$LKQ
LKQ CORP Stock $lkq

$lkq Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000106569621000010 Filed on February 26, 2021

Income Statement

Concept	2019 Q4	2018 Q4	2018
Revenue	$3.010B	$3.003B	$11.88B
YoY Change	0.24%	21.58%	21.98%
Cost Of Revenue	$1.814B	$1.841B	$7.302B
YoY Change	-1.48%	20.94%	22.98%
Gross Profit	$1.196B	$1.162B	$4.575B
YoY Change	2.94%	22.6%	20.4%
Gross Profit Margin	39.74%	38.69%	38.52%
Selling, General & Admin	$893.3M	$880.6M	$3.353B
YoY Change	1.44%	23.63%	23.47%
% of Gross Profit	74.69%	75.8%	73.29%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$84.20M	$83.10M	$294.1M
YoY Change	1.32%	30.46%	27.75%
% of Gross Profit	7.04%	7.15%	6.43%
Operating Expenses	$970.8M	$958.5M	$3.353B
YoY Change	1.28%	24.05%	23.47%
Operating Profit	$225.2M	$203.3M	$882.2M
YoY Change	10.77%	21.05%	4.41%
Interest Expense	-$17.30M	-$38.70M	$146.4M
YoY Change	-55.3%	39.21%	-245.48%
% of Operating Profit	-7.68%	-19.04%	16.59%
Other Income/Expense, Net		-$2.600M	-$138.8M
YoY Change		-120.0%	77.12%
Pretax Income	$189.6M	$123.6M	$562.8M
YoY Change	53.4%	-17.71%	-2.15%
Income Tax	$50.20M	$35.00M	$191.4M
% Of Pretax Income	26.48%	28.32%	34.01%
Net Earnings	$140.4M	$36.00M	$480.1M
YoY Change	290.0%	-71.01%	-10.05%
Net Earnings / Revenue	4.66%	1.2%	4.04%
Basic Earnings Per Share			$1.53
Diluted Earnings Per Share	$456.9K	$113.0K	$1.52
COMMON SHARES
Basic Shares Outstanding	306.5M shares	318.2M shares	314.4M shares
Diluted Shares Outstanding			315.8M shares

Balance Sheet

Concept	2019 Q4	2018 Q4	2018
SHORT-TERM ASSETS
Cash & Short-Term Investments	$523.0M	$332.0M	$332.0M
YoY Change	57.53%	18.57%	18.57%
Cash & Equivalents	$528.4M	$331.8M	$332.0M
Short-Term Investments
Other Short-Term Assets	$261.0M	$199.0M	$199.0M
YoY Change	31.16%	48.51%	48.51%
Inventory	$2.773B	$2.836B	$2.836B
Prepaid Expenses
Receivables	$1.131B	$1.154B	$1.154B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$4.688B	$4.521B	$4.521B
YoY Change	3.69%	18.28%	18.29%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.234B	$1.220B	$1.220B
YoY Change	1.17%	33.63%	33.63%
Goodwill	$4.407B	$4.381B
YoY Change	0.57%	23.89%
Intangibles	$850.3M	$928.8M
YoY Change	-8.44%	24.87%
Long-Term Investments	$139.2M	$179.2M	$179.0M
YoY Change	-22.28%	-14.03%	-13.94%
Other Assets	$153.1M	$162.9M	$163.0M
YoY Change	-6.02%	13.95%	13.99%
Total Long-Term Assets	$8.092B	$6.872B	$6.872B
YoY Change	17.75%	23.95%	23.93%
TOTAL ASSETS
Total Short-Term Assets	$4.688B	$4.521B	$4.521B
Total Long-Term Assets	$8.092B	$6.872B	$6.872B
Total Assets	$12.78B	$11.39B	$11.39B
YoY Change	12.17%	21.64%	21.63%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$942.8M	$942.4M	$942.0M
YoY Change	0.04%	19.5%	19.39%
Accrued Expenses	$289.7M	$288.4M	$460.0M
YoY Change	0.44%	31.94%	27.07%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$326.0M	$122.0M	$122.0M
YoY Change	167.21%	-3.17%	-3.17%
Total Short-Term Liabilities	$2.179B	$1.690B	$1.690B
YoY Change	28.88%	27.79%	27.74%
LONG-TERM LIABILITIES
Long-Term Debt	$3.715B	$4.189B	$4.189B
YoY Change	-11.32%	27.79%	27.79%
Other Long-Term Liabilities	$365.7M	$364.2M	$364.0M
YoY Change	0.41%	18.43%	18.18%
Total Long-Term Liabilities	$365.7M	$364.2M	$4.553B
YoY Change	0.41%	18.43%	26.97%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.179B	$1.690B	$1.690B
Total Long-Term Liabilities	$365.7M	$364.2M	$4.553B
Total Liabilities	$2.544B	$2.055B	$6.611B
YoY Change	23.83%	26.03%	27.9%
SHAREHOLDERS EQUITY
Retained Earnings	$4.140B	$3.599B
YoY Change	15.04%	15.2%
Common Stock	$1.421B	$1.418B
YoY Change	0.22%	23.92%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$351.8M	$60.00M
YoY Change	486.36%
Treasury Stock Shares
Shareholders Equity	$5.009B	$4.782B	$4.782B
YoY Change
Total Liabilities & Shareholders Equity	$12.78B	$11.39B	$11.39B
YoY Change	12.17%	21.64%	21.63%

Cashflow Statement

Concept	2019 Q4	2018 Q4	2018
OPERATING ACTIVITIES
Net Income	$140.4M	$36.00M	$480.1M
YoY Change	290.0%	-71.01%	-10.05%
Depreciation, Depletion And Amortization	$84.20M	$83.10M	$294.1M
YoY Change	1.32%	30.46%	27.75%
Cash From Operating Activities	$98.80M	$189.5M	$710.7M
YoY Change	-47.86%	171.88%	36.97%
INVESTING ACTIVITIES
Capital Expenditures	-$100.1M	-$78.20M	-$250.0M
YoY Change	28.01%	79.36%	39.59%
Acquisitions			$1.215B
YoY Change			136.8%
Other Investing Activities	-$4.600M	-$9.100M	-$1.733M
YoY Change	-49.45%	-96.46%	-66.95%
Cash From Investing Activities	-$104.8M	-$87.40M	-$1.459B
YoY Change	19.91%	-70.91%	279.34%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$60.00M
YoY Change
Debt Paid & Issued, Net			$354.8M
YoY Change			1172.41%
Cash From Financing Activities	89.00M	-96.30M	$883.0M
YoY Change	-192.42%	-141.07%	-884.42%
NET CHANGE
Cash From Operating Activities	98.80M	189.5M	$710.7M
Cash From Investing Activities	-104.8M	-87.40M	-$1.459B
Cash From Financing Activities	89.00M	-96.30M	$883.0M
Net Change In Cash	83.00M	5.800M	$57.48M
YoY Change	1331.03%	52.63%	164.44%
FREE CASH FLOW
Cash From Operating Activities	$98.80M	$189.5M	$710.7M
Capital Expenditures	-$100.1M	-$78.20M	-$250.0M
Free Cash Flow	$198.9M	$267.7M	$960.7M
YoY Change	-25.7%	136.28%	37.64%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001065696
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	303312439	shares
CY2020Q2	dei	Entity Public Float EntityPublicFloat	7900000000	USD
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	320867602	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	319927243	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	303553000	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	306731328	shares
CY2020Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	17314602	shares
CY2019Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	13195915	shares
CY2018Q1	us-gaap	Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings Tax Effect TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect	5000000	USD
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.035
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.041
CY2019Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1300000000	USD
CY2018Q4	lkq	Unrecognized Tax Benefits That Would Impact Deferred Taxes UnrecognizedTaxBenefitsThatWouldImpactDeferredTaxes	1000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	1000000	USD
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	000-50404
CY2020	dei	Entity Registrant Name EntityRegistrantName	LKQ CORPORATION
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	36-4215970
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	500 West Madison Street,
CY2020	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 2800,
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Chicago,
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	IL
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	60661
CY2020	dei	City Area Code CityAreaCode	312
CY2020	dei	Local Phone Number LocalPhoneNumber	621-1950
CY2020	dei	Security12b Title Security12bTitle	Common Stock, par value $.01 per share
CY2020	dei	Trading Symbol TradingSymbol	LKQ
CY2020	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q2	dei	Entity Public Float EntityPublicFloat	7900000000	USD
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	303312439	shares
CY2020Q4	lkq	Numberof Facilities NumberofFacilities	1600
CY2020	us-gaap	Revenues Revenues	11628830000	USD
CY2019	us-gaap	Revenues Revenues	12506109000	USD
CY2018	us-gaap	Revenues Revenues	11876674000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	7035559000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	7654315000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	7301817000	USD
CY2020	us-gaap	Gross Profit GrossProfit	4593271000	USD
CY2019	us-gaap	Gross Profit GrossProfit	4851794000	USD
CY2018	us-gaap	Gross Profit GrossProfit	4574857000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	3266065000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	3580300000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	3352731000	USD
CY2020	lkq	Restructuring Charges And Business Combination Acquisition Related Costs RestructuringChargesAndBusinessCombinationAcquisitionRelatedCosts	66163000	USD
CY2019	lkq	Restructuring Charges And Business Combination Acquisition Related Costs RestructuringChargesAndBusinessCombinationAcquisitionRelatedCosts	36979000	USD
CY2018	lkq	Restructuring Charges And Business Combination Acquisition Related Costs RestructuringChargesAndBusinessCombinationAcquisitionRelatedCosts	32428000	USD
CY2020	lkq	Loss On Disposal Of Businesses And Impairment Of Net Assets Held For Sale And Goodwill LossOnDisposalOfBusinessesAndImpairmentOfNetAssetsHeldForSaleAndGoodwill	3174000	USD
CY2019	lkq	Loss On Disposal Of Businesses And Impairment Of Net Assets Held For Sale And Goodwill LossOnDisposalOfBusinessesAndImpairmentOfNetAssetsHeldForSaleAndGoodwill	47102000	USD
CY2018	lkq	Loss On Disposal Of Businesses And Impairment Of Net Assets Held For Sale And Goodwill LossOnDisposalOfBusinessesAndImpairmentOfNetAssetsHeldForSaleAndGoodwill	33244000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	272292000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	290770000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	274213000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	985577000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	896643000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	882241000	USD
CY2020	us-gaap	Interest Expense InterestExpense	103784000	USD
CY2019	us-gaap	Interest Expense InterestExpense	138504000	USD
CY2018	us-gaap	Interest Expense InterestExpense	146377000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-12751000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	128000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1350000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	15953000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	32755000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	8917000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-100582000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-105621000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-138810000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	884995000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	791022000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	743431000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	249498000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	215330000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	191395000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5012000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-32277000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-64471000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	640509000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	543415000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	487565000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	487565000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-95000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	1619000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-4397000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	640414000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	545034000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	483168000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	1888000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	2800000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	3050000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	103000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	974000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	638423000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	541260000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	480118000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.10
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.75
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CY2019	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0.01
CY2018	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	-0.01
CY2020	lkq	Earnings Per Share Basicincluding Portionattributabletononcontrolinginterest EarningsPerShareBasicincludingPortionattributabletononcontrolinginterest	2.10
CY2019	lkq	Earnings Per Share Basicincluding Portionattributabletononcontrolinginterest EarningsPerShareBasicincludingPortionattributabletononcontrolinginterest	1.76
CY2018	lkq	Earnings Per Share Basicincluding Portionattributabletononcontrolinginterest EarningsPerShareBasicincludingPortionattributabletononcontrolinginterest	1.54
CY2020	lkq	Net Income Attributableto Continuing Noncontrolling Interest Per Share Basic NetIncomeAttributabletoContinuingNoncontrollingInterestPerShareBasic	0.01
CY2019	lkq	Net Income Attributableto Continuing Noncontrolling Interest Per Share Basic NetIncomeAttributabletoContinuingNoncontrollingInterestPerShareBasic	0.01
CY2018	lkq	Net Income Attributableto Continuing Noncontrolling Interest Per Share Basic NetIncomeAttributabletoContinuingNoncontrollingInterestPerShareBasic	0.01
CY2020	lkq	Net Income Attributableto Discontinued Noncontrolling Interest Per Share Basic NetIncomeAttributabletoDiscontinuedNoncontrollingInterestPerShareBasic	0.00
CY2019	lkq	Net Income Attributableto Discontinued Noncontrolling Interest Per Share Basic NetIncomeAttributabletoDiscontinuedNoncontrollingInterestPerShareBasic	0.00
