XML 96 R80.htm IDEA: XBRL DOCUMENT
v3.22.4

INVENTORIES - Summary of Inventories (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Inventory |  |
New vehicles | $ 536.2 | $ 254.8
Used vehicles | 537.3 | 596.6
Rental vehicles | 155.0 | 114.7
Parts, accessories and other | 128.0 | 107.1
Total inventories | $ 1,356.6 | $ 1,073.1

X
- Definition New Vehicles Inventory, Gross + References No definition available. + Details
Name: | gpi_NewVehiclesInventoryGross
Namespace Prefix: | gpi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Parts, Accessories And Other Inventory, Gross + References No definition available. + Details
Name: | gpi_PartsAccessoriesAndOtherInventoryGross
Namespace Prefix: | gpi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Rental Vehicles Inventory, Gross + References No definition available. + Details
Name: | gpi_RentalVehiclesInventoryGross
Namespace Prefix: | gpi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Used Vehicles Inventory, Gross + References No definition available. + Details
Name: | gpi_UsedVehiclesInventoryGross
Namespace Prefix: | gpi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_InventoryGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_InventoryNetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration