Asbury Automotive (ABG) 10-K 2 Mar 20 2019 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Feb. 28, 2020	Jun. 30, 2019
Cover page.
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-31262
Entity Registrant Name	ASBURY AUTOMOTIVE GROUP, INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	01-0609375
Entity Address, Address Line One	2905 Premiere Parkway NW,
Entity Address, Address Line Two	Suite 300
Entity Address, City or Town	Duluth,
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30097
City Area Code	770
Local Phone Number	418-8200
Title of 12(b) Security	Common stock, $0.01 par value per share
Trading Symbol	ABG
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 1,610
Entity Common Stock, Shares Outstanding		19,278,564
Documents Incorporated by Reference	List hereunder the following documents if incorporated by reference and the Part of the Form 10-K into which the document is incorporated: Portions of the registrant's definitive Proxy Statement for the 2020 Annual Meeting of Stockholders, to be filed within 120 days after the end of the registrant's fiscal year, are incorporated by reference into Part III, Items 10 through 14 of this Annual Report on Form 10-K.
Entity Central Index Key	0001144980
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 3.5	$ 8.3
Contracts-in-transit, net	194.7	198.3
Accounts receivable, net	136.2	130.3
Inventories, net	985	1,067.6
Assets held for sale	154.2	26.3
Other current assets	129	122.2
Total current assets	1,602.6	1,553
PROPERTY AND EQUIPMENT, net	909.7	886.1
OPERATING LEASE RIGHT-OF-USE ASSETS	65.6	0
GOODWILL	201.7	181.2
INTANGIBLE FRANCHISE RIGHTS	121.7	65.8
OTHER LONG-TERM ASSETS	10	9.3
Total assets	2,911.3	2,695.4
CURRENT LIABILITIES:
Floor plan notes payable—trade, net	130.3	114
Floor plan notes payable—non-trade, net	657.7	852.1
Current maturities of long-term debt	32.4	38.8
Current maturities of operating leases	17	0
Accounts payable and accrued liabilities	308.7	298.4
Liabilities associated with assets held for sale	100.9	0
Total current liabilities	1,247	1,303.3
LONG-TERM DEBT	907	866.5
LONG-TERM LEASE LIABILITY	52.6	0
DEFERRED INCOME TAXES	26	21.7
OTHER LONG-TERM LIABILITIES	32.4	30.7
COMMITMENTS AND CONTINGENCIES (Note 20)
SHAREHOLDERS' EQUITY:
Preferred stock, $.01 par value, 10,000,000 shares authorized; none issued or outstanding	0	0
Common stock, $.01 par value, 90,000,000 shares authorized; 41,072,080 and 41,065,069 shares issued, including shares held in treasury, respectively	0.4	0.4
Additional paid-in capital	582.9	572.9
Retained earnings	1,094.5	922.7
Treasury stock, at cost; 21,791,707 and 21,719,339 shares, respectively	(1,028.6)	(1,023.4)
Accumulated other comprehensive loss	(2.9)	0.6
Total shareholders' equity	646.3	473.2
Total liabilities and shareholders' equity	$ 2,911.3	$ 2,695.4

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	90,000,000	90,000,000
Common stock, shares issued (in shares)	41,072,080	41,065,069
Treasury stock, shares (in shares)	21,791,707	21,719,339

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
REVENUE:
New vehicle	$ 3,863.3	$ 3,788.7	$ 3,561.1
Used vehicle	2,131.6	1,972.4	1,834.1
Finance and insurance, net	316	292.3	275.2
TOTAL REVENUE	7,210.3	6,874.4	6,456.5
COST OF SALES:
New vehicle	3,703.8	3,623.5	3,392.1
Used vehicle	1,997.5	1,842.7	1,712.2
Cost of Goods and Services Sold	340.1	305.2	296.3
Parts and service	899.4	821	786.1
TOTAL COST OF SALES	6,041.4	5,771.4	5,400.6
GROSS PROFIT	1,168.9	1,103	1,055.9
OPERATING EXPENSES:
Selling, general, and administrative	799.8	755.8	729.7
Depreciation and amortization	36.2	33.7	32.1
Franchise rights impairment	7.1	3.7	5.1
Other operating expenses (income), net	0.8	(1.1)	1.3
INCOME FROM OPERATIONS	325	310.9	287.7
OTHER EXPENSES (INCOME):
Floor plan interest expense	37.9	32.5	22.7
Other interest expense, net	54.9	53.1	53.9
Swap interest expense	0	0.5	2
Gain on divestitures	(11.7)	0	0
Total other expenses, net	81.1	86.1	78.6
INCOME BEFORE INCOME TAXES	243.9	224.8	209.1
Income tax expense	59.5	56.8	70
NET INCOME	$ 184.4	$ 168	$ 139.1
Basic—
Net income (in dollars per share)	$ 9.65	$ 8.36	$ 6.69
Diluted—
Net income (in dollars per share)	$ 9.55	$ 8.28	$ 6.62
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	19.1	20.1	20.8
Restricted stock (in shares)	0.1	0.1	0.1
Performance share units (in shares)	0.1	0.1	0.1
Diluted (in shares)	19.3	20.3	21

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 184.4	$ 168	$ 139.1
Other comprehensive income (loss):
Change in fair value of cash flow swaps	(4.4)	2.3	1.9
Income tax benefit (expense) associated with cash flow swaps	1.1	(0.8)	(0.7)
Comprehensive income	$ 181.1	$ 169.5	$ 140.3

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Comprehensive Income (Loss):
Cumulative effect of change in accounting principle | ASU 2016-09	$ 0.2		$ 0.5	$ (0.3)
Balance (in shares) at Dec. 31, 2016		40,750,765			19,497,596
Balance at Dec. 31, 2016	279.7	$ 0.4	549.4	611.5	$ (879.5)	$ (2.1)
Comprehensive Income (Loss):
Net income	139.1			139.1
Change in fair value of cash flow swaps, net of reclassification adjustment	1.2					1.2
Comprehensive income	140.3			139.1		1.2
Share-based compensation	13.6		13.6
Issuance of common stock in connection with share-based payment arrangements (in shares)		219,222
Issuance of common stock in connection with share-based payment arrangements	0		0
Repurchase of common stock associated with net share settlements of employee share-based awards (in shares)					74,670
Repurchase of common stock associated with net share settlements of employee share-based awards	(4.8)				$ (4.8)
Purchase of treasury shares (in shares)					584,696
Purchase of treasury shares	(34.8)				$ (34.8)
Balance (in shares) at Dec. 31, 2017		40,969,987			20,156,962
Balance at Dec. 31, 2017	394.2	$ 0.4	563.5	750.3	$ (919.1)	(0.9)
Comprehensive Income (Loss):
Cumulative effect of change in accounting principle | ASU 2014-09	9.2			9.2
Net income	168			168
Change in fair value of cash flow swaps, net of reclassification adjustment	1.5					1.5
Comprehensive income	169.5			168		1.5
Share-based compensation	10.5		10.5
Issuance of common stock in connection with share-based payment arrangements (in shares)		185,049
Issuance of common stock in connection with share-based payment arrangements	0
Repurchase of common stock associated with net share settlements of employee share-based awards (in shares)					71,434
Repurchase of common stock associated with net share settlements of employee share-based awards	(4.8)				$ (4.8)
Purchase of treasury shares (in shares)					1,580,910
Purchase of treasury shares	(105.4)				$ (105.4)
Retirement of previously repurchased common stock (in shares)		(89,967)			(89,967)
Retirement of previously repurchased common stock	0		(1.1)	(4.8)	$ (5.9)
Balance (in shares) at Dec. 31, 2018		41,065,069			21,719,339
Balance at Dec. 31, 2018	473.2	$ 0.4	572.9	922.7	$ (1,023.4)	0.6
Comprehensive Income (Loss):
Cumulative effect of change in accounting principle | ASU 2014-09	0			0.2		(0.2)
Net income	184.4			184.4
Change in fair value of cash flow swaps, net of reclassification adjustment	(3.3)					(3.3)
Comprehensive income	181.1			184.4		(3.3)
Share-based compensation	12.5		12.5
Issuance of common stock in connection with share-based payment arrangements (in shares)		209,390
Issuance of common stock in connection with share-based payment arrangements	0
Repurchase of common stock associated with net share settlements of employee share-based awards (in shares)					72,368
Repurchase of common stock associated with net share settlements of employee share-based awards	(5.2)				$ (5.2)
Purchase of treasury shares (in shares)					202,379
Purchase of treasury shares	(15.3)				$ (15.3)
Retirement of previously repurchased common stock (in shares)		(202,379)			(202,379)
Retirement of previously repurchased common stock	0		(2.5)	(12.8)	$ (15.3)
Balance (in shares) at Dec. 31, 2019		41,072,080			21,791,707
Balance at Dec. 31, 2019	$ 646.3	$ 0.4	$ 582.9	$ 1,094.5	$ (1,028.6)	$ (2.9)

CONSOLIDATED STATEMENTS OF SH_2

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]
Change in fair value of cash flow swaps, tax	$ (1.1)	$ 0.8	$ (0.7)

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CASH FLOW FROM OPERATING ACTIVITIES:
Net income	$ 184.4	$ 168	$ 139.1
Adjustments to reconcile net income to net cash provided by operating activities—
Depreciation and amortization	36.2	33.7	32.1
Share-based compensation	12.5	10.5	13.6
Deferred income taxes	5.4	5.3	2.8
Franchise rights impairment	7.1	3.7	5.1
Loaner vehicle amortization	23.6	22.5	22.4
Gain on divestitures	(11.7)	0	0
Change in right-of-use asset	19.4
Other adjustments, net	4.8	3.1	4.3
Changes in operating assets and liabilities, net of acquisitions and divestitures—
Contracts-in-transit	3.6	(5)	(10.7)
Accounts receivable	(6)	(1.5)	10.2
Inventories	212.1	(24.4)	251.5
Other current assets	(173.7)	(200.8)	(197.2)
Floor plan notes payable—trade, net	38.2	9.8	(4.1)
Accounts payable and accrued liabilities	10.7	(16.2)	(2.6)
Operating lease liabilities	(19.7)
Other long-term assets and liabilities, net	2.9	1.4	(0.2)
Net cash provided by operating activities	349.8	10.1	266.3
CASH FLOW FROM INVESTING ACTIVITIES:
Capital expenditures—excluding real estate	(57.6)	(40.3)	(42.3)
Capital expenditures—real estate	(9.2)	(17.6)	(5.8)
Purchases of previously leased real estate	(4.9)	(4.4)	(5.4)
Acquisitions	(210)	(91.3)	(80.1)
Divestitures	39.1	0	0
Proceeds from the sale of assets	15	4	5.8
Net cash used in investing activities	(227.6)	(149.6)	(127.8)
CASH FLOW FROM FINANCING ACTIVITIES:
Floor plan borrowings—non-trade	4,318.6	4,591.9	3,850.3
Floor plan borrowings—acquisitions	55.3	22.7	25.1
Floor plan repayments—non-trade	(4,513.3)	(4,390.4)	(3,921)
Floor plan repayments—divestitures	(14.1)	0	0
Proceeds from borrowings	97.7	50.7	0
Repayments of borrowings	(48.4)	(19.9)	(52)
Payment of debt issuance costs	(2.3)	(1.7)	0
Repurchases of common stock, including amounts associated with net share settlements of employee share-based awards	(20.5)	(110.2)	(39.6)
Net cash (used in) provided by financing activities	(127)	143.1	(137.2)
Net (decrease) increase in cash and cash equivalents	(4.8)	3.6	1.3
CASH AND CASH EQUIVALENTS, beginning of period	8.3	4.7	3.4
CASH AND CASH EQUIVALENTS, end of period	$ 3.5	$ 8.3	$ 4.7

DESCRIPTION OF BUSINESS AND SUM

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	We are one of the largest automotive retailers in the United States. As of December 31, 2019 , we owned and operated 107 new vehicle franchises ( 88 dealership locations), representing 31 brands of automobiles, and 25 collision centers, in 17 metropolitan markets, within ten states. Our stores offer an extensive range of automotive products and services, including new and used vehicles, parts and services, which includes repair and maintenance services, replacement parts and collision repair services, and finance and insurance products. For the year ended December 31, 2019 , our new vehicle revenue brand mix consisted of 45% imports, 34% luxury, and 21% domestic brands. Our operating results are generally subject to seasonal variations. Demand for new vehicles is generally highest during the second, third, and fourth quarters of each year and, accordingly, we expect our revenues to generally be higher during these periods. In addition, we typically experience higher sales of luxury vehicles in the fourth quarter, which have higher average selling prices and gross profit per vehicle retailed. Revenues and operating results may be impacted significantly from quarter to quarter by changing economic conditions, vehicle manufacturer incentive programs, or adverse weather events. Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"), and reflect the consolidated accounts of Asbury Automotive Group, Inc. and our wholly owned subsidiaries. All intercompany transactions have been eliminated in consolidation. If necessary, reclassifications of amounts previously reported have been made to the accompanying Consolidated Financial Statements in order to conform to current presentation. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities as of the date of the financial statements, and the reported amounts of revenues and expenses during the periods presented. Actual results could differ materially from these estimates. Estimates and assumptions are reviewed quarterly, and the effects of any revisions are reflected in the consolidated financial statements in the period they are determined to be necessary. Significant estimates made in the accompanying Consolidated Financial Statements include, but are not limited to, those relating to inventory valuation reserves, reserves for chargebacks against revenue recognized from the sale of finance and insurance products, reserves for insurance programs, certain assumptions related to intangible and long-lived assets, and reserves for certain legal or similar proceedings relating to our business operations. Cash and Cash Equivalents Cash and cash equivalents include investments in money market accounts and short-term certificates of deposit, which have maturity dates of less than 90 days when purchased. Contracts-In-Transit Contracts-in-transit represent receivables from third-party finance companies for the portion of new and used vehicle purchase price financed by customers through sources arranged by us. Inventories Inventories are stated at the lower of cost and net realizable value. We use the specific identification method to value vehicle inventories and the "first-in, first-out" method ("FIFO") to account for our parts inventories. Our new vehicle sales histories have indicated that the vast majority of the new vehicles we sell are sold for, or in excess of, our cost to purchase those vehicles. Therefore, we generally do not maintain a reserve for new vehicle inventory. We maintain a reserve for used vehicle inventory where cost basis exceeds net realizable value. In assessing lower of cost and net realizable value for used vehicles, we consider (i) the aging of our used vehicles, (ii) historical sales experience of used vehicles, and (iii) current market conditions and trends in used vehicle sales. We also review and consider the following metrics related to used vehicle sales (both on a recent and longer-term historical basis): (i) days of supply in our used vehicle inventory, (ii) used vehicle units sold at less than original cost as a percentage of total used vehicles sold, and (iii) average vehicle selling price of used vehicle units sold at less than original cost. We then determine the appropriate level of reserve required to reduce our used vehicle inventory to the lower of cost and net realizable value, and record the resulting adjustment in the period in which we determine a loss has occurred. The level of reserve determined to be appropriate for each reporting period is considered to be a permanent inventory write-down, and therefore is only released upon the sale of the related inventory. We receive assistance from certain automobile manufacturers in the form of advertising and floor plan interest credits. Manufacturer advertising credits that are reimbursements of costs associated with specific advertising programs are recognized as a reduction of advertising expense in the period they are earned. All other manufacturer advertising and floor plan interest credits are accounted for as purchase discounts, and are recorded as a reduction of inventory and recognized as a reduction to New vehicle cost of sales in the accompanying Consolidated Statements of Income in the period the related vehicle is sold. Property and Equipment Property and equipment are recorded at cost and depreciated using the straight-line method over their estimated useful lives. Depreciation is included in Depreciation and amortization on the accompanying Consolidated Statements of Income. Leasehold improvements are capitalized and amortized over the lesser of the remaining lease term or the useful life of the related asset. The ranges of estimated useful lives are as follows (in years): Buildings and improvements 10-40 Machinery and equipment 5-10 Furniture and fixtures 3-10 Company vehicles 3-5 Expenditures for major additions or improvements, which extend the useful lives of assets, are capitalized. Minor replacements, maintenance and repairs, which do not improve or extend the lives of such assets, are expensed as incurred. We capitalize interest on borrowings during the active construction period of capital projects. Capitalized interest is added to the cost of the assets and is depreciated over the estimated useful lives of the assets. We review property and equipment for impairment whenever events or changes in circumstances indicate the carrying value may not be recoverable. When we test our long-lived assets for impairment, we first compare the carrying amount of the underlying assets to their net recoverable value by reviewing the undiscounted cash flows expected from the use and eventual disposition of the underlying assets. If the carrying amount of the underlying assets is less than their net recoverable value, then we calculate an impairment equal to the excess of the carrying amount over the fair market value, and the impairment loss would be charged to operations in the period identified. We did not record an impairment of our property and equipment in 2019 , 2018 , and 2017 . Acquisitions Acquisitions are accounted for under the acquisition method of accounting and the assets acquired and liabilities assumed are recorded at their fair value at the acquisition date. The results of operations of acquired dealerships are included in the accompanying Consolidated Statements of Income, commencing on the date of acquisition. Goodwill and Other Intangible Assets Goodwill represents the excess cost of an acquired business over the estimated fair market value of its identifiable net assets. We have determined that, based on how we integrate acquisitions into our business, how the components of our business share resources and interact with one another, and how we review the results of our operations, that we have several geographic market-based operating segments. We have determined that the dealerships in each of our operating segments are components that are aggregated into several geographic market-based reporting units for the purpose of testing goodwill for impairment, as they (i) have similar economic characteristics, (ii) offer similar products and services (all of our dealerships offer new and used vehicles, service, parts and third-party finance and insurance products), (iii) have similar customers, (iv) have similar distribution and marketing practices (all of our dealerships distribute products and services through dealership facilities that market to customers in similar ways), and (v) operate under similar regulatory environments. Our only significant identifiable intangible assets, other than goodwill, are our rights under franchise agreements with manufacturers, which are recorded at an individual franchise level. The fair value of our manufacturer franchise rights are determined at the acquisition date, by discounting the projected cash flows specific to each franchise. We have determined that manufacturer franchise rights have an indefinite life, as there are no economic, contractual or other factors that limit their useful lives, and they are expected to generate cash flows indefinitely due to the historically long lives of the manufacturers' brand names. Furthermore, to the extent that any agreements evidencing our manufacturer franchise rights would expire, we expect that we would be able to renew those agreements in the ordinary course of business. Goodwill and manufacturer franchise rights are deemed to have indefinite lives and therefore are not subject to amortization. We review goodwill and manufacturer franchise rights for impairment annually as of October 1 st , or more often if events or circumstances indicate that impairment may have occurred. We are subject to financial statement risk to the extent that goodwill becomes impaired due to decreases in the fair value of our automotive retail business or manufacturer franchise rights become impaired due to decreases in the fair value of our individual franchises. Debt Issuance Costs Debt issuance costs are presented as a contra-liability within Current maturities of long-term debt or Long-term debt on our Consolidated Balance Sheets, except for debt issuance costs associated with our line-of-credit arrangements, which are presented as an asset within Other current assets or Other long-term assets on our Consolidated Balance Sheets. Debt issuance costs are amortized to Floor plan interest expense and Other interest expense, net in the accompanying Consolidated Statements of Income through maturity using the effective interest method or the straight-line method for our line-of-credit arrangements. Derivative Instruments and Hedging Activities From time to time, we utilize derivative financial instruments to manage our interest rate risk. The types of risks hedged are those relating to the variability of cash flows caused by fluctuations in interest rates. We document our risk management strategy and assess hedge effectiveness at each interest rate swaps inception and during the term of each hedge. Derivatives are reported at fair value on the accompanying Consolidated Balance Sheets. The unrealized gain or losses on our hedges is reported as a component of Accumulated Other Comprehensive Loss on the accompanying Consolidated Balance Sheets, and reclassified to Other interest expense, net in the accompanying Consolidated Statements of Income in the period during which the hedged transaction affects earnings. Insurance We are self-insured for employee medical claims and maintain stop-loss insurance for large-dollar individual claims. We have high deductible insurance programs for workers compensation, property and general liability claims. We maintain and review our claim and loss history to assist in assessing our expected future liability for these claims. We also use professional service providers, such as account administrators and actuaries, to help us accumulate and assess this information. Provisions for retained losses and deductibles are made by charges to expense based upon periodic evaluations of the estimated ultimate liabilities on reported and unreported claims. Revenue Recognition Please refer to Note 2 "Revenue Recognition" within the accompanying Consolidated Financial Statements. Internal Profit Revenues and expenses associated with internal work performed by our parts and service departments on new and used vehicle inventory are eliminated in consolidation. The gross profit earned by our parts and service departments for internal work performed is included as a reduction of Parts and service cost of sales on the accompanying Consolidated Statements of Income upon the sale of the vehicle. The costs incurred by our new and used vehicle departments for work performed by our parts and service departments is included in either New vehicle cost of sales or Used vehicle cost of sales on the accompanying Consolidated Statements of Income, depending on the classification of the vehicle serviced. We eliminate the internal profit on vehicles that remain in inventory. Share-Based Compensation We record share-based compensation expense under the fair value method on a straight-line basis over the vesting period, unless the awards are subject to performance conditions, in which case we recognize the expense over the requisite service period of each separate vesting tranche. In addition, we account for the forfeiture of share-based awards as they occur. Share Repurchases Share repurchases may be made from time-to-time in open market transactions or through privately negotiated transactions under the authorization approved by the Board of Directors. Periodically, the Company may retire repurchased shares of common stock previously held by the Company as treasury stock. In accordance with our accounting policy, we allocate any excess share repurchase price over par value between additional paid-in capital, which is limited to amounts initially recorded for the same issue, and retained earnings. During the year ended December 31, 2019 , the Company retired 202,379 shares of its common stock repurchased pursuant to the Repurchase Program ("Retired Shares") and previously held by the Company as Treasury Shares in the amount of $15.3 million . Earnings per Common Share Basic earnings per common share is computed by dividing net income by the weighted-average common shares outstanding during the period. Diluted earnings per common share is computed by dividing net income by the weighted-average common shares and common share equivalents outstanding during the period. For all periods presented, there were no adjustments to the numerator necessary to compute diluted earnings per share. Advertising We expense costs of advertising as incurred and production costs when the advertising initially takes place, net of certain advertising credits and other discounts received from certain automobile manufacturers. Advertising expense from continuing operations totaled $34.4 million , $30.6 million and $30.3 million for the years ended December 31, 2019 , 2018 and 2017 , which was net of earned advertising credits of $21.1 million , $21.0 million , and $18.0 million , respectively, and is included in Selling, general, and administrative expense in the accompanying Consolidated Statements of Income. Income Taxes We use the liability method to account for income taxes. Under this method, deferred tax assets and liabilities are recognized for the expected future tax consequences of differences between the carrying amounts of assets and liabilities and their respective tax basis using currently enacted tax rates. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period when the change is enacted. Deferred tax assets are reduced by a valuation allowance when it is more likely than not that some portion or all the deferred tax assets will not be realized. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Act. The Tax Act makes broad and complex changes to the U.S. tax code, including, but not limited to, a reduction in the U.S. federal corporate income tax rate from 35% to 21%. In 2017, we remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21%. The provisional amount recorded related to the remeasurement of our deferred tax balance resulted in a $7.9 million reduction to our net deferred tax liability as of December 31, 2017. The staff of the U.S. Securities and Exchange Commission issued Staff Accounting Bulletin No. 118 ("SAB 118") on December 22, 2017, which provided guidance on accounting for the income tax effects of the Tax Act. SAB 118 provides a measurement period that should not extend beyond one year from December 22, 2017, the Tax Act enactment date, for companies to complete the accounting under ASC 740, Income Taxes ("ASC 740"). In accordance with SAB 118, a company must reflect the income tax effects of those aspects of the Tax Act for which the accounting under ASC 740 is complete. During the third quarter of 2018, the IRS released Notice 2018-68, which clarified a number of changes made to Section 162(m) of the Code by the Tax Act. As a result of this new guidance, we recorded $0.6 million of additional income tax expense related to an adjustment to the deferred tax asset for certain components of share-based compensation. After considering the additional guidance issued by the U.S. Treasury Department, state tax authorities and other standard-setting bodies we have completed our accounting for the Tax Act. Assets Held for Sale and Liabilities Associated with Assets Held for Sale Certain amounts have been classified as Assets held for sale as of December 31, 2019 and 2018 in the accompanying Consolidated Balance Sheets. Assets and liabilities classified as held for sale include assets and liabilities associated with pending dealership disposals, real estate we are actively marketing to sell, and any related mortgage notes payable or other liabilities, if applicable. Classification as held for sale begins on the date that we have met all of the criteria for classification as held for sale. At the time of classifying assets as held for sale, we compare the carrying value of these assets to estimates of fair value to assess for impairment. We compare the carrying value to estimates of fair value utilizing the assistance of third-party broker opinions of value and third-party desktop appraisals to assist in our fair value estimates related to real estate properties. Statements of Cash Flows Borrowings and repayments of floor plan notes payable to a lender unaffiliated with the manufacturer from which we purchase a particular new vehicle ("Non-Trade") and all floor plan notes payable relating to pre-owned vehicles (together referred to as "Floor Plan Notes Payable—Non-Trade"), are classified as financing activities on the accompanying Consolidated Statements of Cash Flows, with borrowings reflected separately from repayments. The net change in floor plan notes payable to a lender affiliated with the manufacturer from which we purchase a particular new vehicle (collectively referred to as "Floor Plan Notes Payable—Trade") is classified as an operating activity on the accompanying Consolidated Statements of Cash Flows. Borrowings of floor plan notes payable associated with inventory acquired in connection with all acquisitions and repayments made in connection with all divestitures are classified as a financing activity in the accompanying Consolidated Statement of Cash Flows. Cash flows related to floor plan notes payable included in operating activities differ from cash flows related to floor plan notes payable included in financing activities only to the extent that the former are payable to a lender affiliated with the manufacturer from which we purchased the related inventory, while the latter are payable to a lender not affiliated with the manufacturer from which we purchased the related inventory. Loaner vehicles account for a significant portion of Other current assets. We acquire loaner vehicles either with available cash or through borrowings from either our manufacturer affiliated lenders or through our senior secured credit agreement with Bank of America, as administrative agent, and the other agents and lenders party thereto (as amended, the "2019 Senior Credit Facility"). Loaner vehicles are initially used by our service department for only a short period of time (typically 6 to 12 months) before we seek to sell them. Therefore, we classify the acquisition of loaner vehicles in Other current assets and the borrowings and repayments of loaner vehicle notes payable in Accounts payable and accrued liabilities in the accompanying Consolidated Statements of Cash Flows. Loaner vehicles are depreciated over the service period to their estimated value. At the end of the loaner service period, loaner vehicles are transferred from Other current assets to used vehicle inventory. These transfers are reflected as non-cash transfers between Other current Assets and Inventory in the accompanying Consolidated Statements of Cash Flows. Business and Credit Concentration Risk Financial instruments, which potentially subject us to a concentration of credit risk, consist principally of cash deposits. We maintain cash balances at financial institutions with strong credit ratings. Generally, amounts maintained with these financial institutions are in excess of FDIC insurance limits. We have substantial debt service obligations. As of December 31, 2019 , we had total debt of $943.3 million , which excluded both $28.1 million mortgage notes payable classified as Liabilities associated with assets held for sale and floor plan notes payable, the debt premium on the 6.0% Senior Subordinated Notes due 2024 (" 6.0% Notes"), and debt issuance costs. In addition, we and our subsidiaries have the ability to obtain additional debt from time to time to finance acquisitions, real property purchases, capital expenditures, share repurchases or for other purposes, although such borrowings are subject to the restrictions contained in the third amended and restated senior secured credit agreement with Bank of America, N.A. ("Bank of America"), as administrative agent, and the other lenders party thereto (the "2019 Senior Credit Facility"), the indenture governing our 6.0% Senior Subordinated Notes due 2024 (the "Indenture"), and our other debt instruments. We will have substantial debt service obligations, consisting of required cash payments of principal and interest, for the foreseeable future. We are subject to operating and financial restrictions and covenants in certain of our leases and in our debt instruments, including the 2019 Senior Credit Facility, the Indentures, and the credit agreements covering our mortgage obligations. These agreements contain restrictions on, among other things, our ability to incur additional indebtedness, to create liens or other encumbrances, and to make certain payments (including dividends and repurchases of our shares and investments). These agreements may also require us to maintain compliance with certain financial and other ratios. Our failure to comply with any of these covenants in the future would constitute a default under the relevant agreement, which would, depending on the relevant agreement, (i) entitle the creditors under such agreement to terminate our ability to borrow under the relevant agreement and accelerate our obligations to repay outstanding borrowings; (ii) require us to apply our available cash to repay these borrowings; (iii) entitle the creditors under such agreement to foreclose on the property securing the relevant indebtedness; and/or (iv) prevent us from making debt service payments on certain of our other indebtedness, any of which would have a material adverse effect on our business, financial condition or results of operations. In many cases, a default under one of our debt or mortgage, agreements could trigger cross-default provisions in one or more of our other debt or mortgages. A number of our dealerships are located on properties that we lease. Each of the leases governing such properties has certain covenants with which we must comply. If we fail to comply with the covenants under our leases, the respective landlords could terminate the leases and seek damages from us. Concentrations of credit risk with respect to contracts-in-transit and accounts receivable are limited primarily to automotive manufacturers and financial institutions. Credit risk arising from receivables from commercial customers is minimal due to the large number of customers comprising our customer base. A significant portion of our new vehicle sales are derived from a limited number of automotive manufacturers. For the year ended December 31, 2019 , manufacturers representing 5% or more of our revenues from new vehicle sales were as follows: Manufacturer (Vehicle Brands): % of Total New Vehicle Revenues American Honda Motor Co., Inc. (Honda and Acura) 22 % Toyota Motor Sales, U.S.A., Inc. (Toyota and Lexus) 20 % Nissan North America, Inc. (Nissan and Infiniti) 11 % Ford Motor Company (Ford and Lincoln) 10 % Mercedes-Benz USA, LLC ( Mercedes-Benz, smart and Sprinter ) 7 % BMW of North America, LLC (BMW and Mini) 6 % No other manufacturers individually accounted for more than 5% of our total new vehicle revenue for the year ended December 31, 2019 . Segment Reporting Our operations are organized by management into geographic market-based dealership groups. Our Chief Operating Decision Maker is our Chief Executive Officer who manages the business, regularly reviews financial information and allocates resources at the geographic market level. The geographic operating segments have been aggregated into one reportable segment as their operations (i) have similar economic characteristics (our markets all have similar long-term average gross margins), (ii) offer similar products and services (all of our markets offer new and used vehicles, parts and service, and third-party finance and insurance products), (iii) have similar customers, (iv) have similar distribution and marketing practices (all of our markets distribute products and services through dealership facilities that market to customers in similar ways), and (v) operate under similar regulatory environments. Recent Accounting Pronouncements Effective January 1, 2019, the Company adopted the new lease accounting guidance in Accounting Standards Update (ASU) No. 2016-02, Leases (Topic 842) (“ASC 842”). For additional information, please refer to Note 18 "Leases" within the accompanying Notes to Consolidated Financial Statements for additional information. Effective January 1, 2019, the Company adopted ASU No. 2018-02, "Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("ASU 2018-02")." ASU 2018-02 allows entities to elect to reclassify the income tax effects resulting from the Tax Cuts and Jobs Act on items within accumulated other comprehensive income to retained earnings. The Company elected to reclassify $0.2 million related to the change in deferred taxes associated with our cash flow hedges from accumulated other comprehensive income to retained earnings. This reclassification was recognized as a cumulative effect adjustment in the Consolidated Statements of Shareholders' Equity. On January 1, 2019, the Company adopted ASU No. 2017-12, "Derivatives and Hedging" (Topic 815): Targeted Improvements to Accounting for Hedging Activities ("ASU 2017-12"). This update is intended to simplify hedge accounting by better aligning how an entity's risk management activities and hedging relationships are presented in its financial statements and simplifies the application of hedge accounting guidance in certain situations. This update expands and refines hedge accounting for both non-financial and financial risk components and aligns the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. For cash flow hedges existing at the adoption date, this update required adoption on a modified retrospective basis with a cumulative-effect adjustment to retained earnings as of the effective date and the amendments to presentation guidance and disclosure requirements are required to be adopted prospectively. The adoption of this update did not have a material impact on our Consolidated Financial Statements. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments- Credit Losses (Topic 326) Measurement of Credit Losses on Financial Instruments ("ASU 2016-13"), which requires an entity to assess impairment of its financial instruments based on its estimate of expected credit losses versus the current incurred loss model. The provisions of ASU 2016-13 are effective for fiscal years beginning after December 15, 2019. Entities are required to apply these changes through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. We are in the process of finalizing our evaluation of the impact from the adoption of the provisions this ASU will have on our Consolidated Financial Statements; however, do not expect the impact from the adoption to be material.

