Preferred Stock - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Equity [Abstract]
Preferred Series A dividends payable	$ 22.9		$ 22.9
Preferred stock dividend paid	$ 22.9
Accrued preferred dividends payable date	May 14, 2019
Deemed dividends on Series A Preferred Stock	$ 7.9	$ 7.0