Investments - Summarized Information for Equity Method Investments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Net revenue	$ 462.0	$ 382.9
Gross profit	88.1	98.8
Income from continuing operations	4.1	38.7
Net income	2.0	30.9
Current assets	373.3	282.5
Noncurrent assets	95.1	90.5
Current liabilities	246.9	177.0
Noncurrent liabilities	$ 18.9	$ 19.5