$LFUS
LITTELFUSE INC /DE Stock $lfus

$lfus Overview Financials Valuation SEC Filings Company Website

2022 Q1 Form 10-K Financial Statement

#000088933122000011 Filed on February 17, 2022

Income Statement

Concept	2022 Q1	2022	2021 Q3
Revenue	$553.1M	$2.080B	$539.6M
YoY Change	19.25%	0.0%	37.8%
Cost Of Revenue	$353.6M	$1.308B	$325.0M
YoY Change	16.56%	0.0%	28.6%
Gross Profit	$199.5M	$771.9M	$214.6M
YoY Change	24.32%	0.0%	54.56%
Gross Profit Margin	36.07%	37.11%	39.77%
Selling, General & Admin	$70.99M	$275.5M	$67.47M
YoY Change	21.78%	2.3%	35.13%
% of Gross Profit	35.58%	35.68%	31.44%
Research & Development	$19.03M	$65.94M	$15.78M
YoY Change	29.1%	0.0%	21.72%
% of Gross Profit	9.54%	8.54%	7.35%
Depreciation & Amortization	$25.59M	$98.64M	$24.64M
YoY Change	5.74%	0.0%	1.26%
% of Gross Profit	12.83%	12.78%	11.48%
Operating Expenses	$101.1M	$386.3M	$94.47M
YoY Change	20.42%	2.21%	27.19%
Operating Profit	$98.36M	$385.6M	$120.1M
YoY Change	28.6%	-2.12%	86.05%
Interest Expense	-$13.47M	$18.53M	$4.602M
YoY Change	-388.23%	-151.92%	-7.74%
% of Operating Profit	-13.69%	4.8%	3.83%
Other Income/Expense, Net	-$19.80M	-$8.932M	$1.240M
YoY Change	-355.9%	5.93%	-26.28%
Pretax Income	$59.53M	$341.0M	$113.6M
YoY Change	-18.13%	0.0%	68.47%
Income Tax	$7.585M	$57.22M	$21.54M
% Of Pretax Income	12.74%	16.78%	18.96%
Net Earnings	$51.94M	$283.8M	$92.05M
YoY Change	-10.0%	0.0%	66.29%
Net Earnings / Revenue	9.39%	13.64%	17.06%
Basic Earnings Per Share		$11.54	$3.74
Diluted Earnings Per Share	$2.076M	$11.38	$3.69
COMMON SHARES
Basic Shares Outstanding	24.69M shares	24.60M shares	24.62M shares
Diluted Shares Outstanding		24.93M shares	24.93M shares

Balance Sheet

Concept	2022 Q1	2022	2021 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$478.5M	$478.5M	$690.7M
YoY Change	-16.46%	0.0%	7.6%
Cash & Equivalents	$478.5M	$478.5M	$690.7M
Short-Term Investments	$28.00K	$28.00K	$28.00K
Other Short-Term Assets	$68.81M	$68.81M	$59.77M
YoY Change	57.46%	0.0%	99.23%
Inventory	$445.7M	$445.7M	$357.0M
Prepaid Expenses
Receivables	$275.2M	$275.2M	$325.7M
Other Receivables	$2.035M	$2.035M	$2.695M
Total Short-Term Assets	$1.270B	$1.270B	$1.436B
YoY Change	6.52%	0.0%	24.98%
LONG-TERM ASSETS
Property, Plant & Equipment	$437.9M	$467.5M	$364.3M
YoY Change	26.96%	0.0%	7.2%
Goodwill	$929.8M		$847.2M
YoY Change	9.96%		5.93%
Intangibles	$407.1M		$295.8M
YoY Change	28.31%		-0.13%
Long-Term Investments	$12.40M	$39.21M	$39.89M
YoY Change	-66.76%	0.0%	52.82%
Other Assets	$24.73M	$55.50M	$21.45M
YoY Change	23.89%	0.0%	22.09%
Total Long-Term Assets	$1.881B	$1.881B	$1.603B
YoY Change	18.0%	0.0%	6.45%
TOTAL ASSETS
Total Short-Term Assets	$1.270B	$1.270B	$1.436B
Total Long-Term Assets	$1.881B	$1.881B	$1.603B
Total Assets	$3.152B	$3.152B	$3.039B
YoY Change	13.09%	0.0%	14.47%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$222.0M	$222.0M	$221.9M
YoY Change	23.55%	0.0%	83.47%
Accrued Expenses	$159.7M	$157.3M	$139.7M
YoY Change	62.36%	0.0%	41.89%
Deferred Revenue			$740.0K
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$25.00M	$25.00M	$27.62M
YoY Change	0.0%	0.0%
Total Short-Term Liabilities	$434.6M	$434.6M	$421.6M
YoY Change	33.1%	0.0%	79.72%
LONG-TERM LIABILITIES
Long-Term Debt	$611.9M	$611.9M	$620.1M
YoY Change	-1.92%	0.0%	-14.53%
Other Long-Term Liabilities	$71.02M	$130.4M	$65.54M
YoY Change	5.36%	0.0%	2.98%
Total Long-Term Liabilities	$682.9M	$742.3M	$685.6M
YoY Change	-1.21%	0.0%	-13.12%
TOTAL LIABILITIES
Total Short-Term Liabilities	$434.6M	$434.6M	$421.6M
Total Long-Term Liabilities	$682.9M	$742.3M	$685.6M
Total Liabilities	$1.118B	$1.258B	$1.107B
YoY Change	9.8%	0.0%	8.16%
SHAREHOLDERS EQUITY
Retained Earnings	$1.268B		$1.229B
YoY Change	17.42%		24.57%
Common Stock	$260.0K		$260.0K
YoY Change	0.39%		0.78%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$248.1M		$248.1M
YoY Change	2.37%		2.37%
Treasury Stock Shares	1.665M shares		1.665M shares
Shareholders Equity	$1.893B	$1.893B	$1.821B
YoY Change
Total Liabilities & Shareholders Equity	$3.152B	$3.152B	$3.039B
YoY Change	13.09%	0.0%	14.47%

