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Collaboration and License Agreements - Additional Information (Details)
1 Months Ended 12 Months Ended
Nov. 30, 2023
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Oct. 31, 2023
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Oct. 31, 2022
Sep. 30, 2022
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Jun. 30, 2022
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Jan. 31, 2022
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Dec. 31, 2021
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Oct. 31, 2021
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Jul. 31, 2021
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Jun. 30, 2021
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Oct. 31, 2020
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Sep. 30, 2019
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Apr. 30, 2019
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Dec. 31, 2023
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Dec. 31, 2022
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Dec. 31, 2021
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Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Current portion of deferred revenue                           $ 68,706,000 $ 135,974,000  
Long-term portion of deferred revenue                           109,888,000 202,179,000  
Deferred revenue liability             $ 348,573,000             178,594,000 338,153,000 $ 348,573,000
Research and development expense                           437,381,000 311,594,000 387,087,000
Gain (loss) from equity method investment                             (25,500,000)  
License revenue                           377,709,000 60,920,000 51,844,000
Carrying value of equity method investment                           $ 0 0  
Verve Therapeutics, Inc. | Common Stock                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Equity shares held | shares                           546,970    
Lilly Agreement                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Proceeds from potential future development-stage upfront payments   $ 200,000,000                            
Sale and issuance of common stock | shares   2,004,811                            
Aggregated purchase price   $ 50,000,000                            
Stock purchase agreement amount received   50,000,000                            
Fair value of common stock sold   16,400,000                            
Collaboration agreement upfront payment received $ 200,000,000                              
Collaboration agreement performance obligation revenue recognized                           $ 216,400,000    
License agreement upfront payment received   200,000,000                            
Collaboration agreement aggregate transaction price   $ 216,400,000                            
Collaboration agreement term of contract   6 years                            
Deferred revenue liability                           0    
Collaboration license agreement fair value of shares issued   $ 33,600,000                            
Lilly Agreement | Maximum                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Additional proceeds from potential future development-stage payments   350,000,000                            
Pfizer                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Agreement description             In December 2021, the Company entered into a research collaboration agreement, or the Pfizer Agreement, with Pfizer Inc., or Pfizer, focused on the use of certain of the Company’s base editing technology to develop in vivo therapies for rare genetic diseases of the liver, muscle, and central nervous system. Under the terms of the Pfizer Agreement, the Company will conduct all research activities through development candidate selection for three base editing programs that target specific genes corresponding to specific diseases that are the subject of such programs. Pfizer will have exclusive rights to license each of the three programs at no additional cost, each an Opt-In Right, and will assume responsibility for subsequent development and commercialization. At the end of the Phase 1/2 clinical trials, the Company may elect to enter into a global co-development and co-commercialization agreement with Pfizer with respect to one program licensed under the collaboration for an option exercise fee equal to a percentage of the applicable development costs incurred by Pfizer, or the Participation Election. In the event the Company elects to exercise its Participation Election, upon the payment of its option exercise fee, Pfizer and the Company would share net profits as well as development and commercialization costs in a 65%/35% (Pfizer/Company) split for such program. The research collaboration is managed on an overall basis by a Joint Research Committee, or JRC, formed by an equal number of representatives from the Company and Pfizer.                  
Collaboration arrangement, initial term             4 years                  
Collaboration arrangement extension term description             extended for an additional year on a program-by-program basis                  
Potential total consideration             $ 1,350,000,000                 1,350,000,000
Nonrefundable upfront payment receivable             300,000,000                 300,000,000
Collaboration agreement upfront payment received           $ 300,000,000                    
Collaboration agreement performance obligation revenue recognized                           134,300,000 48,200,000 0
Collaboration agreement aggregate transaction price             $ 300,000,000                 300,000,000
Current portion of deferred revenue                           42,900,000    
Long-term portion of deferred revenue                           74,600,000    
Earn-out payment period             10 years                  
Deferred revenue liability             $ 300,000,000                 $ 300,000,000
Pfizer | Assigned to Company | Upon Participation Election                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Net profits as well as development and commercialization costs percentage             35.00%                 35.00%
Pfizer | Assigned to Pfizer | Upon Participation Election                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Net profits as well as development and commercialization costs percentage             65.00%                 65.00%
Pfizer | Maximum | Per Program                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Development regulatory and commercial milestones receivable             $ 350,000,000                 $ 350,000,000
Sana Biotechnology                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Collaboration agreement performance obligation revenue recognized                           1,800,000   50,000,000
License agreement upfront payment received               $ 50,000,000                
Collaboration agreement aggregate transaction price               50,000,000                
Additional fee per additional option right               10,000,000                
Option rights aggregate potential additional consideration               20,000,000                
Sana Biotechnology | Maximum                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Development regulatory and commercial milestones receivable               $ 65,000,000                
Sana Biotechnology | License Agreement Terms                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Agreement description               For up to thirty months following the effective date of the Sana Agreement, Sana has the option to select up to a cumulative total of two additional CAR antigen targets or PSC product types for an additional fee of $10.0 million per additional CAR antigen target and additional PSC product type, or the Option Rights, for an aggregate potential additional consideration of $20.0 million. Further, for up to thirty months following the effective date of the Sana Agreement, Sana has a one-time right to substitute, in the aggregate, either one CAR antigen target or one PSC product type at no additional cost, or the Replacement Right. Sana may also select a specified number of additional or replacement genetic targets for each PSC product type at any time prior to the third anniversary of the effective date at no additional cost, or the Genetic Target Nomination Rights. Sana may terminate the Sana Agreement for convenience prior to the first commercial sale of any licensed product by providing 90 days’ prior written notice or upon 180 days’ prior written notice after first commercial sale.                
