Derivatives And Hedging Activities Notional Amount of Forward Contracts (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Derivative [Line Items]
Notional Amount of Cash Flow Hedge Instruments	$ 193.2	$ 230.8	$ 283.7
Derivatives Designated As Hedges [Member] \| Forward contracts related to tobacco purchase [Member]
Derivative [Line Items]
Notional Amount of Cash Flow Hedge Instruments	158.9	182.5	235.2
Derivatives Not Designated As Hedges [Member] \| Forward contracts related to tobacco processing costs [Member]
Derivative [Line Items]
Notional Amount of Cash Flow Hedge Instruments	$ 34.3	$ 48.3	$ 48.5

Aggregate notional amount of all derivatives designated as cash flow hedging instruments. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

Name:	us-gaap_NotionalAmountOfCashFlowHedgeInstruments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant