$LAD
Lithia Motors Inc Stock $lad

$lad Overview Financials Valuation SEC Filings Company Website

2019 Q1 Form 10-K Financial Statement

#000102312820000018 Filed on February 21, 2020

Income Statement

Concept	2019 Q1	2018 Q4	2017 Q4
Revenue	$2.850B	$2.973B	$2.703B
YoY Change	7.14%	10.0%	17.93%
Cost Of Revenue	$2.399B	$2.531B	$2.307B
YoY Change	6.55%	9.73%	17.87%
Gross Profit	$450.7M	$441.9M	$396.1M
YoY Change	10.44%	11.56%	18.31%
Gross Profit Margin	15.82%	14.86%	14.65%
Selling, General & Admin	$321.8M	$312.8M	$267.1M
YoY Change	8.17%	17.11%	12.8%
% of Gross Profit	71.4%	70.79%	67.43%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$19.80M	$20.10M	$16.10M
YoY Change	17.86%	24.84%	23.85%
% of Gross Profit	4.39%	4.55%	4.06%
Operating Expenses	$321.8M	$332.9M	$283.2M
YoY Change	8.17%	17.55%	13.37%
Operating Profit	$108.6M	$109.0M	$112.9M
YoY Change	15.78%	-3.45%	32.82%
Interest Expense	-$33.40M	-$32.50M	-$22.40M
YoY Change	32.02%	45.09%	62.32%
% of Operating Profit	-30.76%	-29.82%	-19.84%
Other Income/Expense, Net	$2.600M	$3.400M	$800.0K
YoY Change	100.0%	325.0%	-150.0%
Pretax Income	$77.80M	$78.00M	$91.40M
YoY Change	11.46%	-14.66%	38.28%
Income Tax	$21.40M	$33.90M	-$30.90M
% Of Pretax Income	27.51%	43.46%	-33.81%
Net Earnings	$56.40M	$59.90M	$89.40M
YoY Change	8.25%	-33.0%	74.27%
Net Earnings / Revenue	1.98%	2.01%	3.31%
Basic Earnings Per Share	$2.43
Diluted Earnings Per Share	$2.42	$2.527M	$3.562M
COMMON SHARES
Basic Shares Outstanding	23.20M shares
Diluted Shares Outstanding	23.20M shares

Balance Sheet

Concept	2019 Q1	2018 Q4	2017 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$45.00M	$31.60M	$57.30M
YoY Change	-34.78%	-44.85%	13.92%
Cash & Equivalents	$45.00M	$31.60M	$57.30M
Short-Term Investments
Other Short-Term Assets	$50.90M	$65.10M	$70.90M
YoY Change	-10.53%	-8.18%	52.11%
Inventory	$2.441B	$2.365B	$2.133B
Prepaid Expenses
Receivables	$491.0M	$529.4M	$521.9M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$3.028B	$2.991B	$2.783B
YoY Change	1.9%	7.5%	21.67%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.454B	$1.448B	$1.185B
YoY Change	19.13%	22.17%	17.8%
Goodwill	$456.8M	$434.9M	$256.3M
YoY Change	78.24%	69.68%	-1.2%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$194.8M	$221.0M	$271.8M
YoY Change	-56.85%	-18.69%	153.64%
Total Long-Term Assets	$2.616B	$2.393B	$1.900B
YoY Change	23.65%	25.91%	22.05%
TOTAL ASSETS
Total Short-Term Assets	$3.028B	$2.991B	$2.783B
Total Long-Term Assets	$2.616B	$2.393B	$1.900B
Total Assets	$5.644B	$5.384B	$4.683B
YoY Change	10.94%	14.97%	21.82%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$119.3M	$126.3M	$111.4M
YoY Change	2.03%	13.38%	25.99%
Accrued Expenses	$310.2M	$283.6M	$251.6M
YoY Change	29.16%	12.72%	19.18%
Deferred Revenue
YoY Change
Short-Term Debt	$2.126B	$2.058B	$1.919B
YoY Change	7.49%	7.23%	19.83%
Long-Term Debt Due	$24.60M	$25.90M	$18.90M
YoY Change	-85.44%	37.04%	-10.0%
Total Short-Term Liabilities	$2.585B	$2.494B	$2.301B
YoY Change	3.25%	8.37%	19.72%
LONG-TERM LIABILITIES
Long-Term Debt	$1.296B	$1.358B	$1.029B
YoY Change	9.69%	32.06%	111.97%
Other Long-Term Liabilities	$111.9M	$122.2M	$111.0M
YoY Change	3.23%	10.09%	10.49%
Total Long-Term Liabilities	$111.9M	$122.2M	$111.0M
YoY Change	3.23%	10.09%	-81.05%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.585B	$2.494B	$2.301B
Total Long-Term Liabilities	$111.9M	$122.2M	$111.0M
Total Liabilities	$4.446B	$4.187B	$3.600B
YoY Change	12.27%	16.3%	22.72%
SHAREHOLDERS EQUITY
Retained Earnings	$1.163B	$1.162B	$922.7M
YoY Change	19.97%	25.95%	31.1%
Common Stock	$28.00M	$35.00M	$11.30M
YoY Change	92.33%	209.73%	-72.59%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.251B	$1.197B	$1.083B
YoY Change
Total Liabilities & Shareholders Equity	$5.644B	$5.384B	$4.683B
YoY Change	10.94%	14.97%	21.82%

