Income Taxes - Schedule of Income Taxes and Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income before income taxes:
U.S.	$ 149.1	$ 164.3	$ 163.8
International	188.5	153.9	133.5
Income before income taxes, and equity in earnings of affiliated companies	337.6	318.2	297.3
Current:
U.S.	(9.5)	(0.3)	21.5
International	37.1	30.1	28.1
Current provision for income taxes	27.6	29.8	49.6
Deferred:
U.S.	54.3	48.6	34.4
International	8.4	4.6	5.3
Deferred provision for income taxes	62.7	53.2	39.7
Total provision for income taxes	$ 90.3	$ 83.0	$ 89.3