CY2018	lkq	Net Income Attributableto Discontinued Noncontrolling Interest Per Share Basic NetIncomeAttributabletoDiscontinuedNoncontrollingInterestPerShareBasic	0
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.10
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.75
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.53
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.10
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CY2019	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0.01
CY2018	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	-0.01
CY2020	lkq	Earnings Per Share Dilutedincludingportionattributabletononcontrollinginterest EarningsPerShareDilutedincludingportionattributabletononcontrollinginterest	2.10
CY2019	lkq	Earnings Per Share Dilutedincludingportionattributabletononcontrollinginterest EarningsPerShareDilutedincludingportionattributabletononcontrollinginterest	1.75
CY2018	lkq	Earnings Per Share Dilutedincludingportionattributabletononcontrollinginterest EarningsPerShareDilutedincludingportionattributabletononcontrollinginterest	1.53
CY2020	lkq	Net Income Attributableto Continuing Noncontrolling Interest Per Share Diluted NetIncomeAttributabletoContinuingNoncontrollingInterestPerShareDiluted	0.01
CY2019	lkq	Net Income Attributableto Continuing Noncontrolling Interest Per Share Diluted NetIncomeAttributabletoContinuingNoncontrollingInterestPerShareDiluted	0.01
CY2018	lkq	Net Income Attributableto Continuing Noncontrolling Interest Per Share Diluted NetIncomeAttributabletoContinuingNoncontrollingInterestPerShareDiluted	0.01
CY2020	lkq	Net Income Attributableto Discontinued Noncontrolling Interest Per Share Diluted NetIncomeAttributabletoDiscontinuedNoncontrollingInterestPerShareDiluted	0.00
CY2019	lkq	Net Income Attributableto Discontinued Noncontrolling Interest Per Share Diluted NetIncomeAttributabletoDiscontinuedNoncontrollingInterestPerShareDiluted	0.00
CY2018	lkq	Net Income Attributableto Discontinued Noncontrolling Interest Per Share Diluted NetIncomeAttributabletoDiscontinuedNoncontrollingInterestPerShareDiluted	0
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.09
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.74
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.52
CY2020	us-gaap	Profit Loss ProfitLoss	640414000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	545034000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	483168000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	1888000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	2800000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	3050000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	103000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	974000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	638423000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	541260000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	480118000	USD
CY2020	us-gaap	Translation Adjustment Functional To Reporting Currency Net Of Tax Period Increase Decrease TranslationAdjustmentFunctionalToReportingCurrencyNetOfTaxPeriodIncreaseDecrease	113767000	USD
CY2019	us-gaap	Translation Adjustment Functional To Reporting Currency Net Of Tax Period Increase Decrease TranslationAdjustmentFunctionalToReportingCurrencyNetOfTaxPeriodIncreaseDecrease	6704000	USD
CY2018	us-gaap	Translation Adjustment Functional To Reporting Currency Net Of Tax Period Increase Decrease TranslationAdjustmentFunctionalToReportingCurrencyNetOfTaxPeriodIncreaseDecrease	-108523000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-6326000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-9016000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	350000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	1033000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	23859000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-697000	USD
CY2020	lkq	Othercomprehensiveincomelossunconsolidatedsubsidiaries Othercomprehensiveincomelossunconsolidatedsubsidiaries	-4532000	USD
CY2019	lkq	Othercomprehensiveincomelossunconsolidatedsubsidiaries Othercomprehensiveincomelossunconsolidatedsubsidiaries	236000	USD
CY2018	lkq	Othercomprehensiveincomelossunconsolidatedsubsidiaries Othercomprehensiveincomelossunconsolidatedsubsidiaries	-2343000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	101876000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-25935000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-109819000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	742290000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	519099000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	373349000	USD
CY2020	lkq	Comprehensive Income Lossfrom Continuing Operations Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeLossfromContinuingOperationsNetOfTaxAttributableToNoncontrollingInterest	1888000	USD
CY2019	lkq	Comprehensive Income Lossfrom Continuing Operations Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeLossfromContinuingOperationsNetOfTaxAttributableToNoncontrollingInterest	2800000	USD
CY2018	lkq	Comprehensive Income Lossfrom Continuing Operations Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeLossfromContinuingOperationsNetOfTaxAttributableToNoncontrollingInterest	3050000	USD
CY2020	lkq	Comprehensive Income Lossfrom Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeLossfromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	103000	USD
CY2019	lkq	Comprehensive Income Lossfrom Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeLossfromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	974000	USD
CY2018	lkq	Comprehensive Income Lossfrom Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeLossfromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	740299000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	515325000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	370299000	USD
CY2020Q4	lkq	Cashandcashequivalentsatcarryingvalueexcludingrestrictedcash Cashandcashequivalentsatcarryingvalueexcludingrestrictedcash	312154000	USD
CY2019Q4	lkq	Cashandcashequivalentsatcarryingvalueexcludingrestrictedcash Cashandcashequivalentsatcarryingvalueexcludingrestrictedcash	523020000	USD
CY2020Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	1073389000	USD
CY2019Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	1131132000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	2414612000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	2772777000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	233877000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	260890000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	4034032000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	4687819000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1248703000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1234400000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1353124000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1308511000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	4591569000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4406535000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	814219000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	850338000	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	155224000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	139243000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	163662000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	153110000	USD
CY2020Q4	us-gaap	Assets Assets	12360533000	USD
CY2019Q4	us-gaap	Assets Assets	12779956000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	932406000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	942795000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	208718000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	179203000	USD
CY2020Q4	us-gaap	Customer Refund Liability Current CustomerRefundLiabilityCurrent	102148000	USD
CY2019Q4	us-gaap	Customer Refund Liability Current CustomerRefundLiabilityCurrent	97314000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	334890000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	289683000	USD
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	130021000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	121623000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	221811000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	221527000	USD
CY2020Q4	lkq	Longterm Debtand Capital Lease Obligations Current Net LongtermDebtandCapitalLeaseObligationsCurrentNet	58497000	USD
CY2019Q4	lkq	Longterm Debtand Capital Lease Obligations Current Net LongtermDebtandCapitalLeaseObligationsCurrentNet	326367000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1988491000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	2178512000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1197963000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1137597000	USD
CY2020Q4	lkq	Long Term Debtand Capital Lease Obligations Excluding Current Portion Net LongTermDebtandCapitalLeaseObligationsExcludingCurrentPortionNet	2812641000	USD
CY2019Q4	lkq	Long Term Debtand Capital Lease Obligations Excluding Current Portion Net LongTermDebtandCapitalLeaseObligationsExcludingCurrentPortionNet	3715389000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	291421000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	310129000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	374640000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	365672000	USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	24077000	USD
CY2019Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	24077000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	3208000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	3199000	USD
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1444584000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1418239000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4776040000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4140136000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-99009000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-200885000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	469105000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	351813000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	5655718000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	5008876000	USD
CY2018	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-241000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	15582000	USD
CY2019Q4	us-gaap	Minority Interest MinorityInterest	39704000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5671300000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5048580000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12360533000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12779956000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	640414000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	545034000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	483168000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	299497000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	314406000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	294077000	USD
CY2020	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	0	USD
CY2019	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	41057000	USD
CY2018	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	70895000	USD
CY2020	lkq	Loss On Disposal Of Businesses And Impairment Of Net Assets Held For Sale And Goodwill LossOnDisposalOfBusinessesAndImpairmentOfNetAssetsHeldForSaleAndGoodwill	3174000	USD
CY2019	lkq	Loss On Disposal Of Businesses And Impairment Of Net Assets Held For Sale And Goodwill LossOnDisposalOfBusinessesAndImpairmentOfNetAssetsHeldForSaleAndGoodwill	47102000	USD
CY2018	lkq	Loss On Disposal Of Businesses And Impairment Of Net Assets Held For Sale And Goodwill LossOnDisposalOfBusinessesAndImpairmentOfNetAssetsHeldForSaleAndGoodwill	33244000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	29078000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	27695000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	22760000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-12751000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	128000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1350000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-33827000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	7109000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2180000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	3934000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	16183000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-7116000	USD
CY2020	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-93588000	USD
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-26419000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-433072000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-15460000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	127153000	USD
CY2020	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	34945000	USD
