XML 22 R89.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Condensed Consolidated Financial Information Condensed Consolidated Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | --- | --- | ---
Cash and Cash Equivalents, at Carrying Value | $ 40,975 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 20,215 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 4,650 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 14,895 us-gaap_CashAndCashEquivalentsAtCarryingValue
Contracts In Transit And Vehicle Receivables Net | 237,448 gpi_ContractsInTransitAndVehicleReceivablesNet | 225,156 gpi_ContractsInTransitAndVehicleReceivablesNet |  |
Accounts, Notes, Loans and Financing Receivable, Net, Current | 151,330 us-gaap_AccountsNotesAndLoansReceivableNetCurrent | 135,058 us-gaap_AccountsNotesAndLoansReceivableNetCurrent |  |
Intercompany accounts receivable current | 0 gpi_Intercompanyaccountsreceivablecurrent | 0 gpi_Intercompanyaccountsreceivablecurrent |  |
Inventory, Net | 1,556,705 us-gaap_InventoryNet | 1,542,318 us-gaap_InventoryNet |  |
Deferred Tax Assets, Net, Current | 11,062 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent | 21,150 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent |  |
Prepaid Expense and Other Assets, Current | 37,699 us-gaap_PrepaidExpenseAndOtherAssetsCurrent | 24,041 us-gaap_PrepaidExpenseAndOtherAssetsCurrent |  |
Total current assets | 2,035,219 us-gaap_AssetsCurrent | 1,967,938 us-gaap_AssetsCurrent |  |
Property, Plant and Equipment, Net | 950,388 us-gaap_PropertyPlantAndEquipmentNet | 796,356 us-gaap_PropertyPlantAndEquipmentNet |  |
Goodwill | 830,377 us-gaap_Goodwill | 737,303 us-gaap_Goodwill | 582,384 us-gaap_Goodwill |
Indefinite-Lived Franchise Rights | 303,947 us-gaap_IndefiniteLivedFranchiseRights | 301,505 us-gaap_IndefiniteLivedFranchiseRights |  |
Investment in Subsidiaries | 0 gpi_InvestmentinSubsidiaries | 0 gpi_InvestmentinSubsidiaries |  |
Other Assets, Noncurrent | 21,561 us-gaap_OtherAssetsNoncurrent | 16,376 us-gaap_OtherAssetsNoncurrent |  |
Total assets | 4,141,492 us-gaap_Assets | 3,819,478 us-gaap_Assets |  |
Floorplan Notes Payable Credit Facility Gross | 1,143,246 gpi_FloorplanNotesPayableCreditFacilityGross | 1,143,104 gpi_FloorplanNotesPayableCreditFacilityGross |  |
Floorplan Offset | (39,616)gpi_FloorplanOffset | (56,198)gpi_FloorplanOffset |  |
Floorplan Notes Payable Manufacturer Affiliates | 307,656 gpi_FloorplanNotesPayableManufacturerAffiliates | 346,572 gpi_FloorplanNotesPayableManufacturerAffiliates |  |
FMCC Offset | (22,500)gpi_FMCCOffset | 0 gpi_FMCCOffset |  |
Long-term Debt and Capital Lease Obligations, Current | 72,630 us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent | 36,225 us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent |  |
Accounts Payable, Current | 288,320 us-gaap_AccountsPayableCurrent | 254,930 us-gaap_AccountsPayableCurrent |  |
Intercompany accounts payable current | 0 gpi_Intercompanyaccountspayablecurrent | 0 gpi_Intercompanyaccountspayablecurrent |  |
Accrued Liabilities, Current | 172,463 us-gaap_AccruedLiabilitiesCurrent | 140,543 us-gaap_AccruedLiabilitiesCurrent |  |
Total current liabilities | 1,922,199 us-gaap_LiabilitiesCurrent | 1,865,176 us-gaap_LiabilitiesCurrent |  |
Long-term Debt and Capital Lease Obligations | 1,008,837 us-gaap_LongTermDebtAndCapitalLeaseObligations | 663,689 us-gaap_LongTermDebtAndCapitalLeaseObligations |  |
Derivative Liability, Noncurrent | 25,311 us-gaap_DerivativeLiabilitiesNoncurrent | 26,078 us-gaap_DerivativeLiabilitiesNoncurrent |  |
Other Liabilities, Noncurrent | 207,135 gpi_Deferredincometaxesandotherliabilities | 200,266 gpi_Deferredincometaxesandotherliabilities |  |
Temporary Equity, Carrying Amount, Attributable to Parent | 0 us-gaap_TemporaryEquityCarryingAmountAttributableToParent | 29,094 us-gaap_TemporaryEquityCarryingAmountAttributableToParent |  |
Stockholders' Equity Attributable to Parent | 978,010 us-gaap_StockholdersEquity | 1,035,175 us-gaap_StockholdersEquity | 860,284 us-gaap_StockholdersEquity | 807,100 us-gaap_StockholdersEquity
Intercompany note receivable | 0 gpi_Intercompanynotereceivable | 0 gpi_Intercompanynotereceivable |  |
Total liabilities and stockholders' equity | 4,141,492 us-gaap_LiabilitiesAndStockholdersEquity | 3,819,478 us-gaap_LiabilitiesAndStockholdersEquity |  |
Parent Company [Member] |  |  |  |
Cash and Cash Equivalents, at Carrying Value | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember
Contracts In Transit And Vehicle Receivables Net | 0 gpi_ContractsInTransitAndVehicleReceivablesNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 gpi_ContractsInTransitAndVehicleReceivablesNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Accounts, Notes, Loans and Financing Receivable, Net, Current | 0 us-gaap_AccountsNotesAndLoansReceivableNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_AccountsNotesAndLoansReceivableNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Intercompany accounts receivable current | 0 gpi_Intercompanyaccountsreceivablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 gpi_Intercompanyaccountsreceivablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Inventory, Net | 0 us-gaap_InventoryNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_InventoryNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Deferred Tax Assets, Net, Current | 196 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 2,279 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Prepaid Expense and Other Assets, Current | 590 us-gaap_PrepaidExpenseAndOtherAssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 619 us-gaap_PrepaidExpenseAndOtherAssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Total current assets | 786 us-gaap_AssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 2,898 us-gaap_AssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Property, Plant and Equipment, Net | 0 us-gaap_PropertyPlantAndEquipmentNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_PropertyPlantAndEquipmentNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Goodwill | 0 us-gaap_Goodwill / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_Goodwill / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Indefinite-Lived Franchise Rights | 0 us-gaap_IndefiniteLivedFranchiseRights / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_IndefiniteLivedFranchiseRights / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Investment in Subsidiaries | 1,964,442 gpi_InvestmentinSubsidiaries / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 1,710,185 gpi_InvestmentinSubsidiaries / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Other Assets, Noncurrent | 0 us-gaap_OtherAssetsNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_OtherAssetsNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Total assets | 1,965,228 us-gaap_Assets / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 1,713,083 us-gaap_Assets / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Floorplan Notes Payable Credit Facility Gross | 0 gpi_FloorplanNotesPayableCreditFacilityGross / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 gpi_FloorplanNotesPayableCreditFacilityGross / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Floorplan Offset | 0 gpi_FloorplanOffset / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 gpi_FloorplanOffset / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Floorplan Notes Payable Manufacturer Affiliates | 0 gpi_FloorplanNotesPayableManufacturerAffiliates / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 gpi_FloorplanNotesPayableManufacturerAffiliates / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
FMCC Offset | 0 gpi_FMCCOffset / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |  |
Long-term Debt and Capital Lease Obligations, Current | 0 us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Accounts Payable, Current | 0 us-gaap_AccountsPayableCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_AccountsPayableCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Intercompany accounts payable current | 295,421 gpi_Intercompanyaccountspayablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 292,498 gpi_Intercompanyaccountspayablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Accrued Liabilities, Current | 0 us-gaap_AccruedLiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_AccruedLiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Total current liabilities | 295,421 us-gaap_LiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 292,498 us-gaap_LiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Long-term Debt and Capital Lease Obligations | 609,812 us-gaap_LongTermDebtAndCapitalLeaseObligations / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 304,637 us-gaap_LongTermDebtAndCapitalLeaseObligations / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Derivative Liability, Noncurrent | 0 us-gaap_DerivativeLiabilitiesNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 us-gaap_DerivativeLiabilitiesNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Other Liabilities, Noncurrent | 0 gpi_Deferredincometaxesandotherliabilities / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 gpi_Deferredincometaxesandotherliabilities / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Temporary Equity, Carrying Amount, Attributable to Parent |  | 29,094 us-gaap_TemporaryEquityCarryingAmountAttributableToParent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Stockholders' Equity Attributable to Parent | 1,059,995 us-gaap_StockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 1,086,854 us-gaap_StockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Intercompany note receivable | 0 gpi_Intercompanynotereceivable / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 0 gpi_Intercompanynotereceivable / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Stockholders' Equity Attributable to Parent Excluding Intercompany Receivables | 1,059,995 gpi_StockholdersEquityAttributabletoParentExcludingIntercompanyReceivables / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |  |
Total liabilities and stockholders' equity | 1,965,228 us-gaap_LiabilitiesAndStockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember | 1,713,083 us-gaap_LiabilitiesAndStockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ParentCompanyMember |  |
Guarantor Subsidiaries [Member] |  |  |  |
