v3.26.1
Redeemable Convertible Preferred Stock, Redeemable Common Stock, and Stockholders’ Equity (Deficit) - Redeemable Convertible Preferred Stock and Redeemable Common Stock (Details)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2025
USD ($)
shares
Jun. 30, 2026
USD ($)
$ / shares
Jun. 30, 2025
USD ($)
shares
Mar. 31, 2025
USD ($)
shares
Jun. 30, 2026
USD ($)
$ / shares
Jun. 30, 2025
USD ($)
shares
Sep. 30, 2025
d
$ / shares
Dec. 31, 2024
shares
Class of Stock [Line Items]                
Conversion of redeemable convertible preferred stock in connection with initial public offering | $   $ 195   $ 559        
Temporary equity, shares outstanding (in shares) 0     0        
Temporary equity, shares issued (in shares) 0     0        
Temporary equity, volume-weighted average price days | d             20  
Temporary equity, consecutive trading days | d             30  
Volume- weighted average price, per share (usd per share) | $ / shares             $ 68.16  
IPO                
Class of Stock [Line Items]                
Conversion of redeemable convertible preferred stock in connection with initial public offering | $ $ 559              
Common Class A | IPO                
Class of Stock [Line Items]                
Conversion of stock, shares issued (in shares) 155,000,000              
Series C Preferred Stock                
Class of Stock [Line Items]                
Issuance price (usd per share) | $ / shares   $ 38.95     $ 38.95      
Aggregate price | $   $ 1,200     $ 1,200      
Dividend rate (in percentage)         10.00%      
Series C Preferred Stock | IPO                
Class of Stock [Line Items]                
Temporary equity, shares outstanding (in shares) 30,000,000     30,000,000        
Redeemable Class A Common Stock                
Class of Stock [Line Items]                
Temporary equity, shares outstanding (in shares) 30,000,000   30,000,000 30,000,000   30,000,000   0
Cash dividends paid | $   $ 0 $ 0   $ 0 $ 29    
Redeemable Class A Common Stock | IPO                
Class of Stock [Line Items]                
Conversion of stock, shares issued (in shares) 30,000,000