Cashflow Statement

Concept	2022 Q1	2022	2021 Q3
OPERATING ACTIVITIES
Net Income	$51.94M	$283.8M	$92.05M
YoY Change	-10.0%	0.0%	66.29%
Depreciation, Depletion And Amortization	$25.59M	$98.64M	$24.64M
YoY Change	5.74%	0.0%	1.26%
Cash From Operating Activities	$132.7M	$373.3M	$114.3M
YoY Change	164.48%	0.0%	81.46%
INVESTING ACTIVITIES
Capital Expenditures	-$33.04M	$90.56M	-$24.87M
YoY Change	-324.41%	0.0%	107.24%
Acquisitions		$423.6M
YoY Change
Other Investing Activities	-$300.5M	$390.0K	-$802.0K
YoY Change	180.07%	-100.1%
Cash From Investing Activities	-$333.5M	-$499.2M	-$25.67M
YoY Change	173.36%	0.0%	113.92%
FINANCING ACTIVITIES
Cash Dividend Paid		$49.73M
YoY Change
Common Stock Issuance & Retirement, Net		$0.00
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-8.107M	-$68.98M	-11.69M
YoY Change	-76.35%	0.0%	-83.03%
NET CHANGE
Cash From Operating Activities	132.7M	$373.3M	114.3M
Cash From Investing Activities	-333.5M	-$499.2M	-25.67M
Cash From Financing Activities	-8.107M	-$68.98M	-11.69M
Net Change In Cash	-209.0M	-$204.7M	76.95M
YoY Change	89.59%	5.08%	-529.91%
FREE CASH FLOW
Cash From Operating Activities	$132.7M	$373.3M	$114.3M
Capital Expenditures	-$33.04M	$90.56M	-$24.87M
Free Cash Flow	$165.7M	$282.8M	$139.2M
YoY Change	367.53%	0.0%	85.58%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022	dei	Entity Registrant Name EntityRegistrantName	LITTELFUSE INC /DE
CY2022	dei	Entity Central Index Key EntityCentralIndexKey	0000889331
CY2022	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2022	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2022	dei	Amendment Flag AmendmentFlag	false
CY2020Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccruedLiabilitiesCurrent
CY2022Q1	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccruedLiabilitiesCurrent
CY2022	dei	Document Type DocumentType	10-K
CY2022	dei	Document Annual Report DocumentAnnualReport	true
CY2022	dei	Document Period End Date DocumentPeriodEndDate	2022-01-01
CY2022	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--01-01
CY2022	dei	Document Transition Report DocumentTransitionReport	false
CY2022	dei	Entity File Number EntityFileNumber	0-20388
CY2022	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2022	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	36-3795742
CY2022	dei	Entity Address Address Line1 EntityAddressAddressLine1	8755 West Higgins Road
CY2022	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 500
CY2022	dei	Entity Address City Or Town EntityAddressCityOrTown	Chicago
CY2022	dei	Entity Address State Or Province EntityAddressStateOrProvince	IL
CY2022	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	60631
CY2022	dei	City Area Code CityAreaCode	773
CY2022	dei	Local Phone Number LocalPhoneNumber	628-1000
CY2022	dei	Security12b Title Security12bTitle	Common Stock, $0.01 par value
CY2022	dei	Trading Symbol TradingSymbol	LFUS
CY2022	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2022	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2022	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2022	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2022	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2022	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2022	dei	Entity Small Business EntitySmallBusiness	false
CY2022	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2022	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2022	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	6125123061	USD
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	24689579	shares
CY2022	dei	Auditor Firm AuditorFirmId	248
CY2022	dei	Auditor Name AuditorName	GRANT THORNTON LLP
CY2022	dei	Auditor Location AuditorLocation	Southfield, Michigan
CY2022Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	478473000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	687525000	USD
CY2022Q1	us-gaap	Short Term Investments ShortTermInvestments	28000	USD
CY2020Q4	us-gaap	Short Term Investments ShortTermInvestments	54000	USD
CY2022Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	59232000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	45237000	USD
CY2022Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	275192000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	232760000	USD
CY2022Q1	us-gaap	Inventory Net InventoryNet	445671000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	258002000	USD
CY2022Q1	us-gaap	Prepaid Taxes PrepaidTaxes	2035000	USD
CY2020Q4	us-gaap	Prepaid Taxes PrepaidTaxes	3029000	USD
CY2022Q1	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	68812000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	35939000	USD
CY2022Q1	us-gaap	Assets Current AssetsCurrent	1270211000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	1217309000	USD
CY2022Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	437889000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	344178000	USD
CY2022Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	407126000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	291887000	USD
CY2022Q1	us-gaap	Goodwill Goodwill	929790000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	816812000	USD
CY2022Q1	us-gaap	Long Term Investments LongTermInvestments	39211000	USD
CY2020Q4	us-gaap	Long Term Investments LongTermInvestments	30547000	USD
CY2022Q1	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	13127000	USD
CY2020Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	11224000	USD
CY2022Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	29616000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	17615000	USD
CY2022Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	24734000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	18021000	USD
CY2022Q1	us-gaap	Assets Assets	3151704000	USD
CY2020Q4	us-gaap	Assets Assets	2747593000	USD
CY2022Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	222039000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	145984000	USD
CY2022Q1	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	159689000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	110478000	USD
CY2022Q1	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	27905000	USD
CY2020Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	19186000	USD
CY2022Q1	us-gaap	Long Term Debt Current LongTermDebtCurrent	25000000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2022Q1	us-gaap	Liabilities Current LiabilitiesCurrent	434633000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	275648000	USD
CY2022Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	611897000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	687034000	USD
CY2022Q1	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	81289000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	50134000	USD
CY2022Q1	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	37037000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	45802000	USD
CY2022Q1	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	22305000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	12950000	USD
CY2022Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	71023000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	67252000	USD
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	34000000	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	34000000	shares
CY2022Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	26350763	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	26131544	shares
CY2022Q1	us-gaap	Common Stock Value CommonStockValue	260000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	259000	USD
CY2022Q1	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	946588000	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	907858000	USD
CY2022Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	1664711	shares
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1644283	shares
CY2022Q1	us-gaap	Treasury Stock Value TreasuryStockValue	248120000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	242366000	USD
CY2022Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-73463000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-91157000	USD
CY2022Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1268124000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1034048000	USD
CY2022Q1	us-gaap	Stockholders Equity StockholdersEquity	1893389000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	1608642000	USD
CY2022Q1	us-gaap	Minority Interest MinorityInterest	131000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	131000	USD
CY2022Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1893520000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1608773000	USD
CY2022Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3151704000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2747593000	USD
CY2022	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2079928000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1445695000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1503873000	USD
CY2022	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1308002000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	944523000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	957578000	USD
CY2022	us-gaap	Gross Profit GrossProfit	771926000	USD
CY2020	us-gaap	Gross Profit GrossProfit	501172000	USD
CY2019	us-gaap	Gross Profit GrossProfit	546295000	USD
CY2022	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	275457000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	204507000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	220448000	USD
CY2022	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	65940000	USD
CY2020	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	52538000	USD
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	79997000	USD
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	42729000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	40039000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	40026000	USD
CY2022	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	2158000	USD
CY2020	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	41716000	USD
CY2019	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	13033000	USD
CY2022	us-gaap	Operating Expenses OperatingExpenses	386284000	USD
CY2020	us-gaap	Operating Expenses OperatingExpenses	338800000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	353504000	USD
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	385642000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	162372000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	192791000	USD
CY2022	us-gaap	Interest Expense InterestExpense	18527000	USD
CY2020	us-gaap	Interest Expense InterestExpense	21077000	USD
CY2019	us-gaap	Interest Expense InterestExpense	22266000	USD
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-17158000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	14875000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-5224000	USD
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-8932000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	5083000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	583000	USD
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	341025000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	161253000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	165884000	USD
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	57219000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31267000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26802000	USD
CY2022	us-gaap	Profit Loss ProfitLoss	283806000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	129986000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	139082000	USD
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	11.54
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.33
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.66
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	11.38
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.29
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.60
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24603000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24371000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24576000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	24932000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	24592000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	24818000	shares
CY2022	us-gaap	Profit Loss ProfitLoss	283806000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	129986000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	139082000	USD
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-22213000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	16095000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	8087000	USD
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-4519000	USD
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	31761000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-812000	USD
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	301500000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	145652000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	130183000	USD
CY2022	us-gaap	Profit Loss ProfitLoss	283806000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	129986000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	139082000	USD
CY2022	us-gaap	Depreciation Depreciation	55906000	USD
CY2020	us-gaap	Depreciation Depreciation	56139000	USD
CY2019	us-gaap	Depreciation Depreciation	52477000	USD
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	42729000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	40039000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	40026000	USD
CY2022	us-gaap	Pension Expense Reversal Of Expense Noncash PensionExpenseReversalOfExpenseNoncash	19855000	USD
CY2020	us-gaap	Pension Expense Reversal Of Expense Noncash PensionExpenseReversalOfExpenseNoncash	0	USD
CY2019	us-gaap	Pension Expense Reversal Of Expense Noncash PensionExpenseReversalOfExpenseNoncash	0	USD
CY2022	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	36078000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	322000	USD
CY2022	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-2570000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-593000	USD
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	10234000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-318000	USD
CY2022	lfus	Non Cash Inventory Charges NonCashInventoryCharges	8397000	USD
CY2020	lfus	Non Cash Inventory Charges NonCashInventoryCharges	0	USD
CY2019	lfus	Non Cash Inventory Charges NonCashInventoryCharges	0	USD
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	19611000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	18129000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	19046000	USD
CY2022	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	8907000	USD
CY2020	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	4663000	USD
CY2019	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-4854000	USD
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-8020000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3214000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1147000	USD
CY2022	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-20275000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	18230000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-6638000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	25588000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-28497000	USD
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	104555000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	12425000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-22094000	USD
CY2022	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	40481000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	28820000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-22574000	USD
CY2022	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	30793000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	6765000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-54242000	USD
CY2022	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	14223000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-6788000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-10573000	USD
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	373344000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	258031000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	245328000	USD
CY2022	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	423633000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	775000	USD
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	90562000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	56191000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	61895000	USD
CY2022	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	15425000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	4758000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	6213000	USD
CY2022	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	390000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-499160000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-51433000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-56457000	USD
CY2022	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	0	USD
CY2020	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	240000000	USD
CY2019	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	0	USD
CY2022	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	30000000	USD
CY2020	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	110000000	USD
CY2019	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	0	USD
CY2022	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	2619000	USD
CY2020	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	145000000	USD
CY2019	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	10000000	USD
CY2022	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	13365000	USD
CY2020	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	18744000	USD
CY2019	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	7800000	USD
CY2022	us-gaap	Payments Of Dividends PaymentsOfDividends	49730000	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	46839000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	44689000	USD
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	22927000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	99387000	USD
CY2022	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1786000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-68984000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-67808000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-146276000	USD
CY2022	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-9889000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	17596000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-1189000	USD
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-204689000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	156386000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	41406000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	687525000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	531139000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	489733000	USD
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	482836000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	687525000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	531139000	USD
CY2022Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	478473000	USD
CY2022Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	478473000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	687525000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	531139000	USD
CY2022Q1	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	2718000	USD
CY2022Q1	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	2718000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	0	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	0	USD
CY2022Q1	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	1645000	USD
CY2022Q1	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	1645000	USD
CY2020Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	0	USD
CY2019Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	0	USD
CY2022	us-gaap	Interest Paid Net InterestPaidNet	17420000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	20095000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	21240000	USD
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	55561000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	27619000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	40518000	USD
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	11872000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	6126000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	11110000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1478342000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	139082000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8899000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	19046000	USD
CY2019	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	25940	shares
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	4957000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	13124000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	95036000	USD
CY2022	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	20428	shares
CY2022	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	5754000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.82
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	44688000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1496014000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	129986000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	15666000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	18129000	USD
CY2020	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	20250	shares
CY2020	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	2992000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	21736000	USD
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	22927000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.92
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	46839000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1608773000	USD
CY2022	us-gaap	Profit Loss ProfitLoss	283806000	USD
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	17694000	USD
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	19611000	USD
CY2022	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	19120000	USD
CY2022	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	2.02
CY2022	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	49730000	USD
CY2022Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1893520000	USD
CY2022Q1	us-gaap	Number Of Countries In Which Entity Operates NumberOfCountriesInWhichEntityOperates	15	country
CY2022Q1	lfus	Global Associates GlobalAssociates	17000	associate
CY2022	lfus	Number Of Customers NumberOfCustomers	100000	customer
