Other Income, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Income and Expenses [Abstract]
Foreign currency (loss) gain	$ (3.5)	$ 6.4	$ 7.4	$ (7.7)
Equity income	3.2	5.6	10.5	6.7
Expected return on pension assets/amortization	1.9	2.5	7.3	7.2
Other miscellaneous expense, net	(1.1)	(0.2)	(0.2)	(0.4)
Other income, net	$ 0.5	$ 14.3	$ 25.0	$ 5.8