v3.25.0.1
Stockholders' Equity - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Class Of Stock [Line Items]    
Common stock, shares authorized (in shares) 400,000,000.0 400,000,000.0
Issuance of common stock $ 228 $ 25
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Preferred stock, shares authorized (in shares) 10,000,000  
Preferred stock, par value (in dollars per share) $ 0.0001  
Preferred stock, shares outstanding (in shares) 0 0
At-the-Market Facility    
Class Of Stock [Line Items]    
Common stock, par value (in dollars per share)   $ 0.0001
Sale of stock authorized consideration on transaction   $ 200
Sale of stock, number of shares issued in transaction (in shares)   200,000
Sale of stock, consideration received on transaction   $ 5
Third Stock Purchase Agreement Amendment    
Class Of Stock [Line Items]    
Capitalized contract cost, gross $ 5  
Gilead | Second Stock Purchase Agreement    
Class Of Stock [Line Items]    
Issuance of common stock (in shares)   1,000,000
Issuance of common stock   $ 20
Weighted average closing price of our common stock on grant date (in dollars per share)   $ 19.26
Gilead | Third Stock Purchase Agreement Amendment    
Class Of Stock [Line Items]    
Issuance of common stock (in shares) 15,200,000  
Issuance of common stock $ 320  
Weighted average closing price of our common stock on grant date (in dollars per share) $ 21.00  
Premiums earned, net $ 87  
Contract with customer, asset, before allowance for credit loss 228  
Capitalized contract cost, gross $ 5