Long-Term Debt - Schedule of Amortization and Accumulated Amortization of Deferred Financing Costs (Details) - USD ($) $ in Millions	1 Months Ended	2 Months Ended	3 Months Ended	5 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 02, 2019	Jun. 30, 2018	Jun. 02, 2019	Jun. 30, 2018	Dec. 31, 2018
Debt Disclosure [Abstract]
Amortization of deferred financing costs	$ 0.2	$ 6.8	$ 0.6	$ 7.5	$ 1.4
Accumulated amortization of deferred financing costs	$ 0.2					$ 15.5