Income Taxes - Schedule of Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
U.S. Federal and state									$ (0.7)	$ (7.3)	$ (12.8)
Non-U.S.									11.6	13.6	7.4
Total current									10.9	6.3	(5.4)
Deferred:
U.S. Federal and state									0.2	(6.2)	(7.0)
Non-U.S.									1.3	(4.9)	(37.1)
Total deferred									1.5	(11.1)	(44.1)
Income tax provision (benefit)	$ 2.1	$ 3.1	$ 3.9	$ 3.3	$ 3.2	$ (10.7)	$ (1.2)	$ 3.9	$ 12.4	$ (4.8)	$ (49.5)