Credit Facilities	3 Months Ended
Mar. 31, 2018
Line of Credit Facility [Abstract]
CREDIT FACILITIES	CREDIT FACILITIES In the U.S., the Company has a $1.8 billion revolving syndicated credit arrangement that matures on June 17, 2021 and is comprised of 24 financial institutions, including six manufacturer-affiliated finance companies (“Revolving Credit Facility”), consisting of two tranches. The borrowing capacity of the Revolving Credit Facility can be allocated between the two tranches, subject to certain limits. For U.S. vehicle inventory floorplan financing, the Revolving Credit Facility provides a maximum of $1.75 billion (“Floorplan Line”) and, for working capital and general corporate purposes (including acquisitions), the Revolving Credit Facility provides a maximum of $360.0 million and a minimum of $50.0 million (“Acquisition Line”). The Company also has a $300.0 million floorplan financing arrangement (“FMCC Facility”) with Ford Motor Credit Company (“FMCC”) for financing of new Ford vehicles in the U.S. and other floorplan financing arrangements with several other automobile manufacturers for financing of a portion of its U.S. rental vehicle inventory. Within the Company's Consolidated Balance Sheets, Floorplan notes payable - credit facility and other primarily reflects amounts payable for the purchase of specific new, used and rental vehicle inventory (with the exception of new and rental vehicle purchases financed through lenders affiliated with the respective manufacturer) whereby financing is provided by the Revolving Credit Facility. Floorplan notes payable - manufacturer affiliates reflects amounts related to the purchase of vehicles whereby financing is provided by the FMCC Facility, the financing of a portion of the Company's rental vehicles in the U.S. (through lenders affiliated with the respective manufacturer), as well as the financing of new, used, and rental vehicles with manufacturer affiliates in both the U.K. and Brazil. Payments on the floorplan notes payable are generally due as the vehicles are sold. As a result, these obligations are reflected in the accompanying Consolidated Balance Sheets as current liabilities. Revolving Credit Facility After considering the outstanding balance of $1,087.0 million at March 31, 2018, the Company had $353.0 million of available floorplan borrowing capacity under the Floorplan Line. Included in the $353.0 million available borrowings under the Floorplan Line was $74.4 million of immediately available funds. The weighted average interest rate on the Floorplan Line was 3.0% and 2.7% as of March 31, 2018 and December 31, 2017, respectively, excluding the impact of the Company’s interest rate derivative instruments. With regards to the Acquisition Line, there were $28.0 million borrowings outstanding as of March 31, 2018 and $27.0 million borrowings outstanding as of December 31, 2017, both of which consisted entirely of borrowings in British pound sterling. The interest rate on the Acquisition Line was 2.25% as of March 31, 2018, representing the applicable rate for borrowings in British pound sterling. After considering $25.0 million of outstanding letters of credit and other factors included in the Company’s available borrowing base calculation, there was $307.5 million of available borrowing capacity under the Acquisition Line as of March 31, 2018. The amount of available borrowing capacity under the Acquisition Line is limited from time to time based upon certain debt covenants. The Revolving Credit Facility contains a number of significant covenants that, among other things, restrict the Company’s ability to make disbursements outside of the ordinary course of business, dispose of assets, incur additional indebtedness, create liens on assets, make investments and engage in mergers or consolidations. The Company is also required to comply with specified financial tests and ratios defined in the Revolving Credit Facility, such as the fixed charge coverage and total adjusted leverage ratios. Further, the Revolving Credit Facility restricts the Company’s ability to make certain payments, such as dividends or other distributions of assets, properties, cash, rights, obligations or securities (“Restricted Payments”). The Restricted Payments cannot exceed the sum of $208.5 million plus (or minus if negative) (a) one-half of the aggregate consolidated net income for the period beginning on April 1, 2014 and ending on the date of determination and (b) the amount of net cash proceeds received from the sale of capital stock after June 2, 2014 and ending on the date of determination less (c) cash dividends and share repurchases after June 2, 2014 (“Credit Facility Restricted Payment Basket”). For purposes of the calculation of the Credit Facility Restricted Payment Basket, net income represents such amounts per the Consolidated Financial Statements adjusted to exclude the Company’s foreign operations, non-cash interest expense, non-cash asset impairment charges, and non-cash stock-based compensation. As of March 31, 2018, the Credit Facility Restricted Payment Basket totaled $186.6 million. The Company was in compliance with all applicable covenants and ratios under the Revolving Credit Facility as of March 31, 2018. All of the U.S. dealership-owning subsidiaries are co-borrowers under the Revolving Credit Facility. The Company's obligations under the Revolving Credit Facility are secured by essentially all of the Company's U.S. personal property (other than equity interests in dealership-owning subsidiaries), including all motor vehicle inventory and proceeds from the disposition of dealership-owning subsidiaries, excluding inventory financed directly with manufacturer-affiliates and other third-party financial institutions. Ford Motor Credit Company Facility As of March 31, 2018, the Company had an outstanding balance of $146.3 million under the FMCC Facility with an available floorplan borrowing capacity of $153.7 million. Included in the $153.7 million available borrowings under the FMCC Facility was $24.0 million of immediately available funds. This facility bears interest at a rate of Prime plus 150 basis points minus certain incentives. The interest rate on the FMCC Facility was 6.25% before considering the applicable incentives as of March 31, 2018. Other Credit Facilities The Company has credit facilities with financial institutions in the U.K., most of which are affiliated with the manufacturers, for financing new, used and rental vehicle inventories related to its U.K. operations. As of March 31, 2018, borrowings outstanding under these facilities totaled $149.6 million. Annual interest rates charged on borrowings outstanding under these facilities, after the grace period of zero to 30 days, ranged from 1.25% to 3.95%. The Company has credit facilities with financial institutions in Brazil, most of which are affiliated with the manufacturers, for the financing of new, used and rental vehicle inventories related to its Brazilian operations. As of March 31, 2018, borrowings outstanding under these facilities totaled $22.8 million. Annual interest rates charged on borrowings outstanding under these facilities, after the grace period of zero to 90 days, ranged from 10.92% to 16.77%. Excluding rental vehicles financed through the Revolving Credit Facility, financing for U.S. rental vehicles is typically obtained directly from the automobile manufacturers. As of March 31, 2018, borrowings outstanding under these rental vehicle facilities totaled $116.0 million, with interest rates that vary up to 6.25%.

