$LII
LENNOX INTERNATIONAL INC Stock $lii

$lii Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000106920221000007 Filed on February 16, 2021

Income Statement

Concept	2020 Q4	2020 Q3	2020 Q2
Revenue	$914.0M	$1.055B	$941.3M
YoY Change	3.28%	2.14%	-14.36%
Cost Of Revenue	$638.7M	$731.7M	$665.6M
YoY Change	0.25%	-0.39%	-13.22%
Gross Profit	$275.3M	$323.3M	$275.7M
YoY Change	11.1%	8.38%	-16.98%
Gross Profit Margin	30.12%	30.64%	29.29%
Selling, General & Admin	$143.2M	$151.8M	$129.5M
YoY Change	-0.76%	5.86%	-15.03%
% of Gross Profit	52.02%	46.95%	46.97%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$17.20M	$17.50M	$18.90M
YoY Change	-4.44%	-3.85%	13.17%
% of Gross Profit	6.25%	5.41%	6.86%
Operating Expenses	$140.0M	$151.8M	$129.5M
YoY Change	-5.15%	5.86%	-15.03%
Operating Profit	$135.3M	$167.1M	$136.0M
YoY Change	35.03%	6.57%	-36.39%
Interest Expense	-$700.0K	$6.500M	$6.900M
YoY Change	-90.41%	-48.0%	-47.33%
% of Operating Profit	-0.52%	3.89%	5.07%
Other Income/Expense, Net	-$1.100M	-$1.100M	-$1.100M
YoY Change	83.33%	83.33%	266.67%
Pretax Income	$131.5M	$159.2M	$128.0M
YoY Change	-7.0%	10.79%	-8.44%
Income Tax	$19.30M	$27.50M	$27.40M
% Of Pretax Income	14.68%	17.27%	21.41%
Net Earnings	$111.7M	$131.7M	$100.0M
YoY Change	-2.02%	14.82%	-9.67%
Net Earnings / Revenue	12.22%	12.48%	10.62%
Basic Earnings Per Share	$2.92	$3.44	$2.62
Diluted Earnings Per Share	$2.89	$3.42	$2.60
COMMON SHARES
Basic Shares Outstanding	38.29M shares	38.30M shares	38.20M shares
Diluted Shares Outstanding		38.60M shares	38.40M shares

Balance Sheet

Concept	2020 Q4	2020 Q3	2020 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$129.0M	$59.10M	$48.60M
YoY Change	220.9%	21.86%	27.23%
Cash & Equivalents	$123.9M	$55.00M	$44.80M
Short-Term Investments	$5.100M	$4.100M	$3.800M
Other Short-Term Assets	$70.90M	$53.50M	$54.40M
YoY Change	20.58%	-12.72%	-4.06%
Inventory	$439.4M	$408.7M	$499.7M
Prepaid Expenses
Receivables	$448.3M	$542.7M	$624.2M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.088B	$1.064B	$1.227B
YoY Change	-2.97%	-19.23%	-15.03%
LONG-TERM ASSETS
Property, Plant & Equipment	$464.3M	$444.9M	$441.2M
YoY Change	4.24%	6.23%	5.55%
Goodwill	$186.9M	$186.7M	$186.5M
YoY Change	0.21%	0.16%	-0.05%
Intangibles
YoY Change
Long-Term Investments	$37.00M
YoY Change	-4.15%
Other Assets	$86.10M	$74.40M	$77.10M
YoY Change	8.99%	3.62%	0.78%
Total Long-Term Assets	$944.9M	$917.2M	$897.4M
YoY Change	3.38%	2.19%	0.1%
TOTAL ASSETS
Total Short-Term Assets	$1.088B	$1.064B	$1.227B
Total Long-Term Assets	$944.9M	$917.2M	$897.4M
Total Assets	$2.033B	$1.981B	$2.124B
YoY Change	-0.12%	-10.55%	-9.23%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$340.3M	$361.0M	$295.0M
YoY Change	-8.62%	-8.14%	-37.71%
Accrued Expenses	$296.1M	$287.8M	$251.0M
YoY Change	15.8%	6.2%	4.24%
Deferred Revenue	$5.500M	$7.000M	$6.800M
YoY Change	-34.52%	-16.67%	38.78%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$9.900M	$9.600M	$8.500M
YoY Change	-96.92%	39.13%	28.79%
Total Short-Term Liabilities	$701.3M	$711.0M	$946.2M
YoY Change	-30.06%	-35.94%	-11.98%
LONG-TERM LIABILITIES
Long-Term Debt	$970.7M	$1.007B	$1.047B
YoY Change	14.29%	-4.75%	-9.4%
Other Long-Term Liabilities	$142.3M	$141.9M	$140.1M
YoY Change	5.64%	9.24%	7.85%
Total Long-Term Liabilities	$142.3M	$141.9M	$140.1M
YoY Change	5.64%	9.24%	7.85%
TOTAL LIABILITIES
Total Short-Term Liabilities	$701.3M	$711.0M	$946.2M
Total Long-Term Liabilities	$142.3M	$141.9M	$140.1M
Total Liabilities	$2.050B	$2.097B	$2.353B
YoY Change	-7.05%	-15.86%	-8.0%
SHAREHOLDERS EQUITY
Retained Earnings	$2.386B	$2.304B	$2.202B
YoY Change	11.03%	11.59%	11.22%
Common Stock	$1.114B	$1.110B	$1.103B
YoY Change	1.8%	1.78%	1.53%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$3.420B	$3.415B	$3.412B
YoY Change	3.33%	3.31%	8.18%
Treasury Stock Shares	48.82M shares	48.88M shares	48.92M shares
Shareholders Equity	-$17.10M	-$115.7M	-$228.9M
YoY Change
Total Liabilities & Shareholders Equity	$2.033B	$1.981B	$2.124B
YoY Change	-0.12%	-10.55%	-9.23%

Cashflow Statement

Concept	2020 Q4	2020 Q3	2020 Q2
OPERATING ACTIVITIES
Net Income	$111.7M	$131.7M	$100.0M
YoY Change	-2.02%	14.82%	-9.67%
Depreciation, Depletion And Amortization	$17.20M	$17.50M	$18.90M
YoY Change	-4.44%	-3.85%	13.17%
Cash From Operating Activities	$166.2M	$439.7M	$105.3M
YoY Change	-38.81%	86.71%	251.0%
INVESTING ACTIVITIES
Capital Expenditures	-$22.60M	-$12.40M	-$18.80M
YoY Change	-20.98%	-47.23%	15.34%
Acquisitions
YoY Change
Other Investing Activities	-$600.0K	$200.0K	$200.0K
YoY Change	-100.89%	-113.33%	-95.65%
Cash From Investing Activities	-$23.20M	-$12.20M	-$18.60M
YoY Change	-159.49%	-51.2%	58.97%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-76.80M	-417.3M	-80.70M
YoY Change	-76.04%	108.86%	578.15%
NET CHANGE
Cash From Operating Activities	166.2M	439.7M	105.3M
Cash From Investing Activities	-23.20M	-12.20M	-18.60M
Cash From Financing Activities	-76.80M	-417.3M	-80.70M
Net Change In Cash	66.20M	10.20M	6.000M
YoY Change	-762.0%	-4.67%	-6.25%
FREE CASH FLOW
Cash From Operating Activities	$166.2M	$439.7M	$105.3M
Capital Expenditures	-$22.60M	-$12.40M	-$18.80M
Free Cash Flow	$188.8M	$452.1M	$124.1M
YoY Change	-37.11%	74.56%	168.03%

Facts In Submission

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CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	lii	Minimum Product Warranties MinimumProductWarranties	P1Y
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-15149
CY2020	dei	Entity Registrant Name EntityRegistrantName	LENNOX INTERNATIONAL INC.
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	42-0991521
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	2140 Lake Park Blvd
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CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
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CY2020	dei	Security12b Title Security12bTitle	Common stock, $0.01 par value per share
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CY2018	us-gaap	Net Income Loss NetIncomeLoss	359000000.0	USD
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	9.32
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	10.49
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	8.87
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.02
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.03
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	9.30
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	10.49
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.84
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	9.26
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	10.38
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	8.77
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.02
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.03
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	9.24
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	10.38
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.74
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	38300000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39000000.0	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	40600000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	38600000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39400000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41100000	shares
CY2020	us-gaap	Net Income Loss NetIncomeLoss	356300000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	359000000.0	USD
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	800000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	3700000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	-16900000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax	-2100000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax	-27900000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	8700000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	7100000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	14200000	USD
