XML 20 R57.htm IDEA: XBRL DOCUMENT v2.4.1.9
Long-Term Debt (Details Textual)
 3 Months Ended 3 Months Ended 3 Months Ended
Mar. 31, 2015
USD ($)
Mar. 31, 2014
USD ($)
Dec. 31, 2014
USD ($)
Mar. 31, 2015
Capital Lease Obligations [Member]
Mar. 31, 2015
5.00% Senior Note [Member]
USD ($)
Sep. 30, 2014
5.00% Senior Note [Member]
USD ($)
Dec. 31, 2014
5.00% Senior Note [Member]
USD ($)
Jun. 30, 2014
5.00% Senior Note [Member]
USD ($)
Mar. 31, 2015
Other Real Estate Related Long Term Debt [Member]
USD ($)
Dec. 31, 2014
Other Real Estate Related Long Term Debt [Member]
USD ($)
Mar. 31, 2015
2.25% Convertible Senior Notes due 2036 [Member]
Mar. 31, 2015
Two Point Two Five Percent Warrants [Member]
Mar. 31, 2015
Three Point Zero Zero Percent Notes [Member]
Mar. 31, 2015
3.00% Warrants [Member]
Mar. 31, 2015
Real Estate Related Debt [Member]
USD ($)
Mar. 31, 2015
Real Estate Related Debt [Member]
Minimum [Member]
Mar. 31, 2015
Real Estate Related Debt [Member]
Maximum [Member]
Mar. 31, 2015
Real Estate Related Debt [Member]
Toyota Motor Credit Corporation [Member]
USD ($)
Mar. 31, 2015
Real Estate Related Debt [Member]
Mercedes-Benz Financial Services [Member]
USD ($)
Mar. 31, 2015
Real Estate Related Debt [Member]
BMW Financial Services [Member]
USD ($)
Mar. 31, 2015
Real Estate Related Debt [Member]
Ford Motor Credit Company [Member]
USD ($)
Mar. 31, 2015
Foreign Note [Member]
USD ($)
Mar. 31, 2015
Brazilian third party financial institution [Member]
BRL
Mar. 31, 2015
Third-party financial institution [Member]
USD ($)
Mar. 31, 2015
Third-party financial institution [Member]
Ford Motor Credit Company [Member]
USD ($)
Mar. 31, 2015
Real Estate Credit Facility [Member]
USD ($)
Mar. 31, 2015
Real Estate Credit Facility [Member]
Minimum [Member]
Mar. 31, 2015
Real Estate Credit Facility [Member]
Maximum [Member]
Mar. 31, 2015
London Interbank Offered Rate (LIBOR) [Member]
Real Estate Credit Facility [Member]
Mar. 31, 2015
Federal Funds Rate [Member]
Real Estate Credit Facility [Member]
Mar. 31, 2015
Fixed interest rate debt [Member]
Other Real Estate Related Long Term Debt [Member]
USD ($)
Dec. 31, 2014
Fixed interest rate debt [Member]
Other Real Estate Related Long Term Debt [Member]
USD ($)
Long-term Debt (Textual)                                                                
Debt Instrument, Periodic Payment, Principal                                   $ 500,000us-gaap_DebtInstrumentPeriodicPaymentPrincipal
/ us-gaap_LineOfCreditFacilityAxis
= gpi_ToyotaMotorCreditCorporationMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		                            
Repayments of Long-term Debt                                     300,000us-gaap_RepaymentsOfLongTermDebt
/ us-gaap_LineOfCreditFacilityAxis
= gpi_MercedesBenzFinancialServicesMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		 1,100,000us-gaap_RepaymentsOfLongTermDebt
/ us-gaap_LineOfCreditFacilityAxis
= gpi_BmwFinancialServicesMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		 400,000us-gaap_RepaymentsOfLongTermDebt
/ us-gaap_LineOfCreditFacilityAxis
= gpi_FordMotorCreditCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		 500,000us-gaap_RepaymentsOfLongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= gpi_ForeignNoteMember		   1,500,000us-gaap_RepaymentsOfLongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= gpi_ThirdPartyFinancialInstitutionMember		                
Allocated Underwriter Fees Net Of Taxes         10,400,000gpi_AllocatedUnderwriterFeesNetOfTaxes
/ us-gaap_LongtermDebtTypeAxis
= gpi_A5.00SeniorNoteMember		                                                      
Debt, Weighted Average Interest Rate       9.60%us-gaap_DebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember		                                                        
Amortization period of underwriters fees and debt issuance costs 8 years                                                              
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums         9,600,000us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums
/ us-gaap_LongtermDebtTypeAxis
= gpi_A5.00SeniorNoteMember		                                                      
Long-term Debt, Percentage Bearing Fixed Interest, Amount                 156,600,000us-gaap_LongtermDebtPercentageBearingFixedInterestAmount
/ us-gaap_LongtermDebtTypeAxis
= gpi_OtherRealEstateRelatedLongTermDebtMember		 158,100,000us-gaap_LongtermDebtPercentageBearingFixedInterestAmount
/ us-gaap_LongtermDebtTypeAxis
= gpi_OtherRealEstateRelatedLongTermDebtMember		                                            
Long-term Debt, Fair Value                                                             181,100,000us-gaap_LongTermDebtFairValue
/ gpi_DebtinterestratetypeAxis
= gpi_FixedinterestratedebtMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_OtherRealEstateRelatedLongTermDebtMember		 186,400,000us-gaap_LongTermDebtFairValue
/ gpi_DebtinterestratetypeAxis
= gpi_FixedinterestratedebtMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_OtherRealEstateRelatedLongTermDebtMember
Debt interest rate         5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= gpi_A5.00SeniorNoteMember		           2.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= gpi_A2.25ConvertibleNotesMember		 2.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= gpi_TwoPointTwoFivePercentWarrantsMember		 3.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= gpi_ThreePointZeroZeroPercentNotesMember		 3.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_WarrantMember		                                    
