Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Details Textual)

v2.4.0.6
Commitments and Contingencies (Details Textual) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Options
Convenants
Dec. 31, 2011
Dec. 31, 2010
Commitments and Contingencies (Textual) [Abstract]      
Lease exit expense $ 4.3    
Lease exit accrued cost 1.1    
Remaining lease exit expense 3.2    
Component of lease exit expense in interest expense, other, net 0.4    
Component of lease exit expense in selling, general and administrative expenses 0.4    
Component of lease exit expense in income (loss) from operations and the sale of dealerships 4.3    
Component of lease exit payments in selling, general and administrative expenses 1.3    
Component of lease exit payments in income (loss) from operations and the sale of dealerships 7.4    
Operating lease term for dealership facilities, minimum 15 years    
Operating lease term for dealership facilities, maximum 20 years    
Operating lease Number of renewal options, minimum 1    
Amended subordination and guarantee agreement number of additional covenants 2    
Operating lease number of renewal options, maximum 2    
Operating lease period of renewal options 10 years    
Percentage of lease facility based on capitalization rates 20.00%    
Lease expense for continuing operation 102.4 103.2 106.0
Lease expense for discontinuing operation 6.2 5.7 9.5
Leases, net contingent rent benefit related to decrease in interest rates from continuing operation 2.4 2.4 2.4
Leases Net Contingent Rent Benefit Related to Decrease in Interest Rates from Discontinuing Operation 0.5 0.5 0.5
Obligations under subleases, if subleases do not perform 113.9    
Estimated minimum lease payment 9.1    
Maximum exposure associated with general indemnifications 23.8    
General Indemnifications Minimum Expiration Period 1 year    
General Indemnifications Maximum Expiration Period 2 years    
Period of arbitration, stayed by Arbitrator 30 days    
Amount reserved for pending proceedings   7.3  
Contingent Liability Reserve Balance after reduction $ 3.4