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Nature Of Operations And Significant Accounting Policies (Narrative) (Details) (USD $)
 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2012
Nature Of Operations And Significant Accounting Policies [Line Items]      
Number of countries in which entity operates 30    
Dividends received on equity method investments $ 6,508,000 [1] $ 122,000 [1] $ 16,723,000 [1]
Advances to suppliers, current and non-current 190,000,000 199,100,000  
Valuation allowance amount related to advances to suppliers 46,100,000 54,400,000  
Provision for loss on uncollectible advances to suppliers 5,500,000 1,600,000 11,900,000
Advances to suppliers on which interest has been discontinued 23,000,000 40,000,000  
Aggregate balance of recoverable value added tax credits 66,000,000 73,000,000  
Valuation allowance on recoverable value added tax credits 30,000,000 26,000,000  
Brazil audit assessment for tax, penalties, and interest on recoverable value added tax credits 21,000,000    
Reduced Brazil audit assessment for tax, penalties, and interest on recoverable value added tax credits   16,000,000  
Interest costs capitalized 0 0 0
Amount charged for goodwill impairment 0 0 0
Impairment of property, plant and equipment 0 0 0
Foreign currency remeasurement gain (loss) 14,300,000 10,600,000 (2,300,000)
Foreign currency transaction gain (loss) (6,000,000) (1,000,000) 4,200,000
Percentage of revenue earned from processing tobacco owned by customers 5.00%    
Zimbabwe [Member]
      
Nature Of Operations And Significant Accounting Policies [Line Items]      
Investment in deconsolidated subsidiary 0 0  
Net foreign currency translation loss 7,200,000    
Minimum [Member]
      
Nature Of Operations And Significant Accounting Policies [Line Items]      
Brazil audit assessment for tax, penalties, and interest on recoverable value added tax credits 0    
Minimum [Member] | Buildings [Member]
      
Nature Of Operations And Significant Accounting Policies [Line Items]      
Estimated useful life 15 years    
Minimum [Member] | Processing And Packing Machinery [Member]
      
Nature Of Operations And Significant Accounting Policies [Line Items]      
Estimated useful life 3 years    
Minimum [Member] | Transport Equipment [Member]
      
Nature Of Operations And Significant Accounting Policies [Line Items]      
Estimated useful life 3 years    
Minimum [Member] | Computer Equipment [Member]
      
Nature Of Operations And Significant Accounting Policies [Line Items]      
Estimated useful life 3 years    
Maximum [Member]
      
Nature Of Operations And Significant Accounting Policies [Line Items]      
Brazil audit assessment for tax, penalties, and interest on recoverable value added tax credits $ 16,000,000    
Maximum [Member] | Buildings [Member]
      
Nature Of Operations And Significant Accounting Policies [Line Items]      
Estimated useful life 40 years    
Maximum [Member] | Processing And Packing Machinery [Member]
      
Nature Of Operations And Significant Accounting Policies [Line Items]      
Estimated useful life 11 years    
Maximum [Member] | Transport Equipment [Member]
      
Nature Of Operations And Significant Accounting Policies [Line Items]      
Estimated useful life 10 years    
Maximum [Member] | Computer Equipment [Member]
      
Nature Of Operations And Significant Accounting Policies [Line Items]      
Estimated useful life 10 years    
[1] (1) In accordance with the applicable accounting guidance, dividends received from unconsolidated affiliates accounted for on the equity method that represent a return on capital (i.e., a return of earnings on a cumulative basis) are presented as operating cash flows in the consolidated statements of cash flows.