Maturity date of of notes                                   Nov. 01, 2021   Oct. 01, 2021   Sep. 01, 2034                    
Note agreement with a third party financial institution         550,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= gpi_A5.00SeniorNoteMember		   550,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= gpi_A5.00SeniorNoteMember		 350,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= gpi_A5.00SeniorNoteMember		                                                
Additional borrowings of long term debt           200,000,000gpi_Additionalborrowingsoflongtermdebt
/ us-gaap_LongtermDebtTypeAxis
= gpi_A5.00SeniorNoteMember		                                                    
Additional borrowings discount from face value         1.50%gpi_Additionalborrowingsdiscountfromfacevalue
/ us-gaap_LongtermDebtTypeAxis
= gpi_A5.00SeniorNoteMember		                                                      
Term loans provided under credit facility                                               127,200,000gpi_TermLoansUnderRealEstateCreditFacility
/ us-gaap_LongtermDebtTypeAxis
= gpi_ThirdPartyFinancialInstitutionMember		   74,100,000gpi_TermLoansUnderRealEstateCreditFacility
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateCreditFacilityMember		            
Capitalization Of Debt Issuance Costs         2,400,000gpi_CapitalizationOfDebtIssuanceCosts
/ us-gaap_LongtermDebtTypeAxis
= gpi_A5.00SeniorNoteMember		                   1,300,000gpi_CapitalizationOfDebtIssuanceCosts
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		                     1,100,000gpi_CapitalizationOfDebtIssuanceCosts
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateCreditFacilityMember		            
Amount available to be expanded                                                   99,100,000gpi_MaximumAmountOfTermLoanToBeExpandUnderRealEstateCreditFacility
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateCreditFacilityMember		            
Unamortized debt issuance cost         2,100,000us-gaap_UnamortizedDebtIssuanceExpense
/ us-gaap_LongtermDebtTypeAxis
= gpi_A5.00SeniorNoteMember		                   400,000us-gaap_UnamortizedDebtIssuanceExpense
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		                     300,000us-gaap_UnamortizedDebtIssuanceExpense
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateCreditFacilityMember		            
Interest rate under condition second                                                   0.95%gpi_InterestRateUnderConditionSecond
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateCreditFacilityMember		            
Interest rate under sub-condition three of condition second                                                         1.05%gpi_InterestRateUnderSubConditionThreeOfConditionSecond
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateCreditFacilityMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember		      
Percentage of principal payments to make its quarterly payment                                                   1.25%gpi_PercentageOfQuarterlyPrincipalPaymentsOfOutstandingPrincipal
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateCreditFacilityMember		            
Ending date of installments to be repaid         Jun. 01, 2022                           Jan. 01, 2031   Dec. 01, 2024   Feb. 01, 2017 Nov. 01, 2022     Dec. 29, 2015 Feb. 27, 2017        
Redemption price percentage of principal outstanding and accrued unpaid interest         105.00%gpi_Redemptionpricepercentageofprincipaloutstandingandaccruedunpaidinterest
/ us-gaap_LongtermDebtTypeAxis
= gpi_A5.00SeniorNoteMember		                                                      
Redemption price percentage of principal redeemed         100.00%gpi_Redemptionpricepercentageofprincipalredeemed
/ us-gaap_LongtermDebtTypeAxis
= gpi_A5.00SeniorNoteMember		                                                      
Borrowings under amended and restated mortgage facility                                                   0gpi_BorrowingsUnderAmendedAndRestatedMortgageFacility
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateCreditFacilityMember		            
Principal payments on outstanding borrowings                                                   800,000us-gaap_LineOfCreditFacilityPeriodicPaymentPrincipal
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateCreditFacilityMember		            
Current maturities of long-term debt 69,275,000us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent   72,630,000us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent                             5,100,000us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
/ us-gaap_LineOfCreditFacilityAxis
= gpi_ToyotaMotorCreditCorporationMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		 1,100,000us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
/ us-gaap_LineOfCreditFacilityAxis
= gpi_MercedesBenzFinancialServicesMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		 4,500,000us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
/ us-gaap_LineOfCreditFacilityAxis
= gpi_BmwFinancialServicesMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		   4,500,000us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
/ us-gaap_LongtermDebtTypeAxis
= gpi_ForeignNoteMember		   6,600,000us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
/ us-gaap_LongtermDebtTypeAxis
= gpi_ThirdPartyFinancialInstitutionMember		 1,500,000us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
/ us-gaap_LineOfCreditFacilityAxis
= gpi_FordMotorCreditCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_ThirdPartyFinancialInstitutionMember		 30,900,000us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateCreditFacilityMember		            
Number of manufacturer-affiliated finance partners 4gpi_Numberofmanufactureraffiliatedfinancepartners                                                              
Interest on real estate notes, minimum                             3.00%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		                                  
Interest on real estate notes, maximum                             9.00%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		                                  
Amortization schedule                                   20 years 20 years 15 years 20 years                      
Variable Interest Rate                               1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		 2.55%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		                 2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateCreditFacilityMember		       0.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateCreditFacilityMember
/ us-gaap_VariableRateAxis
= gpi_FederalFundsRateMember		    
Total borrowings                                   49,400,000us-gaap_LongTermDebt
/ us-gaap_LineOfCreditFacilityAxis
= gpi_ToyotaMotorCreditCorporationMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		 27,100,000us-gaap_LongTermDebt
/ us-gaap_LineOfCreditFacilityAxis
= gpi_MercedesBenzFinancialServicesMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		 64,800,000us-gaap_LongTermDebt
/ us-gaap_LineOfCreditFacilityAxis
= gpi_BmwFinancialServicesMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		   60,400,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= gpi_ForeignNoteMember		 38,000,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= gpi_BrazilianthirdpartyfinancialinstitutionMember		 113,600,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= gpi_ThirdPartyFinancialInstitutionMember		 34,700,000us-gaap_LongTermDebt
/ us-gaap_LineOfCreditFacilityAxis
= gpi_FordMotorCreditCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_ThirdPartyFinancialInstitutionMember		 57,200,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateCreditFacilityMember		            
Convertible Debt, Fair Value Disclosures         551,400,000us-gaap_ConvertibleDebtFairValueDisclosures
/ us-gaap_LongtermDebtTypeAxis
= gpi_A5.00SeniorNoteMember		   534,900,000us-gaap_ConvertibleDebtFairValueDisclosures
/ us-gaap_LongtermDebtTypeAxis
= gpi_A5.00SeniorNoteMember		                                                  
Number of loans as per loan agreements                                   8us-gaap_MortgageLoansOnRealEstateNumberOfLoans
/ us-gaap_LineOfCreditFacilityAxis
= gpi_ToyotaMotorCreditCorporationMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		 2us-gaap_MortgageLoansOnRealEstateNumberOfLoans
/ us-gaap_LineOfCreditFacilityAxis
= gpi_MercedesBenzFinancialServicesMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		 14us-gaap_MortgageLoansOnRealEstateNumberOfLoans
/ us-gaap_LineOfCreditFacilityAxis
= gpi_BmwFinancialServicesMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		       19us-gaap_MortgageLoansOnRealEstateNumberOfLoans
/ us-gaap_LongtermDebtTypeAxis
= gpi_ThirdPartyFinancialInstitutionMember		 4us-gaap_MortgageLoansOnRealEstateNumberOfLoans
/ us-gaap_LineOfCreditFacilityAxis
= gpi_FordMotorCreditCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_ThirdPartyFinancialInstitutionMember		              
Borrowings Of Long Term Debt Related To Real Estate Loans $ 17,600,000gpi_BorrowingsOfLongTermDebtRelatedToRealEstateLoans $ 13,855,000gpi_BorrowingsOfLongTermDebtRelatedToRealEstateLoans                               $ 0gpi_BorrowingsOfLongTermDebtRelatedToRealEstateLoans
/ us-gaap_LineOfCreditFacilityAxis
= gpi_ToyotaMotorCreditCorporationMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		 $ 0gpi_BorrowingsOfLongTermDebtRelatedToRealEstateLoans
/ us-gaap_LineOfCreditFacilityAxis
= gpi_MercedesBenzFinancialServicesMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		 $ 0gpi_BorrowingsOfLongTermDebtRelatedToRealEstateLoans
/ us-gaap_LineOfCreditFacilityAxis
= gpi_BmwFinancialServicesMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_RealEstateRelatedDebtMember		   $ 17,400,000gpi_BorrowingsOfLongTermDebtRelatedToRealEstateLoans
/ us-gaap_LongtermDebtTypeAxis
= gpi_ForeignNoteMember		   $ 0gpi_BorrowingsOfLongTermDebtRelatedToRealEstateLoans
/ us-gaap_LongtermDebtTypeAxis
= gpi_ThirdPartyFinancialInstitutionMember		 $ 0gpi_BorrowingsOfLongTermDebtRelatedToRealEstateLoans
/ us-gaap_LineOfCreditFacilityAxis
= gpi_FordMotorCreditCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= gpi_ThirdPartyFinancialInstitutionMember		              
Lease Expiration Date Jun. 01, 2034