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Commitments and Contingencies (Details)
$ in Millions
3 Months Ended
Apr. 25, 2024
USD ($)
Mar. 15, 2024
USD ($)
Feb. 01, 2024
USD ($)
Jan. 18, 2024
defendant
Oct. 31, 2023
USD ($)
defendant
Sep. 15, 2023
USD ($)
installment
D
Sep. 05, 2023
USD ($)
Dec. 31, 2023
USD ($)
Sep. 30, 2023
USD ($)
Apr. 22, 2023
class
item
HomeServices of America, Inc. [Member] | Subsequent Event                    
Commitments and Contingencies                    
Total settlement amount $ 250.0                  
Moehrl Related Antitrust Litigations                    
Commitments and Contingencies                    
Number of classes of home sellers | class                   2
Number of covered multiple listing service | item                   20
Moehrl Related Antitrust Litigations | Pending Litigation | MLS Property Information Network, Inc [Member]                    
Commitments and Contingencies                    
Settlement amount             $ 3.0      
Moehrl Related Antitrust Litigations | Settled Litigation | National Association of Realtors, HomeServices of America, Inc., Keller Williams Realty, Inc [Member]                    
Commitments and Contingencies                    
Conspiracy existed and awarded         $ 1,800.0          
Number of Defendants | defendant         3          
Moehrl Related Antitrust Litigations | Settled Litigation | Keller Williams Realty, Inc [Member]                    
Commitments and Contingencies                    
Total settlement amount     $ 70.0              
Moehrl Related Antitrust Litigations | Settled Litigation | National Association Of Realtors [Member]                    
Commitments and Contingencies                    
Total settlement amount   $ 418.0                
Nationwide Claims | Settled Litigation                    
Commitments and Contingencies                    
Settlement amount           $ 55.0        
Number of installments | installment           3        
The percentage of amount deposited in the settlement fund               25.00% 25.00%  
The amount deposited in the settlement fund               $ 13.8 $ 13.8  
Nationwide Claims | Settled Litigation | Scenario, Plan [Member]                    
Commitments and Contingencies                    
The percentage of amount deposited in the settlement fund           50.00%        
Number of business days of final court approval of settlement | D           10        
Toronto Regional Real Estate Board [Member] | Pending Litigation                    
Commitments and Contingencies                    
Number of Defendants | defendant       70