Derivatives And Hedging Activities (Effect Of Derivative Financial Instruments On The Consolidated Statements Of Income) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Derivatives Designated As Hedges [Member] | Fair Value Hedges [Member] | Interest Rate Swap Agreements [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in earnings	$ 1,776	$ 2,919	$ 3,195	$ 6,701
Derivatives Designated As Hedges [Member] | Fair Value Hedges [Member] | Interest Rate Swap Agreements [Member] | Interest Expense [Member] | Fixed Rate Long-Term Debt [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in earnings	(1,776)	(2,919)	(3,195)	(6,701)
Derivatives Designated As Hedges [Member] | Cash Flow Hedges [Member] | Forward Foreign Currency Exchange Contracts [Member] | Cost Of Goods Sold [Member] | Forecast Purchases Of Tobacco In Brazil [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recorded in accumulated other comprehensive loss	(116)	459	3,331	88
Gain (loss) reclassified from accumulated other comprehensive loss into earnings	3,385	143	3,823	100
Derivatives Designated As Hedges [Member] | Cash Flow Hedges [Member] | Forward Foreign Currency Exchange Contracts [Member] | Selling, General And Administrative Expenses [Member] | Forecast Purchases Of Tobacco In Brazil [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in earnings from ineffective portion and early de-designation of cash flow hedges	62	2	858	101
Derivatives Not Designated As Hedges [Member] | Forward Foreign Currency Exchange Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gain (loss) recognized in earnings for forward foreign currency exchange contracts not designated as hedges	(943)	2,101	1,094	2,205
Derivatives Not Designated As Hedges [Member] | Forward Foreign Currency Exchange Contracts [Member] | Selling, General And Administrative Expenses [Member] | Forecast Processing Costs And Forecast Purchases Of Tobacco [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in earnings	(283)	1,015	1,302	1,202
Derivatives Not Designated As Hedges [Member] | Forward Foreign Currency Exchange Contracts [Member] | Selling, General And Administrative Expenses [Member] | Local Currency Monetary Assets And Liabilities Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in earnings				661
Derivatives Not Designated As Hedges [Member] | Forward Foreign Currency Exchange Contracts [Member] | Selling, General And Administrative Expenses [Member] | Fixed-Price Orders And Accounts Receivable Non-U S Dollar Subsidiaries [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in earnings	$ (660)	$ 1,086	$ (208)	$ 342