REVENUE RECOGNITION

REVENUE RECOGNITION	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
REVENUE RECOGNITION	REVENUE RECOGNITION The Company satisfies performance obligations either over time or at a point in time as discussed in further detail below. Revenue is recognized at the time the related performance obligation is satisfied by transferring a promised good or performing a service to a customer. Sales and other taxes we collect concurrent with revenue-producing activities are excluded from revenue. Disaggregation of Revenue Revenue from contracts with customers consists of the following: For the year ended December 31, 2019 2018 Revenue: New vehicle $ 3,863.3 $ 3,788.7 Used vehicle retail 1,941.3 1,783.3 Used vehicle wholesale 190.3 189.1 New and used vehicle 5,994.9 5,761.1 Sale of vehicle parts and accessories 148.8 139.2 Vehicle repair and maintenance services 750.6 681.8 Parts and services 899.4 821.0 Finance and insurance, net 316.0 292.3 Total revenue $ 7,210.3 $ 6,874.4 New vehicle and used vehicle retail Revenue from the sale of new and used vehicles (which excludes sales and other taxes) is recognized when the terms of the customer contract are satisfied which generally occurs with the signing of the sales contract and transfer of control of the vehicle to the customer. Costs associated with incidental items that are immaterial in the context of the contract are accrued at the time of sale. Used vehicle wholesale Proceeds from the sale of these vehicles are recognized in used vehicle revenue upon transfer of control to end-users at auction. Sale of vehicle parts and accessories The Company recognizes revenue upon transfer of control to the customer which occurs at a point in time. When the Company performs shipping and handling activities after the transfer of control to the customer (e.g., when control transfers prior to delivery), they are considered as fulfillment activities, and accordingly, the costs are accrued for when the related revenue is recognized. Vehicle repair and maintenance services The Company provides vehicle repair and maintenance services to its customers pursuant to the terms and conditions included within the customer contract ("repair order"). Satisfaction of this performance obligation creates an asset with no alternative use for which an enforceable right to payment for performance to date exists within our contractual agreements. As such, the Company recognizes revenue over time as the Company satisfies its performance obligation. Additionally, the Company has determined that parts and labor are not individually distinct in the context of a repair order and therefore treated as a single performance obligation. Finance and Insurance, net We receive commissions from third-party lending and insurance institutions for arranging customer financing and from the sale of vehicle service contracts, guaranteed asset protection (known as "GAP") debt cancellation, and other insurance, to end-users. Finance and insurance commission revenue is recognized at the point of sale since our performance obligation is to arrange financing or facilitating the sale of a third party's products or services to our customers. The Company's commission arrangements with third-party lenders and insurance administrators consists of fixed ("upfront") and variable consideration. Variable consideration includes commission chargebacks ("chargebacks") in the event a contract is prepaid, defaulted upon, or terminated by the end-user. The Company reserves for future chargebacks based on historical chargeback experience and the termination provisions of the applicable contract and these reserves are established in the same period that the related revenue is recognized. We also participate in future profits pursuant to retrospective commission arrangements, which meet the definition of variable consideration, for certain insurance products associated with a third-party portfolio. The Company estimates the amount of variable consideration to be included in the transaction price based on historical payment trends and further constrains the variable consideration such that it is probable that a significant reversal of previously recognized revenue will not occur. In making these assessments the Company considers the likelihood and magnitude of a potential reversal of revenue and updates its assessment when uncertainties associated with the constraint are removed. Contract Assets Changes in contract assets during the period are reflected in the table below. Contract assets related to vehicle repair and maintenance services are transferred to receivables when a repair order is completed and invoiced to the customer. Vehicle Repair and Maintenance Services Finance and Insurance, net Total (In millions) Contract Assets (Current), January 1, 2019 $ 4.1 $ 10.6 $ 14.7 Transferred to receivables from contract assets recognized at the beginning of the period (4.1 ) (3.3 ) (7.4 ) Increases related to revenue recognized, inclusive of adjustments to constraint, during the period 4.4 3.3 7.7 Contract Assets (Current), March 31, 2019 4.4 10.6 15.0 Transferred to receivables from contract assets recognized at the beginning of the period (4.4 ) (3.2 ) (7.6 ) Increases related to revenue recognized, inclusive of adjustments to constraint, during the period 4.8 4.6 9.4 Contract Assets (Current), June 30, 2019 4.8 12.0 16.8 Transferred to receivables from contract assets recognized at the beginning of the period (4.8 ) (2.6 ) (7.4 ) Increases related to revenue recognized, inclusive of adjustments to constraint, during the period 4.9 2.1 7.0 Contract Assets (Current), September 30, 2019 4.9 11.5 16.4 Transferred to receivables from contract assets recognized at the beginning of the period $ (4.9 ) $ (3.9 ) $ (8.8 ) Increases related to revenue recognized, inclusive of adjustments to constraint, during the period $ 4.8 $ 4.7 $ 9.5 Contract Assets (Current), December 31, 2019 $ 4.8 $ 12.3 $ 17.1

ACQUISITIONS AND DIVESTITURES

ACQUISITIONS AND DIVESTITURES	12 Months Ended
	Dec. 31, 2019
Business Combinations and Divestitures [Abstract]
ACQUISITIONS AND DIVESTITURES	ACQUISITIONS AND DIVESTITURES Results of acquired dealerships are included in our accompanying Consolidated Statements of Income commencing on the date of acquisition. Our acquisitions are accounted for such that the assets acquired and liabilities assumed are recognized at their acquisition date fair values, with any excess of the consideration transferred over the estimated fair values of the identifiable net assets acquired recorded as goodwill. Goodwill is an asset representing operational synergies and future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. The fair value of our manufacturer franchise rights are determined as of the acquisition date, by discounting the projected cash flows specific to each franchise. Included in this analysis are market participant assumptions related to the cash flows directly attributable to the franchise rights, including year-over-year and terminal growth rates, working capital requirements, weighted average cost of capital, future gross margins, and future selling, general, and administrative expenses. During the year ended December 31, 2019, we acquired the assets of nine franchises ( five dealership locations) and one collision center in the Indianapolis, Indiana market and one franchise ( one dealership location) in the Denver, Colorado market for a combined purchase price of $210.4 million . We funded these acquisitions with an aggregate of $153.9 million of cash and $55.3 million of floor plan borrowings for the purchase of the related new vehicle inventory. In the aggregate, these acquisitions included purchase price holdbacks of $1.2 million for potential indemnity claims made by us with respect to the acquired franchises. In addition to the acquisition amounts above, we released $0.8 million of purchase price holdbacks related to a prior year acquisition. During the year ended December 31, 2018, we acquired the assets of one franchise ( one dealership location) in the Indianapolis, Indiana market and two franchises ( two dealership locations) in the Atlanta, Georgia market for a combined aggregate purchase price of $ 93.2 million . Consideration payable to fund these acquisitions included $ 68.6 million of cash, $ 22.7 million of floor plan borrowings for the purchase of the related new vehicle inventory, and purchase price holdbacks of $ 1.9 million for potential indemnity claims made by us with respect to the acquired franchises. During the year ended December 31, 2017, we acquired the assets of two franchises ( two dealership locations) and one collision center in the Indianapolis, Indiana market for an aggregate purchase price of $80.1 million . We funded these acquisitions with $55.0 million of cash and $25.1 million of floor plan borrowings for the purchase of the related new vehicle inventory. Below is the allocation of purchase price for the acquisitions for the years ended December 31, 2019 and 2018. Goodwill and manufacturer franchise rights associated with our acquisitions will be deductible for federal and state income tax purposes ratably over a 15 -year period. For the Year Ended December 31, 2019 2018 (In millions) Inventory $ 70.9 $ 27.3 Real estate 43.1 23.5 Property and equipment 4.5 0.6 Goodwill 25.9 20.4 Manufacturer franchise rights 65.3 19.9 Loaner vehicles 1.5 1.7 Liabilities assumed (0.8 ) $ (0.2 ) Total purchase price $ 210.4 $ 93.2 On December 11, 2019, we announced the acquisition of substantially all of the assets of the businesses of the Park Place Dealership family of entities (collectively, "Park Place") pursuant to that certain Asset Purchase Agreement, dated as of December 11, 2019, among the Company, Park Place and the other parties thereto (the "Asset Purchase Agreement"), and related agreements and transactions (collectively, the "Acquisition"). See Note 23 "Subsequent Events" of the Notes to Consolidated Financial Statements for more information During the year ended December 31, 2019, we sold one franchise ( one dealership location) and one collision center in the Houston, Texas market. The Company divested $30.1 million of assets, which primarily consisted of inventory and property and equipment, resulting in a pre-tax gain of $11.7 million , which is presented in our accompanying Consolidated Statements of Income as Gain on divestitures. The divested business would not be considered a significant subsidiary as defined in Rule 1-02(w) of Regulation S-X.

ACCOUNTS RECEIVABLE

ACCOUNTS RECEIVABLE	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
ACCOUNTS RECEIVABLE	ACCOUNTS RECEIVABLE Accounts receivable consisted of the following: As of December 31, 2019 2018 (In millions) Vehicle receivables $ 44.8 $ 45.7 Manufacturer receivables 50.4 51.2 Other receivables 42.4 34.7 Total accounts receivable 137.6 131.6 Less—Allowance for doubtful accounts (1.4 ) (1.3 ) Accounts receivable, net $ 136.2 $ 130.3

INVENTORIES

INVENTORIES	12 Months Ended
	Dec. 31, 2019
Inventory Disclosure [Abstract]
INVENTORIES	INVENTORIES Inventories consisted of the following: As of December 31, 2019 2018 (In millions) New vehicles $ 802.6 $ 867.2 Used vehicles 140.1 158.9 Parts and accessories 42.3 41.5 Total inventories $ 985.0 $ 1,067.6 The lower of cost and net realizable value reserves reduced total inventory cost by $6.1 million as of December 31, 2019 and December 31, 2018 . In addition to inventories shown above, we had $67.7 million of inventories classified as Assets held for sale on the accompanying Consolidated Balance Sheet as of December 31, 2019 , associated with pending dealership disposals. As of December 31, 2019 and December 31, 2018 , certain automobile manufacturer incentives reduced new vehicle inventory cost by $9.6 million and $10.1 million , respectively, and reduced new vehicle cost of sales from continuing operations for the years ended December 31, 2019 , 2018 , and 2017 by $45.7 million , $42.4 million , and $40.1 million , respectively.

ASSETS HELD FOR SALE

ASSETS HELD FOR SALE	12 Months Ended
	Dec. 31, 2019
Discontinued Operations and Disposal Groups [Abstract]
ASSETS HELD FOR SALE	ASSETS HELD FOR SALE Assets and liabilities classified as held for sale include (i) assets and liabilities associated with pending dealership disposals,(ii) real estate not currently used in our operations that we are actively marketing to sell and (iii) the related mortgage notes payable, if applicable. A summary of assets held for sale and liabilities associated with assets held for sale is as follows: As of December 31, 2019 2018 Assets: Inventory $ 67.7 $ — Loaners, net 3.0 — Property and equipment, net 69.0 26.3 Operating lease right-of-use assets 6.9 — Goodwill 5.3 — Franchise rights 2.3 — Total Assets held for sale 154.2 26.3 Liabilities: Floor plan notes payable—trade 21.9 — Floor plan notes payable—non-trade 40.9 — Loaners/ Notes payable 3.1 — Current maturities of long-term debt 0.3 — Current maturities of operating leases 4.2 — Long-term debt 27.8 — Operating lease liabilities 2.7 — Total Liabilities associated with assets held for sale 100.9 — Net assets held for sale $ 53.3 $ 26.3 As of December 31, 2019, there were seven franchises ( six dealership locations) and one collision center pending disposition, with assets and liabilities totaling $115.3 million and $92.6 million , respectively. In January 2020, the Company's Board of Directors authorized Management's request for approval to divest of one dealership location. The Company is currently in negotiations with a potential buyer for this dealership. Real estate assets held for sale not currently used in our operations and other real estate assets, totaled $38.9 million and $26.3 million as of December 31, 2019 and December 31, 2018, respectively. As of December 31, 2019 there was $8.3 million of mortgage payable and as of December 31, 2018, no liabilities associated with these real estate assets held for sale. Additionally, during the years ended December 31, 2019 and 2018, we sold two vacant properties with a net book value of $14.6 million and two vacant properties with total net book values of $4.0 million , respectively. We did no t record any impairment expense associated with real estate properties that we were actively marketing to sell during the years ended December 31, 2019 or 2018.

OTHER CURRENT ASSETS

OTHER CURRENT ASSETS	12 Months Ended
	Dec. 31, 2019
Other Assets [Abstract]
OTHER CURRENT ASSETS	OTHER CURRENT ASSETS Other current assets consisted of the following: As of December 31, 2019 2018 (In millions) Loaner vehicles $ 83.8 $ 87.0 Contract assets (see Note 2) 17.1 14.7 Deposits 11.0 0.6 Prepaid expenses 5.8 5.9 Prepaid taxes 4.7 9.1 Other 6.6 4.9 Other current assets $ 129.0 $ 122.2

PROPERTY AND EQUIPMENT, NET

PROPERTY AND EQUIPMENT, NET	12 Months Ended
	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
PROPERTY AND EQUIPMENT, NET	PROPERTY AND EQUIPMENT, NET Property and equipment, net consisted of the following: As of December 31, 2019 2018 (In millions) Land $ 343.8 $ 330.4 Buildings and leasehold improvements 622.9 617.5 Machinery and equipment 99.8 94.8 Furniture and fixtures 63.9 62.2 Company vehicles 8.1 8.8 Construction in progress 42.4 30.1 Gross property and equipment 1,180.9 1,143.8 Less—Accumulated depreciation (271.2 ) (257.7 ) Property and equipment, net (a) $ 909.7 $ 886.1 ______________________________ (a) Amounts reflected for Property and equipment, net as of December 31, 2019 and 2018, excluded $69.0 million and $26.3 million , respectively classified as Assets held for sale. In addition, Property and equipment, net as of December 31, 2019 and 2018 included finance and capital leases of $14.6 million and $2.3 million , respectively. During the years ended December 31, 2019 , 2018 , and 2017 , we capitalized $0.6 million , $0.5 million , and $0.2 million , respectively, of interest in connection with various capital projects to upgrade or remodel our facilities. Depreciation expense was $36.2 million , $33.7 million , and $32.1 million for the years ended December 31, 2019 , 2018 , and 2017 , respectively.

GOODWILL AND INTANGIBLE FRANCHI

GOODWILL AND INTANGIBLE FRANCHISE RIGHTS	12 Months Ended
	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND INTANGIBLE FRANCHISE RIGHTS	GOODWILL AND INTANGIBLE FRANCHISE RIGHTS Our acquisitions have resulted in the recording of goodwill and intangible franchise rights. Goodwill is an asset representing operational synergies and future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible franchise rights is an asset representing our rights under franchise agreements with vehicle manufacturers. The changes in goodwill and intangible franchise rights for the years ended December 31, 2019 and 2018 are as follows: Goodwill (In millions) Balance as of December 31, 2017 (a) $ 160.8 Acquisitions 20.4 Balance as of December 31, 2018 (a) 181.2 Acquisitions 25.9 Divestitures (0.1 ) Reclassified to assets held for sale (5.3 ) Balance as of December 31, 2019 (a) $ 201.7 _____________________________ (a) Net of accumulated impairment losses of $537.7 million recorded prior to the year ended December 31, 2017 . Intangible Franchise Rights (In millions) Balance as of December 31, 2017 $ 49.6 Acquisitions 19.9 Impairments (3.7 ) Balance as of December 31, 2018 $ 65.8 Acquisitions 65.3 Impairments (7.1 ) Reclassified to assets held for sale (2.3 ) Balance as of December 31, 2019 $ 121.7 Goodwill and intangible franchise rights are tested annually as of October 1st or more frequently in the event that facts and circumstances indicate a triggering event has occurred. Goodwill impairment is recognized based on the difference between the carrying value of a reporting unit and its fair value. We elected to perform a qualitative assessment as of October 1, 2019 for all but one reporting unit for which we performed a quantitative assessment. We elected a qualitative assessment for our October 1, 2018 goodwill impairment testing and determined for both assessments as of October 1, 2019 and 2018, that it was more likely than not that the fair value exceeded the carrying value of our reporting units. The quantitative impairment test for franchise rights includes comparison of the estimated fair value to the carrying value for each of our intangible franchise rights. The Company estimates fair value by using a discounted cash flow model (income approach) based on market participant assumptions related to the cash flows directly attributable to the franchise. These assumptions include year-over-year and terminal growth rates, working capital requirements, weighted average cost of capital, future gross margins, and future selling, general, and administrative expenses. We elected to perform a quantitative assessment for our October 1, 2019 and 2018 franchise rights impairment testing. In connection with our testing, we identified the carrying values of certain of our intangible franchise rights exceeded fair value, and as a result, recognized $7.1 million and $3.7 million in pre-tax non-cash impairment charges during the years ended December 31, 2019 and 2018 , respectively.

FLOOR PLAN NOTES PAYABLE_TRADE

FLOOR PLAN NOTES PAYABLE—TRADE	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
FLOOR PLAN NOTES PAYABLE—TRADE	FLOOR PLAN NOTES PAYABLE—TRADE We consider floor plan notes payable to a party that is affiliated with the entity from which we purchase our new vehicle inventory as Floor Plan Notes Payable—Trade on our Consolidated Balance Sheets. Floor plan notes payable—trade, net consisted of the following: As of December 31, 2019 2018 (In millions) Floor plan notes payable—trade (a) $ 146.5 $ 125.3 Floor plan notes payable offset account (16.2 ) (11.3 ) Total floor plan notes payable—trade, net $ 130.3 $ 114.0 ____________________________ (a) Amounts reflected for floor plan notes payable—trade as of December 31, 2019, excluded $21.9 million classified as Liabilities associated with assets held for sale. We have a floor plan facility with the Ford Motor Credit Company ("Ford Credit") to purchase new Ford and Lincoln vehicle inventory. Our floor plan facility with Ford Credit was amended in December 2019 to extend the maturity date from December 5, 2019 to May 31, 2020. This floor plan facility does not have a stated borrowing limitation. We established a floor plan offset account with Ford Credit, that allows us to transfer cash as an offset to floor plan notes payable. These transfers reduce the amount of outstanding new vehicle floor plan notes payable that would otherwise accrue interest, while retaining the ability to transfer amounts from the offset account into our operating cash accounts within one to two days. As a result of using our floor plan offset account, we experience a reduction in Floor plan interest expense on our Consolidated Statements of Income. The representations and covenants contained in the agreement governing our floor plan facility with Ford Credit are customary for financing transactions of this nature. Further, the agreement governing our floor plan facility with Ford Credit also provides for events of default that are customary for financing transactions of this nature, including cross-defaults to other material indebtedness. Upon the occurrence of an event of default, the Company could be required to immediately repay all outstanding amounts under our floor plan facility with Ford Credit.

