Derivatives and Hedging Activities, (Gain) Loss by Hedging Relationship, by Income Statement Location, (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Derivative Instruments, (Gain) Loss [Line Items]
Amount of Loss Recognized in AOCI			$ 0.2	$ 0.7
Total Loss (Gain) Recognized in Earnings (Loss)	0.1	0.9	0.1	3.5
Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative Instruments, (Gain) Loss [Line Items]
Loss Reclassified from AOCI into Earnings (Loss)	0.1	0.7	0.3	2.4
Foreign Exchange Contract [Member]
Derivative Instruments, (Gain) Loss [Line Items]
Amount of Loss Recognized in AOCI			0	0
Commodity Derivatives [Member]
Derivative Instruments, (Gain) Loss [Line Items]
Amount of Loss Recognized in AOCI			0.2	0.7
Cost of Sales [Member] | Commodity Derivatives [Member]
Derivative Instruments, (Gain) Loss [Line Items]
Total Loss (Gain) Recognized in Earnings (Loss)	0.2	1.1	0.4	3.8
Cost of Sales [Member] | Commodity Derivatives [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative Instruments, (Gain) Loss [Line Items]
Loss Reclassified from AOCI into Earnings (Loss)	0.1	0.7	0.3	2.4
Other expense - net [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, (Gain) Loss [Line Items]
Total Loss (Gain) Recognized in Earnings (Loss)	(0.1)	(0.2)	(0.3)	(0.3)
Other expense - net [Member] | Foreign Exchange Contract [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative Instruments, (Gain) Loss [Line Items]
Loss Reclassified from AOCI into Earnings (Loss)	$ 0	$ 0	$ 0	$ 0