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Acquired In-Process Research and Development and Other Arrangements - Collaborative Arrangement Costs (Details) - Collaborative Arrangement, Transaction with Party to Collaborative Arrangement - CRISPR Therapeutics - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Collaborative arrangement costs $ 98.2 $ 58.7 $ 259.8 $ 147.4
Total collaborative arrangement costs included in costs and expenses        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Collaborative arrangement costs $ 59.0 $ 35.2 $ 155.9 $ 79.6