Earnings Per Share (Computation Of Basic And Diluted Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Numerator for basic earnings per share
Net income attributable to Universal Corporation	$ 124,052	$ 86,577	$ 87,410
Denominator for basic earnings per share
Weighted average shares outstanding	24,773,710	24,764,177	24,656,009
Basic earnings per share	$ 5.01	$ 3.50	$ 3.55
Numerator for diluted earnings per share
Net income attributable to Universal Corporation	$ 124,052	$ 86,577	$ 87,410
Denominator for diluted earnings per share:
Weighted average shares outstanding	24,773,710	24,764,177	24,656,009
Effect of dilutive securities (if conversion or exercise assumed) Employee share-based awards	170,131	158,719	132,557
Denominator for diluted earnings per share	24,943,841	24,922,896	24,788,566
Diluted earnings per share	$ 4.97	$ 3.47	$ 3.53