License and Collaboration Agreements - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Oct. 31, 2021
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Share issue price	$ 4.00
Beam Therapeutics Inc. (Beam) | Research and Development Expense
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Upfront payment to collaborators				$ 50,000,000.0
Beam Therapeutics Inc. (Beam) | Maximum [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Developmental and commercial milestone payments and royalties on licensed products payable					$ 65,000,000.0
Harvard College
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Share issue price	$ 4.00
Maximum period expected to achieve for success payments	12 years
Estimated fair value of success payment liability				14,200,000
Harvard College | Short-term Liabilities
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Estimated fair value of success payment liability				5,000,000.0
Harvard College | Long-term Liabilities
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Estimated fair value of success payment liability		$ 6,100,000		$ 9,200,000
Harvard College | Research and Development Expense
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Expense in connection with change in estimated fair value of success payment liabilities		$ 8,100,000	$ (23,900,000)
Harvard College | Maximum [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Potential success payment	$ 175,000,000.0