Document And Entity Information - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2016
May. 20, 2016
Sep. 30, 2015
Document And Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Mar. 31, 2016    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY    
Entity Registrant Name UNIVERSAL CORP /VA/    
Entity Central Index Key 0000102037    
Current Fiscal Year End Date --03-31    
Entity Filer Category Large Accelerated Filer    
Entity Common Stock, Shares Outstanding   22,717,735  
Entity Well-known Seasoned Issuer Yes    
Entity Public Float     $ 1,107
Entity Current Reporting Status Yes    
Entity Voluntary Filers No