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Description of Business - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Mar. 09, 2021
Dec. 31, 2021
Dec. 31, 2023
Dec. 31, 2022
Organization Consolidation And Presentation Of Financial Statements [Line Items]        
Common stock, par value (in dollars per share) $ 0.0001   $ 0.0001 $ 0.0001
Selling General and Administrative Expense        
Organization Consolidation And Presentation Of Financial Statements [Line Items]        
Merger-related costs   $ 13.0    
Executive Chairman and Global Chief Scientific and Medical Officer        
Organization Consolidation And Presentation Of Financial Statements [Line Items]        
Ownership percentage of outstanding shares of company 81.80%      
NantKwest        
Organization Consolidation And Presentation Of Financial Statements [Line Items]        
Ownership percentage held by stockholders upon consummation of merger 28.50%      
NantCell        
Organization Consolidation And Presentation Of Financial Statements [Line Items]        
Common stock, par value (in dollars per share) $ 0.001      
Ownership percentage held by stockholders upon consummation of merger 71.50%