v3.25.2
Stockholders' Equity (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Class of Stock [Line Items]    
Sale of stock, number of shares issued in transaction (in shares) 13.6  
Sale of stock, price per share (in dollars per share) $ 11.00  
Sale of stock, consideration received on transaction $ 150  
Common stock share value 142 $ 228
Third Stock Purchase Agreement Amendment    
Class of Stock [Line Items]    
Contract with customer, asset, before allowance for credit loss   228
Capitalized contract cost, gross   $ 5
Gilead    
Class of Stock [Line Items]    
Sale of stock, consideration received on transaction $ 15  
Gilead | Third Stock Purchase Agreement Amendment    
Class of Stock [Line Items]    
Common stock shares issued (in shares)   15.2
Shares issued, price per share (in dollars per share)   $ 21.00
Common stock share value   $ 320
Premiums earned, net   $ 87
Gilead    
Class of Stock [Line Items]    
Sale of stock, number of shares acquired in transaction (in shares) 1.4