Other Income and Expense (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Other Income and Expense [Abstract]
Equity in earnings of non-consolidated affiliate		$ 0.3	$ 0.1	$ 0.7	$ 0.0
Interest income		0.0	0.1	0.3	0.3
Foreign currency transactions	[1]	(0.2)	0.1	(1.1)	(0.4)
Net periodic benefit cost	[2]	(0.6)	(0.6)	(2.0)	(2.2)
Total other expense - net		$ (0.5)	$ (0.3)	$ (2.1)	$ (2.3)

[1] Foreign currency transactions primarily consist of foreign currency transaction gains and losses on the re-measurement or settlement of foreign currency-denominated assets and liabilities, including intercompany loans and transactions denominated in a foreign currency, along with gains and losses on foreign currency exchange contracts.

[2] Represents net periodic benefit cost, exclusive of service cost, for the Company's pension and postretirement plans.