Investment In and Advances to Unconsolidated Affiliates - Balance Sheet of Equity Method Investments (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Equity Method Investment, Summarized Financial Information, Assets [Abstract]
Current assets	$ 64.0	$ 24.0
Property and equipment, net	256.1	95.7
Other assets, net	240.1	106.7
Total assets	560.2	226.4
Equity Method Investment, Summarized Financial Information, Liabilities and Equity [Abstract]
Current liabilities	73.3	21.2
Long-term debt	745.0	0.0
Other liabilities	20.6	0.0
Members' (deficit) equity	(278.7)	205.2
Total liabilities and members' (deficit) equity	$ 560.2	$ 226.4