CREDIT FACILITIES

In the U.S., the Company has a $1.8 billion revolving syndicated credit arrangement that matures on June 17, 2021 and is comprised of 24 financial institutions, including six manufacturer-affiliated finance companies (“Revolving Credit Facility”), consisting of two tranches. The borrowing capacity of the Revolving Credit Facility can be allocated between the two tranches, subject to certain limits. For U.S. vehicle inventory floorplan financing, the Revolving Credit Facility provides a maximum of $1.75 billion (“Floorplan Line”) and, for working capital and general corporate purposes (including acquisitions), the Revolving Credit Facility provides a maximum of $360.0 million and a minimum of $50.0 million (“Acquisition Line”). The Company also has a $300.0 million floorplan financing arrangement (“FMCC Facility”) with Ford Motor Credit Company (“FMCC”) for financing of new Ford vehicles in the U.S. and other floorplan financing arrangements with several other automobile manufacturers for financing of a portion of its U.S. rental vehicle inventory. Within the Company's Consolidated Balance Sheets, Floorplan notes payable - credit facility and other primarily reflects amounts payable for the purchase of specific new, used and rental vehicle inventory (with the exception of new and rental vehicle purchases financed through lenders affiliated with the respective manufacturer) whereby financing is provided by the Revolving Credit Facility. Floorplan notes payable - manufacturer affiliates reflects amounts related to the purchase of vehicles whereby financing is provided by the FMCC Facility, the financing of a portion of the Company's rental vehicles in the U.S. (through lenders affiliated with the respective manufacturer), as well as the financing of new, used, and rental vehicles with manufacturer affiliates in both the U.K. and Brazil. Payments on the floorplan notes payable are generally due as the vehicles are sold. As a result, these obligations are reflected in the accompanying Consolidated Balance Sheets as current liabilities.

