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ACQUISITIONS - Other Acquisitions (Details) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 14, 2024 USD ($) dealership | Dec. 31, 2023 USD ($) dealership | Dec. 31, 2022 USD ($) dealership | Dec. 31, 2021 USD ($) dealership
Business Acquisition |  |  |  |
Additions through acquisitions |  | $ 49.7 | $ 246.3 |
Cash paid to acquire business |  | 366.1 | 528.7 | $ 1,099.6
Other Acquisitions |  |  |  |
Business Acquisition |  |  |  |
Aggregate consideration paid for dealerships |  |  |  | 166.8
Additions through acquisitions |  |  |  | $ 70.1
U.S. |  |  |  |
Business Acquisition |  |  |  |
Additions through acquisitions |  | $ 49.7 | $ 236.1 |
U.S. | Other Acquisitions |  |  |  |
Business Acquisition |  |  |  |
Number of dealerships acquired | dealership |  | 6 | 6 | 5
Aggregate consideration paid for dealerships |  | $ 365.8 | $ 507.5 |
Additions through acquisitions |  | 49.7 | 236.1 |
U.S. | Other Acquisitions | Subsequent Event |  |  |  |
Business Acquisition |  |  |  |
Number of dealerships acquired | dealership | 5 |  |  |
Aggregate consideration paid for dealerships | $ 273.3 |  |  |
U.K. |  |  |  |
Business Acquisition |  |  |  |
Additions through acquisitions |  | $ 0.0 | 10.2 |
U.K. | Other Acquisitions |  |  |  |
Business Acquisition |  |  |  |
Number of dealerships acquired | dealership |  |  |  | 7
Aggregate consideration paid for dealerships |  |  | 34.1 |
Additions through acquisitions |  |  | 10.2 |
Cash paid to acquire business |  |  | 32.9 |
Accounts payable |  |  | $ 1.2 |

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 30 -Paragraph 8 -SubTopic 30 -Topic 805 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479637/805-30-30-8 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -SubTopic 30 -Topic 805 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479581/805-30-50-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 30 -Paragraph 7 -SubTopic 30 -Topic 805 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479637/805-30-30-7 + Details
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