Earnings Per Share (Computation Of Basic And Diluted Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Numerator for basic earnings per share
Net income attributable to Universal Corporation	$ 119,598	$ 124,052	$ 86,577
Denominator for basic earnings per share
Weighted average shares outstanding	24,851,858	24,773,710	24,764,177
Basic earnings per share	$ 4.81	$ 5.01	$ 3.50
Numerator for diluted earnings per share
Net income attributable to Universal Corporation	$ 119,598	$ 124,052	$ 86,577
Denominator for diluted earnings per share:
Weighted average shares outstanding	24,851,858	24,773,710	24,764,177
Effect of dilutive securities (if conversion or exercise assumed) Employee share-based awards	189,056	170,131	158,719
Denominator for diluted earnings per share	25,040,914	24,943,841	24,922,896
Diluted earnings per share	$ 4.78	$ 4.97	$ 3.47