Other Income and Expense (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Other Income and Expense [Abstract]
Equity in earnings of non-consolidated affiliate		$ 0.1	$ 0.0	$ 0.0	$ 0.1
Interest income		0.1	0.1	0.3	0.3
Foreign currency transactions	[1]	0.1	(0.4)	(0.4)	(1.0)
Net periodic benefit cost	[2]	(0.6)	(0.7)	(2.2)	(2.2)
Total other expense - net		$ (0.3)	$ (1.0)	$ (2.3)	$ (2.8)

[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.