Cashflow Statement

Concept	2019 Q1	2018 Q4	2017 Q4
OPERATING ACTIVITIES
Net Income	$56.40M	$59.90M	$89.40M
YoY Change	8.25%	-33.0%	74.27%
Depreciation, Depletion And Amortization	$19.80M	$20.10M	$16.10M
YoY Change	17.86%	24.84%	23.85%
Cash From Operating Activities	$77.20M	$140.4M	-$111.6M
YoY Change	57.87%	-225.81%	12.84%
INVESTING ACTIVITIES
Capital Expenditures	$29.10M	-$44.60M	-$33.20M
YoY Change	-30.71%	34.34%	71.13%
Acquisitions	$0.00
YoY Change	-100.0%
Other Investing Activities	-$6.200M	$2.100M	-$40.10M
YoY Change	-98.13%	-105.24%	-6.31%
Cash From Investing Activities	-$35.30M	-$42.50M	-$73.30M
YoY Change	-90.55%	-42.02%	17.85%
FINANCING ACTIVITIES
Cash Dividend Paid	$6.700M
YoY Change	-1.47%
Common Stock Issuance & Retirement, Net	$800.0K
YoY Change	-87.5%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$28.50M	-97.80M	203.6M
YoY Change	-108.47%	-148.04%	8.7%
NET CHANGE
Cash From Operating Activities	$77.20M	140.4M	-111.6M
Cash From Investing Activities	-$35.30M	-42.50M	-73.30M
Cash From Financing Activities	-$28.50M	-97.80M	203.6M
Net Change In Cash	$13.40M	100.0K	18.70M
YoY Change	13.56%	-99.47%	-28.63%
FREE CASH FLOW
Cash From Operating Activities	$77.20M	$140.4M	-$111.6M
Capital Expenditures	$29.10M	-$44.60M	-$33.20M
Free Cash Flow	$48.10M	$185.0M	-$78.40M
YoY Change	597.1%	-335.97%	-1.38%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0001023128
CY2019Q4	lad	Current Ratio CurrentRatio	1.31
CY2019Q4	lad	Debt Covenant Current Ratio DebtCovenantCurrentRatio	1.10
CY2019Q4	lad	Debt Covenant Fixed Charge Coverage Ratio DebtCovenantFixedChargeCoverageRatio	1.20
CY2019Q4	lad	Debt Covenant Leverage Ratio DebtCovenantLeverageRatio	5.75
CY2019Q4	lad	Fixed Charge Coverage Ratio FixedChargeCoverageRatio	2.88
CY2019Q4	lad	Leverage Ratio LeverageRatio	2.62
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CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	-300000	USD
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CY2019	dei	Entity File Number EntityFileNumber	001-14733
CY2019	dei	Entity Registrant Name EntityRegistrantName	LITHIA MOTORS INC
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CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	93-0572810
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	150 N. Bartlett Street
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Medford
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	OR
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	97501
CY2019	dei	City Area Code CityAreaCode	541
CY2019	dei	Local Phone Number LocalPhoneNumber	776-6401
CY2019	dei	Security12b Title Security12bTitle	Class A common stock without par value
CY2019	dei	Trading Symbol TradingSymbol	LAD
CY2019	dei	Security Exchange Name SecurityExchangeName	NYSE
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CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	11300000	USD
CY2017	lad	Adjustmentsto Additional Paidin Capital Stock Repurchase Option Premium Paid AdjustmentstoAdditionalPaidinCapitalStockRepurchaseOptionPremiumPaid	33400000	USD
CY2017	us-gaap	Dividends Dividends	26500000	USD
CY2017	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	2100000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1083200000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	265700000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	10100000	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	148900000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	13400000	USD
CY2018	us-gaap	Dividends Dividends	27700000	USD
CY2018Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	1400000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1197200000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	271500000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-700000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	11000000.0	USD
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	3200000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	16200000	USD
CY2019	lad	Adjustmentsto Additional Paidin Capital Stock Repurchase Option Premium Received Paid AdjustmentstoAdditionalPaidinCapitalStockRepurchaseOptionPremiumReceivedPaid	2400000	USD
CY2019	us-gaap	Dividends Dividends	27600000	USD
CY2019Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	900000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1467700000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	271500000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	265700000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	245200000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	2600000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1300000	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	82400000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	75400000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	57700000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	16200000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	13300000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	11300000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	100000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-200000	USD
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	400000	USD
CY2019	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	9700000	USD
CY2018	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	15100000	USD
CY2017	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	5100000	USD
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	40100000	USD
CY2018	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	33000000.0	USD
CY2017	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-2800000	USD
CY2019	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-24400000	USD
CY2018	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-4700000	USD
CY2017	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	57400000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	19700000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	108900000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	193100000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-12000000.0	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	16000000.0	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	3100000	USD
CY2019	lad	Increase Decreasein Floor Plan Notes Payable IncreaseDecreaseinFloorPlanNotesPayable	-100700000	USD
CY2018	lad	Increase Decreasein Floor Plan Notes Payable IncreaseDecreaseinFloorPlanNotesPayable	-196900000	USD
CY2017	lad	Increase Decreasein Floor Plan Notes Payable IncreaseDecreaseinFloorPlanNotesPayable	-20300000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-1800000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	15100000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	20000000.0	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-38000000.0	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	28900000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	37200000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	18900000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	25200000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	19100000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	499500000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	519700000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	148900000	USD