CY2019	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	25776000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	-2125000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-64032000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	3712000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-77621000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	856000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-26574000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-6967000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1443870000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1064033000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	710739000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	172695000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	265730000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	250027000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	16750000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	16045000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	27659000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	7363000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	27296000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1214995000	USD
CY2020	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	5138000	USD
CY2019	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	18469000	USD
CY2018	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2020	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	7717000	USD
CY2019	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	7594000	USD
CY2018	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	60300000	USD
CY2020	lkq	Receiptsofdeferredpurchasepriceonreceivablesunderfactoringarrangements Receiptsofdeferredpurchasepriceonreceivablesunderfactoringarrangements	0	USD
CY2019	lkq	Receiptsofdeferredpurchasepriceonreceivablesunderfactoringarrangements Receiptsofdeferredpurchasepriceonreceivablesunderfactoringarrangements	0	USD
CY2018	lkq	Receiptsofdeferredpurchasepriceonreceivablesunderfactoringarrangements Receiptsofdeferredpurchasepriceonreceivablesunderfactoringarrangements	36991000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1253000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1733000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-165887000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-264853000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1458939000	USD
CY2020	us-gaap	Redemption Premium RedemptionPremium	-9498000	USD
CY2019	us-gaap	Redemption Premium RedemptionPremium	0	USD
CY2018	us-gaap	Redemption Premium RedemptionPremium	0	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3313000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	21128000	USD
CY2020	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	600000000	USD
CY2019	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2018	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	1232100000	USD
CY2020	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	841485000	USD
CY2019	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	605708000	USD
CY2018	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	1667325000	USD
CY2020	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	1472920000	USD
CY2019	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	734471000	USD
CY2018	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	1528970000	USD
CY2020	us-gaap	Repayments Of Bank Debt RepaymentsOfBankDebt	17500000	USD
CY2019	us-gaap	Repayments Of Bank Debt RepaymentsOfBankDebt	8750000	USD
CY2018	us-gaap	Repayments Of Bank Debt RepaymentsOfBankDebt	354800000	USD
CY2020	us-gaap	Proceeds From Accounts Receivable Securitization ProceedsFromAccountsReceivableSecuritization	111300000	USD
CY2019	us-gaap	Proceeds From Accounts Receivable Securitization ProceedsFromAccountsReceivableSecuritization	36600000	USD
CY2018	us-gaap	Proceeds From Accounts Receivable Securitization ProceedsFromAccountsReceivableSecuritization	10120000	USD
CY2020	us-gaap	Repayments Of Accounts Receivable Securitization RepaymentsOfAccountsReceivableSecuritization	111300000	USD
CY2019	us-gaap	Repayments Of Accounts Receivable Securitization RepaymentsOfAccountsReceivableSecuritization	146600000	USD
CY2018	us-gaap	Repayments Of Accounts Receivable Securitization RepaymentsOfAccountsReceivableSecuritization	120000	USD
CY2020	lkq	Repayments Of Notes Payable Issued From Acquisitions RepaymentsOfNotesPayableIssuedFromAcquisitions	0	USD
CY2019	lkq	Repayments Of Notes Payable Issued From Acquisitions RepaymentsOfNotesPayableIssuedFromAcquisitions	19123000	USD
CY2018	lkq	Repayments Of Notes Payable Issued From Acquisitions RepaymentsOfNotesPayableIssuedFromAcquisitions	54888000	USD
CY2020	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	115609000	USD
CY2019	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	33922000	USD
CY2018	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	11730000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	117292000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	291813000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	60000000	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-17904000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-8298000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	5086000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1512551000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-600669000	USD
CY2018	lkq	Business Acquisitionand Disposal Noncashconsiderationtransferredanddebtassumed BusinessAcquisitionandDisposalNoncashconsiderationtransferredanddebtassumed	105566000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-77311000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	882995000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	11865000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-904000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-222703000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	197607000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	57484000	USD
CY2019Q4	lkq	Cash And Cash Equivalents Continuing Operations CashAndCashEquivalentsContinuingOperations	528387000	USD
CY2018Q4	lkq	Cash And Cash Equivalents Continuing Operations CashAndCashEquivalentsContinuingOperations	337250000	USD
CY2017Q4	lkq	Cash And Cash Equivalents Continuing Operations CashAndCashEquivalentsContinuingOperations	279766000	USD
CY2019Q4	us-gaap	Disposal Group Including Discontinued Operation Cash And Cash Equivalents DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents	6470000	USD
CY2018Q4	us-gaap	Disposal Group Including Discontinued Operation Cash And Cash Equivalents DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents	0	USD
CY2017Q4	us-gaap	Disposal Group Including Discontinued Operation Cash And Cash Equivalents DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents	0	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	534857000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	337250000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	279766000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	312154000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	534857000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	337250000	USD
CY2020Q4	lkq	Disposal Group Discontinued Operations Cashand Cash Equivalents DisposalGroupDiscontinuedOperationsCashandCashEquivalents	0	USD
CY2019Q4	lkq	Disposal Group Discontinued Operations Cashand Cash Equivalents DisposalGroupDiscontinuedOperationsCashandCashEquivalents	-6470000	USD
CY2018Q4	lkq	Disposal Group Discontinued Operations Cashand Cash Equivalents DisposalGroupDiscontinuedOperationsCashandCashEquivalents	0	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	312154000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	528387000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	337250000	USD
CY2020Q4	lkq	Cashandcashequivalentsatcarryingvalueexcludingrestrictedcash Cashandcashequivalentsatcarryingvalueexcludingrestrictedcash	312154000	USD
CY2019Q4	lkq	Cashandcashequivalentsatcarryingvalueexcludingrestrictedcash Cashandcashequivalentsatcarryingvalueexcludingrestrictedcash	523020000	USD
CY2018Q4	lkq	Cashandcashequivalentsatcarryingvalueexcludingrestrictedcash Cashandcashequivalentsatcarryingvalueexcludingrestrictedcash	331761000	USD
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	0	USD
CY2019Q4	us-gaap	Restricted Cash RestrictedCash	5367000	USD
CY2018Q4	us-gaap	Restricted Cash RestrictedCash	5489000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	312154000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	528387000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	337250000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	248083000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	181306000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	200098000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	106866000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	143121000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	137866000	USD
CY2020	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	0	USD
CY2019	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	0	USD
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	251334000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	18841000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	10154000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	16518000	USD
CY2020	lkq	Business Acquisitionand Disposal Noncashconsiderationtransferredanddebtassumed BusinessAcquisitionandDisposalNoncashconsiderationtransferredanddebtassumed	4316000	USD
CY2019	lkq	Business Acquisitionand Disposal Noncashconsiderationtransferredanddebtassumed BusinessAcquisitionandDisposalNoncashconsiderationtransferredanddebtassumed	47887000	USD
CY2020	lkq	Notesandotherfinancingreceivablesinconnectionwithdisposalsofbusinessinvestment Notesandotherfinancingreceivablesinconnectionwithdisposalsofbusinessinvestment	8990000	USD
CY2019	lkq	Notesandotherfinancingreceivablesinconnectionwithdisposalsofbusinessinvestment Notesandotherfinancingreceivablesinconnectionwithdisposalsofbusinessinvestment	0	USD
CY2018	lkq	Notesandotherfinancingreceivablesinconnectionwithdisposalsofbusinessinvestment Notesandotherfinancingreceivablesinconnectionwithdisposalsofbusinessinvestment	0	USD
CY2020	lkq	Trade And Note Receivables Forgiven And Assets Held For Sale Sold With Purchase Of Noncontrolling Interest TradeAndNoteReceivablesForgivenAndAssetsHeldForSaleSoldWithPurchaseOfNoncontrollingInterest	6079000	USD
CY2019	lkq	Trade And Note Receivables Forgiven And Assets Held For Sale Sold With Purchase Of Noncontrolling Interest TradeAndNoteReceivablesForgivenAndAssetsHeldForSaleSoldWithPurchaseOfNoncontrollingInterest	0	USD
CY2018	lkq	Trade And Note Receivables Forgiven And Assets Held For Sale Sold With Purchase Of Noncontrolling Interest TradeAndNoteReceivablesForgivenAndAssetsHeldForSaleSoldWithPurchaseOfNoncontrollingInterest	0	USD
CY2020	lkq	Note Issued To Acquire Noncontrolling Interest NoteIssuedToAcquireNoncontrollingInterest	0	USD
CY2019	lkq	Note Issued To Acquire Noncontrolling Interest NoteIssuedToAcquireNoncontrollingInterest	14196000	USD
CY2018	lkq	Note Issued To Acquire Noncontrolling Interest NoteIssuedToAcquireNoncontrollingInterest	0	USD
CY2020	lkq	Business Acquisition Contingent Consideration And Liabilities At Fair Value BusinessAcquisitionContingentConsiderationAndLiabilitiesAtFairValue	3045000	USD
CY2020	lkq	Business Acquisition Contingent Consideration And Liabilities At Fair Value BusinessAcquisitionContingentConsiderationAndLiabilitiesAtFairValue	3045000	USD
CY2019	lkq	Business Acquisition Contingent Consideration And Liabilities At Fair Value BusinessAcquisitionContingentConsiderationAndLiabilitiesAtFairValue	6627000	USD
CY2018	lkq	Business Acquisition Contingent Consideration And Liabilities At Fair Value BusinessAcquisitionContingentConsiderationAndLiabilitiesAtFairValue	3107000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4206653000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	483168000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-109819000	USD
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	251334000	USD
CY2020Q4	lkq	Numberof Facilities NumberofFacilities	1600
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	60000000	USD
CY2018	lkq	Restricted Stock Units Vested Value Netof Tax Withholdings RestrictedStockUnitsVestedValueNetofTaxWithholdings	-3796000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	22760000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	5303000	USD
CY2018	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	1771000	USD
CY2018	lkq	Capitalcontributionsfromnetofdividendsdeclaredtononcontrollinginterestshareholder Capitalcontributionsfromnetofdividendsdeclaredtononcontrollinginterestshareholder	810000	USD
CY2018	lkq	Consolidation Less Than Wholly Owned Subsidiary Non Controlling Interest Acquired Value ConsolidationLessThanWhollyOwnedSubsidiaryNonControllingInterestAcquiredValue	44110000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4838752000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	545034000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-25935000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	291813000	USD
CY2019	lkq	Restricted Stock Units Vested Value Netof Tax Withholdings RestrictedStockUnitsVestedValueNetofTaxWithholdings	-2084000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	27695000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	9055000	USD
