Related Party Transactions - Related Party Accounts Payable (Details) - Related Party - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Related Party Transaction [Line Items]
Total related party accounts payable	$ 10.6	$ 16.6
Paragon Agreement
Related Party Transaction [Line Items]
Total related party accounts payable	1.2	16.6
Parapyre warrants liability
Related Party Transaction [Line Items]
Total related party accounts payable	6.9	0.0
License Agreements development milestone liability (see Note 7)
Related Party Transaction [Line Items]
Total related party accounts payable	$ 2.5	$ 0.0