Acquisitions and Dispositions	12 Months Ended
Dec. 31, 2017
Acquisitions and Dispositions [Abstract]
Mergers, Acquisitions and Dispositions Disclosures [Text Block]	ACQUISITIONS AND DISPOSITIONS During the twelve months ended December 31, 2017, the Company acquired 12 U.K. dealerships, inclusive of 14 franchises, and opened one additional dealership for one awarded franchise in the U.K. In addition, the Company acquired three dealerships in the U.S., inclusive of four franchises, opened one dealership for one awarded franchise in the U.S. and added motorcycles to an existing BMW dealership in Brazil. Aggregate consideration paid for these dealerships totaled $120.3 million, including the associated real estate and goodwill, as well as $11.2 million of cash received in the acquisition of the dealerships. The purchase prices have been allocated based upon the consideration paid and the estimated fair values of the assets acquired and liabilities assumed at the acquisition dates. The allocation of the purchase prices is preliminary and based on estimates and assumptions that are subject to change within the purchase price allocation periods (generally one year from the respective acquisition date). In addition, during the twelve months ended December 31, 2017, the Company disposed of three dealerships: two in Brazil representing two franchises and one in the U.K. representing one franchise. During the twelve months ended December 31, 2016, the Company acquired 12 U.K. dealerships, inclusive of 15 franchises, and opened two additional dealerships for two awarded franchises in the U.K. The Company also acquired one dealership in Brazil, representing one franchise, and opened two additional dealerships in Brazil representing one acquired and two previously awarded franchises. Aggregate consideration paid for these dealerships totaled $61.2 million, including the associated real estate and goodwill, as well as $3.9 million of cash received in the acquisition of the dealerships. The purchase prices were allocated based upon the consideration paid and the estimated fair values of the assets acquired and liabilities assumed at the acquisition dates. In addition, during the twelve months ended December 31, 2016, the Company disposed of ten franchises: five in the U.S., four in Brazil and one in the U.K. Primarily as a result of these U.S., Brazil and U.K. dealership dispositions, a net pre-tax gain of $2.7 million and net pretax losses of $0.8 million and $0.3 million, respectively, were recognized for the twelve months ended December 31, 2016.

ACQUISITIONS AND DISPOSITIONS

During the twelve months ended December 31, 2017, the Company acquired 12 U.K. dealerships, inclusive of 14 franchises, and opened one additional dealership for one awarded franchise in the U.K. In addition, the Company acquired three dealerships in the U.S., inclusive of four franchises, opened one dealership for one awarded franchise in the U.S. and added motorcycles to an existing BMW dealership in Brazil. Aggregate consideration paid for these dealerships totaled $120.3 million, including the associated real estate and goodwill, as well as $11.2 million of cash received in the acquisition of the dealerships. The purchase prices have been allocated based upon the consideration paid and the estimated fair values of the assets acquired and liabilities assumed at the acquisition dates. The allocation of the purchase prices is preliminary and based on estimates and assumptions that are subject to change within the purchase price allocation periods (generally one year from the respective acquisition date). In addition, during the twelve months ended December 31, 2017, the Company disposed of three dealerships: two in Brazil representing two franchises and one in the U.K. representing one franchise.

During the twelve months ended December 31, 2016, the Company acquired 12 U.K. dealerships, inclusive of 15 franchises, and opened two additional dealerships for two awarded franchises in the U.K. The Company also acquired one dealership in Brazil, representing one franchise, and opened two additional dealerships in Brazil representing one acquired and two previously awarded franchises. Aggregate consideration paid for these dealerships totaled $61.2 million, including the associated real estate and goodwill, as well as $3.9 million of cash received in the acquisition of the dealerships. The purchase prices were allocated based upon the consideration paid and the estimated fair values of the assets acquired and liabilities assumed at the acquisition dates. In addition, during the twelve months ended December 31, 2016, the Company disposed of ten franchises: five in the U.S., four in Brazil and one in the U.K. Primarily as a result of these U.S., Brazil and U.K. dealership dispositions, a net pre-tax gain of $2.7 million and net pretax losses of $0.8 million and $0.3 million, respectively, were recognized for the twelve months ended December 31, 2016.