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Business Description (Details)
Dec. 31, 2022
employees
Dec. 31, 2022
franchisedandcompanyownedoffices
Dec. 31, 2022
Countries
Dec. 31, 2022
Brokerage_Offices
Dec. 31, 2021
franchisedandcompanyownedoffices
Dec. 31, 2020
franchisedandcompanyownedoffices
Dec. 31, 2019
franchisedandcompanyownedoffices
Number of Countries in which Entity Operates | Countries     119        
Owned Brokerage Group              
Number of Independent Sales Associates 59,800            
Number of offices   679   680 675 673 713
Worldwide | Franchise and Owned Brokerage Groups              
Number of Independent Sales Associates 337,400            
Number of offices | franchisedandcompanyownedoffices   20,500          
United States | Franchise and Owned Brokerage Groups              
Number of Independent Sales Associates 195,000            
Number of offices | Brokerage_Offices       5,700