CY2022	us-gaap	Fiscal Period FiscalPeriod	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Fiscal Year</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%"> </span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div>References herein to “2021”, “fiscal 2021” or “fiscal year 2021” refer to the fiscal year ended January 1, 2022. References herein to “2020”, “fiscal 2020” or “fiscal year 2020” refer to the fiscal year ended December 26, 2020. References herein to “2019”, “fiscal 2019” or “fiscal year 2019” refer to the fiscal year ended December 28, 2019. The Company operates on a 52-53 week fiscal year (4-4-5 basis) ending on the Saturday closest to December 31. Therefore, the financial results of certain fiscal years and the associated 14 week quarters will not be exactly comparable to the prior 52 week fiscal years and the associated quarters having only 13 weeks. As a result of using this convention, the fiscal year 2021 contained 53 weeks while each of fiscal 2020 and fiscal 2019 contained 52 weeks.
CY2022	us-gaap	Use Of Estimates UseOfEstimates	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%"> </span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The process of preparing financial statements in conformity with generally accepted accounting principles in the U.S. requires management to make estimates and assumptions that affect the amounts of assets and liabilities at the date of the Consolidated Financial Statements, and the reported amounts of revenues and expenses and the accompanying notes. The Company evaluates and updates its assumptions and estimates on an ongoing basis and may employ outside experts to assist in its evaluation, as considered necessary. Actual results could differ from those estimates.</span></div>
CY2022Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	478473000	USD
CY2022Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	478473000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	687525000	USD
CY2022Q1	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	2718000	USD
CY2022Q1	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	2718000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	0	USD
CY2022Q1	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	1645000	USD
CY2022Q1	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	1645000	USD
CY2020Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	0	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1445695000	USD
CY2022	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	500000	USD
CY2020	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	100000	USD
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	482836000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	687525000	USD
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1300000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2022Q1	us-gaap	Equity Method Investments EquityMethodInvestments	12400000	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	11400000	USD
CY2022Q1	us-gaap	Equity Method Investment Aggregate Cost EquityMethodInvestmentAggregateCost	0	USD
CY2020	us-gaap	Number Of Reporting Units NumberOfReportingUnits	7	reporting_unit
CY2022	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2079928000	USD
CY2022Q1	us-gaap	Allowance For Doubtful Accounts Receivable Noncurrent AllowanceForDoubtfulAccountsReceivableNoncurrent	1900000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Noncurrent AllowanceForDoubtfulAccountsReceivableNoncurrent	1400000	USD
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-17200000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	14900000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-5200000	USD
CY2022Q1	us-gaap	Loss Contingency Accrual Carrying Value Noncurrent LossContingencyAccrualCarryingValueNoncurrent	1900000	EUR
CY2022Q1	us-gaap	Loss Contingency Accrual Carrying Value Noncurrent LossContingencyAccrualCarryingValueNoncurrent	2100000	USD
CY2020Q4	us-gaap	Loss Contingency Accrual Carrying Value Noncurrent LossContingencyAccrualCarryingValueNoncurrent	2300000	EUR
CY2020Q4	us-gaap	Loss Contingency Accrual Carrying Value Noncurrent LossContingencyAccrualCarryingValueNoncurrent	2900000	USD
CY2022	lfus	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability Toll Charge Noncurrent IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiabilityTollChargeNoncurrent	17800000	USD
CY2022	lfus	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability Toll Charge Current IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiabilityTollChargeCurrent	3000000	USD
CY2022	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	4500000	USD
CY2022Q1	lfus	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Restricted Cash And Cash Equivalents BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRestrictedCashAndCashEquivalents	1700000	USD
CY2022	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	2257390000	USD
CY2020	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1662896000	USD
CY2022	lfus	Business Acquisition Pro Forma Income Loss From Continuing Operations Before Tax BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeTax	357090000	USD
CY2020	lfus	Business Acquisition Pro Forma Income Loss From Continuing Operations Before Tax BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeTax	141491000	USD
CY2022	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	296030000	USD
CY2020	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	115078000	USD
CY2022	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	12.03
CY2020	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	4.72
CY2022	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	11.87
CY2020	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	4.68
CY2022	lfus	Inventory Amortization Period InventoryAmortizationPeriod	P4M
CY2022Q1	us-gaap	Inventory Raw Materials InventoryRawMaterials	168409000	USD
CY2020Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	85394000	USD
CY2022Q1	us-gaap	Inventory Work In Process InventoryWorkInProcess	117506000	USD
CY2020Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	92783000	USD
CY2022Q1	us-gaap	Inventory Finished Goods InventoryFinishedGoods	195656000	USD
CY2020Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	114641000	USD
CY2022Q1	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	35900000	USD
CY2020Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	34816000	USD
CY2022Q1	us-gaap	Inventory Net InventoryNet	445671000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	258002000	USD
CY2022Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	516437000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	480390000	USD
CY2022Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	437889000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	344178000	USD
CY2022	us-gaap	Depreciation Depreciation	55900000	USD
CY2020	us-gaap	Depreciation Depreciation	56100000	USD
CY2019	us-gaap	Depreciation Depreciation	52500000	USD
CY2019Q4	us-gaap	Goodwill Gross GoodwillGross	829383000	USD
CY2019Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	8794000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	820589000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	33841000	USD
CY2020	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	30064000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	715169000	USD
CY2020Q4	us-gaap	Goodwill Gross GoodwillGross	862230000	USD
CY2020Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	45418000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	816812000	USD
CY2022	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	134809000	USD
CY2022	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-22007000	USD
CY2022Q1	us-gaap	Goodwill Gross GoodwillGross	975032000	USD
CY2022Q1	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	45242000	USD
CY2022Q1	us-gaap	Goodwill Goodwill	929790000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	308043000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	407126000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	563464000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	271577000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	291887000	USD
CY2022	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	165550000	USD
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	42700000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	40000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	40000000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	50035000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	45569000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	42151000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	41776000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	33245000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	194350000	USD
CY2022Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	407126000	USD
CY2022Q1	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	92018000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	50689000	USD
CY2022Q1	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	9018000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	6811000	USD
CY2022Q1	us-gaap	Interest And Dividends Payable Current InterestAndDividendsPayableCurrent	4402000	USD
CY2020Q4	us-gaap	Interest And Dividends Payable Current InterestAndDividendsPayableCurrent	4517000	USD
CY2022Q1	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	4299000	USD
CY2020Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	3321000	USD
CY2022Q1	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	4280000	USD
CY2020Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	2126000	USD
CY2022Q1	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	2944000	USD
CY2020Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	4195000	USD
CY2022Q1	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	1248000	USD
CY2022Q1	us-gaap	Deferred Revenue DeferredRevenue	1105000	USD
CY2020Q4	us-gaap	Deferred Revenue DeferredRevenue	2959000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	2751000	USD
CY2022Q1	lfus	Other Customer Reserves OtherCustomerReserves	702000	USD
CY2020Q4	lfus	Other Customer Reserves OtherCustomerReserves	3858000	USD
CY2022Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	39673000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	29251000	USD
CY2022Q1	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	159689000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	110478000	USD
CY2022Q1	lfus	Lessor Operating Lease Number Of Renewal Options LessorOperatingLeaseNumberOfRenewalOptions	1	renewal
CY2022Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	29616000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	17615000	USD
CY2022Q1	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	9018000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	6811000	USD
CY2022Q1	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	22305000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	12950000	USD
CY2022Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	31323000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	19761000	USD
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	345000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	512000	USD
CY2022	us-gaap	Variable Lease Cost VariableLeaseCost	1165000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	1307000	USD
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	9929000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	8591000	USD
CY2022	us-gaap	Operating Lease Expense OperatingLeaseExpense	11439000	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	10410000	USD
