v3.25.2
Cover - shares
3 Months Ended
Jun. 30, 2025
Aug. 06, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag false  
Document Period End Date Jun. 30, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Entity Information [Line Items]    
Entity Registrant Name ROIVANT SCIENCES LTD.  
Entity Central Index Key 0001635088  
Entity File Number 001-40782  
Entity Tax Identification Number 98-1173944  
Entity Incorporation, State or Country Code D0  
Current Fiscal Year End Date --03-31  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Contact Personnel [Line Items]    
Entity Address, Address Line One 7th Floor  
Entity Address, Address Line Two 50 Broadway  
Entity Address, City or Town London  
Entity Address, Country GB  
Entity Address, Postal Zip Code SW1H 0DB  
Entity Phone Fax Numbers [Line Items]    
City Area Code 207  
Local Phone Number 400 3347  
Entity Listings [Line Items]    
Title of 12(b) Security Common Shares, $0.0000000341740141 per share  
Trading Symbol ROIV  
Security Exchange Name NASDAQ  
Entity Common Stock, Shares Outstanding   682,881,743