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Subsequent Events (Details) - USD ($) | Oct. 09, 2020 | Oct. 05, 2020 | Sep. 30, 2020
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Shift Technologies Inc |  |  |
Subsequent Event [Line Items] |  |  |
Equity method investments |  |  | $ 64,000,000.0
Subsequent Event | Senior Notes | 4.375% Senior Notes Due 2031 |  |  |
Subsequent Event [Line Items] |  |  |
Aggregate principal amount | $ 550,000,000 |  |
Stated interest rate (percent) | 4.375% |  |
Redemption percentage price (percent) | 100.00% |  |
Percentage of principal amount redeemed (up to) | 40.00% |  |
Redemption price upon certain equity offerings | 101.00% |  |
Subsequent Event | Class A common stock |  |  |
Subsequent Event [Line Items] |  |  |
Common stock issued (in shares) |  | 3,659,091 |
Option to purchase by underwriters, number of shares |  | 477,272 |
Proceeds from issuance of stock |  | $ 777,000,000 |

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