Commitments and Contingencies	12 Months Ended
Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES From time to time, the Company’s dealerships are named in various types of litigation involving customer claims, employment matters, class action claims, purported class action claims, as well as claims involving the manufacturer of automobiles, contractual disputes and other matters arising in the ordinary course of business. Due to the nature of the automotive retailing business, the Company may be involved in legal proceedings or suffer losses that could have a material adverse effect on the Company’s business. In the normal course of business, the Company is required to respond to customer, employee and other third-party complaints. Amounts that have been accrued or paid related to the settlement of litigation are included in SG&A expenses in the Company’s Consolidated Statements of Operations. In addition, the manufacturers of the vehicles that the Company sells and services have audit rights allowing them to review the validity of amounts claimed for incentive, rebate or warranty-related items and charge the Company back for amounts determined to be invalid payments under the manufacturers’ programs, subject to the Company’s right to appeal any such decision. Amounts that have been accrued or paid related to the settlement of manufacturer chargebacks of recognized incentives and rebates are included in cost of sales in the Company’s Consolidated Statements of Operations, while such amounts for manufacturer chargebacks of recognized warranty-related items are included as a reduction of revenues in the Company’s Consolidated Statements of Operations. Legal Proceedings In September 2015, Volkswagen admitted that certain of its diesel models were intentionally programmed to meet various regulatory emissions standards only during laboratory emissions testing. In late June 2016, Volkswagen agreed to pay up to an aggregate of $14.7 billion to settle claims stemming from the diesel emissions scandal, including claims from customers and automotive dealers. In October 2016, a U.S. Federal judge approved this settlement. In September 2016, Volkswagen agreed to allocate $1.2 billion among its 652 dealers for a class settlement in exchange for their agreement not to sue Volkswagen. In October 2016, the Company received notification from Volkswagen that it is entitled to receive, in the aggregate, approximately $13.2 million in connection with the Company's current and prior ownership of seven Volkswagen dealerships in the U.S. segment to date. The Company accepted and executed the offer in the fourth quarter of 2016. As of December 31, 2017, the Company has received half of the aggregate compensation in a lump sum amount and is to receive the remaining half in 18 equal installments, of which 11 payments have been made to date. The Company recognized the entire settlement as an offset to Selling, General and Administrative Expenses in the accompanying Consolidated Statements of Operations for the year ended December 31, 2016. In addition, as a result of Volkswagen’s agreement to repurchase customers’ vehicles in the settlement, the Company identified its potential liability as it relates to chargebacks for finance and insurance products sold by the Company to such customers. So, in conjunction with the recognition of the Company’s settlement with Volkswagen, the Company estimated its liability for these chargebacks and recognized such as an offset to the settlement for the year ended December 31, 2016. The Volkswagen brand represented 2.6% of the Company's total new vehicle retail unit sales for the twelve months ended December 31, 2017. Also, in conjunction with the Volkswagen diesel emissions scandal, Volkswagen agreed in March 2017 to settle allegations of damages by the Company relative to its three Audi branded dealerships. The Company received the cash and recognized the settlement as an offset to SG&A in the accompanying Consolidated Statements of Operations for the twelve months ended December 31, 2017. Currently, the Company is not party to any legal proceedings that, individually or in the aggregate, are reasonably expected to have a material adverse effect on the Company’s results of operations, financial condition, or cash flows, including class action lawsuits. However, the results of current, or future, matters cannot be predicted with certainty, and an unfavorable resolution of one or more of such matters could have a material adverse effect on the Company’s results of operations, financial condition, or cash flows. Other Matters The Company, acting through its subsidiaries, is the lessee under many real estate leases that provide for the use by the Company’s subsidiaries of their respective dealership premises. Pursuant to these leases, the Company’s subsidiaries generally agree to indemnify the lessor and other parties from certain liabilities arising as a result of the use of the leased premises, including environmental liabilities, or a breach of the lease by the lessee. Additionally, from time to time, the Company enters into agreements in connection with the sale of assets or businesses in which it agrees to indemnify the purchaser, or other parties, from certain liabilities or costs arising in connection with the assets or business. Also, in the ordinary course of business in connection with purchases or sales of goods and services, the Company enters into agreements that may contain indemnification provisions. In the event that an indemnification claim is asserted, liability would be limited by the terms of the applicable agreement. From time to time, primarily in connection with dealership dispositions, the Company’s subsidiaries sublet to the dealership purchaser the subsidiaries’ interests in any real property leases associated with such dealerships and continue to be primarily obligated on the lease. In these situations, the Company’s subsidiaries retain primary responsibility for the performance of certain obligations under such leases. To the extent that the Company remains primarily responsible under such leases, a quantification of such lease obligations is included in the Company’s disclosure of future minimum lease payments for non-cancelable operating leases in Note 18, “Operating Leases”. In certain instances, also in connection with dealership dispositions, the Company’s subsidiaries assign to the dealership purchaser the subsidiaries’ interests in any real property leases associated with such dealerships. The Company’s subsidiaries may retain secondary responsibility for the performance of certain obligations under such leases to the extent that the assignee does not perform, if such performance is required following the assignment of the lease. Additionally, the Company and its subsidiaries may remain subject to the terms of a guaranty made by the Company and its subsidiaries in connection with such leases. In these circumstances, the Company generally has indemnification rights against the assignee in the event of non-performance under these leases, as well as certain defenses. The Company and its subsidiaries also may be called on to perform other obligations under these leases, such as environmental remediation of the leased premises or repair of the leased premises upon termination of the lease. However, potential environmental liabilities are generally known at the time of the sale of the dealership if not previously remediated. The Company does not have any known material environmental commitments or contingencies and presently has no reason to believe that it or its subsidiaries will be called on to so perform. Although not estimated to be material, the Company’s exposure under these leases is difficult to estimate and there can be no assurance that any performance of the Company or its subsidiaries required under these leases would not have a material adverse effect on the Company’s business, financial condition, or cash flows.

COMMITMENTS AND CONTINGENCIES

From time to time, the Company’s dealerships are named in various types of litigation involving customer claims, employment matters, class action claims, purported class action claims, as well as claims involving the manufacturer of automobiles, contractual disputes and other matters arising in the ordinary course of business. Due to the nature of the automotive retailing business, the Company may be involved in legal proceedings or suffer losses that could have a material adverse effect on the Company’s business. In the normal course of business, the Company is required to respond to customer, employee and other third-party complaints. Amounts that have been accrued or paid related to the settlement of litigation are included in SG&A expenses in the Company’s Consolidated Statements of Operations. In addition, the manufacturers of the vehicles that the Company sells and services have audit rights allowing them to review the validity of amounts claimed for incentive, rebate or warranty-related items and charge the Company back for amounts determined to be invalid payments under the manufacturers’ programs, subject to the Company’s right to appeal any such decision. Amounts that have been accrued or paid related to the settlement of manufacturer chargebacks of recognized incentives and rebates are included in cost of sales in the Company’s Consolidated Statements of Operations, while such amounts for manufacturer chargebacks of recognized warranty-related items are included as a reduction of revenues in the Company’s Consolidated Statements of Operations.

Legal Proceedings

In September 2015, Volkswagen admitted that certain of its diesel models were intentionally programmed to meet various regulatory emissions standards only during laboratory emissions testing. In late June 2016, Volkswagen agreed to pay up to an aggregate of $14.7 billion to settle claims stemming from the diesel emissions scandal, including claims from customers and automotive dealers. In October 2016, a U.S. Federal judge approved this settlement. In September 2016, Volkswagen agreed to allocate $1.2 billion among its 652 dealers for a class settlement in exchange for their agreement not to sue Volkswagen. In October 2016, the Company received notification from Volkswagen that it is entitled to receive, in the aggregate, approximately $13.2 million in connection with the Company's current and prior ownership of seven Volkswagen dealerships in the U.S. segment to date. The Company accepted and executed the offer in the fourth quarter of 2016. As of December 31, 2017, the Company has received half of the aggregate compensation in a lump sum amount and is to receive the remaining half in 18 equal installments, of which 11 payments have been made to date. The Company recognized the entire settlement as an offset to Selling, General and Administrative Expenses in the accompanying Consolidated Statements of Operations for the year ended December 31, 2016. In addition, as a result of Volkswagen’s agreement to repurchase customers’ vehicles in the settlement, the Company identified its potential liability as it relates to chargebacks for finance and insurance products sold by the Company to such customers. So, in conjunction with the recognition of the Company’s settlement with Volkswagen, the Company estimated its liability for these chargebacks and recognized such as an offset to the settlement for the year ended December 31, 2016. The Volkswagen brand represented 2.6% of the Company's total new vehicle retail unit sales for the twelve months ended December 31, 2017. Also, in conjunction with the Volkswagen diesel emissions scandal, Volkswagen agreed in March 2017 to settle allegations of damages by the Company relative to its three Audi branded dealerships. The Company received the cash and recognized the settlement as an offset to SG&A in the accompanying Consolidated Statements of Operations for the twelve months ended December 31, 2017.