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	4495000	USD
CY2019	lkq	Capitalcontributionsfromnetofdividendsdeclaredtononcontrollinginterestshareholder Capitalcontributionsfromnetofdividendsdeclaredtononcontrollinginterestshareholder	-8474000	USD
CY2019	lkq	Consolidation Less Than Wholly Owned Subsidiary Non Controlling Interest Acquired Value ConsolidationLessThanWhollyOwnedSubsidiaryNonControllingInterestAcquiredValue	10365000	USD
CY2019	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	-49520000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5048580000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5048580000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	640414000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	101876000	USD
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	117292000	USD
CY2020	lkq	Restricted Stock Units Vested Value Netof Tax Withholdings RestrictedStockUnitsVestedValueNetofTaxWithholdings	-3055000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	29078000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1467000	USD
CY2020	lkq	Capitalcontributionsfromnetofdividendsdeclaredtononcontrollinginterestshareholder Capitalcontributionsfromnetofdividendsdeclaredtononcontrollinginterestshareholder	-3757000	USD
CY2020	lkq	Cumulative Effect On Retained Earnings Before Tax CumulativeEffectOnRetainedEarningsBeforeTax	-2519000	USD
CY2020	us-gaap	Noncontrolling Interest Decrease From Deconsolidation NoncontrollingInterestDecreaseFromDeconsolidation	11404000	USD
CY2020	lkq	Purchase Of Noncontrolling Interests PurchaseOfNoncontrollingInterests	-12088000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5671300000	USD
CY2020	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	2
CY2019	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	7
CY2018Q4	us-gaap	Business Combination Acquired Receivables Gross Contractual Amount BusinessCombinationAcquiredReceivablesGrossContractualAmount	163997000	USD
CY2018Q4	us-gaap	Business Combination Acquired Receivables Estimated Uncollectible BusinessCombinationAcquiredReceivablesEstimatedUncollectible	3736000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory	394259000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Prepaid Expense And Other Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets	12821000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	277003000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangible Assets Other Than Goodwill BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill	320414000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Noncurrent Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets	16662000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deferred Tax Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities	83415000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities	366904000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noncurrent Liabilities Long Term Debt BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt	84800000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noncurrent Liabilities Other BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther	91130000	USD
CY2018	lkq	Consolidation Less Than Wholly Owned Subsidiary Non Controlling Interest Acquired Value ConsolidationLessThanWhollyOwnedSubsidiaryNonControllingInterestAcquiredValue	44110000	USD
CY2018Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	3107000	USD
CY2018Q4	lkq	Business Acquisition Cost Of Acquired Entity Other Purchase Price Obligations Non Interest Bearing BusinessAcquisitionCostOfAcquiredEntityOtherPurchasePriceObligationsNonInterestBearing	2461000	USD
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	251334000	USD
CY2018Q4	lkq	Business Acquisition Cost Of Acquired Entity Notes Payable Issued BusinessAcquisitionCostOfAcquiredEntityNotesPayableIssued	11347000	USD
CY2018	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	2418000	USD
CY2018	lkq	Subsequentpaymentsonpurchasepricepayables Subsequentpaymentsonpurchasepricepayables	1711000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1214995000	USD
CY2020	us-gaap	Subsequent Event Pro Forma Business Combinations SubsequentEventProFormaBusinessCombinations	<div style="margin-top:6pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The following pro forma summary presents the effect of the businesses acquired during the year ended December 31, 2018 as though they had been acquired as of January 1, 2017. The pro forma adjustments are based upon unaudited financial information of the acquired entities (in thousands):</span></div><div style="margin-bottom:6pt;margin-top:6pt;padding-left:36pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;vertical-align:top;width:68.567%"><tr><td style="width:1.0%"/><td style="width:80.776%"/><td style="width:0.1%"/><td colspan="3" style="display:none"/><td style="width:0.1%"/><td style="width:0.866%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:15.958%"/><td style="width:0.1%"/></tr><tr><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="display:none"/><td colspan="6" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">Year Ended December 31,</span></td></tr><tr><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="display:none"/><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">2018</span></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Revenue, as reported</span></td><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">11,876,674 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"><div style="padding-left:9pt;text-indent:-9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Revenue of purchased businesses for the period prior to acquisition:</span></div></td><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Stahlgruber</span></td><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">815,405 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Other acquisitions</span></td><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">164,133 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Pro forma revenue</span></td><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">12,856,212 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr style="height:6pt"><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Income from continuing operations, as reported </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline">(1)</span></div></td><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">487,565 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"><div style="padding-left:9pt;text-indent:-9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Income from continuing operations of purchased businesses for the period prior to acquisition, and pro forma purchase accounting adjustments:</span></div></td><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Stahlgruber</span></td><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">17,309 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Other acquisitions</span></td><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">6,591 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Acquisition related expenses, net of tax </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline">(2)</span></div></td><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">14,524 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Pro forma income from continuing operations</span></td><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">525,989 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Less: Net income attributable to continuing noncontrolling interest, as reported</span></td><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">3,050 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Less: Pro forma net income attributable to noncontrolling interest</span></td><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">2,799 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 21.25pt;text-align:left;text-indent:-9pt;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Pro forma income from continuing operations attributable to LKQ stockholders</span></td><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">520,140 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr></table></div><div style="margin-top:6pt;padding-left:36pt;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">(1)</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:6.34pt">2018 amounts include interest expense for the period from April 9, 2018 through December 31, 2018 recorded on the senior notes issued in connection with our acquisition of Stahlgruber.</span></div><div style="margin-top:6pt;padding-left:36pt;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">(2)</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:6.34pt">Includes expenses related to acquisitions closed in the period and excludes expenses for acquisitions not yet completed.</span></div><div style="margin-top:6pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Unaudited pro forma supplemental information is based upon accounting estimates and judgments that we believe are reasonable. The unaudited pro forma supplemental information includes the effect of purchase accounting adjustments, such as the adjustment of inventory acquired to fair value, adjustments to depreciation on acquired property, plant and equipment, adjustments to rent expense for above or below market leases, adjustments to amortization on acquired intangible assets, adjustments to interest expense, and the related tax effects. The pro forma impact of our acquisitions also reflects the elimination of acquisition related expenses, net of tax. Refer to Note 6, "Restructuring and Acquisition Related Expenses," for further information regarding our acquisition related expenses. These pro forma results are not necessarily indicative of what would have occurred if the acquisitions had been in effect for the periods presented or of future results.</span></div>
CY2018	us-gaap	Revenues Revenues	11876674000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	487565000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	487565000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	3050000	USD
CY2020Q1	lkq	Purchasesundersupplyagreement Purchasesundersupplyagreement	4000000	USD
CY2019	lkq	Purchasesundersupplyagreement Purchasesundersupplyagreement	30000000	USD
CY2018	lkq	Purchasesundersupplyagreement Purchasesundersupplyagreement	24000000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:14pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Use of Estimates</span></div><div style="margin-top:6pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">In preparing our financial statements in conformity with accounting principles generally accepted in the United States of America, we are required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.</span></div>
CY2019Q4	us-gaap	Restricted Cash RestrictedCash	5000000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	70000000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	53000000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	25000000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	12000000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	14000000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	52685000	USD
CY2020	lkq	Cumulative Effect On Retained Earnings Before Tax CumulativeEffectOnRetainedEarningsBeforeTax	-2519000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	24686000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	14024000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	4065000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	69931000	USD
CY2020	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top:14pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Concentrations of Credit Risk</span></div><div style="margin-top:6pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Financial instruments that potentially subject us to significant concentration of credit risk consist primarily of cash and cash equivalents and accounts receivable. We control our exposure to credit risk associated with these instruments by (i) placing our cash and cash equivalents with several major financial institutions; (ii) holding high-quality financial instruments; and (iii) maintaining strict policies over credit extension that include credit evaluations, credit limits and monitoring procedures. In addition, our overall credit risk with respect to accounts receivable is limited to some extent because our customer base is composed of a large number of geographically diverse customers.</span></div>
CY2020Q4	us-gaap	Inventory Net InventoryNet	2414612000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	2772777000	USD
CY2020	us-gaap	Property Plant And Equipment Depreciation Methods PropertyPlantAndEquipmentDepreciationMethods	straight-line method
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2066930000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1988740000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	895149000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	807680000	USD
CY2020Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	76922000	USD
CY2019Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	53340000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1248703000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1234400000	USD