FLOOR PLAN NOTES PAYABLE_NON-TR

FLOOR PLAN NOTES PAYABLE—NON-TRADE	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
FLOOR PLAN NOTES PAYABLE—NON-TRADE	FLOOR PLAN NOTES PAYABLE—NON-TRADE We consider floor plan notes payable to a party that is not affiliated with the entity from which we purchase our new vehicle inventory as Floor Plan Notes Payable—Non-Trade on our Consolidated Balance Sheets. Floor plan notes payable—non-trade, net consisted of the following: As of December 31, 2019 2018 (In millions) Floor plan notes payable—new non-trade $ 773.6 $ 843.0 Floor plan notes payable—used non-trade — 30.0 Floor plan notes payable offset account (115.9 ) (20.9 ) Total floor plan notes payable—non-trade, net $ 657.7 $ 852.1 ____________________________ (a) Amounts reflected for floor plan notes payable—new non-trade as of December 31, 2019, excluded $40.9 million classified as Liabilities associated with assets held for sale. On September 25, 2019, the Company and certain of its subsidiaries entered into a third amended and restated credit agreement with Bank of America, N.A. ("Bank of America"), as administrative agent, and the other lenders party thereto (the "2019 Senior Credit Facility"). The 2019 Senior Credit Facility amended and restated the Company's pre-existing second amended and restated credit agreement, dated as of July 25, 2016. The 2019 Senior Credit Facility provides for the following, in each case subject to limitations on availability as set forth therein: • a $250.0 million revolving credit facility (the "Revolving Credit Facility") including a $50.0 million sub-limit for letters of credit; • a $1.04 billion new vehicle revolving floor plan facility (the "New Vehicle Floor Plan Facility"); and • a $160.0 million used vehicle revolving floor plan facility (the "Used Vehicle Floor Plan Facility"). Proceeds from borrowings under the 2019 Senior Credit Facility will be used, among other things, (i) to finance the purchase of new and used vehicles by the Company and certain of its subsidiaries, (ii) for working capital needs of the Company and certain of its subsidiaries, and (iii) for other general corporate purposes of the Company and certain of its subsidiaries. Subject to compliance with certain conditions, the 2019 Senior Credit Agreement provides that we have the ability, at our option and subject to the receipt of additional commitments from existing or new lenders, to increase the size of the facilities by up to $350.0 million in the aggregate without lender consent. In addition, we have the ability to convert a portion of our availability under the Revolving Credit Facility to the New Vehicle Floor Plan Facility or the Used Vehicle Floor Plan Facility. The maximum amount we are allowed to convert is determined based on our aggregate revolving commitment under the Revolving Credit Facility, less $50.0 million . In addition, we are able to convert any amounts moved to the New Vehicle Floor Plan Facility or Used Vehicle Floor Plan Facility back to the Revolving Credit Facility. As of December 31, 2019 , we converted $190.0 million of availability under our Revolving Credit Facility to our New Vehicle Floor Plan Facility. We converted this amount to take advantage of the lower commitment fee rates on our new vehicle floor plan facility when compared to our revolving credit facility. In connection, with the New Vehicle Floor Plan Facility, we continue to maintain an offset account with Bank of America that allows us to transfer cash as an offset to floor plan notes payable. These transfers reduce the amount of outstanding new vehicle floor plan notes payable that would otherwise accrue interest, while retaining the ability to transfer amounts from the offset account into our operating cash accounts within one to two days. As a result of the use of our floor plan offset account, we experience a reduction in Floor plan interest expense on our Consolidated Statements of Income. Borrowings under the 2019 Senior Credit Facility bear interest, at our option, based on the London Interbank Offered Rate ("LIBOR") or the Base Rate, in each case plus an Applicable Rate. The Base Rate is the highest of (i) the Federal Funds Rate plus 0.50% , (ii) the Bank of America prime rate, and (iii) one month LIBOR plus 1.00% . Applicable Rate means with respect to the Revolving Credit Facility, a range from 1.00% to 2.00% for LIBOR loans and 0.15% to 1.00% for Base Rate loans, in each case based on the Company's consolidated total lease adjusted leverage ratio. Borrowings under the New Vehicle Floorplan Facility bear interest, at our option, based on LIBOR plus 1.10% or the Base Rate plus 0.10% . Borrowings under the Used Vehicle Floorplan Facility bear interest, at our option, based on LIBOR plus 1.40% or the Base Rate plus 0.40% . In addition to the payment of interest on borrowings outstanding under the 2019 Senior Credit Facility, we are required to pay a quarterly commitment fee on total unused commitments thereunder. The fee for unused commitments under the Revolving Credit Facility is between 0.15% and 0.40% per year, based on the Company's total lease adjusted leverage ratio, and the fee for unused commitments under the New Vehicle Facility Floor Plan and the Used Vehicle Facility Floor Plan Facility is 0.15% per year. The 2019 Senior Credit Facility matures, and all amounts outstanding thereunder will be due and payable, on September 25, 2024. The representations and covenants contained in the 2019 Senior Credit Agreement are customary for financing transactions of this nature, including, among others, a requirement to comply with a minimum consolidated current ratio, minimum consolidated fixed charge coverage ratio and maximum consolidated total lease adjusted leverage ratio, in each case as set out in the 2019 Senior Credit Agreement. In addition, certain other covenants could restrict the Company's ability to incur additional debt, pay dividends or acquire or dispose of assets. The 2019 Senior Credit Agreement also provides for events of default that are customary for financing transactions of this nature, including cross-defaults to other material indebtedness. In certain instances, an event of default under either the Revolving Credit Facility or the Used Vehicle Floorplan Facility could be, or result in, an event of default under the New Vehicle Floorplan Facility, and vice versa. Upon the occurrence of an event of default, the Company could be required to immediately repay all amounts outstanding under the applicable facility. We have established a floor plan notes payable offset account with Ford Motor Credit Company that allows us to transfer cash to the account as an offset of our outstanding Floor Plan Notes Payable—Trade. Additionally, we have a similar floor plan offset account with Bank of America that allows us to offset our outstanding Floor Plan Notes Payable—Non-Trade. These accounts allow us to transfer cash to reduce the amount of outstanding floor plan notes payable that would otherwise accrue interest, while retaining the ability to transfer amounts from the floor plan offset accounts into our operating cash accounts within one to two days. As of December 31, 2019 and December 31, 2018 we had $132.1 million and $32.2 million , respectively, in these floorplan offset accounts. See the "Representations and Covenants" section below under our "Long-Term Debt" footnote for a description of the representations, covenants and events of default contained in the 2019 Senior Credit Facility.

ACCOUNTS PAYABLE AND ACCRUED LI

ACCOUNTS PAYABLE AND ACCRUED LIABILITIES	12 Months Ended
	Dec. 31, 2019
Payables and Accruals [Abstract]
ACCOUNTS PAYABLE AND ACCRUED LIABILITIES	ACCOUNTS PAYABLE AND ACCRUED LIABILITIES Accounts payable and accrued liabilities consisted of the following: As of December 31, 2019 2018 (In millions) Accounts payable $ 81.7 $ 81.9 Loaner vehicles notes payable (a) 83.9 87.5 Accrued compensation 30.5 27.6 Accrued finance and insurance chargebacks 22.9 23.0 Accrued insurance 25.3 20.9 Taxes payable 30.5 23.7 Accrued advertising 5.1 3.9 Accrued interest 6.0 6.6 Other 22.8 23.3 Accounts payable and accrued liabilities $ 308.7 $ 298.4 ____________________________ (a) Amounts reflected for Loaner vehicles notes payable as of December 31, 2019, excluded $3.1 million classified as Liabilities associated with assets held for sale.

LONG-TERM DEBT

LONG-TERM DEBT	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
LONG-TERM DEBT	LONG-TERM DEBT Long-term debt consisted of the following: As of December 31, 2019 2018 (In millions) 6.0% Senior Subordinated Notes due 2024 $ 600.0 $ 600.0 Mortgage notes payable bearing interest at fixed rates (the weighted average interest rates were 5.3% and 5.2% for the years ended December 31, 2019 and 2018, respectively) 100.5 132.2 2018 BofA Real Estate Facility (a) 88.3 25.7 2018 Wells Fargo Master Loan Facility 25.0 25.0 2013 BofA Real Estate Facility 35.5 40.8 2015 Wells Fargo Master Loan Facility (b) 76.8 83.3 Finance lease liability 17.2 3.1 Total debt outstanding 943.3 910.1 Add—unamortized premium on 6.0% Senior Subordinated Notes due 2024 5.1 6.0 Less—debt issuance costs (9.0 ) (10.8 ) Long-term debt, including current portion 939.4 905.3 Less—current portion, net of debt issuance costs (32.4 ) (38.8 ) Long-term debt $ 907.0 $ 866.5 ____________________________ (a) Amounts reflected for the 2018 BofA Real Estate Facility as of December 31, 2019 , exclude $26.6 million classified as Liabilities associated with assets held for sale. (b) Amounts reflected for the 2015 Wells Fargo Master Loan Facility as of December 31, 2019 , exclude $1.5 million classified as Liabilities associated with assets held for sale. The aggregate maturities of long-term debt as of December 31, 2019 are as follows (in millions): 2020 $ 35.7 2021 35.0 2022 33.2 2023 53.2 2024 648.6 Thereafter 165.7 Total maturities of long-term debt $ 971.4 ____________________________ Includes amounts classified as Liabilities associated with assets held for sale. 6.0% Senior Subordinated Notes due 2024 In December 2014, we completed a refinancing of certain of our long-term debt, which included the issuance of $400.0 million of 6.0% Notes, the proceeds of which were used to redeem the $300.0 million in outstanding aggregate principal of our 8.375% Senior Subordinated Notes due 2020 (the " 8.375% Notes"). In October 2015, we completed an add-on issuance of $200.0 million aggregate principal amount of our 6.0% Notes at a price of 104.25% of par, plus accrued interest from June 15, 2015 (the "October 2015 Offering"). After deducting the initial purchasers' discounts and expenses we received net proceeds of approximately $210.2 million from this offering. The $ 8.5 million premium paid by the initial purchasers of the 6.0% Notes was recorded as a component of Long-Term Debt on our Consolidated Balance Sheet and is being amortized as a reduction of interest expense over the remaining term of the 6.0% Notes. Based on the amortization of the debt premium, the effective interest rate on the 6.0% Notes issued in the October 2015 Offering is 5.41% . In addition, we capitalized $3.8 million of costs associated with the issuance and sale of the 6.0% Notes, of which $2.8 million of underwriters fees were withheld from the proceeds received from the issuance. These costs are being amortized to interest expense over the remaining term of the 6.0% Notes using the effective interest method. We are a holding company with no independent assets or operations. For all relevant periods presented, our 6.0% Notes have been fully and unconditionally guaranteed, on a joint and several basis, by substantially all of our subsidiaries. Any subsidiaries that have not guaranteed such notes are "minor" (as defined in Rule 3-10(h) of Regulation S-X). As of December 31, 2019 , there were no significant restrictions on the ability of our subsidiaries to distribute cash to us or our guarantor subsidiaries. Mortgage Notes Payable We have multiple mortgage agreements with finance companies affiliated with our vehicle manufacturers ("captive mortgages") and other lenders. As of December 31, 2019 and 2018 , we had total mortgage notes payable outstanding of $100.5 million and $132.2 million , respectively, which are collateralized by the associated real estate. 2018 BofA Real Estate Facility On November 13, 2018, we entered into a real estate term loan credit agreement (as amended, restated or supplemented from time to time, the “2018 BofA Real Estate Credit Agreement”) with Bank of America, as lender, providing for term loans in an aggregate amount not to exceed $128.1 million , subject to customary terms and conditions (the “2018 BofA Real Estate Facility”). Our right to make draws under the 2018 BofA Real Estate Facility terminated on November 13, 2019. Term loans under our 2018 BofA Real Estate Facility bear interest, at our option, based on LIBOR plus 1.90% or the Base Rate (as described below) plus 0.50% . The Base Rate is the highest of (i) the Federal Funds rate plus 0.50% , (ii) the Bank of America prime rate, and (iii) one month LIBOR plus 1.0% . We are required to make quarterly principal payments of 1.25% of the initial amount of each loan on a twenty year repayment schedule, with a balloon repayment of the outstanding principal amount of loans due on November 13, 2025. Borrowings under the 2018 BofA Real Estate Facility are guaranteed by each of our operating dealership subsidiaries whose real estate is financed under the 2018 BofA Real Estate Facility, and are collateralized by first priority liens, subject to certain permitted exceptions, on all of the real property financed thereunder. As of December 31, 2019 and 2018 , we had $88.3 million and $25.7 million , respectively, in term loans outstanding under the 2018 BofA Real Estate Facility. 2018 Wells Fargo Master Loan Facility On November 16, 2018, certain of our subsidiaries entered into a master loan agreement (the “2018 Wells Fargo Master Loan Agreement” and, together with the 2013 BofA Real Estate Credit Agreement, the 2015 Wells Fargo Master Loan Agreement and the 2018 BofA Real Estate Agreement, the “Existing Real Estate Credit Agreements”) with Wells Fargo Bank, National Association, as lender, which provides for term loans to certain of our subsidiaries that are borrowers under the Wells Fargo Master Loan Agreement in an aggregate amount not to exceed $100.0 million (the "Wells Fargo Master Loan Facility"), subject to customary terms and conditions (the “2018 Wells Fargo Master Loan Facility” and, together with the 2013 BofA Real Estate Facility, the 2015 Wells Fargo Master Loan Facility and the 2018 BofA Real Estate Facility, the “Existing Real Estate Facilities”). Our right to make draws under the 2018 Wells Fargo Master Loan Facility will terminate on June 30, 2020. Term loans under the 2018 Wells Fargo Master Loan Facility bear interest based on LIBOR plus an applicable margin based on a pricing grid ranging from 1.50% per annum to 1.85% per annum based on our consolidated total lease adjusted leverage ratio. We are required to make quarterly principal payments with respect to the initial amount of each loan in 108 equal monthly principal payments based on a hypothetical 19 year amortization schedule, with a balloon repayment of the outstanding principal amount of loans due on December 1, 2028. Borrowings under the 2018 Wells Fargo Master Loan Facility can be voluntarily prepaid in whole or in part any time without premium or penalty. Borrowings under the 2018 Wells Fargo Master Loan Facility are guaranteed by us pursuant to an unconditional guaranty, and all of the real property financed by any of our operating dealership subsidiaries under the 2018 Wells Fargo Master Loan Facility is collateralized by first priority liens, subject to certain permitted exceptions. As of December 31, 2019 and 2018 , we had $25.0 million outstanding borrowings under the 2018 Wells Fargo Master Loan Facility. 2013 BofA Real Estate Facility On September 26, 2013, we entered into a real estate term loan credit agreement (the “2013 BofA Real Estate Credit Agreement”) with Bank of America, N.A. (“Bank of America”), as lender, providing for term loans in an aggregate amount not to exceed $75.0 million , subject to customary terms and conditions (the “2013 BofA Real Estate Facility”). Term loans under our 2013 BofA Real Estate Facility bear interest, at our option, based on LIBOR plus 1.50% or the Base Rate (as described below) plus 0.50% . The Base Rate is the highest of (i) the Federal Funds rate plus 0.50% , (ii) the Bank of America prime rate, and (iii) one month LIBOR plus 1.0% . Our right to make draws under the 2013 BofA Real Estate Facility terminated on December 26, 2013. We are required to make quarterly principal payments of 1.25% of the initial amount of each loan on a twenty year repayment schedule, with a balloon repayment of the outstanding principal amount of loans due on September 26, 2023. Borrowings under the 2013 BofA Real Estate Facility are guaranteed by each of our operating dealership subsidiaries whose real estate is financed under the 2013 BofA Real Estate Facility, and are collateralized by first priority liens, subject to certain permitted exceptions, on all of the real property financed thereunder. As of December 31, 2019 and 2018 , we had $35.5 million and $40.8 million , respectively, in term loans outstanding under the 2013 BofA Real Estate Facility. 2015 Wells Fargo Master Loan Facility On February 3, 2015, certain of our subsidiaries entered into an amended and restated master loan agreement (as amended, restated or supplemented from time to time, the “2015 Wells Fargo Master Loan Agreement”) with Wells Fargo Bank, National Association (“Wells Fargo”), as lender, which provides form term loans to certain of our subsidiaries that are borrowers under the 2015 Wells Fargo Master Loan Agreement in an aggregate amount not to exceed $100.0 million (the “2015 Wells Fargo Master Loan Facility”). Our right to make draws under the 2015 Wells Fargo Master Loan Facility terminated on February 1, 2016. Term loans under the 2015 Wells Fargo Master Loan Facility bear interest based on LIBOR plus 1.85% . We are required to make quarterly principal payments with respect to the initial amount of each loan in 108 equal monthly principal payments based on a hypothetical 19 year amortization schedule, with a balloon repayment of the outstanding principal amount of loans due on February 1, 2025. Borrowings under the 2015 Wells Fargo Master Loan Facility can be voluntarily prepaid in whole or in part any time without premium or penalty. Borrowings under the 2015 Wells Fargo Master Loan Facility are guaranteed by us pursuant to an unconditional guaranty, and all of the real property financed by any of our operating dealership subsidiaries under the 2015 Wells Fargo Master Loan Facility is collateralized by first priority liens, subject to certain permitted exceptions. As of December 31, 2019 and 2018 , we had $76.8 million and $83.3 million , respectively, outstanding under the 2015 Wells Fargo Master Loan Facility. Below is a summary of our outstanding mortgage notes payable, the carrying values of the related collateralized real estate, and years of maturity as of December 31, 2019 and 2018 : As of December 31, 2019 As of December 31, 2018 Mortgage Agreement Aggregate Principal Outstanding Carrying Value of Collateralized Related Real Estate Maturity Dates Aggregate Principal Outstanding Carrying Value of Collateralized Related Real Estate Maturity Dates Captive mortgages $ 80.8 $ 182.1 2020-2024 $ 111.6 $ 185.5 2019-2024 Other mortgage debt 19.7 43.9 2020-2022 20.6 43.3 2020-2022 2018 BofA Real Estate Facility (a) 88.3 123.6 2025 25.7 137.2 2025 2018 Wells Fargo Master Loan Facility 25.0 113.7 2028 25.0 114.3 2028 2013 BofA Real Estate Facility 35.5 74.6 2023 40.8 82.2 2023 2015 Wells Fargo Master Loan Facility (b) 76.8 120.6 2025 83.3 130.2 2025 Total mortgage debt $ 326.1 $ 658.5 $ 307.0 $ 692.7 ____________________________ (a) Amounts reflected for the 2018 BofA Real Estate Facility as of December 31, 2019 , exclude $26.6 million classified as Liabilities associated with assets held for sale. (b) Amounts reflected for the 2015 Wells Fargo Master Loan Facility as of December 31, 2019 , exclude $1.5 million classified as Liabilities associated with assets held for sale. Revolving Credit Facility As discussed above under our "Floor Plan Notes Payable—Non-Trade" footnote, the 2019 Senior Credit Facility includes a $250.0 million Revolving Credit Facility. We may request Bank of America to issue letters of credit on our behalf thereunder up to $50.0 million . Availability under the Revolving Credit Facility is limited by borrowing base calculations. Availability is reduced on a dollar-for-dollar basis by the aggregate face amount of any outstanding letters of credit. As of December 31, 2019 , we converted $190.0 million of borrowing capacity from our Revolving Credit Facility to our New Vehicle Revolving Floor Plan Facility, resulting in $60.0 million of borrowing capacity. In addition, we had $12.7 million in outstanding letters of credit, resulting in $47.3 million of borrowing availability as of December 31, 2019 . Proceeds from borrowings from time to time under the revolving credit facility may be used for among other things, acquisitions, working capital and capital expenditures. Borrowings under the 2019 Senior Credit Facility bear interest, at our option, based on LIBOR or the Base Rate, in each case plus an Applicable Rate. The Base Rate is the highest of (i) the Federal Funds Rate plus 0.50% , (ii) the Bank of America prime rate, and (iii) one month LIBOR plus 1.00% . Applicable Rate means with respect to the Revolving Credit Facility, (i) until the Company delivers a certificate with respect to its consolidated total lease adjusted leverage ratio as of September 30, 2019 to Bank of America, as administrative agent, 1.25% for LIBOR loans and 0.25% for Base Rate loans and (ii) thereafter a range from 1.00% to 2.00% for LIBOR loans and 0.15% to 1.00% for Base Rate loans, in each case based on the Company's consolidated total lease adjusted leverage ratio. Borrowings under the New Vehicle Floorplan Facility bear interest, at our option, based on LIBOR plus 1.10% or the Base Rate plus 0.10% . Borrowings under the Used Vehicle Floorplan Facility bear interest, at our option, based on LIBOR plus 1.40% or the Base Rate plus 0.40% . Stock Repurchase and Dividend Restrictions The 2019 Senior Credit Facility and the Indenture currently allow for restricted payments without limit so long as our consolidated total leverage ratio (as defined in the 2019 Senior Credit Facility and the Indenture) is not greater than 3.0 to 1.0 after giving effect to such proposed restricted payments. Restricted payments generally include items such as dividends and share repurchases, and solely with respect to the Indenture, unscheduled repayments of subordinated debt, or the making of certain investments. In the event that our consolidated total leverage ratio does (or would) exceed 3.0 to 1.0, the 2019 Senior Credit Facility and the Indenture would then also allow for restricted payments under the following mutually exclusive parameters, subject to certain exclusions: • Share repurchases in an aggregate amount not to exceed $20.0 million in any fiscal year; • General restricted payments allowance of $150.0 million ; and • Subject to our continued compliance with a minimum consolidated current ratio, a consolidated fixed charge coverage ratio and a maximum consolidated total lease adjusted leverage ratio, in each case as set out in the Indenture, restricted payments capacity additions (or subtractions if negative) equal to (i) 50% of our net income (as defined in the 2019 Senior Credit Facility and the Indenture beginning on October 1, 2014 and ending on the date of the most recently completed fiscal quarter (the "Measurement Period"), plus (ii) 100% of any cash proceeds we receive from the sale of equity interests during the Measurement Period, minus (iii) the dollar amount of share repurchases made and dividends paid on or after October 1, 2014, subject to certain exceptions. Representations and Covenants We are subject to a number of covenants in our various debt and lease agreements, including those described below. We were in compliance with all of our covenants throughout 2019 . Failure to comply with any of our debt covenants would constitute a default under the relevant debt agreements, which would entitle the lenders under such agreements to terminate our ability to borrow under the relevant agreements and accelerate our obligations to repay outstanding borrowings, if any, unless compliance with the covenants is waived. In many cases, defaults under one of our agreements could trigger cross-default provisions in our other agreements. If we are unable to remain in compliance with our financial or other covenants, we would be required to seek waivers or modifications of our covenants from our lenders, or we would need to raise debt and/or equity financing or sell assets to generate proceeds sufficient to repay such debt. We cannot give any assurance that we would be able to successfully take any of these actions on terms, or at times, that may be necessary or desirable. The representations and covenants contained in the agreement governing the 2019 Senior Credit Facility are customary for financing transactions of this nature including, among others, a requirement to comply with a minimum consolidated current ratio, minimum consolidated fixed charge coverage ratio and maximum consolidated total lease adjusted leverage ratio, in each case as set out in the agreement governing the 2019 Senior Credit Facility. In addition, certain other covenants could restrict the Company's ability to incur additional debt, pay dividends or acquire or dispose of assets. The agreement governing the 2019 Senior Credit Facility also provides for events of default that are customary for financing transactions of this nature, including cross-defaults to other material indebtedness. In certain instances, an event of default under either the Revolving Credit Facility or the Used Vehicle Floor Plan Facility could be, or result in, an event of default under the New Vehicle Floor Plan Facility, and vice versa. Upon the occurrence of an event of default, the Company could be required to immediately repay all amounts outstanding under the applicable facility. The representations and covenants contained in the agreement governing the 2019 Senior Credit Facility are customary for financing transactions of this nature including, among others, a requirement to comply with a minimum consolidated current ratio, minimum consolidated fixed charge coverage ratio and maximum consolidated total lease adjusted leverage ratio, in each case as set out in the agreement governing the 2019 Senior Credit Facility. In addition, certain other covenants could restrict the Company's ability to incur additional debt, pay dividends or acquire or dispose of assets. The agreement governing the 2019 Senior Credit Facility also provides for events of default that are customary for financing transactions of this nature, including cross-defaults to other material indebtedness. In certain instances, an event of default under either the Revolving Credit Facility or the Used Vehicle Floor Plan Facility could be, or result in, an event of default under the New Vehicle Floor Plan Facility, and vice versa. Upon the occurrence of an event of default, the Company could be required to immediately repay all amounts outstanding under the applicable facility. The representations and covenants contained in the 2018 BofA Real Estate Credit Agreement are customary for financing transactions of this nature, including, among others, a requirement to comply with a minimum consolidated current ratio, minimum consolidated fixed charge coverage ratio and maximum consolidated total lease adjusted leverage ratio, in each case as set out in the 2018 BofA Real Estate Credit Agreement. In addition, certain other covenants could restrict our ability to incur additional debt, pay dividends or acquire or dispose of assets. The 2018 BofA Real Estate Credit Agreement also provides for events of default that are customary for financing transactions of this nature, including cross-defaults to other material indebtedness. Upon the occurrence of an event of default, we could be required by the 2018 BofA Real Estate Credit Agreement to immediately repay all amounts outstanding thereunder. The representations, warranties and covenants contained in the 2018 Wells Fargo Master Loan Agreement and the related documents are customary for financing transactions of this nature, including, among others, a requirement to comply with a minimum consolidated current ratio, minimum consolidated fixed charge coverage ratio and maximum consolidated total lease adjusted leverage ratio. In addition, certain other covenants could restrict our ability to incur additional debt, pay dividends or acquire or dispose of assets. The 2018 Wells Fargo Master Loan Agreement also provides for events of default that are customary for financing transactions of this nature, including cross-defaults to other material indebtedness. Upon the occurrence of an event of default, we could be required by the 2018 Wells Fargo Master Loan Facility to immediately repay all amounts outstanding thereunder. The representations, warranties and covenants contained in the 2015 Wells Fargo Master Loan Agreement and the related documents are customary for financing transactions of this nature, including, among others, a requirement to comply with a minimum consolidated current ratio, minimum consolidated fixed charge coverage ratio and maximum consolidated total lease adjusted leverage ratio. In addition, certain other covenants could restrict our ability to incur additional debt, pay dividends or acquire or dispose of assets. The 2015 Wells Fargo Master Loan Agreement also provides for events of default that are customary for financing transactions of this nature, including cross-defaults to other material indebtedness. Upon the occurrence of an event of default, we could be required by the 2015 Wells Fargo Master Loan Facility to immediately repay all amounts outstanding thereunder. The representations and covenants contained in the 2013 BofA Real Estate Credit Agreement are customary for financing transactions of this nature, including, among others, a requirement to comply with a minimum consolidated current ratio, minimum consolidated fixed charge coverage ratio and maximum consolidated total lease adjusted leverage ratio, in each case as set out in the 2013 BofA Real Estate Credit Agreement. In addition, certain other covenants could restrict our ability to incur additional debt, pay dividends or acquire or dispose of assets. The 2018 BofA Real Estate Credit Agreement also provides for events of default that are customary for financing transactions of this nature, including cross-defaults to other material indebtedness. Upon the occurrence of an event of default, we could be required by the 2013 BofA Real Estate Credit Agreement to immediately repay all amounts outstanding thereunder.

FINANCIAL INSTRUMENTS AND FAIR

FINANCIAL INSTRUMENTS AND FAIR VALUE	12 Months Ended
	Dec. 31, 2019
Derivatives and Fair Value [Abstract]
FINANCIAL INSTRUMENTS AND FAIR VALUE	FINANCIAL INSTRUMENTS AND FAIR VALUE In determining fair value, we use various valuation approaches, including market and income approaches. Accounting standards establish a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the asset or liability developed based on market data obtained from independent sources. Unobservable inputs are inputs that reflect our assumptions about the assumptions market participants would use in pricing the asset or liability, developed based on the best information available in the circumstances. The hierarchy is broken down into three levels based on the reliability of inputs as follows: Level 1-Valuations based on quoted prices in active markets for identical assets or liabilities that we have the ability to access. Level 2-Valuations based on quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly. Assets and liabilities utilizing Level 2 inputs include interest rate swap instruments, exchange-traded debt securities that are not actively traded or do not have a high trading volume, mortgage notes payable, and certain real estate properties on a non-recurring basis. Level 3-Valuations based on inputs that are unobservable and significant to the overall fair value measurement. Asset and liability measurements utilizing Level 3 inputs include those used in estimating the fair value of certain non-financial assets and non-financial liabilities in purchase acquisitions and those used in the assessment of impairment for goodwill and intangible franchise rights. The availability of observable inputs can vary and is affected by a wide variety of factors. To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment required to determine fair value is greatest for instruments categorized in Level 3. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the level in the fair value hierarchy within which the fair value measurement is disclosed is determined based on the lowest level input that is significant to the fair value measurement. Fair value is a market-based exit price measure considered from the perspective of a market participant who holds the asset or owes the liability rather than an entity-specific measure. Therefore, even when market assumptions are not readily available, our assumptions are set to reflect those that market participants would use in pricing the asset or liability at the measurement date. We use inputs that are current as of the measurement date, including during periods of significant market fluctuations. Financial instruments consist primarily of cash and cash equivalents, contracts-in-transit, accounts receivable, cash surrender value of corporate-owned life insurance policies, accounts payable, floor plan notes payable, subordinated long-term debt, mortgage notes payable, and interest rate swap instruments. The carrying values of our financial instruments, with the exception of subordinated long-term debt and mortgage notes payable, approximate fair value due to (i) their short-term nature, (ii) recently completed market transactions, or (iii) existence of variable interest rates, which approximate market rates. The fair value of our subordinated long-term debt is based on reported market prices in an inactive market that reflects Level 2 inputs. We estimate the fair value of our mortgage notes payable using a present value technique based on current market interest rates for similar types of financial instruments that reflect Level 2 inputs. A summary of the carrying values and fair values of our 6.0% Notes and our mortgage notes payable is as follows: As of December 31, 2019 2018 (In millions) Carrying Value: 6.0% Senior Subordinated Notes due 2024 $ 598.8 $ 606.0 Mortgage notes payable (a) 323.4 307.0 Total carrying value $ 922.2 $ 913.0 Fair Value: 6.0% Senior Subordinated Notes due 2024 $ 619.5 $ 570.0 Mortgage notes payable (a) 364.2 306.7 Total fair value $ 983.7 $ 876.7 ____________________________ (a) Excludes amounts classified as Liabilities associated with assets held for sale. Interest Rate Swap Agreements In June 2015, we entered into an interest rate swap agreement with a notional principal amount of $100.0 million . This swap was designed to provide a hedge against changes in variable rate cash flows regarding fluctuations in the one month LIBOR, through maturity in February 2025. The notional values of this swap as of December 31, 2019 and 2018 , were $79.8 million and $85.1 million , respectively, and the notional value will reduce over its remaining term to $53.1 million at maturity. In November 2013, we entered into an interest rate swap agreement with a notional principal amount of $75.0 million . This swap was designed to provide a hedge against changes in variable rate cash flows regarding fluctuations in the one month LIBOR, through maturity in September 2023. The notional values of this swap as of December 31, 2019 and 2018 , were $52.7 million and $56.5 million , respectively, and the notional value will reduce over its remaining term to $38.7 million at maturity. The fair value of cash flow swaps is calculated as the present value of expected future cash flows, determined on the basis of forward interest rates and present value factors. Fair value estimates reflect a credit adjustment to the discount rate applied to all expected cash flows under the swaps. Other than this input, all other inputs used in the valuation for these swaps are designated to be Level 2 fair values. The fair value of our swaps for the years ended December 31, 2019 and 2018 , reflect a liability of $3.8 million and an asset of $0.6 million , respectively. The following table provides information regarding the fair value of our interest rate swap agreements and the impact on the Consolidated Balance Sheets: As of December 31, 2019 2018 (In millions) Other current liabilities/(assets) $ 0.9 $ (0.2 ) Other long-term liabilities/(assets) 2.9 (0.4 ) Total fair value $ 3.8 $ (0.6 ) Both of our interest rate swaps qualify for cash flow hedge accounting treatment. These interest rate swaps are marked to market at each reporting date and any unrealized gain or losses are included in accumulated other comprehensive income and reclassified to interest expense in the same period or periods during which the hedged transactions affect earnings. Information about the effects of our interest rate swap agreements on the accompanying Consolidated Statements of Income and Consolidated Statements of Comprehensive Income, are as follows (in millions): For the Year Ended December 31, Results Recognized in Accumulated Other Comprehensive Loss (Effective Portion) Location of Results Reclassified from Accumulated Other Comprehensive Loss to Earnings Results Reclassified from Accumulated Other Comprehensive Loss to Earnings 2019 $ (4.4 ) Other interest expense, net $ — 2018 $ 1.8 Swap interest expense $ (0.5 ) 2017 $ (0.1 ) Swap interest expense $ (2.0 ) On the basis of yield curve conditions as of December 31, 2019 and including assumptions about future changes in fair value, we expect the amount to be reclassified out of Accumulated other comprehensive loss into earnings within the next 12 months will be losses of $0.9 million .

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The components of income tax expense from continuing operations are as follows: For the Years Ended December 31, 2019 2018 2017 (In millions) Current: Federal $ 46.3 $ 43.8 $ 59.1 State 8.0 7.1 8.3 Total current income tax expense 54.3 50.9 67.4 Deferred: Federal 5.5 3.9 1.2 State (0.3 ) 2.0 1.4 Total deferred income tax expense 5.2 5.9 2.6 Total income tax expense $ 59.5 $ 56.8 $ 70.0 A reconciliation of the statutory federal rate to the effective tax rate from continuing operations is as follows (dollar amounts shown in millions) : For the Years Ended December 31, 2019 % 2018 % 2017 % Income tax provision at the statutory rate $ 51.2 21.0 $ 47.2 21.0 $ 73.2 35.0 State income tax expense, net of federal benefit 7.8 3.2 8.7 3.9 6.4 3.0 Non-deductible / non-tax items 0.6 0.2 0.4 0.2 (0.3 ) (0.1 ) Effect of enactment of tax reform — — 0.6 0.2 (7.9 ) (3.8 ) Adjustments and settlements — — — — (0.6 ) (0.3 ) Other, net (0.1 ) — (0.1 ) — (0.8 ) (0.3 ) Income tax expense $ 59.5 24.4 $ 56.8 25.3 $ 70.0 33.5 Deferred income tax asset and liability components consisted of the following: As of December 31, 2019 2018 (In millions) Deferred income tax assets: F&I chargeback liabilities $ 11.8 $ 11.0 Other accrued liabilities 2.1 3.2 Stock-based compensation 2.2 2.4 Operating lease right-of-use assets 18.7 — Other, net 9.0 3.9 Total deferred income tax assets 43.8 20.5 Deferred income tax liabilities: Intangible asset amortization (16.4 ) (12.5 ) Depreciation (33.4 ) (26.4 ) Operating lease liabilities (17.7 ) — Other, net (2.3 ) (3.3 ) Total deferred income tax liabilities (69.8 ) (42.2 ) Net deferred income tax liabilities $ (26.0 ) $ (21.7 ) There were no valuation allowances recorded against the deferred tax assets as of December 31, 2019 or 2018 . As of December 31, 2019, we had income taxes payable of $1.3 million , which is included in Accounts payable and accrued liabilities. As of December 31, 2018, we had pre-paid income taxes of $4.6 million which was included in Other current assets. There was no unrecognized tax benefits as of December 31, 2019, 2018 or 2017. The statutes of limitations related to our consolidated Federal income tax returns are closed for all tax years up to and including 2015. The expiration of the statutes of limitations related to the various state income tax returns that we and our subsidiaries file varies by state. The 2012 through 2018 tax years generally remain subject to examination by most state tax authorities. We believe that our tax positions comply with applicable tax law and that we have adequately provided for these matters. Tax Reform On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Act. The Tax Act made broad and complex changes to the U.S. tax code that affects 2017, including, but not limited to, accelerated depreciation that will allow for full expensing of qualified property. The Tax Act also established new tax laws including a reduction in the U.S. federal corporate income tax rate from 35% to 21%. The SEC staff issued SAB 118 on December 22, 2017, which provided guidance on accounting for the tax effects of the Tax Act. SAB 118 allowed for a measurement period, not to extend beyond one year from the Tax Act enactment date, for companies to complete the accounting under ASC 740, Income Taxes. In 2017, we remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which was generally 21%. We recorded a $7.9 million reduction to our net deferred tax liability for the year ended December 31, 2017 related to the remeasurement of our deferred tax balance. During the third quarter of 2018, the IRS released Notice 2018-68, which clarified a number of changes made to Section 162(m) of the Code by the Tax Act. As a result of this new guidance, we recorded $0.6 million of additional income tax expense related to an adjustment to the December 31, 2017 deferred tax asset for certain components of share-based compensation. After considering the additional guidance issued by the U.S. Treasury Department, state tax authorities and other standard-setting bodies, we completed our accounting for the Tax Act in 2018.

OTHER LONG-TERM LIABILITIES

OTHER LONG-TERM LIABILITIES	12 Months Ended
	Dec. 31, 2019
Other Liabilities Disclosure [Abstract]
OTHER LONG-TERM LIABILITIES	OTHER LONG-TERM LIABILITIES Other long-term liabilities consisted of the following: As of December 31, 2019 2018 (In millions) Accrued finance and insurance chargebacks $ 22.9 $ 21.2 Deferred rent — 4.5 Interest rate swap 2.9 — Unclaimed property 2.9 3.3 Other 3.7 1.7 Other long-term liabilities $ 32.4 $ 30.7

SUPPLEMENTAL CASH FLOW INFORMAT

SUPPLEMENTAL CASH FLOW INFORMATION	12 Months Ended
	Dec. 31, 2019
Supplemental Cash Flow Information [Abstract]
SUPPLEMENTAL CASH FLOW INFORMATION	SUPPLEMENTAL CASH FLOW INFORMATION During the years ended December 31, 2019 , 2018 , and 2017 , we made interest payments, including amounts capitalized, totaling $91.2 million , $82.5 million , and $76.0 million , respectively. Included in these interest payments are $38.6 million , $31.2 million , and $22.3 million , of floor plan interest payments for the years ended December 31, 2019 , 2018 , and 2017 , respectively. During the years ended December 31, 2019 , 2018 , and 2017 we made income tax payments, net of refunds received, totaling $48.4 million , $40.4 million , and $102.7 million , respectively. During the years ended December 31, 2019 , 2018 , and 2017 , we transferred $141.0 million , $193.9 million , and $156.2 million , respectively, of loaner vehicles from Other current assets to Inventory on our Consolidated Balance Sheets. During the year ended December 31, 2017, we had non-cash investing and financing activities of $4.1 million related to purchases of real estate properties that were previously leased. The following items are included in Other adjustments, net to reconcile net income to net cash provided by operating activities: For the Years Ended December 31, 2019 2018 2017 Amortization of debt issuance costs $ 2.5 $ 2.5 $ 3.2 Loss on disposal of fixed assets 2.6 0.9 2.1 Other individually immaterial items (0.3 ) (0.3 ) (1.0 ) Other adjustments, net $ 4.8 $ 3.1 $ 4.3

LEASES

LEASES	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
LEASES	LEASES Effective January 1, 2019, the Company adopted the new lease accounting guidance in ASC 842. The new standard establishes a right-of-use ("ROU") model that requires a lessee to record an ROU asset and a lease liability on the balance sheet for all leases with terms in excess of 12 months. Leases are classified as either finance or operating, with classification impacting the pattern of expense recognition in the income statement. The Company elected the package of practical expedients permitted in ASC 842. Accordingly, the Company accounted for its existing operating leases as an operating lease under the new guidance, without reassessing (a) whether the contract contains a lease under ASC 842, (b) whether classification of the operating lease would be different in accordance with ASC 842, or (c) whether the unamortized initial direct costs before transition adjustments (as of December 31, 2018) would have met the definition of initial direct costs in ASC 842 at lease commencement. In addition, the Company opted for the transition relief method specified in Accounting Standards Update No. 2018-11, which allowed for the effective date of the new leases standard as the date of initial application on transition. As a result of this election the Company (a) did not adjust comparative period financial information for the effects of ASC 842; (b) made the new required lease disclosures for periods after the effective date; and (c) carried forward our ASC 840 disclosures - see Note 19 "Leases (Prior to Adoption of ASC 842)" for comparative periods. As a result of the adoption of ASC 842, the Company recorded a right-of-use asset of $86.9 million , which represents the lease liability reduced for deferred rent amounts of $4.4 million and a lease liability of $91.3 million , which represents the present value of remaining lease payments, discounted using the Company’s incremental borrowing rates based on the remaining lease terms. We lease real estate and equipment primarily under operating lease agreements. For leases with terms in excess of 12 months, we record a ROU asset and lease liability based on the present value of lease payments over the lease term. Escalation clauses, lease payments dependent on existing rates/indexes, renewal options, and purchase options are included within the determination of lease payments when appropriate. We have elected the practical expedient not to separate lease and non-lease components for all leases that qualify, except for information technology assets that are embedded within service agreements (such as software license arrangements). When available, the implicit rate is utilized to discount lease payments to present value; however, substantially all of our leases do not provide a readily determinable implicit rate. Therefore, we estimate our incremental borrowing rate to discount the lease payments based on information available at lease commencement. Balance Sheet Presentation As of Leases Classification December 31, 2019 (In millions) Assets: Current Operating Operating lease right-of-use assets $ 65.6 Operating Assets held for sale 6.9 Non-Current Finance Property and equipment, net 14.6 Total right-of-use assets $ 87.1 Liabilities: Current Operating Current maturities of operating leases $ 17.0 Operating Liabilities held for sale 4.2 Finance Current maturities of long-term debt 0.6 Non-Current Operating Operating lease liabilities 52.6 Operating Liabilities held for sale 2.7 Finance Long-term debt 16.6 Total lease liabilities $ 93.7 Lease Term and Discount Rate As of December 31, 2019 Weighted Average Lease Term - Operating Leases 5.7 years Weighted Average Lease Term - Finance Lease 1.2 years Weighted Average Discount Rate - Operating Leases 4.7 % Weighted Average Discount Rate - Finance Lease 4.1 % Lease Costs The following table provides certain information related to the lease costs for finance and operating leases during the year ended December 31, 2019 . For the Year Ended December 31, 2019 (In millions) Finance lease cost (Interest) $ 0.7 Operating lease cost 23.3 Short-term lease cost 2.7 Variable lease cost 1.0 $ 27.7 Supplemental Cash Flow Information The following table presents supplemental cash flow information for leases during the year ended December 31, 2019 . For the Year Ended December 31, 2019 (In millions) Supplemental Cash Flow: Cash paid for amounts included in the measurements of lease liabilities Operating cash flows from finance lease $ 0.7 Operating cash flows from operating leases $ 23.7 Financing cash flows from finance lease $ 0.4 Right-of-use assets obtained in exchange for new finance lease liabilities $ 17.7 Right-of-use assets obtained in exchange for new operating lease liabilities $ 14.4 Changes to finance lease right-of-use asset resulting from lease reassessment event $ (3.1 ) During the twelve months ended December 31, 2019 , we reassessed and remeasured an existing real estate lease, which was previously accounted for as an operating lease and finance lease for the land and building elements, respectively, due to the presence of a purchase price option which we concluded we are now reasonably certain to exercise. As reflected within the table above, we reduced a portion of the new finance lease right-of-use asset based on the existing finance lease liability at the time of remeasurement. The table below reconciles the undiscounted cash flows for each of the first five years and total of the remaining years to the finance lease liabilities and operating lease liabilities as of December 31, 2019 . Finance Operating (In millions) 2020 $ 1.3 $ 24.2 2021 16.8 21.1 2022 — 15.7 2023 — 7.6 2024 — 3.8 Thereafter — 17.4 Total minimum lease payments $ 18.1 $ 89.8 Less: Amount of lease payments representing interest (0.9 ) (13.3 ) Present value of future minimum lease payments $ 17.2 $ 76.5 Less: current obligations under leases (0.6 ) (21.2 ) Long-term lease obligation $ 16.6 $ 55.3 Certain of our lease agreements include financial covenants and incorporate by reference the financial covenants set forth in the 2019 Senior Credit Facility. A breach of any of these covenants could immediately give rise to certain landlord remedies under our various lease agreements, the most severe of which include the following: (i) termination of the applicable lease and/or other leases with the same or an affiliated landlord under a cross-default provision, (ii) eviction from the premises; and (iii) the landlord having a claim for various damages.
LEASES	LEASES Effective January 1, 2019, the Company adopted the new lease accounting guidance in ASC 842. The new standard establishes a right-of-use ("ROU") model that requires a lessee to record an ROU asset and a lease liability on the balance sheet for all leases with terms in excess of 12 months. Leases are classified as either finance or operating, with classification impacting the pattern of expense recognition in the income statement. The Company elected the package of practical expedients permitted in ASC 842. Accordingly, the Company accounted for its existing operating leases as an operating lease under the new guidance, without reassessing (a) whether the contract contains a lease under ASC 842, (b) whether classification of the operating lease would be different in accordance with ASC 842, or (c) whether the unamortized initial direct costs before transition adjustments (as of December 31, 2018) would have met the definition of initial direct costs in ASC 842 at lease commencement. In addition, the Company opted for the transition relief method specified in Accounting Standards Update No. 2018-11, which allowed for the effective date of the new leases standard as the date of initial application on transition. As a result of this election the Company (a) did not adjust comparative period financial information for the effects of ASC 842; (b) made the new required lease disclosures for periods after the effective date; and (c) carried forward our ASC 840 disclosures - see Note 19 "Leases (Prior to Adoption of ASC 842)" for comparative periods. As a result of the adoption of ASC 842, the Company recorded a right-of-use asset of $86.9 million , which represents the lease liability reduced for deferred rent amounts of $4.4 million and a lease liability of $91.3 million , which represents the present value of remaining lease payments, discounted using the Company’s incremental borrowing rates based on the remaining lease terms. We lease real estate and equipment primarily under operating lease agreements. For leases with terms in excess of 12 months, we record a ROU asset and lease liability based on the present value of lease payments over the lease term. Escalation clauses, lease payments dependent on existing rates/indexes, renewal options, and purchase options are included within the determination of lease payments when appropriate. We have elected the practical expedient not to separate lease and non-lease components for all leases that qualify, except for information technology assets that are embedded within service agreements (such as software license arrangements). When available, the implicit rate is utilized to discount lease payments to present value; however, substantially all of our leases do not provide a readily determinable implicit rate. Therefore, we estimate our incremental borrowing rate to discount the lease payments based on information available at lease commencement. Balance Sheet Presentation As of Leases Classification December 31, 2019 (In millions) Assets: Current Operating Operating lease right-of-use assets $ 65.6 Operating Assets held for sale 6.9 Non-Current Finance Property and equipment, net 14.6 Total right-of-use assets $ 87.1 Liabilities: Current Operating Current maturities of operating leases $ 17.0 Operating Liabilities held for sale 4.2 Finance Current maturities of long-term debt 0.6 Non-Current Operating Operating lease liabilities 52.6 Operating Liabilities held for sale 2.7 Finance Long-term debt 16.6 Total lease liabilities $ 93.7 Lease Term and Discount Rate As of December 31, 2019 Weighted Average Lease Term - Operating Leases 5.7 years Weighted Average Lease Term - Finance Lease 1.2 years Weighted Average Discount Rate - Operating Leases 4.7 % Weighted Average Discount Rate - Finance Lease 4.1 % Lease Costs The following table provides certain information related to the lease costs for finance and operating leases during the year ended December 31, 2019 . For the Year Ended December 31, 2019 (In millions) Finance lease cost (Interest) $ 0.7 Operating lease cost 23.3 Short-term lease cost 2.7 Variable lease cost 1.0 $ 27.7 Supplemental Cash Flow Information The following table presents supplemental cash flow information for leases during the year ended December 31, 2019 . For the Year Ended December 31, 2019 (In millions) Supplemental Cash Flow: Cash paid for amounts included in the measurements of lease liabilities Operating cash flows from finance lease $ 0.7 Operating cash flows from operating leases $ 23.7 Financing cash flows from finance lease $ 0.4 Right-of-use assets obtained in exchange for new finance lease liabilities $ 17.7 Right-of-use assets obtained in exchange for new operating lease liabilities $ 14.4 Changes to finance lease right-of-use asset resulting from lease reassessment event $ (3.1 ) During the twelve months ended December 31, 2019 , we reassessed and remeasured an existing real estate lease, which was previously accounted for as an operating lease and finance lease for the land and building elements, respectively, due to the presence of a purchase price option which we concluded we are now reasonably certain to exercise. As reflected within the table above, we reduced a portion of the new finance lease right-of-use asset based on the existing finance lease liability at the time of remeasurement. The table below reconciles the undiscounted cash flows for each of the first five years and total of the remaining years to the finance lease liabilities and operating lease liabilities as of December 31, 2019 . Finance Operating (In millions) 2020 $ 1.3 $ 24.2 2021 16.8 21.1 2022 — 15.7 2023 — 7.6 2024 — 3.8 Thereafter — 17.4 Total minimum lease payments $ 18.1 $ 89.8 Less: Amount of lease payments representing interest (0.9 ) (13.3 ) Present value of future minimum lease payments $ 17.2 $ 76.5 Less: current obligations under leases (0.6 ) (21.2 ) Long-term lease obligation $ 16.6 $ 55.3 Certain of our lease agreements include financial covenants and incorporate by reference the financial covenants set forth in the 2019 Senior Credit Facility. A breach of any of these covenants could immediately give rise to certain landlord remedies under our various lease agreements, the most severe of which include the following: (i) termination of the applicable lease and/or other leases with the same or an affiliated landlord under a cross-default provision, (ii) eviction from the premises; and (iii) the landlord having a claim for various damages.

LEASE OBLIGATIONS

LEASE OBLIGATIONS	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Leases Obligations	LEASES (PRIOR TO ADOPTION OF ASC 842) We lease real estate and equipment primarily under operating lease agreements, most of which have terms ranging from one to twenty years . Escalation clauses, lease payments dependent on existing rates/indexes, and other lease incentives are included in the minimum lease payments and are recognized on a straight-line basis over the minimum lease term. Rent expense under such arrangements totaled $25.6 million and $26.7 million for the years ended December 31, 2018 , and 2017 , respectively. During the year ended December 31, 2018 , we entered into one transaction in which we purchased previously leased real estate for $4.4 million . During the year ended December 31, 2017 , we entered into two transactions in which we purchased previously leased real estate for an aggregate purchase price of $9.5 million . These transactions included the termination of the related lease obligations, resulting in $0.2 million of lease termination charges, which were included in Other operating (income) expenses, net in our Consolidated Statement of Income for the year ended December 31, 2017 . Future minimum payments under non-cancelable leases with initial terms in excess of one year at December 31, 2018 , were as follows: Capital Operating (In millions) 2019 $ 0.4 $ 22.5 2020 0.4 22.2 2021 0.4 19.2 2022 0.4 14.0 2023 0.4 6.0 Thereafter 2.8 25.5 Total minimum lease payments $ 4.8 $ 109.4 Less: Amounts representing interest (1.7 ) N/A $ 3.1 $ 109.4

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Our dealerships are party to dealer and framework agreements with applicable vehicle manufacturers. In accordance with these agreements, each dealership has certain rights and is subject to restrictions typical in the industry. The ability of these manufacturers to influence the operations of the dealerships or the loss of any of these agreements could have a materially negative impact on our operating results. In some instances, manufacturers may have the right, and may direct us, to implement costly capital improvements to dealerships as a condition to entering into, renewing, or extending franchise agreements with them. Manufacturers also typically require that their franchises meet specific standards of appearance. These factors, either alone or in combination, could cause us to use our financial resources on capital projects that we might not have planned for or otherwise determined to undertake. From time to time, we and our dealerships are or may become involved in various claims relating to, and arising out of, our business and our operations. These claims may involve, but not be limited to, financial and other audits by vehicle manufacturers or lenders and certain federal, state, and local government authorities, which have historically related primarily to (i) incentive and warranty payments received from vehicle manufacturers, or allegations of violations of manufacturer agreements or policies, (ii) compliance with lender rules and covenants, and (iii) payments made to government authorities relating to federal, state, and local taxes, as well as compliance with other government regulations. Claims may also arise through litigation, government proceedings, and other dispute resolution processes. Such claims, including class actions, could relate to, but may not be limited to, the practice of charging administrative fees and other fees and commissions, employment-related matters, truth-in-lending and other dealer assisted financing obligations, contractual disputes, actions brought by governmental authorities, and other matters. We evaluate pending and threatened claims and establish loss contingency reserves based upon outcomes we currently believe to be probable and reasonably estimable. We believe we have adequately accrued for the potential impact of loss contingencies that are probable and reasonably estimable. Based on our review of the various types of claims currently known to us, there is no indication of material reasonably possible losses in excess of amounts accrued in the aggregate. We currently do not anticipate that any known claim will materially adversely affect our financial condition, liquidity, or results of operations. However, the outcome of any matter cannot be predicted with certainty, and an unfavorable resolution of one or more matters presently known or arising in the future could have a material adverse effect on our financial condition, liquidity, or results of operations. A significant portion of our business involves the sale of vehicles, parts, or vehicles composed of parts that are manufactured outside the United States. As a result, our operations are subject to customary risks of importing merchandise, including fluctuations in the relative values of currencies, import duties, exchange controls, trade restrictions, work stoppages, and general political and socio-economic conditions in foreign countries. The United States or the countries from which our products are imported may, from time to time, impose new quotas, duties, tariffs, or other restrictions; or adjust presently prevailing quotas, duties, or tariffs, which may affect our operations, and our ability to purchase imported vehicles and/or parts at reasonable prices. Substantially all of our facilities are subject to federal, state and local provisions regarding the discharge of materials into the environment. Compliance with these provisions has not had, nor do we expect such compliance to have, any material effect upon our capital expenditures, net earnings, financial condition, liquidity or competitive position. We believe that our current practices and procedures for the control and disposition of such materials comply with applicable federal, state, and local requirements. No assurances can be provided, however, that future laws or regulations, or changes in existing laws or regulations, would not require us to expend significant resources in order to comply therewith. We had $12.7 million of letters of credit outstanding as of December 31, 2019 , which are required by certain of our insurance providers. In addition, as of December 31, 2019 , we maintained a $5.1 million surety bond line in the ordinary course of our business. Our letters of credit and surety bond line are considered to be off balance sheet arrangements. Our other material commitments include (i) floor plan notes payable, (ii) operating leases, (iii) long-term debt and (iv) interest on long-term debt, as described elsewhere herein.

