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European Commission Fines And Other Legal And Tax Matters (Details)	3 Months Ended	12 Months Ended			1 Months Ended					3 Months Ended			0 Months Ended
	Sep. 30, 2010 USD ($)	Mar. 31, 2012 USD ($)	Mar. 31, 2011 USD ($)	Mar. 31, 2010 USD ($)	Oct. 31, 2004 Deltafina's [Member] EUR (€)	Oct. 31, 2004 Tabacos Espanoles S.A [Member] EUR (€)	Oct. 31, 2004 Five Companies Active In The Raw Spanish Tobacco Processing Market [Member] EUR (€)	Sep. 30, 2004 Spain [Member] USD ($)	Sep. 30, 2004 Spain [Member] EUR (€)	Sep. 30, 2010 Spain [Member] USD ($)	Sep. 30, 2010 Spain [Member] EUR (€)	Sep. 08, 2010 Spain [Member] EUR (€)	Sep. 09, 2011 Italy [Member] USD ($)	Sep. 09, 2011 Italy [Member] EUR (€)	Nov. 15, 2005 Italy [Member] EUR (€)
Loss Contingencies [Line Items]
Charge recorded to accrue European Commission fines		$ 49,091,000	$ (7,445,000)	$ 0				$ 14,900,000	€ 12,000,000				$ 49,100,000
Fines imposed by European Commission					11,880,000	108,000	20,000,000							30,000,000	30,000,000
Accumulated interest on European Commission fine														5,900,000
General Court decision reduced European Commission fine amount												6,120,000
Not justified percentage of European Commission's corresponding increase of the underlying fine												50.00%
Reversed European Commission fine previously recorded	(7,400,000)									7,400,000	5,760,000
Accrued interest income returned on the European Commission fine escrow funds										$ 1,200,000