CY2020	us-gaap	Depreciation Depreciation	180000000	USD
CY2019	us-gaap	Depreciation Depreciation	174000000	USD
CY2018	us-gaap	Depreciation Depreciation	157000000	USD
CY2020Q1	lkq	Decreasein Market Capitalization DecreaseinMarketCapitalization	0.40
CY2020Q2	lkq	Decrease In Forecasted Revenue DecreaseInForecastedRevenue	0.50
CY2020Q1	lkq	Amountthatfairvalueexceedscarryingvalue Amountthatfairvalueexceedscarryingvalue	0.12
CY2020Q4	lkq	Amountthatfairvalueexceedscarryingvalue Amountthatfairvalueexceedscarryingvalue	0.30
CY2018Q4	us-gaap	Goodwill Goodwill	4381458000	USD
CY2019	lkq	Goodwill Acquired During Period And Adjustments GoodwillAcquiredDuringPeriodAndAdjustments	54012000	USD
CY2019	lkq	Goodwillreclassifiedtoassetsheldforsale Goodwillreclassifiedtoassetsheldforsale	-4721000	USD
CY2019	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	1919000	USD
CY2020Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	33244000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	137000000	USD
CY2019	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-22295000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4406535000	USD
CY2020	lkq	Goodwill Acquired During Period And Adjustments GoodwillAcquiredDuringPeriodAndAdjustments	5587000	USD
CY2020	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	179447000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	4591569000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	732919000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	769038000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	814219000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	850338000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1478217000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	745298000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	732919000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1331373000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	562335000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	769038000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	119000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	140000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	101000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	89000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	77000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	69000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	62000000	USD
CY2020	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	3000000	USD
CY2020	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	78000000	USD
CY2020Q3	lkq	Numberof Businesses Divested NumberofBusinessesDivested	2
CY2019	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	47000000	USD
CY2019	lkq	Disposal Group Continuing Operations Revenue DisposalGroupContinuingOperationsRevenue	55000000	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	155000000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	139000000	USD
CY2020Q4	lkq	Share Priceofthe Equity Method Investment SharePriceoftheEquityMethodInvestment	91	SEK
CY2018	lkq	Fair Value Measured On Recurring Basis Gains Losses Included In Earnings FairValueMeasuredOnRecurringBasisGainsLossesIncludedInEarnings	5000000	USD
CY2018Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	23262000	USD
CY2019	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	58253000	USD
CY2019	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	56074000	USD
CY2019Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	25441000	USD
CY2020	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	67365000	USD
CY2020	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	64892000	USD
CY2020Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	27914000	USD
CY2020Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	110000000	USD
CY2019Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	109000000	USD
CY2020Q4	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	55000000	USD
CY2019Q4	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	54000000	USD
CY2019Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	69000000	USD
CY2020	lkq	Government Assistance Amount GovernmentAssistanceAmount	52000000	USD
CY2020	lkq	Deferred Tax Payments Liability Cares Act DeferredTaxPaymentsLiabilityCARESAct	30000000	USD
CY2020	lkq	Percentage Threshold For Uncertain Tax Positions PercentageThresholdForUncertainTaxPositions	0.50
CY2018Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	500000000	USD
CY2019Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	500000000	USD
CY2020Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	1000000000.0	USD
CY2020	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	4100000	shares
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	117000000	USD
CY2019	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	10900000	shares
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	292000000	USD
CY2018	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	2300000	shares
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	60000000	USD
CY2020Q4	lkq	Stock Repurchase Program Remaining Authorized Repurchases Amount StockRepurchaseProgramRemainingAuthorizedRepurchasesAmount	531000000	USD
CY2020Q4	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	10000000	USD
CY2020Q3	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	19000000	USD
CY2019Q4	lkq	Redeemable Nci Put Option RedeemableNCIPutOption	21000000	EUR
CY2019Q4	lkq	Redeemable Nci Put Option RedeemableNCIPutOption	24000000	USD
CY2019Q4	lkq	Redeemable Nci Call Option RedeemableNCICallOption	26000000	USD
CY2019Q4	lkq	Redeemable Nci Call Option RedeemableNCICallOption	23000000	EUR
CY2019Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	24000000	USD
CY2020	us-gaap	Revenues Revenues	11628830000	USD
CY2019	us-gaap	Revenues Revenues	12506109000	USD
CY2018	us-gaap	Revenues Revenues	11876674000	USD
CY2018Q4	lkq	Deferred Service Type Warranty Revenue DeferredServiceTypeWarrantyRevenue	24006000	USD
CY2019	lkq	Deferred Service Type Revenue Additions DeferredServiceTypeRevenueAdditions	43381000	USD
CY2019	lkq	Deferred Service Type Revenue Recognized DeferredServiceTypeRevenueRecognized	-40320000	USD
CY2019Q4	lkq	Deferred Service Type Warranty Revenue DeferredServiceTypeWarrantyRevenue	27067000	USD
CY2020	lkq	Deferred Service Type Revenue Additions DeferredServiceTypeRevenueAdditions	43214000	USD
CY2020	lkq	Deferred Service Type Revenue Recognized DeferredServiceTypeRevenueRecognized	-44659000	USD
CY2020Q4	lkq	Deferred Service Type Warranty Revenue DeferredServiceTypeWarrantyRevenue	25622000	USD
CY2020Q4	us-gaap	Contract With Customer Refund Liability ContractWithCustomerRefundLiability	102000000	USD
CY2020Q4	us-gaap	Contract With Customer Right To Recover Product ContractWithCustomerRightToRecoverProduct	57000000	USD
CY2019Q4	us-gaap	Contract With Customer Refund Liability ContractWithCustomerRefundLiability	97000000	USD
CY2019Q4	us-gaap	Contract With Customer Right To Recover Product ContractWithCustomerRightToRecoverProduct	52000000	USD
CY2020Q4	lkq	Revenue Variable Consideration Reserve RevenueVariableConsiderationReserve	127000000	USD
CY2019Q4	lkq	Revenue Variable Consideration Reserve RevenueVariableConsiderationReserve	108000000	USD
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	8000000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	2000000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	18000000	USD
CY2020	us-gaap	Restructuring Costs RestructuringCosts	9000000	USD
CY2019	us-gaap	Restructuring Costs RestructuringCosts	18000000	USD
CY2018	us-gaap	Restructuring Costs RestructuringCosts	14000000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	70000000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	10000000	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	230360	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	270388	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	189204	shares
CY2020	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	22464000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	29000000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	28000000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	23000000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6614000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6227000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	5220000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	21468000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	17540000	USD
CY2020Q4	lkq	Unrecognized Stock Based Compensation Expense Expected To Be Recognize In Year One UnrecognizedStockBasedCompensationExpenseExpectedToBeRecognizeInYearOne	18034000	USD
CY2020Q4	lkq	Unrecognized Stock Based Compensation Expense Expected To Be Recognize In Year Two UnrecognizedStockBasedCompensationExpenseExpectedToBeRecognizeInYearTwo	10963000	USD
CY2020Q4	lkq	Unrecognized Stock Based Compensation Expense Expected To Be Recognize In Year Three UnrecognizedStockBasedCompensationExpenseExpectedToBeRecognizeInYearThree	5352000	USD
CY2020Q4	lkq	Unrecognized Stock Based Compensation Expense Expected To Be Recognize In Year Four UnrecognizedStockBasedCompensationExpenseExpectedToBeRecognizeInYearFour	2875000	USD
CY2020Q4	lkq	Unrecognized Stock Based Compensation Expense Expected To Be Recognize In Year Five UnrecognizedStockBasedCompensationExpenseExpectedToBeRecognizeInYearFive	136000	USD
CY2020Q4	lkq	Unrecognized Stock Based Compensation Expense Expected To Be Recognized Total UnrecognizedStockBasedCompensationExpenseExpectedToBeRecognizedTotal	37360000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	640509000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	543415000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	487565000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	304640000	shares
CY2018	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-74346000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	310155000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	314428000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	305006000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	310969000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	315849000	shares
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.10
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.75
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.55
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.10
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.75
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.54
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-70476000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	4742000	USD
CY2018	lkq	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent Unrealized Loss Gains ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParentUnrealizedLossGains	37063000	USD
CY2018	lkq	Reclassification From Aoci Current Period Attributable To Parent Deferred Income Tax ReclassificationFromAociCurrentPeriodAttributableToParentDeferredIncomeTax	-8675000	USD
CY2018	lkq	Other Comprehensive Loss Income Before Reclassification Unconsolidated Subsidiary OtherComprehensiveLossIncomeBeforeReclassificationUnconsolidatedSubsidiary	2343000	USD
CY2018	us-gaap	Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings Tax Effect TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect	5345000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-174950000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-868000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-3000000	USD
CY2019	lkq	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent Unrealized Loss Gains ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParentUnrealizedLossGains	36468000	USD
CY2019	lkq	Reclassification From Aoci Current Period Attributable To Parent Deferred Income Tax ReclassificationFromAociCurrentPeriodAttributableToParentDeferredIncomeTax	-8544000	USD
CY2019	lkq	Other Comprehensive Income Loss Before Reclassifications Disposal Of Business OtherComprehensiveIncomeLossBeforeReclassificationsDisposalOfBusiness	-379000	USD
CY2019	lkq	Other Comprehensive Loss Income Before Reclassification Unconsolidated Subsidiary OtherComprehensiveLossIncomeBeforeReclassificationUnconsolidatedSubsidiary	-236000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-200885000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	54990000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-14617000	USD
CY2020	lkq	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent Unrealized Loss Gains ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParentUnrealizedLossGains	-47285000	USD
CY2020Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	2896676000	USD
CY2020	lkq	Reclassification From Aoci Current Period Attributable To Parent Deferred Income Tax ReclassificationFromAociCurrentPeriodAttributableToParentDeferredIncomeTax	11556000	USD
CY2020	lkq	Other Comprehensive Income Loss Before Reclassifications Disposal Of Business OtherComprehensiveIncomeLossBeforeReclassificationsDisposalOfBusiness	1072000	USD
