Other (Expense) Income, net - (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Income (Expense) [Line Items]
Net foreign exchange transaction loss	$ (7.7)	$ (16.7)	$ (5.9)
Bank fee expense	(5.0)	(4.4)	(5.8)
Pension income other than service costs	1.0	3.9	16.7
Loss on debt redemption and refinancing activities	(16.1)	(1.9)	0.0
Other, net	8.3	1.0	1.2
Other (expense) income, net	(19.5)	$ (18.1)	$ 6.2
Claim For Overpayment Of Income Taxes
Other Income (Expense) [Line Items]
Other, net	$ 4.8