CY2020	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPortionAttributableToParent	7000000.0	USD
CY2019	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPortionAttributableToParent	1300000	USD
CY2018	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPortionAttributableToParent	-13600000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-5900000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-5700000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-9300000	USD
CY2020	lii	Noncashpensionsettlementloss Noncashpensionsettlementloss	600000	USD
CY2019	lii	Noncashpensionsettlementloss Noncashpensionsettlementloss	99200000	USD
CY2018	lii	Noncashpensionsettlementloss Noncashpensionsettlementloss	400000	USD
CY2020	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	0	USD
CY2019	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	0	USD
CY2018	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-1800000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-3700000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-6900000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	6100000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	8100000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	111800000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-15000000.0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	1500000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	26800000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	16400000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	6600000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	85000000.0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-31400000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	362900000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	493700000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	327600000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	50100000	USD
CY2018	lii	Cumulative Effect Period Of Adoption CumulativeEffectPeriodOfAdoption	-6200000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	359000000.0	USD
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.43
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	98200000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	11000000.0	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	1600000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	2800000	USD
CY2018	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	0	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	26300000	USD
CY2018	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	4700000	USD
CY2018	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	-15100000	USD
CY2018	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	3400000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	477100000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	-149600000	USD
CY2019	lii	Cumulative Effect Period Of Adoption CumulativeEffectPeriodOfAdoption	-300000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	408700000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.95
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	114700000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	5800000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	24800000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-73000000.0	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	21300000	USD
CY2019	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	2000000.0	USD
CY2019	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	6200000	USD
CY2019	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	3400000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	424000000.0	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	-170200000	USD
CY2020	lii	Cumulative Effect Period Of Adoption CumulativeEffectPeriodOfAdoption	-1300000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	356300000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.08
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	117900000	USD
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	800000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-1000000.0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	1200000	USD
CY2020	us-gaap	Oci Equity Method Investment After Tax OciEquityMethodInvestmentAfterTax	-1200000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	24300000	USD
CY2020	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	2500000	USD
CY2020	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	8200000	USD
CY2020	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	3000000.0	USD
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	117900000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	-17100000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	356300000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	408700000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	359000000.0	USD
CY2020	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	0	USD
CY2019	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	-10600000	USD
CY2018	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	-27000000.0	USD
CY2020	lii	Net Lossgainfromnaturaldisaster NetLossgainfromnaturaldisaster	0	USD
CY2019	lii	Net Lossgainfromnaturaldisaster NetLossgainfromnaturaldisaster	-79600000	USD
CY2018	lii	Net Lossgainfromnaturaldisaster NetLossgainfromnaturaldisaster	-10900000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	15600000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	13400000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	12000000.0	USD
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	12300000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	12300000	USD
CY2018	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	9600000	USD
CY2020	us-gaap	Restructuring Costs RestructuringCosts	3400000	USD
CY2019	us-gaap	Restructuring Costs RestructuringCosts	6800000	USD
CY2018	us-gaap	Restructuring Costs RestructuringCosts	1300000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	8100000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	4500000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	4700000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-300000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	500000	USD
CY2018	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-1300000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	24300000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	21300000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	26300000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	72600000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	71100000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	66000000.0	USD
CY2020	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	7200000	USD
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	16600000	USD
CY2018	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	25200000	USD
CY2020	us-gaap	Pension Expense PensionExpense	10500000	USD
CY2019	us-gaap	Pension Expense PensionExpense	106100000	USD
CY2018	us-gaap	Pension Expense PensionExpense	8800000	USD
CY2020	us-gaap	Pension Contributions PensionContributions	3300000	USD
CY2019	us-gaap	Pension Contributions PensionContributions	1800000	USD
CY2018	us-gaap	Pension Contributions PensionContributions	20600000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-200000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	400000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-5100000	USD
CY2020	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	-26500000	USD
CY2019	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	33100000	USD
