Derivatives And Hedging Activities Notional Amount of Forward Contracts (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Derivatives Designated As Hedges [Member] | Forward contracts related to tobacco purchase [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 126.1	$ 158.9	$ 182.5
Derivatives Not Designated As Hedges [Member] | Forward contracts related to tobacco processing costs [Member]
Derivative [Line Items]
Derivative, Notional Amount	26.8	34.3	48.3
Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 152.9	$ 193.2	$ 230.8