Other Income and Expense (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Other Income and Expense [Abstract]
Equity in earnings (loss) of non-consolidated affiliate	$ 0.2	$ (0.1)	$ 0.4	$ 0.1
Interest income	0.1	0.1	0.2	0.3
Foreign currency transactions	(0.3)	0.1	(1.1)	(0.2)
Other non-operating income - net	0	0.1	0	0.1
Total other income (expense) - net	$ 0	$ 0.2	$ (0.5)	$ 0.3