Income Taxes - Schedule of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Activity related to unrecognized tax benefit
Balance at the beginning of the period	$ 18.1	$ 7.5	$ 12.3
Additions based on tax positions related to the current year	0.3	11.0	1.1
(Reductions) additions for tax positions of prior years	(7.9)	(0.1)	(5.7)
Expiration of the statute of limitations for the assessment of taxes		(0.3)	(0.3)
Other, including currency translation			0.1
Balance at the end of the period	$ 10.5	$ 18.1	$ 7.5