CY2018	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	9900000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-110300000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	63900000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	84200000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-5300000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-2800000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	200000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-31700000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-56100000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	102200000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	35400000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-5600000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	5900000	USD
CY2020	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	-5700000	USD
CY2019	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	-1900000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	-5500000	USD
CY2020	lii	Increase Decreasein Operatingleaseassetandliabilitynet IncreaseDecreaseinOperatingleaseassetandliabilitynet	-2100000	USD
CY2019	lii	Increase Decreasein Operatingleaseassetandliabilitynet IncreaseDecreaseinOperatingleaseassetandliabilitynet	-2100000	USD
CY2018	lii	Increase Decreasein Operatingleaseassetandliabilitynet IncreaseDecreaseinOperatingleaseassetandliabilitynet	0	USD
CY2020	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	6100000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	10500000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	3600000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	612400000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	396100000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	495500000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1000000.0	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1300000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	100000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	78500000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	105600000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	95200000	USD
CY2020	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	2200000	USD
CY2019	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	2900000	USD
CY2018	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	0	USD
CY2020	us-gaap	Proceeds From Divestiture Of Interest In Consolidated Subsidiaries ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries	0	USD
CY2019	us-gaap	Proceeds From Divestiture Of Interest In Consolidated Subsidiaries ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries	43500000	USD
CY2018	us-gaap	Proceeds From Divestiture Of Interest In Consolidated Subsidiaries ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries	114700000	USD
CY2020	lii	Insurancerecoveriesreceivedforpropertydamageincurredfromnaturaldisaster Insurancerecoveriesreceivedforpropertydamageincurredfromnaturaldisaster	0	USD
CY2019	lii	Insurancerecoveriesreceivedforpropertydamageincurredfromnaturaldisaster Insurancerecoveriesreceivedforpropertydamageincurredfromnaturaldisaster	79600000	USD
CY2018	lii	Insurancerecoveriesreceivedforpropertydamageincurredfromnaturaldisaster Insurancerecoveriesreceivedforpropertydamageincurredfromnaturaldisaster	10900000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-79700000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	15900000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	30500000	USD
CY2020	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	4600000	USD
CY2019	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	5300000	USD
CY2018	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	40300000	USD
CY2020	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	4600000	USD
CY2019	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	5300000	USD
CY2018	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	40300000	USD
CY2020	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	91000000.0	USD
CY2019	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	184500000	USD
CY2018	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	155000000.0	USD
CY2020	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	376000000.0	USD
CY2019	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	167500000	USD
CY2018	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	163000000.0	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	600000000.0	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	10800000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	6400000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3000000.0	USD
CY2020	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	1576000000.0	USD
CY2019	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	2367000000.0	USD
CY2018	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	2435900000	USD
CY2020	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	2081500000	USD
CY2019	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	2269500000	USD
CY2018	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	2395000000.0	USD
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	7500000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	300000	USD
CY2018	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	0	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	3000000.0	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	3300000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	3300000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	100000000.0	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	400000000.0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	450200000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	17900000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	24000000.0	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	26900000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	118100000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	110500000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	93900000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-441800000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-423400000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-537800000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	90900000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-11400000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-11800000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-4300000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2400000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-10100000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	37300000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	46300000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	68200000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	123900000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	37300000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	46300000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	25300000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	46800000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	38700000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	90300000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	83000000.0	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	90000000.0	USD
CY2020	us-gaap	Insurance Recoveries InsuranceRecoveries	0	USD
CY2019	us-gaap	Insurance Recoveries InsuranceRecoveries	243200000	USD
CY2018	us-gaap	Insurance Recoveries InsuranceRecoveries	124300000	USD
CY2020	us-gaap	Nature Of Operations NatureOfOperations	ennox International Inc., a Delaware corporation, through its subsidiaries (referred to herein as “we,” “our,” “us,” “LII,” or the “Company”), is a leading global provider of climate control solutions. We design, manufacture, market and service a broad range of products for the heating, ventilation, air conditioning and refrigeration (“HVACR”) markets and sell our products and services through a combination of direct sales, distributors and company-owned parts and supplies stores. We operate in three reportable business segments: Residential Heating & Cooling, Commercial Heating & Cooling, and Refrigeration. See Note 3 for financial information regarding our reportable segments.
