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v2.4.1.9

Condensed Consolidated Financial Information Condensed Consolidated Income Statement (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
Revenues | $ 2,432,854 us-gaap_Revenues | $ 2,260,863 us-gaap_Revenues
Cost of Goods and Services Sold | 2,068,970 us-gaap_CostOfGoodsAndServicesSold | 1,922,741 us-gaap_CostOfGoodsAndServicesSold
GROSS PROFIT | 363,884 us-gaap_GrossProfit | 338,122 us-gaap_GrossProfit
Selling, General and Administrative Expense | 271,469 us-gaap_SellingGeneralAndAdministrativeExpense | 257,558 us-gaap_SellingGeneralAndAdministrativeExpense
Depreciation, Depletion and Amortization | 11,684 us-gaap_DepreciationDepletionAndAmortization | 9,925 us-gaap_DepreciationDepletionAndAmortization
INCOME FROM OPERATIONS | 80,731 us-gaap_OperatingIncomeLoss | 70,639 us-gaap_OperatingIncomeLoss
Floor Plan Interest Expense | (9,348)gpi_FloorPlanInterestExpense | (10,913)gpi_FloorPlanInterestExpense
Interest Expense, Other | (13,911)us-gaap_InterestExpenseOther | (10,513)us-gaap_InterestExpenseOther
INCOME BEFORE INCOME TAXES | 57,472 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 49,213 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Income Tax Expense (Benefit) | 21,657 us-gaap_IncomeTaxExpenseBenefit | 17,910 us-gaap_IncomeTaxExpenseBenefit
Income (Loss) from Subsidiaries, Net of Tax | 0 us-gaap_IncomeLossFromSubsidiariesNetOfTax | 0 us-gaap_IncomeLossFromSubsidiariesNetOfTax
NET INCOME | 35,815 us-gaap_NetIncomeLoss | 31,303 us-gaap_NetIncomeLoss
Other Comprehensive Income (Loss), Net of Tax | (35,140)us-gaap_OtherComprehensiveIncomeLossNetOfTax | 7,435 us-gaap_OtherComprehensiveIncomeLossNetOfTax
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | 675 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest | 38,738 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
Parent Company [Member] |  |
Revenues | 0 us-gaap_Revenues / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_Revenues / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
Cost of Goods and Services Sold | 0 us-gaap_CostOfGoodsAndServicesSold / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_CostOfGoodsAndServicesSold / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
GROSS PROFIT | 0 us-gaap_GrossProfit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_GrossProfit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
Selling, General and Administrative Expense | 1,231 us-gaap_SellingGeneralAndAdministrativeExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 842 us-gaap_SellingGeneralAndAdministrativeExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
Depreciation, Depletion and Amortization | 0 us-gaap_DepreciationDepletionAndAmortization / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_DepreciationDepletionAndAmortization / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
INCOME FROM OPERATIONS | (1,231)us-gaap_OperatingIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | (842)us-gaap_OperatingIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
Floor Plan Interest Expense | 0 gpi_FloorPlanInterestExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 gpi_FloorPlanInterestExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
Interest Expense, Other | 592 us-gaap_InterestExpenseOther / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 565 us-gaap_InterestExpenseOther / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
INCOME BEFORE INCOME TAXES | (639)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | (277)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
Income Tax Expense (Benefit) | (240)us-gaap_IncomeTaxExpenseBenefit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | (103)us-gaap_IncomeTaxExpenseBenefit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
Income (Loss) from Subsidiaries, Net of Tax | 36,214 us-gaap_IncomeLossFromSubsidiariesNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 31,477 us-gaap_IncomeLossFromSubsidiariesNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
NET INCOME | 35,815 us-gaap_NetIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 31,303 us-gaap_NetIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
Other Comprehensive Income (Loss), Net of Tax | 0 us-gaap_OtherComprehensiveIncomeLossNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_OtherComprehensiveIncomeLossNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | 35,815 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 31,303 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
Guarantor Subsidiaries [Member] |  |
Revenues | 1,998,500 us-gaap_Revenues / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 1,834,627 us-gaap_Revenues / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
Cost of Goods and Services Sold | 1,684,012 us-gaap_CostOfGoodsAndServicesSold / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 1,544,895 us-gaap_CostOfGoodsAndServicesSold / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
GROSS PROFIT | 314,488 us-gaap_GrossProfit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 289,732 us-gaap_GrossProfit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
Selling, General and Administrative Expense | 227,472 us-gaap_SellingGeneralAndAdministrativeExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 214,658 us-gaap_SellingGeneralAndAdministrativeExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
Depreciation, Depletion and Amortization | 10,118 us-gaap_DepreciationDepletionAndAmortization / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 8,626 us-gaap_DepreciationDepletionAndAmortization / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
INCOME FROM OPERATIONS | 76,898 us-gaap_OperatingIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 66,448 us-gaap_OperatingIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
Floor Plan Interest Expense | (8,519)gpi_FloorPlanInterestExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | (8,584)gpi_FloorPlanInterestExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
Interest Expense, Other | (12,723)us-gaap_InterestExpenseOther / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | (10,264)us-gaap_InterestExpenseOther / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
INCOME BEFORE INCOME TAXES | 55,656 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 47,600 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
Income Tax Expense (Benefit) | 20,602 us-gaap_IncomeTaxExpenseBenefit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 16,931 us-gaap_IncomeTaxExpenseBenefit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
Income (Loss) from Subsidiaries, Net of Tax | 0 us-gaap_IncomeLossFromSubsidiariesNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 0 us-gaap_IncomeLossFromSubsidiariesNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
NET INCOME | 35,054 us-gaap_NetIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 30,669 us-gaap_NetIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