CY2020	lkq	Other Comprehensive Loss Income Before Reclassification Unconsolidated Subsidiary OtherComprehensiveLossIncomeBeforeReclassificationUnconsolidatedSubsidiary	4532000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-99009000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018Q1	us-gaap	Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings Tax Effect TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect	5000000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	57336000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	40837000	USD
CY2020Q4	lkq	Other Debt OtherDebt	15706000	USD
CY2019Q4	lkq	Other Debt OtherDebt	113010000	USD
CY2019Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	4072026000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	25225000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	29990000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Current Net DeferredFinanceCostsCurrentNet	313000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Current Net DeferredFinanceCostsCurrentNet	280000	USD
CY2020Q4	lkq	Debtand Capital Lease Obligations Net DebtandCapitalLeaseObligationsNet	2871138000	USD
CY2019Q4	lkq	Debtand Capital Lease Obligations Net DebtandCapitalLeaseObligationsNet	4041756000	USD
CY2020Q4	lkq	Longterm Debtand Capital Lease Obligations Current Net LongtermDebtandCapitalLeaseObligationsCurrentNet	58497000	USD
CY2019Q4	lkq	Longterm Debtand Capital Lease Obligations Current Net LongtermDebtandCapitalLeaseObligationsCurrentNet	326367000	USD
CY2020Q4	lkq	Long Term Debtand Capital Lease Obligations Excluding Current Portion Net LongTermDebtandCapitalLeaseObligationsExcludingCurrentPortionNet	2812641000	USD
CY2019Q4	lkq	Long Term Debtand Capital Lease Obligations Excluding Current Portion Net LongTermDebtandCapitalLeaseObligationsExcludingCurrentPortionNet	3715389000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	58810000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	32757000	USD
CY2020Q4	lkq	Short Term Debt That May Be Extended Beyond The Current Due Date ShortTermDebtThatMayBeExtendedBeyondTheCurrentDueDate	24000000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	25737000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1532638000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	7104000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1239630000	USD
CY2020Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	2896676000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Gross DeferredFinanceCostsGross	26000000	USD
CY2020Q4	lkq	Restrictive Payments Under Borrowing Agreement RestrictivePaymentsUnderBorrowingAgreement	2300000000	USD
CY2020Q4	lkq	Settlementof Notional Amounts SettlementofNotionalAmounts	4000000	USD
CY2020Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	0	USD
CY2020Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	0	USD
CY2019Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	3443000	USD
CY2019Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	970000	USD
CY2020Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	58577000	USD
CY2020Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	0	USD
CY2019Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	2975000	USD
CY2019Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	23349000	USD
CY2020Q4	lkq	Borrowings Under Credit Facility BorrowingsUnderCreditFacility	1000000000.0	USD
CY2019Q4	lkq	Borrowings Under Credit Facility BorrowingsUnderCreditFacility	1600000000	USD
CY2019Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	1300000000	USD
CY2020Q4	us-gaap	Residual Value Of Leased Asset ResidualValueOfLeasedAsset	63000000	USD
CY2020	lkq	Rent Reductions In Selling General And Administrative Expenses RentReductionsInSellingGeneralAndAdministrativeExpenses	3000000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1353124000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1308511000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	55423000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	39077000	USD
CY2020Q4	lkq	Lease Rightof Use Asset LeaseRightofUseAsset	1408547000	USD
CY2019Q4	lkq	Lease Rightof Use Asset LeaseRightofUseAsset	1347588000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	221811000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	221527000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	12239000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	9409000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1197963000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1137597000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	69047000	USD
CY2020Q4	lkq	Lease Liability Payments Due LeaseLiabilityPaymentsDue	1946542000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	457721000	USD
CY2020Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	11711000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	45097000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	31428000	USD
CY2020Q4	lkq	Lease Liability LeaseLiability	1477110000	USD
CY2019Q4	lkq	Lease Liability LeaseLiability	1399961000	USD
CY2020	us-gaap	Lease Cost LeaseCost	423253000	USD
CY2019	us-gaap	Lease Cost LeaseCost	432509000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	298118000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due In Next Rolling Twelve Months FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths	13087000	USD
CY2020Q4	lkq	Us Gaap Finance Lease Liability Payments Due In Next Rolling Twelve Months UsGaap_FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths	311205000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	11744000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	25049000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	13326000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Two LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo	256544000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Two FinanceLeaseLiabilityPaymentsDueInRollingYearTwo	11562000	USD
CY2020Q4	lkq	Lease Liability Payments Due Year Two LeaseLiabilityPaymentsDueYearTwo	268106000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Three LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree	216851000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Three FinanceLeaseLiabilityPaymentsDueInRollingYearThree	7711000	USD
CY2020Q4	lkq	Lease Liability Payments Due Year Three LeaseLiabilityPaymentsDueYearThree	224562000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Four LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour	180425000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Four FinanceLeaseLiabilityPaymentsDueInRollingYearFour	7032000	USD
CY2020Q4	lkq	Lease Liability Payments Due Year Four LeaseLiabilityPaymentsDueYearFour	187457000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive	148363000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Five FinanceLeaseLiabilityPaymentsDueInRollingYearFive	5183000	USD
CY2020Q4	lkq	Lease Liability Payments Due Year Five LeaseLiabilityPaymentsDueYearFive	153546000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive	777194000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due In Rolling After Year Five FinanceLeaseLiabilityPaymentsDueInRollingAfterYearFive	24472000	USD
CY2020Q4	lkq	Lease Liability Payments Due After Year Five LeaseLiabilityPaymentsDueAfterYearFive	801666000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	1877495000	USD
CY2020Q4	lkq	Lease Liability Undiscounted Excess Amount LeaseLiabilityUndiscountedExcessAmount	469432000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1419774000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	57336000	USD
CY2020Q4	lkq	Lease Liability LeaseLiability	1477110000	USD
CY2020	lkq	Operating Lease Not Yet Commenced Expense OperatingLeaseNotYetCommencedExpense	84000000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y8M12D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y6M
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P9Y
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P9Y2M12D
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.053
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.052
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.035
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.041
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	299260000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	297712000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	11772000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	128539000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	144142000	USD
CY2018	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	9000000	USD
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	13000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	6000000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	225388000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	201492000	USD
CY2020	us-gaap	Defined Benefit Plan Business Combinations And Acquisitions Benefit Obligation DefinedBenefitPlanBusinessCombinationsAndAcquisitionsBenefitObligation	-506000	USD
CY2019	us-gaap	Defined Benefit Plan Business Combinations And Acquisitions Benefit Obligation DefinedBenefitPlanBusinessCombinationsAndAcquisitionsBenefitObligation	2071000	USD
CY2020	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	3565000	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	3592000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	2740000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	4077000	USD
CY2020	us-gaap	Defined Benefit Plan Benefit Obligation Contributions By Plan Participant DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant	438000	USD
CY2019	us-gaap	Defined Benefit Plan Benefit Obligation Contributions By Plan Participant DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant	408000	USD
CY2020	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-10662000	USD
CY2019	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-32018000	USD
CY2020	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	6841000	USD
CY2019	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	6849000	USD
CY2020	us-gaap	Defined Benefit Plan Curtailments DefinedBenefitPlanCurtailments	0	USD
CY2019	us-gaap	Defined Benefit Plan Curtailments DefinedBenefitPlanCurtailments	-6000	USD
CY2020	us-gaap	Defined Benefit Plan Benefit Obligation Payment For Settlement DefinedBenefitPlanBenefitObligationPaymentForSettlement	40565000	USD
CY2019	us-gaap	Defined Benefit Plan Benefit Obligation Payment For Settlement DefinedBenefitPlanBenefitObligationPaymentForSettlement	8493000	USD
CY2020	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	-16658000	USD
CY2019	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	2922000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	211539000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	225388000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	83305000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	91672000	USD
CY2020	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	3663000	USD
CY2019	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	2558000	USD
CY2020	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	14028000	USD
CY2019	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	4740000	USD
CY2020	us-gaap	Defined Benefit Plan Plan Assets Contributions By Plan Participant DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant	438000	USD
CY2019	us-gaap	Defined Benefit Plan Plan Assets Contributions By Plan Participant DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant	408000	USD
CY2020	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	6798000	USD
CY2019	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	6770000	USD
CY2020	us-gaap	Defined Benefit Plan Settlements Plan Assets DefinedBenefitPlanSettlementsPlanAssets	40565000	USD
CY2019	us-gaap	Defined Benefit Plan Settlements Plan Assets DefinedBenefitPlanSettlementsPlanAssets	8493000	USD
CY2020	us-gaap	Defined Benefit Plan Plan Assets Foreign Currency Translation Gain Loss DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss	4891000	USD
CY2019	us-gaap	Defined Benefit Plan Plan Assets Foreign Currency Translation Gain Loss DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss	-810000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	58962000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	83305000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-152577000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-142083000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	208712000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	222607000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	3603000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	11754000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	148974000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	130329000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-152577000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-142083000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	208712000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	222607000	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	58962000	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	83305000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation	211539000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation	225388000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Plan Assets DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets	58962000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Plan Assets DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets	83305000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.007