CY2022	us-gaap	Operating Lease Expense OperatingLeaseExpense	11400000	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	10400000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	10100000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1322000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	10080000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	7840000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	7323000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3135000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	4607000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	34307000	USD
CY2022Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	31323000	USD
CY2022Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y9M14D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y4M28D
CY2022Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0427
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0506
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	10150000	USD
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	20217000	USD
CY2022	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	4058000	USD
CY2022	us-gaap	Restructuring Charges RestructuringCharges	2158000	USD
CY2022	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	2158000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	5638000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	36078000	USD
CY2020	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	41716000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	12711000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	322000	USD
CY2019	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	13033000	USD
CY2022	us-gaap	Restructuring Charges RestructuringCharges	2200000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	5600000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	36100000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	12700000	USD
CY2022Q1	us-gaap	Restructuring Reserve RestructuringReserve	2900000	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	4200000	USD
CY2022Q1	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	3087000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	4114000	USD
CY2022Q1	us-gaap	Long Term Debt LongTermDebt	636897000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	687034000	USD
CY2022Q1	us-gaap	Long Term Debt Current LongTermDebtCurrent	25000000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2022Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	611897000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	687034000	USD
CY2022	us-gaap	Interest Paid Net InterestPaidNet	17400000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	20100000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	21200000	USD
CY2020Q1	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	100000000	USD
CY2022Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	25000000	USD
CY2022Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	132444000	USD
CY2022Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	0	USD
CY2022Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	150000000	USD
CY2022Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	USD
CY2022Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	332540000	USD
CY2022Q1	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	639984000	USD
CY2022	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	500000	USD
CY2020	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	100000	USD
CY2022Q1	us-gaap	Equity Method Investment Aggregate Cost EquityMethodInvestmentAggregateCost	0	USD
CY2020Q4	us-gaap	Equity Method Investment Aggregate Cost EquityMethodInvestmentAggregateCost	500000	USD
CY2020	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	200000	USD
CY2022Q1	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	12475000	USD
CY2022Q1	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	26070000	USD
CY2022Q1	us-gaap	Trading Securities Debt TradingSecuritiesDebt	15021000	USD
CY2022Q1	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	53566000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	73461000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	19186000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	40000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	39000	USD
CY2020Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	13249000	USD
CY2020Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	105896000	USD
CY2022Q1	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	1248000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	2751000	USD
CY2022Q1	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	37037000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	45802000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-38245000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-48514000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-9221000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-37285000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	3340000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	3937000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	12561000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	41222000	USD
CY2022	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	179000	USD
CY2022	lfus	Defined Benefit Plan Amortization Of Net Actuarial Cost DefinedBenefitPlanAmortizationOfNetActuarialCost	1136000	USD
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	-209000	USD
CY2022	us-gaap	Defined Benefit Plan Actuarial Gain Loss Immediate Recognition As Component In Net Periodic Benefit Cost Credit DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit	-6734000	USD
CY2022	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-19855000	USD
CY2022	lfus	Defined Benefit Plan Foreign Currency Adjustments Immediate Recognition As Component In Net Periodic Benefit Cost Credit DefinedBenefitPlanForeignCurrencyAdjustmentsImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit	966000	USD
CY2022	lfus	Defined Benefit Plan Immediate Recognition As Component In Net Periodic Benefit Cost Credit DefinedBenefitPlanImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit	28661000	USD
CY2022	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	2785000	USD
CY2020	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	2462000	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	2040000	USD
CY2022	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1761000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	2173000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	3169000	USD
CY2022	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	1458000	USD
CY2020	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	1972000	USD
CY2019	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	3187000	USD
CY2022	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-1315000	USD
CY2020	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-963000	USD
CY2019	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-243000	USD
CY2022	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	4403000	USD
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	3626000	USD
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	2265000	USD
CY2022	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-19855000	USD
CY2020	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-236000	USD
CY2019	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-260000	USD
CY2022	us-gaap	Pension Expense PensionExpense	24258000	USD
CY2020	us-gaap	Pension Expense PensionExpense	3862000	USD
CY2019	us-gaap	Pension Expense PensionExpense	2525000	USD
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.012
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.023
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.031
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.014
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.037
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.045
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.049
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.047
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.046
CY2022Q1	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation	86228000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation	148992000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Plan Assets DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets	47942000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Plan Assets DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets	100439000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.023
CY2022Q1	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.048
CY2022Q1	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	68643000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	130453000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	39060000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	92248000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.031
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.012
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.049
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.047
CY2022Q1	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	3514000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	3652000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	3561000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	4068000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	4320000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	26449000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	2600000	USD
CY2022	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	2100000	USD
CY2020	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	2000000	USD
CY2019	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	1400000	USD
CY2022Q1	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	4100000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	3500000	USD
CY2022	us-gaap	Amount Recognized In Net Periodic Benefit Cost And Other Comprehensive Income Loss Before Tax AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax	300000	USD
CY2020	us-gaap	Amount Recognized In Net Periodic Benefit Cost And Other Comprehensive Income Loss Before Tax AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax	100000	USD
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	700000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	700000	USD
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.014
CY2022Q1	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1
CY2020Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	126.61
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	10636	shares
CY2022Q1	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	48325000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	100478000	USD
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	800000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	666949	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	148.01
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	57928	shares
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	267.66
CY2022	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	151015	shares
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	83749000	USD
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	240030	shares
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	148.66
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	151.93
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	563226	shares
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	165.98
