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Acquisitions (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
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

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