Cash and Cash Equivalents, at Carrying Value | 25,379 us-gaap_CashAndCashEquivalentsAtCarryingValue / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 4,306 us-gaap_CashAndCashEquivalentsAtCarryingValue / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 4,341 us-gaap_CashAndCashEquivalentsAtCarryingValue / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 6,862 us-gaap_CashAndCashEquivalentsAtCarryingValue / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember
Contracts In Transit And Vehicle Receivables Net | 218,361 gpi_ContractsInTransitAndVehicleReceivablesNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 217,462 gpi_ContractsInTransitAndVehicleReceivablesNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Accounts, Notes, Loans and Financing Receivable, Net, Current | 117,427 us-gaap_AccountsNotesAndLoansReceivableNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 104,732 us-gaap_AccountsNotesAndLoansReceivableNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Intercompany accounts receivable current | 276,217 gpi_Intercompanyaccountsreceivablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 212,592 gpi_Intercompanyaccountsreceivablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Inventory, Net | 1,342,022 us-gaap_InventoryNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 1,339,062 us-gaap_InventoryNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Deferred Tax Assets, Net, Current | 10,866 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 18,871 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Prepaid Expense and Other Assets, Current | 22,039 us-gaap_PrepaidExpenseAndOtherAssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 9,974 us-gaap_PrepaidExpenseAndOtherAssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Total current assets | 2,012,311 us-gaap_AssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 1,906,999 us-gaap_AssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Property, Plant and Equipment, Net | 839,063 us-gaap_PropertyPlantAndEquipmentNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 715,586 us-gaap_PropertyPlantAndEquipmentNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Goodwill | 700,642 us-gaap_Goodwill / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 612,469 us-gaap_Goodwill / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Indefinite-Lived Franchise Rights | 257,502 us-gaap_IndefiniteLivedFranchiseRights / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 216,412 us-gaap_IndefiniteLivedFranchiseRights / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Investment in Subsidiaries | 0 gpi_InvestmentinSubsidiaries / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 0 gpi_InvestmentinSubsidiaries / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Other Assets, Noncurrent | 10,120 us-gaap_OtherAssetsNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 14,891 us-gaap_OtherAssetsNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Total assets | 3,819,638 us-gaap_Assets / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 3,466,357 us-gaap_Assets / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Floorplan Notes Payable Credit Facility Gross | 1,137,743 gpi_FloorplanNotesPayableCreditFacilityGross / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 1,125,030 gpi_FloorplanNotesPayableCreditFacilityGross / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Floorplan Offset | (39,616)gpi_FloorplanOffset / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | (56,198)gpi_FloorplanOffset / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Floorplan Notes Payable Manufacturer Affiliates | 207,329 gpi_FloorplanNotesPayableManufacturerAffiliates / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 248,584 gpi_FloorplanNotesPayableManufacturerAffiliates / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
FMCC Offset | (22,500)gpi_FMCCOffset / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |  |
Long-term Debt and Capital Lease Obligations, Current | 61,185 us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 24,428 us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Accounts Payable, Current | 176,143 us-gaap_AccountsPayableCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 158,124 us-gaap_AccountsPayableCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Intercompany accounts payable current | 0 gpi_Intercompanyaccountspayablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 0 gpi_Intercompanyaccountspayablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Accrued Liabilities, Current | 149,700 us-gaap_AccruedLiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 118,529 us-gaap_AccruedLiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Total current liabilities | 1,669,984 us-gaap_LiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 1,618,497 us-gaap_LiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Long-term Debt and Capital Lease Obligations | 347,202 us-gaap_LongTermDebtAndCapitalLeaseObligations / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 328,090 us-gaap_LongTermDebtAndCapitalLeaseObligations / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Derivative Liability, Noncurrent | 25,311 us-gaap_DerivativeLiabilitiesNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 26,078 us-gaap_DerivativeLiabilitiesNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Other Liabilities, Noncurrent | 193,077 gpi_Deferredincometaxesandotherliabilities / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 171,141 gpi_Deferredincometaxesandotherliabilities / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Temporary Equity, Carrying Amount, Attributable to Parent |  | 0 us-gaap_TemporaryEquityCarryingAmountAttributableToParent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Stockholders' Equity Attributable to Parent | 1,879,485 us-gaap_StockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 1,615,049 us-gaap_StockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Intercompany note receivable | (295,421)gpi_Intercompanynotereceivable / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | (292,498)gpi_Intercompanynotereceivable / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Total liabilities and stockholders' equity | 3,819,638 us-gaap_LiabilitiesAndStockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember | 3,466,357 us-gaap_LiabilitiesAndStockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_GuarantorSubsidiariesMember |  |
Non-Guarantor Subsidiaries [Member] |  |  |  |
Cash and Cash Equivalents, at Carrying Value | 15,596 us-gaap_CashAndCashEquivalentsAtCarryingValue / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 15,909 us-gaap_CashAndCashEquivalentsAtCarryingValue / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 309 us-gaap_CashAndCashEquivalentsAtCarryingValue / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 8,033 us-gaap_CashAndCashEquivalentsAtCarryingValue / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember
Contracts In Transit And Vehicle Receivables Net | 19,087 gpi_ContractsInTransitAndVehicleReceivablesNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 7,694 gpi_ContractsInTransitAndVehicleReceivablesNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Accounts, Notes, Loans and Financing Receivable, Net, Current | 33,903 us-gaap_AccountsNotesAndLoansReceivableNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 30,326 us-gaap_AccountsNotesAndLoansReceivableNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Intercompany accounts receivable current | 0 gpi_Intercompanyaccountsreceivablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 gpi_Intercompanyaccountsreceivablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Inventory, Net | 214,683 us-gaap_InventoryNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 203,256 us-gaap_InventoryNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Deferred Tax Assets, Net, Current | 0 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Prepaid Expense and Other Assets, Current | 15,070 us-gaap_PrepaidExpenseAndOtherAssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 13,448 us-gaap_PrepaidExpenseAndOtherAssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Total current assets | 298,339 us-gaap_AssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 270,633 us-gaap_AssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Property, Plant and Equipment, Net | 111,325 us-gaap_PropertyPlantAndEquipmentNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 80,770 us-gaap_PropertyPlantAndEquipmentNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Goodwill | 129,735 us-gaap_Goodwill / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 124,834 us-gaap_Goodwill / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Indefinite-Lived Franchise Rights | 46,445 us-gaap_IndefiniteLivedFranchiseRights / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 85,093 us-gaap_IndefiniteLivedFranchiseRights / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Investment in Subsidiaries | 0 gpi_InvestmentinSubsidiaries / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 gpi_InvestmentinSubsidiaries / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Other Assets, Noncurrent | 11,441 us-gaap_OtherAssetsNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 1,485 us-gaap_OtherAssetsNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Total assets | 597,285 us-gaap_Assets / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 562,815 us-gaap_Assets / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Floorplan Notes Payable Credit Facility Gross | 5,503 gpi_FloorplanNotesPayableCreditFacilityGross / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 18,074 gpi_FloorplanNotesPayableCreditFacilityGross / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Floorplan Offset | 0 gpi_FloorplanOffset / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 gpi_FloorplanOffset / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Floorplan Notes Payable Manufacturer Affiliates | 100,327 gpi_FloorplanNotesPayableManufacturerAffiliates / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 97,988 gpi_FloorplanNotesPayableManufacturerAffiliates / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
FMCC Offset | 0 gpi_FMCCOffset / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |  |
