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Credit Facilities (Details Textual) (USD $) |  |  | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended |  | 3 Months Ended |  | 6 Months Ended |  | 3 Months Ended |  |  | 6 Months Ended |
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Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2014 Brazil Credit Facilities [Member] Maximum [Member] | Jun. 30, 2014 Brazil Credit Facilities [Member] Minimum [Member] | Jun. 30, 2014 FMCC Facility [Member] | Jun. 30, 2014 FMCC Facility [Member] | Jun. 30, 2014 Revolving Credit Facility [Member] loan | Jun. 30, 2013 Revolving Credit Facility [Member] | Jun. 30, 2014 Revolving Credit Facility [Member] Acquisition Line [Member] | Dec. 31, 2013 Revolving Credit Facility [Member] Acquisition Line [Member] | Jun. 30, 2014 Revolving Credit Facility [Member] Acquisition Line [Member] Maximum [Member] | Jun. 30, 2014 Revolving Credit Facility [Member] Acquisition Line [Member] Minimum [Member] | Jun. 30, 2014 Revolving Credit Facility [Member] Acquisition Line [Member] United States of America, Dollars | Jun. 30, 2014 Revolving Credit Facility [Member] Acquisition Line [Member] United States of America, Dollars Maximum [Member] | Jun. 30, 2014 Revolving Credit Facility [Member] Acquisition Line [Member] United States of America, Dollars Minimum [Member] | Jun. 30, 2014 Revolving Credit Facility [Member] Acquisition Line [Member] Euros or Pound Sterling [Member] Maximum [Member] | Jun. 30, 2014 Revolving Credit Facility [Member] Acquisition Line [Member] Euros or Pound Sterling [Member] Minimum [Member] | Jun. 30, 2014 Revolving Credit Facility [Member] Acquisition Line [Member] United Kingdom, Pounds | Jun. 30, 2014 Revolving Credit Facility [Member] Floorplan Line [Member] | Dec. 31, 2013 Revolving Credit Facility [Member] Floorplan Line [Member] | Jun. 30, 2014 Revolving Credit Facility [Member] Floorplan Line [Member] Maximum [Member] | Jun. 30, 2014 Revolving Credit Facility [Member] Floorplan Line [Member] Used Vehicle [Member] | Jun. 30, 2014 Revolving Credit Facility [Member] Floorplan Line [Member] New Vehicle [Member] | Jun. 30, 2014 Rental Vehicle Credit Facility [Member] | Jun. 30, 2014 UK Credit Facilities [Member] Maximum [Member] | Jun. 30, 2014 UK Credit Facilities [Member] Minimum [Member]
Credit Facility (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  | 1.50% |  |  | 1.50% |  |  |  |  | 1.00% | 0.00% | 2.50% | 1.50% |  |  |  |  | 1.50% | 1.25% |  |  |
Maximum borrowing capacity under line of credit facility |  |  |  |  | $ 300,000,000 | $ 300,000,000 | $ 1,700,000,000 | $ 1,350,000,000 |  |  | $ 320,000,000 | $ 100,000,000 |  |  |  | $ 125,000,000 |  |  |  |  | $ 1,600,000,000 |  |  |  |  |
Line of credit facility, increase in borrowing capacity |  |  |  |  | 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of financial institution |  |  |  |  |  |  | 25 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Manufacturer-affiliated finance companies |  |  |  |  |  |  | 6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expiry date of Revolving Credit Facility |  |  |  |  |  |  | Jun. 20, 2018 | Jun. 01, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of tranches |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity can be extended, amount |  |  |  |  |  |  | 1,950,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitment fees, Percentage |  |  |  |  |  |  |  |  |  |  | 0.45% | 0.25% |  |  |  |  |  |  | 0.20% |  |  |  |  |  |  |
Acquisition Line Minimum Commitment |  |  |  |  |  |  | 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, unamortized cost |  |  |  |  |  |  | 6,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Amount Outstanding |  |  |  |  | 174,700,000 | 174,700,000 |  |  | 20,457,000 | 60,000,000 |  |  | 20,500,000 |  |  |  |  | 12,000,000 | 1,042,300,000 |  |  |  |  |  |  |
Available amount under borrowing capacity |  |  |  |  | 125,300,000 | 125,300,000 |  |  | 220,800,000 |  |  |  |  |  |  |  |  |  | 337,700,000 |  |  |  |  |  |  |
Floorplan Offset | (64,614,000) | (56,198,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (64,614,000) |  |  |  |  |  |  |
Weighted average interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.40% | 1.40% |  |  |  |  |  |
Maximum period for outstanding borrowing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year 0 months 0 days |  |  |  |  |  |  |
Letters of credit outstanding |  |  |  |  |  |  |  |  | 43,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted payment |  |  |  |  |  |  | $ 167,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum Limit of Restricted Payment |  |  |  |  |  |  | $125.0 million plus (or minus if negative) (a) one-half of the aggregate consolidated net income for the period beginning on January 1, 2013 and ending on the date of determination and (b) the amount of net cash proceeds received from the sale of capital stock on or after January 1, 2013 and ending on the date of determination less (c) cash dividends and share repurchases (“Restricted Payment Basket”) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cancellation of agreement |  |  |  |  | 0 years 0 months 30 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt interest rate |  |  | 19.56% | 15.10% | 4.75% | 4.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.75% | 3.95% | 1.14%
Debt Instrument Maturity Date Period |  |  | 12 months | 1 month |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition Acquisition line minimum commitment. + References No definition available. + Details
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X
- Details
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- Definition Debt Instrument Maturity Date Period + References No definition available. + Details
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- Definition Floorplan offset. + References No definition available. + Details
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- Definition Line of credit facility, increase in borrowing capacity + References No definition available. + Details
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- Definition Line of credit facility, maximum borrowing capacity can be extended, amount. + References No definition available. + Details
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- Definition Line of credit facility, unamortized cost. + References No definition available. + Details
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- Definition Maximum limit of restricted payment. + References No definition available. + Details
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- Definition Maximum period for outstanding borrowing. + References No definition available. + Details
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- Definition Number of days related to cancellation of contract. + References No definition available. + Details
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- Definition Number of financial institutions. + References No definition available. + Details
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- Definition Number of Manufacturer-affiliated finance companies. + References No definition available. + Details
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- Definition Number of tranches + References No definition available. + Details
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- Definition Restricted payment. + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Weighted average interest rate of debt outstanding. + References No definition available. + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Date the credit facility terminates, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The effective interest rate at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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