Revolving Credit Facility

After considering the outstanding balance of $1,087.0 million at March 31, 2018, the Company had $353.0 million of available floorplan borrowing capacity under the Floorplan Line. Included in the $353.0 million available borrowings under the Floorplan Line was $74.4 million of immediately available funds. The weighted average interest rate on the Floorplan Line was 3.0% and 2.7% as of March 31, 2018 and December 31, 2017, respectively, excluding the impact of the Company’s interest rate derivative instruments. With regards to the Acquisition Line, there were $28.0 million borrowings outstanding as of March 31, 2018 and $27.0 million borrowings outstanding as of December 31, 2017, both of which consisted entirely of borrowings in British pound sterling. The interest rate on the Acquisition Line was 2.25% as of March 31, 2018, representing the applicable rate for borrowings in British pound sterling. After considering $25.0 million of outstanding letters of credit and other factors included in the Company’s available borrowing base calculation, there was $307.5 million of available borrowing capacity under the Acquisition Line as of March 31, 2018. The amount of available borrowing capacity under the Acquisition Line is limited from time to time based upon certain debt covenants.

The Revolving Credit Facility contains a number of significant covenants that, among other things, restrict the Company’s ability to make disbursements outside of the ordinary course of business, dispose of assets, incur additional indebtedness, create liens on assets, make investments and engage in mergers or consolidations. The Company is also required to comply with specified financial tests and ratios defined in the Revolving Credit Facility, such as the fixed charge coverage and total adjusted leverage ratios. Further, the Revolving Credit Facility restricts the Company’s ability to make certain payments, such as dividends or other distributions of assets, properties, cash, rights, obligations or securities (“Restricted Payments”). The Restricted Payments cannot exceed the sum of $208.5 million plus (or minus if negative) (a) one-half of the aggregate consolidated net income for the period beginning on April 1, 2014 and ending on the date of determination and (b) the amount of net cash proceeds received from the sale of capital stock after June 2, 2014 and ending on the date of determination less (c) cash dividends and share repurchases after June 2, 2014 (“Credit Facility Restricted Payment Basket”). For purposes of the calculation of the Credit Facility Restricted Payment Basket, net income represents such amounts per the Consolidated Financial Statements adjusted to exclude the Company’s foreign operations, non-cash interest expense, non-cash asset impairment charges, and non-cash stock-based compensation. As of March 31, 2018, the Credit Facility Restricted Payment Basket totaled $186.6 million. The Company was in compliance with all applicable covenants and ratios under the Revolving Credit Facility as of March 31, 2018. All of the U.S. dealership-owning subsidiaries are co-borrowers under the Revolving Credit Facility. The Company's obligations under the Revolving Credit Facility are secured by essentially all of the Company's U.S. personal property (other than equity interests in dealership-owning subsidiaries), including all motor vehicle inventory and proceeds from the disposition of dealership-owning subsidiaries, excluding inventory financed directly with manufacturer-affiliates and other third-party financial institutions.

Ford Motor Credit Company Facility

As of March 31, 2018, the Company had an outstanding balance of $146.3 million under the FMCC Facility with an available floorplan borrowing capacity of $153.7 million. Included in the $153.7 million available borrowings under the FMCC Facility was $24.0 million of immediately available funds. This facility bears interest at a rate of Prime plus 150 basis points minus certain incentives. The interest rate on the FMCC Facility was 6.25% before considering the applicable incentives as of March 31, 2018.

Other Credit Facilities

The Company has credit facilities with financial institutions in the U.K., most of which are affiliated with the manufacturers, for financing new, used and rental vehicle inventories related to its U.K. operations. As of March 31, 2018, borrowings outstanding under these facilities totaled $149.6 million. Annual interest rates charged on borrowings outstanding under these facilities, after the grace period of zero to 30 days, ranged from 1.25% to 3.95%.

The Company has credit facilities with financial institutions in Brazil, most of which are affiliated with the manufacturers, for the financing of new, used and rental vehicle inventories related to its Brazilian operations. As of March 31, 2018, borrowings outstanding under these facilities totaled $22.8 million. Annual interest rates charged on borrowings outstanding under these facilities, after the grace period of zero to 90 days, ranged from 10.92% to 16.77%.

Excluding rental vehicles financed through the Revolving Credit Facility, financing for U.S. rental vehicles is typically obtained directly from the automobile manufacturers. As of March 31, 2018, borrowings outstanding under these rental vehicle facilities totaled $116.0 million, with interest rates that vary up to 6.25%.