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Intangible Assets - Changes in Goodwill by Reportable Segment (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Goodwill |  |
Beginning balance | $ 2,124,100,000 | $ 1,928,400,000
Additions | 93,800,000 | 209,600,000
Disposals | (1,900,000) | (600,000)
Foreign currency translation | (61,300,000) | (13,300,000)
Ending balance | 2,154,700,000 | 2,124,100,000
Retail automotive dealership |  |
Goodwill |  |
Beginning balance | 1,622,200,000 | 1,534,800,000
Additions | 49,900,000 | 96,800,000
Disposals | (1,900,000) | (600,000)
Foreign currency translation | (52,600,000) | (8,800,000)
Ending balance | 1,617,600,000 | 1,622,200,000
Retail commercial truck dealership |  |
Goodwill |  |
Beginning balance | 422,300,000 | 309,400,000
Additions | 43,900,000 | 112,800,000
Disposals | 0 | 0
Foreign currency translation | (3,900,000) | 100,000
Ending balance | 462,300,000 | 422,300,000
Other |  |
Goodwill |  |
Beginning balance | 79,600,000 | 84,200,000
Additions | 0 | 0
Disposals | 0 | 0
Foreign currency translation | (4,800,000) | (4,600,000)
Ending balance | 74,800,000 | $ 79,600,000
Non-Automotive Investments |  |
Goodwill |  |
Ending balance | $ 0 |

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