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	Segment
CY2020Q4	us-gaap	Lifo Inventory Amount LIFOInventoryAmount	280500000	USD
CY2019Q4	us-gaap	Lifo Inventory Amount LIFOInventoryAmount	360700000	USD
CY2020	lii	Maximum Product Warranties MaximumProductWarranties	P20Y
CY2020	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></div><div style="text-align:justify;text-indent:13.5pt"><span><br/></span></div><div style="text-align:justify;text-indent:13.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements requires us to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities, and reported amounts of revenue and expenses. Such estimates include the valuation of accounts receivable, inventories, goodwill, intangible assets and other long-lived assets, contingencies, product warranties, guarantee obligations, indemnifications, and assumptions used in the calculation of income taxes, pension and post-retirement medical benefits, and stock-based compensation among others. These estimates and assumptions are based on our best estimates and judgment. </span></div><div style="text-align:justify;text-indent:13.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">We evaluate these estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. We believe these estimates and assumptions to be reasonable under the circumstances and will adjust such estimates and assumptions when facts and circumstances dictate. Volatile equity, foreign currency and commodity markets and uncertain future economic conditions combine to increase the uncertainty inherent in such estimates and assumptions. Future events and their effects cannot be determined with precision and actual results could differ significantly from these estimates. Changes in these estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods. </span></div><div style="text-align:justify;text-indent:13.5pt"><span><br/></span></div><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%">Impact of COVID-19 Pandemic</span></div><div style="text-align:justify;text-indent:13.5pt"><span><br/></span></div><div style="text-align:justify;text-indent:13.5pt"><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">COVID-19 surfaced in late 2019 and has spread around the world, including to the United States. In March 2020, the World Health Organization declared COVID-19 a pandemic. The COVID-19 pandemic has disrupted our business operations and caused a significant unfavorable impact on our results of operations. </span></div><div style="text-align:justify;text-indent:13.5pt"><span><br/></span></div><div style="text-align:justify;text-indent:13.5pt"><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">In response to the COVID-19 pandemic, various national, state, and local governments where we, our suppliers, and our customers operate issued decrees prohibiting certain businesses from continuing to operate and certain classes of workers from reporting to work. Those decrees have resulted in supply chain disruption and higher employee absenteeism in our factories. Additionally, certain of our manufacturing facilities experienced short-term suspensions of operations for COVID-19 employee health concerns.</span></div><div style="text-align:justify;text-indent:13.5pt"><span><br/></span></div><div style="text-align:justify;text-indent:13.5pt"><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">As the COVID-19 pandemic continues, health concern risks remain, and we cannot predict whether any of our manufacturing, operational or distribution facilities will experience disruptions, or how long such disruptions would last. It also remains unclear how various national, state, and local governments will react if the distribution of vaccines is slower than expected. If the COVID-19 pandemic worsens or the pandemic continues longer than presently expected, COVID 19 would continue to impact our results of operations, financial position and cash flows.</span></div>
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	Segment
CY2020	us-gaap	Revenues Revenues	3634100000	USD
CY2019	us-gaap	Revenues Revenues	3807200000	USD
CY2018	us-gaap	Revenues Revenues	3883900000	USD
CY2020	lii	Segment Profit And Loss SegmentProfitAndLoss	506700000	USD
CY2019	lii	Segment Profit And Loss SegmentProfitAndLoss	608900000	USD
CY2018	lii	Segment Profit And Loss SegmentProfitAndLoss	540600000	USD
CY2020	lii	Specialinventorywritedown Specialinventorywritedown	-1000000.0	USD
CY2019	lii	Specialinventorywritedown Specialinventorywritedown	600000	USD
CY2018	lii	Specialinventorywritedown Specialinventorywritedown	0	USD
CY2020	lii	Special Product Quality Adjustment SpecialProductQualityAdjustment	0	USD
CY2019	lii	Special Product Quality Adjustment SpecialProductQualityAdjustment	0	USD
CY2018	lii	Special Product Quality Adjustment SpecialProductQualityAdjustment	200000	USD
CY2020	lii	Gain Losson Dispositionof Businessand Related Property GainLossonDispositionofBusinessandRelatedProperty	0	USD
CY2019	lii	Gain Losson Dispositionof Businessand Related Property GainLossonDispositionofBusinessandRelatedProperty	-10600000	USD
CY2018	lii	Gain Losson Dispositionof Businessand Related Property GainLossonDispositionofBusinessandRelatedProperty	-27000000.0	USD
CY2020	lii	Lossgainfromnaturaldisasternetof Insurancerecoveries LossgainfromnaturaldisasternetofInsurancerecoveries	3100000	USD
CY2019	lii	Net Lossgainfromnaturaldisaster NetLossgainfromnaturaldisaster	-79600000	USD
CY2018	lii	Net Lossgainfromnaturaldisaster NetLossgainfromnaturaldisaster	-10900000	USD
CY2020	lii	Segment Reporting Reconciling Item In Losses And Other Expenses From Segment To Consolidated Amount SegmentReportingReconcilingItemInLossesAndOtherExpensesFromSegmentToConsolidatedAmount	-13300000	USD
CY2019	lii	Segment Reporting Reconciling Item In Losses And Other Expenses From Segment To Consolidated Amount SegmentReportingReconcilingItemInLossesAndOtherExpensesFromSegmentToConsolidatedAmount	-11300000	USD
CY2018	lii	Segment Reporting Reconciling Item In Losses And Other Expenses From Segment To Consolidated Amount SegmentReportingReconcilingItemInLossesAndOtherExpensesFromSegmentToConsolidatedAmount	-11400000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	10800000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	10300000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	3000000.0	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	478500000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	656900000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	509900000	USD
CY2020	lii	Revenue From Transactions With Major Customers RevenueFromTransactionsWithMajorCustomers	0	USD
CY2018	lii	Minimum Percentage Of Consolidated Net Sales From Single Customer MinimumPercentageOfConsolidatedNetSalesFromSingleCustomer	0.10
CY2019	lii	Minimum Percentage Of Consolidated Net Sales From Single Customer MinimumPercentageOfConsolidatedNetSalesFromSingleCustomer	0.10
CY2020	lii	Minimum Percentage Of Consolidated Net Sales From Single Customer MinimumPercentageOfConsolidatedNetSalesFromSingleCustomer	0.10
CY2020Q4	us-gaap	Assets Assets	2032500000	USD
CY2019Q4	us-gaap	Assets Assets	2034900000	USD
CY2018Q4	us-gaap	Assets Assets	1817200000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	78500000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	105600000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	95200000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	72600000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	71100000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	66000000.0	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	15600000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	13400000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	12000000.0	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	464300000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	445400000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	408300000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	356300000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	408700000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	359000000.0	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-800000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-100000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-1300000	USD
CY2020	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	357100000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	408800000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	360300000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	38300000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39000000.0	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	40600000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	300000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	400000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	500000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	38600000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39400000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41100000	shares
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	9.32
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	10.49
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	8.87
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.02
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.03
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	9.30
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	10.49
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.84
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	9.26
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	10.38
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	8.77
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.02
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.03
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	9.24
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	10.38
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.74
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	10300000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	7600000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	700000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	900000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	62700000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	59700000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	4000000.0	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	4300000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	20300000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	19900000	USD
CY2020	us-gaap	Lease Cost LeaseCost	98000000.0	USD
CY2019	us-gaap	Lease Cost LeaseCost	92400000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	61600000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	58100000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	10800000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	6400000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	15400000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	13400000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	67600000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	51500000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	33600000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	28400000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	194400000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	181600000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	10100000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	7800000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	29300000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	25900000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	55000000.0	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	52700000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	142800000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	131000000.0	USD
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P4Y3M18D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P4Y10M24D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y4M24D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y6M
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0191
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0271
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0281
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0369
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	59800000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	10500000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	50800000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	8700000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	43300000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	5800000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	26300000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	2600000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	13400000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	800000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	16800000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	11800000	USD
CY2020Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	210400000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	40200000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	12600000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	800000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	197800000	USD
CY2020Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	39400000	USD
CY2019Q1	lii	Area Of Leased Office Building AreaOfLeasedOfficeBuilding	192000	sqft
CY2019Q1	lii	Purchase Price Of Property At End Of Lease Term PurchasePriceOfPropertyAtEndOfLeaseTerm	41200000	USD
CY2019Q1	lii	Purchase Price Of Property At End Of Lease Term PurchasePriceOfPropertyAtEndOfLeaseTerm	41200000	USD
CY2019Q1	lii	Percentage Of Lease Balance As Final Payment End Of Lease Term PercentageOfLeaseBalanceAsFinalPaymentEndOfLeaseTerm	0.87
CY2019Q1	lii	Debtinstrument Covenantfordebtnotpaid DebtinstrumentCovenantfordebtnotpaid	75000000	USD
CY2020Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	37700000	USD
CY2019Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	38200000	USD
CY2020Q4	us-gaap	Product Warranty Accrual Noncurrent ProductWarrantyAccrualNoncurrent	82100000	USD
CY2019Q4	us-gaap	Product Warranty Accrual Noncurrent ProductWarrantyAccrualNoncurrent	74600000	USD
CY2020Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	119800000	USD
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	112800000	USD
CY2018Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	111600000	USD
CY2019	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	34900000	USD
CY2019	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	44100000	USD
CY2019	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	-7600000	USD
CY2019	us-gaap	Standard And Extended Product Warranty Accrual Foreign Currency Translation Gain Loss StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss	0	USD
CY2019	lii	Standardand Extended Product Warranty Accrual Divestitureof Businesses StandardandExtendedProductWarrantyAccrualDivestitureofBusinesses	400000	USD
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	112800000	USD
CY2020	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	35500000	USD
CY2020	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	41700000	USD
CY2020	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	200000	USD
CY2020	us-gaap	Standard And Extended Product Warranty Accrual Foreign Currency Translation Gain Loss StandardAndExtendedProductWarrantyAccrualForeignCurrencyTranslationGainLoss	600000	USD
CY2020Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	119800000	USD
CY2020Q4	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	3600000	USD
CY2019Q4	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	5200000	USD
CY2020Q4	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	16000000.0	USD
CY2019Q4	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	19400000	USD
CY2020Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	19600000	USD
CY2019Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	24600000	USD
CY2020	us-gaap	Liability For Asbestos And Environmental Claims Net Incurred Loss1 LiabilityForAsbestosAndEnvironmentalClaimsNetIncurredLoss1	5600000	USD
CY2019	us-gaap	Liability For Asbestos And Environmental Claims Net Incurred Loss1 LiabilityForAsbestosAndEnvironmentalClaimsNetIncurredLoss1	3100000	USD
CY2018	us-gaap	Liability For Asbestos And Environmental Claims Net Incurred Loss1 LiabilityForAsbestosAndEnvironmentalClaimsNetIncurredLoss1	4000000.0	USD
CY2020	lii	Lossgainfromnaturaldisasternetof Insurancerecoveries LossgainfromnaturaldisasternetofInsurancerecoveries	3100000	USD
CY2019	lii	Lossgainfromnaturaldisasternetof Insurancerecoveries LossgainfromnaturaldisasternetofInsurancerecoveries	-178800000	USD
CY2018	lii	Lossgainfromnaturaldisasternetof Insurancerecoveries LossgainfromnaturaldisasternetofInsurancerecoveries	-38300000	USD
	us-gaap	Insurance Recoveries InsuranceRecoveries	367500000	USD
CY2020Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	3000000000	USD
CY2019Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	500000000	USD
