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Goodwill and Intangible Assets, Net (Tables) | 12 Months Ended
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Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Intangible Assets, Net | Goodwill and intangible assets, net, at December 31 consisted of the following:
| 2023 |  | 2022
Goodwill | $ | 1,465.8 |  |  | $ | 1,320.1 |
Franchise rights - indefinite-lived | $ | 876.2 |  |  | $ | 816.2 |
Other intangible assets | 68.0 |  |  | 30.7 |
| 944.2 |  |  | 846.9 |
Less: accumulated amortization | (16.4) |  |  | (9.9) |
Intangible assets, net | $ | 927.8 |  |  | $ | 837.0 |
Goodwill Allocated to Reporting Units and Changes in Carrying Amounts | Goodwill allocated to our reporting units and changes in the carrying amount of goodwill for the years ended December 31, 2023 and 2022, were as follows:
| Domestic |  | Import |  | Premium Luxury |  | Other |  | Consolidated
Balance as of January 1, 2022 |  |  |  |  |  |  |  |  |
Goodwill (1) | $ | 368.7 |  |  | $ | 517.9 |  |  | $ | 741.5 |  |  | $ | 1,535.5 |  |  | $ | 3,163.6 |
Accumulated impairment losses (1) | (140.0) |  |  | — |  |  | (257.4) |  |  | (1,530.9) |  |  | (1,928.3) |
| 228.7 |  |  | 517.9 |  |  | 484.1 |  |  | 4.6 |  |  | 1,235.3 |
Acquisitions, dispositions, and other adjustments, net (2) | 7.6 |  |  | 0.8 |  |  | (2.0) |  |  | 78.4 |  |  | 84.8 |
Balance as of December 31, 2022 |  |  |  |  |  |  |  |  |
Goodwill (1) | 376.3 |  |  | 518.7 |  |  | 739.5 |  |  | 1,613.9 |  |  | 3,248.4 |
Accumulated impairment losses (1) | (140.0) |  |  | — |  |  | (257.4) |  |  | (1,530.9) |  |  | (1,928.3) |
| 236.3 |  |  | 518.7 |  |  | 482.1 |  |  | 83.0 |  |  | 1,320.1 |
Acquisitions, dispositions, and other adjustments, net (2) | (1.8) |  |  | 7.9 |  |  | — |  |  | 139.6 |  |  | 145.7 |
Balance as of December 31, 2023 |  |  |  |  |  |  |  |  |
Goodwill (1) | 374.5 |  |  | 526.6 |  |  | 739.5 |  |  | 1,753.5 |  |  | 3,394.1 |
Accumulated impairment losses (1) | (140.0) |  |  | — |  |  | (257.4) |  |  | (1,530.9) |  |  | (1,928.3) |
| $ | 234.5 |  |  | $ | 526.6 |  |  | $ | 482.1 |  |  | $ | 222.6 |  |  | $ | 1,465.8 |
(1) Gross goodwill balance and accumulated impairment losses reflected in “Other” include $1.47 billion associated with our single reporting unit (prior to September 30, 2008, our reporting unit reporting structure was comprised of a single reporting unit). Gross goodwill balance reflected in “Other” also includes amounts associated with the Collision Center, Parts Center, AutoNation Finance and AutoNation Mobile Service reporting units, as applicable in a given period. (2) Includes amounts reclassified to held for sale and related adjustments, which are presented in Other Current Assets in our Consolidated Balance Sheet as of period end.

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