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		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Schedule of Capitalization, Equity [Line Items]
Total stockholders' equity attributable to parent, beginning balance			$ 1,246,665
Noncontrolling interests in subsidiaries, beginning balance			42,619
Total shareholders' equity, beginning balance	$ 1,278,876	$ 1,338,583	1,289,284	$ 1,379,878
Repurchase of common stock	0	(1,956)	0	(4,930)
Accrual of stock-based compensation	1,334	1,159	5,042	4,846
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			1,949	2,883
Dividend equivalents on RSUs	255	258	755	755
Net income (loss) attributable to parent	33,273	25,966	48,049	56,115
Net income attributable to noncontrolling interest	7,168	3,352	7,541	3,845
Net (income) loss	40,441	29,318	55,590	59,960
Common stock dividends declared	(18,877)	(18,768)	(56,617)	(56,626)
Repurchase of stock, retained earnings	0	(5,830)	0	(15,194)
Dividend equivalents on RSUs	(254)	(258)	(755)	(755)
Other comprehensive income (loss) attributable to parent			29,360	(8,481)
Other comprehensive income (loss)	15,240	10,705
Dividends paid to noncontrolling interests			(3,695)	(3,359)
Total stockholders' equity attributable to parent, ending balance	1,270,525	1,309,796	1,270,525	1,309,796
Noncontrolling interest in subsidiaries, ending balance	46,490	43,415	46,490	43,415
Total shareholders' equity, ending balance	1,317,015	1,353,211	1,317,015	1,353,211
Universal Corporation [Member]
Schedule of Capitalization, Equity [Line Items]
Total stockholders' equity attributable to parent, beginning balance	1,239,500	1,298,659	1,246,665	1,337,087
Repurchase of common stock	0	(1,956)	0	(4,930)
Accrual of stock-based compensation	1,334	1,159	5,042	4,846
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			1,949	2,883
Dividend equivalents on RSUs	255	258	755	755
Net income (loss) attributable to parent	33,273	25,966	48,049	56,115
Common stock dividends declared	(18,877)	(18,768)	(56,617)	(56,626)
Repurchase of stock, retained earnings	0	(5,830)	0	(15,194)
Dividend equivalents on RSUs	(254)	(258)	(755)	(755)
Other comprehensive income (loss) attributable to parent	15,294	10,566	29,335	(8,619)
Dividends paid to noncontrolling interests			0	0
Total stockholders' equity attributable to parent, ending balance	1,270,525	1,309,796	1,270,525	1,309,796
Noncontrolling Interests [Member]
Schedule of Capitalization, Equity [Line Items]
Noncontrolling interests in subsidiaries, beginning balance	39,376	39,924	42,619	42,791
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
Dividend equivalents on RSUs	0	0	0	0
Net income attributable to noncontrolling interest	7,168	3,352	7,541	3,845
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	(54)	139	25	138
Dividends paid to noncontrolling interests			(3,695)	(3,359)
Noncontrolling interest in subsidiaries, ending balance	$ 46,490	$ 43,415	$ 46,490	$ 43,415