Contingencies and Litigation (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Concentration Risk [Line Items]
Number of major customers	1	1
Number of customers	10
Number of top customers	10
European value added tax [Abstract]
Value added tax payable	$ 1.5	$ 4.4	$ 10.7
Reduction to selling general and administrative expense	(2.9)	(1.6)
Environmental Matters [Abstract]
Number of sites remediation considered for potentially responsible party	3
Reserves for environmental matters	5.1	5.2
Continuing Operations [Member]
Environmental Matters [Abstract]
Additional reserves		1.0
Discontinued Operations [Member]
Environmental Matters [Abstract]
Additional reserves		(0.5)
Trade Compliance [Member]
Loss Contingencies [Line Items]
Estimated contingent liability			4.5
Decrease in estimated contingent liability			$ 2.3
Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage (in hundredths)	56.00%	59.00%	61.00%
Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage (in hundredths)	46.00%	51.00%