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Accumulated Other Comprehensive Income (Loss) (Narrative) (Details) (USD $) In Thousands, unless otherwise specified |  |  |  | 6 Months Ended
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Sep. 30, 2013 | Mar. 31, 2013 | Sep. 30, 2012 | Sep. 30, 2013 Accumulated Translation Adjustment [Member] | Sep. 30, 2012 Accumulated Translation Adjustment [Member] | Sep. 30, 2013 Accumulated Translation Adjustment [Member] Noncontrolling Interest [Member] | Sep. 30, 2012 Accumulated Translation Adjustment [Member] Noncontrolling Interest [Member] | Sep. 30, 2013 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Forward Foreign Currency Exchange Contract [Member] | Sep. 30, 2012 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Forward Foreign Currency Exchange Contract [Member] | Sep. 30, 2013 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Interest Rate Swap [Member] | Sep. 30, 2012 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Interest Rate Swap [Member] | Sep. 30, 2013 Accumulated Defined Benefit Plans Adjustment [Member] | Sep. 30, 2012 Accumulated Defined Benefit Plans Adjustment [Member]
Foreign currency translation: [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of year |  |  |  | $ (15,555) | $ (11,850) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net gain (loss) on foreign currency translation, net of income taxes |  |  |  | 5,582 | (2,962) | (337) | 191 |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income (loss) attributable to Universal Corporation, net of income taxes |  |  |  | 5,919 | (3,153) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at end of period |  |  |  | (9,636) | (15,003) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash flow hedges: [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of year |  |  |  |  |  |  |  | (855) |  | (942) |  | (1,091) |  | (727) |  |  |  |  |
Net gain (loss) on derivative instruments, net of income taxes |  |  |  |  |  |  |  | (631) |  | (5,950) |  | (112) |  | (945) |  |  |  |  |
Reclassifications to earnings, net of income taxes |  |  |  |  |  |  |  | 1,596 | [1] | 3,906 | [1] | 443 | [2] | 296 | [2] |  |  |  |
Other comprehensive income (loss) attributable to Universal Corporation, net of income taxes |  |  |  |  |  |  |  | 965 |  | (2,044) |  | 331 |  | (649) |  |  |  |  |
Balance at end of period |  |  |  |  |  |  |  | 110 |  | (2,986) |  | (760) |  | (1,376) |  |  |  |  |
Pension and other postretirement benefit plan: [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (58,039) |  | (66,842) |
Gains arising during period, net of income taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,400 | [3] | 0 | [3]
Prior service credit arising during the period, net of income taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,646 | [3] | 0 | [3]
Amortization included in earnings, net of income taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,774 | [4] | 4,294 | [4]
Other comprehensive income (loss) attributable to Universal Corporation, net of income taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25,820 |  | 4,294 |
Balance at end of period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (32,219) |  | (62,548) |
Other Comprehensive Income (Loss), Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Taxes on net gain (loss) on foreign currency translation |  |  |  | 3,007 | (1,595) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Taxes on net gain (loss) on derivative instruments |  |  |  |  |  |  |  | (339) |  | (3,203) |  | (60) |  | (509) |  |  |  |  |
Taxes on reclassifications to net income |  |  |  |  |  |  |  | (859) |  | (2,103) |  | (238) |  | (159) |  |  |  |  |
Taxes on losses (gains) arising during the period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (5,600) |  | 0 |
Taxes on prior service credit arising during the period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (6,809) |  | 0 |
Taxes on amortization included in net income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,493) |  | (2,312) |
Total accumulated other comprehensive income (loss) at end of period | $ (42,505) | $ (75,540) | $ (81,913) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | Gain (loss) on foreign currency cash flow hedges is reclassified from accumulated other comprehensive income (loss) to cost of goods sold when the related tobacco is sold to customers. See Note 7 for additional information.
[2] | Gain (loss) on interest rate cash flow hedges is reclassified from accumulated other comprehensive income (loss) to interest expense when the related interest payments are made on the debt. See Note 7 for additional information.
[3] | The Company remeasured the assets and liabilities of its U.S. pension plans during the quarter ended September 30, 2013 to reflect the impact of the plan amendments adopted during the quarter. These items arise from the plan remeasurement. See Note 9 for additional information.
[4] | This accumulated other comprehensive income (loss) component is included in the computation of net periodic benefit cost. See Note 9 for additional information.

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- Definition Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e681-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32022-110900 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 + Details
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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e681-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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- Definition Amount after tax of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e689-108580 + Details
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- Definition Amount of tax (expense) benefit of reclassification adjustment from accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans. + References No definition available. + Details
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- Definition Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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- Definition Amount of tax expense (benefit), before reclassification adjustments, related to increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e640-108580 + Details
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