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y8M12D
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y8M12D
CY2022Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	39850000	USD
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	23800000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	20600000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	12500000	USD
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	18900000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	9500000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	15500000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	19100000	USD
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Share Based Liabilities Paid ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsShareBasedLiabilitiesPaid	1300000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Share Based Liabilities Paid ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsShareBasedLiabilitiesPaid	500000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Share Based Liabilities Paid ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsShareBasedLiabilitiesPaid	900000	USD
CY2022Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	21900000	USD
CY2022	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y9M18D
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	21400000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	19900000	USD
CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3300000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3100000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3300000	USD
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	74.04
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	38.09
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	47.63
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0066
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.270
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0030
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0233
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0072
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0127
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0086
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.350
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.330
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y4M24D
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y8M12D
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y4M24D
CY2022	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	175110	shares
CY2019	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	579916	shares
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	22900000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	95000000	USD
CY2022	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	20514000	USD
CY2022	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	2820000	USD
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	17694000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	15194000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-472000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	15666000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-10625000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-1726000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8899000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8899000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	15666000	USD
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	17694000	USD
CY2020Q2	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	13400000	USD
CY2022	lfus	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability Toll Charge Noncurrent IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiabilityTollChargeNoncurrent	17800000	USD
CY2022	lfus	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability Toll Charge Current IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiabilityTollChargeCurrent	3000000	USD
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	13746000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-16732000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-11970000	USD
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	327279000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	177985000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	177854000	USD
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	341025000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	161253000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	165884000	USD
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	4832000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	437000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-3495000	USD
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1401000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	203000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	834000	USD
CY2022	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	59006000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	33841000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	30610000	USD
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	65239000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	34481000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	27949000	USD
CY2022	us-gaap	Deferred Federal State And Local Tax Expense Benefit DeferredFederalStateAndLocalTaxExpenseBenefit	-9658000	USD
CY2020	us-gaap	Deferred Federal State And Local Tax Expense Benefit DeferredFederalStateAndLocalTaxExpenseBenefit	-5354000	USD
CY2019	us-gaap	Deferred Federal State And Local Tax Expense Benefit DeferredFederalStateAndLocalTaxExpenseBenefit	1839000	USD
CY2022	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1638000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	2140000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-2986000	USD
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-8020000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3214000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1147000	USD
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	57219000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31267000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26802000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	3300000	USD
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	71615000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	33863000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	34836000	USD
CY2022	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-31414000	USD
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-19730000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-22457000	USD
CY2022	lfus	Effective Income Tax Reconciliation Non Us Losses And Expenses With No Tax Benefits EffectiveIncomeTaxReconciliationNonUSLossesAndExpensesWithNoTaxBenefits	7820000	USD
CY2020	lfus	Effective Income Tax Reconciliation Non Us Losses And Expenses With No Tax Benefits EffectiveIncomeTaxReconciliationNonUSLossesAndExpensesWithNoTaxBenefits	2774000	USD
CY2019	lfus	Effective Income Tax Reconciliation Non Us Losses And Expenses With No Tax Benefits EffectiveIncomeTaxReconciliationNonUSLossesAndExpensesWithNoTaxBenefits	6570000	USD
CY2022	lfus	Effective Income Tax Reconciliation Undistributed Foreign Earnings EffectiveIncomeTaxReconciliationUndistributedForeignEarnings	7585000	USD
CY2020	lfus	Effective Income Tax Reconciliation Undistributed Foreign Earnings EffectiveIncomeTaxReconciliationUndistributedForeignEarnings	3955000	USD
CY2019	lfus	Effective Income Tax Reconciliation Undistributed Foreign Earnings EffectiveIncomeTaxReconciliationUndistributedForeignEarnings	2136000	USD
CY2022	lfus	Effective Income Tax Rate Reconciliation Change In Unrecognized Tax Benefits And Related Accrued Interest EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefitsAndRelatedAccruedInterest	4263000	USD
CY2020	lfus	Effective Income Tax Rate Reconciliation Change In Unrecognized Tax Benefits And Related Accrued Interest EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefitsAndRelatedAccruedInterest	2160000	USD
CY2019	lfus	Effective Income Tax Rate Reconciliation Change In Unrecognized Tax Benefits And Related Accrued Interest EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefitsAndRelatedAccruedInterest	-1468000	USD
CY2022	lfus	Effective Income Tax Rate Reconciliation Impact Of Tax Provisions Amount EffectiveIncomeTaxRateReconciliationImpactOfTaxProvisionsAmount	-238000	USD
CY2020	lfus	Effective Income Tax Rate Reconciliation Impact Of Tax Provisions Amount EffectiveIncomeTaxRateReconciliationImpactOfTaxProvisionsAmount	3731000	USD
CY2019	lfus	Effective Income Tax Rate Reconciliation Impact Of Tax Provisions Amount EffectiveIncomeTaxRateReconciliationImpactOfTaxProvisionsAmount	6469000	USD
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-172000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-584000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1080000	USD
CY2022	lfus	Tax Impact On Non Deductible Goodwill Impairment Charge TaxImpactOnNonDeductibleGoodwillImpairmentCharge	0	USD
CY2020	lfus	Tax Impact On Non Deductible Goodwill Impairment Charge TaxImpactOnNonDeductibleGoodwillImpairmentCharge	5642000	USD
CY2019	lfus	Tax Impact On Non Deductible Goodwill Impairment Charge TaxImpactOnNonDeductibleGoodwillImpairmentCharge	0	USD
CY2022	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-2240000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-544000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-364000	USD
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	57219000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31267000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26802000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	36168000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	31123000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	27818000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	24763000	USD
CY2022Q1	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	16089000	USD
CY2020Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	10352000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	5636000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	0	USD
CY2022Q1	lfus	Deferred Tax Assets Capitalized Expense DeferredTaxAssetsCapitalizedExpense	4878000	USD
CY2020Q4	lfus	Deferred Tax Assets Capitalized Expense DeferredTaxAssetsCapitalizedExpense	4178000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	1104000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	3724000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	980000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	772000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	183000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	117000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	92856000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	75029000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	34869000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Unrealized Currency Transaction Gains DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains	5719000	USD
CY2022Q1	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	12563000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	13131000	USD
CY2022Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	57987000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	61898000	USD
CY2022Q1	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	98046000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	76472000	USD
