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v3.19.3

Financial Instruments and Fair Value Measurements - Narrative (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 USD ($) swap | Sep. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) swap | Sep. 30, 2018 USD ($) | Dec. 31, 2018 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Investment balances | $ 3,600,000 |  | $ 3,600,000 |  | $ 2,800,000
Gain (loss) related to hedge ineffectiveness | 0 |  | 0 |  |
Gain (loss) related to hedge ineffectiveness |  | $ 0 |  | $ 0 |
Increase (decrease) in floor plan interest expense due to impact of interest rate hedges | (100,000) | $ 1,100,000 | (700,000) | $ 4,500,000 |
Maximum notional value of derivatives in effect at any time | 896,900,000 |  | 896,900,000 |  |
Accumulated unrealized gains (losses), net of income taxes | 10,800,000 |  | 10,800,000 |  |
Accumulated unrealized gains (losses), net of income taxes |  |  |  |  | $ 15,900,000
Amount expected to be reclassified from other comprehensive loss into earnings | $ 500,000 |  | $ 500,000 |  |
Interest Rate Swaps |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Number of additional forward interest rate swaps | swap | 25 |  | 25 |  |
Notional value | $ 896,900,000 |  | $ 896,900,000 |  |
Weighted average interest rate | 2.30% |  | 2.30% |  |
Forward Interest Rate Swaps |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Number of additional forward interest rate swaps | swap | 8 |  | 8 |  |
Notional value | $ 450,000,000.0 |  | $ 450,000,000.0 |  |
Weighted average interest rate | 1.70% |  | 1.70% |  |

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