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v2.4.1.9

Income Taxes (Detail 3) (USD $) | Dec. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013
--- | --- | --- | ---
Net deferred tax liabilities comprised |  |  |
Loss reserves and accruals | $ 50,158,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves | $ 43,451,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves |
Interest rate swaps | 10,745,000 gpi_DeferredTaxAssetsInterestRateSwaps | 8,310,000 gpi_DeferredTaxAssetsInterestRateSwaps |
State net operating loss ("NOL") carryforwards | 16,592,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal | 14,231,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal |
Deferred Tax Assets, Operating Loss Carryforwards, Foreign | 21,770,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign | 13,056,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign |
Deferred Tax Assets, Gross | 99,265,000 us-gaap_DeferredTaxAssetsGross | 98,234,000 us-gaap_DeferredTaxAssetsGross | 2,300,000 us-gaap_DeferredTaxAssetsGross
Valuation allowance on state NOL | (40,486,000)us-gaap_DeferredTaxAssetsValuationAllowance | (28,310,000)us-gaap_DeferredTaxAssetsValuationAllowance |
Deferred Tax Assets, Net of Valuation Allowance | 58,779,000 us-gaap_DeferredTaxAssetsNet | 69,924,000 us-gaap_DeferredTaxAssetsNet |
Goodwill and intangible franchise rights | (138,992,000)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets | (141,384,000)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets |
Depreciation expense | (43,070,000)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment | (39,285,000)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment |
Deferred tax liabilities deferred gain on bond redemption | (2,046,000)gpi_Deferredtaxliabilitiesdeferredgainonbondredemption | 0 gpi_Deferredtaxliabilitiesdeferredgainonbondredemption |
Other | (1,936,000)us-gaap_DeferredTaxLiabilitiesOther | (999,000)us-gaap_DeferredTaxLiabilitiesOther |
Deferred Tax Liabilities, Gross | (186,044,000)us-gaap_DeferredIncomeTaxLiabilities | (199,997,000)us-gaap_DeferredIncomeTaxLiabilities |
Deferred Tax Liabilities, Net, Noncurrent | 202,100,000 us-gaap_DeferredTaxLiabilitiesNoncurrent | 216,200,000 us-gaap_DeferredTaxLiabilitiesNoncurrent |
Net deferred tax liability | (127,265,000)us-gaap_DeferredTaxAssetsLiabilitiesNet | (130,073,000)us-gaap_DeferredTaxAssetsLiabilitiesNet |
2.25% Notes [Member] |  |  |
Net deferred tax liabilities comprised |  |  |
Convertible Debt | 0 gpi_DeferredTaxAssetsConvertibleNoteHedge / us-gaap_LongtermDebtTypeAxis = gpi_TwoPointTwoFivePercentNotesMember | 6,639,000 gpi_DeferredTaxAssetsConvertibleNoteHedge / us-gaap_LongtermDebtTypeAxis = gpi_TwoPointTwoFivePercentNotesMember |
Discount on deferred tax assets | 0 gpi_DeferredTaxLiabilitiesDiscountOnConvertibleNoteHedge / us-gaap_LongtermDebtTypeAxis = gpi_TwoPointTwoFivePercentNotesMember | (7,846,000)gpi_DeferredTaxLiabilitiesDiscountOnConvertibleNoteHedge / us-gaap_LongtermDebtTypeAxis = gpi_TwoPointTwoFivePercentNotesMember |
3.00% Notes [Member] |  |  |
Net deferred tax liabilities comprised |  |  |
Convertible Debt | 0 gpi_DeferredTaxAssetsConvertibleNoteHedge / us-gaap_LongtermDebtTypeAxis = gpi_ThreePointZeroZeroPercentNotesMember | 12,547,000 gpi_DeferredTaxAssetsConvertibleNoteHedge / us-gaap_LongtermDebtTypeAxis = gpi_ThreePointZeroZeroPercentNotesMember |
Discount on deferred tax assets | $ 0 gpi_DeferredTaxLiabilitiesDiscountOnConvertibleNoteHedge / us-gaap_LongtermDebtTypeAxis = gpi_ThreePointZeroZeroPercentNotesMember | $ (10,483,000)gpi_DeferredTaxLiabilitiesDiscountOnConvertibleNoteHedge / us-gaap_LongtermDebtTypeAxis = gpi_ThreePointZeroZeroPercentNotesMember |

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