CY2022Q1	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	15467000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	14223000	USD
CY2022Q1	us-gaap	Deferred Tax Liabilities Unrealized Currency Transaction Gains DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains	73000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	4394000	USD
CY2022Q1	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	126149000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	100808000	USD
CY2022Q1	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	68162000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	38910000	USD
CY2022	us-gaap	Income Taxes Paid IncomeTaxesPaid	58200000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	35200000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	47600000	USD
CY2022	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	2600000	USD
CY2020	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	7600000	USD
CY2019	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	7100000	USD
CY2022Q1	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	884000000	USD
CY2022Q1	lfus	Deferred Tax Liabilities Recognized On Undistributed Foreign Earnings DeferredTaxLiabilitiesRecognizedOnUndistributedForeignEarnings	15500000	USD
CY2020Q4	lfus	Deferred Tax Liabilities Recognized On Undistributed Foreign Earnings DeferredTaxLiabilitiesRecognizedOnUndistributedForeignEarnings	14200000	USD
CY2022	lfus	Income Tax Holiday Expense Benefit Amount Per Diluted Share IncomeTaxHolidayExpenseBenefitAmountPerDilutedShare	0.31
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16721000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	700000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	103000	USD
CY2020	lfus	Unrecognized Tax Benefits Increase Resulting From Other Positions UnrecognizedTaxBenefitsIncreaseResultingFromOtherPositions	119000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17437000	USD
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	3260000	USD
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1587000	USD
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1100000	USD
CY2022	lfus	Unrecognized Tax Benefits Increase Resulting From Other Positions UnrecognizedTaxBenefitsIncreaseResultingFromOtherPositions	61000	USD
CY2022Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	23445000	USD
CY2022	us-gaap	Income Tax Examination Interest Expense IncomeTaxExaminationInterestExpense	1600000	USD
CY2020	us-gaap	Income Tax Examination Interest Expense IncomeTaxExaminationInterestExpense	1600000	USD
CY2020	lfus	Income Tax Examination Decrease Due To Lapse Of Statute Of Limitations IncomeTaxExaminationDecreaseDueToLapseOfStatuteOfLimitations	600000	USD
CY2019	us-gaap	Income Tax Examination Interest Expense IncomeTaxExaminationInterestExpense	1300000	USD
CY2019	lfus	Income Tax Examination Decrease Due To Lapse Of Statute Of Limitations IncomeTaxExaminationDecreaseDueToLapseOfStatuteOfLimitations	600000	USD
CY2022Q1	us-gaap	Income Tax Examination Interest Accrued IncomeTaxExaminationInterestAccrued	10400000	USD
CY2020Q4	us-gaap	Income Tax Examination Interest Accrued IncomeTaxExaminationInterestAccrued	8800000	USD
CY2022	us-gaap	Profit Loss ProfitLoss	283806000	USD
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	24592000	shares
CY2020	us-gaap	Profit Loss ProfitLoss	129986000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	139082000	USD
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24603000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24371000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24576000	shares
CY2022	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	329000	shares
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	221000	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	242000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	24932000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	24818000	shares
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	11.54
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.33
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.66
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	11.38
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.29
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.60
CY2022	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	20139	shares
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	222526	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	129658	shares
CY2022	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	175110	shares
CY2019	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	579916	shares
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	22900000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	95000000	USD
CY2022	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2022	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2079928000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1445695000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1503873000	USD
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	98635000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	96178000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	92503000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	162372000	USD
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	385642000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	192791000	USD
CY2022	us-gaap	Interest Expense InterestExpense	18527000	USD
CY2020	us-gaap	Interest Expense InterestExpense	21077000	USD
CY2019	us-gaap	Interest Expense InterestExpense	22266000	USD
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-17158000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	14875000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-5224000	USD
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-8932000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	5083000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	583000	USD
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	341025000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	161253000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	165884000	USD
CY2022	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2079928000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1445695000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1503873000	USD
CY2022Q1	us-gaap	Noncurrent Assets NoncurrentAssets	437889000	USD
CY2020Q4	us-gaap	Noncurrent Assets NoncurrentAssets	344178000	USD
CY2019Q4	us-gaap	Noncurrent Assets NoncurrentAssets	344617000	USD
CY2022	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	96308000	USD
CY2020	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	51208000	USD
CY2019	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	66366000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	553065000	USD
CY2021Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	539581000	USD
CY2021Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	523488000	USD
CY2021Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	463794000	USD
CY2020Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	400696000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	391566000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	307337000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	346096000	USD
	us-gaap	Gross Profit GrossProfit	199492000	USD
CY2021Q3	us-gaap	Gross Profit GrossProfit	214572000	USD
CY2021Q2	us-gaap	Gross Profit GrossProfit	197396000	USD
CY2021Q1	us-gaap	Gross Profit GrossProfit	160466000	USD
CY2020Q4	us-gaap	Gross Profit GrossProfit	138083000	USD
CY2020Q3	us-gaap	Gross Profit GrossProfit	138831000	USD
CY2020Q2	us-gaap	Gross Profit GrossProfit	99902000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	124356000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	92797000	USD
CY2021Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	120107000	USD
CY2021Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	96257000	USD
CY2021Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	76481000	USD
CY2020Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	65014000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	64558000	USD
CY2020Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-11950000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	44750000	USD
	us-gaap	Profit Loss ProfitLoss	51944000	USD
CY2021Q3	us-gaap	Profit Loss ProfitLoss	92054000	USD
CY2021Q2	us-gaap	Profit Loss ProfitLoss	82095000	USD
CY2021Q1	us-gaap	Profit Loss ProfitLoss	57713000	USD
CY2020Q4	us-gaap	Profit Loss ProfitLoss	58977000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	55356000	USD
CY2020Q2	us-gaap	Profit Loss ProfitLoss	-8991000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	24644000	USD
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.11
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.74
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.34
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.35
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.41
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.27
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.37
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.01
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.08
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.69
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.30
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.32
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.39
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.25
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.37
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
	us-gaap	Pension Expense Reversal Of Expense Noncash PensionExpenseReversalOfExpenseNoncash	19900000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	4100000	USD
	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	3600000	USD
	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	700000	USD
	us-gaap	Restructuring Costs RestructuringCosts	200000	USD
	us-gaap	Increase Decrease In Coal Inventories IncreaseDecreaseInCoalInventories	200000	USD
CY2021Q3	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	2000000	USD
CY2021Q3	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	800000	USD
CY2021Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	100000	USD
CY2020Q4	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	700000	USD
CY2021Q2	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	500000	USD
CY2021Q2	us-gaap	Asset Impairment Charges AssetImpairmentCharges	500000	USD
CY2021Q1	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	1900000	USD
CY2021Q1	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	800000	USD
CY2021Q1	us-gaap	Restructuring Costs RestructuringCosts	400000	USD
CY2020Q4	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	800000	USD
CY2020Q3	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	1300000	USD
CY2020Q3	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	300000	USD
CY2020Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	100000	USD
CY2020Q2	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	33800000	USD
CY2020Q2	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	1800000	USD
CY2020Q2	us-gaap	Increase Decrease In Coal Inventories IncreaseDecreaseInCoalInventories	1800000	USD
CY2020Q2	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	200000	USD
CY2020Q2	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	100000	USD
CY2020Q1	us-gaap	Restructuring Costs RestructuringCosts	4000000	USD
CY2020Q1	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1200000	USD

