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