Document and Entity Information - shares
6 Months Ended
Sep. 30, 2019
Nov. 06, 2019
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2019  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q2  
Trading Symbol UROV  
Entity Registrant Name Urovant Sciences Ltd.  
Entity Central Index Key 0001740547  
Current Fiscal Year End Date --03-31  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Current Reporting Status Yes  
Entity Emerging Growth Company true  
Entity Ex Transition Period true  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   30,381,433
Entity File Number 001-38667  
Entity Tax Identification Number 98-1463899  
Entity Address, Address Line One Suite 1, 3rd Floor  
Entity Address, Address Line Two 11-12 St. James’s Square  
Entity Address, City or Town London  
Entity Address, Postal Zip Code SW1Y 4LB  
Entity Address, Country GB  
City Area Code +44 (0)207  
Local Phone Number 400-3347  
Document Quarterly Report true  
Document Transition Report false  
Entity Incorporation, State or Country Code D0  
Title of 12(b) Security Common Shares, $0.000037453 par value  
Security Exchange Name NASDAQ  
Entity Interactive Data Current Yes