Other Balance Sheet Information - Other Current Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Other Current Liabilities:
Accrued customer volume rebates	$ 17.1	$ 28.4
Accrued compensation	11.8	16.0
Income taxes payable	8.7	10.4
Accrued interest	8.8	4.2
Pension liabilities	0.9	1.2
Restructuring liability	3.3	2.7
Other accrued liabilities	49.3	50.7
Total other current liabilities	$ 99.9	$ 113.6