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Research Collaboration and License Agreements (Tables)
 12 Months Ended
Dec. 31, 2025
Research Collaboration And License Agreements [Abstract]  
Schedule of Contract Balances
Changes in the Company's contract balances were as follows:
December 31,
(dollars in millions)20252024
Accounts receivable
Beginning balance$5.7 $— 
Additions21.1 12.4 
Payments received(25.8)(6.7)
Ending balance$1.0 $5.7 
Accounts payable related to collaborations
Beginning balance$5.3 $13.1 
Additions46.4 48.9 
Payments made(34.9)(56.7)
Ending balance$16.8 $5.3 
Contract assets: Collaboration contract asset
Beginning balance$7.8 $9.4 
Additions— 3.0 
Amortization(4.3)(4.6)
Ending balance$3.5 $7.8 
Contract liabilities: Deferred revenue
Beginning balance$448.2 $549.2 
Additions to collaboration agreements— 130.0 
Revenue recognized from balances held at the beginning of the period(242.6)(101.0)
Revenue recognized from balances not held at the beginning of the period— (130.0)
Ending balance$205.6 $448.2 
Schedule of Transaction Price Allocated to Performance Obligations
The aggregate amount of the transaction price allocated to performance obligations that were unsatisfied as of December 31, 2025 totaled $205.6 million, which is expected to be recognized in the following periods:
(dollars in millions)
2026$71.3 
202720.3 
2028114.0 
Total$205.6