Divestitures (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) store	Dec. 31, 2022 USD ($) store franchises	Dec. 31, 2021 USD ($) store
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of Franchises Terminated | franchises		2
Gain on disposal | $	$ 6.1	$ 16.0	$ 13.3
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Operating Income (Expense), Net	Other Operating Income (Expense), Net	Other Operating Income (Expense), Net
Dealerships Divested
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of businesses divested	1	3	3
Collision Centers Divested [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of businesses divested			18