Other Comprehensive Income (Loss), Net of Tax | (4,546)us-gaap_OtherComprehensiveIncomeLossNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | (780)us-gaap_OtherComprehensiveIncomeLossNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | 30,508 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 29,889 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
Non-Guarantor Subsidiaries [Member] |  |
Revenues | 434,354 us-gaap_Revenues / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 426,236 us-gaap_Revenues / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
Cost of Goods and Services Sold | 384,958 us-gaap_CostOfGoodsAndServicesSold / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 377,846 us-gaap_CostOfGoodsAndServicesSold / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
GROSS PROFIT | 49,396 us-gaap_GrossProfit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 48,390 us-gaap_GrossProfit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
Selling, General and Administrative Expense | 42,766 us-gaap_SellingGeneralAndAdministrativeExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 42,058 us-gaap_SellingGeneralAndAdministrativeExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
Depreciation, Depletion and Amortization | 1,566 us-gaap_DepreciationDepletionAndAmortization / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 1,299 us-gaap_DepreciationDepletionAndAmortization / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
INCOME FROM OPERATIONS | 5,064 us-gaap_OperatingIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 5,033 us-gaap_OperatingIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
Floor Plan Interest Expense | (829)gpi_FloorPlanInterestExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | (2,329)gpi_FloorPlanInterestExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
Interest Expense, Other | (1,780)us-gaap_InterestExpenseOther / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | (814)us-gaap_InterestExpenseOther / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
INCOME BEFORE INCOME TAXES | 2,455 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 1,890 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
Income Tax Expense (Benefit) | 1,295 us-gaap_IncomeTaxExpenseBenefit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 1,082 us-gaap_IncomeTaxExpenseBenefit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
Income (Loss) from Subsidiaries, Net of Tax | 0 us-gaap_IncomeLossFromSubsidiariesNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_IncomeLossFromSubsidiariesNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
NET INCOME | 1,160 us-gaap_NetIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 808 us-gaap_NetIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
Other Comprehensive Income (Loss), Net of Tax | (30,594)us-gaap_OtherComprehensiveIncomeLossNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 8,215 us-gaap_OtherComprehensiveIncomeLossNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | (29,434)us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 9,023 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
Consolidation, Eliminations [Member] |  |
Revenues | 0 us-gaap_Revenues / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_Revenues / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember
Cost of Goods and Services Sold | 0 us-gaap_CostOfGoodsAndServicesSold / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_CostOfGoodsAndServicesSold / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember
GROSS PROFIT | 0 us-gaap_GrossProfit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_GrossProfit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember
Selling, General and Administrative Expense | 0 us-gaap_SellingGeneralAndAdministrativeExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_SellingGeneralAndAdministrativeExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember
Depreciation, Depletion and Amortization | 0 us-gaap_DepreciationDepletionAndAmortization / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_DepreciationDepletionAndAmortization / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember
INCOME FROM OPERATIONS | 0 us-gaap_OperatingIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_OperatingIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember
Floor Plan Interest Expense | 0 gpi_FloorPlanInterestExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 gpi_FloorPlanInterestExpense / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember
Interest Expense, Other | 0 us-gaap_InterestExpenseOther / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_InterestExpenseOther / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember
INCOME BEFORE INCOME TAXES | 0 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember
Income Tax Expense (Benefit) | 0 us-gaap_IncomeTaxExpenseBenefit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_IncomeTaxExpenseBenefit / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember
Income (Loss) from Subsidiaries, Net of Tax | (36,214)us-gaap_IncomeLossFromSubsidiariesNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | (31,477)us-gaap_IncomeLossFromSubsidiariesNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember
NET INCOME | (36,214)us-gaap_NetIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | (31,477)us-gaap_NetIncomeLoss / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember
Other Comprehensive Income (Loss), Net of Tax | 0 us-gaap_OtherComprehensiveIncomeLossNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_OtherComprehensiveIncomeLossNetOfTax / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | $ (36,214)us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | $ (31,477)us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember

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- Definition Interest expense incurred on borrowings under the floorplan line of the credit facility and arrangements with vehicle manufacturer affiliates for the financing of specific new, used and rental vehicle inventory. Interest expense also includes the net impact of interest rate swap settlements during the period, which are designed to hedge exposure to variable interest rates. + References No definition available. + Details
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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=31814832&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 + Details
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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 2 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1,2) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Amount after tax of income (loss) of subsidiary attributable to the parent entity. + References No definition available. + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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