Other (Expense) Income, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Income and Expenses [Abstract]
Loss on debt extinguishment	$ (45.7)	$ (60.7)	$ (0.4)
(Loss) gain on derivative contracts	(9.0)	13.4	0.4
Gain on sale of equity investment	0.0	0.0	11.3
Other income, net	3.0	1.1	3.5
Total	$ (51.7)	$ (46.2)	$ 14.8