v3.26.1
Stock-Based Compensation - Schedule of Stock Option Activity (Details)
$ / shares in Units, $ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Number of Options    
Beginning balance (in shares) | shares 28,559,349  
Replacement awards assumed in connection with the Anywhere Merger (in shares) | shares 1,875,225  
Exercised (in shares) | shares (3,477,561)  
Forfeited (in shares) | shares (1,912,108)  
Ending balance (in shares) | shares 25,044,905 28,559,349
Exercisable and vested at end of period (in shares) | shares 24,898,574  
Weighted Average Exercise Price    
Beginning balance (in dollars per share) $ 6.31  
Replacement awards assumed in connection with the Anywhere Merger (in dollars per share) 14.84  
Exercised (in dollars per share) 4.82  
Forfeited (in dollars per share) 13.99  
Ending balance (in dollars per share) 6.57 $ 6.31
Exercisable and vested at end of period (in dollars per share) $ 6.57  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]    
Balance, weighted-average remaining contractual life (in years) 3 years 3 months 18 days 3 years 7 months 6 days
Exercisable and vested at end of period, weighted-average remaining contractual life (in years) 3 years 3 months 18 days  
Balance, aggregate intrinsic value | $ $ 150 $ 130
Exercisable and vested at end of period, aggregate intrinsic value | $ $ 149  
Closing stock price (in dollars per share) $ 12.33 $ 10.57