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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
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-Section 50
-Paragraph 5
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Amount after tax of pro forma income from continuing operations as if the business combination had been completed at the beginning of a period.

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

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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.

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

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

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Acquisitions (Details) $ in Millions	3 Months Ended	12 Months Ended
Acquisitions (Details) $ in Millions	Dec. 31, 2022 store	Dec. 31, 2023 store	Dec. 31, 2021 USD ($) store
Series of Individually Immaterial Business Acquisitions
Business Acquisition, Pro Forma Information [Abstract]
Amount of revenue included in our Consolidated Statement of Income			$ 176.9
Amount of earnings included in our Consolidated Statement of Income			6.9
Pro-forma revenue			26,544.2
Pro-forma net income from continuing operations			$ 1,407.0
Dealerships [Member]
Acquisitions [Line Items]
Number of stores purchased \| store	4	7	20
Collision Center [Member]
Acquisitions [Line Items]
Number of stores purchased \| store			4