Long-term Debt and Capital Lease Obligations, Current | 11,445 us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 11,797 us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Accounts Payable, Current | 112,177 us-gaap_AccountsPayableCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 96,806 us-gaap_AccountsPayableCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Intercompany accounts payable current | 276,217 gpi_Intercompanyaccountspayablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 212,592 gpi_Intercompanyaccountspayablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Accrued Liabilities, Current | 22,763 us-gaap_AccruedLiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 22,014 us-gaap_AccruedLiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Total current liabilities | 528,432 us-gaap_LiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 459,271 us-gaap_LiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Long-term Debt and Capital Lease Obligations | 51,823 us-gaap_LongTermDebtAndCapitalLeaseObligations / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 30,962 us-gaap_LongTermDebtAndCapitalLeaseObligations / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Derivative Liability, Noncurrent | 0 us-gaap_DerivativeLiabilitiesNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_DerivativeLiabilitiesNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Other Liabilities, Noncurrent | 14,058 gpi_Deferredincometaxesandotherliabilities / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 29,125 gpi_Deferredincometaxesandotherliabilities / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Temporary Equity, Carrying Amount, Attributable to Parent |  | 0 us-gaap_TemporaryEquityCarryingAmountAttributableToParent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Stockholders' Equity Attributable to Parent | 2,972 us-gaap_StockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 43,457 us-gaap_StockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Intercompany note receivable | 0 gpi_Intercompanynotereceivable / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 gpi_Intercompanynotereceivable / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Total liabilities and stockholders' equity | 597,285 us-gaap_LiabilitiesAndStockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember | 562,815 us-gaap_LiabilitiesAndStockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Consolidation, Eliminations [Member] |  |  |  |
Cash and Cash Equivalents, at Carrying Value | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Contracts In Transit And Vehicle Receivables Net | 0 gpi_ContractsInTransitAndVehicleReceivablesNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 gpi_ContractsInTransitAndVehicleReceivablesNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Accounts, Notes, Loans and Financing Receivable, Net, Current | 0 us-gaap_AccountsNotesAndLoansReceivableNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_AccountsNotesAndLoansReceivableNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Intercompany accounts receivable current | (276,217)gpi_Intercompanyaccountsreceivablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | (212,592)gpi_Intercompanyaccountsreceivablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Inventory, Net | 0 us-gaap_InventoryNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_InventoryNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Deferred Tax Assets, Net, Current | 0 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Prepaid Expense and Other Assets, Current | 0 us-gaap_PrepaidExpenseAndOtherAssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_PrepaidExpenseAndOtherAssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Total current assets | (276,217)us-gaap_AssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | (212,592)us-gaap_AssetsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Property, Plant and Equipment, Net | 0 us-gaap_PropertyPlantAndEquipmentNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_PropertyPlantAndEquipmentNet / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Goodwill | 0 us-gaap_Goodwill / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_Goodwill / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Indefinite-Lived Franchise Rights | 0 us-gaap_IndefiniteLivedFranchiseRights / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_IndefiniteLivedFranchiseRights / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Investment in Subsidiaries | (1,964,442)gpi_InvestmentinSubsidiaries / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | (1,710,185)gpi_InvestmentinSubsidiaries / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Other Assets, Noncurrent | 0 us-gaap_OtherAssetsNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_OtherAssetsNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Total assets | (2,240,659)us-gaap_Assets / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | (1,922,777)us-gaap_Assets / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Floorplan Notes Payable Credit Facility Gross | 0 gpi_FloorplanNotesPayableCreditFacilityGross / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 gpi_FloorplanNotesPayableCreditFacilityGross / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Floorplan Offset | 0 gpi_FloorplanOffset / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 gpi_FloorplanOffset / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Floorplan Notes Payable Manufacturer Affiliates | 0 gpi_FloorplanNotesPayableManufacturerAffiliates / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 gpi_FloorplanNotesPayableManufacturerAffiliates / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