CY2019	us-gaap	Proceeds From Sale Of Notes Receivable ProceedsFromSaleOfNotesReceivable	12500000	USD
CY2018	us-gaap	Proceeds From Sale Of Notes Receivable ProceedsFromSaleOfNotesReceivable	0	USD
CY2017	us-gaap	Proceeds From Sale Of Notes Receivable ProceedsFromSaleOfNotesReceivable	0	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	124900000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	158000000.0	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	105400000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1500000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	3100000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	15300000	USD
CY2019	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	7200000	USD
CY2018	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	62700000	USD
CY2017	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	8600000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	366600000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	373800000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	460400000	USD
CY2019	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	46700000	USD
CY2018	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	34300000	USD
CY2017	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	20900000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-438000000.0	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-557100000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-538200000	USD
CY2019	lad	Increase Decrease In Vehicle Floor Plan Payable Non Trade Net IncreaseDecreaseInVehicleFloorPlanPayableNonTradeNet	-54600000	USD
CY2018	lad	Increase Decrease In Vehicle Floor Plan Payable Non Trade Net IncreaseDecreaseInVehicleFloorPlanPayableNonTradeNet	-21900000	USD
CY2017	lad	Increase Decrease In Vehicle Floor Plan Payable Non Trade Net IncreaseDecreaseInVehicleFloorPlanPayableNonTradeNet	241500000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	3167000000.0	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	2691400000	USD
CY2017	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	1754500000	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	3481600000	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	2499600000	USD
CY2017	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	1836200000	USD
CY2019	lad	Repayments Of Longterm Debt Scheduled Payments RepaymentsOfLongtermDebtScheduledPayments	26000000.0	USD
CY2018	lad	Repayments Of Longterm Debt Scheduled Payments RepaymentsOfLongtermDebtScheduledPayments	26500000	USD
CY2017	lad	Repayments Of Longterm Debt Scheduled Payments RepaymentsOfLongtermDebtScheduledPayments	18200000	USD
CY2019	lad	Repayments Of Longterm Debt Other Payments RepaymentsOfLongtermDebtOtherPayments	11000000.0	USD
CY2018	lad	Repayments Of Longterm Debt Other Payments RepaymentsOfLongtermDebtOtherPayments	26100000	USD
CY2017	lad	Repayments Of Longterm Debt Other Payments RepaymentsOfLongtermDebtOtherPayments	50300000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	420300000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	62100000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	395900000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	5800000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	400000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	4700000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	11000000.0	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	10100000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	7500000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3200000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	148900000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	33800000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	27600000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	27700000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	26500000	USD
CY2019	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
CY2018	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	800000	USD
CY2017	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	2400000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	52400000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-33400000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-9100000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	11700000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	396300000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-25700000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	7000000.0	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	31600000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	57300000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	50300000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	84000000.0	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	31600000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	57300000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	135800000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	117100000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	68900000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	38400000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	32900000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	127300000	USD
CY2019	lad	Cash Paidfor Repaymentsof Debt Dueto Disposal Group CashPaidforRepaymentsofDebtDuetoDisposalGroup	18600000	USD
CY2018	lad	Cash Paidfor Repaymentsof Debt Dueto Disposal Group CashPaidforRepaymentsofDebtDuetoDisposalGroup	33100000	USD
CY2017	lad	Cash Paidfor Repaymentsof Debt Dueto Disposal Group CashPaidforRepaymentsofDebtDuetoDisposalGroup	3700000	USD
CY2019	us-gaap	Notes Issued1 NotesIssued1	26400000	USD
CY2018	us-gaap	Notes Issued1 NotesIssued1	125100000	USD
CY2017	us-gaap	Notes Issued1 NotesIssued1	1800000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	10800000	USD
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	84300000	USD
CY2019	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	0	USD
CY2018	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	0	USD
CY2017	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	2100000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	260300000	USD
CY2019Q4	us-gaap	Number Of Stores NumberOfStores	187	store
CY2019Q4	lad	Number Of New Vehicle Brands NumberOfNewVehicleBrands	30	brand
CY2019Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	19	state
CY2019	lad	Accounts Receivable Threshold To Bear Interest Period AccountsReceivableThresholdToBearInterestPeriod	P60D
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	2300000	USD
CY2018	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1300000	USD
CY2017	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	500000	USD
CY2019	lad	Advertising Expense Gross AdvertisingExpenseGross	139800000	USD
CY2018	lad	Advertising Expense Gross AdvertisingExpenseGross	134200000	USD
CY2017	lad	Advertising Expense Gross AdvertisingExpenseGross	116100000	USD
CY2019	us-gaap	Cooperative Advertising Amount CooperativeAdvertisingAmount	27900000	USD
CY2018	us-gaap	Cooperative Advertising Amount CooperativeAdvertisingAmount	25500000	USD
CY2017	us-gaap	Cooperative Advertising Amount CooperativeAdvertisingAmount	22800000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	111900000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	108700000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	93300000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	8900000	USD
CY2019	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;font-weight:bold;">Concentration of Risk and Uncertainties</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;">We purchase substantially all of our new vehicles and inventory from various manufacturers at the prevailing prices charged by auto manufacturers to all franchised dealers. Our overall sales could be impacted by the auto manufacturers’ inability or unwillingness to supply dealerships with an adequate supply of popular models.</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;">We depend on our manufacturers to provide a supply of vehicles which supports expected sales levels. In the event that manufacturers are unable to supply the needed level of vehicles, our financial performance may be adversely impacted. </span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;">We depend on our manufacturers to deliver high-quality, defect-free vehicles. In the event that manufacturers experience future quality issues, our financial performance may be adversely impacted. </span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;">We are subject to a concentration of risk in the event of financial distress, including potential reorganization or bankruptcy, of a major vehicle manufacturer. Our sales volume could be materially adversely impacted by the manufacturers’ or distributors’ inability to supply the stores with an adequate supply of vehicles. We also receive incentives and rebates from our manufacturers, including cash allowances, financing programs, discounts, holdbacks and other incentives. These incentives are recorded as accounts receivable in our Consolidated Balance Sheets until payment is received. Our financial condition could be materially adversely impacted by the manufacturers’ or distributors’ inability to continue to offer these incentives and rebates at substantially similar terms, or to pay our outstanding receivables. </span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;">We enter into Franchise Agreements with the manufacturers. The Franchise Agreements generally limit the location of the dealership and provide the auto manufacturer approval rights over changes in dealership management and ownership. The auto manufacturers are also entitled to terminate the Franchise Agreement if the dealership is in material breach of the terms. Our ability to expand operations depends, in part, on obtaining consents of the manufacturers for the acquisition of additional dealerships. See also “</span><span style="font-family:Times New Roman;font-size:10pt;font-weight:normal;">Goodwill</span><span style="font-family:Times New Roman;font-size:10pt;">” and “</span><span style="font-family:Times New Roman;font-size:10pt;font-weight:normal;">Franchise Value</span><span style="font-family:Times New Roman;font-size:10pt;">” above. </span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;">We have a credit facility with a syndicate of </span><span style="font-family:Times New Roman;font-size:10pt;"><span>19</span></span><span style="font-family:Times New Roman;font-size:10pt;"> financial institutions, including </span><span style="font-family:Times New Roman;font-size:10pt;"><span>seven</span></span><span style="font-family:Times New Roman;font-size:10pt;"> manufacturer-affiliated finance companies. Several of these financial institutions also provide vehicle financing for certain new vehicles, vehicles that are designated for use as service loaners and mortgage financing. This credit facility is the primary source of floor plan financing for our new vehicle inventory and also provides used vehicle financing and a revolving line of credit. The term of the facility extends through </span><span style="font-family:Times New Roman;font-size:10pt;color:#000000;">January 2025</span><span style="font-family:Times New Roman;font-size:10pt;">. At maturity, our financial condition could be materially adversely impacted if lenders are unable to provide credit that has typically been extended to us or with terms unacceptable to us. Our financial condition could be materially adversely impacted if these providers incur losses in the future or undergo funding limitations. See </span><span style="font-family:Times New Roman;font-size:10pt;font-weight:normal;text-decoration:none;">Note 6</span><span style="font-family:Times New Roman;font-size:10pt;">.</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;">We anticipate continued organic growth and growth through acquisitions. This growth will require additional credit which may be unavailable or with terms unacceptable to us. If these events were to occur, we may not be able to borrow sufficient funds to facilitate our growth.</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;"><br/></span></div>
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;font-weight:bold;">Use of Estimates</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;">The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the Consolidated Financial Statements and related notes to financial statements. Changes in such estimates may affect amounts reported in future periods. </span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;">Estimates are used in the calculation of certain reserves maintained for charge-backs on estimated cancellations of service contracts; life, accident and disability insurance policies; finance fees from customer financing contracts and uncollectible accounts receivable. </span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;">We also use estimates in the calculation of various expenses, accruals and reserves, including anticipated losses related to workers’ compensation insurance; anticipated losses related to self-insurance components of our property and casualty and medical insurance; self-insured lifetime lube, oil and filter service contracts; discretionary employee bonuses, the Transition Agreement with Sidney B. DeBoer, our Chairman of the Board; warranties provided on certain products and services; legal reserves and stock-based compensation. We also make certain estimates regarding the assessment of the recoverability of long-lived assets, indefinite-lived intangible assets and deferred tax assets.</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;"><br/></span></div>We offer a limited warranty on the sale of most retail used vehicles. This warranty is based on mileage and time. We also offer a mileage and time based warranty on parts used in our service repair work and on tire purchases. The cost that may be incurred for these warranties is estimated at the time the related revenue is recorded. A reserve for these warranty liabilities is estimated based on current sales levels, warranty experience rates and estimated costs per claim.
