Collaborative Arrangements and Pending Acquisition - Moderna Therapeutics, Inc. (Details) - Moderna Therapeutics, Inc. $ in Millions	1 Months Ended
	Jul. 31, 2016 USD ($)
Schedule of Collaborative Arrangement Agreements [Line Items]
Collaborative arrangement development and regulatory potential milestone payments maximum	$ 275.0
Collaborative Arrangement Approval and Reimbursement Milestones	220.0
Collaborative Arrangement, Investment in Collaborative Partner, Amount	20.0
Collaborative Arrangement Up-front License Fee	$ 20.0