The number of stores that the company has announced will be acquired in a future period.

No definition available.

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Balance Type:	na
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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Period Type:	duration

- Definition

Amount after tax of pro forma income from continuing operations as if the business combination had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(3)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

+ Details

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

- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

+ Details

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

- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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- Details

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- Details

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- Details

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- Details

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Acquisitions (Details) $ in Millions	1 Months Ended	3 Months Ended			9 Months Ended
Acquisitions (Details) $ in Millions	Oct. 31, 2022 store	Sep. 30, 2022 USD ($)	Dec. 31, 2021 store	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($) store
Subsequent Event
Business Acquisition, Pro Forma Information [Abstract]
Number Of stores announced to be acquired \| store	4
Series of Individually Immaterial Business Acquisitions
Business Acquisition, Pro Forma Information [Abstract]
Amount of revenue for stores acquired in the second half of 2021 included in our Consolidated Statement of Operations		$ 258.2			$ 757.7
Amount of earnings for stores acquired in the second half of 2021 included in our Consolidated Statement of Operations		$ 10.2			$ 31.0
Pro forma revenue				$ 6,607.7		$ 19,913.9
Pro forma net income from continuing operations				$ 373.5		$ 1,015.4
Dealerships
Business Acquisition [Line Items]
Number of Businesses Acquired \| store			9			11
Collision Centers
Business Acquisition [Line Items]
Number of Businesses Acquired \| store			3			1