SHARE-BASED COMPENSATION AND EM

SHARE-BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS	12 Months Ended
	Dec. 31, 2019
Compensation Related Costs [Abstract]
SHARE-BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS	SHARE-BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS On March 13, 2012, our Board of Directors, upon the recommendation of our Compensation and Human Resources Committee, approved the 2012 Equity Incentive Plan (the "2012 Plan"). On April 18, 2012, our shareholders approved the 2012 Plan, which replaced our previous equity incentive plan. The 2012 Plan expires on March 13, 2022 and provides for the grant of options, performance share units, restricted share units, and shares of restricted stock to our directors, officers, and employees in the total amount of 1.5 million shares. On April 17, 2019, the stockholders of the Company approved the Asbury Automotive Group, Inc. 2019 Equity and Incentive Compensation Plan (the "2019 Plan") and authorized a total of 1,590,000 shares of common stock for issuance under the 2019 Plan ("Plan Shares"). The Plan Shares include 641,363 shares of common stock which remained unissued under the 2012 Plan. No further grants of awards will be made under the 2012 Plan; however outstanding awards under the 2012 Plan will continue in effect in accordance with their terms and conditions. There were approximately 1.6 million shares available for grant in accordance with the 2019 Plan as of December 31, 2019 . We issue shares of our common stock upon the vesting of performance share units or restricted stock. These shares are issued from our authorized and not outstanding common stock. In addition, in connection with the vesting of performance share units or restricted stock, we expect to repurchase a portion of the shares issued equal to the amount of employee income tax withholding. We have recognized $12.5 million ( $3.1 million tax benefit), $10.5 million ( $2.6 million tax benefit), and $13.6 million ( $4.5 million tax benefit) in share-based compensation expense for the years ended December 31, 2019 , 2018 , and 2017 , respectively. As of December 31, 2019 , there was $11.9 million of total unrecognized share-based compensation expense related to non-vested share-based awards granted under the 2012 Plan, and the weighted average period over which it is expected to be recognized is 2.13 years . Further, we expect to recognize $6.8 million of this expense in 2020, $3.3 million in 2021, and $1.8 million in 2022. Performance Share Units During the year ended December 31, 2019 , the Compensation and Human Resources Committee of the Board of Directors approved the grant of up to 134,758 performance share units, which represents 150% of the target award. Performance share units provide an opportunity for the employee-recipient to receive a number of shares of our common stock based on our performance during a specified year period following the grant as measured against objective performance goals as determined by the Compensation and Human Resources Committee of our Board of Directors. The actual number of units earned may range from 0% to 150% of the target number of units depending upon achievement of the performance goals. Performance share units vest in three equal annual installments with one-third of the award vesting on each of the (i) later of the first anniversary of the grant date, or the date the Compensation and Human Resources Committee determines the actual award, (ii) second anniversary of the grant date and (iii) third anniversary of the grant date. Upon vesting, each performance share unit equals one share of common stock of the Company. Compensation cost for performance share units is based on the closing price of our common stock on the date of grant and the ultimate performance level achieved, and is recognized on a graded basis over the three -year vesting period. The following table summarizes information about performance share units for 2019 : Shares Weighted Average Grant Date Fair Value Non-vested at January 1, 2019 205,736 $ 61.28 Granted 134,758 69.67 Vested (101,377 ) 58.87 Forfeited or unearned (33,827 ) 66.49 Non-vested at December 31, 2019 205,290 $ 66.92 The weighted average grant-date fair value of performance share units and total fair value of performance share units vested are summarized in the following table: For the Years Ended December 31, 2019 2018 2017 Weighted average grant-date fair value of performance share units granted $ 69.67 $ 68.50 $ 65.65 Total fair value of performance share units vested (in millions) $ 6.0 $ 6.4 $ 6.5 Restricted Stock Awards During the year ended December 31, 2019 , the Compensation and Human Resources Committee of the Board of Directors approved the grant of 122,167 shares of restricted stock. Restricted stock awards vest in three equal annual installments commencing on the first anniversary of the grant date. Compensation cost for restricted stock awards is based on the closing price of our common stock on the date of grant and is recognized on a straight-line basis over the three -year vesting period. The following table summarizes information about restricted stock awards for 2019 : Shares Weighted Average Grant Date Fair Value Non-vested at January 1, 2019 198,776 $ 63.65 Granted 122,167 69.18 Vested (85,759 ) 59.76 Forfeited (31,713 ) 67.14 Non-vested at December 31, 2019 203,471 $ 68.06 The weighted average grant-date fair value of restricted stock awards and total fair value of restricted stock awards vested are summarized in the following table: For the Years Ended December 31, 2019 2018 2017 Weighted average grant-date fair value of restricted stock granted $ 69.18 $ 71.18 $ 63.64 Total fair value of restricted stock awards vested (in millions) $ 5.1 $ 5.5 $ 5.3 Employee Retirement Plan We sponsor the Asbury Automotive Retirement Savings Plan (the "Retirement Savings Plan"), a 401(k) plan, for eligible employees. Employees electing to participate in the Retirement Savings Plan may contribute up to 75% of their annual eligible compensation. IRS rules limited total participant contributions during 2019 to $18,500 , or $24,500 if age 50 or more. For non-highly compensated employees, after one year of employment we match 50% of employees' contributions up to 4% of their eligible compensation. Employer contributions vest on a graded basis over 4 years after the date of hire. Expenses from continuing operations related to employer matching contributions totaled $3.7 million , $3.2 million , and $3.0 million for the years ended December 31, 2019 , 2018 , and 2017 , respectively.

CONDENSED QUARTERLY REVENUES AN

CONDENSED QUARTERLY REVENUES AND EARNINGS (UNAUDITED)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
CONDENSED QUARTERLY REVENUES AND EARNINGS (UNAUDITED)	CONDENSED QUARTERLY REVENUES AND EARNINGS (UNAUDITED): For the Three Months Ended March 31, June 30, September 30, December 31, (In millions, except per share data) 2018: Revenues $ 1,609.2 $ 1,723.6 $ 1,757.4 $ 1,784.2 Gross profit $ 265.4 $ 277.8 $ 278.0 $ 281.8 Net income (2)(3)(4) $ 40.1 $ 43.2 $ 44.3 $ 40.4 Net income per common share: Basic (1)(2)(3)(4) $ 1.95 $ 2.13 $ 2.22 $ 2.09 Diluted (1)(2)(3)(4) $ 1.93 $ 2.11 $ 2.18 $ 2.06 2019: Revenues $ 1,670.8 $ 1,803.5 $ 1,842.0 $ 1,894.0 Gross profit $ 279.2 $ 295.0 $ 293.1 $ 301.6 Net income (5)(6)(7) $ 40.9 $ 54.9 $ 45.0 $ 43.6 Net income per common share: Basic (1)(5)(6)(7) $ 2.13 $ 2.87 $ 2.36 $ 2.28 Diluted (1)(5)(6)(7) $ 2.11 $ 2.84 $ 2.33 $ 2.26 ____________________________ (1) The sum of income per common share for the four quarters does not equal total income per common share due to changes in the average number of shares outstanding during the respective periods. (2) Results for the three months ended June 30, 2018 were increased by $0.5 million as a result of gains from legal settlements, net of tax, or $0.03 per basic and diluted share. (3) Results for the three months ended September 30, 2018 were decreased by $0.6 million as a result of an adjustment to the deferred tax asset related to certain components of share-based compensation, net of tax, or $0.03 per basic and diluted share. (4) Results for the three months ended December 31, 2018 were decreased by a $2.8 million franchise rights impairment, net of tax, or $0.14 per basic and diluted share, respectively, in the aggregate. (5) Results for the three months ended March 30, 2019 were decreased by $1.8 million as a result of fixed assets write-off, net of tax, or $0.09 per basic and diluted share. (6) Results for the three months ended June 30, 2019 were increased by $9.0 million as a result of a gain on a divested dealership and real estate, net of tax, or $0.46 per basic and diluted share. (7) Results for the three months ended December 31, 2019 were decreased by $5.3 million franchise rights impairment, net of tax, or $0.27 per basic and diluted share.

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	12 Months Ended
	Dec. 31, 2019
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS Park Place Acquisition On December 11, 2019, we entered into an Asset Purchase Agreement and a Real Estate Purchase Agreement with certain members of the Park Place Dealership family of entities, to acquire substantially all of the assets of, and certain real property related to the businesses described in the Asset Purchase Agreement for a purchase price of approximately $1.0 billion (excluding vehicle inventory), reflecting $785.0 million of goodwill, approximately $215.0 million for real estate and leaseholds and approximately $30 million for parts and fixed assets (the "Acquisition"). This Acquisition is expected to close during the first quarter of 2020. Park Place, based in Dallas, Texas, is one of the country's largest luxury dealer groups, with an attractive portfolio of high volume, award-winning, luxury dealerships and high-quality real estate. Park Place consists of a collection of: • ten luxury dealerships, including one dealership scheduled to open in the first quarter of 2020; • an auto auction business for wholesaling used cars; and • a subscription service platform that offers customers access to a range of luxury vehicles for a monthly fee. New Senior Notes On February 19, 2020, the Company completed its offering of senior unsecured notes, consisting of $525.0 million aggregate principal amount of 4.50% Senior Notes due 2028 (the “2028 Notes”) and $600.0 million aggregate principal amount of 4.75% Senior Notes due 2030 (the “2030 Notes” and, together with the 2028 Notes, the “Notes”). The 2028 Notes and 2030 Notes mature on March 1, 2028 and March 1, 2030, respectively. Interest is payable semiannually, on March 1 and September 1 of each year. The New Senior Notes were offered, together with additional borrowings and cash on hand, to (i) fund, if consummated, the acquisition of substantially all of the assets of Park Place, (ii) redeem all of our outstanding $600.0 million aggregate principal amount of the 6.0% Notes and (iii) pay fees and expenses in connection with the foregoing. New BofA Real Estate Facility In connection with the Acquisition, on February 7, 2020 we entered into the New BofA Real Estate Facility, which will provide for term loans in an aggregate amount not to exceed $280.6 million , and is expected to mature seven years from the initial funding of the facility. Borrowings under the New BofA Real Estate Facility are expected to be guaranteed by us and each of our operating dealership subsidiaries that own or lease the real estate being financed under the New BofA Real Estate Facility, and are expected to be collateralized by first priority liens, subject to certain permitted exceptions, on all of the real property financed thereunder. In connection with the Acquisition, we intend to borrow $216.6 million under the New BofA Real Estate Facility, and have the ability to make a single draw of an additional amount up to 80% of the appraised value of the property expected to be acquired at or after the consummation of the Acquisition. Amendments to 2019 Senior Credit Facility In connection with the Acquisition, we have obtained amendments, among other things, to (1) increase the aggregate commitments under the Revolving Credit Facility to $350.0 million , (2) increase the aggregate commitments under the New Vehicle Floorplan Facility to $1.35 billion and (3) increase the aggregate commitments under the Used Vehicle Floorplan Facility to $200.0 million . These amendments to increase the aggregate commitments will become effective concurrently with the consummation of the Acquisition. In connection with the consummation of the Acquisition, we intend to borrow approximately $387 million under the 2019 Senior Credit Facility with respect to existing Park Place vehicle inventory, consisting of approximately $237 million under the New Vehicle Floor Plan Facility and approximately $150 million under the Used Vehicle Floor Plan Facility. Conditional Redemption Notice for Existing Notes On February 3, 2020, we issued a conditional notice of redemption to the holders of our 6% Notes, notifying such holders that we intend to redeem all of the 6% Notes on March 4, 2020. The redemption of the 6% Notes is conditioned upon the consummation of the Acquisition. If redeemed, the 6% Notes will be redeemed at 103% of par, plus accrued and unpaid interest to, but excluding, the date of redemption. We will pay a redemption premium in connection with the redemption of the 6% Notes of $18.0 million . Other In January 2020, we closed on the acquisition of a dealership (comprising three franchises) in the Denver, Colorado market which increases the number of dealerships and franchises in that market to two and four, respectively.

DESCRIPTION OF BUSINESS AND S_2

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"), and reflect the consolidated accounts of Asbury Automotive Group, Inc. and our wholly owned subsidiaries. All intercompany transactions have been eliminated in consolidation. If necessary, reclassifications of amounts previously reported have been made to the accompanying Consolidated Financial Statements in order to conform to current presentation.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities as of the date of the financial statements, and the reported amounts of revenues and expenses during the periods presented. Actual results could differ materially from these estimates. Estimates and assumptions are reviewed quarterly, and the effects of any revisions are reflected in the consolidated financial statements in the period they are determined to be necessary. Significant estimates made in the accompanying Consolidated Financial Statements include, but are not limited to, those relating to inventory valuation reserves, reserves for chargebacks against revenue recognized from the sale of finance and insurance products, reserves for insurance programs, certain assumptions related to intangible and long-lived assets, and reserves for certain legal or similar proceedings relating to our business operations.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include investments in money market accounts and short-term certificates of deposit, which have maturity dates of less than 90 days when purchased.
Contracts-In-Transit	Contracts-In-Transit Contracts-in-transit represent receivables from third-party finance companies for the portion of new and used vehicle purchase price financed by customers through sources arranged by us.
Inventories	Inventories Inventories are stated at the lower of cost and net realizable value. We use the specific identification method to value vehicle inventories and the "first-in, first-out" method ("FIFO") to account for our parts inventories. Our new vehicle sales histories have indicated that the vast majority of the new vehicles we sell are sold for, or in excess of, our cost to purchase those vehicles. Therefore, we generally do not maintain a reserve for new vehicle inventory. We maintain a reserve for used vehicle inventory where cost basis exceeds net realizable value. In assessing lower of cost and net realizable value for used vehicles, we consider (i) the aging of our used vehicles, (ii) historical sales experience of used vehicles, and (iii) current market conditions and trends in used vehicle sales. We also review and consider the following metrics related to used vehicle sales (both on a recent and longer-term historical basis): (i) days of supply in our used vehicle inventory, (ii) used vehicle units sold at less than original cost as a percentage of total used vehicles sold, and (iii) average vehicle selling price of used vehicle units sold at less than original cost. We then determine the appropriate level of reserve required to reduce our used vehicle inventory to the lower of cost and net realizable value, and record the resulting adjustment in the period in which we determine a loss has occurred. The level of reserve determined to be appropriate for each reporting period is considered to be a permanent inventory write-down, and therefore is only released upon the sale of the related inventory. We receive assistance from certain automobile manufacturers in the form of advertising and floor plan interest credits. Manufacturer advertising credits that are reimbursements of costs associated with specific advertising programs are recognized as a reduction of advertising expense in the period they are earned. All other manufacturer advertising and floor plan interest credits are accounted for as purchase discounts, and are recorded as a reduction of inventory and recognized as a reduction to New vehicle cost of sales in the accompanying Consolidated Statements of Income in the period the related vehicle is sold.
Property and Equipment	Property and Equipment Property and equipment are recorded at cost and depreciated using the straight-line method over their estimated useful lives. Depreciation is included in Depreciation and amortization on the accompanying Consolidated Statements of Income. Leasehold improvements are capitalized and amortized over the lesser of the remaining lease term or the useful life of the related asset. The ranges of estimated useful lives are as follows (in years): Buildings and improvements 10-40 Machinery and equipment 5-10 Furniture and fixtures 3-10 Company vehicles 3-5 Expenditures for major additions or improvements, which extend the useful lives of assets, are capitalized. Minor replacements, maintenance and repairs, which do not improve or extend the lives of such assets, are expensed as incurred. We capitalize interest on borrowings during the active construction period of capital projects. Capitalized interest is added to the cost of the assets and is depreciated over the estimated useful lives of the assets. We review property and equipment for impairment whenever events or changes in circumstances indicate the carrying value may not be recoverable. When we test our long-lived assets for impairment, we first compare the carrying amount of the underlying assets to their net recoverable value by reviewing the undiscounted cash flows expected from the use and eventual disposition of the underlying assets. If the carrying amount of the underlying assets is less than their net recoverable value, then we calculate an impairment equal to the excess of the carrying amount over the fair market value, and the impairment loss would be charged to operations in the period identified. We did not record an impairment of our property and equipment in 2019 , 2018 , and 2017
Acquisitions	Acquisitions Acquisitions are accounted for under the acquisition method of accounting and the assets acquired and liabilities assumed are recorded at their fair value at the acquisition date. The results of operations of acquired dealerships are included in the accompanying Consolidated Statements of Income, commencing on the date of acquisition.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill represents the excess cost of an acquired business over the estimated fair market value of its identifiable net assets. We have determined that, based on how we integrate acquisitions into our business, how the components of our business share resources and interact with one another, and how we review the results of our operations, that we have several geographic market-based operating segments. We have determined that the dealerships in each of our operating segments are components that are aggregated into several geographic market-based reporting units for the purpose of testing goodwill for impairment, as they (i) have similar economic characteristics, (ii) offer similar products and services (all of our dealerships offer new and used vehicles, service, parts and third-party finance and insurance products), (iii) have similar customers, (iv) have similar distribution and marketing practices (all of our dealerships distribute products and services through dealership facilities that market to customers in similar ways), and (v) operate under similar regulatory environments. Our only significant identifiable intangible assets, other than goodwill, are our rights under franchise agreements with manufacturers, which are recorded at an individual franchise level. The fair value of our manufacturer franchise rights are determined at the acquisition date, by discounting the projected cash flows specific to each franchise. We have determined that manufacturer franchise rights have an indefinite life, as there are no economic, contractual or other factors that limit their useful lives, and they are expected to generate cash flows indefinitely due to the historically long lives of the manufacturers' brand names. Furthermore, to the extent that any agreements evidencing our manufacturer franchise rights would expire, we expect that we would be able to renew those agreements in the ordinary course of business. Goodwill and manufacturer franchise rights are deemed to have indefinite lives and therefore are not subject to amortization. We review goodwill and manufacturer franchise rights for impairment annually as of October 1 st , or more often if events or circumstances indicate that impairment may have occurred. We are subject to financial statement risk to the extent that goodwill becomes impaired due to decreases in the fair value of our automotive retail business or manufacturer franchise rights become impaired due to decreases in the fair value of our individual franchises.
Debt Issuance Costs	Debt Issuance Costs Debt issuance costs are presented as a contra-liability within Current maturities of long-term debt or Long-term debt on our Consolidated Balance Sheets, except for debt issuance costs associated with our line-of-credit arrangements, which are presented as an asset within Other current assets or Other long-term assets on our Consolidated Balance Sheets. Debt issuance costs are amortized to Floor plan interest expense and Other interest expense, net in the accompanying Consolidated Statements of Income through maturity using the effective interest method or the straight-line method for our line-of-credit arrangements.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities From time to time, we utilize derivative financial instruments to manage our interest rate risk. The types of risks hedged are those relating to the variability of cash flows caused by fluctuations in interest rates. We document our risk management strategy and assess hedge effectiveness at each interest rate swaps inception and during the term of each hedge. Derivatives are reported at fair value on the accompanying Consolidated Balance Sheets. The unrealized gain or losses on our hedges is reported as a component of Accumulated Other Comprehensive Loss on the accompanying Consolidated Balance Sheets, and reclassified to Other interest expense, net in the accompanying Consolidated Statements of Income in the period during which the hedged transaction affects earnings.
Insurance	Insurance We are self-insured for employee medical claims and maintain stop-loss insurance for large-dollar individual claims. We have high deductible insurance programs for workers compensation, property and general liability claims. We maintain and review our claim and loss history to assist in assessing our expected future liability for these claims. We also use professional service providers, such as account administrators and actuaries, to help us accumulate and assess this information. Provisions for retained losses and deductibles are made by charges to expense based upon periodic evaluations of the estimated ultimate liabilities on reported and unreported claims.
Internal Profit	Internal Profit Revenues and expenses associated with internal work performed by our parts and service departments on new and used vehicle inventory are eliminated in consolidation. The gross profit earned by our parts and service departments for internal work performed is included as a reduction of Parts and service cost of sales on the accompanying Consolidated Statements of Income upon the sale of the vehicle. The costs incurred by our new and used vehicle departments for work performed by our parts and service departments is included in either New vehicle cost of sales or Used vehicle cost of sales on the accompanying Consolidated Statements of Income, depending on the classification of the vehicle serviced. We eliminate the internal profit on vehicles that remain in inventory.
Share-based Compensation	Share-Based Compensation We record share-based compensation expense under the fair value method on a straight-line basis over the vesting period, unless the awards are subject to performance conditions, in which case we recognize the expense over the requisite service period of each separate vesting tranche. In addition, we account for the forfeiture of share-based awards as they occur.
Share Repurchase	Share Repurchases Share repurchases may be made from time-to-time in open market transactions or through privately negotiated transactions under the authorization approved by the Board of Directors. Periodically, the Company may retire repurchased shares of common stock previously held by the Company as treasury stock. In accordance with our accounting policy, we allocate any excess share repurchase price over par value between additional paid-in capital, which is limited to amounts initially recorded for the same issue, and retained earnings. During the year ended December 31, 2019 , the Company retired 202,379 shares of its common stock repurchased pursuant to the Repurchase Program ("Retired Shares") and previously held by the Company as Treasury Shares in the amount of $15.3 million .
Earnings per Common Share	Earnings per Common Share Basic earnings per common share is computed by dividing net income by the weighted-average common shares outstanding during the period. Diluted earnings per common share is computed by dividing net income by the weighted-average common shares and common share equivalents outstanding during the period. For all periods presented, there were no adjustments to the numerator necessary to compute diluted earnings per share.
Advertising	Advertising We expense costs of advertising as incurred and production costs when the advertising initially takes place, net of certain advertising credits and other discounts received from certain automobile manufacturers. Advertising expense from continuing operations totaled $34.4 million , $30.6 million and $30.3 million for the years ended December 31, 2019 , 2018 and 2017 , which was net of earned advertising credits of $21.1 million , $21.0 million , and $18.0 million , respectively, and is included in Selling, general, and administrative expense in the accompanying Consolidated Statements of Income.
Income Taxes	Income Taxes We use the liability method to account for income taxes. Under this method, deferred tax assets and liabilities are recognized for the expected future tax consequences of differences between the carrying amounts of assets and liabilities and their respective tax basis using currently enacted tax rates. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period when the change is enacted. Deferred tax assets are reduced by a valuation allowance when it is more likely than not that some portion or all the deferred tax assets will not be realized. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Act. The Tax Act makes broad and complex changes to the U.S. tax code, including, but not limited to, a reduction in the U.S. federal corporate income tax rate from 35% to 21%. In 2017, we remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21%. The provisional amount recorded related to the remeasurement of our deferred tax balance resulted in a $7.9 million reduction to our net deferred tax liability as of December 31, 2017. The staff of the U.S. Securities and Exchange Commission issued Staff Accounting Bulletin No. 118 ("SAB 118") on December 22, 2017, which provided guidance on accounting for the income tax effects of the Tax Act. SAB 118 provides a measurement period that should not extend beyond one year from December 22, 2017, the Tax Act enactment date, for companies to complete the accounting under ASC 740, Income Taxes ("ASC 740"). In accordance with SAB 118, a company must reflect the income tax effects of those aspects of the Tax Act for which the accounting under ASC 740 is complete. During the third quarter of 2018, the IRS released Notice 2018-68, which clarified a number of changes made to Section 162(m) of the Code by the Tax Act. As a result of this new guidance, we recorded $0.6 million of additional income tax expense related to an adjustment to the deferred tax asset for certain components of share-based compensation. After considering the additional guidance issued by the U.S. Treasury Department, state tax authorities and other standard-setting bodies we have completed our accounting for the Tax Act.
Assets Held for Sale and Liabilities Associated with Assets Held for Sale	Assets Held for Sale and Liabilities Associated with Assets Held for Sale Certain amounts have been classified as Assets held for sale as of December 31, 2019 and 2018 in the accompanying Consolidated Balance Sheets. Assets and liabilities classified as held for sale include assets and liabilities associated with pending dealership disposals, real estate we are actively marketing to sell, and any related mortgage notes payable or other liabilities, if applicable. Classification as held for sale begins on the date that we have met all of the criteria for classification as held for sale. At the time of classifying assets as held for sale, we compare the carrying value of these assets to estimates of fair value to assess for impairment. We compare the carrying value to estimates of fair value utilizing the assistance of third-party broker opinions of value and third-party desktop appraisals to assist in our fair value estimates related to real estate properties.
Statements of Cash Flows	Statements of Cash Flows Borrowings and repayments of floor plan notes payable to a lender unaffiliated with the manufacturer from which we purchase a particular new vehicle ("Non-Trade") and all floor plan notes payable relating to pre-owned vehicles (together referred to as "Floor Plan Notes Payable—Non-Trade"), are classified as financing activities on the accompanying Consolidated Statements of Cash Flows, with borrowings reflected separately from repayments. The net change in floor plan notes payable to a lender affiliated with the manufacturer from which we purchase a particular new vehicle (collectively referred to as "Floor Plan Notes Payable—Trade") is classified as an operating activity on the accompanying Consolidated Statements of Cash Flows. Borrowings of floor plan notes payable associated with inventory acquired in connection with all acquisitions and repayments made in connection with all divestitures are classified as a financing activity in the accompanying Consolidated Statement of Cash Flows. Cash flows related to floor plan notes payable included in operating activities differ from cash flows related to floor plan notes payable included in financing activities only to the extent that the former are payable to a lender affiliated with the manufacturer from which we purchased the related inventory, while the latter are payable to a lender not affiliated with the manufacturer from which we purchased the related inventory. Loaner vehicles account for a significant portion of Other current assets. We acquire loaner vehicles either with available cash or through borrowings from either our manufacturer affiliated lenders or through our senior secured credit agreement with Bank of America, as administrative agent, and the other agents and lenders party thereto (as amended, the "2019 Senior Credit Facility"). Loaner vehicles are initially used by our service department for only a short period of time (typically 6 to 12 months) before we seek to sell them. Therefore, we classify the acquisition of loaner vehicles in Other current assets and the borrowings and repayments of loaner vehicle notes payable in Accounts payable and accrued liabilities in the accompanying Consolidated Statements of Cash Flows. Loaner vehicles are depreciated over the service period to their estimated value. At the end of the loaner service period, loaner vehicles are transferred from Other current assets to used vehicle inventory. These transfers are reflected as non-cash transfers between Other current Assets and Inventory in the accompanying Consolidated Statements of Cash Flows.
Business and Credit Concentration Risk	Business and Credit Concentration Risk Financial instruments, which potentially subject us to a concentration of credit risk, consist principally of cash deposits. We maintain cash balances at financial institutions with strong credit ratings. Generally, amounts maintained with these financial institutions are in excess of FDIC insurance limits. We have substantial debt service obligations. As of December 31, 2019 , we had total debt of $943.3 million , which excluded both $28.1 million mortgage notes payable classified as Liabilities associated with assets held for sale and floor plan notes payable, the debt premium on the 6.0% Senior Subordinated Notes due 2024 (" 6.0% Notes"), and debt issuance costs. In addition, we and our subsidiaries have the ability to obtain additional debt from time to time to finance acquisitions, real property purchases, capital expenditures, share repurchases or for other purposes, although such borrowings are subject to the restrictions contained in the third amended and restated senior secured credit agreement with Bank of America, N.A. ("Bank of America"), as administrative agent, and the other lenders party thereto (the "2019 Senior Credit Facility"), the indenture governing our 6.0% Senior Subordinated Notes due 2024 (the "Indenture"), and our other debt instruments. We will have substantial debt service obligations, consisting of required cash payments of principal and interest, for the foreseeable future. We are subject to operating and financial restrictions and covenants in certain of our leases and in our debt instruments, including the 2019 Senior Credit Facility, the Indentures, and the credit agreements covering our mortgage obligations. These agreements contain restrictions on, among other things, our ability to incur additional indebtedness, to create liens or other encumbrances, and to make certain payments (including dividends and repurchases of our shares and investments). These agreements may also require us to maintain compliance with certain financial and other ratios. Our failure to comply with any of these covenants in the future would constitute a default under the relevant agreement, which would, depending on the relevant agreement, (i) entitle the creditors under such agreement to terminate our ability to borrow under the relevant agreement and accelerate our obligations to repay outstanding borrowings; (ii) require us to apply our available cash to repay these borrowings; (iii) entitle the creditors under such agreement to foreclose on the property securing the relevant indebtedness; and/or (iv) prevent us from making debt service payments on certain of our other indebtedness, any of which would have a material adverse effect on our business, financial condition or results of operations. In many cases, a default under one of our debt or mortgage, agreements could trigger cross-default provisions in one or more of our other debt or mortgages. A number of our dealerships are located on properties that we lease. Each of the leases governing such properties has certain covenants with which we must comply. If we fail to comply with the covenants under our leases, the respective landlords could terminate the leases and seek damages from us. Concentrations of credit risk with respect to contracts-in-transit and accounts receivable are limited primarily to automotive manufacturers and financial institutions. Credit risk arising from receivables from commercial customers is minimal due to the large number of customers comprising our customer base. A significant portion of our new vehicle sales are derived from a limited number of automotive manufacturers. For the year ended December 31, 2019 , manufacturers representing 5% or more of our revenues from new vehicle sales were as follows: Manufacturer (Vehicle Brands): % of Total New Vehicle Revenues American Honda Motor Co., Inc. (Honda and Acura) 22 % Toyota Motor Sales, U.S.A., Inc. (Toyota and Lexus) 20 % Nissan North America, Inc. (Nissan and Infiniti) 11 % Ford Motor Company (Ford and Lincoln) 10 % Mercedes-Benz USA, LLC ( Mercedes-Benz, smart and Sprinter ) 7 % BMW of North America, LLC (BMW and Mini) 6 % No other manufacturers individually accounted for more than 5% of our total new vehicle revenue for the year ended December 31, 2019 .
Segment Reporting	Segment Reporting Our operations are organized by management into geographic market-based dealership groups. Our Chief Operating Decision Maker is our Chief Executive Officer who manages the business, regularly reviews financial information and allocates resources at the geographic market level. The geographic operating segments have been aggregated into one reportable segment as their operations (i) have similar economic characteristics (our markets all have similar long-term average gross margins), (ii) offer similar products and services (all of our markets offer new and used vehicles, parts and service, and third-party finance and insurance products), (iii) have similar customers, (iv) have similar distribution and marketing practices (all of our markets distribute products and services through dealership facilities that market to customers in similar ways), and (v) operate under similar regulatory environments.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Effective January 1, 2019, the Company adopted the new lease accounting guidance in Accounting Standards Update (ASU) No. 2016-02, Leases (Topic 842) (“ASC 842”). For additional information, please refer to Note 18 "Leases" within the accompanying Notes to Consolidated Financial Statements for additional information. Effective January 1, 2019, the Company adopted ASU No. 2018-02, "Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("ASU 2018-02")." ASU 2018-02 allows entities to elect to reclassify the income tax effects resulting from the Tax Cuts and Jobs Act on items within accumulated other comprehensive income to retained earnings. The Company elected to reclassify $0.2 million related to the change in deferred taxes associated with our cash flow hedges from accumulated other comprehensive income to retained earnings. This reclassification was recognized as a cumulative effect adjustment in the Consolidated Statements of Shareholders' Equity. On January 1, 2019, the Company adopted ASU No. 2017-12, "Derivatives and Hedging" (Topic 815): Targeted Improvements to Accounting for Hedging Activities ("ASU 2017-12"). This update is intended to simplify hedge accounting by better aligning how an entity's risk management activities and hedging relationships are presented in its financial statements and simplifies the application of hedge accounting guidance in certain situations. This update expands and refines hedge accounting for both non-financial and financial risk components and aligns the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. For cash flow hedges existing at the adoption date, this update required adoption on a modified retrospective basis with a cumulative-effect adjustment to retained earnings as of the effective date and the amendments to presentation guidance and disclosure requirements are required to be adopted prospectively. The adoption of this update did not have a material impact on our Consolidated Financial Statements. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments- Credit Losses (Topic 326) Measurement of Credit Losses on Financial Instruments ("ASU 2016-13"), which requires an entity to assess impairment of its financial instruments based on its estimate of expected credit losses versus the current incurred loss model. The provisions of ASU 2016-13 are effective for fiscal years beginning after December 15, 2019. Entities are required to apply these changes through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. We are in the process of finalizing our evaluation of the impact from the adoption of the provisions this ASU will have on our Consolidated Financial Statements; however, do not expect the impact from the adoption to be material.
Revenue Recognition	The Company satisfies performance obligations either over time or at a point in time as discussed in further detail below. Revenue is recognized at the time the related performance obligation is satisfied by transferring a promised good or performing a service to a customer. Sales and other taxes we collect concurrent with revenue-producing activities are excluded from revenue.

DESCRIPTION OF BUSINESS AND S_3

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Schedule of Estimated Useful Lives	The ranges of estimated useful lives are as follows (in years): Buildings and improvements 10-40 Machinery and equipment 5-10 Furniture and fixtures 3-10 Company vehicles 3-5 Property and equipment, net consisted of the following: As of December 31, 2019 2018 (In millions) Land $ 343.8 $ 330.4 Buildings and leasehold improvements 622.9 617.5 Machinery and equipment 99.8 94.8 Furniture and fixtures 63.9 62.2 Company vehicles 8.1 8.8 Construction in progress 42.4 30.1 Gross property and equipment 1,180.9 1,143.8 Less—Accumulated depreciation (271.2 ) (257.7 ) Property and equipment, net (a) $ 909.7 $ 886.1 ______________________________ (a) Amounts reflected for Property and equipment, net as of December 31, 2019 and 2018, excluded $69.0 million and $26.3 million , respectively classified as Assets held for sale. In addition, Property and equipment, net as of December 31, 2019 and 2018 included finance and capital leases of $14.6 million and $2.3 million , respectively.
Schedule of Revenue by Major Brand	For the year ended December 31, 2019 , manufacturers representing 5% or more of our revenues from new vehicle sales were as follows: Manufacturer (Vehicle Brands): % of Total New Vehicle Revenues American Honda Motor Co., Inc. (Honda and Acura) 22 % Toyota Motor Sales, U.S.A., Inc. (Toyota and Lexus) 20 % Nissan North America, Inc. (Nissan and Infiniti) 11 % Ford Motor Company (Ford and Lincoln) 10 % Mercedes-Benz USA, LLC ( Mercedes-Benz, smart and Sprinter ) 7 % BMW of North America, LLC (BMW and Mini) 6 %

REVENUE RECOGNITION (Tables)

REVENUE RECOGNITION (Tables)	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	Revenue from contracts with customers consists of the following: For the year ended December 31, 2019 2018 Revenue: New vehicle $ 3,863.3 $ 3,788.7 Used vehicle retail 1,941.3 1,783.3 Used vehicle wholesale 190.3 189.1 New and used vehicle 5,994.9 5,761.1 Sale of vehicle parts and accessories 148.8 139.2 Vehicle repair and maintenance services 750.6 681.8 Parts and services 899.4 821.0 Finance and insurance, net 316.0 292.3 Total revenue $ 7,210.3 $ 6,874.4
Schedule of Contract with Customer, Assets	Changes in contract assets during the period are reflected in the table below. Contract assets related to vehicle repair and maintenance services are transferred to receivables when a repair order is completed and invoiced to the customer. Vehicle Repair and Maintenance Services Finance and Insurance, net Total (In millions) Contract Assets (Current), January 1, 2019 $ 4.1 $ 10.6 $ 14.7 Transferred to receivables from contract assets recognized at the beginning of the period (4.1 ) (3.3 ) (7.4 ) Increases related to revenue recognized, inclusive of adjustments to constraint, during the period 4.4 3.3 7.7 Contract Assets (Current), March 31, 2019 4.4 10.6 15.0 Transferred to receivables from contract assets recognized at the beginning of the period (4.4 ) (3.2 ) (7.6 ) Increases related to revenue recognized, inclusive of adjustments to constraint, during the period 4.8 4.6 9.4 Contract Assets (Current), June 30, 2019 4.8 12.0 16.8 Transferred to receivables from contract assets recognized at the beginning of the period (4.8 ) (2.6 ) (7.4 ) Increases related to revenue recognized, inclusive of adjustments to constraint, during the period 4.9 2.1 7.0 Contract Assets (Current), September 30, 2019 4.9 11.5 16.4 Transferred to receivables from contract assets recognized at the beginning of the period $ (4.9 ) $ (3.9 ) $ (8.8 ) Increases related to revenue recognized, inclusive of adjustments to constraint, during the period $ 4.8 $ 4.7 $ 9.5 Contract Assets (Current), December 31, 2019 $ 4.8 $ 12.3 $ 17.1

ACQUISITIONS AND DIVESTITURES (

ACQUISITIONS AND DIVESTITURES (Tables)	12 Months Ended
	Dec. 31, 2019
Business Combinations and Divestitures [Abstract]
Schedule of Business Acquisitions	Below is the allocation of purchase price for the acquisitions for the years ended December 31, 2019 and 2018. Goodwill and manufacturer franchise rights associated with our acquisitions will be deductible for federal and state income tax purposes ratably over a 15 -year period. For the Year Ended December 31, 2019 2018 (In millions) Inventory $ 70.9 $ 27.3 Real estate 43.1 23.5 Property and equipment 4.5 0.6 Goodwill 25.9 20.4 Manufacturer franchise rights 65.3 19.9 Loaner vehicles 1.5 1.7 Liabilities assumed (0.8 ) $ (0.2 ) Total purchase price $ 210.4 $ 93.2

ACCOUNTS RECEIVABLE ACCOUNTS RE

ACCOUNTS RECEIVABLE ACCOUNTS RECEIVABLE (Tables)	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Schedule of Accounts Receivable	Accounts receivable consisted of the following: As of December 31, 2019 2018 (In millions) Vehicle receivables $ 44.8 $ 45.7 Manufacturer receivables 50.4 51.2 Other receivables 42.4 34.7 Total accounts receivable 137.6 131.6 Less—Allowance for doubtful accounts (1.4 ) (1.3 ) Accounts receivable, net $ 136.2 $ 130.3

INVENTORIES (Tables)

INVENTORIES (Tables)	12 Months Ended
	Dec. 31, 2019
Inventory Disclosure [Abstract]
Schedule of Inventory	Inventories consisted of the following: As of December 31, 2019 2018 (In millions) New vehicles $ 802.6 $ 867.2 Used vehicles 140.1 158.9 Parts and accessories 42.3 41.5 Total inventories $ 985.0 $ 1,067.6

ASSETS HELD FOR SALE (Tables)

ASSETS HELD FOR SALE (Tables)	12 Months Ended
	Dec. 31, 2019
Discontinued Operations and Disposal Groups [Abstract]
Summary of Assets Held for Sale and Liabilities Associated with Assets Held for Sale	A summary of assets held for sale and liabilities associated with assets held for sale is as follows: As of December 31, 2019 2018 Assets: Inventory $ 67.7 $ — Loaners, net 3.0 — Property and equipment, net 69.0 26.3 Operating lease right-of-use assets 6.9 — Goodwill 5.3 — Franchise rights 2.3 — Total Assets held for sale 154.2 26.3 Liabilities: Floor plan notes payable—trade 21.9 — Floor plan notes payable—non-trade 40.9 — Loaners/ Notes payable 3.1 — Current maturities of long-term debt 0.3 — Current maturities of operating leases 4.2 — Long-term debt 27.8 — Operating lease liabilities 2.7 — Total Liabilities associated with assets held for sale 100.9 — Net assets held for sale $ 53.3 $ 26.3

OTHER CURRENT ASSETS (Tables)

OTHER CURRENT ASSETS (Tables)	12 Months Ended
	Dec. 31, 2019
Other Assets [Abstract]
Schedule of Other Current Assets	Other current assets consisted of the following: As of December 31, 2019 2018 (In millions) Loaner vehicles $ 83.8 $ 87.0 Contract assets (see Note 2) 17.1 14.7 Deposits 11.0 0.6 Prepaid expenses 5.8 5.9 Prepaid taxes 4.7 9.1 Other 6.6 4.9 Other current assets $ 129.0 $ 122.2

PROPERTY AND EQUIPMENT, NET (Ta

PROPERTY AND EQUIPMENT, NET (Tables)	12 Months Ended
	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	The ranges of estimated useful lives are as follows (in years): Buildings and improvements 10-40 Machinery and equipment 5-10 Furniture and fixtures 3-10 Company vehicles 3-5 Property and equipment, net consisted of the following: As of December 31, 2019 2018 (In millions) Land $ 343.8 $ 330.4 Buildings and leasehold improvements 622.9 617.5 Machinery and equipment 99.8 94.8 Furniture and fixtures 63.9 62.2 Company vehicles 8.1 8.8 Construction in progress 42.4 30.1 Gross property and equipment 1,180.9 1,143.8 Less—Accumulated depreciation (271.2 ) (257.7 ) Property and equipment, net (a) $ 909.7 $ 886.1 ______________________________ (a) Amounts reflected for Property and equipment, net as of December 31, 2019 and 2018, excluded $69.0 million and $26.3 million , respectively classified as Assets held for sale. In addition, Property and equipment, net as of December 31, 2019 and 2018 included finance and capital leases of $14.6 million and $2.3 million , respectively.

GOODWILL AND INTANGIBLE FRANC_2

GOODWILL AND INTANGIBLE FRANCHISE RIGHTS (Tables)	12 Months Ended
	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill and Intangibles	The changes in goodwill and intangible franchise rights for the years ended December 31, 2019 and 2018 are as follows: Goodwill (In millions) Balance as of December 31, 2017 (a) $ 160.8 Acquisitions 20.4 Balance as of December 31, 2018 (a) 181.2 Acquisitions 25.9 Divestitures (0.1 ) Reclassified to assets held for sale (5.3 ) Balance as of December 31, 2019 (a) $ 201.7 _____________________________ (a) Net of accumulated impairment losses of $537.7 million recorded prior to the year ended December 31, 2017 . Intangible Franchise Rights (In millions) Balance as of December 31, 2017 $ 49.6 Acquisitions 19.9 Impairments (3.7 ) Balance as of December 31, 2018 $ 65.8 Acquisitions 65.3 Impairments (7.1 ) Reclassified to assets held for sale (2.3 ) Balance as of December 31, 2019 $ 121.7

FLOOR PLAN NOTES PAYABLE_TRADE

FLOOR PLAN NOTES PAYABLE—TRADE (Tables)	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Schedule of Floor Plan Notes Payable - Trade	Floor plan notes payable—trade, net consisted of the following: As of December 31, 2019 2018 (In millions) Floor plan notes payable—trade (a) $ 146.5 $ 125.3 Floor plan notes payable offset account (16.2 ) (11.3 ) Total floor plan notes payable—trade, net $ 130.3 $ 114.0 ____________________________ (a) Amounts reflected for floor plan notes payable—trade as of December 31, 2019, excluded $21.9 million classified as Liabilities associated with assets held for sale.

FLOOR PLAN NOTES PAYABLE_NON-_2

FLOOR PLAN NOTES PAYABLE—NON-TRADE (Tables)	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Schedule of Floor Plan Notes Payable - Non-Trade	Floor plan notes payable—non-trade, net consisted of the following: As of December 31, 2019 2018 (In millions) Floor plan notes payable—new non-trade $ 773.6 $ 843.0 Floor plan notes payable—used non-trade — 30.0 Floor plan notes payable offset account (115.9 ) (20.9 ) Total floor plan notes payable—non-trade, net $ 657.7 $ 852.1 ____________________________ (a) Amounts reflected for floor plan notes payable—new non-trade as of December 31, 2019, excluded $40.9 million classified as Liabilities associated with assets held for sale.

ACCOUNTS PAYABLE AND ACCRUED _2

ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2019
Payables and Accruals [Abstract]
Schedule of Accounts Payable and Accrued Liabilities	Accounts payable and accrued liabilities consisted of the following: As of December 31, 2019 2018 (In millions) Accounts payable $ 81.7 $ 81.9 Loaner vehicles notes payable (a) 83.9 87.5 Accrued compensation 30.5 27.6 Accrued finance and insurance chargebacks 22.9 23.0 Accrued insurance 25.3 20.9 Taxes payable 30.5 23.7 Accrued advertising 5.1 3.9 Accrued interest 6.0 6.6 Other 22.8 23.3 Accounts payable and accrued liabilities $ 308.7 $ 298.4 ____________________________ (a) Amounts reflected for Loaner vehicles notes payable as of December 31, 2019, excluded $3.1 million classified as Liabilities associated with assets held for sale.

LONG-TERM DEBT (Tables)

LONG-TERM DEBT (Tables)	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Schedule of Long-term Debt	Long-term debt consisted of the following: As of December 31, 2019 2018 (In millions) 6.0% Senior Subordinated Notes due 2024 $ 600.0 $ 600.0 Mortgage notes payable bearing interest at fixed rates (the weighted average interest rates were 5.3% and 5.2% for the years ended December 31, 2019 and 2018, respectively) 100.5 132.2 2018 BofA Real Estate Facility (a) 88.3 25.7 2018 Wells Fargo Master Loan Facility 25.0 25.0 2013 BofA Real Estate Facility 35.5 40.8 2015 Wells Fargo Master Loan Facility (b) 76.8 83.3 Finance lease liability 17.2 3.1 Total debt outstanding 943.3 910.1 Add—unamortized premium on 6.0% Senior Subordinated Notes due 2024 5.1 6.0 Less—debt issuance costs (9.0 ) (10.8 ) Long-term debt, including current portion 939.4 905.3 Less—current portion, net of debt issuance costs (32.4 ) (38.8 ) Long-term debt $ 907.0 $ 866.5 ____________________________ (a) Amounts reflected for the 2018 BofA Real Estate Facility as of December 31, 2019 , exclude $26.6 million classified as Liabilities associated with assets held for sale. (b) Amounts reflected for the 2015 Wells Fargo Master Loan Facility as of December 31, 2019 , exclude $1.5 million classified as Liabilities associated with assets held for sale.
Schedule of Aggregate Maturities	The aggregate maturities of long-term debt as of December 31, 2019 are as follows (in millions): 2020 $ 35.7 2021 35.0 2022 33.2 2023 53.2 2024 648.6 Thereafter 165.7 Total maturities of long-term debt $ 971.4
Schedule of Mortgage Notes Payable	Below is a summary of our outstanding mortgage notes payable, the carrying values of the related collateralized real estate, and years of maturity as of December 31, 2019 and 2018 : As of December 31, 2019 As of December 31, 2018 Mortgage Agreement Aggregate Principal Outstanding Carrying Value of Collateralized Related Real Estate Maturity Dates Aggregate Principal Outstanding Carrying Value of Collateralized Related Real Estate Maturity Dates Captive mortgages $ 80.8 $ 182.1 2020-2024 $ 111.6 $ 185.5 2019-2024 Other mortgage debt 19.7 43.9 2020-2022 20.6 43.3 2020-2022 2018 BofA Real Estate Facility (a) 88.3 123.6 2025 25.7 137.2 2025 2018 Wells Fargo Master Loan Facility 25.0 113.7 2028 25.0 114.3 2028 2013 BofA Real Estate Facility 35.5 74.6 2023 40.8 82.2 2023 2015 Wells Fargo Master Loan Facility (b) 76.8 120.6 2025 83.3 130.2 2025 Total mortgage debt $ 326.1 $ 658.5 $ 307.0 $ 692.7 ____________________________ (a) Amounts reflected for the 2018 BofA Real Estate Facility as of December 31, 2019 , exclude $26.6 million classified as Liabilities associated with assets held for sale. (b) Amounts reflected for the 2015 Wells Fargo Master Loan Facility as of December 31, 2019 , exclude $1.5 million classified as Liabilities associated with assets held for sale.

FINANCIAL INSTRUMENTS AND FAI_2

FINANCIAL INSTRUMENTS AND FAIR VALUE (Tables)	12 Months Ended
	Dec. 31, 2019
Derivatives and Fair Value [Abstract]
Schedule of Carrying Values and Fair Values of Liabilities	A summary of the carrying values and fair values of our 6.0% Notes and our mortgage notes payable is as follows: As of December 31, 2019 2018 (In millions) Carrying Value: 6.0% Senior Subordinated Notes due 2024 $ 598.8 $ 606.0 Mortgage notes payable (a) 323.4 307.0 Total carrying value $ 922.2 $ 913.0 Fair Value: 6.0% Senior Subordinated Notes due 2024 $ 619.5 $ 570.0 Mortgage notes payable (a) 364.2 306.7 Total fair value $ 983.7 $ 876.7 ____________________________ (a) Excludes amounts classified as Liabilities associated with assets held for sale.
Schedule of Derivative Instruments Fair Value	The following table provides information regarding the fair value of our interest rate swap agreements and the impact on the Consolidated Balance Sheets: As of December 31, 2019 2018 (In millions) Other current liabilities/(assets) $ 0.9 $ (0.2 ) Other long-term liabilities/(assets) 2.9 (0.4 ) Total fair value $ 3.8 $ (0.6 )
Schedule of Derivative Instruments Effect on Accumulated Other Comprehensive Income	Information about the effects of our interest rate swap agreements on the accompanying Consolidated Statements of Income and Consolidated Statements of Comprehensive Income, are as follows (in millions): For the Year Ended December 31, Results Recognized in Accumulated Other Comprehensive Loss (Effective Portion) Location of Results Reclassified from Accumulated Other Comprehensive Loss to Earnings Results Reclassified from Accumulated Other Comprehensive Loss to Earnings 2019 $ (4.4 ) Other interest expense, net $ — 2018 $ 1.8 Swap interest expense $ (0.5 ) 2017 $ (0.1 ) Swap interest expense $ (2.0 )

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense	The components of income tax expense from continuing operations are as follows: For the Years Ended December 31, 2019 2018 2017 (In millions) Current: Federal $ 46.3 $ 43.8 $ 59.1 State 8.0 7.1 8.3 Total current income tax expense 54.3 50.9 67.4 Deferred: Federal 5.5 3.9 1.2 State (0.3 ) 2.0 1.4 Total deferred income tax expense 5.2 5.9 2.6 Total income tax expense $ 59.5 $ 56.8 $ 70.0
Reconciliation of the Statutory Federal Rate to the Effective Rate	A reconciliation of the statutory federal rate to the effective tax rate from continuing operations is as follows (dollar amounts shown in millions) : For the Years Ended December 31, 2019 % 2018 % 2017 % Income tax provision at the statutory rate $ 51.2 21.0 $ 47.2 21.0 $ 73.2 35.0 State income tax expense, net of federal benefit 7.8 3.2 8.7 3.9 6.4 3.0 Non-deductible / non-tax items 0.6 0.2 0.4 0.2 (0.3 ) (0.1 ) Effect of enactment of tax reform — — 0.6 0.2 (7.9 ) (3.8 ) Adjustments and settlements — — — — (0.6 ) (0.3 ) Other, net (0.1 ) — (0.1 ) — (0.8 ) (0.3 ) Income tax expense $ 59.5 24.4 $ 56.8 25.3 $ 70.0 33.5
Schedule of Deferred Tax Assets and Liabilities	Deferred income tax asset and liability components consisted of the following: As of December 31, 2019 2018 (In millions) Deferred income tax assets: F&I chargeback liabilities $ 11.8 $ 11.0 Other accrued liabilities 2.1 3.2 Stock-based compensation 2.2 2.4 Operating lease right-of-use assets 18.7 — Other, net 9.0 3.9 Total deferred income tax assets 43.8 20.5 Deferred income tax liabilities: Intangible asset amortization (16.4 ) (12.5 ) Depreciation (33.4 ) (26.4 ) Operating lease liabilities (17.7 ) — Other, net (2.3 ) (3.3 ) Total deferred income tax liabilities (69.8 ) (42.2 ) Net deferred income tax liabilities $ (26.0 ) $ (21.7 )

OTHER LONG-TERM LIABILITIES (Ta

OTHER LONG-TERM LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2019
Other Liabilities Disclosure [Abstract]
Schedule of Other Long-Term Liabilities	Other long-term liabilities consisted of the following: As of December 31, 2019 2018 (In millions) Accrued finance and insurance chargebacks $ 22.9 $ 21.2 Deferred rent — 4.5 Interest rate swap 2.9 — Unclaimed property 2.9 3.3 Other 3.7 1.7 Other long-term liabilities $ 32.4 $ 30.7

SUPPLEMENTAL CASH FLOW INFORM_2

SUPPLEMENTAL CASH FLOW INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2019
Supplemental Cash Flow Information [Abstract]
Schedule of Cash Flow, Supplemental Disclosures	The following items are included in Other adjustments, net to reconcile net income to net cash provided by operating activities: For the Years Ended December 31, 2019 2018 2017 Amortization of debt issuance costs $ 2.5 $ 2.5 $ 3.2 Loss on disposal of fixed assets 2.6 0.9 2.1 Other individually immaterial items (0.3 ) (0.3 ) (1.0 ) Other adjustments, net $ 4.8 $ 3.1 $ 4.3 The following table presents supplemental cash flow information for leases during the year ended December 31, 2019 . For the Year Ended December 31, 2019 (In millions) Supplemental Cash Flow: Cash paid for amounts included in the measurements of lease liabilities Operating cash flows from finance lease $ 0.7 Operating cash flows from operating leases $ 23.7 Financing cash flows from finance lease $ 0.4 Right-of-use assets obtained in exchange for new finance lease liabilities $ 17.7 Right-of-use assets obtained in exchange for new operating lease liabilities $ 14.4 Changes to finance lease right-of-use asset resulting from lease reassessment event $ (3.1 )

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Assets And Liabilities, Lessee	Balance Sheet Presentation As of Leases Classification December 31, 2019 (In millions) Assets: Current Operating Operating lease right-of-use assets $ 65.6 Operating Assets held for sale 6.9 Non-Current Finance Property and equipment, net 14.6 Total right-of-use assets $ 87.1 Liabilities: Current Operating Current maturities of operating leases $ 17.0 Operating Liabilities held for sale 4.2 Finance Current maturities of long-term debt 0.6 Non-Current Operating Operating lease liabilities 52.6 Operating Liabilities held for sale 2.7 Finance Long-term debt 16.6 Total lease liabilities $ 93.7
Lease Term and Discount Rate, Lessee	Lease Term and Discount Rate As of December 31, 2019 Weighted Average Lease Term - Operating Leases 5.7 years Weighted Average Lease Term - Finance Lease 1.2 years Weighted Average Discount Rate - Operating Leases 4.7 % Weighted Average Discount Rate - Finance Lease 4.1 %
Lease, Cost	The following table provides certain information related to the lease costs for finance and operating leases during the year ended December 31, 2019 . For the Year Ended December 31, 2019 (In millions) Finance lease cost (Interest) $ 0.7 Operating lease cost 23.3 Short-term lease cost 2.7 Variable lease cost 1.0 $ 27.7
Schedule of Cash Flow, Supplemental Disclosures	The following items are included in Other adjustments, net to reconcile net income to net cash provided by operating activities: For the Years Ended December 31, 2019 2018 2017 Amortization of debt issuance costs $ 2.5 $ 2.5 $ 3.2 Loss on disposal of fixed assets 2.6 0.9 2.1 Other individually immaterial items (0.3 ) (0.3 ) (1.0 ) Other adjustments, net $ 4.8 $ 3.1 $ 4.3 The following table presents supplemental cash flow information for leases during the year ended December 31, 2019 . For the Year Ended December 31, 2019 (In millions) Supplemental Cash Flow: Cash paid for amounts included in the measurements of lease liabilities Operating cash flows from finance lease $ 0.7 Operating cash flows from operating leases $ 23.7 Financing cash flows from finance lease $ 0.4 Right-of-use assets obtained in exchange for new finance lease liabilities $ 17.7 Right-of-use assets obtained in exchange for new operating lease liabilities $ 14.4 Changes to finance lease right-of-use asset resulting from lease reassessment event $ (3.1 )
Lessee, Operating Lease, Liability, Maturity	The table below reconciles the undiscounted cash flows for each of the first five years and total of the remaining years to the finance lease liabilities and operating lease liabilities as of December 31, 2019 . Finance Operating (In millions) 2020 $ 1.3 $ 24.2 2021 16.8 21.1 2022 — 15.7 2023 — 7.6 2024 — 3.8 Thereafter — 17.4 Total minimum lease payments $ 18.1 $ 89.8 Less: Amount of lease payments representing interest (0.9 ) (13.3 ) Present value of future minimum lease payments $ 17.2 $ 76.5 Less: current obligations under leases (0.6 ) (21.2 ) Long-term lease obligation $ 16.6 $ 55.3
Finance Lease, Liability, Maturity	The table below reconciles the undiscounted cash flows for each of the first five years and total of the remaining years to the finance lease liabilities and operating lease liabilities as of December 31, 2019 . Finance Operating (In millions) 2020 $ 1.3 $ 24.2 2021 16.8 21.1 2022 — 15.7 2023 — 7.6 2024 — 3.8 Thereafter — 17.4 Total minimum lease payments $ 18.1 $ 89.8 Less: Amount of lease payments representing interest (0.9 ) (13.3 ) Present value of future minimum lease payments $ 17.2 $ 76.5 Less: current obligations under leases (0.6 ) (21.2 ) Long-term lease obligation $ 16.6 $ 55.3

LEASE OBLIGATIONS (Tables)

LEASE OBLIGATIONS (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Schedule of Future Minimum Payments for Operating Leases	Future minimum payments under non-cancelable leases with initial terms in excess of one year at December 31, 2018 , were as follows: Capital Operating (In millions) 2019 $ 0.4 $ 22.5 2020 0.4 22.2 2021 0.4 19.2 2022 0.4 14.0 2023 0.4 6.0 Thereafter 2.8 25.5 Total minimum lease payments $ 4.8 $ 109.4 Less: Amounts representing interest (1.7 ) N/A $ 3.1 $ 109.4

SHARE-BASED COMPENSATION AND _2

SHARE-BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS (Tables)	12 Months Ended
	Dec. 31, 2019
Compensation Related Costs [Abstract]
Schedule of Performance Share Units	The following table summarizes information about performance share units for 2019 : Shares Weighted Average Grant Date Fair Value Non-vested at January 1, 2019 205,736 $ 61.28 Granted 134,758 69.67 Vested (101,377 ) 58.87 Forfeited or unearned (33,827 ) 66.49 Non-vested at December 31, 2019 205,290 $ 66.92 The weighted average grant-date fair value of performance share units and total fair value of performance share units vested are summarized in the following table: For the Years Ended December 31, 2019 2018 2017 Weighted average grant-date fair value of performance share units granted $ 69.67 $ 68.50 $ 65.65 Total fair value of performance share units vested (in millions) $ 6.0 $ 6.4 $ 6.5
Schedule of Restricted Stock	The following table summarizes information about restricted stock awards for 2019 : Shares Weighted Average Grant Date Fair Value Non-vested at January 1, 2019 198,776 $ 63.65 Granted 122,167 69.18 Vested (85,759 ) 59.76 Forfeited (31,713 ) 67.14 Non-vested at December 31, 2019 203,471 $ 68.06 The weighted average grant-date fair value of restricted stock awards and total fair value of restricted stock awards vested are summarized in the following table: For the Years Ended December 31, 2019 2018 2017 Weighted average grant-date fair value of restricted stock granted $ 69.18 $ 71.18 $ 63.64 Total fair value of restricted stock awards vested (in millions) $ 5.1 $ 5.5 $ 5.3

CONDENSED QUARTERLY REVENUES _2

CONDENSED QUARTERLY REVENUES AND EARNINGS (UNAUDITED) (Tables)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information	For the Three Months Ended March 31, June 30, September 30, December 31, (In millions, except per share data) 2018: Revenues $ 1,609.2 $ 1,723.6 $ 1,757.4 $ 1,784.2 Gross profit $ 265.4 $ 277.8 $ 278.0 $ 281.8 Net income (2)(3)(4) $ 40.1 $ 43.2 $ 44.3 $ 40.4 Net income per common share: Basic (1)(2)(3)(4) $ 1.95 $ 2.13 $ 2.22 $ 2.09 Diluted (1)(2)(3)(4) $ 1.93 $ 2.11 $ 2.18 $ 2.06 2019: Revenues $ 1,670.8 $ 1,803.5 $ 1,842.0 $ 1,894.0 Gross profit $ 279.2 $ 295.0 $ 293.1 $ 301.6 Net income (5)(6)(7) $ 40.9 $ 54.9 $ 45.0 $ 43.6 Net income per common share: Basic (1)(5)(6)(7) $ 2.13 $ 2.87 $ 2.36 $ 2.28 Diluted (1)(5)(6)(7) $ 2.11 $ 2.84 $ 2.33 $ 2.26 ____________________________ (1) The sum of income per common share for the four quarters does not equal total income per common share due to changes in the average number of shares outstanding during the respective periods. (2) Results for the three months ended June 30, 2018 were increased by $0.5 million as a result of gains from legal settlements, net of tax, or $0.03 per basic and diluted share. (3) Results for the three months ended September 30, 2018 were decreased by $0.6 million as a result of an adjustment to the deferred tax asset related to certain components of share-based compensation, net of tax, or $0.03 per basic and diluted share. (4) Results for the three months ended December 31, 2018 were decreased by a $2.8 million franchise rights impairment, net of tax, or $0.14 per basic and diluted share, respectively, in the aggregate. (5) Results for the three months ended March 30, 2019 were decreased by $1.8 million as a result of fixed assets write-off, net of tax, or $0.09 per basic and diluted share. (6) Results for the three months ended June 30, 2019 were increased by $9.0 million as a result of a gain on a divested dealership and real estate, net of tax, or $0.46 per basic and diluted share. (7) Results for the three months ended December 31, 2019 were decreased by $5.3 million franchise rights impairment, net of tax, or $0.27 per basic and diluted share.

DESCRIPTION OF BUSINESS AND S_4

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Description) (Details)	12 Months Ended
	Dec. 31, 2019VehicleBrandsdealership_locationfranchiseMetropolitanMarketsstatesCollisionRepairCenters
Business Organization [Line Items]
Number of franchises (in franchises) | franchise	107
Number of dealership locations (in dealership locations) | dealership_location	88
Number of vehicle brands (in vehicle brands) | VehicleBrands	31
Number of collision repair centers (in collision repair centers) | CollisionRepairCenters	25
Number of metropolitan markets (in metropolitan markets) | MetropolitanMarkets	17
Number of states (in states) | states	10
Mid-line Import Brands
Business Organization [Line Items]
Weighted brand mix	45.00%
Luxury Brands
Business Organization [Line Items]
Weighted brand mix	34.00%
Domestic Brands
Business Organization [Line Items]
Weighted brand mix	21.00%

DESCRIPTION OF BUSINESS AND S_5

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) $ in Millions	Dec. 31, 2017USD ($)	Dec. 31, 2019USD ($)segmentshares	Dec. 31, 2018USD ($)shares	Dec. 31, 2017USD ($)	Dec. 31, 2019USD ($)	Oct. 31, 2015	Dec. 31, 2014	Dec. 04, 2014
Accounting Policies [Line Items]
Remeasurement of our deferred tax balance	$ 7.9
Impairment of real estate		$ 0	$ 0	$ 0
Goodwill, impairment					$ 537.7
Retirement of previously repurchased common stock		0	0
Advertising expense		34.4	30.6	30.3
Advertising credits and volume discounts		21.1	21	18
Provisional adjustment to deferred tax asset			0.6	$ 0.6
Total debt outstanding		$ 943.3	910.1		943.3
Revenues by major brand, disclosure percentage threshold		5.00%
Number of reportable segments | segment		1
Tax Cuts and Jobs Act, reclassification from AOCI to retained earnings		$ 0.2
Mortgages
Accounting Policies [Line Items]
Long-term debt, gross		100.5	132.2		100.5
Senior Subordinated Notes | 6.0% Senior Subordinated Notes due 2024
Accounting Policies [Line Items]
Long-term debt, gross		$ 600	$ 600		$ 600
Stated interest rate of debt instrument		6.00%			6.00%	6.00%	6.00%	6.00%
Common Stock
Accounting Policies [Line Items]
Retirement of previously repurchased common stock (in shares) | shares		(202,379)	(89,967)
Retained Earnings
Accounting Policies [Line Items]
Retirement of previously repurchased common stock		$ 12.8	$ 4.8
Treasury Stock
Accounting Policies [Line Items]
Retirement of previously repurchased common stock (in shares) | shares		(202,379)	(89,967)
Retirement of previously repurchased common stock		$ 15.3	$ 5.9
Minimum
Accounting Policies [Line Items]
Loaner vehicle period of use before sale (in months)		6 months
Maximum
Accounting Policies [Line Items]
Loaner vehicle period of use before sale (in months)		12 months
Liabilities Associated with Assets Held for Sale | Mortgages
Accounting Policies [Line Items]
Long-term debt, gross		$ 28.1			$ 28.1

DESCRIPTION OF BUSINESS AND S_6

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Property and Equipment Useful Lives) (Details)	12 Months Ended
	Dec. 31, 2019
Buildings and improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	10 years
Buildings and improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	40 years
Machinery and equip | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	5 years
Machinery and equip | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	10 years
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	3 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	10 years
Company vehicles | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	3 years
Company vehicles | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	5 years

DESCRIPTION OF BUSINESS AND S_7

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Revenues by Major Brand) (Details) - New vehicles	12 Months Ended
	Dec. 31, 2019
American Honda Motor Co., Inc. (Honda and Acura)
Schedule of Revenues by Major Brand [Line Items]
Revenues by major brand, percentage	22.00%
Toyota Motor Sales, U.S.A., Inc. (Toyota and Lexus)
Schedule of Revenues by Major Brand [Line Items]
Revenues by major brand, percentage	20.00%
Nissan North America, Inc. (Nissan and Infiniti)
Schedule of Revenues by Major Brand [Line Items]
Revenues by major brand, percentage	11.00%
Ford Motor Company (Ford and Lincoln)
Schedule of Revenues by Major Brand [Line Items]
Revenues by major brand, percentage	10.00%
Mercedes-Benz USA, LLC (Mercedes-Benz, smart and Sprinter)
Schedule of Revenues by Major Brand [Line Items]
Revenues by major brand, percentage	7.00%
BMW of North America, LLC (BMW and Mini)
Schedule of Revenues by Major Brand [Line Items]
Revenues by major brand, percentage	6.00%

REVENUE RECOGNITION (Disaggrega

REVENUE RECOGNITION (Disaggregation of Revenue) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Total revenue	$ 7,210.3	$ 6,874.4
New and used vehicle
Disaggregation of Revenue [Line Items]
Total revenue	5,994.9	5,761.1
New and used vehicle | New vehicle
Disaggregation of Revenue [Line Items]
Total revenue	3,863.3	3,788.7
New and used vehicle | Used vehicle retail
Disaggregation of Revenue [Line Items]
Total revenue	1,941.3	1,783.3
New and used vehicle | Used vehicle wholesale
Disaggregation of Revenue [Line Items]
Total revenue	190.3	189.1
Parts and services
Disaggregation of Revenue [Line Items]
Total revenue	899.4	821
Parts and services | Sale of vehicle parts and accessories
Disaggregation of Revenue [Line Items]
Total revenue	148.8	139.2
Parts and services | Vehicle repair and maintenance services
Disaggregation of Revenue [Line Items]
Total revenue	750.6	681.8
Finance and insurance, net
Disaggregation of Revenue [Line Items]
Total revenue	$ 316	$ 292.3

REVENUE RECOGNITION (Contract A

REVENUE RECOGNITION (Contract Assets) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Change in Contract with Customer, Asset [Roll Forward]
Contract Assets (Current), January 1, 2018	$ 16.4	$ 16.8	$ 15	$ 14.7
Transferred to receivables from contract assets recognized at the beginning of the period	(8.8)	(7.4)	(7.6)	(7.4)
Increases related to revenue recognized, inclusive of adjustments to constraint, during the period	9.5	7	9.4	7.7
Contract Assets (Current), March 31, 2018	17.1	16.4	16.8	15
New and used vehicle | Vehicle repair and maintenance services
Change in Contract with Customer, Asset [Roll Forward]
Contract Assets (Current), January 1, 2018	4.9	4.8	4.4	4.1
Transferred to receivables from contract assets recognized at the beginning of the period	(4.9)	(4.8)	(4.4)	(4.1)
Increases related to revenue recognized, inclusive of adjustments to constraint, during the period	4.8	4.9	4.8	4.4
Contract Assets (Current), March 31, 2018	4.8	4.9	4.8	4.4
Finance and insurance, net
Change in Contract with Customer, Asset [Roll Forward]
Contract Assets (Current), January 1, 2018	11.5	12	10.6	10.6
Transferred to receivables from contract assets recognized at the beginning of the period	(3.9)	(2.6)	(3.2)	(3.3)
Increases related to revenue recognized, inclusive of adjustments to constraint, during the period	4.7	2.1	4.6	3.3
Contract Assets (Current), March 31, 2018	$ 12.3	$ 11.5	$ 12	$ 10.6

ACQUISITIONS AND DIVESTITURES_2

ACQUISITIONS AND DIVESTITURES (Acquisitions- Narrative) (Details) - Series of Individually Immaterial Business Acquisitions $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)dealership_locationfranchisecollision_center	Dec. 31, 2018USD ($)dealership_locationfranchise	Dec. 31, 2017USD ($)dealership_locationfranchisecollision_center
Business Acquisition [Line Items]
Aggregate purchase price	$ 210.4	$ 93.2	$ 80.1
Cash paid for acquisition	153.9	68.6	55
Floor plan borrowings for puchase of related inventory	55.3	22.7	$ 25.1
Purchase price holdbacks	1.2	$ 1.9
Release of purchase price holdbacks related to a prior year acquisition	$ 0.8
Goodwill and manufacturer franchise rights, period for federal and state tax deductions	15 years
Indiana
Business Acquisition [Line Items]
Number of franchises acquired (in franchises) | franchise	9	1	2
Number of dealership locations acquired (in dealership locations) | dealership_location	5	1	2
Number of collision centers acquired (in collision centers) | collision_center	1		1
Colorado
Business Acquisition [Line Items]
Number of franchises acquired (in franchises) | franchise	1
Number of dealership locations acquired (in dealership locations) | dealership_location	1
Georgia
Business Acquisition [Line Items]
Number of franchises acquired (in franchises) | franchise		2
Number of dealership locations acquired (in dealership locations) | dealership_location		2

ACQUISITIONS AND DIVESTITURES_3

ACQUISITIONS AND DIVESTITURES (Schedule of Business Acquisitions) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill	$ 201.7	$ 181.2	$ 160.8
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Inventory	70.9	27.3
Real estate	43.1	23.5
Property and equipment	4.5	0.6
Goodwill	25.9	20.4
Manufacturer franchise rights	65.3	19.9
Loaner vehicles	1.5	1.7
Liabilities assumed	(0.8)	(0.2)
Total purchase price	$ 210.4	$ 93.2

ACQUISITIONS AND DIVESTITURES_4

ACQUISITIONS AND DIVESTITURES (Divestitures- Narrative) (Details) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2019USD ($)	Dec. 31, 2019USD ($)dealership_location	Dec. 31, 2018USD ($)dealership_location	Dec. 31, 2017USD ($)dealership_locationfranchisecenter
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of dealership locations, sold (in dealership locations) | dealership_location		0	0
Proceeds from divestiture		$ 39.1	$ 0	$ 0
Gain on divestitures	$ 9	11.7	$ 0	$ 0
Disposed of by Sale | Texas
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of franchises, sold (in franchises) | franchise				1
Number of dealership locations, sold (in dealership locations) | dealership_location				1
Number of collision centers, sold (in collision centers) | center				1
Proceeds from divestiture		$ 30.1
Gain on disposition of business, gross				$ 11.7

ACCOUNTS RECEIVABLE (Details)

ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	$ 137.6	$ 131.6
Less—Allowance for doubtful accounts	(1.4)	(1.3)
Accounts receivable, net	136.2	130.3
Vehicle receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	44.8	45.7
Manufacturer receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	50.4	51.2
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	$ 42.4	$ 34.7

INVENTORIES (Details)

INVENTORIES (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components of Inventory [Line Items]
Total inventories	$ 985	$ 1,067.6
Lower of cost or market inventory reserves	6.1	6.1
Held-for-sale
Components of Inventory [Line Items]
Total inventories	67.7
New vehicles
Components of Inventory [Line Items]
Total inventories	802.6	867.2
Reduction of new vehicle inventory cost by automobile manufacturer incentives	9.6	10.1
Reduction to new vehicle cost of sales by automobile manufacturer incentives	45.7	42.4	$ 40.1
Used vehicles
Components of Inventory [Line Items]
Total inventories	140.1	158.9
Parts and accessories
Components of Inventory [Line Items]
Total inventories	$ 42.3	$ 41.5

ASSETS HELD FOR SALE (Assets He

ASSETS HELD FOR SALE (Assets Held for Sale and Liabilities Associated with the Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Assets:
Inventories	$ 67.7	$ 0
Loaners, net	3	0
Property and equipment, net	69	26.3
Operating lease right-of-use assets	6.9	0
Goodwill	5.3	0
Franchise rights	2.3	0
Total Assets	154.2	26.3
Liabilities:
Floor plan notes payable—trade	21.9	0
Floor plan notes payable—non-trade	40.9	0
Loaners/ Notes payable	3.1	0
Current maturities of long-term debt	0.3	0
Current maturities of operating leases	4.2	0
Long-term debt	27.8	0
Operating lease liabilities	2.7	0
Total Liabilities associated with assets held for sale	100.9	0
Net assets held for sale	$ 53.3	$ 26.3

ASSETS HELD FOR SALE (Narrative

ASSETS HELD FOR SALE (Narrative) (Details)	12 Months Ended
	Dec. 31, 2019USD ($)dealership_locationfranchisecollision_centerCollisionRepairCentersproperty	Dec. 31, 2018USD ($)property	Dec. 31, 2017USD ($)
Long Lived Assets Held-for-sale [Line Items]
Number of franchises (in franchises) | franchise	107
Number of collision repair centers (in collision repair centers) | CollisionRepairCenters	25
Assets held for sale	$ 53,300,000	$ 26,300,000
Property, plant and equipment, net	909,700,000	886,100,000
Liabilities associated with assets held for sale	100,900,000	0
Impairment of real estate	0	0	$ 0
Real Estate Not Currently Used in Operations
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale	38,900,000
Liabilities associated with assets held for sale	$ 8,300,000	$ 0
Pending Disposition
Long Lived Assets Held-for-sale [Line Items]
Number of real estate properties | franchise	7
Number of franchises (in franchises) | dealership_location	6
Number of collision repair centers (in collision repair centers) | collision_center	1
Assets held for sale	$ 115,300,000
Liabilities associated with assets held for sale	$ 92,600,000
Disposed of by Sale | Vacant Property
Long Lived Assets Held-for-sale [Line Items]
Number of real estate properties | property	2	2
Real estate held-for-sale	$ 14,600,000	$ 4,000,000
Held-for-sale
Long Lived Assets Held-for-sale [Line Items]
Impairment of real estate	$ 0	$ 0

OTHER CURRENT ASSETS (Details)

OTHER CURRENT ASSETS (Details) - USD ($) $ in Millions	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Other Assets [Abstract]
Loaner vehicles	$ 83.8				$ 87
Contract assets (see Note 2)	17.1	$ 16.4	$ 16.8	$ 15	14.7
Deposits	11				0.6
Prepaid expenses	5.8				5.9
Prepaid taxes	4.7				9.1
Other	6.6				4.9
Other current assets	$ 129				$ 122.2

PROPERTY AND EQUIPMENT, NET (Sc

PROPERTY AND EQUIPMENT, NET (Schedule of Property and Equipment, Net) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,180.9	$ 1,143.8
Less - Accumulated depreciation	(271.2)	(257.7)
Property and equipment, net	909.7	886.1
Property, plant and equipment, net	909.7	886.1
Finance lease	14.6
Capital lease		2.3
Held-for-sale
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	69	26.3
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	343.8	330.4
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	622.9	617.5
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	99.8	94.8
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	63.9	62.2
Company vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8.1	8.8
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 42.4	$ 30.1

PROPERTY AND EQUIPMENT, NET (Na

PROPERTY AND EQUIPMENT, NET (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Interest costs capitalized	$ 0.6	$ 0.5	$ 0.2
Depreciation and capital lease obligation amortization	$ 36.2	$ 33.7	$ 32.1

GOODWILL AND INTANGIBLE FRANC_3

GOODWILL AND INTANGIBLE FRANCHISE RIGHTS (Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended		216 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019
Goodwill [Roll Forward]
Net, beginning balance	$ 181.2	$ 160.8
Acquisitions	25.9	20.4
Divestitures	(0.1)
Reclassified to assets held for sale	(5.3)
Net, ending balance	$ 201.7	$ 181.2	$ 201.7
Goodwill, impairment			$ 537.7

GOODWILL AND INTANGIBLE FRANC_4

GOODWILL AND INTANGIBLE FRANCHISE RIGHTS (Franchise Rights) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Indefinite-lived Intangible Assets [Roll Forward]
Impairments	$ (7.1)	$ (3.7)	$ (5.1)
Reclassified to assets held for sale	(2.3)
Franchise rights
Indefinite-lived Intangible Assets [Roll Forward]
Beginning balance	65.8	49.6
Acquisitions	65.3	19.9
Impairments	(7.1)	(3.7)
Ending balance	$ 121.7	$ 65.8	$ 49.6

FLOOR PLAN NOTES PAYABLE_TRAD_2

FLOOR PLAN NOTES PAYABLE—TRADE (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
Floor plan notes payable—trade	$ 146.5	$ 125.3
Floor plan notes payable offset account	(16.2)	(11.3)
Total floor plan notes payable—trade, net	130.3	$ 114
Floor plan notes payable—trade, liabilities associated with assets held for sale	$ 21.9

FLOOR PLAN NOTES PAYABLE_NON-_3

FLOOR PLAN NOTES PAYABLE—NON-TRADE (Consist of) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
Floor plan notes payable—new non-trade	$ 773.6	$ 843
Floor plan notes payable—used non-trade	0	30
Floor plan notes payable offset account	(115.9)	(20.9)
Total floor plan notes payable—non-trade, net	657.7	$ 852.1
Floor plan notes payable—non-trade, liabilities associated with assets held for sale	$ 40.9

FLOOR PLAN NOTES PAYABLE_NON-_4

FLOOR PLAN NOTES PAYABLE—NON-TRADE (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Oct. 16, 2014
Debt Instrument [Line Items]
Floor plan notes payable, offsets	$ 132,100,000	$ 32,200,000
Revolving Credit Facility1 | Line of Credit | Minimum
Debt Instrument [Line Items]
Commitment fee percentage	0.15%
Revolving Credit Facility1 | Line of Credit | Maximum
Debt Instrument [Line Items]
Commitment fee percentage	0.40%
Revolving Credit Facility1 | Line of Credit | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility1 | Line of Credit | Federal Funds
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Revolving Credit Facility1 | Bank of America | Line of Credit | LIBOR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility1 | Bank of America | Line of Credit | LIBOR | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Revolving Credit Facility1 | Bank of America | Line of Credit | Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.15%
Revolving Credit Facility1 | Bank of America | Line of Credit | Base Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
New Vehicle Floor Plan Facility | Line of Credit | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.10%
New Vehicle Floor Plan Facility | Line of Credit | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.10%
Used Vehicle Floor Plan Facility | Line of Credit | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.40%
Used Vehicle Floor Plan Facility | Line of Credit | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.40%
New Vehicle and Used Vehicle Floor Plan | Line of Credit
Debt Instrument [Line Items]
Unused capacity, commitment fee percentage	0.15%
Revolving Credit Facility | Bank of America
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 250,000,000
Standby Letters of Credit | Bank of America
Debt Instrument [Line Items]
Face amount	50,000,000		$ 50,000,000
New Vehicle Revolving Floor Plan Facility | Bank of America
Debt Instrument [Line Items]
Current borrowing capacity	60,000,000
Maximum borrowing capacity	1,040,000,000
Remaining borrowing capacity	$ 190,000,000
Used Vehicle Revolving Floor Plan Facility
Debt Instrument [Line Items]
Commitment fee percentage	0.15%
Used Vehicle Revolving Floor Plan Facility | Bank of America
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 160,000,000
Senior Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 350,000,000

ACCOUNTS PAYABLE AND ACCRUED _3

ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Accounts payable	$ 81.7	$ 81.9
Loaner vehicles notes payable	83.9	87.5
Accrued compensation	30.5	27.6
Accrued finance and insurance chargebacks	22.9	23
Accrued insurance	25.3	20.9
Taxes payable	30.5	23.7
Accrued advertising	5.1	3.9
Accrued interest	6	6.6
Other	22.8	23.3
Accounts payable and accrued liabilities	308.7	298.4
Loaners/ Notes payable	$ 3.1	$ 0

LONG-TERM DEBT (Schedule of Lon

LONG-TERM DEBT (Schedule of Long-Term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Oct. 31, 2015	Dec. 31, 2014	Dec. 04, 2014
Debt Instrument [Line Items]
Finance Lease, Liability	$ 17.2	$ 3.1
Total debt outstanding	943.3	910.1
Add: unamortized premium on 6.0% Senior Subordinated Notes due 2024	5.1	6
Less: debt issuance costs	(9)	(10.8)
Long-term debt, including current portion	939.4	905.3
Less—current portion, net of debt issuance costs	(32.4)	(38.8)
Long-term debt	907	866.5
Mortgages
Debt Instrument [Line Items]
Long-term debt, gross	$ 100.5	$ 132.2
Weighted average interest rate	5.30%	5.20%
6.0% Senior Subordinated Notes due 2024 | Senior Subordinated Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 600	$ 600
Less: debt issuance costs			$ (3.8)
Stated interest rate of debt instrument	6.00%		6.00%	6.00%	6.00%
2018 BofA Real Estate Facility
Debt Instrument [Line Items]
Mortgage note payable classified as Liabilities Associated with Assets Held for Sale	$ 26.6
2018 Wells Fargo Master Loan Facility
Debt Instrument [Line Items]
Long-term debt, gross		$ 25
2015 Wells Fargo Master Loan Facility
Debt Instrument [Line Items]
Mortgage note payable classified as Liabilities Associated with Assets Held for Sale	$ 1.5