Currently, the Company is not party to any legal proceedings that, individually or in the aggregate, are reasonably expected to have a material adverse effect on the Company’s results of operations, financial condition, or cash flows, including class action lawsuits. However, the results of current, or future, matters cannot be predicted with certainty, and an unfavorable resolution of one or more of such matters could have a material adverse effect on the Company’s results of operations, financial condition, or cash flows.

Other Matters

The Company, acting through its subsidiaries, is the lessee under many real estate leases that provide for the use by the Company’s subsidiaries of their respective dealership premises. Pursuant to these leases, the Company’s subsidiaries generally agree to indemnify the lessor and other parties from certain liabilities arising as a result of the use of the leased premises, including environmental liabilities, or a breach of the lease by the lessee. Additionally, from time to time, the Company enters into agreements in connection with the sale of assets or businesses in which it agrees to indemnify the purchaser, or other parties, from certain liabilities or costs arising in connection with the assets or business. Also, in the ordinary course of business in connection with purchases or sales of goods and services, the Company enters into agreements that may contain indemnification provisions. In the event that an indemnification claim is asserted, liability would be limited by the terms of the applicable agreement.

From time to time, primarily in connection with dealership dispositions, the Company’s subsidiaries sublet to the dealership purchaser the subsidiaries’ interests in any real property leases associated with such dealerships and continue to be primarily obligated on the lease. In these situations, the Company’s subsidiaries retain primary responsibility for the performance of certain obligations under such leases. To the extent that the Company remains primarily responsible under such leases, a quantification of such lease obligations is included in the Company’s disclosure of future minimum lease payments for non-cancelable operating leases in Note 18, “Operating Leases”.

In certain instances, also in connection with dealership dispositions, the Company’s subsidiaries assign to the dealership purchaser the subsidiaries’ interests in any real property leases associated with such dealerships. The Company’s subsidiaries may retain secondary responsibility for the performance of certain obligations under such leases to the extent that the assignee does not perform, if such performance is required following the assignment of the lease. Additionally, the Company and its subsidiaries may remain subject to the terms of a guaranty made by the Company and its subsidiaries in connection with such leases. In these circumstances, the Company generally has indemnification rights against the assignee in the event of non-performance under these leases, as well as certain defenses. The Company and its subsidiaries also may be called on to perform other obligations under these leases, such as environmental remediation of the leased premises or repair of the leased premises upon termination of the lease. However, potential environmental liabilities are generally known at the time of the sale of the dealership if not previously remediated. The Company does not have any known material environmental commitments or contingencies and presently has no reason to believe that it or its subsidiaries will be called on to so perform. Although not estimated to be material, the Company’s exposure under these leases is difficult to estimate and there can be no assurance that any performance of the Company or its subsidiaries required under these leases would not have a material adverse effect on the Company’s business, financial condition, or cash flows.