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	600000	USD
CY2018Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	500000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	171500000	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	149600000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	25900000	USD
CY2018	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	21900000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	9200000	USD
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2019Q4	us-gaap	Accounts Receivable Gross AccountsReceivableGross	567400000	USD
CY2018Q4	us-gaap	Accounts Receivable Gross AccountsReceivableGross	573700000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	7300000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	7200000	USD
CY2019Q4	us-gaap	Accounts Receivable Gross Noncurrent AccountsReceivableGrossNoncurrent	55100000	USD
CY2018Q4	us-gaap	Accounts Receivable Gross Noncurrent AccountsReceivableGrossNoncurrent	37100000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	505000000.0	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	529400000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	2433700000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	2365300000	USD
CY2019Q4	lad	Property Plant And Equipment Gross Excluding Construction In Progress PropertyPlantAndEquipmentGrossExcludingConstructionInProgress	1861300000	USD
CY2018Q4	lad	Property Plant And Equipment Gross Excluding Construction In Progress PropertyPlantAndEquipmentGrossExcludingConstructionInProgress	1631100000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	284300000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	240500000	USD
CY2019Q4	lad	Property Plant And Equipment Net Before Construction In Progress PropertyPlantAndEquipmentNetBeforeConstructionInProgress	1577000000.0	USD
CY2018Q4	lad	Property Plant And Equipment Net Before Construction In Progress PropertyPlantAndEquipmentNetBeforeConstructionInProgress	1390600000	USD
CY2019Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	34700000	USD
CY2018Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	57400000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1611700000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1448000000.0	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	500000	USD
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	1300000	USD
CY2017	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2018Q4	us-gaap	Goodwill Goodwill	434900000	USD
CY2019	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	5100000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	17400000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	1700000	USD
CY2019	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	1100000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	454600000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	256300000	USD
CY2018	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	180700000	USD
CY2018	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	2100000	USD
CY2008Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	299300000	USD
CY2018	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	180700000	USD
CY2019	lad	Goodwill Acquired During Period And Purchase Accounting Adjustments GoodwillAcquiredDuringPeriodAndPurchaseAccountingAdjustments	22500000	USD
CY2017Q4	us-gaap	Indefinite Lived Franchise Rights IndefiniteLivedFranchiseRights	187000000.0	USD
CY2018	us-gaap	Indefinitelived Intangible Assets Acquired IndefinitelivedIntangibleAssetsAcquired	103500000	USD
CY2018	us-gaap	Indefinite Lived Intangible Assets Purchase Accounting Adjustments IndefiniteLivedIntangibleAssetsPurchaseAccountingAdjustments	-1800000	USD
CY2018Q4	us-gaap	Indefinite Lived Franchise Rights IndefiniteLivedFranchiseRights	288700000	USD
CY2019	us-gaap	Indefinitelived Intangible Assets Acquired IndefinitelivedIntangibleAssetsAcquired	20900000	USD
CY2019	us-gaap	Indefinite Lived Intangible Assets Purchase Accounting Adjustments IndefiniteLivedIntangibleAssetsPurchaseAccountingAdjustments	3500000	USD
CY2019	us-gaap	Indefinite Lived Intangible Assets Written Off Related To Sale Of Business Unit IndefiniteLivedIntangibleAssetsWrittenOffRelatedToSaleOfBusinessUnit	6000000.0	USD
CY2019	lad	Franchise Value Impairment FranchiseValueImpairment	400000	USD
CY2019Q4	us-gaap	Indefinite Lived Franchise Rights IndefiniteLivedFranchiseRights	306700000	USD
CY2018	us-gaap	Indefinitelived Intangible Assets Acquired IndefinitelivedIntangibleAssetsAcquired	103500000	USD
CY2019	lad	Indefinitelived Intangible Assets Acquired And Purchase Accounting Adjustments IndefinitelivedIntangibleAssetsAcquiredAndPurchaseAccountingAdjustments	24400000	USD
CY2019Q4	lad	Floor Plan Notes Payable Non Trade FloorPlanNotesPayableNonTrade	1642400000	USD
CY2018Q4	lad	Floor Plan Notes Payable Non Trade FloorPlanNotesPayableNonTrade	1733300000	USD
CY2019Q4	lad	Floor Plan Notes Payable FloorPlanNotesPayable	425200000	USD
CY2018Q4	lad	Floor Plan Notes Payable FloorPlanNotesPayable	324400000	USD
CY2019Q4	lad	Charge Backs Future Minimum Payments Due In Five Years ChargeBacksFutureMinimumPaymentsDueInFiveYears	500000	USD
CY2019Q4	lad	Charge Backs Future Minimum Payments Due Thereafter ChargeBacksFutureMinimumPaymentsDueThereafter	0	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1430600000	USD
CY2019Q4	lad	Floor Plan Debt FloorPlanDebt	2067600000	USD
CY2018Q4	lad	Floor Plan Debt FloorPlanDebt	2057700000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1480300000	USD
CY2018Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1390100000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	10400000	USD
CY2018Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	6000000.0	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	39300000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	25900000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1358200000	USD
CY2019Q4	lad	Floor Plan Notes Payable FloorPlanNotesPayable	425200000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	41900000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	49500000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	65800000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	60400000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	77600000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1036100000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	1331300000	USD
