XML 82 R70.htm IDEA: XBRL DOCUMENT v3.19.1

Intangible Franchise Rights and Goodwill - Intangible Franchise Rights by Reportable Segment (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Intangible Franchise Rights [Roll Forward]
Balance	$ 259,630
Currency translation	835
Balance	260,465
U.S.
Intangible Franchise Rights [Roll Forward]
Balance	224,394
Currency translation	0
Balance	224,394
U.K.
Intangible Franchise Rights [Roll Forward]
Balance	35,092
Currency translation	837
Balance	35,929
Brazil
Intangible Franchise Rights [Roll Forward]
Balance	144
Currency translation	(2)
Balance	$ 142

X

- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

+ Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

No definition available.

+ Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=gpi_UnitedStatesSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=gpi_UnitedKingdomSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=gpi_BrazilSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: