Other Current Liabilities - Schedule of Other Current Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2019	Mar. 31, 2018
Components of Other Current Liabilities [Line Items]
Other current liabilities	$ 137.1	$ 127.4
Contract liabilities
Components of Other Current Liabilities [Line Items]
Other current liabilities	5.1	3.2
Sales rebates
Components of Other Current Liabilities [Line Items]
Other current liabilities	35.3	26.8
Commissions
Components of Other Current Liabilities [Line Items]
Other current liabilities	6.8	6.1
Restructuring and other similar charges
Components of Other Current Liabilities [Line Items]
Other current liabilities	4.3	2.6
Product warranty
Components of Other Current Liabilities [Line Items]
Other current liabilities	7.2	7.7
Risk management
Components of Other Current Liabilities [Line Items]
Other current liabilities	10.5	10.1
Legal and environmental
Components of Other Current Liabilities [Line Items]
Other current liabilities	2.6	3.4
Taxes, other than income taxes
Components of Other Current Liabilities [Line Items]
Other current liabilities	7.8	8.0
Income taxes payable
Components of Other Current Liabilities [Line Items]
Other current liabilities	20.3	19.4
Interest payable
Components of Other Current Liabilities [Line Items]
Other current liabilities	7.7	8.7
Other
Components of Other Current Liabilities [Line Items]
Other current liabilities	$ 29.5	$ 31.4