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CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Repayment of sellers' floor plan notes payable dealership acquisitions | $ 43.0 | $ 0.0 | $ 138.5
3.50% senior subordinated notes due 2025 |  |  |
Interest rate (as a percent) | 3.50% |  |
3.75% senior subordinated notes due 2029 |  |  |
Interest rate (as a percent) | 3.75% | 3.75% |
3.75% senior subordinated notes due 2020 |  |  |
Interest rate (as a percent) | 3.75% |  |
5.375% senior subordinated notes due 2024 |  |  |
Interest rate (as a percent) | 5.375% |  |
5.50% senior subordinated notes due 2026 redeemed June 24, 2021 |  |  |
Interest rate (as a percent) | 5.50% |  |
5.75% senior subordinated notes due 2022 |  |  |
Interest rate (as a percent) | 5.75% |  |

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