Subsequent Events	6 Months Ended
	Sep. 30, 2022
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsOn October 23, 2022, Myovant, Sumitovant, Merger Sub, and, solely with respect to Article IX and Annex A of the Merger Agreement, Sumitomo Pharma, entered into the Merger Agreement (see Note 5(A)). In addition, on October 23, 2022, Myovant and Sumitovant entered into a Voting and Support Agreement (see Note 5(B)).