD
CY2018Q4	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	932000	USD
CY2018Q4	leco	Restructuring Settlement And Impairment Provisions Net Of Tax RestructuringSettlementAndImpairmentProvisionsNetOfTax	-841000	USD
CY2018Q4	leco	Income Tax Expense Benefit Net Resultingfrom Tax Reform Act IncomeTaxExpenseBenefitNetResultingfromTaxReformAct	-4424000	USD
CY2018Q4	leco	Acquisition Transactionand Integration Costs AcquisitionTransactionandIntegrationCosts	833000	USD
CY2018Q4	leco	Acquisition Transactionand Integration Costs Netof Tax AcquisitionTransactionandIntegrationCostsNetofTax	690000	USD

Files In Submission

Name	View Source	Status
0000059527-20-000007-index-headers.html	Edgar Link	pending
0000059527-20-000007-index.html	Edgar Link	pending
0000059527-20-000007.txt	Edgar Link	pending
0000059527-20-000007-xbrl.zip	Edgar Link	pending
exhibit10322019.htm	Edgar Link	pending
exhibit10382019.htm	Edgar Link	pending
exhibit10432019.htm	Edgar Link	pending
exhibit10472019.htm	Edgar Link	pending
exhibit212019.htm	Edgar Link	pending
exhibit232019.htm	Edgar Link	pending
exhibit242019.htm	Edgar Link	pending
exhibit3112019.htm	Edgar Link	pending
exhibit3122019.htm	Edgar Link	pending
exhibit3212019.htm	Edgar Link	pending
exhibit412019.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
leco-20191231.xsd	Edgar Link	pending
leco-20191231x10k.htm	Edgar Link	pending
leco-20191231x10k_htm.xml	Edgar Link	completed
leco-20191231_cal.xml	Edgar Link	unprocessable
leco-20191231_def.xml	Edgar Link	unprocessable
leco-20191231_lab.xml	Edgar Link	unprocessable
leco-20191231_pre.xml	Edgar Link	unprocessable
MetaLinks.json	Edgar Link	pending
performancegraph3.jpg	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R100.htm	Edgar Link	pending
R101.htm	Edgar Link	pending
R102.htm	Edgar Link	pending
R103.htm	Edgar Link	pending
R104.htm	Edgar Link	pending
R105.htm	Edgar Link	pending
R106.htm	Edgar Link	pending
R107.htm	Edgar Link	pending
R108.htm	Edgar Link	pending
R109.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R110.htm	Edgar Link	pending
R111.htm	Edgar Link	pending
R112.htm	Edgar Link	pending
R113.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
R99.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$LECO
LINCOLN ELECTRIC HOLDINGS INC Stock $leco

2019 Q4 Form 10-K Financial Statement

#000005952720000007 Filed on February 27, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LECO LINCOLN ELECTRIC HOLDINGS INC Stock $leco

2019 Q4 Form 10-K Financial Statement

#000005952720000007 Filed on February 27, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LECO
LINCOLN ELECTRIC HOLDINGS INC Stock $leco