CY2020Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	446000000	USD
CY2020Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	100000000.0	USD
CY2020Q4	us-gaap	Restructuring And Related Cost Cost Incurred To Date1 RestructuringAndRelatedCostCostIncurredToDate1	15400000	USD
CY2020Q1	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	400000	shares
CY2020	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	100000	shares
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	17900000	USD
CY2019	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	100000	shares
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	24000000.0	USD
CY2018	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	100000	shares
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	26900000	USD
CY2019	lii	Gain Losson Dispositionof Businessand Related Property GainLossonDispositionofBusinessandRelatedProperty	-10600000	USD
CY2018	lii	Gain Losson Dispositionof Businessand Related Property GainLossonDispositionofBusinessandRelatedProperty	-27000000.0	USD
CY2020	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	10800000	USD
CY2020Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	207800000	USD
CY2019Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	198800000	USD
CY2020Q4	us-gaap	Inventory Gross InventoryGross	494400000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	5900000	USD
CY2020Q4	us-gaap	Restructuring And Related Cost Expected Cost1 RestructuringAndRelatedCostExpectedCost1	16600000	USD
CY2020	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	10800000	USD
CY2020Q4	us-gaap	Restructuring And Related Cost Cost Incurred To Date1 RestructuringAndRelatedCostCostIncurredToDate1	15400000	USD
CY2020Q4	us-gaap	Restructuring And Related Cost Expected Cost1 RestructuringAndRelatedCostExpectedCost1	16600000	USD
CY2020	us-gaap	Revenues Revenues	3634100000	USD
CY2019	us-gaap	Revenues Revenues	3807200000	USD
CY2018	us-gaap	Revenues Revenues	3883900000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	5500000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	8400000	USD
CY2020	lii	Contractwith Customer Liability Current Net Changein Timeframe Performance Obligation Satisfied Revenue Recognized ContractwithCustomerLiabilityCurrentNetChangeinTimeframePerformanceObligationSatisfiedRevenueRecognized	2900000	USD
CY2020	lii	Contractwith Customer Liability Current Net Changein Timeframe Performance Obligation Satisfied Revenue Recognized Percent ContractwithCustomerLiabilityCurrentNetChangeinTimeframePerformanceObligationSatisfiedRevenueRecognizedPercent	-0.352
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	5600000	USD
CY2020Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	6500000	USD
CY2019Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	6000000.0	USD
CY2020	lii	Contractwith Customer Liability Noncurrent Net Changein Timeframe Performance Obligation Satisfied Revenue Recognized ContractwithCustomerLiabilityNoncurrentNetChangeinTimeframePerformanceObligationSatisfiedRevenueRecognized	300000	USD
CY2020	lii	Contractwith Customer Liability Noncurrent Net Changein Timeframe Performance Obligation Satisfied Revenue Recognized Percent ContractwithCustomerLiabilityNoncurrentNetChangeinTimeframePerformanceObligationSatisfiedRevenueRecognizedPercent	-0.051
CY2020Q4	lii	Contractwith Customer Asset Liability Net ContractwithCustomerAssetLiabilityNet	-11100000	USD
CY2019Q4	lii	Contractwith Customer Asset Liability Net ContractwithCustomerAssetLiabilityNet	-14300000	USD
CY2020	lii	Contractwith Customer Asset Liability Changein Timeframe Performance Obligation Satisfied Revenue Recognized ContractwithCustomerAssetLiabilityChangeinTimeframePerformanceObligationSatisfiedRevenueRecognized	3200000	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	7200000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	3300000	USD
CY2018	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	4800000	USD
CY2020Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	280100000	USD
CY2019Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	402900000	USD
CY2019Q4	us-gaap	Inventory Gross InventoryGross	607700000	USD
CY2020Q4	us-gaap	Inventory Lifo Reserve InventoryLIFOReserve	55000000.0	USD
CY2019Q4	us-gaap	Inventory Lifo Reserve InventoryLIFOReserve	63600000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	439400000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	544100000	USD
CY2020	us-gaap	Effect Of Lifo Inventory Liquidation On Income EffectOfLIFOInventoryLiquidationOnIncome	700000	USD
CY2019	us-gaap	Effect Of Lifo Inventory Liquidation On Income EffectOfLIFOInventoryLiquidationOnIncome	200000	USD
CY2018	us-gaap	Effect Of Lifo Inventory Liquidation On Income EffectOfLIFOInventoryLiquidationOnIncome	0	USD
CY2020	lii	Reservebalanceobsoleteandslowmovinginventories Reservebalanceobsoleteandslowmovinginventories	24600000	USD
CY2019	lii	Reservebalanceobsoleteandslowmovinginventories Reservebalanceobsoleteandslowmovinginventories	19200000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	186600000	USD
CY2018	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	0	USD
CY2018	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-100000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	186500000	USD
CY2020	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	400000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	186900000	USD
CY2018Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	32700000	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	11500000	USD
CY2020Q4	us-gaap	Land Land	24000000.0	USD
CY2019Q4	us-gaap	Land Land	23700000	USD
CY2020Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	266100000	USD
CY2019Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	242900000	USD
CY2020Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	928000000.0	USD
CY2019Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	883400000	USD
CY2020Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	57100000	USD
CY2019Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	47200000	USD
CY2020Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	69700000	USD
CY2019Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	72500000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1344900000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1269700000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	880600000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	824300000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	464300000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	445400000	USD
CY2020	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	0	USD
CY2018	lii	Writeoffofpropertyplantandequipment Writeoffofpropertyplantandequipment	4000000	USD
CY2020Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	96600000	USD
CY2019Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	70400000	USD
CY2020Q4	us-gaap	Accrued Exchange Fee Rebate Current AccruedExchangeFeeRebateCurrent	81900000	USD
CY2019Q4	us-gaap	Accrued Exchange Fee Rebate Current AccruedExchangeFeeRebateCurrent	70100000	USD
CY2020Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	37700000	USD
CY2019Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	38200000	USD
CY2020Q4	us-gaap	Sales And Excise Tax Payable Current SalesAndExciseTaxPayableCurrent	20300000	USD
CY2019Q4	us-gaap	Sales And Excise Tax Payable Current SalesAndExciseTaxPayableCurrent	18600000	USD
CY2020Q4	us-gaap	Liability For Asbestos And Environmental Claims Gross LiabilityForAsbestosAndEnvironmentalClaimsGross	10100000	USD
CY2019Q4	us-gaap	Liability For Asbestos And Environmental Claims Gross LiabilityForAsbestosAndEnvironmentalClaimsGross	10200000	USD
CY2020Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	5500000	USD
CY2019Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	8400000	USD
CY2020Q4	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	3600000	USD
CY2019Q4	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	5200000	USD
CY2020Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	2200000	USD
CY2019Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	2900000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	38200000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	31700000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	296100000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	255700000	USD
CY2020	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	66800000	USD
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	69900000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	72200000	USD
CY2020	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	26500000	USD
