Nature Of Operations And Significant Accounting Policies (Narrative) (Details)		12 Months Ended
		Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)
Nature Of Operations And Significant Accounting Policies [Line Items]
Number of countries in which entity operates		30
Dividends received on equity method investments	[1]	$ 3,422,000	$ 5,228,000	$ 6,508,000
Advances to suppliers, current and non-current		134,000,000	156,000,000
Valuation allowance amount related to advances to suppliers		29,000,000	35,000,000
Provision for loss on uncollectible advances to suppliers		800,000	3,700,000	5,500,000
Advances to suppliers on which interest has been discontinued		11,000,000	15,000,000
Aggregate balance of recoverable value added tax credits		52,000,000	60,000,000
Valuation allowance on recoverable value added tax credits		19,000,000	23,000,000
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)		22,500,000	28,800,000	14,300,000
Foreign currency transaction gain (loss)		$ 8,000,000	17,700,000	$ (6,000,000)
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] | 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] | 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.