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.014
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.018
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.017
CY2020	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	3565000	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	3592000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	3215000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	2740000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	4077000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	3476000	USD
CY2020	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	2129000	USD
CY2019	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	2337000	USD
CY2018	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	2949000	USD
CY2020	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	1272000	USD
CY2019	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-404000	USD
CY2018	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-54000	USD
CY2020	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	-5654000	USD
CY2019	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	378000	USD
CY2018	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	-74000	USD
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	11102000	USD
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	4550000	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	3762000	USD
CY2020	lkq	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Service Cost Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostServiceCostRate	0.007
CY2019	lkq	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Service Cost Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostServiceCostRate	0.013
CY2018	lkq	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Service Cost Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostServiceCostRate	0.013
CY2020	lkq	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Interest Cost Rate Cost DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostInterestCostRateCost	0.018
CY2019	lkq	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Interest Cost Rate Cost DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostInterestCostRateCost	0.025
CY2018	lkq	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Interest Cost Rate Cost DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostInterestCostRateCost	0.025
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.021
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.018
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.019
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.029
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.031
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.048
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-20167000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Amortization Of Gain Loss Next Fiscal Year DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear	-2000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	47000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	58962000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	83305000	USD
CY2020	us-gaap	Defined Benefit Plan Actual Return On Plan Assets Still Held DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld	1394000	USD
CY2019	us-gaap	Defined Benefit Plan Actual Return On Plan Assets Still Held DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld	1424000	USD
CY2020	us-gaap	Defined Benefit Plan Purchases Sales And Settlements DefinedBenefitPlanPurchasesSalesAndSettlements	-992000	USD
CY2019	us-gaap	Defined Benefit Plan Purchases Sales And Settlements DefinedBenefitPlanPurchasesSalesAndSettlements	-1181000	USD
CY2020	us-gaap	Defined Benefit Plan Transfers Between Measurement Levels DefinedBenefitPlanTransfersBetweenMeasurementLevels	0	USD
CY2019	us-gaap	Defined Benefit Plan Transfers Between Measurement Levels DefinedBenefitPlanTransfersBetweenMeasurementLevels	-19640000	USD
CY2020	lkq	Defined Benefit Plans Plan Assets Level3 Reconciliation Currency Translation DefinedBenefitPlansPlanAssetsLevel3ReconciliationCurrencyTranslation	3675000	USD
CY2019	lkq	Defined Benefit Plans Plan Assets Level3 Reconciliation Currency Translation DefinedBenefitPlansPlanAssetsLevel3ReconciliationCurrencyTranslation	-915000	USD
CY2020	lkq	Defined Benefit Plan Plan Assets Contributionsby Employer Including Benefits Paidto Participants DefinedBenefitPlanPlanAssetsContributionsbyEmployerIncludingBenefitsPaidtoParticipants	14000000	USD
CY2021	lkq	Defined Benefit Plan Plan Assets Contributionsby Employer Including Benefits Paidto Participants DefinedBenefitPlanPlanAssetsContributionsbyEmployerIncludingBenefitsPaidtoParticipants	4000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	5015000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	5410000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	5573000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	5991000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	5938000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	33802000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	155887000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	101839000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	90216000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	37981000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	24925000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	25851000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	89123000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	81081000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	77508000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	282991000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	207845000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	193575000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-6805000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	22173000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	14977000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-6521000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	6376000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	4386000	USD
CY2019Q3	lkq	Tax Cutsand Jobs Actof2017 Transition Taxfor Accumulated Foreign Earnings Adjustment To Provisional Amount TaxCutsandJobsActof2017TransitionTaxforAccumulatedForeignEarningsAdjustmentToProvisionalAmount	1000000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-21064000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-21543000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	249498000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	215330000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	191395000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	713087000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	616842000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	562758000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	171908000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	174180000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	180673000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	884995000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	791022000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	743431000	USD
CY2020	lkq	Tax Cutsand Jobs Actof2017 Transition Taxfor Accumulated Foreign Earnings TaxCutsandJobsActof2017TransitionTaxforAccumulatedForeignEarnings	42000000	USD
	lkq	Tax Cutsand Jobs Actsof2017 Transition Tax For Accumulated Foreign Earnings Payment Period TaxCutsandJobsActsof2017TransitionTaxForAccumulatedForeignEarningsPaymentPeriod	P8Y
CY2020Q4	lkq	Tax Cuts And Jobs Act Of2017 Transition Tax For Accumulated Foreign Earnings Remaining TaxCutsAndJobsActOf2017TransitionTaxForAccumulatedForeignEarningsRemaining	32000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.009
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.016
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.032
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.032
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.035
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.019
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.014
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.009
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.017
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.010
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.014
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.008
CY2020	lkq	Effective Income Tax Rate Reconciliation Effectof U.S.Federal Tax Reform Transition Taxon Foreign Earnings EffectiveIncomeTaxRateReconciliationEffectofU.S.FederalTaxReformTransitionTaxonForeignEarnings	0
CY2019	lkq	Effective Income Tax Rate Reconciliation Effectof U.S.Federal Tax Reform Transition Taxon Foreign Earnings EffectiveIncomeTaxRateReconciliationEffectofU.S.FederalTaxReformTransitionTaxonForeignEarnings	0.001
CY2018	lkq	Effective Income Tax Rate Reconciliation Effectof U.S.Federal Tax Reform Transition Taxon Foreign Earnings EffectiveIncomeTaxRateReconciliationEffectofU.S.FederalTaxReformTransitionTaxonForeignEarnings	-0.013
CY2020	lkq	Effective Income Tax Rate Reconciliation Excess Tax Benefiton Stock Based Payments Percent EffectiveIncomeTaxRateReconciliationExcessTaxBenefitonStockBasedPaymentsPercent	0
CY2019	lkq	Effective Income Tax Rate Reconciliation Excess Tax Benefiton Stock Based Payments Percent EffectiveIncomeTaxRateReconciliationExcessTaxBenefitonStockBasedPaymentsPercent	-0.003
CY2018	lkq	Effective Income Tax Rate Reconciliation Excess Tax Benefiton Stock Based Payments Percent EffectiveIncomeTaxRateReconciliationExcessTaxBenefitonStockBasedPaymentsPercent	-0.006
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.004
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.001
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.008
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.282
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.272
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.257
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2018Q3	lkq	Tax Cutsand Jobs Actof2017 Transition Taxfor Accumulated Foreign Earnings Adjustment To Provisional Amount TaxCutsandJobsActof2017TransitionTaxforAccumulatedForeignEarningsAdjustmentToProvisionalAmount	10000000	USD
CY2020Q4	us-gaap	Tax Cuts And Jobs Act Of2017 Transition Tax For Accumulated Foreign Earnings Liability Current TaxCutsAndJobsActOf2017TransitionTaxForAccumulatedForeignEarningsLiabilityCurrent	3000000	USD
CY2020Q4	us-gaap	Tax Cuts And Jobs Act Of2017 Transition Tax For Accumulated Foreign Earnings Liability Noncurrent TaxCutsAndJobsActOf2017TransitionTaxForAccumulatedForeignEarningsLiabilityNoncurrent	28000000	USD
CY2019	lkq	Effective Income Tax Rate Reconciliation Gilti EffectiveIncomeTaxRateReconciliationGILTI	0.006
CY2020	lkq	Effective Income Tax Rate Reconciliation Gilti EffectiveIncomeTaxRateReconciliationGILTI	0.004
CY2018	lkq	Effective Income Tax Rate Reconciliation Gilti EffectiveIncomeTaxRateReconciliationGILTI	0.003
CY2020Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	807000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	59241000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	51869000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	34143000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	31053000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	15591000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	12679000	USD
CY2020Q4	lkq	Deferred Tax Assets Tax Deferred Accounts Receivable DeferredTaxAssetsTaxDeferredAccountsReceivable	15449000	USD
CY2019Q4	lkq	Deferred Tax Assets Tax Deferred Accounts Receivable DeferredTaxAssetsTaxDeferredAccountsReceivable	14025000	USD
CY2020Q4	lkq	Interest Expense Deduction Carry Forward InterestExpenseDeductionCarryForward	34485000	USD
CY2019Q4	lkq	Interest Expense Deduction Carry Forward InterestExpenseDeductionCarryForward	25448000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	5362000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	4755000	USD
CY2020	lkq	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	331327000	USD
CY2019	lkq	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	303705000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	27538000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	16287000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	24961000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	11777000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	548097000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	471598000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	60275000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	41815000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	487822000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	429783000	USD
CY2020Q4	lkq	Deferred Tax Liabilities Goodwill And Intangible Assets Excluding Trade Name Intangible DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsExcludingTradeNameIntangible	229330000	USD
CY2019Q4	lkq	Deferred Tax Liabilities Goodwill And Intangible Assets Excluding Trade Name Intangible DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsExcludingTradeNameIntangible	219879000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	95007000	USD
