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Revenues - Contract Balances (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Contract Balances |  |
Accounts receivable | $ 1,021.7 | $ 1,114.6
Unearned revenues | 312.6 | 280.2
Contracts in transit |  |
Contract Balances |  |
Accounts receivable | 289.5 | 361.9
Vehicle receivables |  |
Contract Balances |  |
Accounts receivable | 155.5 | 170.6
Manufacturer receivables |  |
Contract Balances |  |
Accounts receivable | 233.2 | 218.9
Trade receivables |  |
Contract Balances |  |
Accounts receivable | $ 321.0 | $ 344.1

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