Derivatives And Hedging Activities Notional Amount of Forward Contracts (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Derivative [Line Items]
Derivative, Notional Amount	$ 74.0
Derivatives Designated As Hedges [Member] | Forward contracts related to tobacco purchase [Member]
Derivative [Line Items]
Derivative, Notional Amount		105.6	126.1	158.9
Derivatives Not Designated As Hedges [Member] | Forward contracts related to tobacco processing costs [Member]
Derivative [Line Items]
Derivative, Notional Amount		22.9	26.8	34.3
Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative, Notional Amount		$ 128.5	$ 152.9	$ 193.2