v3.26.1
ACQUISITIONS - Narrative (Details)
$ / shares in Units, $ / shares in Units, shares in Millions, $ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Aug. 27, 2025
USD ($)
Feb. 28, 2025
USD ($)
$ / shares
shares
Aug. 31, 2025
USD ($)
Aug. 31, 2025
AUD ($)
$ / shares
Mar. 31, 2025
USD ($)
Feb. 28, 2025
USD ($)
$ / shares
Feb. 28, 2025
AUD ($)
Mar. 31, 2026
USD ($)
shares
Sep. 30, 2025
$ / shares
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Feb. 28, 2025
$ / shares
Business Combination [Line Items]                        
Purchase price           $ 285,000,000   $ 0        
Goodwill               4,975,000,000     $ 4,944,000,000  
Revenue                   $ 820,000,000    
Net loss                   (64,000,000)    
Domain | S 2025 Q3 Dividends                        
Business Combination [Line Items]                        
Dividends declared (in dollars per share) | $ / shares                 $ 0.088      
Dividends paid (in AUD per share) | $ / shares                 $ 0.088      
Domain                        
Business Combination [Line Items]                        
Acquired interests, percentage   17.00%       17.00%            
Price per share (in AUD per share) | $ / shares       $ 4.43               $ 4.20
Purchase price           $ 285,000,000 $ 452          
Business combination, consideration transferred $ 1,612,000,000   $ 1,600,000,000 $ 2,500                
Issued capital       83.00%                
Fair value of previously held equity interests 300,000,000   $ 300,000,000 $ 465                
Transaction cost, expense                     $ 20,000,000  
Goodwill $ 1,244,000,000                      
Domain | Residential Real Estate Segment                        
Business Combination [Line Items]                        
Goodwill acquired               994,000,000        
Domain | Commercial Real Estate Segment                        
Business Combination [Line Items]                        
Goodwill acquired               250,000,000        
Matterport                        
Business Combination [Line Items]                        
Price per share (in AUD per share) | $ / shares   $ 2.75       $ 2.75            
Business combination, consideration transferred               $ 1,927,000,000        
Exchange ratio of common stock   0.03552                    
Equity interest issued for acquisition (in shares) | shares               11.7        
Fair value of rollover awards   $ 273,000,000           $ 144,000,000        
Goodwill   1,105,000,000       $ 1,105,000,000            
Goodwill, expected tax deductible amount   $ 0       $ 0            
Transaction costs         $ 18,000,000         $ 18,000,000    
Revenue         16,000,000              
Net loss         $ 13,000,000              
Matterport | Restricted Stock Units (RSUs)                        
Business Combination [Line Items]                        
Equity interest issued for acquisition (in shares) | shares   2.3                    
Matterport | Stock Options                        
Business Combination [Line Items]                        
Equity interest issued for acquisition (in shares) | shares   1.8