FMCC Offset | 0 gpi_FMCCOffset / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |  |
Long-term Debt and Capital Lease Obligations, Current | 0 us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Accounts Payable, Current | 0 us-gaap_AccountsPayableCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_AccountsPayableCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Intercompany accounts payable current | (571,638)gpi_Intercompanyaccountspayablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | (505,090)gpi_Intercompanyaccountspayablecurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Accrued Liabilities, Current | 0 us-gaap_AccruedLiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_AccruedLiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Total current liabilities | (571,638)us-gaap_LiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | (505,090)us-gaap_LiabilitiesCurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Long-term Debt and Capital Lease Obligations | 0 us-gaap_LongTermDebtAndCapitalLeaseObligations / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_LongTermDebtAndCapitalLeaseObligations / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Derivative Liability, Noncurrent | 0 us-gaap_DerivativeLiabilitiesNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_DerivativeLiabilitiesNoncurrent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Other Liabilities, Noncurrent | 0 gpi_Deferredincometaxesandotherliabilities / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 0 gpi_Deferredincometaxesandotherliabilities / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Temporary Equity, Carrying Amount, Attributable to Parent |  | 0 us-gaap_TemporaryEquityCarryingAmountAttributableToParent / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Stockholders' Equity Attributable to Parent | (1,964,442)us-gaap_StockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | (1,710,185)us-gaap_StockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Intercompany note receivable | 295,421 gpi_Intercompanynotereceivable / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | 292,498 gpi_Intercompanynotereceivable / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |
Total liabilities and stockholders' equity | $ (2,240,659)us-gaap_LiabilitiesAndStockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember | $ (1,922,777)us-gaap_LiabilitiesAndStockholdersEquity / gpi_CondensedconsolidatedfinancialinformationentitiesAxis = us-gaap_ConsolidationEliminationsMember |  |

X
- Definition Amounts due from financing institutions on retail finance contracts from vehicle sales and dealer incentives due from manufacturers. Also, included are amounts receivable from vehicle wholesale sales. + References No definition available. + Details
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- Definition Amounts payable for the financing of specific new vehicle inventory with Ford Motor Credit Company, the financing of new and used vehicle inventory in the United Kingdom with BMW Financial Services and the financing of rental vehicle inventory with several other manufacturers. Payments on floor plan notes payable are generally due as the vehicles are sold. + References No definition available. + Details
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- Definition Stockholders' Equity Attributable to Parent Excluding Intercompany Receivables + References No definition available. + Details
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- Definition The aggregate of amounts due from customers or clients, within one year of the balance sheet date (or one operating cycle, if longer), for goods or services that have been delivered or sold in the normal course of business and an amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date within one year of the balance sheet, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection and net of any write-downs taken for collection uncertainty on the part of the holder, respectively. + 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 210.5-02.3,4) -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 3, 4 -Article 5 + Details
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- Definition Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Subparagraph a -Article 5 Reference 2: 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(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + 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 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + 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 210.5-02.9) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6801-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 9 -Article 5 + Details
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