CY2019Q4	lad	Charge Backs Liabilities ChargeBacksLiabilities	57000000.0	USD
CY2019Q4	lad	Charge Backs Future Minimum Payments Current ChargeBacksFutureMinimumPaymentsCurrent	31200000	USD
CY2019Q4	lad	Charge Backs Future Minimum Payments Due In Two Years ChargeBacksFutureMinimumPaymentsDueInTwoYears	16300000	USD
CY2019Q4	lad	Charge Backs Future Minimum Payments Due In Three Years ChargeBacksFutureMinimumPaymentsDueInThreeYears	6800000	USD
CY2019Q4	lad	Charge Backs Future Minimum Payments Due In Four Years ChargeBacksFutureMinimumPaymentsDueInFourYears	2200000	USD
CY2019Q4	lad	Charge Backs Liabilities ChargeBacksLiabilities	57000000.0	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	172000000.0	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	34300000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	27400000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	21900000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	18200000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	15400000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	54800000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	172000000.0	USD
CY2019Q4	lad	Contracts Obligations Reserve ContractsObligationsReserve	2900000	USD
CY2019Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	34400000	USD
CY2018Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	39900000	USD
CY2019	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	40356	shares
CY2019	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	40356	shares
CY2018	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	30119	shares
CY2017	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	32457	shares
CY2019Q2	lad	Payments For Repurchase Of Capped Call Options PaymentsForRepurchaseOfCappedCallOptions	36500000	USD
CY2019	lad	Proceeds From Capped Call Options Expirations ProceedsFromCappedCallOptionsExpirations	38900000	USD
CY2018Q1	us-gaap	Dividends Common Stock DividendsCommonStock	6700000	USD
CY2018Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.29
CY2018Q2	us-gaap	Dividends Common Stock DividendsCommonStock	7200000	USD
CY2018Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.29
CY2018Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.27
CY2017Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.25
CY2017Q1	us-gaap	Dividends Common Stock DividendsCommonStock	6300000	USD
CY2017Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.27
CY2017Q2	us-gaap	Dividends Common Stock DividendsCommonStock	6800000	USD
CY2017Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.27
CY2017Q3	us-gaap	Dividends Common Stock DividendsCommonStock	6700000	USD
CY2017Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.27
CY2017Q4	us-gaap	Dividends Common Stock DividendsCommonStock	6700000	USD
CY2018Q3	us-gaap	Dividends Common Stock DividendsCommonStock	7000000.0	USD
CY2018Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.29
CY2018Q4	us-gaap	Dividends Common Stock DividendsCommonStock	6800000	USD
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.29
CY2019Q1	us-gaap	Dividends Common Stock DividendsCommonStock	6700000	USD
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
CY2019Q2	us-gaap	Dividends Common Stock DividendsCommonStock	7000000.0	USD
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
CY2019Q3	us-gaap	Dividends Common Stock DividendsCommonStock	7000000.0	USD
CY2019Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
CY2019Q4	us-gaap	Dividends Common Stock DividendsCommonStock	6900000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	9800000	USD
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	5700000	USD
CY2017	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	5800000	USD
CY2019	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	900000	USD
CY2018	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	1300000	USD
CY2017	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	1100000	USD
CY2019	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	300000	USD
CY2018	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	800000	USD
CY2017	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	1700000	USD
CY2019	lad	Guaranteed Annual Return GuaranteedAnnualReturn	0.0500
CY2018	lad	Guaranteed Annual Return GuaranteedAnnualReturn	0.0500
CY2017	lad	Guaranteed Annual Return GuaranteedAnnualReturn	0.0500
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Grant Date Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValue	75.73
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Grant Date Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValue	86.84
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Grant Date Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValue	99.24
CY2019Q4	lad	Weighted Average Per Share Discount For Compensation Expense Recognized Under The2009 Espp WeightedAveragePerShareDiscountForCompensationExpenseRecognizedUnderThe2009ESPP	17.83
CY2018Q4	lad	Weighted Average Per Share Discount For Compensation Expense Recognized Under The2009 Espp WeightedAveragePerShareDiscountForCompensationExpenseRecognizedUnderThe2009ESPP	13.10
CY2017Q4	lad	Weighted Average Per Share Discount For Compensation Expense Recognized Under The2009 Espp WeightedAveragePerShareDiscountForCompensationExpenseRecognizedUnderThe2009ESPP	15.20
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	92000000.0	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	92000000.0	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	69600000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2700000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3500000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3500000	USD
CY2019	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	11300000	USD
CY2018	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	10600000	USD
CY2017	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	7800000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	9800000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	9000000.0	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	9000000.0	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	25200000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	238500000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	263700000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1100000	USD
CY2018Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	2000000.0	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	29500000	USD
CY2018Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	28800000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	30600000	USD
CY2018Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	30800000	USD
CY2019Q4	lad	Lease Liability LeaseLiability	294300000	USD