CY2019	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	43700000	USD
CY2018	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	42500000	USD
CY2020	us-gaap	Cooperative Advertising Expense CooperativeAdvertisingExpense	22200000	USD
CY2019	us-gaap	Cooperative Advertising Expense CooperativeAdvertisingExpense	21300000	USD
CY2018	us-gaap	Cooperative Advertising Expense CooperativeAdvertisingExpense	16800000	USD
CY2020	us-gaap	Interest Expense Other InterestExpenseOther	29700000	USD
CY2019	us-gaap	Interest Expense Other InterestExpenseOther	48600000	USD
CY2018	us-gaap	Interest Expense Other InterestExpenseOther	39100000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	1400000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	1100000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	800000	USD
CY2020	us-gaap	Interest Expense InterestExpense	28300000	USD
CY2019	us-gaap	Interest Expense InterestExpense	47500000	USD
CY2018	us-gaap	Interest Expense InterestExpense	38300000	USD
CY2020	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-100000	USD
CY2019	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-400000	USD
CY2018	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	400000	USD
CY2019	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	5700000	USD
CY2018	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	2200000	USD
CY2020	lii	Contractor Tax Payments ContractorTaxPayments	8300000	USD
CY2019	lii	Contractor Tax Payments ContractorTaxPayments	0	USD
CY2018	lii	Contractor Tax Payments ContractorTaxPayments	0	USD
CY2020	us-gaap	Other Expenses OtherExpenses	0	USD
CY2019	us-gaap	Other Expenses OtherExpenses	1800000	USD
CY2018	us-gaap	Other Expenses OtherExpenses	1800000	USD
CY2020	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-7400000	USD
CY2019	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-8300000	USD
CY2018	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-13400000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	17800000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	19100000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	18800000	USD
CY2019Q2	lii	Transferofpensionplanassettolifeinsurancecompany Transferofpensionplanassettolifeinsurancecompany	100000000	USD
CY2019Q2	lii	Transferofpensionplanobligationto Life Insurancecompany TransferofpensionplanobligationtoLifeInsurancecompany	105600000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	3600000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	1500000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1700000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	200000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	200000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-700000	USD
CY2020	us-gaap	Other Operating Income OtherOperatingIncome	2200000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	300000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	500000	USD
CY2018	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-1500000	USD
CY2020	lii	Liabilityfor Asbestosand Environmental Claims Net Expense LiabilityforAsbestosandEnvironmentalClaimsNetExpense	5600000	USD
CY2019	lii	Liabilityfor Asbestosand Environmental Claims Net Expense LiabilityforAsbestosandEnvironmentalClaimsNetExpense	3100000	USD
CY2018	lii	Liabilityfor Asbestosand Environmental Claims Net Expense LiabilityforAsbestosandEnvironmentalClaimsNetExpense	4000000.0	USD
CY2020	us-gaap	Loss Contingency Damages Sought Value LossContingencyDamagesSoughtValue	1100000	USD
CY2019	us-gaap	Loss Contingency Damages Sought Value LossContingencyDamagesSoughtValue	1200000	USD
CY2018	us-gaap	Loss Contingency Damages Sought Value LossContingencyDamagesSoughtValue	1900000	USD
CY2020	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	-1400000	USD
CY2019Q2	lii	Noncashpensionsettlementloss Noncashpensionsettlementloss	60600000	USD
CY2019Q2	lii	Reclassificationpensionbenefitobligationsto Aocl ReclassificationpensionbenefitobligationstoAOCL	5600000	USD
CY2019Q4	lii	Transferofpensionplanassettolifeinsurancecompany Transferofpensionplanassettolifeinsurancecompany	73500000	USD
CY2019Q4	lii	Transferofpensionplanobligationto Life Insurancecompany TransferofpensionplanobligationtoLifeInsurancecompany	77900000	USD
CY2019Q4	lii	Noncashpensionsettlementloss Noncashpensionsettlementloss	-38600000	USD
CY2019Q4	lii	Reclassificationpensionbenefitobligationsto Aocl ReclassificationpensionbenefitobligationstoAOCL	4400000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	236600000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	204500000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	233300000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	200500000	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	135200000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	113900000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	55900000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear	0.0600
CY2019Q4	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear	0.0650
CY2020Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.0500
CY2019Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.0500
CY2020	us-gaap	Defined Benefit Plan Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate	2023
CY2019	us-gaap	Defined Benefit Plan Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate	2022
CY2020Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1.000
CY2019Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1.000
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	179700000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	154300000	USD
CY2020Q4	lii	Numberof Joint Ventures NumberofJointVentures	2	joint_venture
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	37000000.0	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	38600000	USD
CY2020	us-gaap	Related Party Transaction Purchases From Related Party RelatedPartyTransactionPurchasesFromRelatedParty	123100000	USD
CY2019	us-gaap	Related Party Transaction Purchases From Related Party RelatedPartyTransactionPurchasesFromRelatedParty	123100000	USD
CY2018	us-gaap	Related Party Transaction Purchases From Related Party RelatedPartyTransactionPurchasesFromRelatedParty	103100000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	61700000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	7500000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1500000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	7100000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	800000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	59500000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	14100000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	14200000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	17800000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	4800000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	9300000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	4600000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	80600000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	79400000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	81900000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-700000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	15000000.0	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	23200000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1100000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	3900000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1000000.0	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	19700000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	25700000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	88100000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	99100000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	107600000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	268400000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	383200000	USD
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CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	99100000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-20700000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-3200000	USD
CY2020	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	9200000	USD
CY2019	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	8300000	USD
CY2018	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	3900000	USD
CY2020	lii	Globalintangiblelowtaxedincome Globalintangiblelowtaxedincome	10300000	USD
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CY2020	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	700000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-800000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	1900000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4200000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	10900000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	10500000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	1200000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	2600000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-1900000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	107600000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	29200000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Warranty Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves	27800000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	26800000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	23200000	USD
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CY2020Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	7300000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	5600000	USD
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CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	0	USD
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CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Legal Settlements DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLegalSettlements	10100000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Legal Settlements DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLegalSettlements	8500000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	11100000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	11400000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	8000000.0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	7100000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	131300000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	116900000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	37000000.0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	24900000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	94300000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	92000000.0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	58700000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	52500000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	15200000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	15100000	USD
CY2020Q4	us-gaap	Deferred Tax And Other Liabilities Noncurrent DeferredTaxAndOtherLiabilitiesNoncurrent	1000000.0	USD
CY2019Q4	us-gaap	Deferred Tax And Other Liabilities Noncurrent DeferredTaxAndOtherLiabilitiesNoncurrent	0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	6200000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2900000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	81100000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	70500000	USD
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CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	21500000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	0	USD
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CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	18600000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	14900000	USD
CY2020Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	10100000	USD
CY2019Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	7800000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	9900000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	321900000	USD
CY2020Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	29300000	USD
CY2019Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	25900000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Noncurrent Gross DeferredFinanceCostsNoncurrentGross	8600000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Noncurrent Gross DeferredFinanceCostsNoncurrentGross	2100000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	970700000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	849300000	USD
CY2020Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	980600000	USD
CY2019Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	1171200000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	0	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	0	USD
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CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	300000000.0	USD
CY2020Q4	lii	Maximum Securitization As Percentage Of Net Pool Balance MaximumSecuritizationAsPercentageOfNetPoolBalance	1
CY2020Q4	lii	Eligible Amount Available Under Asset Securitization EligibleAmountAvailableUnderAssetSecuritization	279100000	USD
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CY2019Q4	lii	Beneficial Interest Sold BeneficialInterestSold	285000000.0	USD
CY2020Q4	lii	Asset Securitization Borrowing Capacity AssetSecuritizationBorrowingCapacity	279100000	USD
CY2019Q4	lii	Asset Securitization Borrowing Capacity AssetSecuritizationBorrowingCapacity	35000000.0	USD
CY2020	lii	Program Fee ProgramFee	0.0070
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CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-103800000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-1100000	USD
CY2020	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-7700000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6600000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	111700000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-97200000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-188800000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-1100000	USD
CY2019	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-86100000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	85000000.0	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-103800000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	24300000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	21300000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	26300000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	1500000	shares
CY2020Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	100000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	1400000	shares
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CY2020Q4	lii	Undistributed And Vested Performance Share Units UndistributedAndVestedPerformanceShareUnits	44900	shares
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CY2020Q4	us-gaap	Gross Profit GrossProfit	275300000	USD
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CY2019Q4	us-gaap	Gross Profit GrossProfit	247800000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	165700000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	201600000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	12900000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	69300000	USD
CY2020Q2	us-gaap	Revenues Revenues	941300000	USD
CY2019Q2	us-gaap	Revenues Revenues	1099100000	USD
CY2020Q2	us-gaap	Gross Profit GrossProfit	275700000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	332100000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	100000000.0	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	110700000	USD
CY2020Q3	us-gaap	Revenues Revenues	1055000000.0	USD
CY2019Q3	us-gaap	Revenues Revenues	1032900000	USD
CY2020Q3	us-gaap	Gross Profit GrossProfit	323300000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	298300000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	131700000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	114700000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.34
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CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.64
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CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.94
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.77
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.77
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.92
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.96
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CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.93
CY2020Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.77
CY2019Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.77
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$LII
LENNOX INTERNATIONAL INC Stock $lii

2020 Q4 Form 10-K Financial Statement

#000106920221000007 Filed on February 16, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LII LENNOX INTERNATIONAL INC Stock $lii

2020 Q4 Form 10-K Financial Statement

#000106920221000007 Filed on February 16, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LII
LENNOX INTERNATIONAL INC Stock $lii