CY2020Q4	lkq	Deferred Tax Liabilities Trade Name Intangible DeferredTaxLiabilitiesTradeNameIntangible	108883000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	100461000	USD
CY2019Q4	lkq	Deferred Tax Liabilities Trade Name Intangible DeferredTaxLiabilitiesTradeNameIntangible	108039000	USD
CY2020	lkq	Deferred Tax Liabilities Operating Lease Assets Net DeferredTaxLiabilitiesOperatingLeaseAssetsNet	317694000	USD
CY2019	lkq	Deferred Tax Liabilities Operating Lease Assets Net DeferredTaxLiabilitiesOperatingLeaseAssetsNet	292498000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	11364000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	8916000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	762278000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	729793000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	274456000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	300010000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	28000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	16000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	1000000	USD
CY2020Q4	lkq	Interest Expense Deduction Carry Forward InterestExpenseDeductionCarryForward	34000000	USD
CY2019Q4	lkq	Interest Expense Deduction Carry Forward InterestExpenseDeductionCarryForward	25000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	60000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	42000000	USD
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	18000000	USD
CY2020Q4	lkq	Valuation Allowanceduetointerestexpensedeductions ValuationAllowanceduetointerestexpensedeductions	9000000	USD
CY2020Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	8000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2317000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1237000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1690000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	1376000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1147000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	50000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	5000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	297000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	297000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	458000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	958000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation	99000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation	49000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2308000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2317000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1237000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	1000000	USD
CY2020Q4	lkq	Unrecognized Tax Benefits That Would Impact Deferred Taxes UnrecognizedTaxBenefitsThatWouldImpactDeferredTaxes	1000000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1000000	USD
CY2021Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	1000000	USD
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	4
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3
CY2020	us-gaap	Revenues Revenues	11628830000	USD
CY2020	lkq	Segment Ebitda SegmentEBITDA	1368759000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	299497000	USD
CY2019	us-gaap	Revenues Revenues	12506109000	USD
CY2019	lkq	Segment Ebitda SegmentEBITDA	1328361000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	314406000	USD
CY2018	us-gaap	Revenues Revenues	11876674000	USD
CY2018	lkq	Segment Ebitda SegmentEBITDA	1251399000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	294077000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	640414000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	545034000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	483168000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	1888000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	2800000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	3050000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	103000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	974000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	638423000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	541260000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	480118000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-95000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	1619000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-4397000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	103000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	974000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2020	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	638621000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	540615000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	484515000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	272292000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	290770000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	274213000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	21672000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	21312000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	19864000	USD
CY2020	lkq	Depreciationand Amortization Restructuring Expenses DepreciationandAmortizationRestructuringExpenses	5533000	USD
CY2019	lkq	Depreciationand Amortization Restructuring Expenses DepreciationandAmortizationRestructuringExpenses	2324000	USD
CY2018	lkq	Depreciationand Amortization Restructuring Expenses DepreciationandAmortizationRestructuringExpenses	0	USD
CY2020	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-101874000	USD
CY2019	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-136274000	USD
CY2019Q4	lkq	Restructuring And Acquisition Related Charges RestructuringAndAcquisitionRelatedCharges	20000000	USD
CY2019Q1	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	15000000	USD
CY2018	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-144536000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-12751000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	128000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1350000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	249498000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	215330000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	191395000	USD
CY2020	lkq	Earnings Before Interest Taxes Depreciation And Amortization EarningsBeforeInterestTaxesDepreciationAndAmortization	1302241000	USD
CY2019	lkq	Earnings Before Interest Taxes Depreciation And Amortization EarningsBeforeInterestTaxesDepreciationAndAmortization	1206497000	USD
CY2018	lkq	Earnings Before Interest Taxes Depreciation And Amortization EarningsBeforeInterestTaxesDepreciationAndAmortization	1115873000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5012000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-32277000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-64471000	USD
CY2020	us-gaap	Other Nonrecurring Gain OtherNonrecurringGain	0	USD
CY2019	us-gaap	Other Nonrecurring Gain OtherNonrecurringGain	12063000	USD
CY2018	us-gaap	Other Nonrecurring Gain OtherNonrecurringGain	0	USD
CY2020	lkq	Bargain Purchase On Business Combination And Gain Loss On Previously Held Equity Interests And Investments BargainPurchaseOnBusinessCombinationAndGainLossOnPreviouslyHeldEquityInterestsAndInvestments	0	USD
CY2019	lkq	Bargain Purchase On Business Combination And Gain Loss On Previously Held Equity Interests And Investments BargainPurchaseOnBusinessCombinationAndGainLossOnPreviouslyHeldEquityInterestsAndInvestments	1157000	USD
CY2018	lkq	Bargain Purchase On Business Combination And Gain Loss On Previously Held Equity Interests And Investments BargainPurchaseOnBusinessCombinationAndGainLossOnPreviouslyHeldEquityInterestsAndInvestments	2418000	USD
CY2020	lkq	Restructuring Charges And Business Combination Acquisition Related Costsnetof Restructuring Depreciation RestructuringChargesAndBusinessCombinationAcquisitionRelatedCostsnetofRestructuringDepreciation	60630000	USD
CY2019	lkq	Restructuring Charges And Business Combination Acquisition Related Costsnetof Restructuring Depreciation RestructuringChargesAndBusinessCombinationAcquisitionRelatedCostsnetofRestructuringDepreciation	34658000	USD
CY2018	lkq	Restructuring Charges And Business Combination Acquisition Related Costsnetof Restructuring Depreciation RestructuringChargesAndBusinessCombinationAcquisitionRelatedCostsnetofRestructuringDepreciation	32428000	USD
CY2020	lkq	Costof Goods Sold Restructuring Charges CostofGoodsSoldRestructuringCharges	7141000	USD
CY2019	lkq	Costof Goods Sold Restructuring Charges CostofGoodsSoldRestructuringCharges	20654000	USD
CY2018	lkq	Costof Goods Sold Restructuring Charges CostofGoodsSoldRestructuringCharges	0	USD
CY2020	lkq	Business Combination Adjustment Inventory BusinessCombinationAdjustmentInventory	0	USD
CY2019	lkq	Business Combination Adjustment Inventory BusinessCombinationAdjustmentInventory	0	USD
CY2018	lkq	Business Combination Adjustment Inventory BusinessCombinationAdjustmentInventory	403000	USD
CY2020	lkq	Loss On Disposal Of Businesses And Impairment Of Net Assets Held For Sale And Goodwill LossOnDisposalOfBusinessesAndImpairmentOfNetAssetsHeldForSaleAndGoodwill	3174000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	47102000	USD
CY2018	lkq	Gain Loss On Disposal Of Businesses And Impairment Of Net Assets Held For Sale And Goodwill GainLossOnDisposalOfBusinessesAndImpairmentOfNetAssetsHeldForSaleAndGoodwill	35682000	USD
CY2020	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	585000	USD
CY2019	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	393000	USD
CY2018	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-208000	USD
CY2020	lkq	Segment Ebitda SegmentEBITDA	1368759000	USD
CY2019	lkq	Segment Ebitda SegmentEBITDA	1328361000	USD
CY2018	lkq	Segment Ebitda SegmentEBITDA	1251399000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	172695000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	265730000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	250027000	USD
CY2020Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	1073389000	USD
CY2019Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	1131132000	USD
CY2018Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	1154083000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	2414612000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	2772777000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	2836075000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1248703000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1234400000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1220162000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1353124000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1308511000	USD
CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	0	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	155224000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	139243000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	179169000	USD
CY2020Q4	lkq	Other Unallocated Assets OtherUnallocatedAssets	6115481000	USD
CY2019Q4	lkq	Other Unallocated Assets OtherUnallocatedAssets	6193893000	USD
CY2018Q4	lkq	Other Unallocated Assets OtherUnallocatedAssets	6003913000	USD
CY2020Q4	us-gaap	Assets Assets	12360533000	USD
CY2019Q4	us-gaap	Assets Assets	12779956000	USD
CY2018Q4	us-gaap	Assets Assets	11393402000	USD
CY2020	us-gaap	Revenues Revenues	11628830000	USD
CY2019	us-gaap	Revenues Revenues	12506109000	USD
CY2018	us-gaap	Revenues Revenues	11876674000	USD
CY2020Q4	us-gaap	Noncurrent Assets NoncurrentAssets	2601827000	USD
CY2019Q4	us-gaap	Noncurrent Assets NoncurrentAssets	2542911000	USD
CY2018Q4	us-gaap	Noncurrent Assets NoncurrentAssets	1220162000	USD
CY2020Q1	lkq	Restructuring And Acquisition Related Charges RestructuringAndAcquisitionRelatedCharges	7000000	USD
CY2020Q2	lkq	Restructuring And Acquisition Related Charges RestructuringAndAcquisitionRelatedCharges	31000000	USD
CY2020Q3	lkq	Restructuring And Acquisition Related Charges RestructuringAndAcquisitionRelatedCharges	21000000	USD
CY2020Q4	lkq	Restructuring And Acquisition Related Charges RestructuringAndAcquisitionRelatedCharges	14000000	USD
CY2019Q2	lkq	Restructuring Charges And Business Combination Acquisition Related Costsnetof Restructuring Depreciation RestructuringChargesAndBusinessCombinationAcquisitionRelatedCostsnetofRestructuringDepreciation	8000000	USD
CY2019Q3	lkq	Restructuring And Acquisition Related Charges RestructuringAndAcquisitionRelatedCharges	26000000	USD
CY2019Q2	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	33000000	USD
CY2019Q4	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	2000000	USD
CY2019Q3	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	-4000000	USD
CY2019Q4	us-gaap	Other Nonrecurring Gain OtherNonrecurringGain	12000000	USD

Files In Submission

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2019 Q4 Form 10-K Financial Statement

#000106569621000010 Filed on February 26, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LKQ LKQ CORP Stock $lkq

2019 Q4 Form 10-K Financial Statement

#000106569621000010 Filed on February 26, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LKQ
LKQ CORP Stock $lkq