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Research Collaboration and License Agreements (Tables)
 3 Months Ended
Mar. 31, 2023
Research Collaboration And License Agreements [Abstract]  
Summary of Contract Balances
Changes in the Company's contract balances for the three months ended March 31, 2023 and 2022 were as follows:
(dollars in millions)March 31,
2023		March 31,
2022
Accounts receivable related to collaborations
Beginning balance$1.0 $15.0 
Additions1.5 — 
Payments received(2.5)(15.0)
Ending balance$— $— 
Accounts payable related to collaborations
Beginning balance$5.0 $— 
Additions1.7 — 
Payments made(5.0)— 
Ending balance$1.7 $— 
Contract assets: Collaboration contract asset
Beginning balance$10.7 $12.5 
Additions— — 
Amortization(0.6)(0.4)
Ending balance$10.1 $12.1 
Contract liabilities: Deferred revenue
Beginning balance$623.7 $740.6 
Revenue recognized from balances held at the beginning of the period(31.4)(24.2)
Additions to collaboration agreements1.5 3.0 
Ending balance$593.8 $719.4 
Transaction Price Allocated to Performance Obligations
The aggregate amount of the transaction price allocated to performance obligations that were unsatisfied as of March 31, 2023 was $593.8 million, which is expected to be recognized in the following periods:
(dollars in millions)
Remainder of 2023$163.4 
2024200.9 
202590.2 
202655.3 
202734.7 
202810.8 
Thereafter38.5 
Total$593.8