CY2018Q4	lad	Lease Liability LeaseLiability	30800000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P13Y
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P13Y
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0581
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0508
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	48500000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	1400000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	4600000	USD
CY2019	us-gaap	Lease Cost LeaseCost	45300000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	43300000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	33400000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	37700000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	35100000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	33100000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	28200000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	25700000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	210300000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	370100000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	106400000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	263700000	USD
CY2019Q2	lad	Derivative Financial Instrument Period DerivativeFinancialInstrumentPeriod	P5Y
CY2019Q2	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	300000000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	112000000.0	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	34700000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	20400000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-14200000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	5200000	USD
CY2019Q2	lad	Floor Plan Notes Payable Non Trade FloorPlanNotesPayableNonTrade	1600000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-1000000.0	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	24000000.0	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	11500000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	16900000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	64000000.0	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	41800000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	1700000	USD
CY2019	lad	Franchise Value Impairment FranchiseValueImpairment	400000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	40000000.0	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	30300000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	95100000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	9600000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	4100000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	39900000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	30000000.0	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-10100000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	103900000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	71800000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	101900000	USD
CY2019Q4	us-gaap	Taxes Payable Current And Noncurrent TaxesPayableCurrentAndNoncurrent	10100000	USD
CY2018Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	17100000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	78800000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	70900000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	121500000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	23600000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	16100000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	13300000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	2600000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1500000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1300000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	200000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-100000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-800000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-500000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	500000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	300000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	900000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1100000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	900000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-15800000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-32900000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	100000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-200000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	100000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	103900000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	71800000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	101900000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	48400000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	47200000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	42100000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	40800000	USD
CY2019Q4	lad	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	69700000	USD
CY2018Q4	lad	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	300000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	300000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	600000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1100000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	159900000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	87200000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Inventory Costs DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts	40000000.0	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Inventory Costs DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts	42000000.0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	60700000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	48200000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	113600000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	78000000.0	USD
CY2019Q4	lad	Deferred Tax Liabilities Right Of Use Asset DeferredTaxLiabilitiesRightOfUseAsset	66600000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	10100000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	10200000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	291000000.0	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	178400000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	131100000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	91200000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	600000	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-500000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	2200000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019	us-gaap	Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	232300000	USD
CY2019	us-gaap	Business Combination Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual	3100000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	366600000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	373800000	USD
