Basis of Presentation and Summary of Significant Accounting Policies - Supplemental Cash Flow Information and Non-Cash Investing Activities (Details) - USD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	Jun. 02, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Supplemental Cash Flow Information:
Interest Paid	$ 12.5	$ 15.8	$ 29.0	$ 26.8
Taxes Paid	4.0	4.3	7.6	8.3
Non-Cash Investing Activities:
Capital Leases	$ 0.0	$ 0.0	$ 0.2	$ 0.0