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Fair Value Measurements - Narrative (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Asset impairments |  | $ 0 | $ 0 | $ 1,900,000
Shift Technologies, Inc. |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Investment loss |  | $ 1,700,000 | $ 39,200,000 |
Franchise Rights |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Franchise value, impairment | $ 1,900,000 |  |  |

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