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Preferred Stock - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Equity [Abstract] |  |  |  |
Accrued cumulative preferred dividend | $ 22.9 |  | $ 22.9 |
Preferred stock dividend paid | 22.9 |  | $ 45.8 |
Accrued preferred dividends payable date |  |  | Aug. 14, 2020 |
Deemed dividends on Series A Preferred Stock | $ 9.2 | $ 8.1 | $ 18.2 | $ 16.0

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