Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		9 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2024
Foreign currency translation:
Balance at beginning of year		$ 1,437,207
Balance at end of period		1,450,610	$ 1,417,076
Cash flow hedges: [Abstract]
Balance at beginning of year		1,437,207
Balance at end of period		1,450,610	1,417,076
Pension and other postretirement benefit plans:
Balance at beginning of year		(1,437,207)
Balance at end of period		(1,450,610)	(1,417,076)
Other Comprehensive Income (Loss), Tax [Abstract]
Accumulated other comprehensive loss		(97,605)	(80,254)	$ (81,585)
Accumulated Translation Adjustment [Member]
Foreign currency translation:
Balance at beginning of year		(44,815)	(44,233)
Net gain (loss) on foreign currency translation		(3,014)	1,090
Less: Net (gain) loss on foreign currency translation attributable to noncontrolling interests		766	79
Other comprehensive income (loss) attributable to Universal Corporation, net of income taxes		(2,248)	1,169
Balance at end of period		(47,063)	(43,064)
Cash flow hedges: [Abstract]
Balance at beginning of year		(44,815)	(44,233)
Balance at end of period		(47,063)	(43,064)
Pension and other postretirement benefit plans:
Balance at beginning of year		44,815	44,233
Balance at end of period		47,063	43,064
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | Forward Foreign Currency Exchange Contract [Member]
Foreign currency translation:
Balance at beginning of year		(616)	4,899
Balance at end of period		(12,040)	1,072
Cash flow hedges: [Abstract]
Balance at beginning of year		(616)	4,899
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax		(11,414)	703
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	[1]	(10)	(4,530)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax		(11,424)	(3,827)
Balance at end of period		(12,040)	1,072
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax		3,000	(153)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax		(55)	(1,422)
Pension and other postretirement benefit plans:
Balance at beginning of year		616	(4,899)
Balance at end of period		12,040	(1,072)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | Interest Rate Swap [Member]
Foreign currency translation:
Balance at beginning of year		8,488	5,253
Balance at end of period		7,038	4,518
Cash flow hedges: [Abstract]
Balance at beginning of year		8,488	5,253
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax		2,115	5,751
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	[2]	(3,565)	(6,486)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax		(1,450)	(735)
Balance at end of period		7,038	4,518
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax		(1,475)	(2,063)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax		(2,486)	(2,327)
Pension and other postretirement benefit plans:
Balance at beginning of year		(8,488)	(5,253)
Balance at end of period		(7,038)	(4,518)
Accumulated Defined Benefit Plans Adjustment [Member]
Foreign currency translation:
Balance at beginning of year		44,642	42,976
Balance at end of period		45,540	42,780
Cash flow hedges: [Abstract]
Balance at beginning of year		44,642	42,976
Balance at end of period		45,540	42,780
Pension and other postretirement benefit plans:
Balance at beginning of year		(44,642)	(42,976)
Amortization included in earnings (net of tax expense (benefit) of $(30) and $(38))(3)	[3]	(898)	196
Other comprehensive income (loss) attributable to Universal Corporation, net of income taxes		(898)	196
Balance at end of period		(45,540)	(42,780)
Taxes on amortization included in net income		$ (30)	$ (38)

[1] Gain (loss) on foreign currency cash flow hedges related to forecast purchases of tobacco and crop input sales is reclassified from accumulated other comprehensive income (loss) to cost of goods sold when the tobacco is sold to customers. See Note 8 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 underlying debt, or as amortized to interest expense over the period to original maturity for terminated swap agreements. See Note 8 for additional information.

[3] This accumulated other comprehensive income (loss) component is included in the computation of net periodic benefit cost. See Note 10 for additional information.