Changes In Shareholders' Equity And Noncontrolling Interests In Subsidiaries (Reconciliation Of Changes In Shareholders' Equity And Noncontrolling Interests In Subsidiaries) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Schedule of Capitalization, Equity [Line Items]
Total stockholders' equity attributable to parent, beginning balance			$ 1,340,543
Noncontrolling interests in subsidiaries, beginning balance			44,226
Total shareholders' equity, beginning balance	$ 1,360,059	$ 1,341,555	1,384,769	$ 1,348,425
Repurchase of common stock	(893)	0	(893)	0
Accrual of stock-based compensation	1,622	1,119	5,304	4,085
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	0	26	2,090	2,458
Dividend equivalents on RSUs	291	272	557	536
Net income (loss) attributable to parent	21,855	19,510	28,685	25,867
Net income attributable to noncontrolling interest	(2,449)	2,245	(6,478)	(200)
Net (income) loss	19,406	21,755	22,207	25,667
Common stock dividends declared	(19,398)	(19,195)	(38,845)	(38,365)
Repurchase of stock, retained earnings	(2,555)	0	(2,555)	0
Dividend equivalents on RSUs	(291)	(272)	(557)	(536)
Other comprehensive income (loss)	(1,828)	(8,086)	(5,912)	748
Dividends paid to noncontrolling interests	(1,680)	(3,696)	(6,825)	(4,676)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders			(427)	0
Total stockholders' equity attributable to parent, ending balance	1,324,854	1,297,332	1,324,854	1,297,332
Noncontrolling interest in subsidiaries, ending balance	29,879	36,094	29,879	36,094
Total shareholders' equity, ending balance	1,354,733	1,333,426	1,354,733	1,333,426
Universal Corporation [Member]
Schedule of Capitalization, Equity [Line Items]
Total stockholders' equity attributable to parent, beginning balance	1,325,763	1,303,825	1,340,543	1,307,299
Repurchase of common stock	(893)	0	(893)	0
Accrual of stock-based compensation	1,622	1,119	5,304	4,085
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	0	26	2,090	2,458
Dividend equivalents on RSUs	291	272	557	536
Net income (loss) attributable to parent	21,855	19,510	28,685	25,867
Common stock dividends declared	(19,398)	(19,195)	(38,845)	(38,365)
Repurchase of stock, retained earnings	(2,555)	0	(2,555)	0
Dividend equivalents on RSUs	(291)	(272)	(557)	(536)
Other comprehensive income (loss) attributable to parent	(1,540)	(7,901)	(5,295)	904
Dividends paid to noncontrolling interests	0	0	0	0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders			0	0
Total stockholders' equity attributable to parent, ending balance	1,324,854	1,297,332	1,324,854	1,297,332
Noncontrolling Interests [Member]
Schedule of Capitalization, Equity [Line Items]
Noncontrolling interests in subsidiaries, beginning balance	34,296	37,730	44,226	41,126
Repurchase of common stock	0	0	0	0
Accrual of stock-based compensation	0	0	0	0
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	0	0	0	0
Dividend equivalents on RSUs	0	0	0	0
Net income attributable to noncontrolling interest	(2,449)	2,245	(6,478)	(200)
Common stock dividends declared	0	0	0	0
Repurchase of stock, retained earnings	0	0	0	0
Dividend equivalents on RSUs	0	0	0	0
Other comprehensive income (loss) attributable to noncontrolling interest	(288)	(185)	(617)	(156)
Dividends paid to noncontrolling interests	(1,680)	(3,696)	(6,825)	(4,676)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders			(427)	0
Noncontrolling interest in subsidiaries, ending balance	$ 29,879	$ 36,094	$ 29,879	$ 36,094