LONG-TERM DEBT (Schedule of Agg

LONG-TERM DEBT (Schedule of Aggregate Maturities of Long-Term Debt) (Details) $ in Millions	Dec. 31, 2019USD ($)
Debt Disclosure [Abstract]
2020	$ 35.7
2020	35
2022	33.2
2023	53.2
2024	648.6
Thereafter	165.7
Total debt	$ 971.4

LONG-TERM DEBT (6.0% Senior Sub

LONG-TERM DEBT (6.0% Senior Subordinated Notes due 2024) (Details) - USD ($)	1 Months Ended		12 Months Ended
	Oct. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2019	Dec. 31, 2018	Dec. 04, 2014
Debt Instrument [Line Items]
Deferred financing costs				$ 9,000,000	$ 10,800,000
Senior Subordinated Notes | 6.0% Senior Subordinated Notes due 2024
Debt Instrument [Line Items]
Face amount	$ 200,000,000	$ 400
Stated interest rate of debt instrument	6.00%	6.00%		6.00%		6.00%
Underwriting fees	$ 2,800,000
Redemption price	104.25%
Proceeds from issuance of debt	$ 210,200,000
Effective percentage	5.41%
Deferred financing costs	$ 3,800,000
Long-term debt, gross				$ 600,000,000	$ 600,000,000
Senior Subordinated Notes | 8.375% Senior Subordinated Notes due 2020
Debt Instrument [Line Items]
Stated interest rate of debt instrument		8.375%
Extinguishment of debt, amount		$ 300,000,000
Purchaser | Senior Subordinated Notes | 6.0% Senior Subordinated Notes due 2024
Debt Instrument [Line Items]
Premiums paid pursuant to terms of redemption notice			$ 8,500,000

LONG-TERM DEBT (Mortgage Notes

LONG-TERM DEBT (Mortgage Notes Payable) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Mortgages
Debt Instrument [Line Items]
Long-term debt, gross	$ 100.5	$ 132.2

LONG-TERM DEBT (2018 BofA Real

LONG-TERM DEBT (2018 BofA Real Estate Facility) (Details) - Bank of America - 2018 BofA Real Estate Facility - USD ($) $ in Millions	Nov. 13, 2018	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 128.1
Quarterly principal payments as percent of initial amount	1.25%
Repayment schedule	20 years
Long-term debt, gross		$ 88.3	$ 25.7
LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.90%
Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Federal Funds
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
One month LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%

LONG-TERM DEBT (2018 Wells Farg

LONG-TERM DEBT (2018 Wells Fargo Master Loan Facility) (Details) - 2018 Wells Fargo Master Loan Facility $ in Millions	Nov. 06, 2018	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Nov. 16, 2018USD ($)payment
Debt Instrument [Line Items]
Long-term debt, gross			$ 25
Wells Fargo
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 100
Number of equal monthly principal payments | payment				108
Amortization schedule	19 years
Long-term debt, gross		$ 25
Wells Fargo | LIBOR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Wells Fargo | LIBOR | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.85%

LONG-TERM DEBT (2013 BofA Real

LONG-TERM DEBT (2013 BofA Real Estate Facility) (Details) - 2013 BofA Real Estate Facility - Bank of America - USD ($) $ in Millions	Sep. 26, 2013	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 75
Quarterly principal payments as percent of initial amount	1.25%
Repayment schedule	20 years
Long-term debt, gross		$ 35.5	$ 40.8
LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Federal Funds
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
One month LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%

LONG-TERM DEBT (2015 Wells Farg

LONG-TERM DEBT (2015 Wells Fargo Master Loan Facility) (Details) - 2015 Wells Fargo Master Loan Facility - Wells Fargo $ in Millions	Feb. 03, 2015USD ($)payment	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 100
Number of equal monthly principal payments | payment	108
Amortization schedule	19 years
Long-term debt, gross		$ 76.8	$ 83.3
LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.85%

LONG-TERM DEBT (Schedule of Mor

LONG-TERM DEBT (Schedule of Mortgage Notes Payable) (Details) - Mortgages - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Aggregate Principal Outstanding	$ 326.1	$ 307
Carrying Value of Collateralized Related Real Estate	658.5	692.7
Captive mortgages
Debt Instrument [Line Items]
Aggregate Principal Outstanding	80.8	111.6
Carrying Value of Collateralized Related Real Estate	182.1	185.5
Other mortgage debt
Debt Instrument [Line Items]
Aggregate Principal Outstanding	19.7	20.6
Carrying Value of Collateralized Related Real Estate	43.9	43.3
2018 BofA Real Estate Facility
Debt Instrument [Line Items]
Aggregate Principal Outstanding	88.3	25.7
Carrying Value of Collateralized Related Real Estate	123.6	137.2
2018 Wells Fargo Master Loan Facility
Debt Instrument [Line Items]
Aggregate Principal Outstanding	25	25
Carrying Value of Collateralized Related Real Estate	113.7	114.3
2013 BofA Real Estate Facility
Debt Instrument [Line Items]
Aggregate Principal Outstanding	35.5	40.8
Carrying Value of Collateralized Related Real Estate	74.6	82.2
2015 Wells Fargo Master Loan Facility
Debt Instrument [Line Items]
Aggregate Principal Outstanding	76.8	83.3
Carrying Value of Collateralized Related Real Estate	$ 120.6	$ 130.2

LONG-TERM DEBT (Revolving Credi

LONG-TERM DEBT (Revolving Credit Facility and Stock Restrictions) (Details) - USD ($)	Dec. 31, 2019	Sep. 30, 2019	Oct. 16, 2014
Reastated Credit Agreement
Debt Instrument [Line Items]
General restricted payments allowance	$ 150,000,000
Restricted payments capacity additions as percent of net income	50.00%
Restricted payments capacity additions as percent of cash proceeds from sale of equity	100.00%
Reastated Credit Agreement | Maximum
Debt Instrument [Line Items]
Consolidated leverage ratio	300.00%
Annual principal payment	$ 20,000,000
Bank of America | Reastated Credit Agreement
Debt Instrument [Line Items]
Current borrowing capacity			$ 250,000,000
Remaining borrowing capacity	$ 47,300,000
Bank of America | Reastated Credit Agreement | Federal Funds
Debt Instrument [Line Items]
Interest rate	0.50%
Bank of America | Reastated Credit Agreement | LIBOR
Debt Instrument [Line Items]
Interest rate	1.00%	1.25%
Bank of America | Reastated Credit Agreement | LIBOR | Minimum
Debt Instrument [Line Items]
Interest rate	1.00%
Bank of America | Reastated Credit Agreement | LIBOR | Maximum
Debt Instrument [Line Items]
Interest rate	2.00%
Bank of America | Reastated Credit Agreement | Base Rate
Debt Instrument [Line Items]
Interest rate		0.25%
Bank of America | Reastated Credit Agreement | Base Rate | Minimum
Debt Instrument [Line Items]
Interest rate	0.15%
Bank of America | Reastated Credit Agreement | Base Rate | Maximum
Debt Instrument [Line Items]
Interest rate	1.00%
Bank of America | Reastated Credit Agreement | Guarantee Obligations
Debt Instrument [Line Items]
Amount of letters of credit outstanding	$ 12,700,000
Bank of America | Standby Letters of Credit
Debt Instrument [Line Items]
Face amount	50,000,000		$ 50,000,000
Bank of America | New Vehicle Revolving Floor Plan Facility
Debt Instrument [Line Items]
Current borrowing capacity	60,000,000
Remaining borrowing capacity	$ 190,000,000
Bank of America | New Vehicle Floor Plan Facility | LIBOR
Debt Instrument [Line Items]
Interest rate	1.10%
Bank of America | New Vehicle Floor Plan Facility | Base Rate
Debt Instrument [Line Items]
Interest rate	0.10%
Bank of America | Used Vehicle Floor Plan Facility | LIBOR
Debt Instrument [Line Items]
Interest rate	1.40%
Bank of America | Used Vehicle Floor Plan Facility | Base Rate
Debt Instrument [Line Items]
Interest rate	0.40%

FINANCIAL INSTRUMENTS AND FAI_3

FINANCIAL INSTRUMENTS AND FAIR VALUE (Narrative) (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2015	Nov. 30, 2013
Fair Value, Inputs, Level 2 | Other Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of interest rate swaps	$ 3,800,000
Fair Value, Inputs, Level 2 | Other Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of interest rate swaps	(600,000)
New Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional principal amount of derivative liability	79,800,000	$ 85,100,000	$ 100,000,000
Notional principal amount of derivative liability, at maturity			$ 53,100,000
Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional principal amount of derivative liability	52,700,000	56,500,000		$ 75,000,000
Notional principal amount of derivative liability, at maturity				$ 38,700,000
Fair value of interest rate swaps	3,800,000	$ (600,000)
Interest rate swap, net loss amount expected to be reclassified in the next twelve months	$ (900,000)

FINANCIAL INSTRUMENTS AND FAI_4

FINANCIAL INSTRUMENTS AND FAIR VALUE (Summary of Carrying Values and Fair Values of Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Oct. 31, 2015	Dec. 31, 2014	Dec. 04, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total carrying value	$ 922.2	$ 913
Total fair value	983.7	876.7
Mortgages Notes Payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total carrying value	323.4	307
Total fair value	364.2	306.7
6.0% Senior Subordinated Notes due 2024 | Senior Subordinated Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total carrying value	598.8	606
Total fair value	$ 619.5	$ 570
Stated interest rate of debt instrument	6.00%		6.00%	6.00%	6.00%

FINANCIAL INSTRUMENTS AND FAI_5

FINANCIAL INSTRUMENTS AND FAIR VALUE (Schedule of Fair value of Interest Rate Swaps) (Details) - Interest Rate Swap - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of interest rate swaps	$ 3.8	$ (0.6)
Other current liabilities/(assets)
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of interest rate swaps	0.9	(0.2)
Other long-term liabilities/(assets)
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of interest rate swaps	$ 2.9	$ (0.4)

FINANCIAL INSTRUMENTS AND FAI_6

FINANCIAL INSTRUMENTS AND FAIR VALUE (Schedule of Derivative Instruments Effect on the Consolidated Income Statement, Including Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Results Recognized in AOCI (Effective Portion)	$ (4.4)	$ 2.3	$ 1.9
Interest Rate Swap
Derivative Instruments, Gain (Loss) [Line Items]
Results Recognized in AOCI (Effective Portion)	(4.4)	1.8	(0.1)
Amount Reclassified from AOCI to Earnings		$ (0.5)
Interest Rate Swap | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount Reclassified from AOCI to Earnings	$ 0		$ (2)

INCOME TAXES (Schedule of Compo

INCOME TAXES (Schedule of Components of Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal	$ 46.3	$ 43.8	$ 59.1
State	8	7.1	8.3
Total Current Income Tax Expense	54.3	50.9	67.4
Deferred:
Federal	5.5	3.9	1.2
State	(0.3)	2	1.4
Total Deferred Income Tax Expense	5.2	5.9	2.6
Total Income Tax Expense	$ 59.5	$ 56.8	$ 70

INCOME TAXES (Schedule of Effec

INCOME TAXES (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Amount
Income tax provision at the statutory rate	$ 51.2	$ 47.2	$ 73.2
State income tax expense, net	7.8	8.7	6.4
Non-deductible / non-tax items	0.6	0.4	(0.3)
Effect of enactment of tax reform	0	0.6	(7.9)
Adjustments and settlements	0	0	(0.6)
Other, net	(0.1)	(0.1)	(0.8)
Total Income Tax Expense	$ 59.5	$ 56.8	$ 70
Percent
Income tax provision at the statutory rate	21.00%	21.00%	35.00%
State income tax expense, net	3.20%	3.90%	3.00%
Non-deductible / non-tax items	0.20%	0.20%	(0.10%)
Effect of enactment of tax reform	0	0.002	(0.038)
Adjustments and settlements	0.00%	0.00%	(0.30%)
Other, net	0.00%	0.00%	(0.30%)
Income tax provision	24.40%	25.30%	33.50%

INCOME TAXES (Schedule of Defer

INCOME TAXES (Schedule of Deferred Income Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred income tax assets:
F&I chargeback liabilities	$ 11.8	$ 11
Other accrued liabilities	2.1	3.2
Stock-based compensation	2.2	2.4
Operating lease right-of-use assets	18.7	0
Other, net	9	3.9
Total deferred income tax assets	43.8	20.5
Deferred income tax liabilities:
Intangible asset amortization	(16.4)	(12.5)
Depreciation	(33.4)	(26.4)
Operating lease liabilities	(17.7)	0
Other, net	(2.3)	(3.3)
Total deferred income tax liabilities	(69.8)	(42.2)
Net deferred income tax (liabilities) assets	$ (26)	$ (21.7)

INCOME TAXES (Narrative) (Detai

INCOME TAXES (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Prepaid taxes	$ 4,700,000	$ 9,100,000
Unrecognized tax benefits	0	0	$ 0
Effect of enactment of tax reform	0	600,000	(7,900,000)
Provisional adjustment to deferred tax asset		600,000	$ 600,000
Accounts payable and accrued liabilities
Operating Loss Carryforwards [Line Items]
Taxes payable	$ 1,300,000
Other current assets
Operating Loss Carryforwards [Line Items]
Prepaid taxes		$ 4,600,000

OTHER LONG-TERM LIABILITIES (De

OTHER LONG-TERM LIABILITIES (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Other Liabilities Disclosure [Abstract]
Accrued finance and insurance chargebacks	$ 22.9	$ 21.2
Deferred rent	0	4.5
Interest rate swap	2.9	0
Unclaimed property	2.9	3.3
Other	3.7	1.7
Other long-term liabilities	$ 32.4	$ 30.7

SUPPLEMENTAL CASH FLOW INFORM_3

SUPPLEMENTAL CASH FLOW INFORMATION (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Supplemental Cash Flow Information [Abstract]
Interest payments made including amounts capitalized	$ 91.2	$ 82.5	$ 76
Cash paid during the period related to floor plan interest	38.6	31.2	22.3
Income taxes paid	48.4	40.4	102.7
Loaner vehicles transferred from other current assets to inventory	141	$ 193.9	$ 156.2
Non cash investing and financing activities on previously leased real estate	$ 4.1

SUPPLEMENTAL CASH FLOW INFORM_4

SUPPLEMENTAL CASH FLOW INFORMATION (Schedule of Other Adjustments to Reconcile Net Income to Cash Flow from Operating Activities) (Details) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract]
Amortization of debt issuance costs	$ 2.5	$ 2.5	$ 3.2
Loss on disposal of fixed assets	2.6	0.9	2.1
Other individually immaterial items	(0.3)	(0.3)	(1)
Other adjustments, net	$ 4.8	$ 3.1	$ 4.3

LEASES (Narrative) (Details)

LEASES (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, right-of-use asset	$ 65.6	$ 0
Operating lease, liability	76.5
Accounting Standards Update 2018-11
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, right-of-use asset	86.9
Lease liability reduced for deferent rent	4.4
Operating lease, liability	$ 91.3

LEASES (Balance Sheets) (Detail

LEASES (Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Operating lease right-of-use assets	$ 65.6	$ 0
Operating Lease, Asset Held-for-Sale	6.9
Assets, Finance	14.6
Total right-of-use assets	87.1
Liabilities, Current, Operating	17	0
Operating Lease, Liability Held-for-Sale, Current	4.2
Liabilities, Current, Finance	0.6
Liabilities, Non-Current, Operating	52.6	$ 0
Operating Lease, Liability Held-for-Sale, Noncurrent	2.7
Liabilities, Non-Current, Finance	16.6
Total lease liabilities	$ 93.7

LEASES (Lease Term and Discount

LEASES (Lease Term and Discount Rate) (Details)	Dec. 31, 2019
Leases [Abstract]
Weighted Average Lease Term - Operating Leases	5 years 8 months 12 days
Weighted Average Lease Term - Finance Lease	1 year 2 months 12 days
Weighted Average Discount Rate - Operating Leases	4.70%
Weighted Average Discount Rate - Finance Leases	4.10%

LEASES (Cost) (Details)

LEASES (Cost) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
Leases [Abstract]
Finance lease cost (Interest)	$ 0.7
Operating lease cost	23.3
Short-term lease cost	2.7
Variable lease cost	1
Total lease cost	$ 27.7

LEASES (Other Information) (Det

LEASES (Other Information) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
Leases [Abstract]
Operating cash flows from finance lease	$ 0.7
Operating cash flows from operating leases	23.7
Financing cash flows from finance lease	0.4
Right-of-use assets obtained in exchange for new finance lease liabilities	17.7
Right-of-use assets obtained in exchange for new operating lease liabilities	14.4
Changes to finance lease right-of-use asset resulting from lease reassessment event	$ (3.1)

LEASES (Liabilities) (Details)

LEASES (Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Finance Lease, Liability, Payment, Due [Abstract]
2020	$ 1.3
2021	16.8
2022	0
2023	0
2024	0
Thereafter	0
Total minimum lease payments	18.1
Less: amount of lease payments representing interest	(0.9)
Present value of future minimum lease payments	17.2	$ 3.1
Less: current obligations under leases	(0.6)
Long-term lease obligation	16.6
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2020	24.2
2021	21.1
2022	15.7
2023	7.6
2024	3.8
Thereafter	17.4
Total minimum lease payments	89.8
Less: amount of lease payments representing interest	(13.3)
Present value of future minimum lease payments	76.5
Less: current obligations under leases	(21.2)
Long-term lease obligation	$ 55.3

LEASE OBLIGATIONS (Narrative) (

LEASE OBLIGATIONS (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)transaction	Dec. 31, 2017USD ($)transaction
Operating Leased Assets [Line Items]
Operating lease rent expense		$ 25.6	$ 26.7
Previously leased real estate purchased, number of purchases | transaction		1	2
Purchases of previously leased real estate	$ 4.9	$ 4.4	$ 5.4
Previously leased real estate purchased, purchase price		$ 4.4	9.5
Previously leased real estate purchased, loss due to termination of related lease obligations			$ 0.2
Minimum
Operating Leased Assets [Line Items]
Operating leases, remaining term	1 year
Maximum
Operating Leased Assets [Line Items]
Operating leases, remaining term	20 years

LEASE OBLIGATIONS (Schedule of

LEASE OBLIGATIONS (Schedule of Minimum Lease Payments) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Capital
2019	$ 0.4
2020	0.4
2021	0.4
2022	0.4
2023	0.4
Thereafter	2.8
Total minimum lease payments	4.8
Less: Amounts representing interest	(1.7)
Total minimum lease payments, present value	$ 3.1	$ 109.4
Operating
2019		22.5
2020		22.2
2021		19.2
2022		14
2023		6
Thereafter		25.5
Total minimum lease payments		$ 109.4

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Details) - Guarantee Obligations $ in Millions	Dec. 31, 2019USD ($)
Loss Contingencies [Line Items]
Amount of surety bond line maintained	$ 5.1
Reastated Credit Agreement | Bank of America
Loss Contingencies [Line Items]
Amount of letters of credit outstanding	$ 12.7

SHARE-BASED COMPENSATION AND _3

SHARE-BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS (Share-based Compensation) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Apr. 17, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of instruments provided for grant	1,500,000
Number of shares still available for grant (in shares)	1,600,000
Share-based compensation expense	$ 12.5	$ 10.5	$ 13.6
Share-based compensation expense, tax benefit	3.1	$ 2.6	$ 4.5
Total unrecognized share-based compensation expense related to nonvested awards	$ 11.9
Weighted average period of recognition	2 years 1 month 17 days
Expected future recognition of unrecognized compensation expense related to nonvested share-based awards, 2020	$ 6.8
Expected future recognition of unrecognized compensation expense related to nonvested share-based awards, 2021	3.3
Expected future recognition of unrecognized compensation expense related to nonvested share-based awards, 2022	$ 1.8
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares forfeited or repurchased (in shares)	33,827
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares forfeited or repurchased (in shares)	31,713
2019 Plan | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)				1,590,000
Number of shares still available for grant (in shares)				641,363

SHARE-BASED COMPENSATION AND _4

SHARE-BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS (Schedule of Performance Share Units) (Details) - Performance Share Units - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum percent of target earned	150.00%
Award vesting period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outsanding, beginning balance (in shares)	205,736
Vested (in shares)	(101,377)
Forfeited (in shares)	(33,827)
Outsanding, ending balance (in shares)	205,290	205,736
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding, beginning balance, weighted average grant date fair value (in dollars per share)	$ 61.28
Granted, weighted average grant date fair value (in dollars per share)	69.67	$ 68.50	$ 65.65
Vested, weighted average grant date fair value (in dollars per share)	58.87
Forfeited, weighted average grant date fair value (in dollars per share)	66.49
Outstanding, ending balance, weighted average grant date fair value (in dollars per share)	$ 66.92	$ 61.28
Total fair value of performance share units vested (in millions)	$ 6	$ 6.4	$ 6.5
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares that could be earned, range	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Granted (in shares)	134,758
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares that could be earned, range	150.00%

SHARE-BASED COMPENSATION AND _5

SHARE-BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS (Schedule of Restricted Stock) (Details) - Restricted Stock Awards - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outsanding, beginning balance (in shares)	198,776
Granted (in shares)	122,167
Vested (in shares)	(85,759)
Forfeited (in shares)	(31,713)
Outsanding, ending balance (in shares)	203,471	198,776
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding, beginning balance, weighted average grant date fair value (in dollars per share)	$ 63.65
Granted, weighted average grant date fair value (in dollars per share)	69.18	$ 71.18	$ 63.64
Vested, weighted average grant date fair value (in dollars per share)	59.76
Forfeited, weighted average grant date fair value (in dollars per share)	67.14
Outstanding, ending balance, weighted average grant date fair value (in dollars per share)	$ 68.06	$ 63.65
Total fair value of restricted stock awards vested	$ 5.1	$ 5.5	$ 5.3

SHARE-BASED COMPENSATION AND _6

SHARE-BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS (Employee Benefit Plans) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Employee Retirement Plan:
Period of eligibility to participate in benefit plan (in days)	84 days
Maximum annual contributions per employee, percent	75.00%
Maximum annual contribution per employee	$ 18,500
Employer matching contribution, employment requirement period for matching eligibility, minimum	1 year
Employer matching contribution after one year of employment, percent	50.00%
Employer matching contribution, percent of employees' gross pay	4.00%
Employers matching contribution, vesting period after date of hire (in years)	4 years
Employer matching contributions	$ 3,700,000	$ 3,200,000	$ 3,000,000
Age 50 or More
Employee Retirement Plan:
Maximum annual contribution per employee	$ 24,500

CONDENSED QUARTERLY REVENUES _3

CONDENSED QUARTERLY REVENUES AND EARNINGS (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income per share:
Revenues	$ 1,894	$ 1,842	$ 1,803.5	$ 1,670.8	$ 1,784.2	$ 1,757.4	$ 1,723.6	$ 1,609.2	$ 7,210.3	$ 6,874.4	$ 6,456.5
Gross profit	301.6	293.1	295	279.2	281.8	278	277.8	265.4	1,168.9	1,103	1,055.9
Net income	$ 43.6	$ 45	$ 54.9	$ 40.9	$ 40.4	$ 44.3	$ 43.2	$ 40.1	$ 184.4	$ 168	$ 139.1
Basic (in dollars per share)	$ 2.28	$ 2.36	$ 2.87	$ 2.13	$ 2.09	$ 2.22	$ 2.13	$ 1.95	$ 9.65	$ 8.36	$ 6.69
Diluted (in dollars per share)	2.26	$ 2.33	2.84	2.11	2.06	$ 2.18	$ 2.11	$ 1.93	$ 9.55	$ 8.28	$ 6.62
Gain on litigation settlement							$ 0.5
Earnings (loss) per basic and diluted share (in dollars per share)	$ (0.27)		$ 0.46	$ (0.09)	$ (0.14)		$ 0.03
Loss on tax adjustments							$ 0.6
Income tax adjustments per basic and diluted shares (in dollars per share)							$ (0.03)
Impairment of indefinite-lived assets	$ 5.3				$ 2.8				$ 7.1	$ 3.7	$ 5.1
Asset impairment charges				$ 1.8
Gain on divestitures			$ 9						$ 11.7	$ 0	$ 0

SUBSEQUENT EVENTS (Details)

SUBSEQUENT EVENTS (Details)	Feb. 19, 2020USD ($)	Feb. 07, 2020USD ($)	Feb. 03, 2020USD ($)	Dec. 11, 2019USD ($)	Mar. 31, 2020dealership_location	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Oct. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 04, 2014
Reastated Credit Agreement | Bank of America
Subsequent Event [Line Items]
Long-term debt, gross						$ 387,000,000
Maximum borrowing capacity						350,000,000
New Vehicle Floor Plan Facility | Bank of America
Subsequent Event [Line Items]
Long-term debt, gross						237,000,000
Maximum borrowing capacity						1,350,000,000
Used Vehicle Floor Plan Facility | Bank of America
Subsequent Event [Line Items]
Long-term debt, gross						150,000,000
Maximum borrowing capacity						$ 200,000,000
6.0% Senior Subordinated Notes due 2024 | Senior Subordinated Notes
Subsequent Event [Line Items]
Face amount								$ 200,000,000	$ 400
Stated interest rate of debt instrument						6.00%		6.00%	6.00%	6.00%
Long-term debt, gross						$ 600,000,000	$ 600,000,000
Subsequent Event | New BofA Real Estate Facility | Bank of America
Subsequent Event [Line Items]
Face amount		$ 280,600,000
Term		7 years
Long-term debt, gross		$ 216,600,000
Maximum percent as a single withdraw		80.00%
Subsequent Event | 4.50% Senior Notes due 2028 | Senior Subordinated Notes
Subsequent Event [Line Items]
Face amount	$ 525,000,000
Stated interest rate of debt instrument	4.50%
Subsequent Event | 4.75% Senior Notes due 2030 | Senior Subordinated Notes
Subsequent Event [Line Items]
Face amount	$ 600,000,000
Stated interest rate of debt instrument	4.75%
Subsequent Event | 6.0% Senior Subordinated Notes due 2024 | Senior Subordinated Notes
Subsequent Event [Line Items]
Stated interest rate of debt instrument			6.00%
Extinguishment of debt, amount	$ 600,000,000
Subsequent Event | Existing Notes
Subsequent Event [Line Items]
Redemption price, percentage			103.00%
Premiums paid pursuant to terms of redemption notice			$ 18,000,000
Park Place
Subsequent Event [Line Items]
Consideration transfered				$ 1,000,000,000
Goodwill				785,000,000
Real estate and leaseholds				215,000,000
Parts and fixed assets				$ 30,000,000
Park Place | Forecast [Member]
Subsequent Event [Line Items]
Number of luxury dealerships to be open | dealership_location					10
Number of dealerships to be open | dealership_location					1