v3.26.1
Stock-Based Compensation - Additional Information (Details) - USD ($)
shares in Millions, $ in Millions
6 Months Ended
Jan. 09, 2026
Jun. 30, 2026
Jun. 30, 2025
Jan. 01, 2026
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Intrinsic value of options exercised   $ 22 $ 11  
Unrecognized stock-based compensation expense   $ 298    
Unrecognized stock-based compensation expense, weighted-average period of recognition (in years)   3 years 1 month 6 days    
2021 Equity Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of additional shares available for grant (in shares)       28.2
Number of shares available for grant (in shares)   76.8    
Anywhere Plan | Common Class A        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares issued in period (in shares) 14.2      
Number of shares available for grant (in shares) 9.8 1.3    
2021 Employee Stock Purchase Plan | Employee Stock Purchase Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of additional shares available for grant (in shares)       5.5
2021 Employee Stock Purchase Plan | Common Class A | Employee Stock Purchase Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares issued in period (in shares)   0.2    
Number of shares available for grant (in shares)   22.8