v3.5.0.2
Document and Entity Information - shares
6 Months Ended
Sep. 30, 2016
Dec. 08, 2016
Document and Entity Information    
Entity Registrant Name Myovant Sciences Ltd.  
Entity Central Index Key 0001679082  
Document Type 10-Q  
Document Period End Date Sep. 30, 2016  
Amendment Flag false  
Current Fiscal Year End Date --03-31  
Entity Current Reporting Status No  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   60,249,139
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q2