CY2018	us-gaap	Business Combination Consideration Transferred Liabilities Incurred BusinessCombinationConsiderationTransferredLiabilitiesIncurred	125100000	USD
CY2019	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	393000000.0	USD
CY2018	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	498900000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	2500000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	4300000	USD
CY2019	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	13193400000	USD
CY2018	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	12831900000	USD
CY2019	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	280200000	USD
CY2018	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	275600000	USD
CY2019	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	12.07
CY2018	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	11.31
CY2019	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	11.98
CY2018	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	11.26
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	12672700000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	11821400000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10086500000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	375400000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	337500000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	347100000	USD
CY2019	lad	Floor Plan Interest Expense FloorPlanInterestExpense	72800000	USD
CY2018	lad	Floor Plan Interest Expense FloorPlanInterestExpense	62300000	USD
CY2017	lad	Floor Plan Interest Expense FloorPlanInterestExpense	39300000	USD
CY2019Q4	us-gaap	Assets Assets	6083900000	USD
CY2018Q4	us-gaap	Assets Assets	5384000000.0	USD
CY2019	us-gaap	Description Of New Accounting Pronouncements Not Yet Adopted DescriptionOfNewAccountingPronouncementsNotYetAdopted	Recent Accounting Pronouncements<div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;">In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326) - Measurement of Credit Losses on Financial Instruments.” This pronouncement, along with subsequent ASUs issued to clarify provisions of ASU 2016-13, changes the impairment model for most financial assets and will require the use of an “expected loss” model for instruments measured at amortized cost. Under this model, entities will be required to estimate the lifetime expected credit loss on such instruments and record an allowance to offset the amortized cost basis of the financial asset, resulting in a net presentation of the amount expected </span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;">to be collected on the financial asset. In developing the estimate for lifetime expected credit loss, entities must incorporate historical experience, current conditions, and reasonable and supportable forecasts. This pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2019. We have designed an allowance for loan loss methodology to comply with these new requirements, which will be adopted for our fiscal year beginning January 1, 2020. Based on information as of December 31, 2019, we expect to record a </span><span style="font-family:Times New Roman;font-size:10pt;"><span>$5.0 million</span></span><span style="font-family:Times New Roman;font-size:10pt;"> to </span><span style="font-family:Times New Roman;font-size:10pt;"><span>$8.0 million</span></span><span style="font-family:Times New Roman;font-size:10pt;"> increase in the allowance for loan losses on our opening consolidated balance sheet as of January 1, 2020, with a corresponding net-of-tax adjustment to retained earnings. The final adoption impact may vary depending on the company’s portfolio at the adoption date, as well as macroeconomic conditions and forecasts at that time. We are finalizing testing of the effectiveness of our new allowance for loan loss methodology, as well as designing the relevant controls and governance structure.</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;">In January 2017, the FASB issued ASU 2017-04, “Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment.” ASU 2017-04 simplifies the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test. An entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount, and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value, if applicable. The loss recognized should not exceed the total amount of goodwill allocated to the reporting unit. The same impairment test also applies to any reporting unit with a zero or negative carrying amount. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. ASU 2017-04 is effective for fiscal years, including interim periods within those fiscal years, beginning after December 15, 2019, on a prospective basis. Early adoption is permitted for interim or annual goodwill impairment tests performed after January 1, 2017. We do not expect the adoption of ASU 2017-04 to have a material effect on our financial position, results of operations or cash flows.</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;">In December 2019, the FASB issued ASU 2019-12, “Income Taxes (Topic 740) - Simplifying the Accounting for Income Taxes”. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2020, with early adoption permitted. We are currently in the process of evaluating the effects of this pronouncement on our consolidated financial statements.</span></div>
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	66100000	USD
CY2019Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	259700000	USD
CY2018Q4	us-gaap	Assets Assets	5384000000.0	USD
CY2019Q1	us-gaap	Assets Assets	5643700000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	283600000	USD
CY2019Q1	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	310200000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	121700000	USD
CY2019Q1	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	120400000	USD
CY2019Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	5643700000	USD
CY2019Q1	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	243900000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	122200000	USD
CY2019Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	111900000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	4186800000	USD
CY2019Q1	us-gaap	Liabilities Liabilities	4445600000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1162100000	USD
CY2019Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1163000000.0	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	5384000000.0	USD

Files In Submission

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$LAD
Lithia Motors Inc Stock $lad

2019 Q1 Form 10-K Financial Statement

#000102312820000018 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LAD Lithia Motors Inc Stock $lad

2019 Q1 Form 10-K Financial Statement

#000102312820000018 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LAD
Lithia Motors Inc Stock $lad