Apellis Pharmaceuticals, Inc                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Agreement description                   In June 2021, the Company entered into a research collaboration agreement, or the Apellis Agreement, with Apellis Pharmaceuticals, Inc., or Apellis, focused on the use of certain of the Company’s base editing technology to discover new treatments for complement system-driven diseases. Under the terms of the Apellis Agreement, the Company will conduct preclinical research on up to six base editing programs that target specific genes within the complement system in various organs, including the eye, liver, and brain. Apellis has an exclusive option to license any or all of the six programs, or in each case, an Opt-In Right, and will assume responsibility for subsequent development. The Company may elect to enter into a 50-50 U.S. co-development and co-commercialization agreement with Apellis with respect to one program instead of a license. The collaboration is managed on an overall basis by an alliance steering committee formed by an equal number of representatives from the Company and Apellis.            
Collaboration arrangement, initial term                   5 years            
Upfront revenue recognized                   $ 0            
Collaboration agreement performance obligation revenue recognized                           16,400,000 10,600,000 1,800,000
Collaboration agreement aggregate transaction price                   75,000,000            
Upfront fee receivable upon signing contract                   50,000,000            
Collaboration agreement first anniversary amount receivable         $ 25,000,000         $ 25,000,000            
Upfront payment received under term of agreement                 $ 50,000,000              
Collaboration agreement first anniversary payment received         $ 25,000,000                      
Current portion of deferred revenue                           17,300,000    
Long-term portion of deferred revenue                           $ 28,900,000    
Apellis Pharmaceuticals, Inc | Maximum                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Collaboration arrangement extension term                   2 years            
Prime Medicine Inc                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Collaborative arrangement rights and obligations, description                       The Company had an obligation to issue $5.0 million in shares of its common stock to Prime Medicine, and Prime Medicine had an obligation to issue 5,000,000 shares of its common stock to the Company, should the Company elect to extend the collaboration beyond one year        
Obligation to issue common stock value                       $ 5,000,000        
Obligation to issue common stock shares | shares                       5,000,000        
Reverse stock split ratio     3.1088                          
Reverse stock split     one-for-3.1088                          
Equity shares held | shares                           1,608,337    
Prime Medicine Inc | Common Stock                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Shares issued and sold | shares                     200,307          
Number of common stock received | shares                     5,000,000          
Equity shares held | shares                           1,608,337    
Equity shares value held                           $ 14,200,000    
Verve                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Remaining unrecognized revenue recognized   $ 300,000                            
Deferred revenue liability                           0    
Upfront payment fair value shares received                         $ 500,000      
License revenue                           400,000 24,000 $ 24,000
Reverse stock split ratio                   9.2592            
Reverse stock split                   one-for-9.2592            
Equity shares value held                           7,600,000    
Verve | Common Stock                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Collaboration license agreement fair value of shares received                         $ 500,000      
Number of common stock received | shares                         2,600,000      
Orbital                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Common stock shares received at closing | shares       75,000,000                        
Agreement description       Under the terms of the Orbital Agreement, the Company will collaborate with Orbital to advance nonviral delivery and ribonucleic acid, or RNA, technology by providing Orbital with certain proprietary materials, a non-exclusive research license to certain RNA technology and nonviral delivery technology controlled by the Company, and by performing research and development support services as outlined in a research plan. The Company also granted Orbital an exploitation license to certain RNA technology and nonviral delivery technology controlled by the Company. The exploitation license is exclusive in the fields of vaccines and certain protein therapeutics and nonexclusive in all other fields other than gene editing and conditioning. The collaboration is managed on an overall basis by a Joint Steering Committee, or JSC, comprised of an equal number of representatives from the Company and Orbital.                        
Collaboration agreement performance obligation revenue period for recognition       3 years                        
Collaboration agreement aggregate transaction price       $ 25,500,000                        
Collaboration agreement performance obligation revenue recognized                           8,500,000 2,100,000  
Collaboration agreement aggregate transaction price       25,500,000                        
Current portion of deferred revenue                           8,500,000    
Long-term portion of deferred revenue                           6,400,000    
Gain (loss) from equity method investment                           $ 0 $ (25,500,000)  
Carrying value of equity method investment       $ 0                        
Orbital | Research Plan                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Collaboration arrangement, initial term       3 years                        
Orbital | Exploitation Licenses                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Collaboration arrangement, initial term       3 years                        
Collaboration arrangement extension term description       which may be extended for up to two successive one-year periods                        
Orbital | Option Pricing Model | Level 3 | Volatility of Market Participants                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Alternate investment, measurement input       0.68                        
Orbital | Option Pricing Model | Level 3 | Discount for Lack of Marketability                                
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]                                
Alternate investment, measurement input       0.43