Collaboration, License and Other Arrangements - Schedule of Credits Recognized in Condensed Consolidated Statements of Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Cost of sales	$ 407.5	$ 371.9	$ 770.5	$ 714.5
Research and development expenses	978.4	966.6	1,958.1	1,755.7
Acquired in-process research and development expenses	2.2	4,449.1	22.0	4,525.9
CRISPR JDCA
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Cost of sales	30.1	15.9	66.3	31.7
Research and development expenses	15.1	11.6	31.1	23.3
Acquired in-process research and development expenses	$ 0.0	$ 0.0	$ 12.5	$ 0.0