Files In Submission

Name	View Source	Status
0000889331-22-000011-index-headers.html	Edgar Link	pending
0000889331-22-000011-index.html	Edgar Link	pending
0000889331-22-000011.txt	Edgar Link	pending
0000889331-22-000011-xbrl.zip	Edgar Link	pending
exhibit1073-creditagreemen.htm	Edgar Link	pending
exhibit1074-subsidiaryguar.htm	Edgar Link	pending
exhibit1075-subsidiaryguar.htm	Edgar Link	pending
exhibit1076-subsidiaryguar.htm	Edgar Link	pending
exhibit1077-outsidedirecto.htm	Edgar Link	pending
exhibit211-01012210k.htm	Edgar Link	pending
exhibit23-firstamendmentto.htm	Edgar Link	pending
exhibit231-01012210k.htm	Edgar Link	pending
exhibit311-01012210k.htm	Edgar Link	pending
exhibit312-01012210k.htm	Edgar Link	pending
exhibit321-01012210k.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
lfus-20220101.htm	Edgar Link	pending
lfus-20220101.xsd	Edgar Link	pending
lfus-20220101_cal.xml	Edgar Link	unprocessable
lfus-20220101_def.xml	Edgar Link	unprocessable
lfus-20220101_g1.jpg	Edgar Link	pending
lfus-20220101_htm.xml	Edgar Link	completed
lfus-20220101_lab.xml	Edgar Link	unprocessable
lfus-20220101_pre.xml	Edgar Link	unprocessable
MetaLinks.json	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
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

$LFUS
LITTELFUSE INC /DE Stock $lfus

2022 Q1 Form 10-K Financial Statement

#000088933122000011 Filed on February 17, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LFUS LITTELFUSE INC /DE Stock $lfus

2022 Q1 Form 10-K Financial Statement

#000088933122000011 Filed on February 17, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LFUS
LITTELFUSE INC /DE Stock $lfus