ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total accounts receivable | $ 1,130.6 | $ 1,141.0 |
| Less: Allowance for doubtful accounts | (5.7) | (6.9) |
| Total accounts receivable, net | 1,124.9 | 1,134.1 |
| Contracts in transit | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total accounts receivable | 429.4 | 468.6 |
| Vehicle receivables | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total accounts receivable | 209.3 | 177.6 |
| Manufacturer receivables | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total accounts receivable | 315.5 | 327.9 |
| Trade receivables | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total accounts receivable | 148.4 | 148.6 |
| Other receivables, current | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total accounts receivable | $ 28.0 | $ 18.3 |