Acquisitions - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended
	Feb. 28, 2019	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Business Acquisition [Line Items]
Goodwill		$ 140,627,000		$ 140,627,000		$ 140,627,000
Estimated fair value of contingent consideration, long-term liabilities		111,621,000		111,621,000		109,606,000
Change in the estimated fair value of contingent consideration				2,015,000	$ 11,355,000
Cobalt Biomedicine, Inc | Acquisition Agreement
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired	100.00%
Business acquisition, impairment of intangible assets or goodwill	$ 0
Goodwill	140,600,000
Maximum contingent consideration upon achievement of certain pre-specified development milestones	$ 500,000,000.0
Maximum term for success payment	20 years
Cobalt Biomedicine, Inc | Acquisition Agreement | Research and Development Expense
Business Acquisition [Line Items]
Estimated fair value of contingent consideration		111,600,000		111,600,000		109,600,000
Change in estimated fair value of success payment		(20,700,000)	$ 18,500,000	7,200,000	13,700,000
Change in the estimated fair value of contingent consideration		(3,400,000)	$ 5,900,000	2,000,000	$ 11,400,000
Cobalt Biomedicine, Inc | Acquisition Agreement | Long-term Liabilities | Research and Development Expense
Business Acquisition [Line Items]
Estimated fair value of success payment liability		$ 18,400,000		$ 18,400,000		$ 11,200,000
Cobalt Biomedicine, Inc | Acquisition Agreement | Minimum
Business Acquisition [Line Items]
Threshold market capitalization	$ 8,100,000,000
Cobalt Biomedicine, Inc | Acquisition Agreement | Market Capitalization Equal to or Exceeds $8.1 billion
Business Acquisition [Line Items]
Cobalt success payment	500,000,000.0
Cobalt Biomedicine, Inc | Acquisition Agreement | IPR&D
Business Acquisition [Line Items]
Business combination, intangible assets	$ 59,200,000