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Nature Of Operations And Significant Accounting Policies (Narrative) (Details) | 12 Months Ended
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Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($) | Mar. 31, 2022 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] | $ 0 | $ 5,612,000 | $ 4,285,000
Advances to suppliers, current and non-current |  | 162,000,000 | 199,000,000 |
Valuation allowance amount related to advances to suppliers |  | 20,000,000 | 24,000,000 |
Provision (recoveries) for loss on uncollectible advances to suppliers |  | 14,100,000 | 10,600,000 | 6,000,000
Advances to suppliers on which interest has been discontinued |  | 2,000,000 | 3,000,000 |
Aggregate balance of recoverable value added tax credits |  | 72,000,000 | 64,000,000 |
Valuation allowance on recoverable value added tax credits |  | 21,000,000 | 22,000,000 |
Interest costs capitalized |  | 0 |  |
Foreign currency remeasurement gain (loss) |  | 5,100,000 | (3,900,000) | 19,000,000
Foreign currency transaction gain (loss) |  | $ 3,200,000 | $ 8,800,000 | $ (18,000,000)
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 |  |
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 |  | 12 years |  |
[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.

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