v3.26.1
License and Research Agreements - Kyowa Kirin Co., Ltd. - Additional Information (Details) - License Agreement - USD ($)
$ in Millions
1 Months Ended 6 Months Ended
Jul. 01, 2022
Nov. 30, 2025
Jun. 30, 2026
Dec. 31, 2025
Royalty Revenue in European Territory        
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]        
Percentage of royalty on net sales receives     10.00%  
Kyowa Kirin Collaboration        
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]        
Profit loss sharing percentage on net sales     30.00%  
Kyowa Kirin Collaboration | Other Current Assets        
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]        
License agreement other receivables     $ 1 $ 1
Kyowa Kirin Collaboration | Commercial and Development Activity Reimbursements        
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]        
License agreement accrued liabilities     16 12
Kyowa Kirin Collaboration | Royalty        
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]        
License agreement accounts receivable     $ 94 $ 98
Kyowa Kirin Collaboration | Profit Share Territory        
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]        
Percentage of right to receive royalty payments on net sales 30.00% 25.00%    
Kyowa Kirin Collaboration | Royalty Revenue in North American Territory | Maximum        
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]        
Percentage of royalty on net sales receives     30.00%  
Kyowa Kirin Collaboration | Royalty Revenue in North American Territory | Minimum        
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]        
Percentage of royalty on net sales receives     20.00%